1 files changed, 112 insertions, 0 deletions
diff --git a/examples/winextras/musicplayer/volumebutton.cpp b/examples/winextras/musicplayer/volumebutton.cpp
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+++ b/examples/winextras/musicplayer/volumebutton.cpp
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+/****************************************************************************
+**
+** Copyright (C) 2013 Digia Plc and/or its subsidiary(-ies).
+** Contact: http://www.qt-project.org/legal
+**
+** This file is part of the examples of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:BSD$
+** You may use this file under the terms of the BSD license as follows:
+**
+** "Redistribution and use in source and binary forms, with or without
+** modification, are permitted provided that the following conditions are
+** met:
+**   * Redistributions of source code must retain the above copyright
+**     notice, this list of conditions and the following disclaimer.
+**   * Redistributions in binary form must reproduce the above copyright
+**     notice, this list of conditions and the following disclaimer in
+**     the documentation and/or other materials provided with the
+**     distribution.
+**   * Neither the name of Digia Plc and its Subsidiary(-ies) nor the names
+**     of its contributors may be used to endorse or promote products derived
+**     from this software without specific prior written permission.
+**
+**
+** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "volumebutton.h"
+
+#include <QtWidgets>
+#include <QtWinExtras>
+
+VolumeButton::VolumeButton(QWidget *parent) :
+    QToolButton(parent), menu(0), label(0), slider(0)
+{
+    setIcon(style()->standardIcon(QStyle::SP_MediaVolume));
+    setPopupMode(QToolButton::InstantPopup);
+
+    QWidget *popup = new QWidget(this);
+
+    slider = new QSlider(Qt::Horizontal, popup);
+    slider->setRange(0, 100);
+    connect(slider, SIGNAL(valueChanged(int)), this, SIGNAL(volumeChanged(int)));
+
+    label = new QLabel(popup);
+    label->setAlignment(Qt::AlignCenter);
+    label->setNum(100);
+    label->setMinimumWidth(label->sizeHint().width());
+    connect(slider, SIGNAL(valueChanged(int)), label, SLOT(setNum(int)));
+
+    QBoxLayout *popupLayout = new QHBoxLayout(popup);
+    popupLayout->setMargin(2);
+    popupLayout->addWidget(slider);
+    popupLayout->addWidget(label);
+
+    QWidgetAction *action = new QWidgetAction(this);
+    action->setDefaultWidget(popup);
+
+    menu = new QMenu(this);
+    menu->addAction(action);
+    setMenu(menu);
+
+    stylize();
+}
+
+void VolumeButton::increaseVolume()
+{
+    slider->triggerAction(QSlider::SliderPageStepAdd);
+}
+
+void VolumeButton::descreaseVolume()
+{
+    slider->triggerAction(QSlider::SliderPageStepSub);
+}
+
+int VolumeButton::volume() const
+{
+    return slider->value();
+}
+
+void VolumeButton::setVolume(int volume)
+{
+    slider->setValue(volume);
+}
+
+//! [0]
+void VolumeButton::stylize()
+{
+    if (QtWin::isCompositionEnabled()) {
+        QtWin::enableBlurBehindWindow(menu);
+        QString css("QMenu { border: 1px solid %1; border-radius: 2px; background: transparent; }");
+        menu->setStyleSheet(css.arg(QtWin::realColorizationColor().name()));
+    } else {
+        QtWin::disableBlurBehindWindow(menu);
+        QString css("QMenu { border: 1px solid black; background: %1; }");
+        menu->setStyleSheet(css.arg(QtWin::realColorizationColor().name()));
+    }
+}
+//! [0]