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| 1 #include "SkScalerContext.h" | |
| 2 #include "SkBitmap.h" | |
| 3 #include "SkCanvas.h" | |
| 4 #include "SkDescriptor.h" | |
| 5 #include "SkFDot6.h" | |
| 6 #include "SkFontHost.h" | |
| 7 #include "SkMask.h" | |
| 8 #include "SkStream.h" | |
| 9 #include "SkString.h" | |
| 10 #include "SkThread.h" | |
| 11 #include "SkTemplates.h" | |
| 12 | |
| 13 #include <acaapi.h> | |
| 14 | |
| 15 ////////////////////////////////////////////////////////////////////////// | |
| 16 | |
| 17 #include "SkMMapStream.h" | |
| 18 | |
| 19 class SkScalerContext_Ascender : public SkScalerContext { | |
| 20 public: | |
| 21 SkScalerContext_Ascender(const SkDescriptor* desc); | |
| 22 virtual ~SkScalerContext_Ascender(); | |
| 23 | |
| 24 protected: | |
| 25 virtual unsigned generateGlyphCount() const; | |
| 26 virtual uint16_t generateCharToGlyph(SkUnichar uni); | |
| 27 virtual void generateMetrics(SkGlyph* glyph); | |
| 28 virtual void generateImage(const SkGlyph& glyph); | |
| 29 virtual void generatePath(const SkGlyph& glyph, SkPath* path); | |
| 30 virtual void generateFontMetrics(SkPaint::FontMetrics* mx, SkPaint::FontMetr
ics* my); | |
| 31 | |
| 32 private: | |
| 33 aca_FontHandle fHandle; | |
| 34 void* fWorkspace; | |
| 35 void* fGlyphWorkspace; | |
| 36 SkStream* fFontStream; | |
| 37 SkStream* fHintStream; | |
| 38 }; | |
| 39 | |
| 40 /////////////////////////////////////////////////////////////////////////// | |
| 41 /////////////////////////////////////////////////////////////////////////// | |
| 42 | |
| 43 SkScalerContext_Ascender::SkScalerContext_Ascender(const SkDescriptor* desc) | |
| 44 : SkScalerContext(desc) | |
| 45 { | |
| 46 int size = aca_Get_FontHandleRec_Size(); | |
| 47 fHandle = (aca_FontHandle)sk_malloc_throw(size); | |
| 48 | |
| 49 // get the pointer to the font | |
| 50 | |
| 51 fFontStream = new SkMMAPStream("/UcsGB2312-Hei-H.FDL"); | |
| 52 fHintStream = new SkMMAPStream("/genv6-23.bin"); | |
| 53 | |
| 54 void* hints = sk_malloc_throw(fHintStream->getLength()); | |
| 55 memcpy(hints, fHintStream->getMemoryBase(), fHintStream->getLength()); | |
| 56 | |
| 57 aca_Create_Font_Handle(fHandle, | |
| 58 (void*)fFontStream->getMemoryBase(), fFontStream->get
Length(), | |
| 59 "fred", | |
| 60 hints, fHintStream->getLength()); | |
| 61 | |
| 62 // compute our factors from the record | |
| 63 | |
| 64 SkMatrix m; | |
| 65 | |
| 66 fRec.getSingleMatrix(&m); | |
| 67 | |
| 68 // now compute our scale factors | |
| 69 SkScalar sx = m.getScaleX(); | |
| 70 SkScalar sy = m.getScaleY(); | |
| 71 | |
| 72 int ppemX = SkScalarRound(sx); | |
| 73 int ppemY = SkScalarRound(sy); | |
| 74 | |
| 75 size = aca_Find_Font_Memory_Required(fHandle, ppemX, ppemY); | |
| 76 size *= 8; // Jeff suggests this :) | |
| 77 fWorkspace = sk_malloc_throw(size); | |
| 78 aca_Set_Font_Memory(fHandle, (uint8_t*)fWorkspace, size); | |
| 79 | |
| 80 aca_GlyphAttribsRec rec; | |
| 81 | |
| 82 memset(&rec, 0, sizeof(rec)); | |
| 83 rec.xSize = ppemX; | |
| 84 rec.ySize = ppemY; | |
| 85 rec.doAdjust = true; | |
| 86 rec.doExceptions = true; | |
| 87 rec.doGlyphHints = true; | |
| 88 rec.doInterpolate = true; | |
| 89 rec.grayMode = 2; | |
| 90 aca_Set_Font_Attributes(fHandle, &rec, &size); | |
| 91 | |
| 92 fGlyphWorkspace = sk_malloc_throw(size); | |
| 93 aca_Set_Glyph_Memory(fHandle, fGlyphWorkspace); | |
| 94 } | |
| 95 | |
| 96 SkScalerContext_Ascender::~SkScalerContext_Ascender() | |
| 97 { | |
| 98 delete fHintStream; | |
| 99 delete fFontStream; | |
| 100 sk_free(fGlyphWorkspace); | |
| 101 sk_free(fWorkspace); | |
