| /* |
| * Copyright (C) 2010 The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| #ifndef ANDROID_HWUI_FONT_RENDERER_H |
| #define ANDROID_HWUI_FONT_RENDERER_H |
| |
| #include <utils/LruCache.h> |
| #include <utils/Vector.h> |
| #include <utils/StrongPointer.h> |
| |
| #include <SkPaint.h> |
| |
| #include <GLES2/gl2.h> |
| |
| #include "font/FontUtil.h" |
| #include "font/CacheTexture.h" |
| #include "font/CachedGlyphInfo.h" |
| #include "font/Font.h" |
| #include "utils/SortedList.h" |
| #include "Matrix.h" |
| #include "Properties.h" |
| |
| #ifdef ANDROID_ENABLE_RENDERSCRIPT |
| namespace RSC { |
| class Element; |
| class RS; |
| class ScriptIntrinsicBlur; |
| } |
| #endif |
| |
| class Functor; |
| |
| namespace android { |
| namespace uirenderer { |
| |
| /////////////////////////////////////////////////////////////////////////////// |
| // Renderer |
| /////////////////////////////////////////////////////////////////////////////// |
| |
| class FontRenderer { |
| public: |
| FontRenderer(); |
| ~FontRenderer(); |
| |
| void flushLargeCaches(); |
| |
| void setGammaTable(const uint8_t* gammaTable) { |
| mGammaTable = gammaTable; |
| } |
| |
| void setFont(SkPaint* paint, const mat4& matrix); |
| |
| void precache(SkPaint* paint, const char* text, int numGlyphs, const mat4& matrix); |
| void endPrecaching(); |
| |
| // bounds is an out parameter |
| bool renderPosText(SkPaint* paint, const Rect* clip, const char *text, uint32_t startIndex, |
| uint32_t len, int numGlyphs, int x, int y, const float* positions, Rect* bounds, |
| Functor* functor, bool forceFinish = true); |
| |
| // bounds is an out parameter |
| bool renderTextOnPath(SkPaint* paint, const Rect* clip, const char *text, uint32_t startIndex, |
| uint32_t len, int numGlyphs, SkPath* path, float hOffset, float vOffset, Rect* bounds); |
| |
| struct DropShadow { |
| DropShadow() { }; |
| |
| DropShadow(const DropShadow& dropShadow): |
| width(dropShadow.width), height(dropShadow.height), |
| image(dropShadow.image), penX(dropShadow.penX), |
| penY(dropShadow.penY) { |
| } |
| |
| uint32_t width; |
| uint32_t height; |
| uint8_t* image; |
| int32_t penX; |
| int32_t penY; |
| }; |
| |
| // After renderDropShadow returns, the called owns the memory in DropShadow.image |
| // and is responsible for releasing it when it's done with it |
| DropShadow renderDropShadow(SkPaint* paint, const char *text, uint32_t startIndex, |
| uint32_t len, int numGlyphs, uint32_t radius, const float* positions); |
| |
| void setTextureFiltering(bool linearFiltering) { |
| mLinearFiltering = linearFiltering; |
| } |
| |
| uint32_t getCacheSize() const; |
| |
| private: |
| friend class Font; |
| |
| const uint8_t* mGammaTable; |
| |
| void allocateTextureMemory(CacheTexture* cacheTexture); |
| void deallocateTextureMemory(CacheTexture* cacheTexture); |
| void initTextTexture(); |
| CacheTexture* createCacheTexture(int width, int height, bool allocate); |
| void cacheBitmap(const SkGlyph& glyph, CachedGlyphInfo* cachedGlyph, |
| uint32_t *retOriginX, uint32_t *retOriginY, bool precaching); |
| CacheTexture* cacheBitmapInTexture(const SkGlyph& glyph, uint32_t* startX, uint32_t* startY); |
| |
| void flushAllAndInvalidate(); |
| |
| void checkInit(); |
| void initRender(const Rect* clip, Rect* bounds, Functor* functor); |
| void finishRender(); |
| |
| void issueDrawCommand(); |
| void appendMeshQuadNoClip(float x1, float y1, float u1, float v1, |
| float x2, float y2, float u2, float v2, |
| float x3, float y3, float u3, float v3, |
| float x4, float y4, float u4, float v4, CacheTexture* texture); |
| void appendMeshQuad(float x1, float y1, float u1, float v1, |
| float x2, float y2, float u2, float v2, |
| float x3, float y3, float u3, float v3, |
| float x4, float y4, float u4, float v4, CacheTexture* texture); |
| void appendRotatedMeshQuad(float x1, float y1, float u1, float v1, |
| float x2, float y2, float u2, float v2, |
| float x3, float y3, float u3, float v3, |
| float x4, float y4, float u4, float v4, CacheTexture* texture); |
| |
| void removeFont(const Font* font); |
| |
| void checkTextureUpdate(); |
| |
| void setTextureDirty() { |
| mUploadTexture = true; |
| } |
| |
| uint32_t mSmallCacheWidth; |
| uint32_t mSmallCacheHeight; |
| uint32_t mLargeCacheWidth; |
| uint32_t mLargeCacheHeight; |
| |
| Vector<CacheTexture*> mCacheTextures; |
| |
| Font* mCurrentFont; |
| LruCache<Font::FontDescription, Font*> mActiveFonts; |
| |
| CacheTexture* mCurrentCacheTexture; |
| |
| bool mUploadTexture; |
| |
| Functor* mFunctor; |
| const Rect* mClip; |
| Rect* mBounds; |
| bool mDrawn; |
| |
| bool mInitialized; |
| |
| bool mLinearFiltering; |
| |
| #ifdef ANDROID_ENABLE_RENDERSCRIPT |
| // RS constructs |
| sp<RSC::RS> mRs; |
| sp<const RSC::Element> mRsElement; |
| sp<RSC::ScriptIntrinsicBlur> mRsScript; |
| #endif |
| |
| static void computeGaussianWeights(float* weights, int32_t radius); |
| static void horizontalBlur(float* weights, int32_t radius, const uint8_t *source, uint8_t *dest, |
| int32_t width, int32_t height); |
| static void verticalBlur(float* weights, int32_t radius, const uint8_t *source, uint8_t *dest, |
| int32_t width, int32_t height); |
| |
| // the input image handle may have its pointer replaced (to avoid copies) |
| void blurImage(uint8_t** image, int32_t width, int32_t height, int32_t radius); |
| }; |
| |
| }; // namespace uirenderer |
| }; // namespace android |
| |
| #endif // ANDROID_HWUI_FONT_RENDERER_H |