1 /* 2 * Copyright (C) 2010 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 ANDROID_HWUI_FONT_RENDERER_H 18 #define ANDROID_HWUI_FONT_RENDERER_H 19 20 #include "font/FontUtil.h" 21 #include "font/CacheTexture.h" 22 #include "font/CachedGlyphInfo.h" 23 #include "font/Font.h" 24 #ifdef BUGREPORT_FONT_CACHE_USAGE 25 #include "font/FontCacheHistoryTracker.h" 26 #endif 27 28 #include <utils/LruCache.h> 29 #include <utils/String8.h> 30 #include <utils/StrongPointer.h> 31 32 #include <SkPaint.h> 33 34 #include <GLES2/gl2.h> 35 36 #include <vector> 37 38 #ifdef ANDROID_ENABLE_RENDERSCRIPT 39 #include "RenderScript.h" 40 namespace RSC { 41 class Element; 42 class RS; 43 class ScriptIntrinsicBlur; 44 class sp; 45 } 46 #endif 47 48 namespace android { 49 namespace uirenderer { 50 51 #if HWUI_NEW_OPS 52 class BakedOpState; 53 class BakedOpRenderer; 54 struct ClipBase; 55 #else 56 class OpenGLRenderer; 57 #endif 58 59 class TextDrawFunctor { 60 public: 61 TextDrawFunctor( 62 #if HWUI_NEW_OPS 63 BakedOpRenderer* renderer, 64 const BakedOpState* bakedState, 65 const ClipBase* clip, 66 #else 67 OpenGLRenderer* renderer, 68 #endif 69 float x, float y, bool pureTranslate, 70 int alpha, SkXfermode::Mode mode, const SkPaint* paint) 71 : renderer(renderer) 72 #if HWUI_NEW_OPS 73 , bakedState(bakedState) 74 , clip(clip) 75 #endif 76 , x(x) 77 , y(y) 78 , pureTranslate(pureTranslate) 79 , alpha(alpha) 80 , mode(mode) 81 , paint(paint) { 82 } 83 84 void draw(CacheTexture& texture, bool linearFiltering); 85 86 #if HWUI_NEW_OPS 87 BakedOpRenderer* renderer; 88 const BakedOpState* bakedState; 89 const ClipBase* clip; 90 #else 91 OpenGLRenderer* renderer; 92 #endif 93 float x; 94 float y; 95 bool pureTranslate; 96 int alpha; 97 SkXfermode::Mode mode; 98 const SkPaint* paint; 99 }; 100 101 class FontRenderer { 102 public: 103 FontRenderer(const uint8_t* gammaTable); 104 ~FontRenderer(); 105 106 void flushLargeCaches(std::vector<CacheTexture*>& cacheTextures); 107 void flushLargeCaches(); 108 109 void setFont(const SkPaint* paint, const SkMatrix& matrix); 110 111 void precache(const SkPaint* paint, const glyph_t* glyphs, int numGlyphs, const SkMatrix& matrix); 112 void endPrecaching(); 113 114 bool renderPosText(const SkPaint* paint, const Rect* clip, const glyph_t* glyphs, 115 int numGlyphs, int x, int y, const float* positions, 116 Rect* outBounds, TextDrawFunctor* functor, bool forceFinish = true); 117 118 bool renderTextOnPath(const SkPaint* paint, const Rect* clip, const glyph_t* glyphs, 119 int numGlyphs, const SkPath* path, 120 float hOffset, float vOffset, Rect* outBounds, TextDrawFunctor* functor); 121 122 struct DropShadow { 123 uint32_t width; 124 uint32_t height; 125 uint8_t* image; 126 int32_t penX; 127 int32_t penY; 128 }; 129 130 // After renderDropShadow returns, the called owns the memory in DropShadow.image 131 // and is responsible for releasing it when it's done with it 132 DropShadow renderDropShadow(const SkPaint* paint, const glyph_t *glyphs, int numGlyphs, 133 float radius, const float* positions); 134 135 void setTextureFiltering(bool linearFiltering) { 136 mLinearFiltering = linearFiltering; 137 } 138 139 uint32_t getSize() const; 140 void dumpMemoryUsage(String8& log) const; 141 142 #ifdef BUGREPORT_FONT_CACHE_USAGE 143 FontCacheHistoryTracker& historyTracker() { return