1e1a828c555223e75ebf83d0674daa2e6fd5889a3bungeman/* 2e1a828c555223e75ebf83d0674daa2e6fd5889a3bungeman * Copyright 2015 Google Inc. 3e1a828c555223e75ebf83d0674daa2e6fd5889a3bungeman * 4e1a828c555223e75ebf83d0674daa2e6fd5889a3bungeman * Use of this source code is governed by a BSD-style license that can be 5e1a828c555223e75ebf83d0674daa2e6fd5889a3bungeman * found in the LICENSE file. 6e1a828c555223e75ebf83d0674daa2e6fd5889a3bungeman */ 7e1a828c555223e75ebf83d0674daa2e6fd5889a3bungeman 841868fe5625fc3bd70daa3f461c881b5db6a9265bungeman#include "SkFontDescriptor.h" 9e1a828c555223e75ebf83d0674daa2e6fd5889a3bungeman#include "SkFontMgr.h" 10ffa4a9213b4e754adc210fa02a3c4b1ae8d3b6d0mtklein#include "SkOnce.h" 11a1193e4b0e34a7e4e1bd33e9708d7341679f8321scroggo#include "SkStream.h" 12e1a828c555223e75ebf83d0674daa2e6fd5889a3bungeman#include "SkTypes.h" 13e1a828c555223e75ebf83d0674daa2e6fd5889a3bungeman 14e1a828c555223e75ebf83d0674daa2e6fd5889a3bungemanclass SkFontStyle; 15e1a828c555223e75ebf83d0674daa2e6fd5889a3bungemanclass SkTypeface; 16e1a828c555223e75ebf83d0674daa2e6fd5889a3bungeman 17e1a828c555223e75ebf83d0674daa2e6fd5889a3bungemanclass SkEmptyFontStyleSet : public SkFontStyleSet { 18e1a828c555223e75ebf83d0674daa2e6fd5889a3bungemanpublic: 1936352bf5e38f45a70ee4f4fc132a38048d38206dmtklein int count() override { return 0; } 2036352bf5e38f45a70ee4f4fc132a38048d38206dmtklein void getStyle(int, SkFontStyle*, SkString*) override { 21e1a828c555223e75ebf83d0674daa2e6fd5889a3bungeman SkDEBUGFAIL("SkFontStyleSet::getStyle called on empty set"); 22e1a828c555223e75ebf83d0674daa2e6fd5889a3bungeman } 2336352bf5e38f45a70ee4f4fc132a38048d38206dmtklein SkTypeface* createTypeface(int index) override { 24e1a828c555223e75ebf83d0674daa2e6fd5889a3bungeman SkDEBUGFAIL("SkFontStyleSet::createTypeface called on empty set"); 2596fcdcc219d2a0d3579719b84b28bede76efba64halcanary return nullptr; 26e1a828c555223e75ebf83d0674daa2e6fd5889a3bungeman } 2736352bf5e38f45a70ee4f4fc132a38048d38206dmtklein SkTypeface* matchStyle(const SkFontStyle&) override { 2896fcdcc219d2a0d3579719b84b28bede76efba64halcanary return nullptr; 29e1a828c555223e75ebf83d0674daa2e6fd5889a3bungeman } 30e1a828c555223e75ebf83d0674daa2e6fd5889a3bungeman}; 31e1a828c555223e75ebf83d0674daa2e6fd5889a3bungeman 32385fe4d4b62d7d1dd76116dd570df3290a2f487bhalcanarySkFontStyleSet* SkFontStyleSet::CreateEmpty() { return new SkEmptyFontStyleSet; } 33e1a828c555223e75ebf83d0674daa2e6fd5889a3bungeman 34e1a828c555223e75ebf83d0674daa2e6fd5889a3bungeman/////////////////////////////////////////////////////////////////////////////// 35e1a828c555223e75ebf83d0674daa2e6fd5889a3bungeman 36e1a828c555223e75ebf83d0674daa2e6fd5889a3bungemanclass SkEmptyFontMgr : public SkFontMgr { 37e1a828c555223e75ebf83d0674daa2e6fd5889a3bungemanprotected: 3836352bf5e38f45a70ee4f4fc132a38048d38206dmtklein int onCountFamilies() const override { 39e1a828c555223e75ebf83d0674daa2e6fd5889a3bungeman return 0; 40e1a828c555223e75ebf83d0674daa2e6fd5889a3bungeman } 4136352bf5e38f45a70ee4f4fc132a38048d38206dmtklein void onGetFamilyName(int