Turn on git revision

Fixes #1536

.github/workflows/build.yml

@@ -628,7 +628,7 @@ jobs:
 
   upload-ubuntu-ppa:
     name: Upload Ubuntu PPA
-    if: github.repository == 'strawberrymusicplayer/strawberry' && github.event.pull_request.head.repo.fork == false && (github.event_name == 'release' || (github.event_name == 'push' && (github.ref == 'refs/heads/master' || github.ref == 'refs/heads/ci')))
+    if: github.repository == 'strawberrymusicplayer/strawberry' && github.event.pull_request.head.repo.fork == false && (github.event_name == 'release' || (github.event_name == 'push' && (github.ref == 'refs/heads/master' || github.ref == 'refs/heads/ci' || github.ref == 'refs/heads/1.1')))
     runs-on: ubuntu-latest
     strategy:
       fail-fast: false
@@ -730,13 +730,27 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        runner: [ 'macos-12' ]
+        runner: [ 'macos-13', 'macos-14' ]
         buildtype: [ 'release' ]
 
     runs-on: ${{ matrix.runner }}
 
     steps:
 
+      - name: Set MACOSX_DEPLOYMENT_TARGET
+        run: |
+          for i in 12 13 14 15; do
+            if [ -d "/Library/Developer/CommandLineTools/SDKs/MacOSX${i}.sdk" ]; then
+              echo "Using macOS SDK ${i}"
+              echo "MACOSX_DEPLOYMENT_TARGET=${i}.0" >> $GITHUB_ENV
+              break
+            fi
+          done
+
+      - name: Verify MACOSX_DEPLOYMENT_TARGET
+        run: |
+          test "${MACOSX_DEPLOYMENT_TARGET}" = "" && false || echo "MACOSX_DEPLOYMENT_TARGET: ${MACOSX_DEPLOYMENT_TARGET}"
+
       - name: Set arch
         shell: bash
         run: echo "arch=$(uname -m)" >> $GITHUB_ENV
@@ -784,7 +798,6 @@ jobs:
 
       - name: Configure CMake
         env:
-          MACOSX_DEPLOYMENT_TARGET: 12.0
           PKG_CONFIG_PATH: ${{env.prefix_path}}/lib/pkgconfig
           LDFLAGS: -L${{env.prefix_path}}/lib -Wl,-rpath,${{env.prefix_path}}/lib
         run: >
@@ -801,7 +814,7 @@ jobs:
           -DICU_ROOT="${{env.prefix_path}}"
           -DFFTW3_DIR="${{env.prefix_path}}"
           -DAPPLE_DEVELOPER_ID=$(test '${{github.repository}}' = 'strawberrymusicplayer/strawberry' && test '${{github.event.pull_request.base.repo.full_name}}' = '${{github.event.pull_request.head.repo.full_name}}' && echo "383J84DVB6" || echo "")
-          -DENABLE_SPOTIFY=OFF
+          -DENABLE_SPOTIFY=$(test -f "${{env.prefix_path}}/lib/gstreamer-1.0/libgstspotify.dylib" && echo "ON" || echo "OFF")
 
       - name: Build
         run: cmake --build build --config Release --parallel 4
@@ -820,9 +833,14 @@ jobs:
         run: make deploy
 
       - name: Manually Codesign
-        if: github.repository == 'strawberrymusicplayer/strawberry' && github.event.pull_request.head.repo.fork == false
+        if: github.repository == 'strawberrymusicplayer/strawberry' && github.event.pull_request.head.repo.fork == false && matrix.runner == 'macos-13'
         working-directory: build
-        run: codesign -s 383J84DVB6 -f strawberry.app/Contents/Frameworks/{libsoup-3.0.0.dylib,libnghttp2.14.dylib,libpsl.5.dylib,libpcre2-8.0.dylib,libpcre2-16.0.dylib,libpng16.16.dylib,libzstd.1.dylib,libfreetype.6.dylib} strawberry.app/Contents/Frameworks/png.framework/png strawberry.app
+        run: codesign -s 383J84DVB6 -f strawberry.app/Contents/Frameworks/{libpcre2-8.0.dylib,libpcre2-16.0.dylib,libpng16.16.dylib,libfreetype.6.dylib,libzstd.1.dylib,libutf8_validity.dylib} strawberry.app/Contents/Frameworks/png.framework/png strawberry.app
+
+      - name: Manually Codesign
+        if: github.repository == 'strawberrymusicplayer/strawberry' && github.event.pull_request.head.repo.fork == false && matrix.runner == 'macos-14'
+        working-directory: build
+        run: codesign -s 383J84DVB6 -f strawberry.app/Contents/Frameworks/png.framework/png strawberry.app
 
       - name: Deploy check
         working-directory: build
@@ -877,6 +895,20 @@ jobs:
 
     steps:
 
+      - name: Set MACOSX_DEPLOYMENT_TARGET
+        run: |
+          for i in 12 13 14 15; do
+            if [ -d "/Library/Developer/CommandLineTools/SDKs/MacOSX${i}.sdk" ]; then
+              echo "Using macOS SDK ${i}"
+              echo "MACOSX_DEPLOYMENT_TARGET=${i}.0" >> $GITHUB_ENV
+              break
+            fi
+          done
+
+      - name: Verify MACOSX_DEPLOYMENT_TARGET
+        run: |
+          test "${MACOSX_DEPLOYMENT_TARGET}" = "" && false || echo "MACOSX_DEPLOYMENT_TARGET: ${MACOSX_DEPLOYMENT_TARGET}"
+
       - name: Set arch
         shell: bash
         run: echo "arch=$(uname -m)" >> $GITHUB_ENV
@@ -907,7 +939,6 @@ jobs:
 
       - name: Configure CMake
         env:
-          MACOSX_DEPLOYMENT_TARGET: 11.0
           PKG_CONFIG_PATH: ${{env.prefix_path}}/lib/pkgconfig
           LDFLAGS: -L${{env.prefix_path}}/lib -Wl,-rpath,${{env.prefix_path}}/lib
         run: >
@@ -924,7 +955,7 @@ jobs:
           -DICU_ROOT="${{env.prefix_path}}"
           -DFFTW3_DIR="${{env.prefix_path}}"
           -DAPPLE_DEVELOPER_ID="383J84DVB6"
-          -DENABLE_SPOTIFY=OFF
+          -DENABLE_SPOTIFY=$(test -f "${{env.prefix_path}}/lib/gstreamer-1.0/libgstspotify.dylib" && echo "ON" || echo "OFF")
 
       - name: Build
         run: cmake --build build --config Release --parallel 4
@@ -967,11 +998,11 @@ jobs:
             echo "upload_path=${{secrets.DOWNLOADS_PATH}}/development_releases/macos" >> $GITHUB_OUTPUT
           fi
 
-      - name: Create server path
+      #- name: Create server path
-        run: ssh -p ${{secrets.SSH_PORT}} -o StrictHostKeyChecking=no ${{secrets.SSH_USER}}@${{secrets.SSH_HOST}} mkdir -p ${{steps.set-upload-path.outputs.upload_path}}
+        #run: ssh -p ${{secrets.SSH_PORT}} -o StrictHostKeyChecking=no ${{secrets.SSH_USER}}@${{secrets.SSH_HOST}} mkdir -p ${{steps.set-upload-path.outputs.upload_path}}
 
-      - name: rsync
+      #- name: rsync
-        run: rsync -e "ssh -p ${{secrets.SSH_PORT}} -o StrictHostKeyChecking=no" -var build/*.dmg ${{secrets.SSH_USER}}@${{secrets.SSH_HOST}}:${{steps.set-upload-path.outputs.upload_path}}/
+        #run: rsync -e "ssh -p ${{secrets.SSH_PORT}} -o StrictHostKeyChecking=no" -var build/*.dmg ${{secrets.SSH_USER}}@${{secrets.SSH_HOST}}:${{steps.set-upload-path.outputs.upload_path}}/
 
 
   build-windows-mingw:
@@ -1517,7 +1548,7 @@ jobs:
               upload_path="${{secrets.RELEASES_PATH}}/"
             else
               distro=$(echo "$i" | cut -d '/' -f 2)
-              if [ "$(echo "$i" | grep '-' || true)" = "" ]; then
+              if [ -z "$(echo "${distro}" | grep '-' || true)" ]; then
                 upload_path="${{secrets.BUILDS_PATH}}/${distro}/"
               else
                 distro_name=$(echo "${distro}" | cut -d '-' -f 1)

.gitignore

@@ -13,4 +13,6 @@
 /dist/scripts/maketarball.sh
 /dist/unix/strawberry.spec
 /dist/windows/strawberry.nsi
-src/translations/translations.pot
+/debian/control
+/debian/changelog
+/dist/macos/Info.plist

3rdparty/README.md

@@ -2,20 +2,27 @@
 ============================================
 
 KDSingleApplication
------------------
+-------------------
-This is a small static library used by Strawberry to prevent it from starting twice per user session.
+A small library used by Strawberry to prevent it from starting twice per user session.
 If the user tries to start strawberry twice, the main window will maximize instead of starting another instance.
 It is also used to pass command-line options through to the first instance.
+This 3rdparty copy is used only if KDSingleApplication 1.1 or higher is not found on the system.
 
 URL: https://github.com/KDAB/KDSingleApplication/
 
 
 SPMediaKeyTap
 -------------
-Used on macOS to exclusively enable strawberry to grab global media shortcuts.
+A library used on macOS to exclusively grab global media shortcuts.
-Can safely be deleted on other platforms.
 
+The library is no longer maintained by the original author.
+
+The directory can safely be deleted on other platforms.
 
 getopt
 ------
-getopt included only when compiling on Windows.
+getopt included on Windows for command line options parsing with Unicode support .
+
+The directory can safely be deleted on other platforms.
+
+URL: https://github.com/ludvikjerabek/getopt-win

3rdparty/kdsingleapplication/CMakeLists.txt

@@ -1,4 +1,4 @@
-cmake_minimum_required(VERSION 3.7)
+cmake_minimum_required(VERSION 3.13)
 set(SOURCES KDSingleApplication/src/kdsingleapplication.cpp KDSingleApplication/src/kdsingleapplication_localsocket.cpp)
 set(HEADERS KDSingleApplication/src/kdsingleapplication.h KDSingleApplication/src/kdsingleapplication_localsocket_p.h)
 qt_wrap_cpp(MOC ${HEADERS})

CMakeLists.txt

@@ -1,4 +1,4 @@
-cmake_minimum_required(VERSION 3.7)
+cmake_minimum_required(VERSION 3.13)
 
 project(strawberry)
 
@@ -84,6 +84,13 @@ add_compile_options(${COMPILE_OPTIONS})
 
 if(CMAKE_BUILD_TYPE MATCHES "Release")
   add_definitions(-DNDEBUG)
+  set(ENABLE_DEBUG_OUTPUT_DEFAULT OFF)
+else()
+  set(ENABLE_DEBUG_OUTPUT_DEFAULT ON)
+endif()
+
+option(ENABLE_DEBUG_OUTPUT "Enable debug output" ${ENABLE_DEBUG_OUTPUT_DEFAULT})
+if(NOT ENABLE_DEBUG_OUTPUT)
   add_definitions(-DQT_NO_DEBUG_OUTPUT)
 endif()
 
@@ -92,6 +99,8 @@ if(USE_RPATH)
   set(CMAKE_INSTALL_RPATH_USE_LINK_PATH TRUE)
 endif()
 
+set(QT_NO_SHOW_OLD_QT_WRAP_CPP_WARNING ON)
+
 find_program(CCACHE_EXECUTABLE NAMES ccache)
 if(CCACHE_EXECUTABLE)
   message(STATUS "ccache found: will be used for compilation and linkage")
@@ -494,6 +503,8 @@ add_definitions(
   -DQT_NO_FOREACH
   -DQT_ASCII_CAST_WARNINGS
   -DQT_NO_CAST_FROM_ASCII
+  -DQT_NO_KEYWORDS
+  -DQT_NO_SIGNALS_SLOTS_KEYWORDS
 )
 
 if(WIN32)

Changelog

@@ -2,6 +2,45 @@ Strawberry Music Player
 =======================
 ChangeLog
 
+Version 1.1.3 (2024.09.21):
+
+Bugfixes:
+    * Fixed gstreamer registry lookup leak in Spotify settings.
+    * Fixed all songs in a CUE sheet starting playback at the zero position (#1549).
+    * Fixed playback going to pause and back to play on song change.
+    * Fixed Genius Lyrics login not working (#1554).
+    * Fixed slow collection filter search.
+
+Version 1.1.2 (2024.09.12):
+
+  Bugfixes:
+    * Fixed Tidal Open API cover provider to only login when needed instead of on startup.
+    * Fixed KDE added keyboard accelerator characters (ampersands) appearing in sidebar (#1400, #1389, #1476).
+    * Fixed KDE added keyboard accelerator characters (ampersands) appearing when editing playlist name (#1499).
+    * Fixed collection "Search for this" adding prefix without value (#1510).
+    * Fixed play (-p) command line option not working on startup (#1465).
+    * Fixed scan transaction being started when "Update the collection when Strawberry starts" option is unchecked (#1469)
+    * Fixed Spotify bitrate being limited 128kbit/s.
+    * Fixed Spotify returning too many artists and albums.
+    * Fixed manually switching Spotify songs blocking UI.
+    * Fixed analyzer not being set.
+    * Fixed context top text being updated causing selected text to be unselected.
+    * Fixed filter search to use filename for songs with empty title.
+    * Fixed missing developer in Appstream appdata file.
+    * Fixed MPRIS2 DesktopEntry to return desktop file entry without ".desktop" (#1516)
+    * Fixed WavPack .wvc accepted as valid audio files (#1525).
+    * Fixed dynamic playlist controls not following system colors (#1483).
+    * Fixed freeze on playlist right click (#1478).
+    * Fixed copying songs to a iPod device keeping too many files open (#1527).
+    * Fixed MBIDs from MP4 being parsed incorrectly causing ListenBrainz errors (#1531).
+    * Fixed playlist sorting after filename (#1538).
+
+  Enhancements:
+    * Improved volume adjustment and track seeking using touchpad (#1498).
+    * Use own thread for lyrics parsing.
+    * Added url and filename columns to collection and playlist filter search.
+    * (macOS) Added Spotify.
+
 Version 1.1.1 (2024.07.22):
 
   Bugfixes:

README.md

@@ -14,11 +14,11 @@ Resources:
   * Wiki: https://wiki.strawberrymusicplayer.org/
   * Forum: https://forum.strawberrymusicplayer.org/
   * Github: https://github.com/strawberrymusicplayer/strawberry
-  * Buildbot: https://buildbot.strawberrymusicplayer.org/
   * Latest builds: https://builds.strawberrymusicplayer.org/
   * openSUSE buildservice: https://build.opensuse.org/package/show/home:jonaski:audio/strawberry
   * Ubuntu PPA: https://launchpad.net/~jonaski/+archive/ubuntu/strawberry
   * Ubuntu Unstable PPA: https://launchpad.net/~jonaski/+archive/ubuntu/strawberry-unstable
+  * Translations: https://crowdin.com/project/strawberrymusicplayer/
 
 ### :bangbang: Opening an issue
 
@@ -119,4 +119,4 @@ To compile on Windows with Visual Studio 2019 or 2022, see https://github.com/st
 
 ### :penguin: Packaging status
 
-[![Packaging status](https://repology.org/badge/vertical-allrepos/strawberry.svg?exclude_unsupported=1)](https://repology.org/metapackage/strawberry/versions)
+[![Packaging status](https://repology.org/badge/vertical-allrepos/strawberry.svg?columns=3&header=Strawberry&exclude_unsupported=1)](https://repology.org/metapackage/strawberry/versions)

cmake/Translations.cmake

@@ -44,7 +44,7 @@ macro(add_pot outfiles header pot)
   add_custom_command(
     OUTPUT ${pot}
     WORKING_DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR}
-    COMMAND ${GETTEXT_XGETTEXT_EXECUTABLE} ${XGETTEXT_OPTIONS} -s -C --omit-header --output="${CMAKE_CURRENT_BINARY_DIR}/pot.temp" ${add_pot_sources}
+    COMMAND ${GETTEXT_XGETTEXT_EXECUTABLE} ${XGETTEXT_OPTIONS} -C --omit-header --no-location --output="${CMAKE_CURRENT_BINARY_DIR}/pot.temp" ${add_pot_sources}
     COMMAND cat ${header} ${CMAKE_CURRENT_BINARY_DIR}/pot.temp > ${pot}
     DEPENDS ${add_pot_sources} ${header}
   )

cmake/Version.cmake

@@ -1,9 +1,9 @@
 set(STRAWBERRY_VERSION_MAJOR 1)
 set(STRAWBERRY_VERSION_MINOR 1)
-set(STRAWBERRY_VERSION_PATCH 1)
+set(STRAWBERRY_VERSION_PATCH 3)
 #set(STRAWBERRY_VERSION_PRERELEASE rc1)
 
-set(INCLUDE_GIT_REVISION OFF)
+set(INCLUDE_GIT_REVISION ON)
 
 set(majorminorpatch "${STRAWBERRY_VERSION_MAJOR}.${STRAWBERRY_VERSION_MINOR}.${STRAWBERRY_VERSION_PATCH}")
 

crowdin.yml

@@ -0,0 +1,3 @@
+files:
+  - source: /src/translations/translations.pot
+    translation: /src/translations/%locale_with_underscore%.po

data/data.qrc

@@ -45,5 +45,6 @@
         <file>mood/sample.mood</file>
         <file>text/ghosts.txt</file>
         <file>pictures/sidebar-background.png</file>
+        <file>style/dynamicplaylistcontrols.css</file>
     </qresource>
 </RCC>

data/style/dynamicplaylistcontrols.css

@@ -0,0 +1,13 @@
+#container {
+  background: %background;
+  border-radius: 10px;
+  border: 1px solid rgba(200, 200, 200, 75%);
+}
+
+#label1 {
+  font-weight: bold;
+}
+
+#label2 {
+  font-size: 7.5pt;
+}

dist/macos/macgstcopy.sh

@@ -111,6 +111,7 @@ libgstrtsp
 libgstsoup
 libgstspectrum
 libgstspeex
+libgstspotify
 libgsttaglib
 libgsttcp
 libgsttwolame

dist/unix/org.strawberrymusicplayer.strawberry.appdata.xml

@@ -12,11 +12,14 @@
   <summary>A music player and collection organizer</summary>
   <url type="homepage">https://www.strawberrymusicplayer.org/</url>
   <url type="bugtracker">https://github.com/strawberrymusicplayer/strawberry/</url>
-  ​<translation type="qt">strawberry</translation>
+  <developer id="net.jkvinge.jonas">
+    <name>Jonas Kvinge</name>
+  </developer>
+  ​<translation type="gettext">strawberry</translation>
   <content_rating type="oars-1.1" />
   <description>
     <p>
-      Strawberry is a music player and music collection organizer. It is aimed at music collectors and audiophiles. With Strawberry you can play and manage your digital music collection, or stream your favorite radios. It also has unofficial streaming support for Tidal and Qobuz. Strawberry is free software released under GPL. The source code is available on GitHub. It's written in C++ using the Qt toolkit and GStreamer. Strawberry is compatible with both Qt version 5 and 6.
+      Strawberry is a music player and music collection organizer. It is aimed at music collectors and audiophiles. Strawberry is free software released under GPL. It's written in C++ using the Qt framework and GStreamer.
     </p>
     <p>Features:</p>
     <ul>
@@ -30,12 +33,11 @@
       <li>Automatically retrieve tags from MusicBrainz</li>
       <li>Album cover art from Last.fm, Musicbrainz, Discogs, Musixmatch, Deezer, Tidal, Qobuz and Spotify</li>
       <li>Song lyrics from Genius, Musixmatch, ChartLyrics, lyrics.ovh, lololyrics.com, songlyrics.com, azlyrics.com and elyrics.net</li>
-      <li>Support for multiple backends</li>
       <li>Audio analyzer and equalizer</li>
       <li>Transfer music to mass-storage USB players, MTP compatible devices and iPod Nano/Classic</li>
       <li>Scrobbler with support for Last.fm, Libre.fm and ListenBrainz</li>
       <li>Streaming support for Subsonic-compatible servers</li>
-      <li>Unofficial streaming support for Tidal and Qobuz</li>
+      <li>Unofficial streaming support for Tidal, Spotify and Qobuz</li>
     </ul>
   </description>
   <screenshots>
@@ -50,6 +52,8 @@
   </screenshots>
   <update_contact>eclipseo@fedoraproject.org</update_contact>
     <releases>
+        <release version="1.1.3" date="2024-09-21"/>
+        <release version="1.1.2" date="2024-09-12"/>
         <release version="1.1.1" date="2024-07-22"/>
         <release version="1.1.0" date="2024-07-14"/>
         <release version="1.0.23" date="2024-01-11"/>

dist/windows/strawberry.nsi.in

@@ -261,6 +261,7 @@ Section "Strawberry" Strawberry
   File "libFLAC-12.dll"
   File "libbrotlicommon.dll"
   File "libbrotlidec.dll"
+  File "libbrotlienc.dll"
   File "libbs2b-0.dll"
   File "libbz2.dll"
   File "libchromaprint.dll"
@@ -328,6 +329,7 @@ Section "Strawberry" Strawberry
   File "libtasn1-6.dll"
   File "libtwolame-0.dll"
   File "libunistring-5.dll"
+  File "libutf8_validity.dll"
   File "libvorbis-0.dll"
   File "libvorbisenc-2.dll"
   File "libvorbisfile-3.dll"
@@ -450,6 +452,7 @@ Section "Strawberry" Strawberry
   File "liblzma.dll"
   File "libmp3lame.dll"
   File "libopenmpt.dll"
+  File "utf8_validity.dll"
   File "mpcdec.dll"
   File "mpg123.dll"
   File "nghttp2.dll"
@@ -526,13 +529,13 @@ Section "Strawberry" Strawberry
   File "Qt6Widgets.dll"
 !endif
 
-  File "avcodec-60.dll"
+  File "avcodec-61.dll"
-  File "avfilter-9.dll"
+  File "avfilter-10.dll"
-  File "avformat-60.dll"
+  File "avformat-61.dll"
-  File "avutil-58.dll"
+  File "avutil-59.dll"
-  File "postproc-57.dll"
+  File "postproc-58.dll"
-  File "swresample-4.dll"
+  File "swresample-5.dll"
-  File "swscale-7.dll"
+  File "swscale-8.dll"
 
   ; Register Strawberry with Default Programs
   Var /GLOBAL AppIcon
@@ -831,6 +834,7 @@ Section "Uninstall"
   Delete "$INSTDIR\libFLAC-12.dll"
   Delete "$INSTDIR\libbrotlicommon.dll"
   Delete "$INSTDIR\libbrotlidec.dll"
+  Delete "$INSTDIR\libbrotlienc.dll"
   Delete "$INSTDIR\libbs2b-0.dll"
   Delete "$INSTDIR\libbz2.dll"
   Delete "$INSTDIR\libchromaprint.dll"
@@ -898,6 +902,7 @@ Section "Uninstall"
   Delete "$INSTDIR\libtasn1-6.dll"
   Delete "$INSTDIR\libtwolame-0.dll"
   Delete "$INSTDIR\libunistring-5.dll"
+  Delete "$INSTDIR\libutf8_validity.dll"
   Delete "$INSTDIR\libvorbis-0.dll"
   Delete "$INSTDIR\libvorbisenc-2.dll"
   Delete "$INSTDIR\libvorbisfile-3.dll"
@@ -1020,6 +1025,7 @@ Section "Uninstall"
   Delete "$INSTDIR\liblzma.dll"
   Delete "$INSTDIR\libmp3lame.dll"
   Delete "$INSTDIR\libopenmpt.dll"
+  Delete "$INSTDIR\utf8_validity.dll"
   Delete "$INSTDIR\mpcdec.dll"
   Delete "$INSTDIR\mpg123.dll"
   Delete "$INSTDIR\nghttp2.dll"
@@ -1095,13 +1101,13 @@ Section "Uninstall"
   Delete "$INSTDIR\Qt6Widgets.dll"
 !endif
 
-  Delete "$INSTDIR\avcodec-60.dll"
+  Delete "$INSTDIR\avcodec-61.dll"
-  Delete "$INSTDIR\avfilter-9.dll"
+  Delete "$INSTDIR\avfilter-10.dll"
-  Delete "$INSTDIR\avformat-60.dll"
+  Delete "$INSTDIR\avformat-61.dll"
-  Delete "$INSTDIR\avutil-58.dll"
+  Delete "$INSTDIR\avutil-59.dll"
-  Delete "$INSTDIR\postproc-57.dll"
+  Delete "$INSTDIR\postproc-58.dll"
-  Delete "$INSTDIR\swresample-4.dll"
+  Delete "$INSTDIR\swresample-5.dll"
-  Delete "$INSTDIR\swscale-7.dll"
+  Delete "$INSTDIR\swscale-8.dll"
 
 !ifdef mingw
   Delete "$INSTDIR\gio-modules\libgiognutls.dll"

ext/gstmoodbar/CMakeLists.txt

@@ -1,16 +1,7 @@
-cmake_minimum_required(VERSION 3.7)
+cmake_minimum_required(VERSION 3.13)
 
 set(SOURCES gstfastspectrum.cpp gstmoodbarplugin.cpp)
 
-link_directories(
-  ${GLIB_LIBRARY_DIRS}
-  ${GOBJECT_LIBRARY_DIRS}
-  ${GSTREAMER_LIBRARY_DIRS}
-  ${GSTREAMER_BASE_LIBRARY_DIRS}
-  ${GSTREAMER_AUDIO_LIBRARY_DIRS}
-  ${FFTW3_LIBRARY_DIRS}
-)
-
 add_library(gstmoodbar STATIC ${SOURCES})
 
 target_include_directories(gstmoodbar SYSTEM PRIVATE
@@ -24,6 +15,15 @@ target_include_directories(gstmoodbar SYSTEM PRIVATE
 
 target_include_directories(gstmoodbar PRIVATE ${CMAKE_CURRENT_SOURCE_DIR})
 
+target_link_directories(gstmoodbar PRIVATE
+  ${GLIB_LIBRARY_DIRS}
+  ${GOBJECT_LIBRARY_DIRS}
+  ${GSTREAMER_LIBRARY_DIRS}
+  ${GSTREAMER_BASE_LIBRARY_DIRS}
+  ${GSTREAMER_AUDIO_LIBRARY_DIRS}
+  ${FFTW3_LIBRARY_DIRS}
+)
+
 target_link_libraries(gstmoodbar PRIVATE
   ${GLIB_LIBRARIES}
   ${GOBJECT_LIBRARIES}

ext/libstrawberry-common/CMakeLists.txt

@@ -1,4 +1,4 @@
-cmake_minimum_required(VERSION 3.7)
+cmake_minimum_required(VERSION 3.13)
 
 set(SOURCES
   core/logging.cpp
@@ -16,8 +16,6 @@ set(HEADERS
 
 qt_wrap_cpp(MOC ${HEADERS})
 
-link_directories(${GLIB_LIBRARY_DIRS})
-
 add_library(libstrawberry-common STATIC ${SOURCES} ${MOC})
 
 target_include_directories(libstrawberry-common SYSTEM PRIVATE ${GLIB_INCLUDE_DIRS})
@@ -31,6 +29,8 @@ if(Backtrace_FOUND)
   target_include_directories(libstrawberry-common SYSTEM PRIVATE ${Backtrace_INCLUDE_DIRS})
 endif()
 
+target_link_directories(libstrawberry-common PRIVATE ${GLIB_LIBRARY_DIRS})
+
 target_link_libraries(libstrawberry-common PRIVATE
   ${CMAKE_THREAD_LIBS_INIT}
   ${GLIB_LIBRARIES}

ext/libstrawberry-common/core/logging.cpp

@@ -24,7 +24,9 @@
 #include <cstring>
 
 #include <iostream>
+#include <utility>
 #include <memory>
+#include <chrono>
 
 #ifndef _MSC_VER
 #  include <cxxabi.h>
@@ -157,12 +159,13 @@ static void MessageHandler(QtMsgType type, const QMessageLogContext&, const QStr
       break;
   }
 
-  for (const QString &line : message.split(QLatin1Char('\n'))) {
+  const QStringList lines = message.split(QLatin1Char('\n'));
+  for (const QString &line : lines) {
     BufferedDebug d = CreateLogger<BufferedDebug>(level, QStringLiteral("unknown"), -1, nullptr);
     d << line.toLocal8Bit().constData();
     if (d.buf_) {
       d.buf_->close();
-      fprintf(type == QtCriticalMsg || type == QtFatalMsg ? stderr : stdout, "%s\n", d.buf_->buffer().data());
+      fprintf(type == QtCriticalMsg || type == QtFatalMsg ? stderr : stdout, "%s\n", d.buf_->buffer().constData());
       fflush(type == QtCriticalMsg || type == QtFatalMsg ? stderr : stdout);
     }
   }
@@ -193,7 +196,8 @@ void SetLevels(const QString &levels) {
 
   if (!sClassLevels) return;
 
-  for (const QString &item : levels.split(QLatin1Char(','))) {
+  const QStringList items = levels.split(QLatin1Char(','));
+  for (const QString &item : items) {
     const QStringList class_level = item.split(QLatin1Char(':'));
 
     QString class_name;
@@ -310,8 +314,8 @@ QString CXXDemangle(const QString &mangled_function) {
 QString LinuxDemangle(const QString &symbol);
 QString LinuxDemangle(const QString &symbol) {
 
