1 /* 2 * Copyright 2009 The Android Open Source Project 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 #include "SkFontLCDConfig.h" 9 #include "SkOnce.h" 10 11 static SkFontLCDConfig::LCDOrientation gLCDOrientation = SkFontLCDConfig::kHorizontal_LCDOrientation; 12 static SkFontLCDConfig::LCDOrder gLCDOrder = SkFontLCDConfig::kRGB_LCDOrder; 13 14 SkFontLCDConfig::LCDOrientation SkFontLCDConfig::GetSubpixelOrientation() { 15 return gLCDOrientation; 16 } 17 18 void SkFontLCDConfig::SetSubpixelOrientation(LCDOrientation orientation) { 19 gLCDOrientation = orientation; 20 } 21 22 SkFontLCDConfig::LCDOrder SkFontLCDConfig::GetSubpixelOrder() { 23 return gLCDOrder; 24 } 25 26 void SkFontLCDConfig::SetSubpixelOrder(LCDOrder order) { 27 gLCDOrder = order; 28 } 29 30 /////////////////////////////////////////////////////////////////////////////// 31 // Legacy wrappers : remove from SkFontHost when webkit switches to new API 32 33 #include "SkFontHost.h" 34 35 SkFontHost::LCDOrientation SkFontHost::GetSubpixelOrientation() { 36 return (SkFontHost::LCDOrientation)SkFontLCDConfig::GetSubpixelOrientation(); 37 } 38 39 void SkFontHost::SetSubpixelOrientation(LCDOrientation orientation) { 40 SkFontLCDConfig::SetSubpixelOrientation((SkFontLCDConfig::LCDOrientation)orientation); 41 } 42 43 SkFontHost::LCDOrder SkFontHost::GetSubpixelOrder() { 44 return (SkFontHost::LCDOrder)SkFontLCDConfig::GetSubpixelOrder(); 45 } 46 47 void SkFontHost::SetSubpixelOrder(LCDOrder order) { 48 SkFontLCDConfig::SetSubpixelOrder((SkFontLCDConfig::LCDOrder)order); 49 } 50 51 /////////////////////////////////////////////////////////////////////////////// 52 /////////////////////////////////////////////////////////////////////////////// 53 54 #include "SkFontStyle.h" 55 56 SkFontStyle::SkFontStyle() { 57 fUnion.fU32 = 0; 58 fUnion.fR.fWeight = kNormal_Weight; 59 fUnion.fR.fWidth = kNormal_Width; 60 fUnion.fR.fSlant = kUpright_Slant; 61 } 62 63 SkFontStyle::SkFontStyle(int weight, int width, Slant slant) { 64 fUnion.fU32 = 0; 65 fUnion.fR.fWeight = SkPin32(weight, kThin_Weight, kBlack_Weight); 66 fUnion.fR.fWidth = SkPin32(width, kUltraCondensed_Width, kUltaExpanded_Width); 67 fUnion.fR.fSlant = SkPin32(slant, kUpright_Slant, kItalic_Slant); 68 } 69 70 #include "SkFontMgr.h" 71 72 class SkEmptyFontStyleSet : public SkFontStyleSet { 73 public: 74 virtual int count() SK_OVERRIDE { return 0; } 75 virtual void getStyle(int, SkFontStyle*, SkString*) SK_OVERRIDE { 76 SkDEBUGFAIL("SkFontStyleSet::getStyle called on empty set"); 77 } 78 virtual SkTypeface* createTypeface(int index) SK_OVERRIDE { 79 SkDEBUGFAIL("SkFontStyleSet::createTypeface called on empty set"); 80 return NULL; 81 } 82 virtual SkTypeface* matchStyle(const SkFontStyle&) SK_OVERRIDE { 83 return NULL; 84 } 85 }; 86 87 SkFontStyleSet* SkFontStyleSet::CreateEmpty() { 88 return SkNEW(SkEmptyFontStyleSet); 89 } 90 91 /////////////////////////////////////////////////////////////////////////////// 92 93 class SkEmptyFontMgr : public SkFontMgr { 94 protected: 95 virtual int onCountFamilies() SK_OVERRIDE { 96 return 0; 97 } 98 virtual void onGetFamilyName(int index, SkString* familyName) SK_OVERRIDE { 99 SkDEBUGFAIL("onGetFamilyName called with bad index"); 100 } 101 virtual SkFontStyleSet* onCreateStyleSet(int index) SK_OVERRIDE { 102 SkDEBUGFAIL("onCreateStyleSet called with bad index"); 103 return NULL; 104 } 105 virtual SkFontStyleSet* onMatchFamily(const char[]) SK_OVERRIDE { 106 return SkFontStyleSet::CreateEmpty(); 107 } 108 109 virtual SkTypeface* onMatchFamilyStyle(const char[], 110 const SkFontStyle&) SK_OVERRIDE { 111 return NULL; 112 } 113 virtual SkTypeface* onMatchFaceStyle(const SkTypeface*, 114 const SkFontStyle&) SK_OVERRIDE { 115 return NULL; 116 } 117 virtual SkTypeface* onCreateFromData(SkData*, int) SK_OVERRIDE { 118 return NULL; 119 } 120 virtual SkTypeface* onCreateFromStream(SkStream*, int) SK_OVERRIDE { 121 return NULL; 