FontRenderer.h revision 9b1204baf4740b4d443e72157dea98571cf84e1f
1694b519ac647fe998fd396fe0784cc8e179aadc4Romain Guy/* 2694b519ac647fe998fd396fe0784cc8e179aadc4Romain Guy * Copyright (C) 2010 The Android Open Source Project 3694b519ac647fe998fd396fe0784cc8e179aadc4Romain Guy * 4694b519ac647fe998fd396fe0784cc8e179aadc4Romain Guy * Licensed under the Apache License, Version 2.0 (the "License"); 5694b519ac647fe998fd396fe0784cc8e179aadc4Romain Guy * you may not use this file except in compliance with the License. 6694b519ac647fe998fd396fe0784cc8e179aadc4Romain Guy * You may obtain a copy of the License at 7694b519ac647fe998fd396fe0784cc8e179aadc4Romain Guy * 8694b519ac647fe998fd396fe0784cc8e179aadc4Romain Guy * http://www.apache.org/licenses/LICENSE-2.0 9694b519ac647fe998fd396fe0784cc8e179aadc4Romain Guy * 10694b519ac647fe998fd396fe0784cc8e179aadc4Romain Guy * Unless required by applicable law or agreed to in writing, software 11694b519ac647fe998fd396fe0784cc8e179aadc4Romain Guy * distributed under the License is distributed on an "AS IS" BASIS, 12694b519ac647fe998fd396fe0784cc8e179aadc4Romain Guy * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13694b519ac647fe998fd396fe0784cc8e179aadc4Romain Guy * See the License for the specific language governing permissions and 14694b519ac647fe998fd396fe0784cc8e179aadc4Romain Guy * limitations under the License. 15694b519ac647fe998fd396fe0784cc8e179aadc4Romain Guy */ 16694b519ac647fe998fd396fe0784cc8e179aadc4Romain Guy 175b3b35296e8b2c8d3f07d32bb645d5414db41a1dRomain Guy#ifndef ANDROID_HWUI_FONT_RENDERER_H 185b3b35296e8b2c8d3f07d32bb645d5414db41a1dRomain Guy#define ANDROID_HWUI_FONT_RENDERER_H 19694b519ac647fe998fd396fe0784cc8e179aadc4Romain Guy 20694b519ac647fe998fd396fe0784cc8e179aadc4Romain Guy#include <utils/Vector.h> 21694b519ac647fe998fd396fe0784cc8e179aadc4Romain Guy 22694b519ac647fe998fd396fe0784cc8e179aadc4Romain Guy#include <SkPaint.h> 23694b519ac647fe998fd396fe0784cc8e179aadc4Romain Guy 24694b519ac647fe998fd396fe0784cc8e179aadc4Romain Guy#include <GLES2/gl2.h> 25694b519ac647fe998fd396fe0784cc8e179aadc4Romain Guy 269f5dab3fc228fa11c32b483e6101ec086895a32bRomain Guy#include "font/FontUtil.h" 279f5dab3fc228fa11c32b483e6101ec086895a32bRomain Guy#include "font/CacheTexture.h" 289f5dab3fc228fa11c32b483e6101ec086895a32bRomain Guy#include "font/CachedGlyphInfo.h" 299f5dab3fc228fa11c32b483e6101ec086895a32bRomain Guy#include "font/Font.h" 3051769a68a5cb34e9564740c6a854fcb93018789dRomain Guy#include "Properties.h" 3109147fbdc8206a0cac78bfe9083e7e15b3c5689cRomain Guy 32694b519ac647fe998fd396fe0784cc8e179aadc4Romain Guynamespace android { 33694b519ac647fe998fd396fe0784cc8e179aadc4Romain Guynamespace uirenderer { 34694b519ac647fe998fd396fe0784cc8e179aadc4Romain Guy 