-  QRegularExpression regex(QStringLiteral("\\(([^+]+)"));
+  static const QRegularExpression regex_symbol(QStringLiteral("\\(([^+]+)"));
-  QRegularExpressionMatch match = regex.match(symbol);
+  QRegularExpressionMatch match = regex_symbol.match(symbol);
   if (!match.hasMatch()) {
     return symbol;
   }
@@ -370,20 +374,49 @@ void DumpStackTrace() {
 // It's okay that the LoggedDebug instance is copied to a QDebug in these. It doesn't override any behavior that should be needed after return.
 #define qCreateLogger(line, pretty_function, category, level) logging::CreateLogger<LoggedDebug>(logging::Level_##level, logging::ParsePrettyFunction(pretty_function), line, category)
 
-QDebug CreateLoggerInfo(int line, const char *pretty_function, const char *category) { return qCreateLogger(line, pretty_function, category, Info); }
+QDebug CreateLoggerFatal(const int line, const char *pretty_function, const char *category) { return qCreateLogger(line, pretty_function, category, Fatal); }
-QDebug CreateLoggerFatal(int line, const char *pretty_function, const char *category) { return qCreateLogger(line, pretty_function, category, Fatal); }
+QDebug CreateLoggerError(const int line, const char *pretty_function, const char *category) { return qCreateLogger(line, pretty_function, category, Error); }
-QDebug CreateLoggerError(int line, const char *pretty_function, const char *category) { return qCreateLogger(line, pretty_function, category, Error); }
+
+#ifdef QT_NO_INFO_OUTPUT
+QNoDebug CreateLoggerInfo(const int line, const char *pretty_function, const char *category) {
+
+  Q_UNUSED(line)
+  Q_UNUSED(pretty_function)
+  Q_UNUSED(category)
+
+  return QNoDebug();
+
+}
+#else
+QDebug CreateLoggerInfo(const int line, const char *pretty_function, const char *category) { return qCreateLogger(line, pretty_function, category, Info); }
+#endif // QT_NO_INFO_OUTPUT
 
 #ifdef QT_NO_WARNING_OUTPUT
-  QNoDebug CreateLoggerWarning(int, const char*, const char*) { return QNoDebug(); }
+QNoDebug CreateLoggerWarning(const int line, const char *pretty_function, const char *category) {
+
+  Q_UNUSED(line)
+  Q_UNUSED(pretty_function)
+  Q_UNUSED(category)
+
+  return QNoDebug();
+
+}
 #else
-  QDebug CreateLoggerWarning(int line, const char *pretty_function, const char *category) { return qCreateLogger(line, pretty_function, category, Warning); }
+QDebug CreateLoggerWarning(const int line, const char *pretty_function, const char *category) { return qCreateLogger(line, pretty_function, category, Warning); }
 #endif // QT_NO_WARNING_OUTPUT
 
 #ifdef QT_NO_DEBUG_OUTPUT
-  QNoDebug CreateLoggerDebug(int, const char*, const char*) { return QNoDebug(); }
+QNoDebug CreateLoggerDebug(const int line, const char *pretty_function, const char *category) {
+
+  Q_UNUSED(line)
+  Q_UNUSED(pretty_function)
+  Q_UNUSED(category)
+
+  return QNoDebug();
+
+}
 #else
-  QDebug CreateLoggerDebug(int line, const char *pretty_function, const char *category) { return qCreateLogger(line, pretty_function, category, Debug); }
+QDebug CreateLoggerDebug(const int line, const char *pretty_function, const char *category) { return qCreateLogger(line, pretty_function, category, Debug); }
 #endif // QT_NO_DEBUG_OUTPUT
 
 }  // namespace logging

ext/libstrawberry-common/core/logging.h

@@ -72,20 +72,25 @@ enum Level {
 
   void DumpStackTrace();
 
-QDebug CreateLoggerInfo(int line, const char *pretty_function, const char *category);
+QDebug CreateLoggerFatal(const int line, const char *pretty_function, const char *category);
-QDebug CreateLoggerFatal(int line, const char *pretty_function, const char *category);
+QDebug CreateLoggerError(const int line, const char *pretty_function, const char *category);
-QDebug CreateLoggerError(int line, const char *pretty_function, const char *category);
+
+#ifdef QT_NO_INFO_OUTPUT
+QNoDebug CreateLoggerInfo(const int line, const char *pretty_function, const char *category);
+#else
+QDebug CreateLoggerInfo(const int line, const char *pretty_function, const char *category);
+#endif // QT_NO_INFO_OUTPUT
 
 #ifdef QT_NO_WARNING_OUTPUT
-  QNoDebug CreateLoggerWarning(int, const char*, const char*);
+QNoDebug CreateLoggerWarning(const int line, const char *pretty_function, const char *category);
 #else
-  QDebug CreateLoggerWarning(int line, const char *pretty_function, const char *category);
+QDebug CreateLoggerWarning(const int line, const char *pretty_function, const char *category);
 #endif // QT_NO_WARNING_OUTPUT
 
 #ifdef QT_NO_DEBUG_OUTPUT
-  QNoDebug CreateLoggerDebug(int, const char*, const char*);
+QNoDebug CreateLoggerDebug(const int line, const char *pretty_function, const char *category);
 #else
-  QDebug CreateLoggerDebug(int line, const char *pretty_function, const char *category);
+QDebug CreateLoggerDebug(const int line, const char *pretty_function, const char *category);
 #endif  // QT_NO_DEBUG_OUTPUT
 
 void GLog(const char *domain, int level, const char *message, void *user_data);

ext/libstrawberry-common/core/messagehandler.h

@@ -50,7 +50,7 @@ class _MessageHandlerBase : public QObject {
   // After this is true, messages cannot be sent to the handler any more.
   bool is_device_closed() const { return is_device_closed_; }
 
- protected slots:
+ protected Q_SLOTS:
   void WriteMessage(const QByteArray &data);
   void DeviceReadyRead();
   virtual void DeviceClosed();

ext/libstrawberry-common/core/messagereply.cpp

@@ -41,7 +41,7 @@ void _MessageReplyBase::Abort() {
   finished_ = true;
   success_ = false;
 
-  emit Finished();
+  Q_EMIT Finished();
   qLog(Debug) << "Releasing ID" << id() << "(aborted)";
   semaphore_.release();
 

ext/libstrawberry-common/core/messagereply.h

@@ -45,7 +45,7 @@ class _MessageReplyBase : public QObject {
 
   void Abort();
 
- signals:
+ Q_SIGNALS:
   void Finished();
 
  protected:

ext/libstrawberry-common/core/workerpool.h

@@ -52,11 +52,11 @@ class _WorkerPoolBase : public QObject {
  public:
   explicit _WorkerPoolBase(QObject *parent = nullptr);
 
- signals:
+ Q_SIGNALS:
   // Emitted when a worker failed to start.  This usually happens when the worker wasn't found, or couldn't be executed.
   void WorkerFailedToStart();
 
- protected slots:
+ protected Q_SLOTS:
   virtual void DoStart() {}
   virtual void NewConnection() {}
   virtual void ProcessReadyReadStandardOutput() {}
@@ -293,7 +293,7 @@ void WorkerPool<HandlerType>::StartOneWorker(Worker *worker) {
   QObject::connect(worker->process_, &QProcess::readyReadStandardError, this, &WorkerPool::ProcessReadyReadStandardError);
 
   // Create a server, find an unused name and start listening
-  forever {
+  Q_FOREVER {
     const quint32 unique_number = QRandomGenerator::global()->bounded(static_cast<quint32>(quint64(this) & 0xFFFFFFFF));
     const QString name = QStringLiteral("%1_%2").arg(local_server_name_).arg(unique_number);
 
@@ -357,7 +357,7 @@ void WorkerPool<HandlerType>::ProcessError(QProcess::ProcessError error) {
       // Failed to start errors are bad - it usually means the worker isn't installed.
       // Don't restart the process, but tell our owner, who will probably want to do something fatal.
       qLog(Error) << "Worker failed to start";
-      emit WorkerFailedToStart();
+      Q_EMIT WorkerFailedToStart();
       break;
 
     default:

ext/libstrawberry-tagreader/CMakeLists.txt

@@ -1,4 +1,4 @@
-cmake_minimum_required(VERSION 3.7)
+cmake_minimum_required(VERSION 3.13)
 
 # Workaround a bug in protobuf-generate.cmake (https://github.com/protocolbuffers/protobuf/issues/12450)
 if(NOT protobuf_PROTOC_EXE)
@@ -19,19 +19,6 @@ if(HAVE_TAGPARSER)
   list(APPEND SOURCES tagreadertagparser.cpp)
 endif()
 
-link_directories(
-  ${GLIB_LIBRARY_DIRS}
-  ${PROTOBUF_LIBRARY_DIRS}
-)
-
-if(HAVE_TAGLIB)
-  link_directories(${TAGLIB_LIBRARY_DIRS})
-endif()
-
-if(HAVE_TAGPARSER)
-  link_directories(${TAGPARSER_LIBRARY_DIRS})
-endif()
-
 add_library(libstrawberry-tagreader STATIC ${PROTO_SOURCES} ${SOURCES})
 
 target_include_directories(libstrawberry-tagreader SYSTEM PRIVATE
@@ -47,6 +34,11 @@ target_include_directories(libstrawberry-tagreader PRIVATE
   ${CMAKE_BINARY_DIR}/src
 )
 
+target_link_directories(libstrawberry-tagreader PRIVATE
+  ${GLIB_LIBRARY_DIRS}
+  ${PROTOBUF_LIBRARY_DIRS}
+)
+
 target_link_libraries(libstrawberry-tagreader PRIVATE
   ${GLIB_LIBRARIES}
   ${Protobuf_LIBRARIES}
@@ -58,11 +50,13 @@ target_link_libraries(libstrawberry-tagreader PRIVATE
 
 if(HAVE_TAGLIB)
   target_include_directories(libstrawberry-tagreader SYSTEM PRIVATE ${TAGLIB_INCLUDE_DIRS})
+  target_link_directories(libstrawberry-tagreader PRIVATE ${TAGLIB_LIBRARY_DIRS})
   target_link_libraries(libstrawberry-tagreader PRIVATE ${TAGLIB_LIBRARIES})
 endif()
 
 if(HAVE_TAGPARSER)
   target_include_directories(libstrawberry-tagreader SYSTEM PRIVATE ${TAGPARSER_INCLUDE_DIRS})
+  target_link_directories(libstrawberry-tagreader PRIVATE ${TAGPARSER_LIBRARY_DIRS})
   target_link_libraries(libstrawberry-tagreader PRIVATE ${TAGPARSER_LIBRARIES})
 endif()
 

ext/libstrawberry-tagreader/tagreaderbase.cpp

@@ -32,6 +32,7 @@
 #include "tagreaderbase.h"
 
 TagReaderBase::TagReaderBase() = default;
+TagReaderBase::~TagReaderBase() = default;
 
 QString TagReaderBase::ErrorString(const Result &result) {
 

ext/libstrawberry-tagreader/tagreaderbase.h

@@ -34,7 +34,7 @@
 class TagReaderBase {
  public:
   explicit TagReaderBase();
-  ~TagReaderBase() = default;
+  virtual ~TagReaderBase();
 
   class Result {
    public:

ext/libstrawberry-tagreader/tagreadergme.cpp

@@ -229,6 +229,7 @@ TagReaderBase::Result GME::VGM::Read(const QFileInfo &fileinfo, spb::tagreader::
 
   file.seek(static_cast<qint64>(GD3_TAG_PTR + pt));
   QByteArray gd3_version = file.read(4);
+  Q_UNUSED(gd3_version)
 
   file.seek(file.pos() + 4);
   QByteArray gd3_length_bytes = file.read(4);

ext/libstrawberry-tagreader/tagreadergme.h

@@ -99,7 +99,6 @@ class TagReaderGME : public TagReaderBase {
 
  public:
   explicit TagReaderGME();
-  ~TagReaderGME() = default;
 
   bool IsMediaFile(const QString &filename) const override;
 

ext/libstrawberry-tagreader/tagreadertaglib.cpp

@@ -798,13 +798,13 @@ void TagReaderTagLib::ParseMP4Tags(TagLib::MP4::Tag *tag, QString *disc, QString
   }
 
   if (tag->contains(kMP4_MusicBrainz_AlbumArtistId)) {
-    AssignTagLibStringToStdString(tag->item(kMP4_MusicBrainz_AlbumArtistId).toStringList().toString(), song->mutable_musicbrainz_album_artist_id());
+    AssignTagLibStringToStdString(TagLibStringListToSlashSeparatedString(tag->item(kMP4_MusicBrainz_AlbumArtistId).toStringList()), song->mutable_musicbrainz_album_artist_id());
   }
   if (tag->contains(kMP4_MusicBrainz_ArtistId)) {
-    AssignTagLibStringToStdString(tag->item(kMP4_MusicBrainz_ArtistId).toStringList().toString(), song->mutable_musicbrainz_artist_id());
+    AssignTagLibStringToStdString(TagLibStringListToSlashSeparatedString(tag->item(kMP4_MusicBrainz_ArtistId).toStringList()), song->mutable_musicbrainz_artist_id());
   }
   if (tag->contains(kMP4_MusicBrainz_OriginalArtistId)) {
-    AssignTagLibStringToStdString(tag->item(kMP4_MusicBrainz_OriginalArtistId).toStringList().toString(), song->mutable_musicbrainz_original_artist_id());
+    AssignTagLibStringToStdString(TagLibStringListToSlashSeparatedString(tag->item(kMP4_MusicBrainz_OriginalArtistId).toStringList()), song->mutable_musicbrainz_original_artist_id());
   }
   if (tag->contains(kMP4_MusicBrainz_AlbumId)) {
     AssignTagLibStringToStdString(tag->item(kMP4_MusicBrainz_AlbumId).toStringList().toString(), song->mutable_musicbrainz_album_id());
@@ -825,7 +825,7 @@ void TagReaderTagLib::ParseMP4Tags(TagLib::MP4::Tag *tag, QString *disc, QString
     AssignTagLibStringToStdString(tag->item(kMP4_MusicBrainz_ReleaseGroupId).toStringList().toString(), song->mutable_musicbrainz_release_group_id());
   }
   if (tag->contains(kMP4_MusicBrainz_WorkId)) {
-    AssignTagLibStringToStdString(tag->item(kMP4_MusicBrainz_WorkId).toStringList().toString(), song->mutable_musicbrainz_work_id());
+    AssignTagLibStringToStdString(TagLibStringListToSlashSeparatedString(tag->item(kMP4_MusicBrainz_WorkId).toStringList()), song->mutable_musicbrainz_work_id());
   }
 
 }
@@ -1211,7 +1211,7 @@ void TagReaderTagLib::SetUnsyncLyricsFrame(const std::string &value, TagLib::ID3
   // If no frames stored create empty frame
   if (frames_buffer.isEmpty()) {
     TagLib::ID3v2::UnsynchronizedLyricsFrame frame(TagLib::String::UTF8);
-    frame.setDescription("Clementine editor");
+    frame.setDescription("Strawberry editor");
     frames_buffer.push_back(frame.render());
   }
 
@@ -1870,3 +1870,17 @@ TagReaderBase::Result TagReaderTagLib::SaveSongRatingToFile(const QString &filen
   return success ? Result::ErrorCode::Success : Result::ErrorCode::FileSaveError;
 
 }
+
+TagLib::String TagReaderTagLib::TagLibStringListToSlashSeparatedString(const TagLib::StringList &taglib_string_list) {
+
+  TagLib::String result_string;
+  for (const TagLib::String &taglib_string : taglib_string_list) {
+    if (!result_string.isEmpty()) {
+      result_string += '/';
+    }
+    result_string += taglib_string;
+  }
+
+  return result_string;
+
+}

ext/libstrawberry-tagreader/tagreadertaglib.h

@@ -55,7 +55,7 @@ class FileRefFactory;
 class TagReaderTagLib : public TagReaderBase {
  public:
   explicit TagReaderTagLib();
-  ~TagReaderTagLib();
+  ~TagReaderTagLib() override;
 
   static inline TagLib::String StdStringToTagLibString(const std::string &s) {
     return TagLib::String(s.c_str(), TagLib::String::UTF8);
@@ -86,7 +86,7 @@ class TagReaderTagLib : public TagReaderBase {
   Result ReadFile(const QString &filename, spb::tagreader::SongMetadata *song) const override;
   Result WriteFile(const QString &filename, const spb::tagreader::WriteFileRequest &request) const override;
 
-  Result LoadEmbeddedArt(const QString &filename, QByteArray &data) const;
+  Result LoadEmbeddedArt(const QString &filename, QByteArray &data) const override;
   Result SaveEmbeddedArt(const QString &filename, const spb::tagreader::SaveEmbeddedArtRequest &request) const override;
 
   Result SaveSongPlaycountToFile(const QString &filename, const uint playcount) const override;
@@ -136,6 +136,8 @@ class TagReaderTagLib : public TagReaderBase {
   void SetEmbeddedArt(TagLib::ID3v2::Tag *tag, const QByteArray &data, const QString &mime_type) const;
   void SetEmbeddedArt(TagLib::MP4::File *aac_file, TagLib::MP4::Tag *tag, const QByteArray &data, const QString &mime_type) const;
 
+  static TagLib::String TagLibStringListToSlashSeparatedString(const TagLib::StringList &taglib_string_list);
+
  private:
   FileRefFactory *factory_;
 

ext/libstrawberry-tagreader/tagreadertagparser.cpp

@@ -46,8 +46,6 @@
 
 TagReaderTagParser::TagReaderTagParser() = default;
 
-TagReaderTagParser::~TagReaderTagParser() = default;
-
 bool TagReaderTagParser::IsMediaFile(const QString &filename) const {
 
   qLog(Debug) << "Checking for valid file" << filename;

ext/libstrawberry-tagreader/tagreadertagparser.h

@@ -37,7 +37,6 @@
 class TagReaderTagParser : public TagReaderBase {
  public:
   explicit TagReaderTagParser();
-  ~TagReaderTagParser();
 
   bool IsMediaFile(const QString &filename) const override;
 

ext/macdeploycheck/CMakeLists.txt

@@ -1,5 +1,7 @@
+cmake_minimum_required(VERSION 3.13)
+
 qt_wrap_cpp(MACDEPLOYCHECK_MOC ${CMAKE_SOURCE_DIR}/ext/libstrawberry-common/core/logging.h)
-link_directories(${GLIB_LIBRARY_DIRS})
+
 add_executable(macdeploycheck macdeploycheck.cpp ${CMAKE_SOURCE_DIR}/ext/libstrawberry-common/core/logging.cpp ${MACDEPLOYCHECK_MOC})
 target_include_directories(macdeploycheck PUBLIC SYSTEM
   ${GLIB_INCLUDE_DIRS}
@@ -8,6 +10,7 @@ target_include_directories(macdeploycheck PUBLIC
   ${CMAKE_SOURCE_DIR}/ext/libstrawberry-common
   ${CMAKE_BINARY_DIR}/src
 )
+target_link_directories(macdeploycheck PUBLIC ${GLIB_LIBRARY_DIRS})
 target_link_libraries(macdeploycheck PUBLIC
   "-framework AppKit"
   ${GLIB_LIBRARIES}

ext/strawberry-tagreader/CMakeLists.txt

@@ -1,4 +1,4 @@
-cmake_minimum_required(VERSION 3.7)
+cmake_minimum_required(VERSION 3.13)
 
 set(EXECUTABLE_OUTPUT_PATH ${CMAKE_BINARY_DIR})
 
@@ -7,16 +7,6 @@ set(HEADERS tagreaderworker.h)
 
 qt_wrap_cpp(MOC ${HEADERS})
 
-link_directories(${GLIB_LIBRARY_DIRS})
-
-if(HAVE_TAGLIB)
-  link_directories(${TAGLIB_LIBRARY_DIRS})
-endif()
-
-if(HAVE_TAGPARSER)
-  link_directories(${TAGPARSER_LIBRARY_DIRS})
-endif()
-
 add_executable(strawberry-tagreader ${SOURCES} ${MOC} ${QRC})
 
 target_include_directories(strawberry-tagreader SYSTEM PRIVATE
@@ -31,6 +21,8 @@ target_include_directories(strawberry-tagreader PRIVATE
   ${CMAKE_BINARY_DIR}/src
 )
 
+target_link_directories(strawberry-tagreader PRIVATE ${GLIB_LIBRARY_DIRS})
+
 target_link_libraries(strawberry-tagreader PRIVATE
   ${GLIB_LIBRARIES}
   Qt${QT_VERSION_MAJOR}::Core
@@ -41,11 +33,13 @@ target_link_libraries(strawberry-tagreader PRIVATE
 
 if(HAVE_TAGLIB)
   target_include_directories(strawberry-tagreader SYSTEM PRIVATE ${TAGLIB_INCLUDE_DIRS})
+  target_link_directories(strawberry-tagreader PRIVATE ${TAGLIB_LIBRARY_DIRS})
   target_link_libraries(strawberry-tagreader PRIVATE ${TAGLIB_LIBRARIES})
 endif()
 
 if(HAVE_TAGPARSER)
   target_include_directories(strawberry-tagreader SYSTEM PRIVATE ${TAGPARSER_INCLUDE_DIRS})
+  target_link_directories(strawberry-tagreader PRIVATE ${TAGPARSER_LIBRARY_DIRS})
   target_link_libraries(strawberry-tagreader PRIVATE ${TAGPARSER_LIBRARIES})
 endif()
 

ext/strawberry-tagreader/tagreaderworker.cpp

@@ -18,6 +18,7 @@
 
 #include "config.h"
 
+#include <utility>
 #include <memory>
 #include <string>
 
@@ -73,7 +74,7 @@ void TagReaderWorker::DeviceClosed() {
 
 void TagReaderWorker::HandleMessage(const spb::tagreader::Message &message, spb::tagreader::Message &reply) {
 
-  for (shared_ptr<TagReaderBase> reader : tagreaders_) {
+  for (shared_ptr<TagReaderBase> reader : std::as_const(tagreaders_)) {
 
     if (message.has_is_media_file_request()) {
       const QString filename = QString::fromStdString(message.is_media_file_request().filename());

src/CMakeLists.txt

@@ -1,4 +1,4 @@
-cmake_minimum_required(VERSION 3.7)
+cmake_minimum_required(VERSION 3.13)
 
 if(HAVE_TRANSLATIONS)
   include(../cmake/Translations.cmake)
@@ -41,6 +41,9 @@ set(SOURCES
   core/translations.cpp
   core/systemtrayicon.cpp
   core/localredirectserver.cpp
+  core/mimedata.cpp
+  core/potranslator.cpp
+  core/temporaryfile.cpp
   utilities/strutils.cpp
   utilities/envutils.cpp
   utilities/colorutils.cpp
@@ -110,8 +113,10 @@ set(SOURCES
   playlist/playlistfilter.cpp
   playlist/playlistheader.cpp
   playlist/playlistitem.cpp
+  playlist/playlistitemmimedata.cpp
   playlist/playlistlistcontainer.cpp
   playlist/playlistlistmodel.cpp
+  playlist/playlistlistsortfiltermodel.cpp
   playlist/playlistlistview.cpp
   playlist/playlistmanager.cpp
   playlist/playlistsaveoptionsdialog.cpp
@@ -120,6 +125,7 @@ set(SOURCES
   playlist/playlistundocommands.cpp
   playlist/playlistview.cpp
   playlist/playlistproxystyle.cpp
+  playlist/songmimedata.cpp
   playlist/songloaderinserter.cpp
   playlist/songplaylistitem.cpp
   playlist/dynamicplaylistcontrols.cpp
@@ -140,17 +146,23 @@ set(SOURCES
 
   smartplaylists/playlistgenerator.cpp
   smartplaylists/playlistgeneratorinserter.cpp
+  smartplaylists/playlistgeneratormimedata.cpp
   smartplaylists/playlistquerygenerator.cpp
   smartplaylists/smartplaylistquerywizardplugin.cpp
+  smartplaylists/smartplaylistquerywizardpluginsortpage.cpp
+  smartplaylists/smartplaylistquerywizardpluginsearchpage.cpp
   smartplaylists/smartplaylistsearch.cpp
   smartplaylists/smartplaylistsearchpreview.cpp
   smartplaylists/smartplaylistsearchterm.cpp
   smartplaylists/smartplaylistsearchtermwidget.cpp
+  smartplaylists/smartplaylistsearchtermwidgetoverlay.cpp
   smartplaylists/smartplaylistsmodel.cpp
   smartplaylists/smartplaylistsviewcontainer.cpp
   smartplaylists/smartplaylistsview.cpp
   smartplaylists/smartplaylistwizard.cpp
   smartplaylists/smartplaylistwizardplugin.cpp
+  smartplaylists/smartplaylistwizardtypepage.cpp
+  smartplaylists/smartplaylistwizardfinishpage.cpp
 
   covermanager/albumcovermanager.cpp
   covermanager/albumcovermanagerlist.cpp
@@ -195,6 +207,7 @@ set(SOURCES
   lyrics/azlyricscomlyricsprovider.cpp
   lyrics/elyricsnetlyricsprovider.cpp
   lyrics/letraslyricsprovider.cpp
+  lyrics/lyricfindlyricsprovider.cpp
 
   providers/musixmatchprovider.cpp
 
@@ -230,6 +243,8 @@ set(SOURCES
   widgets/busyindicator.cpp
   widgets/clickablelabel.cpp
   widgets/fancytabwidget.cpp
+  widgets/fancytabbar.cpp
+  widgets/fancytabdata.cpp
   widgets/favoritewidget.cpp
   widgets/fileview.cpp
   widgets/fileviewlist.cpp
@@ -268,6 +283,7 @@ set(SOURCES
   streaming/streamingcollectionview.cpp
   streaming/streamingcollectionviewcontainer.cpp
   streaming/streamingsearchview.cpp
+  streaming/streamsongmimedata.cpp
 
   radios/radioservices.cpp
   radios/radiobackend.cpp
@@ -279,6 +295,7 @@ set(SOURCES
   radios/radiochannel.cpp
   radios/somafmservice.cpp
   radios/radioparadiseservice.cpp
+  radios/radiomimedata.cpp
 
   scrobbler/audioscrobbler.cpp
   scrobbler/scrobblersettings.cpp
@@ -294,6 +311,8 @@ set(SOURCES
 
   organize/organize.cpp
   organize/organizeformat.cpp
+  organize/organizeformatvalidator.cpp
+  organize/organizesyntaxhighlighter.cpp
   organize/organizedialog.cpp
   organize/organizeerrordialog.cpp
 
@@ -396,13 +415,18 @@ set(HEADERS
   smartplaylists/playlistquerygenerator.h
   smartplaylists/playlistgeneratormimedata.h
   smartplaylists/smartplaylistquerywizardplugin.h
+  smartplaylists/smartplaylistquerywizardpluginsortpage.h
+  smartplaylists/smartplaylistquerywizardpluginsearchpage.h
   smartplaylists/smartplaylistsearchpreview.h
   smartplaylists/smartplaylistsearchtermwidget.h
+  smartplaylists/smartplaylistsearchtermwidgetoverlay.h
   smartplaylists/smartplaylistsmodel.h
   smartplaylists/smartplaylistsviewcontainer.h
   smartplaylists/smartplaylistsview.h
   smartplaylists/smartplaylistwizard.h
   smartplaylists/smartplaylistwizardplugin.h
+  smartplaylists/smartplaylistwizardtypepage.h
+  smartplaylists/smartplaylistwizardfinishpage.h
 
   covermanager/albumcovermanager.h
   covermanager/albumcovermanagerlist.h
@@ -443,6 +467,7 @@ set(HEADERS
   lyrics/azlyricscomlyricsprovider.h
   lyrics/elyricsnetlyricsprovider.h
   lyrics/letraslyricsprovider.h
+  lyrics/lyricfindlyricsprovider.h
 
   settings/settingsdialog.h
   settings/settingspage.h
@@ -476,6 +501,8 @@ set(HEADERS
   widgets/busyindicator.h
   widgets/clickablelabel.h
   widgets/fancytabwidget.h
+  widgets/fancytabbar.h
+  widgets/fancytabdata.h
   widgets/favoritewidget.h
   widgets/fileview.h
   widgets/fileviewlist.h
@@ -495,7 +522,7 @@ set(HEADERS
   widgets/tracksliderpopup.h
   widgets/tracksliderslider.h
   widgets/loginstatewidget.h
-  widgets/qsearchfield.h
+  widgets/searchfield.h
   widgets/ratingwidget.h
   widgets/forcescrollperpixel.h
   widgets/resizabletextedit.h
@@ -536,6 +563,8 @@ set(HEADERS
   scrobbler/lastfmimport.h
 
   organize/organize.h
+  organize/organizeformatvalidator.h
+  organize/organizesyntaxhighlighter.h
   organize/organizedialog.h
   organize/organizeerrordialog.h
 
@@ -621,7 +650,7 @@ option(USE_INSTALL_PREFIX "Look for data in CMAKE_INSTALL_PREFIX" ON)
 
 if(NOT APPLE)
   set(NOT_APPLE ON)
-  optional_source(NOT_APPLE SOURCES widgets/qsearchfield_qt.cpp core/qtsystemtrayicon.cpp HEADERS core/qtsystemtrayicon.h)
+  optional_source(NOT_APPLE SOURCES widgets/searchfield_qt.cpp widgets/searchfield_qt_private.cpp core/qtsystemtrayicon.cpp HEADERS core/qtsystemtrayicon.h widgets/searchfield_qt_private.h)
 endif()
 
 if(HAVE_GLOBALSHORTCUTS)
@@ -760,6 +789,7 @@ optional_source(HAVE_LIBPULSE SOURCES engine/pulsedevicefinder.cpp)
 optional_source(HAVE_GSTREAMER
 SOURCES
   transcoder/transcoder.cpp
+  transcoder/transcoderoptionsinterface.cpp
   transcoder/transcodedialog.cpp
   transcoder/transcoderoptionsdialog.cpp
   transcoder/transcoderoptionsflac.cpp
@@ -838,7 +868,7 @@ optional_source(APPLE
     core/macsystemtrayicon.mm
     core/macfslistener.mm
     osd/osdmac.mm
-    widgets/qsearchfield_mac.mm
+    widgets/searchfield_mac.mm
     engine/macosdevicefinder.cpp
     globalshortcuts/globalshortcutsbackend-macos.mm
     globalshortcuts/globalshortcutgrabber.mm
@@ -1000,95 +1030,20 @@ if(HAVE_TRANSLATIONS)
     endif(NOT LINGUAS OR LINGUAS STREQUAL "None")
   endif(LINGUAS STREQUAL "All")
 