mHistoryTracker; } 144 #endif 145 146 private: 147 friend class Font; 148 149 const uint8_t* mGammaTable; 150 151 void allocateTextureMemory(CacheTexture* cacheTexture); 152 void deallocateTextureMemory(CacheTexture* cacheTexture); 153 void initTextTexture(); 154 CacheTexture* createCacheTexture(int width, int height, GLenum format, bool allocate); 155 void cacheBitmap(const SkGlyph& glyph, CachedGlyphInfo* cachedGlyph, 156 uint32_t *retOriginX, uint32_t *retOriginY, bool precaching); 157 CacheTexture* cacheBitmapInTexture(std::vector<CacheTexture*>& cacheTextures, const SkGlyph& glyph, 158 uint32_t* startX, uint32_t* startY); 159 160 void flushAllAndInvalidate(); 161 162 void checkInit(); 163 void initRender(const Rect* clip, Rect* bounds, TextDrawFunctor* functor); 164 void finishRender(); 165 166 void issueDrawCommand(std::vector<CacheTexture*>& cacheTextures); 167 void issueDrawCommand(); 168 void appendMeshQuadNoClip(float x1, float y1, float u1, float v1, 169 float x2, float y2, float u2, float v2, 170 float x3, float y3, float u3, float v3, 171 float x4, float y4, float u4, float v4, CacheTexture* texture); 172 void appendMeshQuad(float x1, float y1, float u1, float v1, 173 float x2, float y2, float u2, float v2, 174 float x3, float y3, float u3, float v3, 175 float x4, float y4, float u4, float v4, CacheTexture* texture); 176 void appendRotatedMeshQuad(float x1, float y1, float u1, float v1, 177 float x2, float y2, float u2, float v2, 178 float x3, float y3, float u3, float v3, 179 float x4, float y4, float u4, float v4, CacheTexture* texture); 180 181 void checkTextureUpdate(); 182 183 void setTextureDirty() { 184 mUploadTexture = true; 185 } 186 187 const std::vector<CacheTexture*>& cacheTexturesForFormat(GLenum format) const; 188 uint32_t getCacheSize(GLenum format) const; 189 uint32_t getFreeCacheSize(GLenum format) const; 190 191 uint32_t mSmallCacheWidth; 192 uint32_t mSmallCacheHeight; 193 uint32_t mLargeCacheWidth; 194 uint32_t mLargeCacheHeight; 195 196 std::vector<CacheTexture*> mACacheTextures; 197 std::vector<CacheTexture*> mRGBACacheTextures; 198 199 Font* mCurrentFont; 200 LruCache<Font::FontDescription, Font*> mActiveFonts; 201 202 CacheTexture* mCurrentCacheTexture; 203 204 bool mUploadTexture; 205 206 TextDrawFunctor* mFunctor; 207 const Rect* mClip; 208 Rect* mBounds; 209 bool mDrawn; 210 211 bool mInitialized; 212 213 bool mLinearFiltering; 214 215 #ifdef BUGREPORT_FONT_CACHE_USAGE 216 FontCacheHistoryTracker mHistoryTracker; 217 #endif 218 219 #ifdef ANDROID_ENABLE_RENDERSCRIPT 220 // RS constructs 221 RSC::sp<RSC::RS> mRs; 222 RSC::sp<const RSC::Element> mRsElement; 223 RSC::sp<RSC::ScriptIntrinsicBlur> mRsScript; 224 #endif 225 226 static void computeGaussianWeights(float* weights, int32_t radius); 227 static void horizontalBlur(float* weights, int32_t radius, const uint8_t *source, uint8_t *dest, 228 int32_t width, int32_t height); 229 static void verticalBlur(float* weights, int32_t radius, const uint8_t *source, uint8_t *dest, 230 int32_t width, int32_t height); 231 232 // the input image handle may have its pointer replaced (to avoid copies) 233 void blurImage(uint8_t** image, int32_t width, int32_t height, float radius); 234 }; 235 236 }; // namespace uirenderer 237 }; // namespace android 238 239 #endif // ANDROID_HWUI_FONT_RENDERER_H 240
