1/* 2 * Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies) 3 * 4 * Redistribution and use in source and binary forms, with or without 5 * modification, are permitted provided that the following conditions 6 * are met: 7 * 1. Redistributions of source code must retain the above copyright 8 * notice, this list of conditions and the following disclaimer. 9 * 2. Redistributions in binary form must reproduce the above copyright 10 * notice, this list of conditions and the following disclaimer in the 11 * documentation and/or other materials provided with the distribution. 12 * 13 * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS'' 14 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, 15 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 16 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS 17 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 18 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 19 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 20 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 21 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 22 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF 23 * THE POSSIBILITY OF SUCH DAMAGE. 24 */ 25 26#ifndef TiledDrawingAreaTile_h 27#define TiledDrawingAreaTile_h 28 29#include "IntPoint.h" 30#include "IntPointHash.h" 31#include "IntRect.h" 32#include "GraphicsContext.h" 33#include <wtf/PassRefPtr.h> 34#include <wtf/RefCounted.h> 35 36#if PLATFORM(QT) 37#include <QPixmap> 38#include <QRegion> 39#endif 40 41namespace WebKit { 42 43class TiledDrawingAreaProxy; 44class UpdateChunk; 45 46class TiledDrawingAreaTile : public RefCounted<TiledDrawingAreaTile> { 47public: 48 typedef WebCore::IntPoint Coordinate; 49 50 static PassRefPtr<TiledDrawingAreaTile> create(TiledDrawingAreaProxy* proxy, const Coordinate& tileCoordinate) { return adoptRef(new TiledDrawingAreaTile(proxy, tileCoordinate)); } 51 ~TiledDrawingAreaTile(); 52 53 bool isDirty() const; 54 void invalidate(const WebCore::IntRect&); 55 void updateBackBuffer(); 56 bool hasReadyBackBuffer() const; 57 void swapBackBufferToFront(); 58 bool isReadyToPaint() const; 59 void paint(WebCore::GraphicsContext*, const WebCore::IntRect&); 60 bool hasBackBufferUpdatePending() const { return m_hasUpdatePending; } 61 62 const TiledDrawingAreaTile::Coordinate& coordinate() const { return m_coordinate; } 63 const WebCore::IntRect& rect() const { return m_rect; } 64 void resize(const WebCore::IntSize&); 65 66 void updateFromChunk(UpdateChunk* updateChunk, float); 67 68 int ID() const { return m_ID; } 69 70private: 71 TiledDrawingAreaTile(TiledDrawingAreaProxy* proxy, const TiledDrawingAreaTile::Coordinate& tileCoordinate); 72 73 TiledDrawingAreaProxy* m_proxy; 74 Coordinate m_coordinate; 75 WebCore::IntRect m_rect; 76 77 int m_ID; 78 bool m_hasUpdatePending; 79 80#if PLATFORM(QT) 81 QPixmap m_buffer; 82 QPixmap m_backBuffer; 83 QRegion m_dirtyRegion; 84#endif 85}; 86 87} 88 89#endif 90