-  add_pot(POT
+  if(NOT MSVC)
-    ${CMAKE_CURRENT_SOURCE_DIR}/translations/header
+    add_pot(POT
-    ${CMAKE_CURRENT_SOURCE_DIR}/translations/translations.pot
+      ${CMAKE_CURRENT_SOURCE_DIR}/translations/header
-    ${SOURCES}
+      ${CMAKE_CURRENT_SOURCE_DIR}/translations/translations.pot
-    ${MOC}
+      ${SOURCES}
-    ${UIC}
+      ${MOC}
-    ${CMAKE_SOURCE_DIR}/data/html/oauthsuccess.html
+      ${UIC}
-  )
+      ${CMAKE_SOURCE_DIR}/data/html/oauthsuccess.html
+    )
+  endif()
   add_po(PO strawberry_ LANGUAGES ${LANGUAGES} DIRECTORY translations)
 
 endif(HAVE_TRANSLATIONS)
 
-link_directories(
-  ${Boost_LIBRARY_DIRS}
-  ${GLIB_LIBRARY_DIRS}
-  ${GOBJECT_LIBRARY_DIRS}
-  ${SQLITE_LIBRARY_DIRS}
-  ${PROTOBUF_LIBRARY_DIRS}
-  ${SINGLEAPPLICATION_LIBRARY_DIRS}
-  ${ICU_LIBRARY_DIRS}
-)
-
-if(HAVE_ALSA)
-  link_directories(${ALSA_LIBRARY_DIRS})
-endif()
-
-if(HAVE_LIBPULSE)
-  link_directories(${LIBPULSE_LIBRARY_DIRS})
-endif()
-
-if(HAVE_GSTREAMER)
-  link_directories(
-    ${GSTREAMER_LIBRARY_DIRS}
-    ${GSTREAMER_BASE_LIBRARY_DIRS}
-    ${GSTREAMER_APP_LIBRARY_DIRS}
-    ${GSTREAMER_AUDIO_LIBRARY_DIRS}
-    ${GSTREAMER_TAG_LIBRARY_DIRS}
-    ${GSTREAMER_PBUTILS_LIBRARY_DIRS}
-  )
-endif()
-
-if(HAVE_VLC)
-  link_directories(${LIBVLC_LIBRARY_DIRS})
-endif()
-
-if(HAVE_SONGFINGERPRINTING OR HAVE_MUSICBRAINZ)
-  link_directories(${CHROMAPRINT_LIBRARY_DIRS})
-endif()
-
-if(X11_FOUND)
-  link_directories(${X11_LIBRARY_DIRS})
-endif()
-
-if(XCB_FOUND)
-  link_directories(${XCB_LIBRARY_DIRS})
-endif()
-
-if(HAVE_GIO)
-  link_directories(${GIO_LIBRARY_DIRS})
-endif()
-
-if(HAVE_GIO_UNIX)
-  link_directories(${GIO_UNIX_LIBRARY_DIRS})
-endif()
-
-if(HAVE_AUDIOCD)
-  link_directories(${LIBCDIO_LIBRARY_DIRS})
-endif()
-
-if(HAVE_LIBGPOD)
-  link_directories(${LIBGPOD_LIBRARY_DIRS} ${GDK_PIXBUF_LIBRARY_DIRS})
-endif()
-
-if(HAVE_LIBMTP)
-  link_directories(${LIBMTP_LIBRARY_DIRS})
-endif()
-
-if(HAVE_TAGLIB)
-  link_directories(${TAGLIB_LIBRARY_DIRS})
-endif()
-
-if(HAVE_TAGPARSER)
-  link_directories(${TAGPARSER_LIBRARY_DIRS})
-endif()
-
-if(HAVE_QTSPARKLE)
-  link_directories(${QTSPARKLE_LIBRARY_DIRS})
-endif()
-
 add_library(strawberry_lib STATIC
   ${SOURCES}
   ${MOC}
@@ -1123,6 +1078,16 @@ target_include_directories(strawberry_lib PUBLIC
   ${SINGLEAPPLICATION_INCLUDE_DIRS}
 )
 
+target_link_directories(strawberry_lib PUBLIC
+  ${Boost_LIBRARY_DIRS}
+  ${GLIB_LIBRARY_DIRS}
+  ${GOBJECT_LIBRARY_DIRS}
+  ${SQLITE_LIBRARY_DIRS}
+  ${PROTOBUF_LIBRARY_DIRS}
+  ${SINGLEAPPLICATION_LIBRARY_DIRS}
+  ${ICU_LIBRARY_DIRS}
+)
+
 target_link_libraries(strawberry_lib PUBLIC
   ${CMAKE_THREAD_LIBS_INIT}
   ${GLIB_LIBRARIES}
@@ -1151,11 +1116,13 @@ endif()
 
 if(HAVE_ALSA)
   target_include_directories(strawberry_lib SYSTEM PRIVATE ${ALSA_INCLUDE_DIRS})
+  target_link_directories(strawberry_lib PRIVATE ${ALSA_LIBRARY_DIRS})
   target_link_libraries(strawberry_lib PRIVATE ${ALSA_LIBRARIES})
 endif()
 
 if(HAVE_LIBPULSE)
   target_include_directories(strawberry_lib SYSTEM PRIVATE ${LIBPULSE_INCLUDE_DIRS})
+  target_link_directories(strawberry_lib PRIVATE ${LIBPULSE_LIBRARY_DIRS})
   target_link_libraries(strawberry_lib PRIVATE ${LIBPULSE_LIBRARIES})
 endif()
 
@@ -1168,6 +1135,14 @@ if(HAVE_GSTREAMER)
     ${GSTREAMER_TAG_INCLUDE_DIRS}
     ${GSTREAMER_PBUTILS_INCLUDE_DIRS}
   )
+  target_link_directories(strawberry_lib PRIVATE
+    ${GSTREAMER_LIBRARY_DIRS}
+    ${GSTREAMER_BASE_LIBRARY_DIRS}
+    ${GSTREAMER_APP_LIBRARY_DIRS}
+    ${GSTREAMER_AUDIO_LIBRARY_DIRS}
+    ${GSTREAMER_TAG_LIBRARY_DIRS}
+    ${GSTREAMER_PBUTILS_LIBRARY_DIRS}
+  )
   target_link_libraries(strawberry_lib PRIVATE
     ${GSTREAMER_LIBRARIES}
     ${GSTREAMER_BASE_LIBRARIES}
@@ -1184,11 +1159,13 @@ endif()
 
 if(HAVE_VLC)
   target_include_directories(strawberry_lib SYSTEM PRIVATE ${LIBVLC_INCLUDE_DIRS})
+  target_link_directories(strawberry_lib PRIVATE ${LIBVLC_LIBRARY_DIRS})
   target_link_libraries(strawberry_lib PRIVATE ${LIBVLC_LIBRARIES})
 endif()
 
 if(HAVE_SONGFINGERPRINTING OR HAVE_MUSICBRAINZ)
   target_include_directories(strawberry_lib SYSTEM PRIVATE ${CHROMAPRINT_INCLUDE_DIRS})
+  target_link_directories(strawberry_lib PRIVATE ${CHROMAPRINT_LIBRARY_DIRS})
   target_link_libraries(strawberry_lib PRIVATE ${CHROMAPRINT_LIBRARIES})
 endif()
 
@@ -1198,36 +1175,43 @@ endif()
 
 if(X11_FOUND)
   target_include_directories(strawberry_lib SYSTEM PRIVATE ${X11_INCLUDE_DIR})
+  target_link_directories(strawberry_lib PRIVATE ${X11_LIBRARY_DIRS})
   target_link_libraries(strawberry_lib PRIVATE ${X11_LIBRARIES})
 endif()
 
 if(XCB_FOUND)
   target_include_directories(strawberry_lib SYSTEM PRIVATE ${XCB_INCLUDE_DIR})
+  target_link_directories(strawberry_lib PRIVATE ${XCB_LIBRARY_DIRS})
   target_link_libraries(strawberry_lib PRIVATE ${XCB_LIBRARIES})
 endif()
 
 if(HAVE_GIO)
   target_include_directories(strawberry_lib SYSTEM PRIVATE ${GIO_INCLUDE_DIRS})
+  target_link_directories(strawberry_lib PRIVATE ${GIO_LIBRARY_DIRS})
   target_link_libraries(strawberry_lib PRIVATE ${GIO_LIBRARIES})
 endif()
 
 if(HAVE_GIO_UNIX)
   target_include_directories(strawberry_lib SYSTEM PRIVATE ${GIO_UNIX_INCLUDE_DIRS})
+  target_link_directories(strawberry_lib PRIVATE ${GIO_UNIX_LIBRARY_DIRS})
   target_link_libraries(strawberry_lib PRIVATE ${GIO_UNIX_LIBRARIES})
 endif()
 
 if(HAVE_AUDIOCD)
   target_include_directories(strawberry_lib SYSTEM PRIVATE ${LIBCDIO_INCLUDE_DIRS})
+  target_link_directories(strawberry_lib PRIVATE ${LIBCDIO_LIBRARY_DIRS})
   target_link_libraries(strawberry_lib PRIVATE ${LIBCDIO_LIBRARIES})
 endif()
 
 if(HAVE_LIBGPOD)
   target_include_directories(strawberry_lib SYSTEM PRIVATE ${LIBGPOD_INCLUDE_DIRS} ${GDK_PIXBUF_INCLUDE_DIRS})
+  target_link_directories(strawberry_lib PRIVATE ${LIBGPOD_LIBRARY_DIRS} ${GDK_PIXBUF_LIBRARY_DIRS})
   target_link_libraries(strawberry_lib PRIVATE ${LIBGPOD_LIBRARIES} ${GDK_PIXBUF_LIBRARIES})
 endif()
 
 if(HAVE_LIBMTP)
   target_include_directories(strawberry_lib SYSTEM PRIVATE ${LIBMTP_INCLUDE_DIRS})
+  target_link_directories(strawberry_lib PRIVATE ${LIBMTP_LIBRARY_DIRS})
   target_link_libraries(strawberry_lib PRIVATE ${LIBMTP_LIBRARIES})
 endif()
 
@@ -1259,6 +1243,7 @@ endif()
 
 if(HAVE_QTSPARKLE)
   target_include_directories(strawberry_lib SYSTEM PRIVATE ${QTSPARKLE_INCLUDE_DIRS})
+  target_link_directories(strawberry_lib PRIVATE ${QTSPARKLE_LIBRARY_DIRS})
   target_link_libraries(strawberry_lib PRIVATE ${QTSPARKLE_LIBRARIES})
 endif()
 

src/analyzer/analyzercontainer.cpp

@@ -130,7 +130,7 @@ void AnalyzerContainer::ShowPopupMenu() {
 }
 
 void AnalyzerContainer::wheelEvent(QWheelEvent *e) {
-  emit WheelEvent(e->angleDelta().y());
+  Q_EMIT WheelEvent(e->angleDelta().y());
 }
 
 void AnalyzerContainer::SetEngine(SharedPtr<EngineBase> engine) {
@@ -149,7 +149,7 @@ void AnalyzerContainer::DisableAnalyzer() {
 
 void AnalyzerContainer::ChangeAnalyzer(const int id) {
 
-  QObject *instance = analyzer_types_[id]->newInstance(Q_ARG(QWidget*, this));
+  QObject *instance = analyzer_types_.at(id)->newInstance(Q_ARG(QWidget*, this));
 
   if (!instance) {
     qLog(Warning) << "Couldn't initialize a new" << analyzer_types_[id]->className();
@@ -200,18 +200,25 @@ void AnalyzerContainer::Load() {
     for (int i = 0; i < analyzer_types_.count(); ++i) {
       if (type == QString::fromLatin1(analyzer_types_[i]->className())) {
         ChangeAnalyzer(i);
-        actions_[i]->setChecked(true);
+        QAction *action = actions_.value(i);
+        action->setChecked(true);
         break;
       }
     }
+    if (!current_analyzer_) {
+      ChangeAnalyzer(0);
+      QAction *action = actions_.value(0);
+      action->setChecked(true);
+    }
   }
 
   // Framerate
-  QList<QAction*> actions = group_framerate_->actions();
+  const QList<QAction*> actions = group_framerate_->actions();
   for (int i = 0; i < framerate_list_.count(); ++i) {
-    if (current_framerate_ == framerate_list_[i]) {
+    if (current_framerate_ == framerate_list_.value(i)) {
       ChangeFramerate(current_framerate_);
-      actions[i]->setChecked(true);
+      QAction *action = actions[i];
+      action->setChecked(true);
       break;
     }
   }

src/analyzer/analyzercontainer.h

@@ -50,14 +50,14 @@ class AnalyzerContainer : public QWidget {
   static const char *kSettingsGroup;
   static const char *kSettingsFramerate;
 
- signals:
+ Q_SIGNALS:
   void WheelEvent(const int delta);
 
  protected:
   void mouseReleaseEvent(QMouseEvent *e) override;
   void wheelEvent(QWheelEvent *e) override;
 
- private slots:
+ private Q_SLOTS:
   void ChangeAnalyzer(const int id);
   void ChangeFramerate(int new_framerate);
   void DisableAnalyzer();

src/analyzer/blockanalyzer.cpp

@@ -36,12 +36,14 @@
 #include "analyzerbase.h"
 #include "fht.h"
 
-const int BlockAnalyzer::kHeight = 2;
+namespace {
-const int BlockAnalyzer::kWidth = 4;
+constexpr int kHeight = 2;
-const int BlockAnalyzer::kMinRows = 3;       // arbitrary
+constexpr int kWidth = 4;
-const int BlockAnalyzer::kMinColumns = 32;   // arbitrary
+constexpr int kMinRows = 3;       // arbitrary
-const int BlockAnalyzer::kMaxColumns = 256;  // must be 2**n
+constexpr int kMinColumns = 32;   // arbitrary
-const int BlockAnalyzer::kFadeSize = 90;
+constexpr int kMaxColumns = 256;  // must be 2**n
+constexpr int kFadeSize = 90;
+}  // namespace
 
 const char *BlockAnalyzer::kName = QT_TRANSLATE_NOOP("AnalyzerContainer", "Block analyzer");
 
@@ -165,11 +167,12 @@ void BlockAnalyzer::analyze(QPainter &p, const Scope &s, const bool new_frame) {
 
   for (int x = 0, y = 0; x < static_cast<int>(scope_.size()); ++x) {
     // determine y
-    for (y = 0; scope_[x] < yscale_[y]; ++y);
+    for (y = 0; scope_[x] < yscale_.at(y); ++y);
 
     // This is opposite to what you'd think, higher than y means the bar is lower than y (physically)
-    if (static_cast<double>(y) > store_[x]) {
+    if (static_cast<double>(y) > store_.at(x)) {
-      y = static_cast<int>(store_[x] += step_);
+      store_[x] += step_;
+      y = static_cast<int>(store_.value(x));
     }
     else {
       store_[x] = y;
@@ -177,18 +180,19 @@ void BlockAnalyzer::analyze(QPainter &p, const Scope &s, const bool new_frame) {
 
     // If y is lower than fade_pos_, then the bar has exceeded the height of the fadeout
     // if the fadeout is quite faded now, then display the new one
-    if (y <= fade_pos_[x] /*|| fade_intensity_[x] < kFadeSize / 3*/) {
+    if (y <= fade_pos_.at(x) /*|| fade_intensity_[x] < kFadeSize / 3*/) {
       fade_pos_[x] = y;
       fade_intensity_[x] = kFadeSize;
     }
 
-    if (fade_intensity_[x] > 0) {
+    if (fade_intensity_.at(x) > 0) {
-      const int offset = --fade_intensity_[x];
+      --fade_intensity_[x];
-      const int y2 = y_ + (fade_pos_[x] * (kHeight + 1));
+      const int offset = fade_intensity_.value(x);
+      const int y2 = y_ + (fade_pos_.value(x) * (kHeight + 1));
       canvas_painter.drawPixmap(x * (kWidth + 1), y2, fade_bars_[offset], 0, 0, kWidth, height() - y2);
     }
 
-    if (fade_intensity_[x] == 0) fade_pos_[x] = rows_;
+    if (fade_intensity_.at(x) == 0) fade_pos_[x] = rows_;
 
     // REMEMBER: y is a number from 0 to rows_, 0 means all blocks are glowing, rows_ means none are
     canvas_painter.drawPixmap(x * (kWidth + 1), y * (kHeight + 1) + y_, *bar(), 0, y * (kHeight + 1), bar()->width(), bar()->height());

src/analyzer/blockanalyzer.h

@@ -43,13 +43,6 @@ class BlockAnalyzer : public AnalyzerBase {
  public:
   Q_INVOKABLE explicit BlockAnalyzer(QWidget*);
 
-  static const int kHeight;
-  static const int kWidth;
-  static const int kMinRows;
-  static const int kMinColumns;
-  static const int kMaxColumns;
-  static const int kFadeSize;
-
   static const char *kName;
 
  protected:

src/analyzer/boomanalyzer.h

@@ -47,7 +47,7 @@ class BoomAnalyzer : public AnalyzerBase {
   void transform(Scope &s) override;
   void analyze(QPainter &p, const Scope &scope, const bool new_frame) override;
 
- public slots:
+ public Q_SLOTS:
   void changeK_barHeight(int);
   void changeF_peakSpeed(int);
 

src/collection/collection.cpp

@@ -63,6 +63,8 @@ SCollection::SCollection(Application *app, QObject *parent)
       save_playcounts_to_files_(false),
       save_ratings_to_files_(false) {
 
+  setObjectName(QLatin1String(metaObject()->className()));
+
   original_thread_ = thread();
 
   backend_ = make_shared<CollectionBackend>();
@@ -80,7 +82,7 @@ SCollection::SCollection(Application *app, QObject *parent)
 SCollection::~SCollection() {
 
   if (watcher_) {
-    watcher_->Stop();
+    watcher_->Abort();
     watcher_->deleteLater();
   }
   if (watcher_thread_) {
@@ -94,6 +96,7 @@ void SCollection::Init() {
 
   watcher_ = new CollectionWatcher(Song::Source::Collection);
   watcher_thread_ = new Thread(this);
+  watcher_thread_->setObjectName(watcher_->objectName());
 
   watcher_thread_->SetIoPriority(Utilities::IoPriority::IOPRIO_CLASS_IDLE);
 
@@ -151,7 +154,7 @@ void SCollection::ExitReceived() {
   QObject::disconnect(obj, nullptr, this, nullptr);
   qLog(Debug) << obj << "successfully exited.";
   wait_for_exit_.removeAll(obj);
-  if (wait_for_exit_.isEmpty()) emit ExitFinished();
+  if (wait_for_exit_.isEmpty()) Q_EMIT ExitFinished();
 
 }
 
@@ -159,7 +162,7 @@ void SCollection::IncrementalScan() { watcher_->IncrementalScanAsync(); }
 
 void SCollection::FullScan() { watcher_->FullScanAsync(); }
 
-void SCollection::AbortScan() { watcher_->Stop(); }
+void SCollection::StopScan() { watcher_->Stop(); }
 
 void SCollection::Rescan(const SongList &songs) {
 

src/collection/collection.h

@@ -64,24 +64,24 @@ class SCollection : public QObject {
  private:
   void SyncPlaycountAndRatingToFiles();
 
- public slots:
+ public Q_SLOTS:
   void ReloadSettings();
 
   void PauseWatcher();
   void ResumeWatcher();
 
   void FullScan();
-  void AbortScan();
+  void StopScan();
   void Rescan(const SongList &songs);
 
   void IncrementalScan();
 
- private slots:
+ private Q_SLOTS:
   void ExitReceived();
   void SongsPlaycountChanged(const SongList &songs, const bool save_tags = false);
   void SongsRatingChanged(const SongList &songs, const bool save_tags = false);
 
- signals:
+ Q_SIGNALS:
   void Error(const QString &error);
   void ExitFinished();
 

src/collection/collectionbackend.cpp

@@ -72,17 +72,21 @@ CollectionBackend::CollectionBackend(QObject *parent)
 
 CollectionBackend::~CollectionBackend() {
 
-  qLog(Debug) << "Collection backend" << this << "for" << Song::TextForSource(source_) << "deleted";
+  qLog(Debug) << "Collection backend" << this << "deleted";
 
 }
 
 void CollectionBackend::Init(SharedPtr<Database> db, SharedPtr<TaskManager> task_manager, const Song::Source source, const QString &songs_table, const QString &dirs_table, const QString &subdirs_table) {
+
+  setObjectName(source == Song::Source::Collection ? QLatin1String(metaObject()->className()) : QStringLiteral("%1%2").arg(Song::DescriptionForSource(source), QLatin1String(metaObject()->className())));
+
   db_ = db;
   task_manager_ = task_manager;
   source_ = source;
   songs_table_ = songs_table;
   dirs_table_ = dirs_table;
   subdirs_table_ = subdirs_table;
+
 }
 
 void CollectionBackend::Close() {
@@ -103,7 +107,7 @@ void CollectionBackend::Exit() {
   Q_ASSERT(QThread::currentThread() == thread());
 
   moveToThread(original_thread_);
-  emit ExitFinished();
+  Q_EMIT ExitFinished();
 
 }
 
@@ -114,8 +118,8 @@ void CollectionBackend::ReportErrors(const CollectionQuery &query) {
     qLog(Error) << "Unable to execute collection SQL query:" << sql_error;
     qLog(Error) << "Failed SQL query:" << query.lastQuery();
     qLog(Error) << "Bound SQL values:" << query.boundValues();
-    emit Error(tr("Unable to execute collection SQL query: %1").arg(sql_error.text()));
+    Q_EMIT Error(tr("Unable to execute collection SQL query: %1").arg(sql_error.text()));
-    emit Error(tr("Failed SQL query: %1").arg(query.lastQuery()));
+    Q_EMIT Error(tr("Failed SQL query: %1").arg(query.lastQuery()));
   }
 
 }
@@ -134,7 +138,7 @@ void CollectionBackend::GetAllSongs(const int id) {
   q.prepare(QStringLiteral("SELECT %1 FROM %2").arg(Song::kRowIdColumnSpec, songs_table_));
   if (!q.exec()) {
     db_->ReportErrors(q);
-    emit GotSongs(SongList(), id);
+    Q_EMIT GotSongs(SongList(), id);
     return;
   }
 
@@ -145,7 +149,7 @@ void CollectionBackend::GetAllSongs(const int id) {
     songs << song;
   }
 
-  emit GotSongs(songs, id);
+  Q_EMIT GotSongs(songs, id);
 
 }
 
@@ -189,7 +193,7 @@ void CollectionBackend::LoadDirectories() {
   QSqlDatabase db(db_->Connect());
 
   for (const CollectionDirectory &dir : dirs) {
-    emit DirectoryAdded(dir, SubdirsInDirectory(dir.id, db));
+    Q_EMIT DirectoryAdded(dir, SubdirsInDirectory(dir.id, db));
   }
 
 }
@@ -317,7 +321,7 @@ void CollectionBackend::UpdateTotalSongCount() {
     return;
   }
 
-  emit TotalSongCountUpdated(q.value(0).toInt());
+  Q_EMIT TotalSongCountUpdated(q.value(0).toInt());
 
 }
 
@@ -337,7 +341,7 @@ void CollectionBackend::UpdateTotalArtistCount() {
     return;
   }
 
-  emit TotalArtistCountUpdated(q.value(0).toInt());
+  Q_EMIT TotalArtistCountUpdated(q.value(0).toInt());
 
 }
 
@@ -357,7 +361,7 @@ void CollectionBackend::UpdateTotalAlbumCount() {
     return;
   }
 
-  emit TotalAlbumCountUpdated(q.value(0).toInt());
+  Q_EMIT TotalAlbumCountUpdated(q.value(0).toInt());
 
 }
 
@@ -395,7 +399,7 @@ void CollectionBackend::AddDirectory(const QString &path) {
   dir.path = path;
   dir.id = q.lastInsertId().toInt();
 
-  emit DirectoryAdded(dir, CollectionSubdirectoryList());
+  Q_EMIT DirectoryAdded(dir, CollectionSubdirectoryList());
 
 }
 
@@ -437,7 +441,7 @@ void CollectionBackend::RemoveDirectory(const CollectionDirectory &dir) {
 
   transaction.Commit();
 
-  emit DirectoryDeleted(dir);
+  Q_EMIT DirectoryDeleted(dir);
 
 }
 
@@ -717,8 +721,8 @@ void CollectionBackend::AddOrUpdateSongs(const SongList &songs) {
 
   transaction.Commit();
 
-  if (!added_songs.isEmpty()) emit SongsAdded(added_songs);
+  if (!added_songs.isEmpty()) Q_EMIT SongsAdded(added_songs);
-  if (!changed_songs.isEmpty()) emit SongsChanged(changed_songs);
+  if (!changed_songs.isEmpty()) Q_EMIT SongsChanged(changed_songs);
 
   UpdateTotalSongCountAsync();
   UpdateTotalArtistCountAsync();
@@ -819,9 +823,9 @@ void CollectionBackend::UpdateSongsBySongID(const SongMap &new_songs) {
 
   transaction.Commit();
 
-  if (!deleted_songs.isEmpty()) emit SongsDeleted(deleted_songs);
+  if (!deleted_songs.isEmpty()) Q_EMIT SongsDeleted(deleted_songs);
-  if (!added_songs.isEmpty()) emit SongsAdded(added_songs);
+  if (!added_songs.isEmpty()) Q_EMIT SongsAdded(added_songs);
-  if (!changed_songs.isEmpty()) emit SongsChanged(changed_songs);
+  if (!changed_songs.isEmpty()) Q_EMIT SongsChanged(changed_songs);
 
   UpdateTotalSongCountAsync();
   UpdateTotalArtistCountAsync();
@@ -867,7 +871,7 @@ void CollectionBackend::DeleteSongs(const SongList &songs) {
 
   transaction.Commit();
 
-  emit SongsDeleted(songs);
+  Q_EMIT SongsDeleted(songs);
 
   UpdateTotalSongCountAsync();
   UpdateTotalArtistCountAsync();
@@ -894,10 +898,10 @@ void CollectionBackend::MarkSongsUnavailable(const SongList &songs, const bool u
   transaction.Commit();
 
   if (unavailable) {
-    emit SongsDeleted(songs);
+    Q_EMIT SongsDeleted(songs);
   }
   else {
-    emit SongsAdded(songs);
+    Q_EMIT SongsAdded(songs);
   }
 
   UpdateTotalSongCountAsync();
@@ -1410,7 +1414,7 @@ void CollectionBackend::CompilationsNeedUpdating() {
   transaction.Commit();
 
   if (!changed_songs.isEmpty()) {
-    emit SongsChanged(changed_songs);
+    Q_EMIT SongsChanged(changed_songs);
   }
 
 }
@@ -1497,7 +1501,8 @@ CollectionBackend::AlbumList CollectionBackend::GetAlbums(const QString &artist,
     album_info.art_embedded = query.Value(6).toBool();
 
     const QString art_automatic = query.Value(7).toString();
-    if (art_automatic.contains(QRegularExpression(QStringLiteral("..+:.*")))) {
+    static const QRegularExpression regex_url_schema(QStringLiteral("..+:.*"));
+    if (art_automatic.contains(regex_url_schema)) {
       album_info.art_automatic = QUrl::fromEncoded(art_automatic.toUtf8());
     }
     else {
@@ -1505,7 +1510,7 @@ CollectionBackend::AlbumList CollectionBackend::GetAlbums(const QString &artist,
     }
 
     const QString art_manual = query.Value(8).toString();
-    if (art_manual.contains(QRegularExpression(QStringLiteral("..+:.*")))) {
+    if (art_manual.contains(regex_url_schema)) {
       album_info.art_manual = QUrl::fromEncoded(art_manual.toUtf8());
     }
     else {
@@ -1616,7 +1621,7 @@ void CollectionBackend::UpdateEmbeddedAlbumArt(const QString &effective_albumart
   }
 
   if (!songs.isEmpty()) {
-    emit SongsChanged(songs);
+    Q_EMIT SongsChanged(songs);
   }
 
 }
@@ -1662,7 +1667,7 @@ void CollectionBackend::UpdateManualAlbumArt(const QString &effective_albumartis
   }
 
   if (!songs.isEmpty()) {
-    emit SongsChanged(songs);
+    Q_EMIT SongsChanged(songs);
   }
 
 }
@@ -1707,7 +1712,7 @@ void CollectionBackend::UnsetAlbumArt(const QString &effective_albumartist, cons
   }
 
   if (!songs.isEmpty()) {
-    emit SongsChanged(songs);
+    Q_EMIT SongsChanged(songs);
   }
 
 }
@@ -1753,7 +1758,7 @@ void CollectionBackend::ClearAlbumArt(const QString &effective_albumartist, cons
   }
 
   if (!songs.isEmpty()) {
-    emit SongsChanged(songs);
+    Q_EMIT SongsChanged(songs);
   }
 
 }
@@ -1802,7 +1807,7 @@ void CollectionBackend::ForceCompilation(const QString &album, const QStringList
   }
 
   if (!songs.isEmpty()) {
-    emit SongsChanged(songs);
+    Q_EMIT SongsChanged(songs);
   }
 
 }
@@ -1824,7 +1829,7 @@ void CollectionBackend::IncrementPlayCount(const int id) {
   }
 
