Scrolling over tray icon support

src/ui/behavioursettingspage.cpp

@@ -106,6 +106,8 @@ void BehaviourSettingsPage::Load() {
 
   s.beginGroup(MainWindow::kSettingsGroup);
   ui_->b_show_tray_icon_->setChecked(s.value("showtray", true).toBool());
+  ui_->b_scroll_tray_icon_->setChecked(
+      s.value("scrolltrayicon", ui_->b_show_tray_icon_->isChecked()).toBool());
   ui_->b_keep_running_->setChecked(
       s.value("keeprunning", ui_->b_show_tray_icon_->isChecked()).toBool());
   ui_->doubleclick_addmode->setCurrentIndex(ui_->doubleclick_addmode->findData(
@@ -227,6 +229,7 @@ void BehaviourSettingsPage::Save() {
 
   s.beginGroup(MainWindow::kSettingsGroup);
   s.setValue("showtray", ui_->b_show_tray_icon_->isChecked());
+  s.setValue("scrolltrayicon", ui_->b_scroll_tray_icon_->isChecked());
   s.setValue("keeprunning", ui_->b_keep_running_->isChecked());
   s.setValue("startupbehaviour", int(behaviour));
   s.setValue("doubleclick_addmode", doubleclick_addmode);
@@ -266,4 +269,5 @@ void BehaviourSettingsPage::ShowTrayIconToggled(bool on) {
     ui_->b_remember_->setChecked(true);
   ui_->b_keep_running_->setEnabled(on);
   ui_->b_keep_running_->setChecked(on);
+  ui_->b_scroll_tray_icon_->setEnabled(on);
 }

src/ui/behavioursettingspage.ui

@@ -24,6 +24,16 @@
      </property>
     </widget>
    </item>
+   <item>
+    <widget class="QCheckBox" name="b_scroll_tray_icon_">
+     <property name="text">
+      <string>Scroll over icon to change track</string>
+     </property>
+     <property name="checked">
+      <bool>false</bool>
+     </property>
+    </widget>
+   </item>
    <item>
     <widget class="QCheckBox" name="b_keep_running_">
      <property name="text">

src/ui/qtsystemtrayicon.cpp

@@ -85,7 +85,18 @@ bool QtSystemTrayIcon::eventFilter(QObject* object, QEvent* event) {
         emit PreviousTrack();
       }
     } else {
+      QSettings s;
+      s.beginGroup(MainWindow::kSettingsGroup);
+      bool prev_next_track = s.value("scrolltrayicon").toBool();
+	  if(prev_next_track) {
+	    if (e->delta() < 0) {
+              emit NextTrack();
+            } else {
+              emit PreviousTrack();
+            }
+	  } else {
       emit ChangeVolume(e->delta());
+      }
     }
     return true;
   }

src/ui/qtsystemtrayicon.h

@@ -18,6 +18,7 @@
 #ifndef QTSYSTEMTRAYICON_H
 #define QTSYSTEMTRAYICON_H
 
+#include "mainwindow.h"
 #include "systemtrayicon.h"
 
 #include <QSystemTrayIcon>