Revert "Improve raster graphics system performance on Mac."

This reverts commit f5f62c0bede7b4558b35b595b3b9bc11e0232fac.
Breaks the build for the cocoa port.

6 files changed, 9 insertions, 60 deletions

diff --git a/src/gui/kernel/qcocoasharedwindowmethods_mac_p.h b/src/gui/kernel/qcocoasharedwindowmethods_mac_p.h
index 7829a4e..1a265d0 100644
--- a/src/gui/kernel/qcocoasharedwindowmethods_mac_p.h
+++ b/src/gui/kernel/qcocoasharedwindowmethods_mac_p.h
@@ -51,9 +51,6 @@
  NSPanel, while QCocoaWindow needs to inherit NSWindow rather than NSPanel).
 ****************************************************************************/
 
-#include <private/qapplication_p.h>
-#include <private/qbackingstore_p.h>
-
 QT_BEGIN_NAMESPACE
 extern Qt::MouseButton cocoaButton2QtButton(NSInteger buttonNum); // qcocoaview.mm
 extern QPointer<QWidget> qt_button_down; //qapplication_mac.cpp
@@ -188,20 +185,3 @@ QT_END_NAMESPACE
     return [super frameViewClassForStyleMask:styleMask];
 }
 
-- (void)displayIfNeeded
-{
-
-    QWidget *qwidget = [[QT_MANGLE_NAMESPACE(QCocoaWindowDelegate) sharedDelegate] qt_qwidgetForWindow:self];
-    if (qwidget == 0) {
-        [super displayIfNeeded];
-        return;
-    }
-
-    if (QApplicationPrivate::graphicsSystem() != 0) {
-        if (QWidgetBackingStore *bs = qt_widget_private(qwidget)->maybeBackingStore())
-            bs->sync(qwidget, qwidget->rect());
-    }
-    [super displayIfNeeded];
-}
-
-
diff --git a/src/gui/kernel/qcocoaview_mac.mm b/src/gui/kernel/qcocoaview_mac.mm
index 2c35be2..d255604 100644
--- a/src/gui/kernel/qcocoaview_mac.mm
+++ b/src/gui/kernel/qcocoaview_mac.mm
@@ -520,11 +520,10 @@ extern "C" {
 - (void)drawRect:(NSRect)aRect
 {
     if (QApplicationPrivate::graphicsSystem() != 0) {
-        if (QWidgetBackingStore *bs = qwidgetprivate->maybeBackingStore()) {
-            // Drawing is handled on the window level
-            // See qcocoasharedwindowmethods_mac_p.
-            return;
-        }
+        if (QWidgetBackingStore *bs = qwidgetprivate->maybeBackingStore())
+            bs->markDirty(qwidget->rect(), qwidget);
+        qwidgetprivate->syncBackingStore(qwidget->rect());
+        return;
     }
     CGContextRef cg = (CGContextRef)[[NSGraphicsContext currentContext] graphicsPort];
     qwidgetprivate->hd = cg;
diff --git a/src/gui/kernel/qt_cocoa_helpers_mac.mm b/src/gui/kernel/qt_cocoa_helpers_mac.mm
index 65c04e5..e06a810 100644
--- a/src/gui/kernel/qt_cocoa_helpers_mac.mm
+++ b/src/gui/kernel/qt_cocoa_helpers_mac.mm
@@ -1162,7 +1162,7 @@ CGContextRef qt_mac_graphicsContextFor(QWidget *widget)
     CGrafPtr port = GetWindowPort(qt_mac_window_for(widget));
     QDBeginCGContext(port, &context);
 #else
-    CGContextRef context = reinterpret_cast<CGContextRef>([[qt_mac_window_for(widget) graphicsContext] graphicsPort]);
+    CGContextRef context = (CGContextRef)[[NSGraphicsContext graphicsContextWithWindow:qt_mac_window_for(widget)] graphicsPort];
 #endif
     return context;
 }
diff --git a/src/gui/kernel/qwidget.cpp b/src/gui/kernel/qwidget.cpp
index 78a25ac..ffad38b 100644
--- a/src/gui/kernel/qwidget.cpp
+++ b/src/gui/kernel/qwidget.cpp
@@ -1660,13 +1660,7 @@ void QWidgetPrivate::syncBackingStore()
         repaint_sys(dirty);
         dirty = QRegion();
     } else if (QWidgetBackingStore *bs = maybeBackingStore()) {
-#ifdef QT_MAC_USE_COCOA
-        Q_UNUSED(bs);
-        void qt_mac_set_needs_display(QWidget *, QRegion);
-        qt_mac_set_needs_display(q_func(), QRegion());
-#else
         bs->sync();
-#endif
     }
 }
 
@@ -1674,15 +1668,8 @@ void QWidgetPrivate::syncBackingStore(const QRegion &region)
 {
     if (paintOnScreen())
         repaint_sys(region);
-    else if (QWidgetBackingStore *bs = maybeBackingStore()) {
-#ifdef QT_MAC_USE_COCOA
-        Q_UNUSED(bs);
-        void qt_mac_set_needs_display(QWidget *, QRegion);
-        qt_mac_set_needs_display(q_func(), region);
-#else
+    else if (QWidgetBackingStore *bs = maybeBackingStore())
         bs->sync(q_func(), region);
-#endif
-    }
 }
 
 void QWidgetPrivate::setUpdatesEnabled_helper(bool enable)
diff --git a/src/gui/kernel/qwidget_mac.mm b/src/gui/kernel/qwidget_mac.mm
index b5888b4..78c1562 100644
--- a/src/gui/kernel/qwidget_mac.mm
+++ b/src/gui/kernel/qwidget_mac.mm
@@ -565,25 +565,6 @@ inline static void qt_mac_set_window_group_to_popup(OSWindowRef window)
 }
 #endif
 
-#ifdef QT_MAC_USE_COCOA
-void qt_mac_set_needs_display(QWidget *widget, QRegion region)
-{
-    NSView *theNSView = qt_mac_nativeview_for(widget);
-    if (region.isNull()) {
-        [theNSView setNeedsDisplay:YES];
-        return;
-    }
-
-    QVector<QRect> rects = region.rects();
-    for (int i = 0; i<rects.count(); ++i) {
-        const QRect &rect = rects.at(i);
-        NSRect nsrect = NSMakeRect(rect.x(), rect.y(), rect.width(), rect.height());
-        [theNSView setNeedsDisplayInRect:nsrect];
-    }
-
-}
-#endif
-
 inline static bool updateRedirectedToGraphicsProxyWidget(QWidget *widget, const QRect &rect)
 {
     if (!widget)
diff --git a/src/gui/painting/qwindowsurface_raster.cpp b/src/gui/painting/qwindowsurface_raster.cpp
index eee6bef..a0d2b9b 100644
--- a/src/gui/painting/qwindowsurface_raster.cpp
+++ b/src/gui/painting/qwindowsurface_raster.cpp
@@ -295,8 +295,10 @@ void QRasterWindowSurface::flush(QWidget *widget, const QRegion &rgn, const QPoi
     CGContextRestoreGState(context);
 #ifndef QT_MAC_USE_COCOA
     QDEndCGContext(port, &context);
+#else
+    CGContextFlush(context);
+#endif
 #endif
-#endif // Q_WS_MAC
 
 #ifdef Q_OS_SYMBIAN
     Q_UNUSED(widget);