1 files changed, 115 insertions, 0 deletions
diff --git a/Source/WebKit2/WebProcess/WebPage/LayerTreeHost.h b/Source/WebKit2/WebProcess/WebPage/LayerTreeHost.h
new file mode 100644
index 000000000..61fbe2fc3
--- /dev/null
+++ b/Source/WebKit2/WebProcess/WebPage/LayerTreeHost.h
@@ -0,0 +1,115 @@
+/*
+ * 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 LayerTreeHost_h
+#define LayerTreeHost_h
+
+#include <wtf/PassRefPtr.h>
+#include <wtf/RefCounted.h>
+
+namespace CoreIPC {
+class ArgumentDecoder;
+class Connection;
+class MessageID;
+}
+
+namespace WebCore {
+class FloatPoint;
+class IntRect;
+class IntSize;
+class GraphicsLayer;
+}
+
+namespace WebKit {
+
+class LayerTreeContext;
+class UpdateInfo;
+class WebPage;
+
+#if PLATFORM(WIN)
+struct WindowGeometry;
+#endif
+
+class LayerTreeHost : public RefCounted<LayerTreeHost> {
+public:
+    static PassRefPtr<LayerTreeHost> create(WebPage*);
+    virtual ~LayerTreeHost();
+
+    static bool supportsAcceleratedCompositing();
+
+    virtual const LayerTreeContext& layerTreeContext() = 0;
+    virtual void scheduleLayerFlush() = 0;
+    virtual void setLayerFlushSchedulingEnabled(bool) = 0;
+    virtual void setShouldNotifyAfterNextScheduledLayerFlush(bool) = 0;
+    virtual void setRootCompositingLayer(WebCore::GraphicsLayer*) = 0;
+    virtual void invalidate() = 0;
+
+    virtual void setNonCompositedContentsNeedDisplay(const WebCore::IntRect&) = 0;
+    virtual void scrollNonCompositedContents(const WebCore::IntRect& scrollRect, const WebCore::IntSize& scrollOffset) = 0;
+    virtual void forceRepaint() = 0;
+    virtual void sizeDidChange(const WebCore::IntSize& newSize) = 0;
+    virtual void deviceScaleFactorDidChange() = 0;
+
+    virtual void didInstallPageOverlay() = 0;
+    virtual void didUninstallPageOverlay() = 0;
+    virtual void setPageOverlayNeedsDisplay(const WebCore::IntRect&) = 0;
+
+    virtual void pauseRendering() { }
+    virtual void resumeRendering() { }
+
+#if USE(TILED_BACKING_STORE)
+    virtual void setVisibleContentRectAndScale(const WebCore::IntRect&, float scale) { }
+    virtual void setVisibleContentRectTrajectoryVector(const WebCore::FloatPoint&) { }
+    virtual void setVisibleContentRectForLayer(int layerID, const WebCore::IntRect&) { }
+    virtual void renderNextFrame() { }
+    virtual void purgeBackingStores() { }
+    virtual void didReceiveLayerTreeHostMessage(CoreIPC::Connection*, CoreIPC::MessageID, CoreIPC::ArgumentDecoder*);
+#endif
+
+#if PLATFORM(WIN)
+    virtual void scheduleChildWindowGeometryUpdate(const WindowGeometry&) = 0;
+#endif
+
+protected:
+    explicit LayerTreeHost(WebPage*);
+
+    WebPage* m_webPage;
+
+
+#if USE(TILED_BACKING_STORE)
+    bool m_waitingForUIProcess;
+#endif
+};
+
+#if !PLATFORM(WIN) && !PLATFORM(QT)
+inline bool LayerTreeHost::supportsAcceleratedCompositing()
+{
+    return true;
+}
+#endif
+
+} // namespace WebKit
+
+#endif // LayerTreeHost_h