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comparison: gfx/skia/trunk/include/gpu/GrGlyph.h
gfx/skia/trunk/include/gpu/GrGlyph.h
- branch
- TOR_BUG_9701
- changeset 9
- a63d609f5ebe
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replaced
| -1:000000000000 | 0:59af0645d2f3 |
|---|---|
| 1 /* | |
| 2 * Copyright 2010 Google Inc. | |
| 3 * | |
| 4 * Use of this source code is governed by a BSD-style license that can be | |
| 5 * found in the LICENSE file. | |
| 6 */ | |
| 7 | |
| 8 #ifndef GrGlyph_DEFINED | |
| 9 #define GrGlyph_DEFINED | |
| 10 | |
| 11 #include "GrRect.h" | |
| 12 #include "SkPath.h" | |
| 13 | |
| 14 class GrPlot; | |
| 15 | |
| 16 /* Need this to be quad-state: | |
| 17 - complete w/ image | |
| 18 - just metrics | |
| 19 - failed to get image, but has metrics | |
| 20 - failed to get metrics | |
| 21 */ | |
| 22 struct GrGlyph { | |
| 23 typedef uint32_t PackedID; | |
| 24 | |
| 25 GrPlot* fPlot; | |
| 26 SkPath* fPath; | |
| 27 PackedID fPackedID; | |
| 28 GrIRect16 fBounds; | |
| 29 GrIPoint16 fAtlasLocation; | |
| 30 | |
| 31 void init(GrGlyph::PackedID packed, const SkIRect& bounds) { | |
| 32 fPlot = NULL; | |
| 33 fPath = NULL; | |
| 34 fPackedID = packed; | |
| 35 fBounds.set(bounds); | |
| 36 fAtlasLocation.set(0, 0); | |
| 37 } | |
| 38 | |
| 39 void free() { | |
| 40 if (fPath) { | |
| 41 delete fPath; | |
| 42 fPath = NULL; | |
| 43 } | |
| 44 } | |
| 45 | |
| 46 int width() const { return fBounds.width(); } | |
| 47 int height() const { return fBounds.height(); } | |
| 48 bool isEmpty() const { return fBounds.isEmpty(); } | |
| 49 uint16_t glyphID() const { return UnpackID(fPackedID); } | |
| 50 | |
| 51 /////////////////////////////////////////////////////////////////////////// | |
| 52 | |
| 53 static inline unsigned ExtractSubPixelBitsFromFixed(GrFixed pos) { | |
| 54 // two most significant fraction bits from fixed-point | |
| 55 return (pos >> 14) & 3; | |
| 56 } | |
| 57 | |
| 58 static inline PackedID Pack(uint16_t glyphID, GrFixed x, GrFixed y) { | |
| 59 x = ExtractSubPixelBitsFromFixed(x); | |
| 60 y = ExtractSubPixelBitsFromFixed(y); | |
| 61 return (x << 18) | (y << 16) | glyphID; | |
| 62 } | |
| 63 | |
| 64 static inline GrFixed UnpackFixedX(PackedID packed) { | |
| 65 return ((packed >> 18) & 3) << 14; | |
| 66 } | |
| 67 | |
| 68 static inline GrFixed UnpackFixedY(PackedID packed) { | |
| 69 return ((packed >> 16) & 3) << 14; | |
| 70 } | |
| 71 | |
| 72 static inline uint16_t UnpackID(PackedID packed) { | |
| 73 return (uint16_t)packed; | |
| 74 } | |
| 75 }; | |
| 76 | |
| 77 | |
| 78 #endif |