   Song new_song = GetSongById(id, db);
-  emit SongsStatisticsChanged(SongList() << new_song);
+  Q_EMIT SongsStatisticsChanged(SongList() << new_song);
 
 }
 
@@ -1846,7 +1851,7 @@ void CollectionBackend::IncrementSkipCount(const int id, const float progress) {
   }
 
   Song new_song = GetSongById(id, db);
-  emit SongsStatisticsChanged(SongList() << new_song);
+  Q_EMIT SongsStatisticsChanged(SongList() << new_song);
 
 }
 
@@ -1871,7 +1876,7 @@ void CollectionBackend::ResetPlayStatistics(const QList<int> &id_list, const boo
   const bool success = ResetPlayStatistics(id_str_list);
   if (success) {
     const SongList songs = GetSongsById(id_list);
-    emit SongsStatisticsChanged(songs, save_tags);
+    Q_EMIT SongsStatisticsChanged(songs, save_tags);
   }
 
 }
@@ -1920,7 +1925,7 @@ void CollectionBackend::DeleteAll() {
     t.Commit();
   }
 
-  emit DatabaseReset();
+  Q_EMIT DatabaseReset();
 
 }
 
@@ -2013,7 +2018,7 @@ void CollectionBackend::UpdateLastPlayed(const QString &artist, const QString &a
     }
   }
 
-  emit SongsStatisticsChanged(SongList() << songs);
+  Q_EMIT SongsStatisticsChanged(SongList() << songs);
 
 }
 
@@ -2039,7 +2044,7 @@ void CollectionBackend::UpdatePlayCount(const QString &artist, const QString &ti
     }
   }
 
-  emit SongsStatisticsChanged(SongList() << songs, save_tags);
+  Q_EMIT SongsStatisticsChanged(SongList() << songs, save_tags);
 
 }
 
@@ -2074,7 +2079,7 @@ void CollectionBackend::UpdateSongsRating(const QList<int> &id_list, const float
 
   SongList new_song_list = GetSongsById(id_str_list, db);
 
-  emit SongsRatingChanged(new_song_list, save_tags);
+  Q_EMIT SongsRatingChanged(new_song_list, save_tags);
 
 }
 

src/collection/collectionbackend.h

@@ -236,7 +236,7 @@ class CollectionBackend : public CollectionBackendInterface {
   void UpdateSongRatingAsync(const int id, const float rating, const bool save_tags = false);
   void UpdateSongsRatingAsync(const QList<int> &ids, const float rating, const bool save_tags = false);
 
- public slots:
+ public Q_SLOTS:
   void Exit();
   void GetAllSongs(const int id);
   void LoadDirectories();
@@ -275,7 +275,7 @@ class CollectionBackend : public CollectionBackendInterface {
   void UpdateLastSeen(const int directory_id, const int expire_unavailable_songs_days);
   void ExpireSongs(const int directory_id, const int expire_unavailable_songs_days);
 
- signals:
+ Q_SIGNALS:
   void DirectoryAdded(const CollectionDirectory &dir, const CollectionSubdirectoryList &subdir);
   void DirectoryDeleted(const CollectionDirectory &dir);
 

src/collection/collectiondirectorymodel.h

@@ -54,7 +54,7 @@ class CollectionDirectoryModel : public QStandardItemModel {
   QMap<int, CollectionDirectory> directories() const { return directories_; }
   QStringList paths() const { return paths_; }
 
- private slots:
+ private Q_SLOTS:
   void AddDirectory(const CollectionDirectory &directory);
   void RemoveDirectory(const CollectionDirectory &directory);
 

src/collection/collectionfilter.cpp

@@ -61,9 +61,9 @@ bool CollectionFilter::filterAcceptsRow(const int source_row, const QModelIndex
   }
 
 #if QT_VERSION >= QT_VERSION_CHECK(6, 0, 0)
-  const size_t hash = qHash(filter_string_);
+  size_t hash = qHash(filter_string_);
 #else
-  const uint hash = qHash(filter_string_);
+  uint hash = qHash(filter_string_);
 #endif
   if (hash != query_hash_) {
     FilterParser p(filter_string_);

src/collection/collectionfilterwidget.cpp

@@ -57,10 +57,14 @@
 #include "collectionfilterwidget.h"
 #include "groupbydialog.h"
 #include "ui_collectionfilterwidget.h"
-#include "widgets/qsearchfield.h"
+#include "widgets/searchfield.h"
 #include "settings/collectionsettingspage.h"
 #include "settings/appearancesettingspage.h"
 
+namespace {
+constexpr int kFilterDelay = 500;  // msec
+}
+
 CollectionFilterWidget::CollectionFilterWidget(QWidget *parent)
     : QWidget(parent),
       ui_(new Ui_CollectionFilterWidget),
@@ -80,7 +84,7 @@ CollectionFilterWidget::CollectionFilterWidget(QWidget *parent)
 
   ui_->search_field->setToolTip(FilterParser::ToolTip());
 
-  QObject::connect(ui_->search_field, &QSearchField::returnPressed, this, &CollectionFilterWidget::ReturnPressed);
+  QObject::connect(ui_->search_field, &SearchField::returnPressed, this, &CollectionFilterWidget::ReturnPressed);
   QObject::connect(timer_filter_delay_, &QTimer::timeout, this, &CollectionFilterWidget::FilterDelayTimeout);
 
   timer_filter_delay_->setInterval(kFilterDelay);
@@ -123,7 +127,7 @@ CollectionFilterWidget::CollectionFilterWidget(QWidget *parent)
   collection_menu_->addSeparator();
   ui_->options->setMenu(collection_menu_);
 
-  QObject::connect(ui_->search_field, &QSearchField::textChanged, this, &CollectionFilterWidget::FilterTextChanged);
+  QObject::connect(ui_->search_field, &SearchField::textChanged, this, &CollectionFilterWidget::FilterTextChanged);
   QObject::connect(ui_->options, &QToolButton::clicked, ui_->options, &QToolButton::showMenu);
 
   ReloadSettings();
@@ -154,7 +158,7 @@ void CollectionFilterWidget::Init(CollectionModel *model, CollectionFilter *filt
 
   const QList<QAction*> actions = filter_max_ages_.keys();
   for (QAction *action : actions) {
-    int filter_max_age = filter_max_ages_[action];
+    const int filter_max_age = filter_max_ages_.value(action);
     QObject::connect(action, &QAction::triggered, this, [this, filter_max_age]() { model_->SetFilterMaxAge(filter_max_age); } );
   }
 
@@ -475,12 +479,12 @@ void CollectionFilterWidget::keyReleaseEvent(QKeyEvent *e) {
 
   switch (e->key()) {
     case Qt::Key_Up:
-      emit UpPressed();
+      Q_EMIT UpPressed();
       e->accept();
       break;
 
     case Qt::Key_Down:
-      emit DownPressed();
+      Q_EMIT DownPressed();
       e->accept();
       break;
 

src/collection/collectionfilterwidget.h

@@ -51,8 +51,6 @@ class CollectionFilterWidget : public QWidget {
   explicit CollectionFilterWidget(QWidget *parent = nullptr);
   ~CollectionFilterWidget() override;
 
-  static const int kFilterDelay = 500;  // msec
-
   enum class DelayBehaviour {
     AlwaysInstant,
     DelayedOnLargeLibraries,
@@ -88,12 +86,12 @@ class CollectionFilterWidget : public QWidget {
   bool SearchFieldHasFocus() const;
   void FocusSearchField();
 
- public slots:
+ public Q_SLOTS:
   void UpdateGroupByActions();
   void SetFilterMode(CollectionFilterOptions::FilterMode filter_mode);
   void FocusOnFilter(QKeyEvent *e);
 
- signals:
+ Q_SIGNALS:
   void UpPressed();
   void DownPressed();
   void ReturnPressed();
@@ -101,7 +99,7 @@ class CollectionFilterWidget : public QWidget {
  protected:
   void keyReleaseEvent(QKeyEvent *e) override;
 
- private slots:
+ private Q_SLOTS:
   void GroupingChanged(const CollectionModel::Grouping g, const bool separate_albums_by_grouping);
   void GroupByClicked(QAction *action);
   void SaveGroupBy();

src/collection/collectionfilterwidget.ui

@@ -30,7 +30,7 @@
     <number>0</number>
    </property>
    <item>
-    <widget class="QSearchField" name="search_field" native="true">
+    <widget class="SearchField" name="search_field" native="true">
      <property name="placeholderText" stdset="0">
       <string>Enter search terms here</string>
      </property>
@@ -123,9 +123,9 @@
  </widget>
  <customwidgets>
   <customwidget>
-   <class>QSearchField</class>
+   <class>SearchField</class>
    <extends>QWidget</extends>
-   <header>widgets/qsearchfield.h</header>
+   <header>widgets/searchfield.h</header>
   </customwidget>
  </customwidgets>
  <resources/>

src/collection/collectionitemdelegate.h

@@ -40,7 +40,7 @@ class CollectionItemDelegate : public QStyledItemDelegate {
   explicit CollectionItemDelegate(QObject *parent);
   void paint(QPainter *painter, const QStyleOptionViewItem &option, const QModelIndex &idx) const override;
 
- public slots:
+ public Q_SLOTS:
   bool helpEvent(QHelpEvent *event, QAbstractItemView *view, const QStyleOptionViewItem &option, const QModelIndex &idx) override;
 };
 

src/collection/collectionmodel.cpp

@@ -24,10 +24,11 @@
 #include <algorithm>
 #include <utility>
 #include <optional>
+#include <chrono>
 
 #include <QObject>
 #include <QtGlobal>
-#include <QtConcurrent>
+#include <QtConcurrentRun>
 #include <QThread>
 #include <QMutex>
 #include <QFuture>
@@ -75,6 +76,8 @@
 #include "covermanager/albumcoverloader.h"
 #include "settings/collectionsettingspage.h"
 
+using namespace std::chrono_literals;
+
 const int CollectionModel::kPrettyCoverSize = 32;
 namespace {
 constexpr char kPixmapDiskCacheDir[] = "pixmapcache";
@@ -98,6 +101,8 @@ CollectionModel::CollectionModel(SharedPtr<CollectionBackend> backend, Applicati
       total_album_count_(0),
       loading_(false) {
 
+  setObjectName(backend_->source() == Song::Source::Collection ? QLatin1String(metaObject()->className()) : QStringLiteral("%1%2").arg(Song::DescriptionForSource(backend_->source()), QLatin1String(metaObject()->className())));
+
   filter_->setSourceModel(this);
   filter_->setSortRole(Role_SortText);
   filter_->sort(0);
@@ -133,11 +138,11 @@ CollectionModel::CollectionModel(SharedPtr<CollectionBackend> backend, Applicati
   backend_->UpdateTotalAlbumCountAsync();
 
   timer_reload_->setSingleShot(true);
-  timer_reload_->setInterval(300);
+  timer_reload_->setInterval(300ms);
   QObject::connect(timer_reload_, &QTimer::timeout, this, &CollectionModel::Reload);
 
   timer_update_->setSingleShot(false);
-  timer_update_->setInterval(20);
+  timer_update_->setInterval(20ms);
   QObject::connect(timer_update_, &QTimer::timeout, this, &CollectionModel::ProcessUpdate);
 
   ReloadSettings();
@@ -146,7 +151,7 @@ CollectionModel::CollectionModel(SharedPtr<CollectionBackend> backend, Applicati
 
 CollectionModel::~CollectionModel() {
 
-  qLog(Debug) << "Collection model" << this << "for" << Song::TextForSource(backend_->source()) << "deleted";
+  qLog(Debug) << "Collection model" << this << "deleted";
 
   beginResetModel();
   Clear();
@@ -266,7 +271,7 @@ void CollectionModel::SetGroupBy(const Grouping g, const std::optional<bool> sep
 
   ScheduleReset();
 
-  emit GroupingChanged(g, options_current_.separate_albums_by_grouping);
+  Q_EMIT GroupingChanged(g, options_current_.separate_albums_by_grouping);
 
 }
 
@@ -514,7 +519,7 @@ void CollectionModel::AddReAddOrUpdateSongsInternal(const SongList &songs) {
       songs_added << new_song;
       continue;
     }
-    const Song &old_song = song_nodes_[new_song.id()]->metadata;
+    const Song old_song = song_nodes_.value(new_song.id())->metadata;
     bool container_key_changed = false;
     bool has_unique_album_identifier_1 = false;
     bool has_unique_album_identifier_2 = false;
@@ -606,7 +611,7 @@ void CollectionModel::UpdateSongsInternal(const SongList &songs) {
       qLog(Error) << "Song does not exist in model" << new_song.id() << new_song.PrettyTitleWithArtist();
       continue;
     }
-    CollectionItem *item = song_nodes_[new_song.id()];
+    CollectionItem *item = song_nodes_.value(new_song.id());
     const Song &old_song = item->metadata;
     const bool song_title_data_changed = IsSongTitleDataChanged(old_song, new_song);
     const bool art_changed = !old_song.IsArtEqual(new_song);
@@ -622,18 +627,18 @@ void CollectionModel::UpdateSongsInternal(const SongList &songs) {
       qLog(Debug) << "Song metadata and title for" << new_song.id() << new_song.PrettyTitleWithArtist() << "changed, informing model";
       const QModelIndex idx = ItemToIndex(item);
       if (!idx.isValid()) continue;
-      emit dataChanged(idx, idx);
+      Q_EMIT dataChanged(idx, idx);
     }
     else {
       qLog(Debug) << "Song metadata for" << new_song.id() << new_song.PrettyTitleWithArtist() << "changed";
     }
   }
 
-  for (CollectionItem *item : album_parents) {
+  for (CollectionItem *item : std::as_const(album_parents)) {
     ClearItemPixmapCache(item);
     const QModelIndex idx = ItemToIndex(item);
     if (idx.isValid()) {
-      emit dataChanged(idx, idx);
+      Q_EMIT dataChanged(idx, idx);
     }
   }
 
@@ -648,7 +653,7 @@ void CollectionModel::RemoveSongsInternal(const SongList &songs) {
   for (const Song &song : songs) {
 
     if (song_nodes_.contains(song.id())) {
-      CollectionItem *node = song_nodes_[song.id()];
+      CollectionItem *node = song_nodes_.value(song.id());
 
       if (node->parent != root_) parents << node->parent;
 
@@ -706,7 +711,7 @@ void CollectionModel::RemoveSongsInternal(const SongList &songs) {
     }
 
     // Remove the divider
-    int row = divider_nodes_[divider_key]->row;
+    const int row = divider_nodes_.value(divider_key)->row;
     beginRemoveRows(ItemToIndex(root_), row, row);
     root_->Delete(row);
     endRemoveRows();
@@ -989,7 +994,7 @@ void CollectionModel::AlbumCoverLoaded(const quint64 id, const AlbumCoverLoaderR
   const QModelIndex idx = ItemToIndex(item);
   if (!idx.isValid()) return;
 
-  emit dataChanged(idx, idx);
+  Q_EMIT dataChanged(idx, idx);
 
 }
 
@@ -1163,7 +1168,8 @@ QString CollectionModel::SortText(QString text) {
   else {
     text = text.toLower();
   }
-  text = text.remove(QRegularExpression(QStringLiteral("[^\\w ]"), QRegularExpression::UseUnicodePropertiesOption));
+  static const QRegularExpression regex_not_words(QStringLiteral("[^\\w ]"), QRegularExpression::UseUnicodePropertiesOption);
+  text = text.remove(regex_not_words);
 
   return text;
 
@@ -1531,21 +1537,21 @@ CollectionModel::GroupBy &CollectionModel::Grouping::operator[](const int i) {
 void CollectionModel::TotalSongCountUpdatedSlot(const int count) {
 
   total_song_count_ = count;
-  emit TotalSongCountUpdated(count);
+  Q_EMIT TotalSongCountUpdated(count);
 
 }
 
 void CollectionModel::TotalArtistCountUpdatedSlot(const int count) {
 
   total_artist_count_ = count;
-  emit TotalArtistCountUpdated(count);
+  Q_EMIT TotalArtistCountUpdated(count);
 
 }
 
 void CollectionModel::TotalAlbumCountUpdatedSlot(const int count) {
 
   total_album_count_ = count;
-  emit TotalAlbumCountUpdated(count);
+  Q_EMIT TotalAlbumCountUpdated(count);
 
 }
 
@@ -1553,18 +1559,6 @@ void CollectionModel::ClearDiskCache() {
   if (sIconCache) sIconCache->clear();
 }
 
-void CollectionModel::ExpandAll(CollectionItem *item) const {
-
-  if (!root_) return;
-
-  if (!item) item = root_;
-
-  for (CollectionItem *child : item->children) {
-    ExpandAll(child);
-  }
-
-}
-
 void CollectionModel::RowsInserted(const QModelIndex &parent, const int first, const int last) {
 
   SongList songs;
@@ -1577,7 +1571,7 @@ void CollectionModel::RowsInserted(const QModelIndex &parent, const int first, c
   }
 
   if (!songs.isEmpty()) {
-    emit SongsAdded(songs);
+    Q_EMIT SongsAdded(songs);
   }
 
 }
@@ -1593,7 +1587,7 @@ void CollectionModel::RowsRemoved(const QModelIndex &parent, const int first, co
     songs << item->metadata;
   }
 
-  emit SongsRemoved(songs);
+  Q_EMIT SongsRemoved(songs);
 
 }
 

src/collection/collectionmodel.h

@@ -199,11 +199,9 @@ class CollectionModel : public SimpleTreeModel<CollectionItem> {
   SongList GetChildSongs(const QModelIndex &idx) const;
   SongList GetChildSongs(const QModelIndexList &indexes) const;
 
-  void ExpandAll(CollectionItem *item = nullptr) const;
-
   bool CompareItems(const CollectionItem *a, const CollectionItem *b) const;
 
- signals:
+ Q_SIGNALS:
   void TotalSongCountUpdated(const int count);
   void TotalArtistCountUpdated(const int count);
   void TotalAlbumCountUpdated(const int count);
@@ -211,7 +209,7 @@ class CollectionModel : public SimpleTreeModel<CollectionItem> {
   void SongsAdded(const SongList &songs);
   void SongsRemoved(const SongList &songs);
 
- public slots:
+ public Q_SLOTS:
   void SetFilterMode(const CollectionFilterOptions::FilterMode filter_mode);
   void SetFilterMaxAge(const int filter_max_age);
 
@@ -255,7 +253,7 @@ class CollectionModel : public SimpleTreeModel<CollectionItem> {
   void ClearItemPixmapCache(CollectionItem *item);
   static qint64 MaximumCacheSize(Settings *s, const char *size_id, const char *size_unit_id, const qint64 cache_size_default);
 
- private slots:
+ private Q_SLOTS:
   void Reload();
   void ScheduleReset();
   void ProcessUpdate();

src/collection/collectionmodelupdate.cpp

@@ -19,5 +19,5 @@
 
 #include "collectionmodelupdate.h"
 
-CollectionModelUpdate::CollectionModelUpdate(const Type &_type, const SongList &_songs)
+CollectionModelUpdate::CollectionModelUpdate(const Type _type, const SongList &_songs)
     : type(_type), songs(_songs) {}

src/collection/collectionmodelupdate.h

@@ -30,7 +30,7 @@ class CollectionModelUpdate {
     Update,
     Remove,
   };
-  explicit CollectionModelUpdate(const Type &_type, const SongList &_songs);
+  explicit CollectionModelUpdate(const Type _type, const SongList &_songs);
   Type type;
   SongList songs;
 };

src/collection/collectionquery.cpp

@@ -21,6 +21,8 @@
 
 #include "config.h"
 
+#include <utility>
+
 #include <QtGlobal>
 #include <QMetaType>
 #include <QDateTime>
@@ -44,7 +46,7 @@ CollectionQuery::CollectionQuery(const QSqlDatabase &db, const QString &songs_ta
       limit_(-1) {
 
   if (filter_options.max_age() != -1) {
-    qint64 cutoff = QDateTime::currentDateTime().toSecsSinceEpoch() - filter_options.max_age();
+    qint64 cutoff = QDateTime::currentSecsSinceEpoch() - filter_options.max_age();
 
     where_clauses_ << QStringLiteral("ctime > ?");
     bound_values_ << cutoff;
@@ -62,7 +64,7 @@ void CollectionQuery::AddWhere(const QString &column, const QVariant &value, con
 
   // Ignore 'literal' for IN
   if (op.compare(QLatin1String("IN"), Qt::CaseInsensitive) == 0) {
-    QStringList values = value.toStringList();
+    const QStringList values = value.toStringList();
     QStringList final_values;
     final_values.reserve(values.count());
     for (const QString &single_value : values) {
@@ -134,7 +136,7 @@ bool CollectionQuery::Exec() {
   if (!QSqlQuery::prepare(sql)) return false;
 
   // Bind values
-  for (const QVariant &value : bound_values_) {
+  for (const QVariant &value : std::as_const(bound_values_)) {
     QSqlQuery::addBindValue(value);
   }
 

src/collection/collectionview.cpp

@@ -104,6 +104,8 @@ CollectionView::CollectionView(QWidget *parent)
       is_in_keyboard_search_(false),
       delete_files_(false) {
 
+  setObjectName(QLatin1String(metaObject()->className()));
+
   setItemDelegate(new CollectionItemDelegate(this));
   setAttribute(Qt::WA_MacShowFocusRect, false);
   setHeaderHidden(true);
@@ -273,7 +275,7 @@ void CollectionView::TotalSongCountUpdated(const int count) {
     unsetCursor();
   }
 
-  emit TotalSongCountUpdated_();
+  Q_EMIT TotalSongCountUpdated_();
 
 }
 
@@ -290,7 +292,7 @@ void CollectionView::TotalArtistCountUpdated(const int count) {
     unsetCursor();
   }
 
-  emit TotalArtistCountUpdated_();
+  Q_EMIT TotalArtistCountUpdated_();
 
 }
 
@@ -307,7 +309,7 @@ void CollectionView::TotalAlbumCountUpdated(const int count) {
     unsetCursor();
   }
 
-  emit TotalAlbumCountUpdated_();
+  Q_EMIT TotalAlbumCountUpdated_();
 
 }
 
@@ -348,7 +350,7 @@ void CollectionView::mouseReleaseEvent(QMouseEvent *e) {
   QTreeView::mouseReleaseEvent(e);
 
   if (total_song_count_ == 0) {
-    emit ShowConfigDialog();
+    Q_EMIT ShowConfigDialog();
   }
 
 }
@@ -538,13 +540,13 @@ void CollectionView::Load() {
   if (MimeData *mimedata = qobject_cast<MimeData*>(q_mimedata)) {
     mimedata->clear_first_ = true;
   }
-  emit AddToPlaylistSignal(q_mimedata);
+  Q_EMIT AddToPlaylistSignal(q_mimedata);
 
 }
 
 void CollectionView::AddToPlaylist() {
 
-  emit AddToPlaylistSignal(model()->mimeData(selectedIndexes()));
+  Q_EMIT AddToPlaylistSignal(model()->mimeData(selectedIndexes()));
 
 }
 
@@ -554,7 +556,7 @@ void CollectionView::AddToPlaylistEnqueue() {
   if (MimeData *mimedata = qobject_cast<MimeData*>(q_mimedata)) {
     mimedata->enqueue_now_ = true;
   }
-  emit AddToPlaylistSignal(q_mimedata);
+  Q_EMIT AddToPlaylistSignal(q_mimedata);
 
 }
 
@@ -564,7 +566,7 @@ void CollectionView::AddToPlaylistEnqueueNext() {
   if (MimeData *mimedata = qobject_cast<MimeData*>(q_mimedata)) {
     mimedata->enqueue_next_now_ = true;
   }
-  emit AddToPlaylistSignal(q_mimedata);
+  Q_EMIT AddToPlaylistSignal(q_mimedata);
 
 }
 
@@ -574,13 +576,13 @@ void CollectionView::OpenInNewPlaylist() {
   if (MimeData *mimedata = qobject_cast<MimeData*>(q_mimedata)) {
     mimedata->open_in_new_playlist_ = true;
   }
-  emit AddToPlaylistSignal(q_mimedata);
+  Q_EMIT AddToPlaylistSignal(q_mimedata);
 
 }
 
 void CollectionView::SearchForThis() {
 
-  QModelIndex current = currentIndex();
+  const QModelIndex current = currentIndex();
   const QVariant role_type = model()->data(current, CollectionModel::Role_Type);
   if (!role_type.isValid()) {
     return;
@@ -599,7 +601,7 @@ void CollectionView::SearchForThis() {
       if (!songs.isEmpty()) {
         last_selected_song_ = songs.last();
       }
-      search = QStringLiteral("title:%1").arg(last_selected_song_.title());
+      search = QStringLiteral("title:\"%1\"").arg(last_selected_song_.title());
       break;
     }
 
@@ -609,28 +611,29 @@ void CollectionView::SearchForThis() {
 
     case CollectionItem::Type::Container:{
       CollectionItem *item = app_->collection_model()->IndexToItem(index);
+      const CollectionModel::GroupBy group_by = app_->collection_model()->GetGroupBy()[item->container_level];
+      while (!item->children.isEmpty()) {
+        item = item->children.constFirst();
+      }
 
-      int container_level = item->container_level;
+      switch (group_by) {
-      CollectionModel::GroupBy container_group_by = app_->collection_model()->GetGroupBy()[container_level];
-
-      switch (container_group_by) {
         case CollectionModel::GroupBy::AlbumArtist:
-          search = QStringLiteral("albumartist:%1").arg(item->metadata.effective_albumartist());
+          search = QStringLiteral("albumartist:\"%1\"").arg(item->metadata.effective_albumartist());
           break;
         case CollectionModel::GroupBy::Artist:
-          search = QStringLiteral("artist:%1").arg(item->metadata.artist());
+          search = QStringLiteral("artist:\"%1\"").arg(item->metadata.artist());
           break;
         case CollectionModel::GroupBy::Album:
         case CollectionModel::GroupBy::AlbumDisc:
-          search = QStringLiteral("album:%1").arg(item->metadata.album());
+          search = QStringLiteral("album:\"%1\"").arg(item->metadata.album());
           break;
         case CollectionModel::GroupBy::YearAlbum:
         case CollectionModel::GroupBy::YearAlbumDisc:
-          search = QStringLiteral("year:%1 album:%2").arg(item->metadata.year()).arg(item->metadata.album());
+          search = QStringLiteral("year:%1 album:\"%2\"").arg(item->metadata.year()).arg(item->metadata.album());
           break;
         case CollectionModel::GroupBy::OriginalYearAlbum:
         case CollectionModel::GroupBy::OriginalYearAlbumDisc:
-          search = QStringLiteral("year:%1 album:%2").arg(item->metadata.effective_originalyear()).arg(item->metadata.album());
+          search = QStringLiteral("year:%1 album:\"%2\"").arg(item->metadata.effective_originalyear()).arg(item->metadata.album());
           break;
         case CollectionModel::GroupBy::Year:
           search = QStringLiteral("year:%1").arg(item->metadata.year());
@@ -639,16 +642,16 @@ void CollectionView::SearchForThis() {
           search = QStringLiteral("year:%1").arg(item->metadata.effective_originalyear());
           break;
         case CollectionModel::GroupBy::Genre:
-          search = QStringLiteral("genre:%1").arg(item->metadata.genre());
+          search = QStringLiteral("genre:\"%1\"").arg(item->metadata.genre());
           break;
         case CollectionModel::GroupBy::Composer:
-          search = QStringLiteral("composer:%1").arg(item->metadata.composer());
+          search = QStringLiteral("composer:\"%1\"").arg(item->metadata.composer());
           break;
         case CollectionModel::GroupBy::Performer:
-          search = QStringLiteral("performer:%1").arg(item->metadata.performer());
+          search = QStringLiteral("performer:\"%1\"").arg(item->metadata.performer());
           break;
         case CollectionModel::GroupBy::Grouping:
-          search = QStringLiteral("grouping:%1").arg(item->metadata.grouping());
+          search = QStringLiteral("grouping:\"%1\"").arg(item->metadata.grouping());
           break;
         case CollectionModel::GroupBy::Samplerate:
           search = QStringLiteral("samplerate:%1").arg(item->metadata.samplerate());
@@ -730,7 +733,7 @@ void CollectionView::EditTracks() {
 }
 
 void CollectionView::EditTagError(const QString &message) {
-  emit Error(message);
+  Q_EMIT Error(message);
 }
 
 void CollectionView::RescanSongs() {
@@ -772,7 +775,7 @@ void CollectionView::FilterReturnPressed() {
 
   if (!currentIndex().isValid()) return;
 
-  emit doubleClicked(currentIndex());
+  Q_EMIT doubleClicked(currentIndex());
 }
 
 void CollectionView::ShowInBrowser() const {

src/collection/collectionview.h

@@ -69,7 +69,7 @@ class CollectionView : public AutoExpandingTreeView {
   int TotalArtists() const;
   int TotalAlbums() const;
 
- public slots:
+ public Q_SLOTS:
   void TotalSongCountUpdated(const int count);
   void TotalArtistCountUpdated(const int count);
   void TotalAlbumCountUpdated(const int count);
@@ -82,7 +82,7 @@ class CollectionView : public AutoExpandingTreeView {
 
   void EditTagError(const QString &message);
 
- signals:
+ Q_SIGNALS:
   void ShowConfigDialog();
 
   void TotalSongCountUpdated_();
@@ -97,7 +97,7 @@ class CollectionView : public AutoExpandingTreeView {
   void mouseReleaseEvent(QMouseEvent *e) override;
   void contextMenuEvent(QContextMenuEvent *e) override;
 
- private slots:
+ private Q_SLOTS:
   void Load();
   void AddToPlaylist();
   void AddToPlaylistEnqueue();

src/collection/collectionwatcher.cpp

@@ -42,6 +42,7 @@
 #include <QStringList>
 #include <QUrl>
 #include <QImage>
+#include <QMutexLocker>
 #include <QSettings>
 
