feat: 声音插件滚轮调节音量

适配插件接口的eventHandler事件，响应对滚轮的处理，让其来调节音量

Log:
Influence: 将鼠标放在任务栏声音图标上，滚动滚轮，观察音量大小是否调节
Bug: https://pms.uniontech.com/bug-view-172417.html
Change-Id: I82cf58f652568f4152083973ba8328a39f496656

frame/window/quickpluginwindow.cpp

@@ -711,6 +711,14 @@ void QuickDockItem::hideEvent(QHideEvent *event)
     }
 }
 
+bool QuickDockItem::eventFilter(QObject *watched, QEvent *event)
+{
+    if (watched == this)
+        return m_pluginItem->eventHandler(event);
+
+    return QWidget::eventFilter(watched, event);
+}
+
 QPixmap QuickDockItem::iconPixmap() const
 {
     int pixmapSize = static_cast<int>(ICONHEIGHT * qApp->devicePixelRatio());
@@ -749,6 +757,8 @@ void QuickDockItem::initAttribute()
         Qt::WindowFlags flags = m_popupWindow->windowFlags() | Qt::FramelessWindowHint;
         m_popupWindow->setWindowFlags(flags);
     }
+
+    this->installEventFilter(this);
 }
 
 void QuickDockItem::initConnection()

frame/window/quickpluginwindow.h

@@ -109,6 +109,7 @@ protected:
     void leaveEvent(QEvent *event) override;
     void showEvent(QShowEvent *event) override;
     void hideEvent(QHideEvent *event) override;
+    bool eventFilter(QObject *watched, QEvent *event) override;
 
 private:
     QPoint topleftPoint() const;

plugins/sound/soundplugin.cpp

@@ -24,6 +24,8 @@
 #include "soundwidget.h"
 #include "sounddeviceswidget.h"
 
+#include <DDBusSender>
+
 #include <QDebug>
 #include <QAccessible>
 
@@ -164,6 +166,46 @@ PluginFlags SoundPlugin::flags() const
             | PluginFlag::Attribute_CanSetting;
 }
 
+bool SoundPlugin::eventHandler(QEvent *event)
+{
+    // 当前只处理鼠标滚轮事件
+    if (event->type() != QEvent::Wheel)
+        return PluginsItemInterface::eventHandler(event);
+
+    // 获取当前默认的声音设备
+    QDBusPendingCall defaultSinkCall = DDBusSender().service("org.deepin.daemon.Audio1")
+            .path("/org/deepin/daemon/Audio1")
+            .interface("org.deepin.daemon.Audio1")
+            .property("DefaultSink").get();
+    defaultSinkCall.waitForFinished();
+    QDBusReply<QVariant> path = defaultSinkCall.reply();
+    const QString defaultSinkPath = path.value().value<QDBusObjectPath>().path();
+    if (defaultSinkPath.isNull())
+        return false;
+
+    // 获取当前默认声音设备的音量
+    DDBusSender sinkDBus = DDBusSender().service("org.deepin.daemon.Audio1")
+            .path(defaultSinkPath).interface("org.deepin.daemon.Audio1.Sink");
+    QDBusPendingCall volumeCall = sinkDBus.property("Volume").get();
+    volumeCall.waitForFinished();
+    QDBusReply<QVariant> volumePath = volumeCall.reply();
+    double volume = volumePath.value().value<double>();
+
+    // 根据滚轮的动作来增加音量或者减小音量
+    QWheelEvent *wheelEvent = static_cast<QWheelEvent *>(event);
+    if (wheelEvent->angleDelta().y() > 0) {
+        // 向上滚动，增大音量
+        if (volume < 1)
+            sinkDBus.method("SetVolume").arg(volume + 0.02).arg(true).call();
+    } else {
+        // 向下滚动，调小音量
+        if (volume > 0)
+            sinkDBus.method("SetVolume").arg(volume - 0.02).arg(true).call();
+    }
+
+    return true;
+}
+
 void SoundPlugin::refreshPluginItemsVisible()
 {
     if (pluginIsDisable())

plugins/sound/soundplugin.h

@@ -54,6 +54,7 @@ public:
     QIcon icon(const DockPart &dockPart, DGuiApplicationHelper::ColorType themeType) override;
     PluginMode status() const override;
     PluginFlags flags() const override;
+    bool eventHandler(QEvent *event) override;
 
 private:
     void refreshPluginItemsVisible();