index, SkString* familyName) const override { 42e1a828c555223e75ebf83d0674daa2e6fd5889a3bungeman SkDEBUGFAIL("onGetFamilyName called with bad index"); 43e1a828c555223e75ebf83d0674daa2e6fd5889a3bungeman } 4436352bf5e38f45a70ee4f4fc132a38048d38206dmtklein SkFontStyleSet* onCreateStyleSet(int index) const override { 45e1a828c555223e75ebf83d0674daa2e6fd5889a3bungeman SkDEBUGFAIL("onCreateStyleSet called with bad index"); 4696fcdcc219d2a0d3579719b84b28bede76efba64halcanary return nullptr; 47e1a828c555223e75ebf83d0674daa2e6fd5889a3bungeman } 4836352bf5e38f45a70ee4f4fc132a38048d38206dmtklein SkFontStyleSet* onMatchFamily(const char[]) const override { 49e1a828c555223e75ebf83d0674daa2e6fd5889a3bungeman return SkFontStyleSet::CreateEmpty(); 50e1a828c555223e75ebf83d0674daa2e6fd5889a3bungeman } 51e1a828c555223e75ebf83d0674daa2e6fd5889a3bungeman 52592273965a7fc7fc403252e420d15f6555b8f25dMike Reed SkTypeface* onMatchFamilyStyle(const char[], const SkFontStyle&) const override { 5396fcdcc219d2a0d3579719b84b28bede76efba64halcanary return nullptr; 54e1a828c555223e75ebf83d0674daa2e6fd5889a3bungeman } 55592273965a7fc7fc403252e420d15f6555b8f25dMike Reed SkTypeface* onMatchFamilyStyleCharacter(const char familyName[], 56592273965a7fc7fc403252e420d15f6555b8f25dMike Reed const SkFontStyle& style, 57592273965a7fc7fc403252e420d15f6555b8f25dMike Reed const char* bcp47[], 58592273965a7fc7fc403252e420d15f6555b8f25dMike Reed int bcp47Count, 59592273965a7fc7fc403252e420d15f6555b8f25dMike Reed SkUnichar character) const override { 6096fcdcc219d2a0d3579719b84b28bede76efba64halcanary return nullptr; 61e1a828c555223e75ebf83d0674daa2e6fd5889a3bungeman } 62592273965a7fc7fc403252e420d15f6555b8f25dMike Reed SkTypeface* onMatchFaceStyle(const SkTypeface*, const SkFontStyle&) const override { 6396fcdcc219d2a0d3579719b84b28bede76efba64halcanary return nullptr; 64e1a828c555223e75ebf83d0674daa2e6fd5889a3bungeman } 65592273965a7fc7fc403252e420d15f6555b8f25dMike Reed 66592273965a7fc7fc403252e420d15f6555b8f25dMike Reed sk_sp<SkTypeface> onMakeFromData(sk_sp<SkData>, int) const override { 67592273965a7fc7fc403252e420d15f6555b8f25dMike Reed return nullptr; 68592273965a7fc7fc403252e420d15f6555b8f25dMike Reed } 69592273965a7fc7fc403252e420d15f6555b8f25dMike Reed sk_sp<SkTypeface> onMakeFromStreamIndex(std::unique_ptr<SkStreamAsset>, int) const override { 70592273965a7fc7fc403252e420d15f6555b8f25dMike Reed return nullptr; 71592273965a7fc7fc403252e420d15f6555b8f25dMike Reed } 72592273965a7fc7fc403252e420d15f6555b8f25dMike Reed sk_sp<SkTypeface> onMakeFromStreamArgs(std::unique_ptr<SkStreamAsset>, 73592273965a7fc7fc403252e420d15f6555b8f25dMike Reed const SkFontArguments&) const override { 7496fcdcc219d2a0d3579719b84b28bede76efba64halcanary return nullptr; 75e1a828c555223e75ebf83d0674daa2e6fd5889a3bungeman } 76592273965a7fc7fc403252e420d15f6555b8f25dMike Reed sk_sp<SkTypeface> onMakeFromFontData(std::unique_ptr<SkFontData>) const override { 7796fcdcc219d2a0d3579719b84b28bede76efba64halcanary return nullptr; 78e1a828c555223e75ebf83d0674daa2e6fd5889a3bungeman } 