35726aeba80ffc6778a9bc3e0ee957b8d644183505Romain Guy/////////////////////////////////////////////////////////////////////////////// 36726aeba80ffc6778a9bc3e0ee957b8d644183505Romain Guy// Renderer 37726aeba80ffc6778a9bc3e0ee957b8d644183505Romain Guy/////////////////////////////////////////////////////////////////////////////// 38726aeba80ffc6778a9bc3e0ee957b8d644183505Romain Guy 39694b519ac647fe998fd396fe0784cc8e179aadc4Romain Guyclass FontRenderer { 40694b519ac647fe998fd396fe0784cc8e179aadc4Romain Guypublic: 41694b519ac647fe998fd396fe0784cc8e179aadc4Romain Guy FontRenderer(); 42694b519ac647fe998fd396fe0784cc8e179aadc4Romain Guy ~FontRenderer(); 43694b519ac647fe998fd396fe0784cc8e179aadc4Romain Guy 449a8245629d69d81e0b62e52970feaf9c02580e75Chet Haase void flushLargeCaches(); 45694b519ac647fe998fd396fe0784cc8e179aadc4Romain Guy 46b45c0c9774bd19a9dbe77d149abae4e124b08bf6Romain Guy void setGammaTable(const uint8_t* gammaTable) { 47b45c0c9774bd19a9dbe77d149abae4e124b08bf6Romain Guy mGammaTable = gammaTable; 48b45c0c9774bd19a9dbe77d149abae4e124b08bf6Romain Guy } 49b45c0c9774bd19a9dbe77d149abae4e124b08bf6Romain Guy 5065ef909776c03417d8b597738da54ca211e37e4fAlex Sakhartchouk void setFont(SkPaint* paint, uint32_t fontId, float fontSize); 51e816baea651476aca4407200d4a5e629b9ab8dfaChet Haase 52e816baea651476aca4407200d4a5e629b9ab8dfaChet Haase void precache(SkPaint* paint, const char* text, int numGlyphs); 53e816baea651476aca4407200d4a5e629b9ab8dfaChet Haase 54671d6cf460531825a321edb200523d0faa7792c9Romain Guy // bounds is an out parameter 555b3b35296e8b2c8d3f07d32bb645d5414db41a1dRomain Guy bool renderText(SkPaint* paint, const Rect* clip, const char *text, uint32_t startIndex, 565b3b35296e8b2c8d3f07d32bb645d5414db41a1dRomain Guy uint32_t len, int numGlyphs, int x, int y, Rect* bounds); 57671d6cf460531825a321edb200523d0faa7792c9Romain Guy // bounds is an out parameter 58671d6cf460531825a321edb200523d0faa7792c9Romain Guy bool renderPosText(SkPaint* paint, const Rect* clip, const char *text, uint32_t startIndex, 59671d6cf460531825a321edb200523d0faa7792c9Romain Guy uint32_t len, int numGlyphs, int x, int y, const float* positions, Rect* bounds); 609777173eb6c9eb97c7921c8288ebc65e3ab3ce6fRomain Guy // bounds is an out parameter 619777173eb6c9eb97c7921c8288ebc65e3ab3ce6fRomain Guy bool renderTextOnPath(SkPaint* paint, const Rect* clip, const char *text, uint32_t startIndex, 629777173eb6c9eb97c7921c8288ebc65e3ab3ce6fRomain Guy uint32_t len, int numGlyphs, SkPath* path, float hOffset, float vOffset, Rect* bounds); 63694b519ac647fe998fd396fe0784cc8e179aadc4Romain Guy 64f18136cb3c881a9d16c1a4f0f341732c276936bfAlex Sakhartchouk struct DropShadow { 651e45aae5de003657e5d18f74d34998f5de5db5b7Romain Guy DropShadow() { }; 