1 #include <SkTypeface.h> 2 #include <SkPaint.h> 3 4 #include <minikin/MinikinFont.h> 5 #include "MinikinSkia.h" 6 7 namespace android { 8 9 MinikinFontSkia::MinikinFontSkia(SkTypeface *typeface) : 10 mTypeface(typeface) { 11 } 12 13 MinikinFontSkia::~MinikinFontSkia() { 14 SkSafeUnref(mTypeface); 15 } 16 17 bool MinikinFontSkia::GetGlyph(uint32_t codepoint, uint32_t *glyph) const { 18 SkPaint paint; 19 paint.setTypeface(mTypeface); 20 paint.setTextEncoding(SkPaint::kUTF32_TextEncoding); 21 uint16_t glyph16; 22 paint.textToGlyphs(&codepoint, sizeof(codepoint), &glyph16); 23 *glyph = glyph16; 24 //printf("glyph for U+%04x = %d\n", codepoint, glyph16); 25 return !!glyph; 26 } 27 28 static void MinikinFontSkia_SetSkiaPaint(SkTypeface* typeface, SkPaint* skPaint, const MinikinPaint& paint) { 29 skPaint->setTypeface(typeface); 30 skPaint->setTextEncoding(SkPaint::kGlyphID_TextEncoding); 31 // TODO: set more paint parameters from Minikin 32 skPaint->setTextSize(paint.size); 33 } 34 35 float MinikinFontSkia::GetHorizontalAdvance(uint32_t glyph_id, 36 const MinikinPaint &paint) const { 37 SkPaint skPaint; 38 uint16_t glyph16 = glyph_id; 39 SkScalar skWidth; 40 MinikinFontSkia_SetSkiaPaint(mTypeface, &skPaint, paint); 41 skPaint.getTextWidths(&glyph16, sizeof(glyph16), &skWidth, NULL); 42 #ifdef VERBOSE 43 ALOGD("width for typeface %d glyph %d = %f", mTypeface->uniqueID(), glyph_id 44 #endif 45 return skWidth; 46 } 47 48 void MinikinFontSkia::GetBounds(MinikinRect* bounds, uint32_t glyph_id, 49 const MinikinPaint& paint) const { 50 SkPaint skPaint; 51 uint16_t glyph16 = glyph_id; 52 SkRect skBounds; 53 MinikinFontSkia_SetSkiaPaint(mTypeface, &skPaint, paint); 54 skPaint.getTextWidths(&glyph16, sizeof(glyph16), NULL, &skBounds); 55 bounds->mLeft = skBounds.fLeft; 56 bounds->mTop = skBounds.fTop; 57 bounds->mRight = skBounds.fRight; 58 bounds->mBottom = skBounds.fBottom; 59 } 60 61 bool MinikinFontSkia::GetTable(uint32_t tag, uint8_t *buf, size_t *size) { 62 if (buf == NULL) { 63 const size_t tableSize = mTypeface->getTableSize(tag); 64 *size = tableSize; 65 return tableSize != 0; 66 } else { 67 const size_t actualSize = mTypeface->getTableData(tag, 0, *size, buf); 68 *size = actualSize; 69 return actualSize != 0; 70 } 71 } 72 73 SkTypeface *MinikinFontSkia::GetSkTypeface() { 74 return mTypeface; 75 } 76 77 int32_t MinikinFontSkia::GetUniqueId() const { 78 return mTypeface->uniqueID(); 79 } 80 81 } 82