79592273965a7fc7fc403252e420d15f6555b8f25dMike Reed sk_sp<SkTypeface> onMakeFromFile(const char[], int) const override { 8096fcdcc219d2a0d3579719b84b28bede76efba64halcanary return nullptr; 81e1a828c555223e75ebf83d0674daa2e6fd5889a3bungeman } 82592273965a7fc7fc403252e420d15f6555b8f25dMike Reed sk_sp<SkTypeface> onLegacyMakeTypeface(const char [], SkFontStyle) const override { 8396fcdcc219d2a0d3579719b84b28bede76efba64halcanary return nullptr; 84e1a828c555223e75ebf83d0674daa2e6fd5889a3bungeman } 85e1a828c555223e75ebf83d0674daa2e6fd5889a3bungeman}; 86e1a828c555223e75ebf83d0674daa2e6fd5889a3bungeman 87e1a828c555223e75ebf83d0674daa2e6fd5889a3bungemanstatic SkFontStyleSet* emptyOnNull(SkFontStyleSet* fsset) { 8896fcdcc219d2a0d3579719b84b28bede76efba64halcanary if (nullptr == fsset) { 89e1a828c555223e75ebf83d0674daa2e6fd5889a3bungeman fsset = SkFontStyleSet::CreateEmpty(); 90e1a828c555223e75ebf83d0674daa2e6fd5889a3bungeman } 91e1a828c555223e75ebf83d0674daa2e6fd5889a3bungeman return fsset; 92e1a828c555223e75ebf83d0674daa2e6fd5889a3bungeman} 93e1a828c555223e75ebf83d0674daa2e6fd5889a3bungeman 94e1a828c555223e75ebf83d0674daa2e6fd5889a3bungemanint SkFontMgr::countFamilies() const { 95e1a828c555223e75ebf83d0674daa2e6fd5889a3bungeman return this->onCountFamilies(); 96e1a828c555223e75ebf83d0674daa2e6fd5889a3bungeman} 97e1a828c555223e75ebf83d0674daa2e6fd5889a3bungeman 98e1a828c555223e75ebf83d0674daa2e6fd5889a3bungemanvoid SkFontMgr::getFamilyName(int index, SkString* familyName) const { 99e1a828c555223e75ebf83d0674daa2e6fd5889a3bungeman this->onGetFamilyName(index, familyName); 100e1a828c555223e75ebf83d0674daa2e6fd5889a3bungeman} 101e1a828c555223e75ebf83d0674daa2e6fd5889a3bungeman 102e1a828c555223e75ebf83d0674daa2e6fd5889a3bungemanSkFontStyleSet* SkFontMgr::createStyleSet(int index) const { 103e1a828c555223e75ebf83d0674daa2e6fd5889a3bungeman return emptyOnNull(this->onCreateStyleSet(index)); 104e1a828c555223e75ebf83d0674daa2e6fd5889a3bungeman} 105e1a828c555223e75ebf83d0674daa2e6fd5889a3bungeman 106e1a828c555223e75ebf83d0674daa2e6fd5889a3bungemanSkFontStyleSet* SkFontMgr::matchFamily(const char familyName[]) const { 107e1a828c555223e75ebf83d0674daa2e6fd5889a3bungeman return emptyOnNull(this->onMatchFamily(familyName)); 108e1a828c555223e75ebf83d0674daa2e6fd5889a3bungeman} 109e1a828c555223e75ebf83d0674daa2e6fd5889a3bungeman 110e1a828c555223e75ebf83d0674daa2e6fd5889a3bungemanSkTypeface* SkFontMgr::matchFamilyStyle(const char familyName[], 111e1a828c555223e75ebf83d0674daa2e6fd5889a3bungeman const SkFontStyle& fs) const { 112e1a828c555223e75ebf83d0674daa2e6fd5889a3bungeman return this->onMatchFamilyStyle(familyName, fs); 113e1a828c555223e75ebf83d0674daa2e6fd5889a3bungeman} 114e1a828c555223e75ebf83d0674daa2e6fd5889a3bungeman 115e1a828c555223e75ebf83d0674daa2e6fd5889a3bungemanSkTypeface* SkFontMgr::matchFamilyStyleCharacter(const char familyName[], const SkFontStyle& style, 116e1a828c555223e75ebf83d0674daa2e6fd5889a3bungeman const char* bcp47[], int bcp47Count, 117e1a828c555223e75ebf83d0674daa2e6fd5889a3bungeman SkUnichar character) const { 