CanvasContext.h revision fae904d63947fe1687d1d44be29234cc3d538f24
1/* 2 * Copyright (C) 2014 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17#ifndef CANVASCONTEXT_H_ 18#define CANVASCONTEXT_H_ 19 20#include <cutils/compiler.h> 21#include <EGL/egl.h> 22#include <SkBitmap.h> 23#include <utils/Functor.h> 24#include <utils/Vector.h> 25 26#include "RenderTask.h" 27 28#define FUNCTOR_PROCESS_DELAY 4 29 30namespace android { 31namespace uirenderer { 32 33class DeferredLayerUpdater; 34class RenderNode; 35class DisplayListData; 36class OpenGLRenderer; 37class Rect; 38class Layer; 39 40namespace renderthread { 41 42class GlobalContext; 43class CanvasContext; 44class RenderThread; 45 46// This per-renderer class manages the bridge between the global EGL context 47// and the render surface. 48class CanvasContext { 49public: 50 CanvasContext(bool translucent); 51 ~CanvasContext(); 52 53 bool initialize(EGLNativeWindowType window); 54 void updateSurface(EGLNativeWindowType window); 55 void pauseSurface(EGLNativeWindowType window); 56 void setup(int width, int height); 57 void processLayerUpdates(const Vector<DeferredLayerUpdater*>* layerUpdaters, bool* hasFunctors); 58 void drawDisplayList(RenderNode* displayList, Rect* dirty); 59 void destroyCanvasAndSurface(); 60 61 bool copyLayerInto(DeferredLayerUpdater* layer, SkBitmap* bitmap); 62 63 void invokeFunctor(Functor* functor); 64 65 void runWithGlContext(RenderTask* task); 66 67 Layer* createRenderLayer(int width, int height); 68 Layer* createTextureLayer(); 69 70private: 71 void setSurface(EGLNativeWindowType window); 72 void swapBuffers(); 73 void requireSurface(); 74 75 void requireGlContext(); 76 77 GlobalContext* mGlobalContext; 78 RenderThread& mRenderThread; 79 EGLSurface mEglSurface; 80 bool mDirtyRegionsEnabled; 81 82 bool mOpaque; 83 OpenGLRenderer* mCanvas; 84 bool mHaveNewSurface; 85}; 86 87} /* namespace renderthread */ 88} /* namespace uirenderer */ 89} /* namespace android */ 90#endif /* CANVASCONTEXT_H_ */ 91