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 <utils/Functor.h> 21 #include <utils/LruCache.h> 22 #include <utils/Vector.h> 23 #include <utils/StrongPointer.h> 24 25 #include <SkPaint.h> 26 27 #include <GLES2/gl2.h> 28 29 #include "font/FontUtil.h" 30 #include "font/CacheTexture.h" 31 #include "font/CachedGlyphInfo.h" 32 #include "font/Font.h" 33 #include "utils/SortedList.h" 34 #include "Matrix.h" 35 #include "Properties.h" 36 37 #ifdef ANDROID_ENABLE_RENDERSCRIPT 38 #include "RenderScript.h" 39 namespace RSC { 40 class Element; 41 class RS; 42 class ScriptIntrinsicBlur; 43 class sp; 44 } 45 #endif 46 47 class Functor; 48 49 namespace android { 50 namespace uirenderer { 51 52 class OpenGLRenderer; 53 54 /////////////////////////////////////////////////////////////////////////////// 55 // TextSetupFunctor 56 /////////////////////////////////////////////////////////////////////////////// 57 class TextSetupFunctor: public Functor { 58 public: 59 struct Data { 60 Data(GLenum glyphFormat) : glyphFormat(glyphFormat) { 61 } 62 63 GLenum glyphFormat; 64 }; 65 66 TextSetupFunctor(OpenGLRenderer* renderer, float x, float y, bool pureTranslate, 67 int alpha, SkXfermode::Mode mode, SkPaint* paint): Functor(), 68 renderer(renderer), x(x), y(y), pureTranslate(pureTranslate), 69 alpha(alpha), mode(mode), paint(paint) { 70 } 71 ~TextSetupFunctor() { } 72 73 status_t operator ()(int what, void* data); 74 75 OpenGLRenderer* renderer; 76 float x; 77 float y; 78 bool pureTranslate; 79 int alpha; 80 SkXfermode::Mode mode; 81 SkPaint* paint; 82 }; 83 84 /////////////////////////////////////////////////////////////////////////////// 85 // FontRenderer 86 /////////////////////////////////////////////////////////////////////////////// 87 88 class FontRenderer { 89 public: 90 FontRenderer(); 91 ~FontRenderer(); 92 93 void flushLargeCaches(Vector<CacheTexture*>& cacheTextures); 94 void flushLargeCaches(); 95 96 void setGammaTable(const uint8_t* gammaTable) { 97 mGammaTable = gammaTable; 98 } 99 100 void setFont(SkPaint* paint, const mat4& matrix); 101 102 void precache(SkPaint* paint, const char* text, int numGlyphs, const mat4& matrix); 103 void endPrecaching(); 104 105 // bounds is an out parameter 106 bool renderPosText(SkPaint* paint, const Rect* clip, const char *text, uint32_t startIndex, 107 uint32_t len, int numGlyphs, int x, int y, const float* positions, Rect* bounds, 108 Functor* functor, bool forceFinish = true); 109 110 // bounds is an out parameter 111 bool renderTextOnPath(SkPaint* paint, const Rect* clip, const char *text, uint32_t startIndex, 112 uint32_t len, int numGlyphs, SkPath* path, float hOffset, float vOffset, Rect* bounds, 113 Functor* functor); 114 115 struct DropShadow { 116 DropShadow() { }; 117 118 DropShadow(const DropShadow& dropShadow): 119 width(dropShadow.width), height(dropShadow.height), 120 image(dropShadow.image), penX(dropShadow.penX), 121 penY(dropShadow.penY) { 122 } 123 124 uint32_t width; 125 uint32_t height; 126 uint8_t* image; 127 int32_t penX; 128 int32_t penY; 129 }; 130 131 // After renderDropShadow returns, the called owns the memory in DropShadow.image 132 // and is responsible for releasing it when it's done with it 133 DropShadow renderDropShadow(SkPaint* paint, const char *text, uint32_t startIndex, 134 uint32_t len, int numGlyphs, uint32_t radius, const float* positions); 135 136 void setTextureFiltering(bool linearFiltering) { 137 mLinearFiltering = linearFiltering; 138 } 139 140 uint32_t getCacheSize(GLenum format) const; 141 142 private: 143 friend class Font; 144 145 const uint8_t* mGammaTable; 146 147 void allocateTextureMemory(CacheTexture* cacheTexture); 148 void deallocateTextureMemory(CacheTexture* cacheTexture); 149 void initTextTexture(); 150 CacheTexture* createCacheTexture(int width, int height, GLenum format, bool allocate); 151 void cacheBitmap(const SkGlyph& glyph, CachedGlyphInfo* cachedGlyph, 152 uint32_t *retOriginX, uint32_t *retOriginY, bool precaching); 153 CacheTexture* cacheBitmapInTexture(Vector<CacheTexture*>& cacheTextures, const SkGlyph& glyph, 154 uint32_t* startX, uint32_t* startY); 155 156 void flushAllAndInvalidate(); 157 158 void checkInit(); 159 void initRender(const Rect* clip, Rect* bounds, Functor* functor); 160 void finishRender(); 161 162 void issueDrawCommand(Vector<CacheTexture*>& cacheTextures); 163 void issueDrawCommand(); 164 void appendMeshQuadNoClip(float x1, float y1, float u1, float v1, 165 float x2, float y2, float u2, float v2, 166 float x3, float y3, float u3, float v3, 167 float x4, float y4, float u4, float v4, CacheTexture* texture); 168 void appendMeshQuad(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 appendRotatedMeshQuad(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); 176 177 void removeFont(const Font* font); 178 179 void checkTextureUpdate(); 180 181 void setTextureDirty() { 182 mUploadTexture = true; 183 } 184 185 uint32_t mSmallCacheWidth; 186 uint32_t mSmallCacheHeight; 187 uint32_t mLargeCacheWidth; 188 uint32_t mLargeCacheHeight; 189 190 Vector<CacheTexture*> mACacheTextures; 191 Vector<CacheTexture*> mRGBACacheTextures; 192 193 Font* mCurrentFont; 194 LruCache<Font::FontDescription, Font*> mActiveFonts; 195 196 CacheTexture* mCurrentCacheTexture; 197 198 bool mUploadTexture; 199 200 Functor* mFunctor; 201 const Rect* mClip; 202 Rect* mBounds; 203 bool mDrawn; 204 205 bool mInitialized; 206 207 bool mLinearFiltering; 208 209 #ifdef ANDROID_ENABLE_RENDERSCRIPT 210 // RS constructs 211 RSC::sp<RSC::RS> mRs; 212 RSC::sp<const RSC::Element> mRsElement; 213 RSC::sp<RSC::ScriptIntrinsicBlur> mRsScript; 214 #endif 215 216 static void computeGaussianWeights(float* weights, int32_t radius); 217 static void horizontalBlur(float* weights, int32_t radius, const uint8_t *source, uint8_t *dest, 218 int32_t width, int32_t height); 219 static void verticalBlur(float* weights, int32_t radius, const uint8_t *source, uint8_t *dest, 220 int32_t width, int32_t height); 221 222 // the input image handle may have its pointer replaced (to avoid copies) 223 void blurImage(uint8_t** image, int32_t width, int32_t height, int32_t radius); 224 }; 225 226 }; // namespace uirenderer 227 }; // namespace android 228 229 #endif // ANDROID_HWUI_FONT_RENDERER_H 230