 #include "core/filesystemwatcherinterface.h"
@@ -72,7 +73,6 @@
 using namespace std::chrono_literals;
 
 QStringList CollectionWatcher::sValidImages = QStringList() << QStringLiteral("jpg") << QStringLiteral("png") << QStringLiteral("gif") << QStringLiteral("jpeg");
-QStringList CollectionWatcher::kIgnoredExtensions = QStringList() << QStringLiteral("tmp") << QStringLiteral("tar") << QStringLiteral("gz") << QStringLiteral("bz2") << QStringLiteral("xz") << QStringLiteral("tbz") << QStringLiteral("tgz") << QStringLiteral("z") << QStringLiteral("zip") << QStringLiteral("rar");
 
 CollectionWatcher::CollectionWatcher(Song::Source source, QObject *parent)
     : QObject(parent),
@@ -98,6 +98,8 @@ CollectionWatcher::CollectionWatcher(Song::Source source, QObject *parent)
       cue_parser_(new CueParser(backend_, this)),
       last_scan_time_(0) {
 
+  setObjectName(source_ == Song::Source::Collection ? QLatin1String(metaObject()->className()) : QStringLiteral("%1%2").arg(Song::DescriptionForSource(source_), QLatin1String(metaObject()->className())));
+
   original_thread_ = thread();
 
   rescan_timer_->setInterval(2s);
@@ -135,10 +137,51 @@ void CollectionWatcher::Exit() {
 
   Q_ASSERT(QThread::currentThread() == thread());
 
-  Stop();
+  Abort();
   if (backend_) backend_->Close();
   moveToThread(original_thread_);
-  emit ExitFinished();
+  Q_EMIT ExitFinished();
+
+}
+
+void CollectionWatcher::Stop() {
+
+  QMutexLocker l(&mutex_stop_);
+  stop_requested_ = true;
+
+}
+
+void CollectionWatcher::CancelStop() {
+
+  QMutexLocker l(&mutex_stop_);
+  stop_requested_ = false;
+
+}
+
+bool CollectionWatcher::stop_requested() const {
+
+  QMutexLocker l(&mutex_stop_);
+  return stop_requested_;
+
+}
+
+void CollectionWatcher::Abort() {
+
+  QMutexLocker l(&mutex_abort_);
+  abort_requested_ = true;
+
+}
+
+bool CollectionWatcher::abort_requested() const {
+
+  QMutexLocker l(&mutex_abort_);
+  return abort_requested_;
+
+}
+
+bool CollectionWatcher::stop_or_abort_requested() const {
+
+  return stop_requested() || abort_requested();
 
 }
 
@@ -223,14 +266,14 @@ CollectionWatcher::ScanTransaction::ScanTransaction(CollectionWatcher *watcher,
   }
 
   task_id_ = watcher_->task_manager_->StartTask(description);
-  emit watcher_->ScanStarted(task_id_);
+  Q_EMIT watcher_->ScanStarted(task_id_);
 
 }
 
 CollectionWatcher::ScanTransaction::~ScanTransaction() {
 
   // If we're stopping then don't commit the transaction
-  if (!watcher_->stop_requested_ && !watcher_->abort_requested_) {
+  if (!watcher_->stop_or_abort_requested()) {
     CommitNewOrUpdatedSongs();
   }
 
@@ -256,35 +299,35 @@ void CollectionWatcher::ScanTransaction::CommitNewOrUpdatedSongs() {
 
   if (!deleted_songs.isEmpty()) {
     if (mark_songs_unavailable_ && watcher_->source() == Song::Source::Collection) {
-      emit watcher_->SongsUnavailable(deleted_songs);
+      Q_EMIT watcher_->SongsUnavailable(deleted_songs);
     }
     else {
-      emit watcher_->SongsDeleted(deleted_songs);
+      Q_EMIT watcher_->SongsDeleted(deleted_songs);
     }
     deleted_songs.clear();
   }
 
   if (!new_songs.isEmpty()) {
-    emit watcher_->NewOrUpdatedSongs(new_songs);
+    Q_EMIT watcher_->NewOrUpdatedSongs(new_songs);
     new_songs.clear();
   }
 
   if (!touched_songs.isEmpty()) {
-    emit watcher_->SongsMTimeUpdated(touched_songs);
+    Q_EMIT watcher_->SongsMTimeUpdated(touched_songs);
     touched_songs.clear();
   }
 
   if (!readded_songs.isEmpty()) {
-    emit watcher_->SongsReadded(readded_songs);
+    Q_EMIT watcher_->SongsReadded(readded_songs);
     readded_songs.clear();
   }
 
   if (!new_subdirs.isEmpty()) {
-    emit watcher_->SubdirsDiscovered(new_subdirs);
+    Q_EMIT watcher_->SubdirsDiscovered(new_subdirs);
   }
 
   if (!touched_subdirs.isEmpty()) {
-    emit watcher_->SubdirsMTimeUpdated(touched_subdirs);
+    Q_EMIT watcher_->SubdirsMTimeUpdated(touched_subdirs);
     touched_subdirs.clear();
   }
 
@@ -306,7 +349,7 @@ void CollectionWatcher::ScanTransaction::CommitNewOrUpdatedSongs() {
   new_subdirs.clear();
 
   if (incremental_ || ignores_mtime_) {
-    emit watcher_->UpdateLastSeen(dir_, expire_unavailable_songs_days_);
+    Q_EMIT watcher_->UpdateLastSeen(dir_, expire_unavailable_songs_days_);
   }
 
 }
@@ -407,7 +450,7 @@ CollectionSubdirectoryList CollectionWatcher::ScanTransaction::GetAllSubdirs() {
 
 void CollectionWatcher::AddDirectory(const CollectionDirectory &dir, const CollectionSubdirectoryList &subdirs) {
 
-  stop_requested_ = false;
+  CancelStop();
 
   watched_dirs_[dir.id] = dir;
 
@@ -421,25 +464,29 @@ void CollectionWatcher::AddDirectory(const CollectionDirectory &dir, const Colle
     last_scan_time_ = QDateTime::currentSecsSinceEpoch();
   }
   else {
-    // We can do an incremental scan - looking at the mtimes of each subdirectory and only rescan if the directory has changed.
+    if (monitor_) {
-    ScanTransaction transaction(this, dir.id, true, false, mark_songs_unavailable_);
+      for (const CollectionSubdirectory &subdir : subdirs) {
-    QMap<QString, quint64> subdir_files_count;
+        AddWatch(dir, subdir.path);
-    const quint64 files_count = FilesCountForSubdirs(&transaction, subdirs, subdir_files_count);
+      }
-    transaction.SetKnownSubdirs(subdirs);
+    }
-    transaction.AddToProgressMax(files_count);
+    if (scan_on_startup_) {
-    for (const CollectionSubdirectory &subdir : subdirs) {
+      // We can do an incremental scan - looking at the mtimes of each subdirectory and only rescan if the directory has changed.
-      if (stop_requested_ || abort_requested_) break;
+      ScanTransaction transaction(this, dir.id, true, false, mark_songs_unavailable_);
-
+      QMap<QString, quint64> subdir_files_count;
-      if (scan_on_startup_) ScanSubdirectory(subdir.path, subdir, subdir_files_count[subdir.path], &transaction);
+      const quint64 files_count = FilesCountForSubdirs(&transaction, subdirs, subdir_files_count);
-
+      transaction.SetKnownSubdirs(subdirs);
-      if (monitor_) AddWatch(dir, subdir.path);
+      transaction.AddToProgressMax(files_count);
+      for (const CollectionSubdirectory &subdir : subdirs) {
+        if (stop_or_abort_requested()) break;
+        ScanSubdirectory(subdir.path, subdir, subdir_files_count[subdir.path], &transaction);
+      }
+      if (!stop_or_abort_requested()) {
+        last_scan_time_ = QDateTime::currentSecsSinceEpoch();
+      }
     }
-
-    last_scan_time_ = QDateTime::currentSecsSinceEpoch();
-
   }
 
-  emit CompilationsNeedUpdating();
+  Q_EMIT CompilationsNeedUpdating();
 
 }
 
@@ -493,7 +540,7 @@ void CollectionWatcher::ScanSubdirectory(const QString &path, const CollectionSu
   QDirIterator it(path, QDir::Dirs | QDir::Files | QDir::NoDotAndDotDot);
   while (it.hasNext()) {
 
-    if (stop_requested_ || abort_requested_) return;
+    if (stop_or_abort_requested()) return;
 
     QString child(it.next());
     QFileInfo child_info(child);
@@ -512,7 +559,7 @@ void CollectionWatcher::ScanSubdirectory(const QString &path, const CollectionSu
     else {
       QString ext_part(ExtensionPart(child));
       QString dir_part(DirectoryPart(child));
-      if (kIgnoredExtensions.contains(child_info.suffix(), Qt::CaseInsensitive) || child_info.baseName() == QLatin1String("qt_temp")) {
+      if (Song::kRejectedExtensions.contains(child_info.suffix(), Qt::CaseInsensitive) || child_info.baseName() == QLatin1String("qt_temp")) {
         t->AddToProgress(1);
       }
       else if (sValidImages.contains(ext_part)) {
@@ -528,7 +575,7 @@ void CollectionWatcher::ScanSubdirectory(const QString &path, const CollectionSu
     }
   }
 
-  if (stop_requested_ || abort_requested_) return;
+  if (stop_or_abort_requested()) return;
 
   // Ask the database for a list of files in this directory
   SongList songs_in_db = t->FindSongsInSubdirectory(path);
@@ -539,7 +586,7 @@ void CollectionWatcher::ScanSubdirectory(const QString &path, const CollectionSu
   QStringList files_on_disk_copy = files_on_disk;
   for (const QString &file : files_on_disk_copy) {
 
-    if (stop_requested_ || abort_requested_) return;
+    if (stop_or_abort_requested()) return;
 
     // Associated CUE
     QString new_cue = CueParser::FindCueFilename(file);
@@ -741,7 +788,7 @@ void CollectionWatcher::ScanSubdirectory(const QString &path, const CollectionSu
 
   // Recurse into the new subdirs that we found
   for (const CollectionSubdirectory &my_new_subdir : std::as_const(my_new_subdirs)) {
-    if (stop_requested_ || abort_requested_) return;
+    if (stop_or_abort_requested()) return;
     ScanSubdirectory(my_new_subdir.path, my_new_subdir, 0, t, true);
   }
 
@@ -797,6 +844,7 @@ void CollectionWatcher::UpdateCueAssociatedSongs(const QString &file,
       t->deleted_songs << old_cue;
     }
   }
+
 }
 
 void CollectionWatcher::UpdateNonCueAssociatedSong(const QString &file,
@@ -1008,8 +1056,8 @@ void CollectionWatcher::RemoveDirectory(const CollectionDirectory &dir) {
   watched_dirs_.remove(dir.id);
 
   // Stop watching the directory's subdirectories
-  QStringList subdir_paths = subdir_mapping_.keys(dir);
+  const QStringList subdir_paths = subdir_mapping_.keys(dir);
-  for (const QString &subdir_path : std::as_const(subdir_paths)) {
+  for (const QString &subdir_path : subdir_paths) {
     fs_watcher_->RemovePath(subdir_path);
     subdir_mapping_.remove(subdir_path);
   }
@@ -1030,8 +1078,8 @@ bool CollectionWatcher::FindSongsByPath(const SongList &songs, const QString &pa
 
 bool CollectionWatcher::FindSongsByFingerprint(const QString &file, const QString &fingerprint, SongList *out) {
 
-  SongList songs = backend_->GetSongsByFingerprint(fingerprint);
+  const SongList songs = backend_->GetSongsByFingerprint(fingerprint);
-  for (const Song &song : std::as_const(songs)) {
+  for (const Song &song : songs) {
     QString filename = song.url().toLocalFile();
     QFileInfo info(filename);
     // Allow mulitiple songs in different directories with the same fingerprint.
@@ -1081,10 +1129,10 @@ void CollectionWatcher::RescanPathsNow() {
 
   const QList<int> dirs = rescan_queue_.keys();
   for (const int dir : dirs) {
-    if (stop_requested_ || abort_requested_) break;
+    if (stop_or_abort_requested()) break;
     ScanTransaction transaction(this, dir, false, false, mark_songs_unavailable_);
 
-    const QStringList paths = rescan_queue_[dir];
+    const QStringList paths = rescan_queue_.value(dir);
 
     QMap<QString, quint64> subdir_files_count;
     for (const QString &path : paths) {
@@ -1094,7 +1142,7 @@ void CollectionWatcher::RescanPathsNow() {
     }
 
     for (const QString &path : paths) {
-      if (stop_requested_ || abort_requested_) break;
+      if (stop_or_abort_requested()) break;
       CollectionSubdirectory subdir;
       subdir.directory_id = dir;
       subdir.mtime = 0;
@@ -1105,7 +1153,7 @@ void CollectionWatcher::RescanPathsNow() {
 
   rescan_queue_.clear();
 
-  emit CompilationsNeedUpdating();
+  Q_EMIT CompilationsNeedUpdating();
 
 }
 
@@ -1139,7 +1187,7 @@ QString CollectionWatcher::PickBestArt(const QStringList &art_automatic_list) {
   QString biggest_path;
 
   for (const QString &path : std::as_const(filtered)) {
-    if (stop_requested_ || abort_requested_) break;
+    if (stop_or_abort_requested()) break;
 
     QImage image(path);
     if (image.isNull()) continue;
@@ -1215,14 +1263,14 @@ void CollectionWatcher::FullScanNow() { PerformScan(false, true); }
 
 void CollectionWatcher::PerformScan(const bool incremental, const bool ignore_mtimes) {
 
-  stop_requested_ = false;
+  CancelStop();
 
   for (const CollectionDirectory &dir : std::as_const(watched_dirs_)) {
 
-    if (stop_requested_ || abort_requested_) break;
+    if (stop_or_abort_requested()) break;
 
     ScanTransaction transaction(this, dir.id, incremental, ignore_mtimes, mark_songs_unavailable_);
-    CollectionSubdirectoryList subdirs(transaction.GetAllSubdirs());
+    CollectionSubdirectoryList subdirs = transaction.GetAllSubdirs();
 
     if (subdirs.isEmpty()) {
       qLog(Debug) << "Collection directory wasn't in subdir list.";
@@ -1237,7 +1285,7 @@ void CollectionWatcher::PerformScan(const bool incremental, const bool ignore_mt
     transaction.AddToProgressMax(files_count);
 
     for (const CollectionSubdirectory &subdir : std::as_const(subdirs)) {
-      if (stop_requested_ || abort_requested_) break;
+      if (stop_or_abort_requested()) break;
       ScanSubdirectory(subdir.path, subdir, subdir_files_count[subdir.path], &transaction);
     }
 
@@ -1245,7 +1293,7 @@ void CollectionWatcher::PerformScan(const bool incremental, const bool ignore_mt
 
   last_scan_time_ = QDateTime::currentSecsSinceEpoch();
 
-  emit CompilationsNeedUpdating();
+  Q_EMIT CompilationsNeedUpdating();
 
 }
 
@@ -1255,7 +1303,7 @@ quint64 CollectionWatcher::FilesCountForPath(ScanTransaction *t, const QString &
   QDirIterator it(path, QDir::Dirs | QDir::Files | QDir::NoDotAndDotDot);
   while (it.hasNext()) {
 
-    if (stop_requested_ || abort_requested_) break;
+    if (stop_or_abort_requested()) break;
 
     QString child = it.next();
     QFileInfo path_info(child);
@@ -1289,7 +1337,7 @@ quint64 CollectionWatcher::FilesCountForSubdirs(ScanTransaction *t, const Collec
 
   quint64 i = 0;
   for (const CollectionSubdirectory &subdir : subdirs) {
-    if (stop_requested_ || abort_requested_) break;
+    if (stop_or_abort_requested()) break;
     const quint64 files_count = FilesCountForPath(t, subdir.path);
     subdir_files_count[subdir.path] = files_count;
     i += files_count;
@@ -1307,17 +1355,17 @@ void CollectionWatcher::RescanSongsAsync(const SongList &songs) {
 
 void CollectionWatcher::RescanSongs(const SongList &songs) {
 
-  stop_requested_ = false;
+  CancelStop();
 
   QStringList scanned_paths;
   for (const Song &song : songs) {
-    if (stop_requested_ || abort_requested_) break;
+    if (stop_or_abort_requested()) break;
     const QString song_path = song.url().toLocalFile().section(QLatin1Char('/'), 0, -2);
     if (scanned_paths.contains(song_path)) continue;
     ScanTransaction transaction(this, song.directory_id(), false, true, mark_songs_unavailable_);
     const CollectionSubdirectoryList subdirs = transaction.GetAllSubdirs();
     for (const CollectionSubdirectory &subdir : subdirs) {
-      if (stop_requested_ || abort_requested_) break;
+      if (stop_or_abort_requested()) break;
       if (subdir.path != song_path) continue;
       qLog(Debug) << "Rescan for directory ID" << song.directory_id() << "directory" << subdir.path;
       quint64 files_count = FilesCountForPath(&transaction, subdir.path);
@@ -1326,6 +1374,6 @@ void CollectionWatcher::RescanSongs(const SongList &songs) {
     }
   }
 
-  emit CompilationsNeedUpdating();
+  Q_EMIT CompilationsNeedUpdating();
 
 }

src/collection/collectionwatcher.h

@@ -33,6 +33,7 @@
 #include <QString>
 #include <QStringList>
 #include <QUrl>
+#include <QMutex>
 
 #include "collectiondirectory.h"
 #include "core/shared_ptr.h"
@@ -64,14 +65,15 @@ class CollectionWatcher : public QObject {
   void SetRescanPausedAsync(const bool pause);
   void ReloadSettingsAsync();
 
-  void Stop() { stop_requested_ = true; }
+  void Stop();
-  void Abort() { abort_requested_ = true; }
+  void CancelStop();
+  void Abort();
 
   void ExitAsync();
 
   void RescanSongsAsync(const SongList &songs);
 
- signals:
+ Q_SIGNALS:
   void NewOrUpdatedSongs(const SongList &songs);
   void SongsMTimeUpdated(const SongList &songs);
   void SongsDeleted(const SongList &songs);
@@ -85,7 +87,7 @@ class CollectionWatcher : public QObject {
 
   void ScanStarted(const int task_id);
 
- public slots:
+ public Q_SLOTS:
   void AddDirectory(const CollectionDirectory &dir, const CollectionSubdirectoryList &subdirs);
   void RemoveDirectory(const CollectionDirectory &dir);
   void SetRescanPaused(bool pause);
@@ -166,7 +168,7 @@ class CollectionWatcher : public QObject {
     bool known_subdirs_dirty_;
   };
 
- private slots:
+ private Q_SLOTS:
   void ReloadSettings();
   void Exit();
   void DirectoryChanged(const QString &subdir);
@@ -178,6 +180,9 @@ class CollectionWatcher : public QObject {
   void RescanSongs(const SongList &songs);
 
  private:
+  bool stop_requested() const;
+  bool abort_requested() const;
+  bool stop_or_abort_requested() const;
   static bool FindSongsByPath(const SongList &songs, const QString &path, SongList *out);
   bool FindSongsByFingerprint(const QString &file, const QString &fingerprint, SongList *out);
   static bool FindSongsByFingerprint(const QString &file, const SongList &songs, const QString &fingerprint, SongList *out);
@@ -231,7 +236,10 @@ class CollectionWatcher : public QObject {
   bool overwrite_playcount_;
   bool overwrite_rating_;
 
+  mutable QMutex mutex_stop_;
   bool stop_requested_;
+
+  mutable QMutex mutex_abort_;
   bool abort_requested_;
 
   QMap<int, CollectionDirectory> watched_dirs_;
@@ -245,7 +253,6 @@ class CollectionWatcher : public QObject {
   CueParser *cue_parser_;
 
   static QStringList sValidImages;
-  static QStringList kIgnoredExtensions;
 
   qint64 last_scan_time_;
 

src/collection/groupbydialog.cpp

@@ -116,7 +116,7 @@ void GroupByDialog::Reset() {
 
 void GroupByDialog::accept() {
 
-  emit Accepted(CollectionModel::Grouping(
+  Q_EMIT Accepted(CollectionModel::Grouping(
       p_->mapping_.get<tag_index>().find(ui_->combobox_first->currentIndex())->group_by,
       p_->mapping_.get<tag_index>().find(ui_->combobox_second->currentIndex())->group_by,
       p_->mapping_.get<tag_index>().find(ui_->combobox_third->currentIndex())->group_by),

src/collection/groupbydialog.h

@@ -43,14 +43,14 @@ class GroupByDialog : public QDialog {
   explicit GroupByDialog(QWidget *parent = nullptr);
   ~GroupByDialog() override;
 
- public slots:
+ public Q_SLOTS:
   void CollectionGroupingChanged(const CollectionModel::Grouping g, const bool separate_albums_by_grouping);
   void accept() override;
 
- signals:
+ Q_SIGNALS:
   void Accepted(const CollectionModel::Grouping g, const bool separate_albums_by_grouping);
 
- private slots:
+ private Q_SLOTS:
   void Reset();
 
  private:

src/collection/savedgroupingmanager.cpp

@@ -207,7 +207,7 @@ void SavedGroupingManager::Remove() {
   }
   UpdateModel();
 
-  emit UpdateGroupByActions();
+  Q_EMIT UpdateGroupByActions();
 
 }
 

src/collection/savedgroupingmanager.h

@@ -51,10 +51,10 @@ class SavedGroupingManager : public QDialog {
 
   static QString GroupByToString(const CollectionModel::GroupBy g);
 
-  signals:
+ Q_SIGNALS:
-   void UpdateGroupByActions();
+  void UpdateGroupByActions();
 
- private slots:
+ private Q_SLOTS:
   void UpdateButtonState();
   void Remove();
 

src/context/contextalbum.cpp

@@ -19,6 +19,7 @@
 
 #include "config.h"
 
+#include <utility>
 #include <memory>
 
 #include <QtGlobal>
@@ -202,7 +203,7 @@ void ContextAlbum::DrawSpinner(QPainter *p) {
 
 void ContextAlbum::DrawPreviousCovers(QPainter *p) {
 
-  for (SharedPtr<PreviousCover> previous_cover : previous_covers_) {
+  for (SharedPtr<PreviousCover> previous_cover : std::as_const(previous_covers_)) {
     DrawImage(p, previous_cover->pixmap, previous_cover->opacity);
   }
 
@@ -220,7 +221,7 @@ void ContextAlbum::FadeCurrentCover(const qreal value) {
 void ContextAlbum::FadeCurrentCoverFinished() {
 
   if (image_original_ == image_strawberry_) {
-    emit FadeStopFinished();
+    Q_EMIT FadeStopFinished();
   }
 
 }
@@ -254,7 +255,7 @@ void ContextAlbum::ScaleCover() {
 
 void ContextAlbum::ScalePreviousCovers() {
 
-  for (SharedPtr<PreviousCover> previous_cover : previous_covers_) {
+  for (SharedPtr<PreviousCover> previous_cover : std::as_const(previous_covers_)) {
     QImage image = ImageUtils::ScaleImage(previous_cover->image, QSize(desired_height_, desired_height_), devicePixelRatioF(), true);
     if (image.isNull()) {
       previous_cover->pixmap = QPixmap();

src/context/contextalbum.h

@@ -78,18 +78,18 @@ class ContextAlbum : public QWidget {
   void ScaleCover();
   void ScalePreviousCovers();
 
- signals:
+ Q_SIGNALS:
   void FadeStopFinished();
 
- private slots:
+ private Q_SLOTS:
   void Update() { update(); }
   void AutomaticCoverSearchDone();
   void FadeCurrentCover(const qreal value);
   void FadeCurrentCoverFinished();
-  void FadePreviousCover(SharedPtr<PreviousCover> previous_cover);
+  void FadePreviousCover(SharedPtr<ContextAlbum::PreviousCover> previous_cover);
-  void FadePreviousCoverFinished(SharedPtr<PreviousCover> previous_cover);
+  void FadePreviousCoverFinished(SharedPtr<ContextAlbum::PreviousCover> previous_cover);
 
- public slots:
+ public Q_SLOTS:
   void SearchCoverInProgress();
 
  private:

src/context/contextview.cpp

@@ -19,6 +19,8 @@
 
 #include "config.h"
 
+#include <utility>
+
 #include <QtGlobal>
 #include <QObject>
 #include <QWidget>
@@ -65,7 +67,9 @@
 #include "contextview.h"
 #include "contextalbum.h"
 
-const int ContextView::kWidgetSpacing = 50;
+namespace {
+constexpr int kWidgetSpacing = 50;
+}
 
 ContextView::ContextView(QWidget *parent)
     : QWidget(parent),
@@ -427,10 +431,10 @@ void ContextView::NoSong() {
 
 void ContextView::UpdateFonts() {
 
-  for (QLabel *l : labels_play_all_) {
+  for (QLabel *l : std::as_const(labels_play_all_)) {
     l->setFont(font_normal_);
   }
-  for (QTextEdit *e : textedit_play_) {
+  for (QTextEdit *e : std::as_const(textedit_play_)) {
     e->setFont(font_normal_);
   }
 
@@ -452,7 +456,7 @@ void ContextView::SetSong() {
     widget_album_->hide();
     widget_album_changed = true;
   }
-  if (widget_album_changed) emit AlbumEnabledChanged();
+  if (widget_album_changed) Q_EMIT AlbumEnabledChanged();
 
   if (action_show_data_->isChecked()) {
     widget_play_data_->show();
@@ -547,7 +551,10 @@ void ContextView::SetSong() {
 
 void ContextView::UpdateSong(const Song &song) {
 
-  textedit_top_->SetText(QStringLiteral("<b>%1</b><br />%2").arg(Utilities::ReplaceMessage(title_fmt_, song, QStringLiteral("<br />"), true), Utilities::ReplaceMessage(summary_fmt_, song, QStringLiteral("<br />"), true)));
+  const QString top_text = QStringLiteral("<b>%1</b><br />%2").arg(Utilities::ReplaceMessage(title_fmt_, song, QStringLiteral("<br />"), true), Utilities::ReplaceMessage(summary_fmt_, song, QStringLiteral("<br />"), true));
+  if (top_text != textedit_top_->Text()) {
+    textedit_top_->SetText(top_text);
+  }
 
   if (action_show_data_->isChecked()) {
     if (song.filetype() != song_playing_.filetype()) label_filetype_->setText(song.TextForFiletype());
@@ -615,11 +622,11 @@ void ContextView::UpdateSong(const Song &song) {
 
 void ContextView::ResetSong() {
 
-  for (QLabel *l : labels_play_data_) {
+  for (QLabel *l : std::as_const(labels_play_data_)) {
     l->clear();
   }
 
-  for (QTextEdit *l : textedit_play_) {
+  for (QTextEdit *l : std::as_const(textedit_play_)) {
     l->clear();
   }
 

src/context/contextview.h

@@ -80,10 +80,10 @@ class ContextView : public QWidget {
   void SearchLyrics();
   void UpdateFonts();
 
- signals:
+ Q_SIGNALS:
   void AlbumEnabledChanged();
 
- private slots:
+ private Q_SLOTS:
   void ActionShowAlbum();
   void ActionShowData();
   void ActionShowLyrics();
@@ -92,7 +92,7 @@ class ContextView : public QWidget {
   void FadeStopFinished();
   void UpdateLyrics(const quint64 id, const QString &provider, const QString &lyrics);
 
- public slots:
+ public Q_SLOTS:
   void ReloadSettings();
   void Playing();
   void Stopped();
@@ -101,8 +101,6 @@ class ContextView : public QWidget {
   void AlbumCoverLoaded(const Song &song, const QImage &image);
 
  private:
-  static const int kWidgetSpacing;
-
   Application *app_;
   CollectionView *collectionview_;
   AlbumCoverChoiceController *album_cover_choice_controller_;

src/core/application.cpp

@@ -24,6 +24,7 @@
 
 #include "application.h"
 
+#include <utility>
 #include <functional>
 #include <chrono>
 
@@ -68,6 +69,7 @@
 #include "lyrics/azlyricscomlyricsprovider.h"
 #include "lyrics/elyricsnetlyricsprovider.h"
 #include "lyrics/letraslyricsprovider.h"
+#include "lyrics/lyricfindlyricsprovider.h"
 
 #include "scrobbler/audioscrobbler.h"
 #include "scrobbler/lastfmscrobbler.h"
@@ -169,15 +171,16 @@ class ApplicationImpl {
         lyrics_providers_([app]() {
           LyricsProviders *lyrics_providers = new LyricsProviders(app);
           // Initialize the repository of lyrics providers.
-          lyrics_providers->AddProvider(new GeniusLyricsProvider(app->network()));
+          lyrics_providers->AddProvider(new GeniusLyricsProvider(lyrics_providers->network()));
-          lyrics_providers->AddProvider(new OVHLyricsProvider(app->network()));
+          lyrics_providers->AddProvider(new OVHLyricsProvider(lyrics_providers->network()));
-          lyrics_providers->AddProvider(new LoloLyricsProvider(app->network()));
+          lyrics_providers->AddProvider(new LoloLyricsProvider(lyrics_providers->network()));
-          lyrics_providers->AddProvider(new MusixmatchLyricsProvider(app->network()));
+          lyrics_providers->AddProvider(new MusixmatchLyricsProvider(lyrics_providers->network()));
-          lyrics_providers->AddProvider(new ChartLyricsProvider(app->network()));
+          lyrics_providers->AddProvider(new ChartLyricsProvider(lyrics_providers->network()));
-          lyrics_providers->AddProvider(new SongLyricsComLyricsProvider(app->network()));
+          lyrics_providers->AddProvider(new SongLyricsComLyricsProvider(lyrics_providers->network()));
-          lyrics_providers->AddProvider(new AzLyricsComLyricsProvider(app->network()));
+          lyrics_providers->AddProvider(new AzLyricsComLyricsProvider(lyrics_providers->network()));
-          lyrics_providers->AddProvider(new ElyricsNetLyricsProvider(app->network()));
+          lyrics_providers->AddProvider(new ElyricsNetLyricsProvider(lyrics_providers->network()));
-          lyrics_providers->AddProvider(new LetrasLyricsProvider(app->network()));
+          lyrics_providers->AddProvider(new LetrasLyricsProvider(lyrics_providers->network()));
+          lyrics_providers->AddProvider(new LyricFindLyricsProvider(lyrics_providers->network()));
           lyrics_providers->ReloadSettings();
           return lyrics_providers;
         }),
@@ -245,6 +248,8 @@ class ApplicationImpl {
 Application::Application(QObject *parent)
     : QObject(parent), p_(new ApplicationImpl(this)) {
 