661e45aae5de003657e5d18f74d34998f5de5db5b7Romain Guy 671e45aae5de003657e5d18f74d34998f5de5db5b7Romain Guy DropShadow(const DropShadow& dropShadow): 681e45aae5de003657e5d18f74d34998f5de5db5b7Romain Guy width(dropShadow.width), height(dropShadow.height), 691e45aae5de003657e5d18f74d34998f5de5db5b7Romain Guy image(dropShadow.image), penX(dropShadow.penX), 701e45aae5de003657e5d18f74d34998f5de5db5b7Romain Guy penY(dropShadow.penY) { 711e45aae5de003657e5d18f74d34998f5de5db5b7Romain Guy } 721e45aae5de003657e5d18f74d34998f5de5db5b7Romain Guy 73f18136cb3c881a9d16c1a4f0f341732c276936bfAlex Sakhartchouk uint32_t width; 74f18136cb3c881a9d16c1a4f0f341732c276936bfAlex Sakhartchouk uint32_t height; 75f18136cb3c881a9d16c1a4f0f341732c276936bfAlex Sakhartchouk uint8_t* image; 76f18136cb3c881a9d16c1a4f0f341732c276936bfAlex Sakhartchouk int32_t penX; 77f18136cb3c881a9d16c1a4f0f341732c276936bfAlex Sakhartchouk int32_t penY; 78f18136cb3c881a9d16c1a4f0f341732c276936bfAlex Sakhartchouk }; 79f18136cb3c881a9d16c1a4f0f341732c276936bfAlex Sakhartchouk 80f18136cb3c881a9d16c1a4f0f341732c276936bfAlex Sakhartchouk // After renderDropShadow returns, the called owns the memory in DropShadow.image 81f18136cb3c881a9d16c1a4f0f341732c276936bfAlex Sakhartchouk // and is responsible for releasing it when it's done with it 82f18136cb3c881a9d16c1a4f0f341732c276936bfAlex Sakhartchouk DropShadow renderDropShadow(SkPaint* paint, const char *text, uint32_t startIndex, 83416a847633680d94efb926837efdc18726d54918Raph Levien uint32_t len, int numGlyphs, uint32_t radius, const float* positions); 84f18136cb3c881a9d16c1a4f0f341732c276936bfAlex Sakhartchouk 85e8cb9c14309b0f01c0159efdf9a7198f44a62642Romain Guy GLuint getTexture(bool linearFiltering = false) { 86694b519ac647fe998fd396fe0784cc8e179aadc4Romain Guy checkInit(); 87ae91c4cbc79ea910753be65e2f1d7899abcb4da2Romain Guy 882a47c14e2a6f152496b43104bc785c488583fd59Chet Haase if (linearFiltering != mCurrentCacheTexture->mLinearFiltering) { 892a47c14e2a6f152496b43104bc785c488583fd59Chet Haase mCurrentCacheTexture->mLinearFiltering = linearFiltering; 90e8cb9c14309b0f01c0159efdf9a7198f44a62642Romain Guy mLinearFiltering = linearFiltering; 91e8cb9c14309b0f01c0159efdf9a7198f44a62642Romain Guy const GLenum filtering = linearFiltering ? GL_LINEAR : GL_NEAREST; 92e8cb9c14309b0f01c0159efdf9a7198f44a62642Romain Guy 937de0cb12d0e5fd64811da0b5d1ae0c0d58b86f86Chet Haase glBindTexture(GL_TEXTURE_2D, mCurrentCacheTexture->mTextureId); 94e8cb9c14309b0f01c0159efdf9a7198f44a62642Romain Guy glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, filtering); 95e8cb9c14309b0f01c0159efdf9a7198f44a62642Romain Guy glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, filtering); 96e8cb9c14309b0f01c0159efdf9a7198f44a62642Romain