122 } 123 virtual SkTypeface* onCreateFromFile(const char[], int) SK_OVERRIDE { 124 return NULL; 125 } 126 virtual SkTypeface* onLegacyCreateTypeface(const char [], unsigned) SK_OVERRIDE { 127 return NULL; 128 } 129 }; 130 131 static SkFontStyleSet* emptyOnNull(SkFontStyleSet* fsset) { 132 if (NULL == fsset) { 133 fsset = SkFontStyleSet::CreateEmpty(); 134 } 135 return fsset; 136 } 137 138 int SkFontMgr::countFamilies() { 139 return this->onCountFamilies(); 140 } 141 142 void SkFontMgr::getFamilyName(int index, SkString* familyName) { 143 this->onGetFamilyName(index, familyName); 144 } 145 146 SkFontStyleSet* SkFontMgr::createStyleSet(int index) { 147 return emptyOnNull(this->onCreateStyleSet(index)); 148 } 149 150 SkFontStyleSet* SkFontMgr::matchFamily(const char familyName[]) { 151 return emptyOnNull(this->onMatchFamily(familyName)); 152 } 153 154 SkTypeface* SkFontMgr::matchFamilyStyle(const char familyName[], 155 const SkFontStyle& fs) { 156 return this->onMatchFamilyStyle(familyName, fs); 157 } 158 159 SkTypeface* SkFontMgr::matchFaceStyle(const SkTypeface* face, 160 const SkFontStyle& fs) { 161 return this->onMatchFaceStyle(face, fs); 162 } 163 164 SkTypeface* SkFontMgr::createFromData(SkData* data, int ttcIndex) { 165 if (NULL == data) { 166 return NULL; 167 } 168 return this->onCreateFromData(data, ttcIndex); 169 } 170 171 SkTypeface* SkFontMgr::createFromStream(SkStream* stream, int ttcIndex) { 172 if (NULL == stream) { 173 return NULL; 174 } 175 return this->onCreateFromStream(stream, ttcIndex); 176 } 177 178 SkTypeface* SkFontMgr::createFromFile(const char path[], int ttcIndex) { 179 if (NULL == path) { 180 return NULL; 181 } 182 return this->onCreateFromFile(path, ttcIndex); 183 } 184 185 SkTypeface* SkFontMgr::legacyCreateTypeface(const char familyName[], 186 unsigned styleBits) { 187 return this->onLegacyCreateTypeface(familyName, styleBits); 188 } 189 190 void set_up_default(SkFontMgr** singleton) { 191 *singleton = SkFontMgr::Factory(); 192 // we never want to return NULL 193 if (NULL == *singleton) { 194 *singleton = SkNEW(SkEmptyFontMgr); 195 } 196 } 197 198 SkFontMgr* SkFontMgr::RefDefault() { 199 static SkFontMgr* gFM = NULL; 200 SK_DECLARE_STATIC_ONCE(once); 201 SkOnce(&once, set_up_default, &gFM); 202 return SkRef(gFM); 203 } 204 205 ////////////////////////////////////////////////////////////////////////// 206 207 #ifndef SK_FONTHOST_DOES_NOT_USE_FONTMGR 208 209 #if 0 210 static SkFontStyle TypefaceStyleBitsToFontStyle(SkTypeface::Style styleBits) { 211 SkFontStyle::Weight weight = (styleBits & SkTypeface::kBold) ? 212 SkFontStyle::kBold_Weight : 213 SkFontStyle::kNormal_Weight; 214 SkFontStyle::Width width = SkFontStyle::kNormal_Width; 215 SkFontStyle::Slant slant = (styleBits & SkTypeface::kItalic) ? 216 SkFontStyle::kUpright_Slant : 217 SkFontStyle::kItalic_Slant; 218 return SkFontStyle(weight, width, slant); 219 } 220 #endif 221 222 SkTypeface* SkFontHost::CreateTypeface(const SkTypeface* familyFace, 223 const char familyName[], 224 SkTypeface::Style style) { 225 SkAutoTUnref<SkFontMgr> fm(SkFontMgr::RefDefault()); 226 if (familyFace) { 227 bool bold = style & SkTypeface::kBold; 228 bool italic = style & SkTypeface::kItalic; 229 SkFontStyle newStyle = SkFontStyle(bold ? SkFontStyle::kBold_Weight 230 : SkFontStyle::kNormal_Weight, 231 SkFontStyle::kNormal_Width, 232 italic ? SkFontStyle::kItalic_Slant 233 : SkFontStyle::kUpright_Slant); 234 return fm->matchFaceStyle(familyFace, newStyle); 235 } else { 236 return fm->legacyCreateTypeface(familyName, style); 237 } 238 } 239 240 SkTypeface* SkFontHost::CreateTypefaceFromFile(const char path[]) { 241 SkAutoTUnref<SkFontMgr> fm(SkFontMgr::RefDefault()); 242 return fm->createFromFile(path); 243 } 244 245 SkTypeface* SkFontHost::CreateTypefaceFromStream(SkStream* stream) { 246 SkAutoTUnref<SkFontMgr> fm(SkFontMgr::RefDefault()); 247 return fm->createFromStream(stream); 248 } 249 250 #endif 251