+  setObjectName(QLatin1String(metaObject()->className()));
+
   device_finders()->Init();
   collection()->Init();
   tag_reader_client();
@@ -257,11 +262,11 @@ Application::~Application() {
 
    qLog(Debug) << "Terminating application";
 
-  for (QThread *thread : threads_) {
+  for (QThread *thread : std::as_const(threads_)) {
     thread->quit();
   }
 
-  for (QThread *thread : threads_) {
+  for (QThread *thread : std::as_const(threads_)) {
     thread->wait();
     thread->deleteLater();
   }
@@ -272,6 +277,8 @@ QThread *Application::MoveToNewThread(QObject *object) {
 
   QThread *thread = new QThread(this);
 
+  thread->setObjectName(object->objectName());
+
   MoveToThread(object, thread);
 
   thread->start();
@@ -340,9 +347,9 @@ void Application::ExitReceived() {
 
 }
 
-void Application::AddError(const QString &message) { emit ErrorAdded(message); }
+void Application::AddError(const QString &message) { Q_EMIT ErrorAdded(message); }
-void Application::ReloadSettings() { emit SettingsChanged(); }
+void Application::ReloadSettings() { Q_EMIT SettingsChanged(); }
-void Application::OpenSettingsDialogAtPage(SettingsDialog::Page page) { emit SettingsDialogRequested(page); }
+void Application::OpenSettingsDialogAtPage(SettingsDialog::Page page) { Q_EMIT SettingsDialogRequested(page); }
 
 SharedPtr<TagReaderClient> Application::tag_reader_client() const { return p_->tag_reader_client_.ptr(); }
 SharedPtr<Database> Application::database() const { return p_->database_.ptr(); }

src/core/application.h

@@ -112,15 +112,15 @@ class Application : public QObject {
   QThread *MoveToNewThread(QObject *object);
   static void MoveToThread(QObject *object, QThread *thread);
 
- private slots:
+ private Q_SLOTS:
   void ExitReceived();
 
- public slots:
+ public Q_SLOTS:
   void AddError(const QString &message);
   void ReloadSettings();
   void OpenSettingsDialogAtPage(SettingsDialog::Page page);
 
- signals:
+ Q_SIGNALS:
   void ErrorAdded(const QString &message);
   void SettingsChanged();
   void SettingsDialogRequested(const SettingsDialog::Page page);

src/core/commandlineoptions.cpp

@@ -46,7 +46,9 @@
 
 #include <getopt.h>
 
-const char *CommandlineOptions::kHelpText =
+namespace {
+
+constexpr char kHelpText[] =
     "%1: strawberry [%2] [%3]\n"
     "\n"
     "%4:\n"
@@ -83,7 +85,9 @@ const char *CommandlineOptions::kHelpText =
     "      --log-levels <levels>  %33\n"
     "      --version              %34\n";
 
-const char *CommandlineOptions::kVersionText = "Strawberry %1";
+constexpr char kVersionText[] = "Strawberry %1";
+
+}  // namespace
 
 CommandlineOptions::CommandlineOptions(int argc, char **argv)
     : argc_(argc),
@@ -202,7 +206,7 @@ bool CommandlineOptions::Parse() {
 
   // Parse the arguments
   bool ok = false;
-  forever {
+  Q_FOREVER {
 #ifdef Q_OS_WIN32
     int c = getopt_long(argc_, argv_, L"hptusqrfv:c:alk:i:oyg:w:", kOptions, nullptr);
 #else

src/core/commandlineoptions.h

@@ -41,9 +41,6 @@ class CommandlineOptions {
  public:
   explicit CommandlineOptions(int argc = 0, char **argv = nullptr);
 
-  static const char *kHelpText;
-  static const char *kVersionText;
-
   // Don't change the values or order, these get serialised and sent to
   // possibly a different version of Strawberry
   enum class UrlListAction {

src/core/database.cpp

@@ -71,6 +71,8 @@ Database::Database(Application *app, QObject *parent, const QString &database_na
       startup_schema_version_(-1),
       original_thread_(nullptr) {
 
+  setObjectName(QLatin1String(metaObject()->className()));
+
   original_thread_ = thread();
 
   {
@@ -105,7 +107,7 @@ void Database::Exit() {
   Q_ASSERT(QThread::currentThread() == thread());
   Close();
   moveToThread(original_thread_);
-  emit ExitFinished();
+  Q_EMIT ExitFinished();
 
 }
 
@@ -161,7 +163,7 @@ QSqlDatabase Database::Connect() {
   // Attach external databases
   QStringList keys = attached_databases_.keys();
   for (const QString &key : std::as_const(keys)) {
-    QString filename = attached_databases_[key].filename_;
+    QString filename = attached_databases_.value(key).filename_;
 
     if (!injected_database_name_.isNull()) filename = injected_database_name_;
 
@@ -182,7 +184,7 @@ QSqlDatabase Database::Connect() {
   // We might have to initialize the schema in some attached databases now, if they were deleted and don't match up with the main schema version.
   keys = attached_databases_.keys();
   for (const QString &key : std::as_const(keys)) {
-    if (attached_databases_[key].is_temporary_ && attached_databases_[key].schema_.isEmpty()) {
+    if (attached_databases_.value(key).is_temporary_ && attached_databases_.value(key).schema_.isEmpty()) {
       continue;
     }
     // Find out if there are any tables in this database
@@ -258,7 +260,7 @@ void Database::RecreateAttachedDb(const QString &database_name) {
     return;
   }
 
-  const QString filename = attached_databases_[database_name].filename_;
+  const QString filename = attached_databases_.value(database_name).filename_;
 
   QMutexLocker l(&mutex_);
   {
@@ -388,7 +390,8 @@ void Database::ExecSchemaCommandsFromFile(QSqlDatabase &db, const QString &filen
 void Database::ExecSchemaCommands(QSqlDatabase &db, const QString &schema, int schema_version, bool in_transaction) {
 
   // Run each command
-  QStringList commands = schema.split(QRegularExpression(QStringLiteral("; *\n\n")));
+  static const QRegularExpression regex_split_commands(QStringLiteral("; *\n\n"));
+  QStringList commands = schema.split(regex_split_commands);
 
   // We don't want this list to reflect possible DB schema changes, so we initialize it before executing any statements.
   // If no outer transaction is provided the song tables need to be queried before beginning an inner transaction!
@@ -481,8 +484,8 @@ void Database::ReportErrors(const SqlQuery &query) {
   if (sql_error.isValid()) {
     qLog(Error) << "Unable to execute SQL query:" << sql_error;
     qLog(Error) << "Failed SQL query:" << query.LastQuery();
-    emit Error(tr("Unable to execute SQL query: %1").arg(sql_error.text()));
+    Q_EMIT Error(tr("Unable to execute SQL query: %1").arg(sql_error.text()));
-    emit Error(tr("Failed SQL query: %1").arg(query.LastQuery()));
+    Q_EMIT Error(tr("Failed SQL query: %1").arg(query.LastQuery()));
   }
 
 }

src/core/database.h

@@ -83,15 +83,15 @@ class Database : public QObject {
   void AttachDatabaseOnDbConnection(const QString &database_name, const AttachedDatabase &database, QSqlDatabase &db);
   void DetachDatabase(const QString &database_name);
 
- signals:
+ Q_SIGNALS:
   void ExitFinished();
   void Error(const QString &error);
   void Errors(const QStringList &errors);
 
- private slots:
+ private Q_SLOTS:
   void Exit();
 
- public slots:
+ public Q_SLOTS:
   void DoBackup();
 
  private:

src/core/deletefiles.cpp

@@ -34,7 +34,9 @@
 #include "deletefiles.h"
 #include "musicstorage.h"
 
-const int DeleteFiles::kBatchSize = 50;
+namespace {
+constexpr int kBatchSize = 50;
+}
 
 DeleteFiles::DeleteFiles(SharedPtr<TaskManager> task_manager, SharedPtr<MusicStorage> storage, const bool use_trash, QObject *parent)
     : QObject(parent),
@@ -97,7 +99,7 @@ void DeleteFiles::ProcessSomeFiles() {
 
     task_manager_->SetTaskFinished(task_id_);
 
-    emit Finished(songs_with_errors_);
+    Q_EMIT Finished(songs_with_errors_);
 
     // Move back to the original thread so deleteLater() can get called in the main thread's event loop
     moveToThread(original_thread_);
@@ -114,7 +116,7 @@ void DeleteFiles::ProcessSomeFiles() {
   for (; progress_ < n; ++progress_) {
     task_manager_->SetTaskProgress(task_id_, progress_, songs_.count());
 
-    const Song &song = songs_[progress_];
+    const Song song = songs_.value(progress_);
 
     MusicStorage::DeleteJob job;
     job.metadata_ = song;

src/core/deletefiles.h

@@ -41,15 +41,13 @@ class DeleteFiles : public QObject {
   explicit DeleteFiles(SharedPtr<TaskManager> task_manager, SharedPtr<MusicStorage> storage, const bool use_trash, QObject *parent = nullptr);
   ~DeleteFiles() override;
 
-  static const int kBatchSize;
-
   void Start(const SongList &songs);
   void Start(const QStringList &filenames);
 
- signals:
+ Q_SIGNALS:
   void Finished(const SongList &songs_with_errors);
 
- private slots:
+ private Q_SLOTS:
   void ProcessSomeFiles();
 
  private:

src/core/filesystemwatcherinterface.h

@@ -39,7 +39,7 @@ class FileSystemWatcherInterface : public QObject {
 
   static FileSystemWatcherInterface *Create(QObject *parent = nullptr);
 
- signals:
+ Q_SIGNALS:
   void PathChanged(const QString &path);
 };
 

src/core/localredirectserver.cpp

@@ -87,7 +87,7 @@ void LocalRedirectServer::incomingConnection(qintptr socket_descriptor) {
     delete tcp_socket;
     close();
     error_ = QLatin1String("Unable to set socket descriptor");
-    emit Finished();
+    Q_EMIT Finished();
     return;
   }
   socket_ = tcp_socket;
@@ -114,7 +114,7 @@ void LocalRedirectServer::ReadyRead() {
     socket_ = nullptr;
     request_url_ = ParseUrlFromRequest(buffer_);
     close();
-    emit Finished();
+    Q_EMIT Finished();
   }
   else {
     QObject::connect(socket_, &QAbstractSocket::readyRead, this, &LocalRedirectServer::ReadyRead);
@@ -129,9 +129,9 @@ void LocalRedirectServer::WriteTemplate() const {
   QString page_data = QString::fromUtf8(page_file.readAll());
   page_file.close();
 
-  QRegularExpression tr_regexp(QStringLiteral("tr\\(\"([^\"]+)\"\\)"));
+  static const QRegularExpression tr_regexp(QStringLiteral("tr\\(\"([^\"]+)\"\\)"));
   qint64 offset = 0;
-  forever {
+  Q_FOREVER {
     QRegularExpressionMatch re_match = tr_regexp.match(page_data, offset);
     if (!re_match.hasMatch()) break;
     offset = re_match.capturedStart();

src/core/localredirectserver.h

@@ -45,10 +45,10 @@ class LocalRedirectServer : public QTcpServer {
   const QUrl &request_url() const { return request_url_; }
   const QString &error() const { return error_; }
 
- signals:
+ Q_SIGNALS:
   void Finished();
 
- public slots:
+ public Q_SLOTS:
   void NewConnection();
   void incomingConnection(qintptr socket_descriptor) override;
   void Encrypted();
@@ -57,7 +57,6 @@ class LocalRedirectServer : public QTcpServer {
   void ReadyRead();
 
  private:
-  bool GenerateCertificate();
   void WriteTemplate() const;
   QUrl ParseUrlFromRequest(const QByteArray &request) const;
 

src/core/macfslistener.h

@@ -44,10 +44,10 @@ class MacFSListener : public FileSystemWatcherInterface {
   void RemovePath(const QString &path);
   void Clear();
 
- signals:
+ Q_SIGNALS:
   void PathChanged(const QString &path);
 
- private slots:
+ private Q_SLOTS:
   void UpdateStream();
 
  private:

src/core/macfslistener.mm

@@ -34,9 +34,9 @@
 
 MacFSListener::MacFSListener(QObject *parent)
     : FileSystemWatcherInterface(parent),
-    run_loop_(nullptr),
+      run_loop_(nullptr),
-    stream_(nullptr),
+      stream_(nullptr),
-    update_timer_(new QTimer(this)) {
+      update_timer_(new QTimer(this)) {
 
   update_timer_->setSingleShot(true);
   update_timer_->setInterval(2000);
@@ -60,7 +60,7 @@ void MacFSListener::EventStreamCallback(ConstFSEventStreamRef stream, void *user
     while (path.endsWith(QLatin1Char('/'))) {
       path.chop(1);
     }
-    emit me->PathChanged(path);
+    Q_EMIT me->PathChanged(path);
   }
 
 }

src/core/macsystemtrayicon.h

@@ -71,10 +71,10 @@ class SystemTrayIcon : public QObject {
   QPixmap CreateIcon(const QPixmap &icon, const QPixmap &grey_icon);
   void UpdateIcon();
 
- private slots:
+ private Q_SLOTS:
   void ActionChanged();
 
- signals:
+ Q_SIGNALS:
   void ChangeVolume(const int delta);
   void SeekForward();
   void SeekBackward();

src/core/mainwindow.cpp

@@ -23,8 +23,9 @@
 #include "version.h"
 
 #include <cmath>
-#include <functional>
 #include <algorithm>
+#include <utility>
+#include <functional>
 #include <chrono>
 #include <memory>
 
@@ -399,16 +400,16 @@ MainWindow::MainWindow(Application *app, SharedPtr<SystemTrayIcon> tray_icon, OS
   ui_->tabs->AddTab(tidal_view_, QStringLiteral("tidal"), IconLoader::Load(QStringLiteral("tidal"), true, 0, 32), tr("Tidal"));
 #endif
 #ifdef HAVE_SPOTIFY
-  ui_->tabs->AddTab(spotify_view_, QLatin1String("spotify"), IconLoader::Load(QStringLiteral("spotify"), true, 0, 32), tr("Spotify"));
+  ui_->tabs->AddTab(spotify_view_, QStringLiteral("spotify"), IconLoader::Load(QStringLiteral("spotify"), true, 0, 32), tr("Spotify"));
 #endif
 #ifdef HAVE_QOBUZ
   ui_->tabs->AddTab(qobuz_view_, QStringLiteral("qobuz"), IconLoader::Load(QStringLiteral("qobuz"), true, 0, 32), tr("Qobuz"));
 #endif
 
   // Add the playing widget to the fancy tab widget
-  ui_->tabs->addBottomWidget(ui_->widget_playing);
+  ui_->tabs->AddBottomWidget(ui_->widget_playing);
-  ui_->tabs->setBackgroundPixmap(QPixmap(QStringLiteral(":/pictures/sidebar-background.png")));
+  ui_->tabs->SetBackgroundPixmap(QPixmap(QStringLiteral(":/pictures/sidebar-background.png")));
-  ui_->tabs->Load(QLatin1String(kSettingsGroup));
+  ui_->tabs->LoadSettings(QLatin1String(kSettingsGroup));
 
   track_position_timer_->setInterval(kTrackPositionUpdateTimeMs);
   QObject::connect(track_position_timer_, &QTimer::timeout, this, &MainWindow::UpdateTrackPosition);
@@ -489,7 +490,7 @@ MainWindow::MainWindow(Application *app, SharedPtr<SystemTrayIcon> tray_icon, OS
   ui_->action_transcoder->setIcon(IconLoader::Load(QStringLiteral("tools-wizard")));
   ui_->action_update_collection->setIcon(IconLoader::Load(QStringLiteral("view-refresh")));
   ui_->action_full_collection_scan->setIcon(IconLoader::Load(QStringLiteral("view-refresh")));
-  ui_->action_abort_collection_scan->setIcon(IconLoader::Load(QStringLiteral("dialog-error")));
+  ui_->action_stop_collection_scan->setIcon(IconLoader::Load(QStringLiteral("dialog-error")));
   ui_->action_settings->setIcon(IconLoader::Load(QStringLiteral("configure")));
   ui_->action_import_data_from_last_fm->setIcon(IconLoader::Load(QStringLiteral("scrobble")));
   ui_->action_console->setIcon(IconLoader::Load(QStringLiteral("keyboard")));
@@ -555,7 +556,7 @@ MainWindow::MainWindow(Application *app, SharedPtr<SystemTrayIcon> tray_icon, OS
   QObject::connect(ui_->action_jump, &QAction::triggered, ui_->playlist->view(), &PlaylistView::JumpToCurrentlyPlayingTrack);
   QObject::connect(ui_->action_update_collection, &QAction::triggered, &*app_->collection(), &SCollection::IncrementalScan);
   QObject::connect(ui_->action_full_collection_scan, &QAction::triggered, &*app_->collection(), &SCollection::FullScan);
-  QObject::connect(ui_->action_abort_collection_scan, &QAction::triggered, &*app_->collection(), &SCollection::AbortScan);
+  QObject::connect(ui_->action_stop_collection_scan, &QAction::triggered, &*app_->collection(), &SCollection::StopScan);
 #if defined(HAVE_GSTREAMER)
   QObject::connect(ui_->action_add_files_to_transcoder, &QAction::triggered, this, &MainWindow::AddFilesToTranscoder);
   ui_->action_add_files_to_transcoder->setIcon(IconLoader::Load(QStringLiteral("tools-wizard")));
@@ -621,6 +622,7 @@ MainWindow::MainWindow(Application *app, SharedPtr<SystemTrayIcon> tray_icon, OS
   QObject::connect(&*app_->player(), &Player::VolumeChanged, ui_->volume, &VolumeSlider::SetValue);
   QObject::connect(&*app_->player(), &Player::ForceShowOSD, this, &MainWindow::ForceShowOSD);
 
+  QObject::connect(&*app_->playlist_manager(), &PlaylistManager::AllPlaylistsLoaded, &*app->player(), &Player::PlaylistsLoaded);
   QObject::connect(&*app_->playlist_manager(), &PlaylistManager::CurrentSongChanged, this, &MainWindow::SongChanged);
   QObject::connect(&*app_->playlist_manager(), &PlaylistManager::CurrentSongChanged, &*app_->player(), &Player::CurrentMetadataChanged);
   QObject::connect(&*app_->playlist_manager(), &PlaylistManager::EditingFinished, this, &MainWindow::PlaylistEditFinished);
@@ -844,7 +846,7 @@ MainWindow::MainWindow(Application *app, SharedPtr<SystemTrayIcon> tray_icon, OS
 #endif
 
   // Fancy tabs
-  QObject::connect(ui_->tabs, &FancyTabWidget::CurrentChanged, this, &MainWindow::TabSwitched);
+  QObject::connect(ui_->tabs, &FancyTabWidget::CurrentTabChanged, this, &MainWindow::TabSwitched);
 
   // Context
   QObject::connect(&*app_->playlist_manager(), &PlaylistManager::CurrentSongChanged, context_view_, &ContextView::SongChanged);
@@ -1023,9 +1025,6 @@ MainWindow::MainWindow(Application *app, SharedPtr<SystemTrayIcon> tray_icon, OS
 
   CommandlineOptionsReceived(options);
 
-  if (!options.contains_play_options()) {
-    LoadPlaybackStatus();
-  }
   if (app_->scrobbler()->enabled() && !app_->scrobbler()->offline()) {
     app_->scrobbler()->Submit();
   }
@@ -1280,8 +1279,8 @@ void MainWindow::RefreshStyleSheet() {
 void MainWindow::SaveSettings() {
 
   SaveGeometry();
-  SavePlaybackStatus();
   app_->player()->SaveVolume();
+  app_->player()->SavePlaybackStatus();
   ui_->tabs->SaveSettings(QLatin1String(kSettingsGroup));
   ui_->playlist->view()->SaveSettings();
   app_->scrobbler()->WriteCache();
@@ -1307,7 +1306,7 @@ void MainWindow::Exit() {
   else {
     if (app_->player()->engine()->is_fadeout_enabled()) {
       // To shut down the application when fadeout will be finished
-      QObject::connect(&*app_->player()->engine(), &EngineBase::FadeoutFinishedSignal, this, &MainWindow::DoExit);
+      QObject::connect(&*app_->player()->engine(), &EngineBase::Finished, this, &MainWindow::DoExit);
       if (app_->player()->GetState() == EngineBase::State::Playing) {
         app_->player()->Stop();
         ignore_close_ = true;
@@ -1371,8 +1370,12 @@ void MainWindow::MediaStopped() {
   ui_->button_love->setEnabled(false);
   tray_icon_->LoveStateChanged(false);
 
-  track_position_timer_->stop();
+  if (track_position_timer_->isActive()) {
-  track_slider_timer_->stop();
+    track_position_timer_->stop();
+  }
+  if (track_slider_timer_->isActive()) {
+    track_slider_timer_->stop();
+  }
   ui_->track_slider->SetStopped();
   tray_icon_->SetProgress(0);
   tray_icon_->SetStopped();
@@ -1400,8 +1403,12 @@ void MainWindow::MediaPaused() {
 
   ui_->action_play_pause->setEnabled(true);
 
-  track_position_timer_->stop();
+  if (!track_position_timer_->isActive()) {
-  track_slider_timer_->stop();
+    track_position_timer_->start();
+  }
+  if (!track_slider_timer_->isActive()) {
+    track_slider_timer_->start();
+  }
 
   tray_icon_->SetPaused();
 
@@ -1426,8 +1433,13 @@ void MainWindow::MediaPlaying() {
   ui_->track_slider->SetCanSeek(can_seek);
   tray_icon_->SetPlaying(enable_play_pause);
 
-  track_position_timer_->start();
+  if (!track_position_timer_->isActive()) {
-  track_slider_timer_->start();
+    track_position_timer_->start();
+  }
+  if (!track_slider_timer_->isActive()) {
+    track_slider_timer_->start();
+  }
+
   UpdateTrackPosition();
 
 }
@@ -1535,80 +1547,6 @@ void MainWindow::SaveGeometry() {
 
 }
 
-void MainWindow::SavePlaybackStatus() {
-
-  Settings s;
-
-  s.beginGroup(Player::kSettingsGroup);
-  s.setValue("playback_state", static_cast<int>(app_->player()->GetState()));
-  if (app_->player()->GetState() == EngineBase::State::Playing || app_->player()->GetState() == EngineBase::State::Paused) {
-    s.setValue("playback_playlist", app_->playlist_manager()->active()->id());
-    s.setValue("playback_position", app_->player()->engine()->position_nanosec() / kNsecPerSec);
-  }
-  else {
-    s.setValue("playback_playlist", -1);
-    s.setValue("playback_position", 0);
-  }
-
-  s.endGroup();
-
-}
-
-void MainWindow::LoadPlaybackStatus() {
-
-  Settings s;
-
-  s.beginGroup(BehaviourSettingsPage::kSettingsGroup);
-  const bool resume_playback = s.value("resumeplayback", false).toBool();
-  s.endGroup();
-
-  s.beginGroup(Player::kSettingsGroup);
-  const EngineBase::State playback_state = static_cast<EngineBase::State>(s.value("playback_state", static_cast<int>(EngineBase::State::Empty)).toInt());
-  s.endGroup();
-
-  if (resume_playback && playback_state != EngineBase::State::Empty && playback_state != EngineBase::State::Idle) {
-    SharedPtr<QMetaObject::Connection> connection = make_shared<QMetaObject::Connection>();
-    *connection = QObject::connect(&*app_->playlist_manager(), &PlaylistManager::AllPlaylistsLoaded, this, [this, connection]() {
-      QObject::disconnect(*connection);
-      QTimer::singleShot(400ms, this, &MainWindow::ResumePlayback);
-    });
-  }
-
-}
-
-void MainWindow::ResumePlayback() {
-
-  qLog(Debug) << "Resuming playback";
-
-  Settings s;
-  s.beginGroup(Player::kSettingsGroup);
-  const EngineBase::State playback_state = static_cast<EngineBase::State>(s.value("playback_state", static_cast<int>(EngineBase::State::Empty)).toInt());
-  int playback_playlist = s.value("playback_playlist", -1).toInt();
-  int playback_position = s.value("playback_position", 0).toInt();
-  s.endGroup();
-
-  if (playback_playlist == app_->playlist_manager()->current()->id()) {
-    // Set active to current to resume playback on correct playlist.
-    app_->playlist_manager()->SetActiveToCurrent();
-    if (playback_state == EngineBase::State::Paused) {
-      SharedPtr<QMetaObject::Connection> connection = make_shared<QMetaObject::Connection>();
-      *connection = QObject::connect(&*app_->player(), &Player::Playing, &*app_->player(), [this, connection]() {
-        QObject::disconnect(*connection);
-        QTimer::singleShot(300, &*app_->player(), &Player::PlayPauseHelper);
-      });
-    }
-    app_->player()->Play(playback_position * kNsecPerSec);
-  }
-
-  // Reset saved playback status so we don't resume again from the same position.
-  s.beginGroup(Player::kSettingsGroup);
-  s.setValue("playback_state", static_cast<int>(EngineBase::State::Empty));
-  s.setValue("playback_playlist", -1);
-  s.setValue("playback_position", 0);
-  s.endGroup();
-
-}
-
 void MainWindow::PlayIndex(const QModelIndex &idx, Playlist::AutoScroll autoscroll) {
 
   if (!idx.isValid()) return;
@@ -1620,7 +1558,7 @@ void MainWindow::PlayIndex(const QModelIndex &idx, Playlist::AutoScroll autoscro
   }
 
   app_->playlist_manager()->SetActiveToCurrent();
-  app_->player()->PlayAt(row, 0, EngineBase::TrackChangeType::Manual, autoscroll, true);
+  app_->player()->PlayAt(row, false, 0, EngineBase::TrackChangeType::Manual, autoscroll, true);
 
 }
 
@@ -1637,14 +1575,14 @@ void MainWindow::PlaylistDoubleClick(const QModelIndex &idx) {
   switch (doubleclick_playlist_addmode_) {
     case BehaviourSettingsPage::PlaylistAddBehaviour::Play:
       app_->playlist_manager()->SetActiveToCurrent();
-      app_->player()->PlayAt(source_idx.row(), 0, EngineBase::TrackChangeType::Manual, Playlist::AutoScroll::Never, true, true);
+      app_->player()->PlayAt(source_idx.row(), false, 0, EngineBase::TrackChangeType::Manual, Playlist::AutoScroll::Never, true, true);
       break;
 
     case BehaviourSettingsPage::PlaylistAddBehaviour::Enqueue:
       app_->playlist_manager()->current()->queue()->ToggleTracks(QModelIndexList() << source_idx);
       if (app_->player()->GetState() != EngineBase::State::Playing) {
         app_->playlist_manager()->SetActiveToCurrent();
-        app_->player()->PlayAt(app_->playlist_manager()->current()->queue()->TakeNext(), 0, EngineBase::TrackChangeType::Manual, Playlist::AutoScroll::Never, true);
+        app_->player()->PlayAt(app_->playlist_manager()->current()->queue()->TakeNext(), false, 0, EngineBase::TrackChangeType::Manual, Playlist::AutoScroll::Never, true);
       }
       break;
   }
@@ -1652,7 +1590,7 @@ void MainWindow::PlaylistDoubleClick(const QModelIndex &idx) {
 }
 
 void MainWindow::VolumeWheelEvent(const int delta) {
-  ui_->volume->setValue(ui_->volume->value() + delta / 30);
+  ui_->volume->HandleWheel(delta);
 }
 
 void MainWindow::ToggleShowHide() {
@@ -1686,7 +1624,7 @@ void MainWindow::ToggleHide() {
 
 void MainWindow::StopAfterCurrent() {
   app_->playlist_manager()->current()->StopAfter(app_->playlist_manager()->current()->current_row());
-  emit StopAfterToggled(app_->playlist_manager()->active()->stop_after_current());
+  Q_EMIT StopAfterToggled(app_->playlist_manager()->active()->stop_after_current());
 }
 
 void MainWindow::showEvent(QShowEvent *e) {
@@ -1896,7 +1834,8 @@ void MainWindow::AddToPlaylistFromAction(QAction *action) {
   SongList songs;
 
   // Get the selected playlist items
-  for (const QModelIndex &proxy_index : ui_->playlist->view()->selectionModel()->selectedRows()) {
+  const QModelIndexList proxy_indexes = ui_->playlist->view()->selectionModel()->selectedRows();
+  for (const QModelIndex &proxy_index : proxy_indexes) {
     const QModelIndex source_index = app_->playlist_manager()->current()->filter()->mapToSource(proxy_index);
     if (!source_index.isValid()) continue;
     PlaylistItemPtr item = app_->playlist_manager()->current()->item_at(source_index.row());
@@ -1963,7 +1902,7 @@ void MainWindow::PlaylistRightClick(const QPoint global_pos, const QModelIndex &
   playlist_stop_after_->setEnabled(source_index.isValid());
 