Guy } 97ae91c4cbc79ea910753be65e2f1d7899abcb4da2Romain Guy 987de0cb12d0e5fd64811da0b5d1ae0c0d58b86f86Chet Haase return mCurrentCacheTexture->mTextureId; 99c15008e72ec00ca20a271c3006dac649fd07533bRomain Guy } 100c15008e72ec00ca20a271c3006dac649fd07533bRomain Guy 1017de0cb12d0e5fd64811da0b5d1ae0c0d58b86f86Chet Haase uint32_t getCacheSize() const { 1027de0cb12d0e5fd64811da0b5d1ae0c0d58b86f86Chet Haase uint32_t size = 0; 103378e919ccb75efe24d5a5aa75ac2c6ef255dcb48Chet Haase for (uint32_t i = 0; i < mCacheTextures.size(); i++) { 104378e919ccb75efe24d5a5aa75ac2c6ef255dcb48Chet Haase CacheTexture* cacheTexture = mCacheTextures[i]; 105378e919ccb75efe24d5a5aa75ac2c6ef255dcb48Chet Haase if (cacheTexture != NULL && cacheTexture->mTexture != NULL) { 106378e919ccb75efe24d5a5aa75ac2c6ef255dcb48Chet Haase size += cacheTexture->mWidth * cacheTexture->mHeight; 107378e919ccb75efe24d5a5aa75ac2c6ef255dcb48Chet Haase } 1087de0cb12d0e5fd64811da0b5d1ae0c0d58b86f86Chet Haase } 1097de0cb12d0e5fd64811da0b5d1ae0c0d58b86f86Chet Haase return size; 110c15008e72ec00ca20a271c3006dac649fd07533bRomain Guy } 111c15008e72ec00ca20a271c3006dac649fd07533bRomain Guy 1129b1204baf4740b4d443e72157dea98571cf84e1fRomain Guyprivate: 113694b519ac647fe998fd396fe0784cc8e179aadc4Romain Guy friend class Font; 114694b519ac647fe998fd396fe0784cc8e179aadc4Romain Guy 115b45c0c9774bd19a9dbe77d149abae4e124b08bf6Romain Guy const uint8_t* mGammaTable; 116b45c0c9774bd19a9dbe77d149abae4e124b08bf6Romain Guy 1172a47c14e2a6f152496b43104bc785c488583fd59Chet Haase void allocateTextureMemory(CacheTexture* cacheTexture); 1189a8245629d69d81e0b62e52970feaf9c02580e75Chet Haase void deallocateTextureMemory(CacheTexture* cacheTexture); 1197de0cb12d0e5fd64811da0b5d1ae0c0d58b86f86Chet Haase void initTextTexture(); 1209777173eb6c9eb97c7921c8288ebc65e3ab3ce6fRomain Guy CacheTexture* createCacheTexture(int width, int height, bool allocate); 1217de0cb12d0e5fd64811da0b5d1ae0c0d58b86f86Chet Haase void cacheBitmap(const SkGlyph& glyph, CachedGlyphInfo* cachedGlyph, 122f942cf10e04567f6b9456f6258e29c803b8bfb41Chet Haase uint32_t *retOriginX, uint32_t *retOriginY, bool precaching); 123378e919ccb75efe24d5a5aa75ac2c6ef255dcb48Chet Haase CacheTexture* cacheBitmapInTexture(const SkGlyph& glyph, uint32_t* startX, uint32_t* startY); 124694b519ac647fe998fd396fe0784cc8e179aadc4Romain Guy 125694b519ac647fe998fd396fe0784cc8e179aadc4Romain Guy void flushAllAndInvalidate(); 126694b519ac647fe998fd396fe0784cc8e179aadc4Romain Guy void initVertexArrayBuffers(); 127694b519ac647fe998fd396fe0784cc8e179aadc4Romain Guy 128694b519ac647fe998fd396fe0784cc8e179aadc4Romain Guy void checkInit(); 129671d6cf460531825a321edb200523d0faa7792c9Romain Guy void initRender(const Rect* clip, Rect* bounds); 