smartplaylists: Move classes to own files

src/smartplaylists/smartplaylistsearchtermwidgetoverlay.cpp

@@ -0,0 +1,130 @@
+/*
+ * Strawberry Music Player
+ * This file was part of Clementine.
+ * Copyright 2010, David Sansome <me@davidsansome.com>
+ *
+ * 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 <QImage>
+#include <QPixmap>
+#include <QPainter>
+#include <QPalette>
+#include <QKeyEvent>
+#include <QMouseEvent>
+
+#include "core/iconloader.h"
+#include "smartplaylistsearchterm.h"
+#include "smartplaylistsearchtermwidget.h"
+#include "smartplaylistsearchtermwidgetoverlay.h"
+
+const int SmartPlaylistSearchTermWidgetOverlay::kSpacing = 6;
+const int SmartPlaylistSearchTermWidgetOverlay::kIconSize = 22;
+
+// Exported by QtGui
+void qt_blurImage(QPainter *p, QImage &blurImage, qreal radius, bool quality, bool alphaOnly, int transposed = 0);
+
+SmartPlaylistSearchTermWidgetOverlay::SmartPlaylistSearchTermWidgetOverlay(SmartPlaylistSearchTermWidget *parent)
+    : QWidget(parent),
+      parent_(parent),
+      opacity_(0.0),
+      text_(tr("Add search term")),
+      icon_(IconLoader::Load(QStringLiteral("list-add")).pixmap(kIconSize)) {
+
+  raise();
+  setFocusPolicy(Qt::TabFocus);
+
+}
+
+void SmartPlaylistSearchTermWidgetOverlay::Grab() {
+
+  hide();
+
+  // Take a "screenshot" of the window
+  QPixmap pixmap = parent_->grab();
+  QImage image = pixmap.toImage();
+
+  // Blur it
+  QImage blurred(image.size(), QImage::Format_ARGB32_Premultiplied);
+  blurred.fill(Qt::transparent);
+
+  QPainter blur_painter(&blurred);
+  qt_blurImage(&blur_painter, image, 10.0, true, false);
+  blur_painter.end();
+
+  pixmap_ = QPixmap::fromImage(blurred);
+
+  resize(parent_->size());
+  show();
+  update();
+
+}
+
+void SmartPlaylistSearchTermWidgetOverlay::SetOpacity(const float opacity) {
+
+  opacity_ = opacity;
+  update();
+
+}
+
+void SmartPlaylistSearchTermWidgetOverlay::paintEvent(QPaintEvent*) {
+
+  QPainter p(this);
+
+  // Background
+  p.fillRect(rect(), palette().window());
+
+  // Blurred parent widget
+  p.setOpacity(0.25 + opacity_ * 0.25);
+  p.drawPixmap(0, 0, pixmap_);
+
+  // Draw a frame
+  p.setOpacity(1.0);
+  p.setPen(palette().color(QPalette::Mid));
+  p.setRenderHint(QPainter::Antialiasing);
+  p.drawRoundedRect(rect(), 5, 5);
+
+  // Geometry
+
+  const QSize contents_size(kIconSize + kSpacing + fontMetrics().horizontalAdvance(text_), qMax(kIconSize, fontMetrics().height()));
+
+  const QRect contents(QPoint((width() - contents_size.width()) / 2, (height() - contents_size.height()) / 2), contents_size);
+  const QRect icon(contents.topLeft(), QSize(kIconSize, kIconSize));
+  const QRect text(icon.right() + kSpacing, icon.top(), contents.width() - kSpacing - kIconSize, contents.height());
+
+  // Icon and text
+  p.setPen(palette().color(QPalette::Text));
+  p.drawPixmap(icon, icon_);
+  p.drawText(text, Qt::TextDontClip | Qt::AlignVCenter, text_);  // NOLINT(bugprone-suspicious-enum-usage)
+
+}
+
+void SmartPlaylistSearchTermWidgetOverlay::mouseReleaseEvent(QMouseEvent *e) {
+
+  Q_UNUSED(e)
+  Q_EMIT parent_->Clicked();
+
+}
+
+void SmartPlaylistSearchTermWidgetOverlay::keyReleaseEvent(QKeyEvent *e) {
+
+  if (e->key() == Qt::Key_Space) {
+    Q_EMIT parent_->Clicked();
+  }
+
+}
+
+float SmartPlaylistSearchTermWidgetOverlay::opacity() const { return opacity_; }