Fix image loading on Retina and other HiDPI displays.

3 files changed, 35 insertions, 15 deletions

diff --git a/Source/Core/DolphinQt/Main.cpp b/Source/Core/DolphinQt/Main.cpp
index 9bcea4de27..93d853ad62 100644
--- a/Source/Core/DolphinQt/Main.cpp
+++ b/Source/Core/DolphinQt/Main.cpp
@@ -39,6 +39,7 @@ static QString LowestSupportedOsVersion()
 int main(int argc, char* argv[])
 {
 	QApplication app(argc, argv);
+	app.setAttribute(Qt::AA_UseHighDpiPixmaps);
 	// TODO: Add command line options
 
 	UICommon::CreateDirectories();
diff --git a/Source/Core/DolphinQt/Utils/Resources.cpp b/Source/Core/DolphinQt/Utils/Resources.cpp
index 08c9e37ed2..0056f4f972 100644
--- a/Source/Core/DolphinQt/Utils/Resources.cpp
+++ b/Source/Core/DolphinQt/Utils/Resources.cpp
@@ -2,6 +2,9 @@
 // Licensed under GPLv2
 // Refer to the license.txt file included.
 
+#include <QApplication>
+#include <QFile>
+
 #include "Common/FileUtil.h"
 #include "Core/ConfigManager.h"
 
@@ -47,26 +50,40 @@ void Resources::Init()
 	UpdatePixmaps();
 }
 
+// Wrapper for GetImageFilename() so you don't have to to call it directly
+#define GIFN(file) GetImageFilename(SL(file), dir)
+
 void Resources::UpdatePixmaps()
 {
 	QString dir = QString::fromStdString(File::GetThemeDir(SConfig::GetInstance().m_LocalCoreStartupParameter.theme_name));
-	m_pixmaps[TOOLBAR_OPEN].load(dir + SL("open.png"));
-	m_pixmaps[TOOLBAR_REFRESH].load(dir + SL("refresh.png"));
-	m_pixmaps[TOOLBAR_BROWSE].load(dir + SL("browse.png"));
-	m_pixmaps[TOOLBAR_PLAY].load(dir + SL("play.png"));
-	m_pixmaps[TOOLBAR_STOP].load(dir + SL("stop.png"));
-	m_pixmaps[TOOLBAR_PAUSE].load(dir + SL("pause.png"));
-	m_pixmaps[TOOLBAR_FULLSCREEN].load(dir + SL("fullscreen.png"));
-	m_pixmaps[TOOLBAR_SCREENSHOT].load(dir + SL("screenshot.png"));
-	m_pixmaps[TOOLBAR_CONFIGURE].load(dir + SL("config.png"));
-	m_pixmaps[TOOLBAR_PLUGIN_GFX].load(dir + SL("graphics.png"));
-	m_pixmaps[TOOLBAR_PLUGIN_DSP].load(dir + SL("dsp.png"));
-	m_pixmaps[TOOLBAR_PLUGIN_GCPAD].load(dir + SL("gcpad.png"));
-	m_pixmaps[TOOLBAR_PLUGIN_WIIMOTE].load(dir + SL("wiimote.png"));
-	m_pixmaps[TOOLBAR_HELP].load(dir + SL("nobanner.png")); // TODO
+	m_pixmaps[TOOLBAR_OPEN].load(GIFN("open"));
+	m_pixmaps[TOOLBAR_REFRESH].load(GIFN("refresh"));
+	m_pixmaps[TOOLBAR_BROWSE].load(GIFN("browse"));
+	m_pixmaps[TOOLBAR_PLAY].load(GIFN("play"));
+	m_pixmaps[TOOLBAR_STOP].load(GIFN("stop"));
+	m_pixmaps[TOOLBAR_PAUSE].load(GIFN("pause"));
+	m_pixmaps[TOOLBAR_FULLSCREEN].load(GIFN("fullscreen"));
+	m_pixmaps[TOOLBAR_SCREENSHOT].load(GIFN("screenshot"));
+	m_pixmaps[TOOLBAR_CONFIGURE].load(GIFN("config"));
+	m_pixmaps[TOOLBAR_PLUGIN_GFX].load(GIFN("graphics"));
+	m_pixmaps[TOOLBAR_PLUGIN_DSP].load(GIFN("dsp"));
+	m_pixmaps[TOOLBAR_PLUGIN_GCPAD].load(GIFN("gcpad"));
+	m_pixmaps[TOOLBAR_PLUGIN_WIIMOTE].load(GIFN("wiimote"));
+	m_pixmaps[TOOLBAR_HELP].load(GIFN("nobanner")); // TODO
 	// TODO: toolbar[MEMCARD];
 	// TODO: toolbar[HOTKEYS];
-	m_pixmaps[BANNER_MISSING].load(dir + SL("nobanner.png"));
+	m_pixmaps[BANNER_MISSING].load(GIFN("nobanner"));
+}
+
+QString Resources::GetImageFilename(QString name, QString dir)
+{
+	if (qApp->devicePixelRatio() >= 2)
+	{
+		QString fileName = name.prepend(dir).append(SL("@2x.png"));
+		if (QFile::exists(fileName))
+			return fileName;
+	}
+	return name.prepend(dir).append(SL(".png"));
 }
 
 QPixmap& Resources::GetRegionPixmap(DiscIO::IVolume::ECountry region)
diff --git a/Source/Core/DolphinQt/Utils/Resources.h b/Source/Core/DolphinQt/Utils/Resources.h
index df9def2697..2820d9d6cb 100644
--- a/Source/Core/DolphinQt/Utils/Resources.h
+++ b/Source/Core/DolphinQt/Utils/Resources.h
@@ -50,4 +50,6 @@ private:
 	static QVector<QPixmap> m_regions;
 	static QVector<QPixmap> m_ratings;
 	static QVector<QPixmap> m_pixmaps;
+
+	static QString GetImageFilename(QString name, QString dir);
 };