1 /* 2 * Copyright (C) 2009, 2010 Apple Inc. All rights reserved. 3 * Copyright (C) 2014 Google Inc. All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 14 * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY 15 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 17 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE COMPUTER, INC. OR 18 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, 19 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 20 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR 21 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY 22 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 23 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 24 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 25 */ 26 27 #ifndef GraphicsLayerUpdater_h 28 #define GraphicsLayerUpdater_h 29 30 #include "platform/graphics/GraphicsLayer.h" 31 32 namespace blink { 33 34 class RenderLayer; 35 36 class GraphicsLayerUpdater { 37 38 public: 39 GraphicsLayerUpdater(); 40 ~GraphicsLayerUpdater(); 41 42 enum UpdateType { 43 DoNotForceUpdate, 44 ForceUpdate, 45 }; 46 47 void update(RenderLayer&, Vector<RenderLayer*>& layersNeedingPaintInvalidation); 48 needsRebuildTree()49 bool needsRebuildTree() const { return m_needsRebuildTree; } 50 51 #if ENABLE(ASSERT) 52 static void assertNeedsToUpdateGraphicsLayerBitsCleared(RenderLayer&); 53 #endif 54 55 private: 56 class UpdateContext; 57 58 void updateRecursive(RenderLayer&, UpdateType, const UpdateContext&, Vector<RenderLayer*>& layersNeedingPaintInvalidation); 59 60 bool m_needsRebuildTree; 61 }; 62 63 } // namespace blink 64 65 #endif // GraphicsLayerUpdater_h 66