130671d6cf460531825a321edb200523d0faa7792c9Romain Guy void finishRender(); 131694b519ac647fe998fd396fe0784cc8e179aadc4Romain Guy 132694b519ac647fe998fd396fe0784cc8e179aadc4Romain Guy void issueDrawCommand(); 1339777173eb6c9eb97c7921c8288ebc65e3ab3ce6fRomain Guy void appendMeshQuadNoClip(float x1, float y1, float u1, float v1, 1349777173eb6c9eb97c7921c8288ebc65e3ab3ce6fRomain Guy float x2, float y2, float u2, float v2, 1359777173eb6c9eb97c7921c8288ebc65e3ab3ce6fRomain Guy float x3, float y3, float u3, float v3, 1369777173eb6c9eb97c7921c8288ebc65e3ab3ce6fRomain Guy float x4, float y4, float u4, float v4, CacheTexture* texture); 137d71dd367af604571c7d00ca473184a1b9240eca2Romain Guy void appendMeshQuad(float x1, float y1, float u1, float v1, 138d71dd367af604571c7d00ca473184a1b9240eca2Romain Guy float x2, float y2, float u2, float v2, 139d71dd367af604571c7d00ca473184a1b9240eca2Romain Guy float x3, float y3, float u3, float v3, 1407de0cb12d0e5fd64811da0b5d1ae0c0d58b86f86Chet Haase float x4, float y4, float u4, float v4, CacheTexture* texture); 1419777173eb6c9eb97c7921c8288ebc65e3ab3ce6fRomain Guy void appendRotatedMeshQuad(float x1, float y1, float u1, float v1, 1429777173eb6c9eb97c7921c8288ebc65e3ab3ce6fRomain Guy float x2, float y2, float u2, float v2, 1439777173eb6c9eb97c7921c8288ebc65e3ab3ce6fRomain Guy float x3, float y3, float u3, float v3, 1449777173eb6c9eb97c7921c8288ebc65e3ab3ce6fRomain Guy float x4, float y4, float u4, float v4, CacheTexture* texture); 145694b519ac647fe998fd396fe0784cc8e179aadc4Romain Guy 1469b1204baf4740b4d443e72157dea98571cf84e1fRomain Guy void removeFont(const Font* font); 1479b1204baf4740b4d443e72157dea98571cf84e1fRomain Guy 1489b1204baf4740b4d443e72157dea98571cf84e1fRomain Guy void checkTextureUpdate(); 1499b1204baf4740b4d443e72157dea98571cf84e1fRomain Guy 1509b1204baf4740b4d443e72157dea98571cf84e1fRomain Guy void setTextureDirty() { 1519b1204baf4740b4d443e72157dea98571cf84e1fRomain Guy mUploadTexture = true; 1529b1204baf4740b4d443e72157dea98571cf84e1fRomain Guy } 1539b1204baf4740b4d443e72157dea98571cf84e1fRomain Guy 1547de0cb12d0e5fd64811da0b5d1ae0c0d58b86f86Chet Haase uint32_t mSmallCacheWidth; 1557de0cb12d0e5fd64811da0b5d1ae0c0d58b86f86Chet Haase uint32_t mSmallCacheHeight; 156eb32a499194119b3783b86c925172df02e5d2685Chet Haase uint32_t mLargeCacheWidth; 157eb32a499194119b3783b86c925172df02e5d2685Chet Haase uint32_t mLargeCacheHeight; 158694b519ac647fe998fd396fe0784cc8e179aadc4Romain Guy 159378e919ccb75efe24d5a5aa75ac2c6ef255dcb48Chet Haase Vector<CacheTexture*> mCacheTextures; 160694b519ac647fe998fd396fe0784cc8e179aadc4Romain Guy 16109147fbdc8206a0cac78bfe9083e7e15b3c5689cRomain Guy Font* mCurrentFont; 162694b519ac647fe998fd396fe0784cc8e179aadc4Romain Guy Vector<Font*> mActiveFonts; 