1 files changed, 76 insertions, 0 deletions
diff --git a/Source/WebKit2/WebProcess/WebPage/DrawingAreaImpl.h b/Source/WebKit2/WebProcess/WebPage/DrawingAreaImpl.h
new file mode 100644
index 0000000..1f1b2e2
--- /dev/null
+++ b/Source/WebKit2/WebProcess/WebPage/DrawingAreaImpl.h
@@ -0,0 +1,76 @@
+/*
+ * Copyright (C) 2011 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.
+ */
+
+#ifndef DrawingAreaImpl_h
+#define DrawingAreaImpl_h
+
+#include "DrawingArea.h"
+#include "Region.h"
+#include "RunLoop.h"
+
+namespace WebKit {
+
+struct UpdateInfo;
+
+class DrawingAreaImpl : public DrawingArea {
+public:
+    static PassRefPtr<DrawingAreaImpl> create(DrawingAreaInfo::Identifier, WebPage*);
+    virtual ~DrawingAreaImpl();
+
+private:
+    DrawingAreaImpl(DrawingAreaInfo::Identifier, WebPage*);
+
+    // DrawingArea
+    virtual void setNeedsDisplay(const WebCore::IntRect&);
+    virtual void scroll(const WebCore::IntRect& scrollRect, const WebCore::IntSize& scrollDelta);
+    virtual void attachCompositingContext();
+    virtual void detachCompositingContext();
+    virtual void setRootCompositingLayer(WebCore::GraphicsLayer*);
+    virtual void scheduleCompositingLayerSync();
+    virtual void syncCompositingLayers();
+    virtual void didReceiveMessage(CoreIPC::Connection*, CoreIPC::MessageID, CoreIPC::ArgumentDecoder*);
+
+    // CoreIPC message handlers.
+    virtual void setSize(const WebCore::IntSize&);
+    virtual void didUpdate();
+
+    void scheduleDisplay();
+    void display();
+    void display(UpdateInfo&);
+
+    Region m_dirtyRegion;
+    WebCore::IntRect m_scrollRect;
+    WebCore::IntSize m_scrollDelta;
+    
+    // Whether we're waiting for a DidUpdate message. Used for throttling paints so that the 
+    // web process won't paint more frequent than the UI process can handle.
+    bool m_isWaitingForDidUpdate;
+    
+    RunLoop::Timer<DrawingAreaImpl> m_displayTimer;
+};
+
+} // namespace WebKit
+
+#endif // DrawingAreaImpl_h