CanvasContext.h revision e18264b079481a244b30e3f71012c53bbd861f92
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; 38 39namespace renderthread { 40 41class GlobalContext; 42class CanvasContext; 43class RenderThread; 44 45class InvokeFunctorsTask : public RenderTask { 46public: 47 InvokeFunctorsTask(CanvasContext* context) 48 : mContext(context) {} 49 50 virtual void run(); 51 52private: 53 CanvasContext* mContext; 54}; 55 56// This per-renderer class manages the bridge between the global EGL context 57// and the render surface. 58class CanvasContext { 59public: 60 CanvasContext(bool translucent); 61 ~CanvasContext(); 62 63 bool initialize(EGLNativeWindowType window); 64 void updateSurface(EGLNativeWindowType window); 65 void setup(int width, int height); 66 void setDisplayListData(RenderNode* displayList, DisplayListData* newData); 67 void processLayerUpdates(const Vector<DeferredLayerUpdater*>* layerUpdaters); 68 void drawDisplayList(RenderNode* displayList, Rect* dirty); 69 void destroyCanvas(); 70 71 bool copyLayerInto(DeferredLayerUpdater* layer, SkBitmap* bitmap); 72 73 void attachFunctor(Functor* functor); 74 void detachFunctor(Functor* functor); 75 76 void runWithGlContext(RenderTask* task); 77 78private: 79 void setSurface(EGLNativeWindowType window); 80 void swapBuffers(); 81 void makeCurrent(); 82 83 friend class InvokeFunctorsTask; 84 void invokeFunctors(); 85 void handleFunctorStatus(int status, const Rect& redrawClip); 86 void removeFunctorsTask(); 87 void queueFunctorsTask(int delayMs = FUNCTOR_PROCESS_DELAY); 88 89 void requireGlContext(); 90 91 GlobalContext* mGlobalContext; 92 RenderThread& mRenderThread; 93 EGLSurface mEglSurface; 94 bool mDirtyRegionsEnabled; 95 96 bool mOpaque; 97 OpenGLRenderer* mCanvas; 98 bool mHaveNewSurface; 99 100 bool mInvokeFunctorsPending; 101 InvokeFunctorsTask mInvokeFunctorsTask; 102 103}; 104 105} /* namespace renderthread */ 106} /* namespace uirenderer */ 107} /* namespace android */ 108#endif /* CANVASCONTEXT_H_ */ 109