163694b519ac647fe998fd396fe0784cc8e179aadc4Romain Guy 1647de0cb12d0e5fd64811da0b5d1ae0c0d58b86f86Chet Haase CacheTexture* mCurrentCacheTexture; 1657de0cb12d0e5fd64811da0b5d1ae0c0d58b86f86Chet Haase CacheTexture* mLastCacheTexture; 1667de0cb12d0e5fd64811da0b5d1ae0c0d58b86f86Chet Haase 167694b519ac647fe998fd396fe0784cc8e179aadc4Romain Guy bool mUploadTexture; 168694b519ac647fe998fd396fe0784cc8e179aadc4Romain Guy 169694b519ac647fe998fd396fe0784cc8e179aadc4Romain Guy // Pointer to vertex data to speed up frame to frame work 1709b1204baf4740b4d443e72157dea98571cf84e1fRomain Guy float* mTextMesh; 171694b519ac647fe998fd396fe0784cc8e179aadc4Romain Guy uint32_t mCurrentQuadIndex; 172694b519ac647fe998fd396fe0784cc8e179aadc4Romain Guy uint32_t mMaxNumberOfQuads; 173694b519ac647fe998fd396fe0784cc8e179aadc4Romain Guy 174694b519ac647fe998fd396fe0784cc8e179aadc4Romain Guy uint32_t mIndexBufferID; 175694b519ac647fe998fd396fe0784cc8e179aadc4Romain Guy 17609147fbdc8206a0cac78bfe9083e7e15b3c5689cRomain Guy const Rect* mClip; 1775b3b35296e8b2c8d3f07d32bb645d5414db41a1dRomain Guy Rect* mBounds; 1785b3b35296e8b2c8d3f07d32bb645d5414db41a1dRomain Guy bool mDrawn; 17909147fbdc8206a0cac78bfe9083e7e15b3c5689cRomain Guy 180694b519ac647fe998fd396fe0784cc8e179aadc4Romain Guy bool mInitialized; 18189a524ac2d4a36739e51b01b336c0bade77e2ee0Alex Sakhartchouk 182e8cb9c14309b0f01c0159efdf9a7198f44a62642Romain Guy bool mLinearFiltering; 183e8cb9c14309b0f01c0159efdf9a7198f44a62642Romain Guy 1849b1204baf4740b4d443e72157dea98571cf84e1fRomain Guy /** We should consider multi-threading this code or using Renderscript **/ 1859b1204baf4740b4d443e72157dea98571cf84e1fRomain Guy static void computeGaussianWeights(float* weights, int32_t radius); 1869b1204baf4740b4d443e72157dea98571cf84e1fRomain Guy static void horizontalBlur(float* weights, int32_t radius, const uint8_t *source, uint8_t *dest, 1871e45aae5de003657e5d18f74d34998f5de5db5b7Romain Guy int32_t width, int32_t height); 1889b1204baf4740b4d443e72157dea98571cf84e1fRomain Guy static void verticalBlur(float* weights, int32_t radius, const uint8_t *source, uint8_t *dest, 1891e45aae5de003657e5d18f74d34998f5de5db5b7Romain Guy int32_t width, int32_t height); 1909b1204baf4740b4d443e72157dea98571cf84e1fRomain Guy static void blurImage(uint8_t* image, int32_t width, int32_t height, int32_t radius); 191694b519ac647fe998fd396fe0784cc8e179aadc4Romain Guy}; 192694b519ac647fe998fd396fe0784cc8e179aadc4Romain Guy 193694b519ac647fe998fd396fe0784cc8e179aadc4Romain Guy}; // namespace uirenderer 194694b519ac647fe998fd396fe0784cc8e179aadc4Romain Guy}; // namespace android 195694b519ac647fe998fd396fe0784cc8e179aadc4Romain Guy 1965b3b35296e8b2c8d3f07d32bb645d5414db41a1dRomain Guy#endif // ANDROID_HWUI_FONT_RENDERER_H 197