Cocoa: Add window fullscreen button on OS X Lion.

Use the heuristic that windows that are not an
NSPanel and has the MaximizedButtonHint get the
fullscreen button.

Change-Id: I9a3520b7e4cd1833421d5d2f5b73da7edbfc3e74
Reviewed-by: Bradley T. Hughes <bradley.hughes@nokia.com>

1 files changed, 9 insertions, 0 deletions

diff --git a/src/plugins/platforms/cocoa/qcocoawindow.mm b/src/plugins/platforms/cocoa/qcocoawindow.mm
index b4c4e31753..b5e8ff2246 100644
--- a/src/plugins/platforms/cocoa/qcocoawindow.mm
+++ b/src/plugins/platforms/cocoa/qcocoawindow.mm
@@ -382,6 +382,15 @@ NSWindow * QCocoaWindow::createNSWindow()
                                          defer:NO]; // Deferring window creation breaks OpenGL (the GL context is set up
                                                     // before the window is shown and needs a proper window.).
         window->m_cocoaPlatformWindow = this;
+
+#if MAC_OS_X_VERSION_MAX_ALLOWED >= MAC_OS_X_VERSION_10_7
+    if (QSysInfo::QSysInfo::MacintoshVersion >= QSysInfo::MV_10_7) {
+        // All windows with the WindowMaximizeButtonHint set also get a full-screen button.
+        if (flags & Qt::WindowMaximizeButtonHint)
+            [window setCollectionBehavior:NSWindowCollectionBehaviorFullScreenPrimary];
+    }
+#endif
+
         createdWindow = window;
     }
     return createdWindow;