Add a means to set the application icon where supported

On OS X the application icon can be changed at runtime, so this adds a way
to set this via the QPlatformIntegration.

[ChangeLog][OS X] QApplication::setWindowIcon now changes the icon for the
application in the dock.

Task-number: QTBUG-43999
Change-Id: Ice298c0bd52f10f4866f37c6d3f20cf5419b7a1b
Reviewed-by: Gabriel de Dietrich <gabriel.dedietrich@theqtcompany.com>
Reviewed-by: Jake Petroules <jake.petroules@petroules.com>

1 files changed, 13 insertions, 0 deletions

diff --git a/src/plugins/platforms/cocoa/qcocoaintegration.mm b/src/plugins/platforms/cocoa/qcocoaintegration.mm
index aa33cfd8bc..c8f6dd05db 100644
--- a/src/plugins/platforms/cocoa/qcocoaintegration.mm
+++ b/src/plugins/platforms/cocoa/qcocoaintegration.mm
@@ -420,6 +420,7 @@ bool QCocoaIntegration::hasCapability(QPlatformIntegration::Capability cap) cons
     case ForeignWindows:
     case RasterGLSurface:
     case ApplicationState:
+    case ApplicationIcon:
         return true;
     default:
         return QPlatformIntegration::hasCapability(cap);
@@ -569,4 +570,16 @@ QList<QCocoaWindow *> *QCocoaIntegration::popupWindowStack()
     return &m_popupWindowStack;
 }
 
+void QCocoaIntegration::setApplicationIcon(const QIcon &icon) const
+{
+    NSImage *image = nil;
+    if (!icon.isNull()) {
+        NSSize size = [[[NSApplication sharedApplication] dockTile] size];
+        QPixmap pixmap = icon.pixmap(size.width, size.height);
+        image = static_cast<NSImage *>(qt_mac_create_nsimage(pixmap));
+    }
+    [[NSApplication sharedApplication] setApplicationIconImage:image];
+    [image release];
+}
+
 QT_END_NAMESPACE