| /* |
| * Copyright (C) 2012 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_H |
| #define ANDROID_HWUI_FONT_H |
| |
| #include <utils/KeyedVector.h> |
| |
| #include <SkScalerContext.h> |
| #include <SkPaint.h> |
| #include <SkPathMeasure.h> |
| |
| #include "CachedGlyphInfo.h" |
| #include "../Rect.h" |
| #include "../Matrix.h" |
| |
| namespace android { |
| namespace uirenderer { |
| |
| /////////////////////////////////////////////////////////////////////////////// |
| // Font |
| /////////////////////////////////////////////////////////////////////////////// |
| |
| class FontRenderer; |
| |
| /** |
| * Represents a font, defined by a Skia font id and a font size. A font is used |
| * to generate glyphs and cache them in the FontState. |
| */ |
| class Font { |
| public: |
| enum Style { |
| kFakeBold = 1 |
| }; |
| |
| struct FontDescription { |
| FontDescription(const SkPaint* paint, const mat4& matrix); |
| |
| static int compare(const FontDescription& lhs, const FontDescription& rhs); |
| |
| hash_t hash() const; |
| |
| bool operator==(const FontDescription& other) const { |
| return compare(*this, other) == 0; |
| } |
| |
| bool operator!=(const FontDescription& other) const { |
| return compare(*this, other) != 0; |
| } |
| |
| SkFontID mFontId; |
| float mFontSize; |
| int mFlags; |
| float mItalicStyle; |
| float mScaleX; |
| uint8_t mStyle; |
| float mStrokeWidth; |
| bool mAntiAliasing; |
| SkMatrix mLookupTransform; |
| }; |
| |
| ~Font(); |
| |
| void render(SkPaint* paint, const char* text, uint32_t start, uint32_t len, |
| int numGlyphs, int x, int y, const float* positions); |
| |
| void render(SkPaint* paint, const char* text, uint32_t start, uint32_t len, |
| int numGlyphs, SkPath* path, float hOffset, float vOffset); |
| |
| const Font::FontDescription& getDescription() const { |
| return mDescription; |
| } |
| |
| /** |
| * Creates a new font associated with the specified font state. |
| */ |
| static Font* create(FontRenderer* state, const SkPaint* paint, const mat4& matrix); |
| |
| private: |
| friend class FontRenderer; |
| |
| Font(FontRenderer* state, const Font::FontDescription& desc); |
| |
| typedef void (Font::*RenderGlyph)(CachedGlyphInfo*, int, int, uint8_t*, |
| uint32_t, uint32_t, Rect*, const float*); |
| |
| enum RenderMode { |
| FRAMEBUFFER, |
| BITMAP, |
| MEASURE, |
| }; |
| |
| void precache(SkPaint* paint, const char* text, int numGlyphs); |
| |
| void render(SkPaint* paint, const char *text, uint32_t start, uint32_t len, |
| int numGlyphs, int x, int y, RenderMode mode, uint8_t *bitmap, |
| uint32_t bitmapW, uint32_t bitmapH, Rect *bounds, const float* positions); |
| |
| void measure(SkPaint* paint, const char* text, uint32_t start, uint32_t len, |
| int numGlyphs, Rect *bounds, const float* positions); |
| |
| void invalidateTextureCache(CacheTexture* cacheTexture = NULL); |
| |
| CachedGlyphInfo* cacheGlyph(SkPaint* paint, glyph_t glyph, bool precaching); |
| void updateGlyphCache(SkPaint* paint, const SkGlyph& skiaGlyph, CachedGlyphInfo* glyph, |
| bool precaching); |
| |
| void measureCachedGlyph(CachedGlyphInfo* glyph, int x, int y, |
| uint8_t *bitmap, uint32_t bitmapW, uint32_t bitmapH, |
| Rect* bounds, const float* pos); |
| void drawCachedGlyph(CachedGlyphInfo* glyph, int x, int y, |
| uint8_t *bitmap, uint32_t bitmapW, uint32_t bitmapH, |
| Rect* bounds, const float* pos); |
| void drawCachedGlyphPerspective(CachedGlyphInfo* glyph, int x, int y, |
| uint8_t *bitmap, uint32_t bitmapW, uint32_t bitmapH, |
| Rect* bounds, const float* pos); |
| void drawCachedGlyphBitmap(CachedGlyphInfo* glyph, int x, int y, |
| uint8_t *bitmap, uint32_t bitmapW, uint32_t bitmapH, |
| Rect* bounds, const float* pos); |
| void drawCachedGlyph(CachedGlyphInfo* glyph, float x, float hOffset, float vOffset, |
| SkPathMeasure& measure, SkPoint* position, SkVector* tangent); |
| |
| CachedGlyphInfo* getCachedGlyph(SkPaint* paint, glyph_t textUnit, bool precaching = false); |
| |
| FontRenderer* mState; |
| FontDescription mDescription; |
| |
| // Cache of glyphs |
| DefaultKeyedVector<glyph_t, CachedGlyphInfo*> mCachedGlyphs; |
| |
| mat4 mTransform; |
| }; |
| |
| inline int strictly_order_type(const Font::FontDescription& lhs, |
| const Font::FontDescription& rhs) { |
| return Font::FontDescription::compare(lhs, rhs) < 0; |
| } |
| |
| inline int compare_type(const Font::FontDescription& lhs, const Font::FontDescription& rhs) { |
| return Font::FontDescription::compare(lhs, rhs); |
| } |
| |
| inline hash_t hash_type(const Font::FontDescription& entry) { |
| return entry.hash(); |
| } |
| |
| }; // namespace uirenderer |
| }; // namespace android |
| |
| #endif // ANDROID_HWUI_FONT_H |