Merge pull request #1164 from kemenaran/qt-high-dpi-fixes

citra-qt: high-DPI fixes and Retina on OS X

src/citra_qt/CMakeLists.txt

@@ -24,6 +24,7 @@ set(SRCS
             hotkeys.cpp
             main.cpp
             citra-qt.rc
+            Info.plist
             )
 
 set(HEADERS
@@ -72,6 +73,7 @@ endif()
 
 if (APPLE)
     add_executable(citra-qt MACOSX_BUNDLE ${SRCS} ${HEADERS} ${UI_HDRS})
+    set_target_properties(citra-qt PROPERTIES MACOSX_BUNDLE_INFO_PLIST ${CMAKE_CURRENT_SOURCE_DIR}/Info.plist)
 else()
     add_executable(citra-qt ${SRCS} ${HEADERS} ${UI_HDRS})
 endif()

src/citra_qt/Info.plist

@@ -0,0 +1,40 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
+<plist version="1.0">
+<dict>
+	<key>CFBundleDevelopmentRegion</key>
+	<string>English</string>
+	<key>CFBundleExecutable</key>
+	<string>$(EXECUTABLE_NAME)</string>
+	<key>CFBundleGetInfoString</key>
+	<string></string>
+	<key>CFBundleIconFile</key>
+	<string>citra.icns</string>
+	<key>CFBundleIdentifier</key>
+	<string>com.citra-emu.citra</string>
+	<key>CFBundleInfoDictionaryVersion</key>
+	<string>6.0</string>
+	<key>CFBundleLongVersionString</key>
+	<string></string>
+	<key>CFBundleName</key>
+	<string>Citra</string>
+	<key>CFBundlePackageType</key>
+	<string>APPL</string>
+	<key>CFBundleShortVersionString</key>
+	<string></string>
+	<key>CFBundleSignature</key>
+	<string>????</string>
+	<key>CFBundleVersion</key>
+	<string></string>
+	<key>CSResourcesFileMapped</key>
+	<true/>
+	<key>LSRequiresCarbon</key>
+	<true/>
+	<key>NSHumanReadableCopyright</key>
+	<string></string>
+	<key>NSPrincipalClass</key>
+	<string>NSApplication</string>
+	<key>NSHighResolutionCapable</key>
+	<string>True</string>
+</dict>
+</plist>

src/citra_qt/bootmanager.cpp

@@ -181,16 +181,9 @@ void GRenderWindow::PollEvents() {
 void GRenderWindow::OnFramebufferSizeChanged()
 {
     // Screen changes potentially incur a change in screen DPI, hence we should update the framebuffer size
-#if QT_VERSION >= QT_VERSION_CHECK(5, 0, 0)
+    qreal pixelRatio = windowPixelRatio();
-    // windowHandle() might not be accessible until the window is displayed to screen.
+    unsigned width = child->QPaintDevice::width() * pixelRatio;
-    auto pixel_ratio = windowHandle() ? (windowHandle()->screen()->devicePixelRatio()) : 1.0;
+    unsigned height = child->QPaintDevice::height() * pixelRatio;
-
-    unsigned width = child->QPaintDevice::width() * pixel_ratio;
-    unsigned height = child->QPaintDevice::height() * pixel_ratio;
-#else
-    unsigned width = child->QPaintDevice::width();
-    unsigned height = child->QPaintDevice::height();
-#endif
 
     NotifyFramebufferLayoutChanged(EmuWindow::FramebufferLayout::DefaultScreenLayout(width, height));
 }
@@ -223,6 +216,16 @@ QByteArray GRenderWindow::saveGeometry()
         return geometry;
 }
 
+qreal GRenderWindow::windowPixelRatio()
+{
+#if QT_VERSION >= QT_VERSION_CHECK(5, 0, 0)
+    // windowHandle() might not be accessible until the window is displayed to screen.
+    return windowHandle() ? windowHandle()->screen()->devicePixelRatio() : 1.0f;
+#else
+    return 1.0f;
+#endif
+}
+
 void GRenderWindow::closeEvent(QCloseEvent* event) {
     emit Closed();
     QWidget::closeEvent(event);
@@ -243,14 +246,18 @@ void GRenderWindow::mousePressEvent(QMouseEvent *event)
     if (event->button() == Qt::LeftButton)
     {
         auto pos = event->pos();
-        this->TouchPressed(static_cast<unsigned>(pos.x()), static_cast<unsigned>(pos.y()));
+        qreal pixelRatio = windowPixelRatio();
+        this->TouchPressed(static_cast<unsigned>(pos.x() * pixelRatio),
+                           static_cast<unsigned>(pos.y() * pixelRatio));
     }
 }
 
 void GRenderWindow::mouseMoveEvent(QMouseEvent *event)
 {
     auto pos = event->pos();
-    this->TouchMoved(static_cast<unsigned>(std::max(pos.x(), 0)), static_cast<unsigned>(std::max(pos.y(), 0)));
+    qreal pixelRatio = windowPixelRatio();
+    this->TouchMoved(std::max(static_cast<unsigned>(pos.x() * pixelRatio), 0u),
+                     std::max(static_cast<unsigned>(pos.y() * pixelRatio), 0u));
 }
 
 void GRenderWindow::mouseReleaseEvent(QMouseEvent *event)

src/citra_qt/bootmanager.h

@@ -111,6 +111,8 @@ public:
     void restoreGeometry(const QByteArray& geometry); // overridden
     QByteArray saveGeometry();  // overridden
 
+    qreal windowPixelRatio();
+
     void closeEvent(QCloseEvent* event) override;
 
     void keyPressEvent(QKeyEvent* event) override;