DolphinQt2: add DoubleClickEventFilter

This is an easy way to get a `doubleClicked` signal for any type
of widget without creating custom classes for each one.

Source/Core/DolphinQt2/CMakeLists.txt

@@ -40,6 +40,7 @@ set(SRCS
   GameList/GameListModel.cpp
   GameList/GameTracker.cpp
   GameList/ListProxyModel.cpp
+  QtUtils/DoubleClickEventFilter.cpp
   QtUtils/ElidedButton.cpp
   Settings/GeneralPane.cpp
   Settings/InterfacePane.cpp

Source/Core/DolphinQt2/DolphinQt2.vcxproj

@@ -52,7 +52,7 @@
       <AdditionalOptions>/NODEFAULTLIB:libcmt %(AdditionalOptions)</AdditionalOptions>
     </Link>
     <ClCompile>
-      <AdditionalIncludeDirectories>$(ProjectDir)\VideoInterface;$(ProjectDir)\GameList;$(ProjectDir)\Settings;$(ProjectDir)\Config;$(ProjectDir)\Config\Mapping;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
+      <AdditionalIncludeDirectories>$(ProjectDir)\VideoInterface;$(ProjectDir)\GameList;$(ProjectDir)\Settings;$(ProjectDir)\Config;$(ProjectDir)\Config\Mapping;$(ProjectDir)\QtUtils;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
     </ClCompile>
     <Manifest>
       <AdditionalManifestFiles>DolphinQt2.manifest;%(AdditionalManifestFiles)</AdditionalManifestFiles>
@@ -88,6 +88,7 @@
     <QtMoc Include="Settings\InterfacePane.h" />
     <QtMoc Include="MainWindow.h" />
     <QtMoc Include="MenuBar.h" />
+    <QtMoc Include="QtUtils\DoubleClickEventFilter.h" />
     <QtMoc Include="RenderWidget.h" />
     <QtMoc Include="Settings.h" />
     <QtMoc Include="Settings\GeneralPane.h" />
@@ -114,6 +115,7 @@
     <ClCompile Include="$(QtMocOutPrefix)MenuBar.cpp" />
     <ClCompile Include="$(QtMocOutPrefix)PathDialog.cpp" />
     <ClCompile Include="$(QtMocOutPrefix)PropertiesDialog.cpp" />
+    <ClCompile Include="$(QtMocOutPrefix)DoubleClickEventFilter.cpp" />
     <ClCompile Include="$(QtMocOutPrefix)RenderWidget.cpp" />
     <ClCompile Include="$(QtMocOutPrefix)Settings.cpp" />
     <ClCompile Include="$(QtMocOutPrefix)SettingsWindow.cpp" />
@@ -146,6 +148,7 @@
     <ClCompile Include="Main.cpp" />
     <ClCompile Include="MainWindow.cpp" />
     <ClCompile Include="MenuBar.cpp" />
+    <ClCompile Include="QtUtils\DoubleClickEventFilter.cpp" />
     <ClCompile Include="QtUtils\ElidedButton.cpp" />
     <ClCompile Include="RenderWidget.cpp" />
     <ClCompile Include="Resources.cpp" />

Source/Core/DolphinQt2/DolphinQt2.vcxproj.filters

@@ -29,6 +29,9 @@
     <ClCompile Include="$(QtMocOutPrefix)MenuBar.cpp">
       <Filter>Generated Files</Filter>
     </ClCompile>
+    <ClCompile Include="$(QtMocOutPrefix)DoubleClickEventFilter.cpp">
+      <Filter>Generated Files</Filter>
+    </ClCompile>
     <ClCompile Include="$(QtMocOutPrefix)RenderWidget.cpp">
       <Filter>Generated Files</Filter>
     </ClCompile>
@@ -116,6 +119,9 @@
     <ClCompile Include="Config\Mapping\WiimoteEmuExtension.cpp" />
     <ClCompile Include="Config\Mapping\WiimoteEmuGeneral.cpp" />
     <ClCompile Include="Config\Mapping\WiimoteEmuMotionControl.cpp" />
+    <ClCompile Include="QtUtils\DoubleClickEventFilter.cpp">
+      <Filter>QtUtils</Filter>
+    </ClCompile>
     <ClCompile Include="QtUtils\ElidedButton.cpp">
       <Filter>QtUtils</Filter>
     </ClCompile>
@@ -160,6 +166,9 @@
     </QtMoc>
     <QtMoc Include="Config\Mapping\MappingWidget.h" />
     <QtMoc Include="Config\Mapping\MappingWindow.h" />
+    <QtMoc Include="QtUtils\DoubleClickEventFilter.h">
+      <Filter>QtUtils</Filter>
+    </QtMoc>
   </ItemGroup>
   <ItemGroup>
     <QtUi Include="*.ui" />

Source/Core/DolphinQt2/QtUtils/DoubleClickEventFilter.cpp

@@ -0,0 +1,15 @@
+// Copyright 2017 Dolphin Emulator Project
+// Licensed under GPLv2+
+// Refer to the license.txt file included.
+
+#include <QEvent>
+
+#include "DolphinQt2/QtUtils/DoubleClickEventFilter.h"
+
+bool DoubleClickEventFilter::eventFilter(QObject* object, QEvent* event)
+{
+  if (event->type() == QEvent::MouseButtonDblClick)
+    emit doubleClicked();
+
+  return false;
+}

Source/Core/DolphinQt2/QtUtils/DoubleClickEventFilter.h

@@ -0,0 +1,17 @@
+// Copyright 2017 Dolphin Emulator Project
+// Licensed under GPLv2+
+// Refer to the license.txt file included.
+
+#pragma once
+
+#include <QObject>
+
+class DoubleClickEventFilter : public QObject
+{
+  Q_OBJECT
+signals:
+  void doubleClicked();
+
+private:
+  bool eventFilter(QObject* object, QEvent* event) override;
+};