| 102 sk_free(fHandle); | |
| 103 } | |
| 104 | |
| 105 unsigned SkScalerContext_Ascender::generateGlyphCount() const | |
| 106 { | |
| 107 return 1000; | |
| 108 } | |
| 109 | |
| 110 uint16_t SkScalerContext_Ascender::generateCharToGlyph(SkUnichar uni) | |
| 111 { | |
| 112 return (uint16_t)(uni & 0xFFFF); | |
| 113 } | |
| 114 | |
| 115 void SkScalerContext_Ascender::generateMetrics(SkGlyph* glyph) | |
| 116 { | |
| 117 glyph->fRsbDelta = 0; | |
| 118 glyph->fLsbDelta = 0; | |
| 119 | |
| 120 aca_GlyphImageRec rec; | |
| 121 aca_Vector topLeft; | |
| 122 | |
| 123 int adv = aca_Get_Adv_Width(fHandle, glyph->getGlyphID()); | |
| 124 if (aca_GLYPH_NOT_PRESENT == adv) | |
| 125 goto ERROR; | |
| 126 | |
| 127 aca_Rasterize(glyph->getGlyphID(), fHandle, &rec, &topLeft); | |
| 128 | |
| 129 if (false) // error | |
| 130 { | |
| 131 ERROR: | |
| 132 glyph->fWidth = 0; | |
| 133 glyph->fHeight = 0; | |
| 134 glyph->fTop = 0; | |
| 135 glyph->fLeft = 0; | |
| 136 glyph->fAdvanceX = 0; | |
| 137 glyph->fAdvanceY = 0; | |
| 138 return; | |
| 139 } | |
| 140 | |
| 141 glyph->fWidth = rec.width; | |
| 142 glyph->fHeight = rec.rows; | |
| 143 glyph->fRowBytes = rec.width; | |
| 144 glyph->fTop = -topLeft.y; | |
| 145 glyph->fLeft = topLeft.x; | |
| 146 glyph->fAdvanceX = SkIntToFixed(adv); | |
| 147 glyph->fAdvanceY = SkIntToFixed(0); | |
| 148 } | |
| 149 | |
| 150 void SkScalerContext_Ascender::generateImage(const SkGlyph& glyph) | |
| 151 { | |
| 152 aca_GlyphImageRec rec; | |
| 153 aca_Vector topLeft; | |
| 154 | |
| 155 aca_Rasterize(glyph.getGlyphID(), fHandle, &rec, &topLeft); | |
| 156 | |
| 157 const uint8_t* src = (const uint8_t*)rec.buffer; | |
| 158 uint8_t* dst = (uint8_t*)glyph.fImage; | |
| 159 int height = glyph.fHeight; | |
| 160 | |
| 161 src += rec.y0 * rec.pitch + rec.x0; | |
| 162 while (--height >= 0) | |
| 163 { | |
| 164 memcpy(dst, src, glyph.fWidth); | |
| 165 src += rec.pitch; | |
| 166 dst += glyph.fRowBytes; | |
| 167 } | |
| 168 } | |
| 169 | |
| 170 ////////////////////////////////////////////////////////////////////////////////
/////////// | |
| 171 | |
| 172 void SkScalerContext_Ascender::generatePath(const SkGlyph& glyph, SkPath* path) | |
| 173 { | |
| 174 SkRect r; | |
| 175 | |
| 176 r.set(0, 0, SkIntToScalar(4), SkIntToScalar(4)); | |
| 177 path->reset(); | |
| 178 path->addRect(r); | |
| 179 } | |
| 180 | |
| 181 void SkScalerContext_Ascender::generateFontMetrics(SkPaint::FontMetrics* mx, SkP
aint::FontMetrics* my) | |
| 182 { | |
| 183 if (NULL == mx && NULL == my) | |
| 184 return; | |
| 185 | |
| 186 if (mx) | |
| 187 { | |
| 188 mx->fTop = SkIntToScalar(-16); | |
| 189 mx->fAscent = SkIntToScalar(-16); | |
| 190 mx->fDescent = SkIntToScalar(4); | |
| 191 mx->fBottom = SkIntToScalar(4); | |
| 192 mx->fLeading = 0; | |
| 193 } | |
| 194 if (my) | |
| 195 { | |
| 196 my->fTop = SkIntToScalar(-16); | |
| 197 my->fAscent = SkIntToScalar(-16); | |
| 198 my->fDescent = SkIntToScalar(4); | |
| 199 my->fBottom = SkIntToScalar(4); | |
| 200 my->fLeading = 0; | |
| 201 } | |
| 202 } | |
| 203 | |
| 204 //////////////////////////////////////////////////////////////////////// | |
| 205 //////////////////////////////////////////////////////////////////////// | |
| 206 | |
| 207 SkScalerContext* SkFontHost::CreateScalerContext(const SkDescriptor* desc) | |
| 208 { | |
| 209 return SkNEW_ARGS(SkScalerContext_Ascender, (desc)); | |
| 210 } | |
| 211 | |
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Chromium Code Reviews
Issue 113827:
Remove the remainder of the skia source code from the Chromium repo.... (Closed)
Base URL: svn://chrome-svn/chrome/trunk/src/