1 files changed, 60 insertions, 0 deletions
diff --git a/Source/WebKit2/WebProcess/WebPage/mac/ChunkedUpdateDrawingAreaMac.cpp b/Source/WebKit2/WebProcess/WebPage/mac/ChunkedUpdateDrawingAreaMac.cpp
new file mode 100644
index 0000000..6bcecfd
--- /dev/null
+++ b/Source/WebKit2/WebProcess/WebPage/mac/ChunkedUpdateDrawingAreaMac.cpp
@@ -0,0 +1,60 @@
+/*
+ * Copyright (C) 2010 Apple Inc. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS''
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
+ * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
+ * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
+ * THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include "ChunkedUpdateDrawingArea.h"
+
+#include "UpdateChunk.h"
+#include "WebFrame.h"
+#include "WebPage.h"
+#include "WebFrameLoaderClient.h"
+#include <WebCore/Frame.h>
+#include <WebCore/GraphicsContext.h>
+#include <wtf/RetainPtr.h>
+
+using namespace WebCore;
+
+namespace WebKit {
+
+void ChunkedUpdateDrawingArea::paintIntoUpdateChunk(UpdateChunk* updateChunk)
+{
+    // FIXME: It would be better if we could avoid painting altogether when there is a custom representation.
+    if (m_webPage->mainFrameHasCustomRepresentation())
+        return;
+
+    RetainPtr<CGColorSpaceRef> colorSpace(AdoptCF, CGColorSpaceCreateDeviceRGB());
+    RetainPtr<CGContextRef> bitmapContext(AdoptCF, CGBitmapContextCreate(updateChunk->data(), updateChunk->rect().width(), updateChunk->rect().height(), 8, updateChunk->rect().width() * 4, colorSpace.get(), kCGImageAlphaPremultipliedFirst | kCGBitmapByteOrder32Host));
+
+    // WebCore expects a flipped coordinate system.
+    CGContextTranslateCTM(bitmapContext.get(), 0.0, updateChunk->rect().height());
+    CGContextScaleCTM(bitmapContext.get(), 1.0, -1.0);
+
+    // Now paint into the backing store.
+    GraphicsContext graphicsContext(bitmapContext.get());
+    graphicsContext.translate(-updateChunk->rect().x(), -updateChunk->rect().y());
+    
+    m_webPage->drawRect(graphicsContext, updateChunk->rect());
+}
+
+} // namespace WebKit