Enable fullscreen support for OS X 10.7+

Fixes issue #2329
(cherry picked from commit a1361dfa7e)

src/core/mac_startup.h

@@ -5,6 +5,7 @@
 
 class MacGlobalShortcutBackend;
 class QObject;
+class QWidget;
 
 class PlatformInterface {
  public:
@@ -28,6 +29,7 @@ QString GetApplicationSupportPath();
 QString GetMusicDirectory();
 
 bool MigrateLegacyConfigFiles();
+void EnableFullScreen(const QWidget& main_window);
 
 }  // namespace mac
 

src/core/mac_startup.mm

@@ -52,11 +52,13 @@
 #import <Sparkle/SUUpdater.h>
 #endif
 
+#include <QApplication>
 #include <QCoreApplication>
 #include <QDir>
 #include <QEvent>
 #include <QFile>
 #include <QSettings>
+#include <QWidget>
 
 #include <QtDebug>
 
@@ -472,4 +474,17 @@ void DumpDictionary(CFDictionaryRef dict) {
   NSLog(@"%@", d);
 }
 
+// NSWindowCollectionBehaviorFullScreenPrimary
+static const NSUInteger kFullScreenPrimary = 1 << 7;
+
+void EnableFullScreen(const QWidget& main_window) {
+  if (QSysInfo::MacintoshVersion == QSysInfo::MV_SNOWLEOPARD) {
+    return;  // Unsupported on 10.6
+  }
+
+  NSView* view = reinterpret_cast<NSView*>(main_window.winId());
+  NSWindow* window = [view window];
+  [window setCollectionBehavior: kFullScreenPrimary];
+}
+
 }  // namespace mac

src/main.cpp

@@ -424,6 +424,9 @@ int main(int argc, char *argv[]) {
 
   // Window
   MainWindow w(&app, tray_icon.get(), &osd);
+#ifdef Q_OS_DARWIN
+  mac::EnableFullScreen(w);
+#endif  // Q_OS_DARWIN
 #ifdef HAVE_GIO
   ScanGIOModulePath();
 #endif