9f5dab3fc2
FontRenderer.h defined several classes and structures that now live in the font/ folder. This will make the code easier to read and maintain. Change-Id: I3dc044e9bde1d6515f8704f5c72462877d279fe2
131 lines
4.4 KiB
C++
131 lines
4.4 KiB
C++
/*
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* Copyright (C) 2012 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#ifndef ANDROID_HWUI_FONT_H
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#define ANDROID_HWUI_FONT_H
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#include <utils/KeyedVector.h>
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#include <SkScalerContext.h>
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#include <SkPaint.h>
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#include <SkPathMeasure.h>
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#include "CachedGlyphInfo.h"
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#include "../Rect.h"
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namespace android {
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namespace uirenderer {
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///////////////////////////////////////////////////////////////////////////////
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// Font
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///////////////////////////////////////////////////////////////////////////////
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class FontRenderer;
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/**
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* Represents a font, defined by a Skia font id and a font size. A font is used
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* to generate glyphs and cache them in the FontState.
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*/
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class Font {
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public:
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enum Style {
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kFakeBold = 1
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};
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~Font();
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/**
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* Renders the specified string of text.
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* If bitmap is specified, it will be used as the render target
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*/
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void render(SkPaint* paint, const char *text, uint32_t start, uint32_t len,
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int numGlyphs, int x, int y, uint8_t *bitmap = NULL,
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uint32_t bitmapW = 0, uint32_t bitmapH = 0);
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void render(SkPaint* paint, const char *text, uint32_t start, uint32_t len,
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int numGlyphs, int x, int y, const float* positions);
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void render(SkPaint* paint, const char *text, uint32_t start, uint32_t len,
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int numGlyphs, SkPath* path, float hOffset, float vOffset);
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/**
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* Creates a new font associated with the specified font state.
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*/
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static Font* create(FontRenderer* state, uint32_t fontId, float fontSize,
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int flags, uint32_t italicStyle, uint32_t scaleX, SkPaint::Style style,
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uint32_t strokeWidth);
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private:
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friend class FontRenderer;
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typedef void (Font::*RenderGlyph)(CachedGlyphInfo*, int, int, uint8_t*,
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uint32_t, uint32_t, Rect*, const float*);
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enum RenderMode {
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FRAMEBUFFER,
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BITMAP,
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MEASURE,
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};
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void precache(SkPaint* paint, const char* text, int numGlyphs);
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void render(SkPaint* paint, const char *text, uint32_t start, uint32_t len,
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int numGlyphs, int x, int y, RenderMode mode, uint8_t *bitmap,
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uint32_t bitmapW, uint32_t bitmapH, Rect *bounds, const float* positions);
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void measure(SkPaint* paint, const char* text, uint32_t start, uint32_t len,
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int numGlyphs, Rect *bounds, const float* positions);
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Font(FontRenderer* state, uint32_t fontId, float fontSize, int flags, uint32_t italicStyle,
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uint32_t scaleX, SkPaint::Style style, uint32_t strokeWidth);
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// Cache of glyphs
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DefaultKeyedVector<glyph_t, CachedGlyphInfo*> mCachedGlyphs;
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void invalidateTextureCache(CacheTexture *cacheTexture = NULL);
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CachedGlyphInfo* cacheGlyph(SkPaint* paint, glyph_t glyph, bool precaching);
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void updateGlyphCache(SkPaint* paint, const SkGlyph& skiaGlyph, CachedGlyphInfo* glyph,
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bool precaching);
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void measureCachedGlyph(CachedGlyphInfo* glyph, int x, int y,
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uint8_t *bitmap, uint32_t bitmapW, uint32_t bitmapH,
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Rect* bounds, const float* pos);
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void drawCachedGlyph(CachedGlyphInfo* glyph, int x, int y,
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uint8_t *bitmap, uint32_t bitmapW, uint32_t bitmapH,
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Rect* bounds, const float* pos);
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void drawCachedGlyphBitmap(CachedGlyphInfo* glyph, int x, int y,
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uint8_t *bitmap, uint32_t bitmapW, uint32_t bitmapH,
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Rect* bounds, const float* pos);
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void drawCachedGlyph(CachedGlyphInfo* glyph, float x, float hOffset, float vOffset,
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SkPathMeasure& measure, SkPoint* position, SkVector* tangent);
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CachedGlyphInfo* getCachedGlyph(SkPaint* paint, glyph_t textUnit, bool precaching = false);
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FontRenderer* mState;
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uint32_t mFontId;
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float mFontSize;
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int mFlags;
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uint32_t mItalicStyle;
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uint32_t mScaleX;
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SkPaint::Style mStyle;
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uint32_t mStrokeWidth;
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};
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}; // namespace uirenderer
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}; // namespace android
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#endif // ANDROID_HWUI_FONT_H
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