| /* |
| * Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies) |
| * |
| * 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 TiledDrawingArea_h |
| #define TiledDrawingArea_h |
| |
| #if ENABLE(TILED_BACKING_STORE) |
| |
| #include "DrawingArea.h" |
| #include "RunLoop.h" |
| #include <WebCore/IntRect.h> |
| #include <wtf/Vector.h> |
| |
| namespace WebKit { |
| |
| class UpdateChunk; |
| |
| class TiledDrawingArea : public DrawingArea { |
| public: |
| explicit TiledDrawingArea(WebPage*); |
| virtual ~TiledDrawingArea(); |
| |
| virtual void setNeedsDisplay(const WebCore::IntRect&); |
| virtual void scroll(const WebCore::IntRect& scrollRect, const WebCore::IntSize& scrollDelta); |
| virtual void display(); |
| |
| #if USE(ACCELERATED_COMPOSITING) |
| virtual void attachCompositingContext() { } |
| virtual void detachCompositingContext() { } |
| virtual void setRootCompositingLayer(WebCore::GraphicsLayer*) { } |
| virtual void scheduleCompositingLayerSync() { } |
| virtual void syncCompositingLayers() { } |
| #endif |
| |
| virtual void didReceiveMessage(CoreIPC::Connection*, CoreIPC::MessageID, CoreIPC::ArgumentDecoder*); |
| |
| private: |
| void scheduleDisplay(); |
| |
| // CoreIPC message handlers. |
| void setSize(const WebCore::IntSize& viewSize); |
| void suspendPainting(); |
| void resumePainting(); |
| void didUpdate(); |
| void updateTile(int tileID, const WebCore::IntRect& dirtyRect, float scale); |
| |
| // Platform overrides |
| void paintIntoUpdateChunk(UpdateChunk*, float scale); |
| |
| void tileUpdateTimerFired(); |
| |
| WebCore::IntRect m_dirtyRect; |
| bool m_isWaitingForUpdate; |
| bool m_shouldPaint; |
| RunLoop::Timer<TiledDrawingArea> m_displayTimer; |
| |
| struct TileUpdate { |
| int tileID; |
| WebCore::IntRect dirtyRect; |
| float scale; |
| }; |
| typedef HashMap<int, TileUpdate> UpdateMap; |
| UpdateMap m_pendingUpdates; |
| RunLoop::Timer<TiledDrawingArea> m_tileUpdateTimer; |
| }; |
| |
| } // namespace WebKit |
| |
| #endif // TILED_BACKING_STORE |
| |
| #endif // TiledDrawingArea_h |