Remove use of X11Extras and WinExtras

Modules are deprecated in Qt 6
See: QTBUG-83251

src/core/utilities.cpp

@@ -28,6 +28,7 @@
 #include <QtGlobal>
 #include <QApplication>
 #include <QCoreApplication>
+#include <QWindow>
 #include <QWidget>
 #include <QObject>
 #include <QIODevice>
@@ -51,6 +52,7 @@
 #include <QRegularExpressionMatch>
 #include <QSize>
 #include <QColor>
+#include <QRegion>
 #include <QMetaEnum>
 #include <QXmlStreamReader>
 #include <QSettings>
@@ -79,6 +81,7 @@
 #  include <sys/statvfs.h>
 #elif defined(Q_OS_WIN)
 #  include <windows.h>
+#  include <dwmapi.h>
 #endif
 
 #ifdef Q_OS_MACOS
@@ -952,6 +955,62 @@ QString MimeTypeFromData(const QByteArray &data) {
 
 }
 
+#ifdef Q_OS_WIN
+
+HRGN qt_RectToHRGN(const QRect &rc);
+HRGN qt_RectToHRGN(const QRect &rc) {
+  return CreateRectRgn(rc.left(), rc.top(), rc.right() + 1, rc.bottom() + 1);
+}
+
+HRGN toHRGN(const QRegion &region);
+HRGN toHRGN(const QRegion &region) {
+
+#if QT_VERSION >= QT_VERSION_CHECK(6, 0, 0)
+  return region.toHRGN();
+#else
+
+  const int rect_count = region.rectCount();
+  if (rect_count == 0) {
+    return nullptr;
+  }
+
+  HRGN resultRgn = nullptr;
+  QRegion::const_iterator rects = region.begin();
+  resultRgn = qt_RectToHRGN(rects[0]);
+  for (int i = 1 ; i < rect_count ; ++i) {
+    HRGN tmpRgn = qt_RectToHRGN(rects[i]);
+    const int res = CombineRgn(resultRgn, resultRgn, tmpRgn, RGN_OR);
+    if (res == ERROR) qWarning("Error combining HRGNs.");
+    DeleteObject(tmpRgn);
+  }
+
+  return resultRgn;
+
+#endif  // Qt 6
+
+}
+
+void enableBlurBehindWindow(QWindow *window, const QRegion &region) {
+
+  DWM_BLURBEHIND dwmbb = {0, 0, nullptr, 0};
+  dwmbb.dwFlags = DWM_BB_ENABLE;
+  dwmbb.fEnable = TRUE;
+  HRGN rgn = nullptr;
+  if (!region.isNull()) {
+    rgn = toHRGN(region);
+    if (rgn) {
+      dwmbb.hRgnBlur = rgn;
+      dwmbb.dwFlags |= DWM_BB_BLURREGION;
+    }
+  }
+  DwmEnableBlurBehindWindow(reinterpret_cast<HWND>(window->winId()), &dwmbb);
+  if (rgn) {
+    DeleteObject(rgn);
+  }
+}
+
+#endif  // Q_OS_WIN
+
 }  // namespace Utilities
 
 ScopedWCharArray::ScopedWCharArray(const QString &str)

src/core/utilities.h

@@ -27,6 +27,7 @@
 #include <memory>
 
 #include <QtGlobal>
+#include <QWindow>
 #include <QByteArray>
 #include <QFile>
 #include <QSize>
@@ -38,6 +39,7 @@
 #include <QStringList>
 #include <QUrl>
 #include <QColor>
+#include <QRegion>
 #include <QtEvents>
 
 #include "core/song.h"
@@ -146,6 +148,10 @@ bool IsColorDark(const QColor &color);
 QByteArray ReadDataFromFile(const QString &filename);
 QString MimeTypeFromData(const QByteArray &data);
 
+#ifdef Q_OS_WIN
+void enableBlurBehindWindow(QWindow *window, const QRegion &region);
+#endif
+
 }  // namespace
 
 class ScopedWCharArray {