   // Are any of the selected songs editable or queued?
-  QModelIndexList selection = ui_->playlist->view()->selectionModel()->selectedRows();
+  const QModelIndexList selection = ui_->playlist->view()->selectionModel()->selectedRows();
   bool cue_selected = false;
   qint64 selected = ui_->playlist->view()->selectionModel()->selectedRows().count();
   int editable = 0;
@@ -2110,7 +2049,7 @@ void MainWindow::PlaylistRightClick(const QPoint global_pos, const QModelIndex &
 #endif
 
     // Remove old item actions, if any.
-    for (QAction *action : playlistitem_actions_) {
+    for (QAction *action : std::as_const(playlistitem_actions_)) {
       playlist_menu_->removeAction(action);
     }
 
@@ -2120,7 +2059,7 @@ void MainWindow::PlaylistRightClick(const QPoint global_pos, const QModelIndex &
     playlist_menu_->insertActions(playlistitem_actions_separator_, playlistitem_actions_);
   }
 
-  //if it isn't the first time we right click, we need to remove the menu previously created
+  // If it isn't the first time we right click, we need to remove the menu previously created
   if (playlist_add_to_another_ != nullptr) {
     playlist_menu_->removeAction(playlist_add_to_another_);
     delete playlist_add_to_another_;
@@ -2132,18 +2071,19 @@ void MainWindow::PlaylistRightClick(const QPoint global_pos, const QModelIndex &
     QMenu *add_to_another_menu = new QMenu(tr("Add to another playlist"), this);
     add_to_another_menu->setIcon(IconLoader::Load(QStringLiteral("list-add")));
 
-    for (const PlaylistBackend::Playlist &playlist : app_->playlist_backend()->GetAllOpenPlaylists()) {
+    const QList<int> playlist_ids = app_->playlist_manager()->playlist_ids();
-      // don't add the current playlist
+    for (const int playlist_id : playlist_ids) {
-      if (playlist.id != app_->playlist_manager()->current()->id()) {
+      // Don't add the current playlist
+      if (playlist_id != app_->playlist_manager()->current()->id()) {
         QAction *existing_playlist = new QAction(this);
-        existing_playlist->setText(playlist.name);
+        existing_playlist->setText(app_->playlist_manager()->playlist_name(playlist_id));
-        existing_playlist->setData(playlist.id);
+        existing_playlist->setData(playlist_id);
         add_to_another_menu->addAction(existing_playlist);
       }
     }
 
     add_to_another_menu->addSeparator();
-    // add to a new playlist
+    // Add to a new playlist
     QAction *new_playlist = new QAction(this);
     new_playlist->setText(tr("New playlist"));
     new_playlist->setData(-1);  // fake id
@@ -2177,7 +2117,8 @@ void MainWindow::RescanSongs() {
 
   SongList songs;
 
-  for (const QModelIndex &proxy_index : ui_->playlist->view()->selectionModel()->selectedRows()) {
+  const QModelIndexList proxy_indexes = ui_->playlist->view()->selectionModel()->selectedRows();
+  for (const QModelIndex &proxy_index : proxy_indexes) {
     const QModelIndex source_index = app_->playlist_manager()->current()->filter()->mapToSource(proxy_index);
     if (!source_index.isValid()) continue;
     PlaylistItemPtr item(app_->playlist_manager()->current()->item_at(source_index.row()));
@@ -2202,7 +2143,8 @@ void MainWindow::EditTracks() {
   SongList songs;
   PlaylistItemPtrList items;
 
-  for (const QModelIndex &proxy_index : ui_->playlist->view()->selectionModel()->selectedRows()) {
+  const QModelIndexList proxy_indexes = ui_->playlist->view()->selectionModel()->selectedRows();
+  for (const QModelIndex &proxy_index : proxy_indexes) {
     const QModelIndex source_index = app_->playlist_manager()->current()->filter()->mapToSource(proxy_index);
     if (!source_index.isValid()) continue;
     PlaylistItemPtr item(app_->playlist_manager()->current()->item_at(source_index.row()));
@@ -2224,7 +2166,8 @@ void MainWindow::EditTracks() {
 
 void MainWindow::EditTagDialogAccepted() {
 
-  for (PlaylistItemPtr item : edit_tag_dialog_->playlist_items()) {
+  const PlaylistItemPtrList items = edit_tag_dialog_->playlist_items();
+  for (PlaylistItemPtr item : items) {
     item->Reload();
   }
 
@@ -2243,13 +2186,13 @@ void MainWindow::RenumberTracks() {
   // Get the index list in order
   std::stable_sort(indexes.begin(), indexes.end());
 
-  // if first selected song has a track number set, start from that offset
+  // If first selected song has a track number set, start from that offset
   if (!indexes.isEmpty()) {
     const Song first_song = app_->playlist_manager()->current()->item_at(indexes[0].row())->OriginalMetadata();
     if (first_song.track() > 0) track = first_song.track();
   }
 
-  for (const QModelIndex &proxy_index : indexes) {
+  for (const QModelIndex &proxy_index : std::as_const(indexes)) {
     const QModelIndex source_index = app_->playlist_manager()->current()->filter()->mapToSource(proxy_index);
     if (!source_index.isValid()) continue;
     PlaylistItemPtr item = app_->playlist_manager()->current()->item_at(source_index.row());
@@ -2280,7 +2223,8 @@ void MainWindow::SelectionSetValue() {
   Playlist::Column column = static_cast<Playlist::Column>(playlist_menu_index_.column());
   QVariant column_value = app_->playlist_manager()->current()->data(playlist_menu_index_);
 
-  for (const QModelIndex &proxy_index : ui_->playlist->view()->selectionModel()->selectedRows()) {
+  const QModelIndexList proxy_indexes = ui_->playlist->view()->selectionModel()->selectedRows();
+  for (const QModelIndex &proxy_index : proxy_indexes) {
     const QModelIndex source_index = app_->playlist_manager()->current()->filter()->mapToSource(proxy_index);
     if (!source_index.isValid()) continue;
     PlaylistItemPtr item = app_->playlist_manager()->current()->item_at(source_index.row());
@@ -2327,7 +2271,7 @@ void MainWindow::AddFile() {
   PlaylistParser parser(app_->collection_backend());
 
   // Show dialog
-  QStringList filenames = QFileDialog::getOpenFileNames(this, tr("Add file"), directory, QStringLiteral("%1 (%2);;%3;;%4").arg(tr("Music"), QLatin1String(FileView::kFileFilter), parser.filters(PlaylistParser::Type::Load), tr(kAllFilesFilterSpec)));
+  const QStringList filenames = QFileDialog::getOpenFileNames(this, tr("Add file"), directory, QStringLiteral("%1 (%2);;%3;;%4").arg(tr("Music"), QLatin1String(FileView::kFileFilter), parser.filters(PlaylistParser::Type::Load), tr(kAllFilesFilterSpec)));
 
   if (filenames.isEmpty()) return;
 
@@ -2394,7 +2338,8 @@ void MainWindow::ShowInCollection() {
   // Show the first valid selected track artist/album in CollectionView
 
   SongList songs;
-  for (const QModelIndex &proxy_index : ui_->playlist->view()->selectionModel()->selectedRows()) {
+  const QModelIndexList proxy_indexes = ui_->playlist->view()->selectionModel()->selectedRows();
+  for (const QModelIndex &proxy_index : proxy_indexes) {
     const QModelIndex source_index = app_->playlist_manager()->current()->filter()->mapToSource(proxy_index);
     if (!source_index.isValid()) continue;
     PlaylistItemPtr item = app_->playlist_manager()->current()->item_at(source_index.row());
@@ -2538,9 +2483,10 @@ void MainWindow::CommandlineOptionsReceived(const CommandlineOptions &options) {
   if (!options.urls().empty()) {
 
 #ifdef HAVE_TIDAL
-    for (const QUrl &url : options.urls()) {
+    const QList<QUrl> urls = options.urls();
+    for (const QUrl &url : urls) {
       if (url.scheme() == QLatin1String("tidal") && url.host() == QLatin1String("login")) {
-        emit AuthorizationUrlReceived(url);
+        Q_EMIT AuthorizationUrlReceived(url);
         return;
       }
     }
@@ -2585,7 +2531,7 @@ void MainWindow::CommandlineOptionsReceived(const CommandlineOptions &options) {
     app_->player()->SeekTo(app_->player()->engine()->position_nanosec() / kNsecPerSec + options.seek_by());
   }
 
-  if (options.play_track_at() != -1) app_->player()->PlayAt(options.play_track_at(), 0, EngineBase::TrackChangeType::Manual, Playlist::AutoScroll::Maybe, true);
+  if (options.play_track_at() != -1) app_->player()->PlayAt(options.play_track_at(), false, 0, EngineBase::TrackChangeType::Manual, Playlist::AutoScroll::Maybe, true);
 
   if (options.show_osd()) app_->player()->ShowOSD();
 
@@ -2618,7 +2564,7 @@ bool MainWindow::LoadUrl(const QString &url) {
   }
 #ifdef HAVE_TIDAL
   if (url.startsWith(QLatin1String("tidal://login"))) {
-    emit AuthorizationUrlReceived(QUrl(url));
+    Q_EMIT AuthorizationUrlReceived(QUrl(url));
     return true;
   }
 #endif
@@ -2641,7 +2587,8 @@ void MainWindow::AddFilesToTranscoder() {
 
   QStringList filenames;
 
-  for (const QModelIndex &proxy_index : ui_->playlist->view()->selectionModel()->selectedRows()) {
+  const QModelIndexList proxy_indexes = ui_->playlist->view()->selectionModel()->selectedRows();
+  for (const QModelIndex &proxy_index : proxy_indexes) {
     const QModelIndex source_index = app_->playlist_manager()->current()->filter()->mapToSource(proxy_index);
     if (!source_index.isValid()) continue;
     PlaylistItemPtr item(app_->playlist_manager()->current()->item_at(source_index.row()));
@@ -2753,7 +2700,8 @@ void MainWindow::PlaylistMoveToCollection() {
 void MainWindow::PlaylistOrganizeSelected(const bool copy) {
 
   SongList songs;
-  for (const QModelIndex &proxy_index : ui_->playlist->view()->selectionModel()->selectedRows()) {
+  const QModelIndexList proxy_indexes = ui_->playlist->view()->selectionModel()->selectedRows();
+  for (const QModelIndex &proxy_index : proxy_indexes) {
     const QModelIndex source_index = app_->playlist_manager()->current()->filter()->mapToSource(proxy_index);
     if (!source_index.isValid()) continue;
     PlaylistItemPtr item = app_->playlist_manager()->current()->item_at(source_index.row());
@@ -2775,7 +2723,8 @@ void MainWindow::PlaylistOrganizeSelected(const bool copy) {
 void MainWindow::PlaylistOpenInBrowser() {
 
   QList<QUrl> urls;
-  for (const QModelIndex &proxy_index : ui_->playlist->view()->selectionModel()->selectedRows()) {
+  const QModelIndexList proxy_indexes = ui_->playlist->view()->selectionModel()->selectedRows();
+  for (const QModelIndex &proxy_index : proxy_indexes) {
     const QModelIndex source_index = app_->playlist_manager()->current()->filter()->mapToSource(proxy_index);
     if (!source_index.isValid()) continue;
     urls << QUrl(source_index.sibling(source_index.row(), static_cast<int>(Playlist::Column::Filename)).data().toString());
@@ -2788,7 +2737,8 @@ void MainWindow::PlaylistOpenInBrowser() {
 void MainWindow::PlaylistCopyUrl() {
 
   QList<QUrl> urls;
-  for (const QModelIndex &proxy_index : ui_->playlist->view()->selectionModel()->selectedRows()) {
+  const QModelIndexList proxy_indexes = ui_->playlist->view()->selectionModel()->selectedRows();
+  for (const QModelIndex &proxy_index : proxy_indexes) {
     const QModelIndex source_index = app_->playlist_manager()->current()->filter()->mapToSource(proxy_index);
     if (!source_index.isValid()) continue;
     PlaylistItemPtr item = app_->playlist_manager()->current()->item_at(source_index.row());
@@ -2819,7 +2769,7 @@ void MainWindow::PlaylistQueue() {
 
 void MainWindow::PlaylistQueuePlayNext() {
 
-  QModelIndexList selected_rows = ui_->playlist->view()->selectionModel()->selectedRows();
+  const QModelIndexList selected_rows = ui_->playlist->view()->selectionModel()->selectedRows();
   QModelIndexList indexes;
   indexes.reserve(selected_rows.count());
   for (const QModelIndex &proxy_index : selected_rows) {
@@ -2849,7 +2799,8 @@ void MainWindow::PlaylistCopyToDevice() {
 
   SongList songs;
 
-  for (const QModelIndex &proxy_index : ui_->playlist->view()->selectionModel()->selectedRows()) {
+  const QModelIndexList proxy_indexes = ui_->playlist->view()->selectionModel()->selectedRows();
+  for (const QModelIndex &proxy_index : proxy_indexes) {
     const QModelIndex source_index = app_->playlist_manager()->current()->filter()->mapToSource(proxy_index);
     if (!source_index.isValid()) continue;
     PlaylistItemPtr item = app_->playlist_manager()->current()->item_at(source_index.row());
@@ -2964,7 +2915,7 @@ void MainWindow::CheckFullRescanRevisions() {
   int from = app_->database()->startup_schema_version();
   int to = app_->database()->current_schema_version();
 
-  // if we're restoring DB from scratch or nothing has changed, do nothing
+  // If we're restoring DB from scratch or nothing has changed, do nothing
   if (from == 0 || from == to) {
     return;
   }
@@ -2978,7 +2929,7 @@ void MainWindow::CheckFullRescanRevisions() {
     }
   }
 
-  // if we have any...
+  // If we have any...
   if (!reasons.isEmpty()) {
     QString message = tr("The version of Strawberry you've just updated to requires a full collection rescan because of the new features listed below:") + QStringLiteral("<ul>");
     for (const QString &reason : reasons) {
@@ -3050,7 +3001,8 @@ void MainWindow::AutoCompleteTags() {
 
   // Get the selected songs and start fetching tags for them
   SongList songs;
-  for (const QModelIndex &proxy_index : ui_->playlist->view()->selectionModel()->selectedRows()) {
+  const QModelIndexList proxy_indexes = ui_->playlist->view()->selectionModel()->selectedRows();
+  for (const QModelIndex &proxy_index : proxy_indexes) {
     const QModelIndex source_index = app_->playlist_manager()->current()->filter()->mapToSource(proxy_index);
     if (!source_index.isValid()) continue;
     PlaylistItemPtr item(app_->playlist_manager()->current()->item_at(source_index.row()));
@@ -3075,7 +3027,7 @@ void MainWindow::AutoCompleteTags() {
 
 void MainWindow::AutoCompleteTagsAccepted() {
 
-  for (PlaylistItemPtr item : autocomplete_tag_items_) {
+  for (PlaylistItemPtr item : std::as_const(autocomplete_tag_items_)) {
     item->Reload();
   }
   autocomplete_tag_items_.clear();
@@ -3180,7 +3132,7 @@ void MainWindow::AlbumCoverLoaded(const Song &song, const AlbumCoverLoaderResult
   song_ = song;
   album_cover_ = result.album_cover;
 
-  emit AlbumCoverReady(song, result.album_cover.image);
+  Q_EMIT AlbumCoverReady(song, result.album_cover.image);
 
   const bool enable_change_art = song.is_collection_song() && !song.effective_albumartist().isEmpty() && !song.album().isEmpty();
   album_cover_choice_controller_->show_cover_action()->setEnabled(result.success && result.type != AlbumCoverLoaderResult::Type::Unset);
@@ -3208,7 +3160,7 @@ void MainWindow::GetCoverAutomatically() {
                       !song_.effective_album().isEmpty();
 
   if (search) {
-    emit SearchCoverInProgress();
+    Q_EMIT SearchCoverInProgress();
     album_cover_choice_controller_->SearchCoverAutomatically(song_);
   }
 
@@ -3267,7 +3219,8 @@ void MainWindow::PlaylistDelete() {
   SongList selected_songs;
   QStringList files;
   bool is_current_item = false;
-  for (const QModelIndex &proxy_idx : ui_->playlist->view()->selectionModel()->selectedRows()) {
+  const QModelIndexList proxy_indexes = ui_->playlist->view()->selectionModel()->selectedRows();
+  for (const QModelIndex &proxy_idx : proxy_indexes) {
     QModelIndex source_idx = app_->playlist_manager()->current()->filter()->mapToSource(proxy_idx);
     PlaylistItemPtr item = app_->playlist_manager()->current()->item_at(source_idx.row());
     if (!item || !item->Metadata().url().isLocalFile()) continue;

src/core/mainwindow.h

@@ -131,7 +131,7 @@ class MainWindow : public QMainWindow, public PlatformInterface {
   void Activate() override;
   bool LoadUrl(const QString &url) override;
 
- signals:
+ Q_SIGNALS:
   void AlbumCoverReady(const Song &song, const QImage &image);
   void SearchCoverInProgress();
   // Signals that stop playing after track was toggled.
@@ -139,7 +139,7 @@ class MainWindow : public QMainWindow, public PlatformInterface {
 
   void AuthorizationUrlReceived(const QUrl &url);
 
- private slots:
+ private Q_SLOTS:
   void FilePathChanged(const QString &path);
 
   void EngineChanged(const EngineBase::Type enginetype);
@@ -238,9 +238,6 @@ class MainWindow : public QMainWindow, public PlatformInterface {
   void ToggleSidebar(const bool checked);
   void ToggleSearchCoverAuto(const bool checked);
   void SaveGeometry();
-  void SavePlaybackStatus();
-  void LoadPlaybackStatus();
-  void ResumePlayback();
 
   void Exit();
   void DoExit();
@@ -274,7 +271,7 @@ class MainWindow : public QMainWindow, public PlatformInterface {
 
   void DeleteFilesFinished(const SongList &songs_with_errors);
 
- public slots:
+ public Q_SLOTS:
   void CommandlineOptionsReceived(const QByteArray &string_options);
   void Raise();
 

src/core/mainwindow.ui

@@ -37,7 +37,7 @@
     <item>
      <widget class="QSplitter" name="splitter">
       <property name="orientation">
-       <enum>Qt::Horizontal</enum>
+       <enum>Qt::Orientation::Horizontal</enum>
       </property>
       <widget class="QWidget" name="sidebar_layout">
        <layout class="QVBoxLayout" name="layout_left">
@@ -77,7 +77,7 @@
           <item>
            <widget class="Line" name="line_6">
             <property name="orientation">
-             <enum>Qt::Vertical</enum>
+             <enum>Qt::Orientation::Vertical</enum>
             </property>
            </widget>
           </item>
@@ -102,7 +102,7 @@
              <item>
               <widget class="QFrame" name="player_controls">
                <property name="frameShape">
-                <enum>QFrame::NoFrame</enum>
+                <enum>QFrame::Shape::NoFrame</enum>
                </property>
                <layout class="QHBoxLayout" name="layout_player_controls">
                 <property name="spacing">
@@ -167,7 +167,7 @@
                    </size>
                   </property>
                   <property name="popupMode">
-                   <enum>QToolButton::MenuButtonPopup</enum>
+                   <enum>QToolButton::ToolButtonPopupMode::MenuButtonPopup</enum>
                   </property>
                   <property name="autoRaise">
                    <bool>true</bool>
@@ -211,7 +211,7 @@
                    <item>
                     <widget class="Line" name="line_love">
                      <property name="orientation">
-                      <enum>Qt::Vertical</enum>
+                      <enum>Qt::Orientation::Vertical</enum>
                      </property>
                     </widget>
                    </item>
@@ -237,7 +237,7 @@
                 <item>
                  <widget class="Line" name="line_buttons">
                   <property name="orientation">
-                   <enum>Qt::Vertical</enum>
+                   <enum>Qt::Orientation::Vertical</enum>
                   </property>
                  </widget>
                 </item>
@@ -260,10 +260,10 @@
                 <item>
                  <spacer name="horizontalSpacer">
                   <property name="orientation">
-                   <enum>Qt::Horizontal</enum>
+                   <enum>Qt::Orientation::Horizontal</enum>
                   </property>
                   <property name="sizeType">
-                   <enum>QSizePolicy::Expanding</enum>
+                   <enum>QSizePolicy::Policy::Expanding</enum>
                   </property>
                   <property name="sizeHint" stdset="0">
                    <size>
@@ -276,7 +276,7 @@
                 <item>
                  <widget class="Line" name="line_volume">
                   <property name="orientation">
-                   <enum>Qt::Vertical</enum>
+                   <enum>Qt::Orientation::Vertical</enum>
                   </property>
                  </widget>
                 </item>
@@ -292,7 +292,7 @@
                    <number>100</number>
                   </property>
                   <property name="orientation">
-                   <enum>Qt::Horizontal</enum>
+                   <enum>Qt::Orientation::Horizontal</enum>
                   </property>
                  </widget>
                 </item>
@@ -326,7 +326,7 @@
                 <item>
                  <widget class="Line" name="status_bar_line">
                   <property name="orientation">
-                   <enum>Qt::Horizontal</enum>
+                   <enum>Qt::Orientation::Horizontal</enum>
                   </property>
                  </widget>
                 </item>
@@ -380,7 +380,7 @@
                        <item>
                         <widget class="QLabel" name="playlist_summary">
                          <property name="alignment">
-                          <set>Qt::AlignRight|Qt::AlignTrailing|Qt::AlignVCenter</set>
+                          <set>Qt::AlignmentFlag::AlignRight|Qt::AlignmentFlag::AlignTrailing|Qt::AlignmentFlag::AlignVCenter</set>
                          </property>
                         </widget>
                        </item>
@@ -391,7 +391,7 @@
                    <item>
                     <widget class="Line" name="line_5">
                      <property name="orientation">
-                      <enum>Qt::Vertical</enum>
+                      <enum>Qt::Orientation::Vertical</enum>
                      </property>
                     </widget>
                    </item>
@@ -401,7 +401,7 @@
                    <item>
                     <widget class="Line" name="line_2">
                      <property name="orientation">
-                      <enum>Qt::Vertical</enum>
+                      <enum>Qt::Orientation::Vertical</enum>
                      </property>
                     </widget>
                    </item>
@@ -524,7 +524,7 @@
     <addaction name="separator"/>
     <addaction name="action_update_collection"/>
     <addaction name="action_full_collection_scan"/>
-    <addaction name="action_abort_collection_scan"/>
+    <addaction name="action_stop_collection_scan"/>
     <addaction name="separator"/>
     <addaction name="action_settings"/>
     <addaction name="action_import_data_from_last_fm"/>
@@ -580,7 +580,7 @@
     <string>Ctrl+Q</string>
    </property>
    <property name="menuRole">
-    <enum>QAction::QuitRole</enum>
+    <enum>QAction::MenuRole::QuitRole</enum>
    </property>
   </action>
   <action name="action_stop_after_this_track">
@@ -644,7 +644,7 @@
     <string>Ctrl+P</string>
    </property>
    <property name="menuRole">
-    <enum>QAction::PreferencesRole</enum>
+    <enum>QAction::MenuRole::PreferencesRole</enum>
    </property>
   </action>
   <action name="action_about_strawberry">
@@ -659,7 +659,7 @@
     <string>F1</string>
    </property>
    <property name="menuRole">
-    <enum>QAction::AboutRole</enum>
+    <enum>QAction::MenuRole::AboutRole</enum>
    </property>
   </action>
   <action name="action_shuffle">
@@ -785,7 +785,7 @@
     <string>About &amp;Qt</string>
    </property>
    <property name="menuRole">
-    <enum>QAction::AboutQtRole</enum>
+    <enum>QAction::MenuRole::AboutQtRole</enum>
    </property>
   </action>
   <action name="action_mute">
@@ -804,9 +804,12 @@
     <string>&amp;Do a full collection rescan</string>
    </property>
   </action>
-  <action name="action_abort_collection_scan">
+  <action name="action_stop_collection_scan">
    <property name="text">
-    <string>Abort collection scan</string>
+    <string>Stop collection scan</string>
+   </property>
+   <property name="toolTip">
+    <string>Stop collection scan</string>
    </property>
   </action>
   <action name="action_auto_complete_tags">

src/core/mergedproxymodel.cpp

@@ -232,7 +232,7 @@ void MergedProxyModel::SubModelResetSlot() {
     endInsertRows();
   }
 
-  emit SubModelReset(proxy_parent, submodel);
+  Q_EMIT SubModelReset(proxy_parent, submodel);
 
 }
 
@@ -516,7 +516,7 @@ QAbstractItemModel *MergedProxyModel::GetModel(const QModelIndex &source_index)
 }
 
 void MergedProxyModel::DataChanged(const QModelIndex &top_left, const QModelIndex &bottom_right) {
-  emit dataChanged(mapFromSource(top_left), mapFromSource(bottom_right));
+  Q_EMIT dataChanged(mapFromSource(top_left), mapFromSource(bottom_right));
 }
 
 void MergedProxyModel::LayoutAboutToBeChanged() {
@@ -535,8 +535,8 @@ void MergedProxyModel::LayoutChanged() {
   for (QAbstractItemModel *model : models) {
     if (!old_merge_points_.contains(model)) continue;
 
-    const int old_row = old_merge_points_[model].row();
+    const int old_row = old_merge_points_.value(model).row();
-    const int new_row = merge_points_[model].row();
+    const int new_row = merge_points_.value(model).row();
 
     if (old_row != new_row) {
       beginResetModel();

src/core/mergedproxymodel.h

@@ -85,10 +85,10 @@ class MergedProxyModel : public QAbstractProxyModel {
   QModelIndexList mapFromSource(const QModelIndexList &source_indexes) const;
   QModelIndexList mapToSource(const QModelIndexList &proxy_indexes) const;
 
- signals:
+ Q_SIGNALS:
   void SubModelReset(const QModelIndex root, QAbstractItemModel *model);
 
- private slots:
+ private Q_SLOTS:
   void SourceModelReset();
   void SubModelAboutToBeReset();
   void SubModelResetSlot();

src/core/metatypes.cpp

@@ -81,6 +81,8 @@
 #include "smartplaylists/smartplaylistsearchterm.h"
 #include "smartplaylists/smartplaylistsitem.h"
 
+#include "lyrics/lyricssearchresult.h"
+
 void RegisterMetaTypes() {
 
   qRegisterMetaType<const char*>("const char*");
@@ -167,4 +169,6 @@ void RegisterMetaTypes() {
   qRegisterMetaType<SmartPlaylistSearchTerm::DateType>("SmartPlaylistSearchTerm::DateType");
   qRegisterMetaType<SmartPlaylistsItem::Type>("SmartPlaylistsItem::Type");
 
+  qRegisterMetaType<LyricsSearchResults>("LyricsSearchResults");
+
 }

src/core/mimedata.cpp

@@ -0,0 +1,44 @@
+/*
+ * Strawberry Music Player
+ * This file was part of Clementine.
+ * Copyright 2010, David Sansome <me@davidsansome.com>
+ * Copyright 2018-2024, Jonas Kvinge <jonas@jkvinge.net>
+ *
+ * Strawberry is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * Strawberry is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with Strawberry.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
+
+#include "config.h"
+
+#include <QString>
+
+#include "mimedata.h"
+
+MimeData::MimeData(const bool clear, const bool play_now, const bool enqueue, const bool enqueue_next_now, const bool open_in_new_playlist, QObject *parent)
+      : override_user_settings_(false),
+        clear_first_(clear),
+        play_now_(play_now),
+        enqueue_now_(enqueue),
+        enqueue_next_now_(enqueue_next_now),
+        open_in_new_playlist_(open_in_new_playlist),
+        name_for_new_playlist_(QString()),
+        from_doubleclick_(false) {
+
+  Q_UNUSED(parent);
+
+}
+
+QString MimeData::get_name_for_new_playlist() const {
+  return name_for_new_playlist_.isEmpty() ? tr("Playlist") : name_for_new_playlist_;
+}

src/core/mimedata.h

@@ -2,6 +2,7 @@
  * Strawberry Music Player
  * This file was part of Clementine.
  * Copyright 2010, David Sansome <me@davidsansome.com>
+ * Copyright 2018-2024, Jonas Kvinge <jonas@jkvinge.net>
  *
  * Strawberry is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
@@ -21,9 +22,6 @@
 #ifndef MIMEDATA_H
 #define MIMEDATA_H
 
-#include "config.h"
-
-#include <QObject>
 #include <QMimeData>
 #include <QString>
 
@@ -31,15 +29,7 @@ class MimeData : public QMimeData {
   Q_OBJECT
 
  public:
-  explicit MimeData(const bool clear = false, const bool play_now = false, const bool enqueue = false, const bool enqueue_next_now = false, const bool open_in_new_playlist = false, QObject* = nullptr)
+  explicit MimeData(const bool clear = false, const bool play_now = false, const bool enqueue = false, const bool enqueue_next_now = false, const bool open_in_new_playlist = false, QObject *parent = nullptr);
-      : override_user_settings_(false),
-        clear_first_(clear),
-        play_now_(play_now),
-        enqueue_now_(enqueue),
-        enqueue_next_now_(enqueue_next_now),
-        open_in_new_playlist_(open_in_new_playlist),
-        name_for_new_playlist_(QString()),
-        from_doubleclick_(false) {}
 
   // If this is set then MainWindow will not touch any of the other flags.
   bool override_user_settings_;
@@ -69,9 +59,7 @@ class MimeData : public QMimeData {
 
   // Returns a pretty name for a playlist containing songs described by this MimeData object.
   // By pretty name we mean the value of 'name_for_new_playlist_' or generic "Playlist" string if the 'name_for_new_playlist_' attribute is empty.
-  QString get_name_for_new_playlist() {
+  QString get_name_for_new_playlist() const;
-    return name_for_new_playlist_.isEmpty() ? tr("Playlist") : name_for_new_playlist_;
-  }
 };
 
