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Unified Diff: skia/gl/SkGLTextCache.h

Issue 113827: Remove the remainder of the skia source code from the Chromium repo.... (Closed) Base URL: svn://chrome-svn/chrome/trunk/src/
Patch Set: Created 11 years, 7 months ago
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Index: skia/gl/SkGLTextCache.h
===================================================================
--- skia/gl/SkGLTextCache.h (revision 16859)
+++ skia/gl/SkGLTextCache.h (working copy)
@@ -1,86 +0,0 @@
-#ifndef SkGLTextCache_DEFINED
-#define SkGLTextCache_DEFINED
-
-#include "SkGL.h"
-
-class SkGlyph;
-
-class SkGLTextCache {
-public:
- SkGLTextCache();
- ~SkGLTextCache();
-
- /** Delete all of the strikes in the cache. Pass true if the texture IDs are
- still valid, in which case glDeleteTextures will be called. Pass false
- if they are invalid (e.g. the gl-context has changed), in which case
- they will just be abandoned.
- */
- void deleteAllStrikes(bool texturesAreValid);
-
- class Strike {
- public:
- int width() const { return fStrikeWidth; }
- int height() const { return fStrikeHeight; }
- GLuint texture() const { return fTexName; }
- int widthShift() const { return fStrikeWidthShift; }
- int heightShift() const { return fStrikeHeightShift; }
-
- // call this to force us to ignore the texture name in our destructor
- // only call it right before our destructor
- void abandonTexture() { fTexName = 0; }
-
- private:
- // if next is non-null, its height must match our height
- Strike(Strike* next, int width, int height);
- ~Strike();
-
- Strike* findGlyph(const SkGlyph&, int* offset);
- Strike* addGlyphAndBind(const SkGlyph&, const uint8_t*, int* offset);
-
- enum {
- kMinStrikeWidth = 1024,
- kMaxGlyphCount = 256
- };
-
- Strike* fNext;
- GLuint fTexName;
- uint32_t fGlyphIDArray[kMaxGlyphCount]; // stores glyphIDs
- uint16_t fGlyphOffsetX[kMaxGlyphCount]; // stores x-offsets
- uint16_t fGlyphCount;
- uint16_t fNextFreeOffsetX;
- uint16_t fStrikeWidth;
- uint16_t fStrikeHeight;
- uint8_t fStrikeWidthShift; // pow2(fStrikeWidth)
- uint8_t fStrikeHeightShift; // pow2(fStrikeHeight)
-
- friend class SkGLTextCache;
- };
-
- /** If found, returns the exact strike containing it (there may be more than
- one with a given height), and sets offset to the offset for that glyph
- (if not null). Does NOT bind the texture.
- If not found, returns null and ignores offset param.
- */
- Strike* findGlyph(const SkGlyph&, int* offset);
-
- /** Adds the specified glyph to this list of strikes, returning the new
- head of the list. If offset is not null, it is set to the offset
- for this glyph within the strike. The associated texture is bound
- to the gl context.
- */
- Strike* addGlyphAndBind(const SkGlyph&, const uint8_t image[], int* offset);
-
-private:
- enum {
- // greater than this we won't cache
- kMaxGlyphHeightShift = 9,
-
- kMaxGlyphHeight = 1 << kMaxGlyphHeightShift,
- kMaxStrikeListCount = kMaxGlyphHeightShift + 1
- };
-
- // heads of the N families, one for each pow2 height
- Strike* fStrikeList[kMaxStrikeListCount];
-};
-
-#endif
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