1 /* 2 * Copyright (C) 2011 Google Inc. All rights reserved. 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 * 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 AND ITS CONTRIBUTORS "AS IS" AND ANY 15 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED 16 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 17 * DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY 18 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 19 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 20 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND 21 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 23 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 24 */ 25 26 #ifndef WebContentLayer_h 27 #define WebContentLayer_h 28 29 #include "WebCommon.h" 30 #include "WebLayer.h" 31 32 namespace blink { 33 class WebContentLayerClient; 34 35 class WebContentLayer { 36 public: 37 virtual ~WebContentLayer() { } 38 39 // The WebContentLayer has ownership of this wrapper. 40 virtual WebLayer* layer() = 0; 41 42 // Set to true if the backside of this layer's contents should be visible when composited. 43 // Defaults to false. 44 virtual void setDoubleSided(bool) = 0; 45 46 // Allow the compositor to determine the scale at which the layer should 47 // be rasterized based on the layer's hierarchy and transform. This defaults 48 // to false. 49 virtual void setAutomaticallyComputeRasterScale(bool) { } 50 51 // Set to draw a system-defined checkerboard if the compositor would otherwise draw a tile in this layer 52 // and the actual contents are unavailable. If false, the compositor will draw the layer's background color 53 // for these tiles. 54 // Defaults to false. 55 virtual void setDrawCheckerboardForMissingTiles(bool) = 0; 56 }; 57 58 } // namespace blink 59 60 #endif // WebContentLayer_h 61