 #endif  // MIMEDATA_H

src/core/mpris2.cpp

@@ -22,6 +22,7 @@
 #include "config.h"
 
 #include <algorithm>
+#include <utility>
 #include <cmath>
 
 #include <QApplication>
@@ -141,7 +142,7 @@ Mpris2::Mpris2(Application *app, QObject *parent)
     data_dirs.append(QStringLiteral("/usr/share"));
   }
 
-  for (const QString &data_dir : data_dirs) {
+  for (const QString &data_dir : std::as_const(data_dirs)) {
     const QString desktopfilepath = QStringLiteral("%1/applications/%2.desktop").arg(data_dir, QGuiApplication::desktopFileName());
     if (QFile::exists(desktopfilepath)) {
       desktopfilepath_ = desktopfilepath;
@@ -240,7 +241,7 @@ QString Mpris2::DesktopEntryAbsolutePath() const {
 
 }
 
-QString Mpris2::DesktopEntry() const { return QGuiApplication::desktopFileName() + QLatin1String(".desktop"); }
+QString Mpris2::DesktopEntry() const { return QGuiApplication::desktopFileName(); }
 
 QStringList Mpris2::SupportedUriSchemes() const {
 
@@ -288,7 +289,7 @@ QStringList Mpris2::SupportedMimeTypes() const {
 
 }
 
-void Mpris2::Raise() { emit RaiseMainWindow(); }
+void Mpris2::Raise() { Q_EMIT RaiseMainWindow(); }
 
 void Mpris2::Quit() { QCoreApplication::quit(); }
 
@@ -618,7 +619,7 @@ MprisPlaylistList Mpris2::GetPlaylists(quint32 index, quint32 max_count, const Q
 
   Q_UNUSED(order);
 
-  QList<Playlist*> playlists = app_->playlist_manager()->GetAllPlaylists();
+  const QList<Playlist*> playlists = app_->playlist_manager()->GetAllPlaylists();
   MprisPlaylistList ret;
   ret.reserve(playlists.count());
   for (Playlist *p : playlists) {
@@ -642,7 +643,7 @@ void Mpris2::PlaylistChangedSlot(Playlist *playlist) {
   mpris_playlist.id = MakePlaylistPath(playlist->id());
   mpris_playlist.name = app_->playlist_manager()->GetPlaylistName(playlist->id());
 
-  emit PlaylistChanged(mpris_playlist);
+  Q_EMIT PlaylistChanged(mpris_playlist);
 
 }
 

src/core/mpris2.h

@@ -33,9 +33,8 @@
 #include <QVariant>
 #include <QString>
 #include <QStringList>
-#include <QtDBus>
+#include <QDBusObjectPath>
 #include <QDBusArgument>
-#include <qdbusextratypes.h>
 #include <QJsonObject>
 
 #include "engine/enginebase.h"
@@ -191,7 +190,7 @@ class Mpris2 : public QObject {
   void ActivatePlaylist(const QDBusObjectPath &playlist_id);
   MprisPlaylistList GetPlaylists(quint32 index, quint32 max_count, const QString &order, bool reverse_order);
 
- signals:
+ Q_SIGNALS:
   // Player
   void Seeked(const qint64 position);
 
@@ -206,7 +205,7 @@ class Mpris2 : public QObject {
   // Playlist
   void PlaylistChanged(const MprisPlaylist &playlist);
 
- private slots:
+ private Q_SLOTS:
   void AlbumCoverLoaded(const Song &song, const AlbumCoverLoaderResult &result = AlbumCoverLoaderResult());
   void EngineStateChanged(EngineBase::State newState);
   void VolumeChanged();

src/core/mutex_protected.h

@@ -0,0 +1,65 @@
+/*
+ * Strawberry Music Player
+ * Copyright 2024, Jonas Kvinge <jonas@jkvinge.net>
+ *
+ * Strawberry is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * Strawberry is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with Strawberry.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
+
+#ifndef MUTEX_PROTECTED_H
+#define MUTEX_PROTECTED_H
+
+#include <boost/noncopyable.hpp>
+
+#include <QMutex>
+#include <QMutexLocker>
+
+template<typename T>
+class mutex_protected : public boost::noncopyable {
+ public:
+  mutex_protected(const mutex_protected &value) : value_(value.value()) {}
+  mutex_protected(const T value) : value_(value) {}
+  ~mutex_protected() {}
+
+  T value() const {
+    QMutexLocker l(&mutex_);
+    return value_;
+  }
+
+  T operator==(const mutex_protected &value) const {
+    QMutexLocker l(&mutex_);
+    return value == value_;
+  }
+
+  T operator==(const T value) const {
+    QMutexLocker l(&mutex_);
+    return value == value_;
+  }
+
+  void operator=(const mutex_protected &value) {
+    QMutexLocker l(&mutex_);
+    value_ = value.value();
+  }
+
+  void operator=(const T value) {
+    QMutexLocker l(&mutex_);
+    value_ = value;
+  }
+
+ private:
+  T value_;
+  mutable QMutex mutex_;
+};
+
+#endif  // MUTEX_PROTECTED_H

src/core/networktimeouts.h

@@ -42,7 +42,7 @@ class NetworkTimeouts : public QObject {
  protected:
   void timerEvent(QTimerEvent *e) override;
 
- private slots:
+ private Q_SLOTS:
   void ReplyFinished();
 
  private:

src/core/player.cpp

@@ -85,6 +85,8 @@ Player::Player(Application *app, QObject *parent)
       analyzer_(nullptr),
       equalizer_(nullptr),
       timer_save_volume_(new QTimer(this)),
+      playlists_loaded_(false),
+      play_requested_(false),
       stream_change_type_(EngineBase::TrackChangeType::First),
       autoscroll_(Playlist::AutoScroll::Maybe),
       last_state_(EngineBase::State::Empty),
@@ -99,6 +101,8 @@ Player::Player(Application *app, QObject *parent)
       volume_increment_(5),
       play_offset_nanosec_(0) {
 
+  setObjectName(QLatin1String(metaObject()->className()));
+
   Settings s;
   s.beginGroup(BackendSettingsPage::kSettingsGroup);
   EngineBase::Type enginetype = EngineBase::TypeFromName(s.value("engine", EngineBase::Name(EngineBase::Type::GStreamer)).toString().toLower());
@@ -156,7 +160,7 @@ EngineBase::Type Player::CreateEngine(EngineBase::Type enginetype) {
     qFatal("Failed to create engine!");
   }
 
-  emit EngineChanged(use_enginetype);
+  Q_EMIT EngineChanged(use_enginetype);
 
   return use_enginetype;
 
@@ -245,6 +249,80 @@ void Player::SaveVolume() {
 
 }
 
+void Player::SavePlaybackStatus() {
+
+  Settings s;
+
+  s.beginGroup(kSettingsGroup);
+  s.setValue("playback_state", static_cast<int>(app_->player()->GetState()));
+  if (app_->player()->GetState() == EngineBase::State::Playing || app_->player()->GetState() == EngineBase::State::Paused) {
+    s.setValue("playback_playlist", app_->playlist_manager()->active()->id());
+    s.setValue("playback_position", app_->player()->engine()->position_nanosec() / kNsecPerSec);
+  }
+  else {
+    s.setValue("playback_playlist", -1);
+    s.setValue("playback_position", 0);
+  }
+  s.endGroup();
+
+}
+
+void Player::PlaylistsLoaded() {
+
+  playlists_loaded_ = true;
+
+  Settings s;
+
+  s.beginGroup(BehaviourSettingsPage::kSettingsGroup);
+  const bool resume_playback = s.value("resumeplayback", false).toBool();
+  s.endGroup();
+
+  s.beginGroup(Player::kSettingsGroup);
+  const EngineBase::State playback_state = static_cast<EngineBase::State>(s.value("playback_state", static_cast<int>(EngineBase::State::Empty)).toInt());
+  s.endGroup();
+
+  if (resume_playback && (playback_state == EngineBase::State::Playing || playback_state == EngineBase::State::Paused)) {
+    ResumePlayback();
+  }
+  else if (play_requested_) {
+    Play();
+  }
+
+  play_requested_ = false;
+
+}
+
+void Player::ResumePlayback() {
+
+  qLog(Debug) << "Resuming playback";
+
+  Settings s;
+  s.beginGroup(kSettingsGroup);
+  const EngineBase::State playback_state = static_cast<EngineBase::State>(s.value("playback_state", static_cast<int>(EngineBase::State::Empty)).toInt());
+  const int playback_playlist = s.value("playback_playlist", -1).toInt();
+  const int playback_position = s.value("playback_position", 0).toInt();
+  s.endGroup();
+
+  if (playback_playlist == app_->playlist_manager()->current()->id()) {
+    // Set active to current to resume playback on correct playlist.
+    app_->playlist_manager()->SetActiveToCurrent();
+    if (playback_state == EngineBase::State::Playing) {
+      Play(playback_position * kNsecPerSec);
+    }
+    else if (playback_state == EngineBase::State::Paused) {
+      PlayWithPause(playback_position * kNsecPerSec);
+    }
+  }
+
+  // Reset saved playback status so we don't resume again from the same position.
+  s.beginGroup(kSettingsGroup);
+  s.setValue("playback_state", static_cast<int>(EngineBase::State::Empty));
+  s.setValue("playback_playlist", -1);
+  s.setValue("playback_position", 0);
+  s.endGroup();
+
+}
+
 void Player::HandleLoadResult(const UrlHandler::LoadResult &result) {
 
   if (loading_async_.contains(result.media_url_)) {
@@ -285,7 +363,7 @@ void Player::HandleLoadResult(const UrlHandler::LoadResult &result) {
       if (is_current) {
         InvalidSongRequested(result.media_url_);
       }
-      emit Error(result.error_);
+      Q_EMIT Error(result.error_);
       break;
 
     case UrlHandler::LoadResult::Type::NoMoreTracks:
@@ -354,7 +432,7 @@ void Player::HandleLoadResult(const UrlHandler::LoadResult &result) {
 
       if (is_current) {
         qLog(Debug) << "Playing song" << current_item->Metadata().title() << result.stream_url_ << "position" << play_offset_nanosec_;
-        engine_->Play(result.media_url_, result.stream_url_, stream_change_type_, song.has_cue(), song.beginning_nanosec(), song.end_nanosec(), play_offset_nanosec_, song.ebur128_integrated_loudness_lufs());
+        engine_->Play(result.media_url_, result.stream_url_, pause_, stream_change_type_, song.has_cue(), song.beginning_nanosec(), song.end_nanosec(), play_offset_nanosec_, song.ebur128_integrated_loudness_lufs());
         current_item_ = current_item;
         play_offset_nanosec_ = 0;
       }
@@ -421,12 +499,12 @@ void Player::NextItem(const EngineBase::TrackChangeFlags change, const Playlist:
   if (i == -1) {
     app_->playlist_manager()->active()->set_current_row(i);
     app_->playlist_manager()->active()->reset_last_played();
-    emit PlaylistFinished();
+    Q_EMIT PlaylistFinished();
     Stop();
     return;
   }
 
-  PlayAt(i, 0, change, autoscroll, false, true);
+  PlayAt(i, false, 0, change, autoscroll, false, true);
 
 }
 
@@ -461,11 +539,10 @@ void Player::PlayPlaylistInternal(const EngineBase::TrackChangeFlags change, con
   if (i == -1) i = app_->playlist_manager()->active()->last_played_row();
   if (i == -1) i = 0;
 
-  PlayAt(i, 0, change, autoscroll, true);
+  PlayAt(i, false, 0, change, autoscroll, true);
 
 }
 
-
 bool Player::HandleStopAfter(const Playlist::AutoScroll autoscroll) {
 
   if (app_->playlist_manager()->active()->stop_after_current()) {
@@ -502,7 +579,7 @@ void Player::PlayPause(const quint64 offset_nanosec, const Playlist::AutoScroll
   switch (engine_->state()) {
     case EngineBase::State::Paused:
       UnPause();
-      emit Resumed();
+      Q_EMIT Resumed();
       break;
 
     case EngineBase::State::Playing:{
@@ -527,7 +604,7 @@ void Player::PlayPause(const quint64 offset_nanosec, const Playlist::AutoScroll
       int i = app_->playlist_manager()->active()->current_row();
       if (i == -1) i = app_->playlist_manager()->active()->last_played_row();
       if (i == -1) i = 0;
-      PlayAt(i, offset_nanosec, EngineBase::TrackChangeType::First, autoscroll, true);
+      PlayAt(i, false, offset_nanosec, EngineBase::TrackChangeType::First, autoscroll, true);
       break;
     }
   }
@@ -543,7 +620,8 @@ void Player::UnPause() {
       if (time >= 30) {  // Stream URL might be expired.
         qLog(Debug) << "Re-requesting stream URL for" << song.url();
         play_offset_nanosec_ = engine_->position_nanosec();
-        HandleLoadResult(url_handlers_[song.url().scheme()]->StartLoading(song.url()));
+        UrlHandler *url_handler = url_handlers_.value(song.url().scheme());
+        HandleLoadResult(url_handler->StartLoading(song.url()));
         return;
       }
     }
@@ -606,7 +684,7 @@ void Player::PreviousItem(const EngineBase::TrackChangeFlags change) {
     QDateTime now = QDateTime::currentDateTime();
     if (last_pressed_previous_.isValid() && last_pressed_previous_.secsTo(now) >= 2) {
       last_pressed_previous_ = now;
-      PlayAt(app_->playlist_manager()->active()->current_row(), 0, change, Playlist::AutoScroll::Always, false, true);
+      PlayAt(app_->playlist_manager()->active()->current_row(), false, 0, change, Playlist::AutoScroll::Always, false, true);
       return;
     }
     last_pressed_previous_ = now;
@@ -616,11 +694,11 @@ void Player::PreviousItem(const EngineBase::TrackChangeFlags change) {
   app_->playlist_manager()->active()->set_current_row(i, Playlist::AutoScroll::Always, false);
   if (i == -1) {
     Stop();
-    PlayAt(i, 0, change, Playlist::AutoScroll::Always, true);
+    PlayAt(i, false, 0, change, Playlist::AutoScroll::Always, true);
     return;
   }
 
-  PlayAt(i, 0, change, Playlist::AutoScroll::Always, false);
+  PlayAt(i, false, 0, change, Playlist::AutoScroll::Always, false);
 
 }
 
@@ -637,21 +715,21 @@ void Player::EngineStateChanged(const EngineBase::State state) {
     case EngineBase::State::Paused:
       pause_time_ = QDateTime::currentDateTime();
       play_offset_nanosec_ = engine_->position_nanosec();
-      emit Paused();
+      Q_EMIT Paused();
       break;
     case EngineBase::State::Playing:
       pause_time_ = QDateTime();
       play_offset_nanosec_ = 0;
-      emit Playing();
+      Q_EMIT Playing();
       break;
     case EngineBase::State::Error:
-      emit Error();
+      Q_EMIT Error();
       [[fallthrough]];
     case EngineBase::State::Empty:
     case EngineBase::State::Idle:
       pause_time_ = QDateTime();
       play_offset_nanosec_ = 0;
-      emit Stopped();
+      Q_EMIT Stopped();
       break;
   }
 
@@ -671,7 +749,7 @@ void Player::SetVolumeFromSlider(const int value) {
   if (volume != volume_) {
     volume_ = volume;
     engine_->SetVolume(volume);
-    emit VolumeChanged(volume);
+    Q_EMIT VolumeChanged(volume);
     timer_save_volume_->start();
   }
 
@@ -682,7 +760,7 @@ void Player::SetVolumeFromEngine(const uint volume) {
   const uint new_volume = qBound(0U, volume, 100U);
   if (new_volume != volume_) {
     volume_ = new_volume;
-    emit VolumeChanged(new_volume);
+    Q_EMIT VolumeChanged(new_volume);
     timer_save_volume_->start();
   }
 
@@ -694,7 +772,7 @@ void Player::SetVolume(const uint volume) {
   if (new_volume != volume_) {
     volume_ = new_volume;
     engine_->SetVolume(new_volume);
-    emit VolumeChanged(new_volume);
+    Q_EMIT VolumeChanged(new_volume);
     timer_save_volume_->start();
   }
 
@@ -718,13 +796,13 @@ void Player::VolumeDown() {
 
 }
 
-void Player::PlayAt(const int index, const quint64 offset_nanosec, EngineBase::TrackChangeFlags change, const Playlist::AutoScroll autoscroll, const bool reshuffle, const bool force_inform) {
+void Player::PlayAt(const int index, const bool pause, const quint64 offset_nanosec, EngineBase::TrackChangeFlags change, const Playlist::AutoScroll autoscroll, const bool reshuffle, const bool force_inform) {
 
-  pause_time_ = QDateTime();
+  pause_time_ = pause ? QDateTime::currentDateTime() : QDateTime();
   play_offset_nanosec_ = offset_nanosec;
 
   if (current_item_ && change & EngineBase::TrackChangeType::Manual && engine_->position_nanosec() != engine_->length_nanosec()) {
-    emit TrackSkipped(current_item_);
+    Q_EMIT TrackSkipped(current_item_);
   }
 
   if (current_item_ && app_->playlist_manager()->active()->has_item_at(index) && current_item_->Metadata().IsOnSameAlbum(app_->playlist_manager()->active()->item_at(index)->Metadata())) {
@@ -748,13 +826,15 @@ void Player::PlayAt(const int index, const quint64 offset_nanosec, EngineBase::T
       return;
     }
 
+    pause_ = pause;
     stream_change_type_ = change;
     autoscroll_ = autoscroll;
-    HandleLoadResult(url_handlers_[url.scheme()]->StartLoading(url));
+    UrlHandler *url_handler = url_handlers_.value(url.scheme());
+    HandleLoadResult(url_handler->StartLoading(url));
   }
   else {
     qLog(Debug) << "Playing song" << current_item_->Metadata().title() << url << "position" << offset_nanosec;
-    engine_->Play(current_item_->Url(), url, change, current_item_->Metadata().has_cue(), current_item_->effective_beginning_nanosec(), current_item_->effective_end_nanosec(), offset_nanosec, current_item_->effective_ebur128_integrated_loudness_lufs());
+    engine_->Play(current_item_->Url(), url, pause, change, current_item_->Metadata().has_cue(), current_item_->effective_beginning_nanosec(), current_item_->effective_end_nanosec(), offset_nanosec, current_item_->effective_ebur128_integrated_loudness_lufs());
   }
 
 }
@@ -781,7 +861,7 @@ void Player::SeekTo(const quint64 seconds) {
   qLog(Debug) << "Track seeked to" << nanosec << "ns - updating scrobble point";
   app_->playlist_manager()->active()->UpdateScrobblePoint(nanosec);
 
-  emit Seeked(nanosec / 1000);
+  Q_EMIT Seeked(nanosec / 1000);
 
   if (seconds == 0) {
     app_->playlist_manager()->active()->InformOfCurrentSongChange(false);
@@ -852,6 +932,11 @@ void Player::Pause() { engine_->Pause(); }
 
 void Player::Play(const quint64 offset_nanosec) {
 
+  if (!playlists_loaded_) {
+    play_requested_ = true;
+    return;
+  }
+
   switch (GetState()) {
     case EngineBase::State::Playing:
       SeekTo(offset_nanosec);
@@ -866,12 +951,25 @@ void Player::Play(const quint64 offset_nanosec) {
 
 }
 
+void Player::PlayWithPause(const quint64 offset_nanosec) {
+
+  pause_time_ = QDateTime();
+  play_offset_nanosec_ = offset_nanosec;
+  app_->playlist_manager()->SetActivePlaylist(app_->playlist_manager()->current_id());
+  if (app_->playlist_manager()->active()->rowCount() == 0) return;
+  int i = app_->playlist_manager()->active()->current_row();
+  if (i == -1) i = app_->playlist_manager()->active()->last_played_row();
+  if (i == -1) i = 0;
+  PlayAt(i, true, offset_nanosec, EngineBase::TrackChangeType::First, Playlist::AutoScroll::Always, true);
+
+}
+
 void Player::ShowOSD() {
-  if (current_item_) emit ForceShowOSD(current_item_->Metadata(), false);
+  if (current_item_) Q_EMIT ForceShowOSD(current_item_->Metadata(), false);
 }
 
 void Player::TogglePrettyOSD() {
-  if (current_item_) emit ForceShowOSD(current_item_->Metadata(), true);
+  if (current_item_) Q_EMIT ForceShowOSD(current_item_->Metadata(), true);
 }
 
 void Player::TrackAboutToEnd() {
@@ -909,10 +1007,11 @@ void Player::TrackAboutToEnd() {
   if (url_handlers_.contains(url.scheme())) {
     if (loading_async_.contains(url)) return;
     autoscroll_ = Playlist::AutoScroll::Maybe;
-    UrlHandler::LoadResult result = url_handlers_[url.scheme()]->StartLoading(url);
+    UrlHandler *url_handler = url_handlers_.value(url.scheme());
+    const UrlHandler::LoadResult result = url_handler->StartLoading(url);
     switch (result.type_) {
       case UrlHandler::LoadResult::Type::Error:
-        emit Error(result.error_);
+        Q_EMIT Error(result.error_);
         return;
       case UrlHandler::LoadResult::Type::NoMoreTracks:
         return;
@@ -945,12 +1044,12 @@ void Player::FatalError() {
 }
 
 void Player::ValidSongRequested(const QUrl &url) {
-  emit SongChangeRequestProcessed(url, true);
+  Q_EMIT SongChangeRequestProcessed(url, true);
 }
 
 void Player::InvalidSongRequested(const QUrl &url) {
 
-  if (greyout_) emit SongChangeRequestProcessed(url, false);
+  if (greyout_) Q_EMIT SongChangeRequestProcessed(url, false);
 
   if (!continue_on_error_) {
     FatalError();
@@ -1013,5 +1112,5 @@ void Player::UrlHandlerDestroyed(QObject *object) {
 }
 
 void Player::HandleAuthentication() {
-  emit Authenticated();
+  Q_EMIT Authenticated();
 }

src/core/player.h

@@ -64,13 +64,16 @@ class PlayerInterface : public QObject {
   virtual void RegisterUrlHandler(UrlHandler *handler) = 0;
   virtual void UnregisterUrlHandler(UrlHandler *handler) = 0;
 
- public slots:
+ public Q_SLOTS:
   virtual void ReloadSettings() = 0;
   virtual void LoadVolume() = 0;
   virtual void SaveVolume() = 0;
+  virtual void SavePlaybackStatus() = 0;
+
+  virtual void PlaylistsLoaded() = 0;
 
   // Manual track change to the specified track
-  virtual void PlayAt(const int index, const quint64 offset_nanosec, EngineBase::TrackChangeFlags change, const Playlist::AutoScroll autoscroll, const bool reshuffle, const bool force_inform = false) = 0;
+  virtual void PlayAt(const int index, const bool pause, const quint64 offset_nanosec, EngineBase::TrackChangeFlags change, const Playlist::AutoScroll autoscroll, const bool reshuffle, const bool force_inform = false) = 0;
 
   // If there's currently a song playing, pause it, otherwise play the track that was playing last, or the first one on the playlist
   virtual void PlayPause(const quint64 offset_nanosec = 0, const Playlist::AutoScroll autoscroll = Playlist::AutoScroll::Always) = 0;
@@ -98,10 +101,11 @@ class PlayerInterface : public QObject {
   virtual void Pause() = 0;
   virtual void Stop(const bool stop_after = false) = 0;
   virtual void Play(const quint64 offset_nanosec = 0) = 0;
+  virtual void PlayWithPause(const quint64 offset_nanosec) = 0;
   virtual void PlayHelper() = 0;
   virtual void ShowOSD() = 0;
 
- signals:
+ Q_SIGNALS:
   void Playing();
   void Paused();
   // Emitted only when playback is manually resumed
@@ -154,12 +158,14 @@ class Player : public PlayerInterface {
   void SetAnalyzer(AnalyzerContainer *analyzer) { analyzer_ = analyzer; }
   void SetEqualizer(SharedPtr<Equalizer> equalizer) { equalizer_ = equalizer; }
 
- public slots:
+ public Q_SLOTS:
   void ReloadSettings() override;
   void LoadVolume() override;
   void SaveVolume() override;
+  void SavePlaybackStatus() override;
+  void PlaylistsLoaded() override;
 
-  void PlayAt(const int index, const quint64 offset_nanosec, EngineBase::TrackChangeFlags change, const Playlist::AutoScroll autoscroll, const bool reshuffle, const bool force_inform = false) override;
+  void PlayAt(const int index, const bool pause, const quint64 offset_nanosec, EngineBase::TrackChangeFlags change, const Playlist::AutoScroll autoscroll, const bool reshuffle, const bool force_inform = false) override;
   void PlayPause(const quint64 offset_nanosec = 0, const Playlist::AutoScroll autoscroll = Playlist::AutoScroll::Always) override;
   void PlayPauseHelper() override { PlayPause(play_offset_nanosec_); }
   void RestartOrPrevious() override;
@@ -182,16 +188,17 @@ class Player : public PlayerInterface {
   void Stop(const bool stop_after = false) override;
   void StopAfterCurrent();
   void Play(const quint64 offset_nanosec = 0) override;
+  void PlayWithPause(const quint64 offset_nanosec) override;
   void PlayHelper() override { Play(); }
   void ShowOSD() override;
   void TogglePrettyOSD();
 
   void HandleAuthentication();
 
- signals:
+ Q_SIGNALS:
   void EngineChanged(const EngineBase::Type Type);
 
- private slots:
+ private Q_SLOTS:
   void EngineStateChanged(const EngineBase::State);
   void EngineMetadataReceived(const EngineMetadata &engine_metadata);
   void TrackAboutToEnd();
@@ -211,6 +218,8 @@ class Player : public PlayerInterface {
   void HandleLoadResult(const UrlHandler::LoadResult &result);
 
  private:
+  void ResumePlayback();
+
   // Returns true if we were supposed to stop after this track.
   bool HandleStopAfter(const Playlist::AutoScroll autoscroll);
 
@@ -226,8 +235,12 @@ class Player : public PlayerInterface {
   SharedPtr<Equalizer> equalizer_;
   QTimer *timer_save_volume_;
 
+  bool playlists_loaded_;
+  bool play_requested_;
+
   PlaylistItemPtr current_item_;
 
+  bool pause_;
   EngineBase::TrackChangeFlags stream_change_type_;
   Playlist::AutoScroll autoscroll_;
   EngineBase::State last_state_;

src/core/potranslator.cpp

@@ -0,0 +1,34 @@
+/*
+ * Strawberry Music Player
+ * This file was part of Clementine.
+ * Copyright 2010, David Sansome <me@davidsansome.com>
+ * Copyright 2018-2024, Jonas Kvinge <jonas@jkvinge.net>
+ *
+ * Strawberry is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * Strawberry is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with Strawberry.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
+
+#include <QString>
+
+#include "potranslator.h"
+
+PoTranslator::PoTranslator(QObject *parent) : QTranslator(parent) {}
+
+QString PoTranslator::translate(const char *context, const char *source_text, const char *disambiguation, const int n) const {
+
+  QString ret = QTranslator::translate(context, source_text, disambiguation, n);
+  if (!ret.isEmpty()) return ret;
+  return QTranslator::translate(nullptr, source_text, disambiguation, n);
+
+}

src/core/potranslator.h

@@ -2,6 +2,7 @@
  * Strawberry Music Player
  * This file was part of Clementine.
  * Copyright 2010, David Sansome <me@davidsansome.com>
+ * Copyright 2018-2024, Jonas Kvinge <jonas@jkvinge.net>
  *
  * Strawberry is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
@@ -22,6 +23,7 @@
 #define POTRANSLATOR_H
 
 #include <QTranslator>
+#include <QString>
 
 // We convert from .po files to .qm files, which loses context information.
 // This translator tries loading strings with an empty context if it can't find any others.
@@ -30,12 +32,8 @@ class PoTranslator : public QTranslator {
   Q_OBJECT
 
  public:
-  PoTranslator(QObject *parent = nullptr) : QTranslator(parent) {}
+  explicit PoTranslator(QObject *parent = nullptr);
-  QString translate(const char *context, const char *source_text, const char *disambiguation = nullptr, int n = -1) const override {
+  QString translate(const char *context, const char *source_text, const char *disambiguation = nullptr, int n = -1) const override;
-    QString ret = QTranslator::translate(context, source_text, disambiguation, n);
-    if (!ret.isEmpty()) return ret;
-    return QTranslator::translate(nullptr, source_text, disambiguation, n);
-  }
 };
 
 #endif  // POTRANSLATOR_H

src/core/qtsystemtrayicon.cpp

@@ -113,11 +113,11 @@ void SystemTrayIcon::Clicked(const QSystemTrayIcon::ActivationReason reason) {
   switch (reason) {
     case QSystemTrayIcon::DoubleClick:
     case QSystemTrayIcon::Trigger:
-      emit ShowHide();
+      Q_EMIT ShowHide();
       break;
 
     case QSystemTrayIcon::MiddleClick:
-      emit PlayPause();
+      Q_EMIT PlayPause();
       break;
 
     default:

src/core/qtsystemtrayicon.h

@@ -68,7 +68,7 @@ class SystemTrayIcon : public QSystemTrayIcon {
   QPixmap CreateIcon(const QPixmap &icon, const QPixmap &grey_icon);
   void UpdateIcon();
 
- signals:
+ Q_SIGNALS:
   void ChangeVolume(const int delta);
   void SeekForward();
   void SeekBackward();
@@ -77,7 +77,7 @@ class SystemTrayIcon : public QSystemTrayIcon {
   void ShowHide();
   void PlayPause();
 
- private slots:
+ private Q_SLOTS:
   void Clicked(const QSystemTrayIcon::ActivationReason);
 
  private: