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 WebContentLayerClient_h 27 #define WebContentLayerClient_h 28 29 #include "WebCanvas.h" 30 #include "WebCommon.h" 31 32 namespace blink { 33 34 struct WebRect; 35 struct WebFloatRect; 36 37 class BLINK_PLATFORM_EXPORT WebContentLayerClient { 38 public: 39 enum GraphicsContextStatus { GraphicsContextEnabled, GraphicsContextDisabled }; 40 41 // Paints the content area for the layer, typically dirty rects submitted 42 // through WebContentLayer::setNeedsDisplay, submitting drawing commands 43 // through the WebCanvas. 44 // The canvas is already clipped to the |clip| rect. 45 // Optionally, the implementation may set |opaque| to a rect covering pixels that 46 // the implementation knows are opaque. This information can be used for various 47 // optimizations. 48 // The |disableContext| enum controls most processing in 49 // GraphicsContext to isolate the painting code in performance tests. 50 virtual void paintContents(WebCanvas*, const WebRect& clip, bool canPaintLCDText, GraphicsContextStatus = GraphicsContextEnabled) = 0; 51 52 protected: 53 virtual ~WebContentLayerClient() { } 54 }; 55 56 } // namespace blink 57 58 #endif // WebContentLayerClient_h 59