118e1a828c555223e75ebf83d0674daa2e6fd5889a3bungeman return this->onMatchFamilyStyleCharacter(familyName, style, bcp47, bcp47Count, character); 119e1a828c555223e75ebf83d0674daa2e6fd5889a3bungeman} 120e1a828c555223e75ebf83d0674daa2e6fd5889a3bungeman 121e1a828c555223e75ebf83d0674daa2e6fd5889a3bungemanSkTypeface* SkFontMgr::matchFaceStyle(const SkTypeface* face, 122e1a828c555223e75ebf83d0674daa2e6fd5889a3bungeman const SkFontStyle& fs) const { 123e1a828c555223e75ebf83d0674daa2e6fd5889a3bungeman return this->onMatchFaceStyle(face, fs); 124e1a828c555223e75ebf83d0674daa2e6fd5889a3bungeman} 125e1a828c555223e75ebf83d0674daa2e6fd5889a3bungeman 126592273965a7fc7fc403252e420d15f6555b8f25dMike Reedsk_sp<SkTypeface> SkFontMgr::makeFromData(sk_sp<SkData> data, int ttcIndex) const { 12796fcdcc219d2a0d3579719b84b28bede76efba64halcanary if (nullptr == data) { 12896fcdcc219d2a0d3579719b84b28bede76efba64halcanary return nullptr; 129e1a828c555223e75ebf83d0674daa2e6fd5889a3bungeman } 130592273965a7fc7fc403252e420d15f6555b8f25dMike Reed return this->onMakeFromData(std::move(data), ttcIndex); 131e1a828c555223e75ebf83d0674daa2e6fd5889a3bungeman} 132e1a828c555223e75ebf83d0674daa2e6fd5889a3bungeman 133592273965a7fc7fc403252e420d15f6555b8f25dMike Reedsk_sp<SkTypeface> SkFontMgr::makeFromStream(std::unique_ptr<SkStreamAsset> stream, 134592273965a7fc7fc403252e420d15f6555b8f25dMike Reed int ttcIndex) const { 13596fcdcc219d2a0d3579719b84b28bede76efba64halcanary if (nullptr == stream) { 13696fcdcc219d2a0d3579719b84b28bede76efba64halcanary return nullptr; 137e1a828c555223e75ebf83d0674daa2e6fd5889a3bungeman } 138592273965a7fc7fc403252e420d15f6555b8f25dMike Reed return this->onMakeFromStreamIndex(std::move(stream), ttcIndex); 139e1a828c555223e75ebf83d0674daa2e6fd5889a3bungeman} 140e1a828c555223e75ebf83d0674daa2e6fd5889a3bungeman 141592273965a7fc7fc403252e420d15f6555b8f25dMike Reedsk_sp<SkTypeface> SkFontMgr::makeFromStream(std::unique_ptr<SkStreamAsset> stream, 142592273965a7fc7fc403252e420d15f6555b8f25dMike Reed const SkFontArguments& args) const { 143f6c7107d0385cc2b556802354b93b7dcff61570dbungeman if (nullptr == stream) { 144f6c7107d0385cc2b556802354b93b7dcff61570dbungeman return nullptr; 145f6c7107d0385cc2b556802354b93b7dcff61570dbungeman } 146592273965a7fc7fc403252e420d15f6555b8f25dMike Reed return this->onMakeFromStreamArgs(std::move(stream), args); 147f6c7107d0385cc2b556802354b93b7dcff61570dbungeman} 148f6c7107d0385cc2b556802354b93b7dcff61570dbungeman 149592273965a7fc7fc403252e420d15f6555b8f25dMike Reedsk_sp<SkTypeface> SkFontMgr::makeFromFontData(std::unique_ptr<SkFontData> data) const { 15096fcdcc219d2a0d3579719b84b28bede76efba64halcanary if (nullptr == data) { 15196fcdcc219d2a0d3579719b84b28bede76efba64halcanary return nullptr; 15241868fe5625fc3bd70daa3f461c881b5db6a9265bungeman } 153592273965a7fc7fc403252e420d15f6555b8f25dMike Reed return this->onMakeFromFontData(std::move(data)); 15441868fe5625fc3bd70daa3f461c881b5db6a9265bungeman} 15541868fe5625fc3bd70daa3f461c881b5db6a9265bungeman 156592273965a7fc7fc403252e420d15f6555b8f25dMike Reedsk_sp<SkTypeface> SkFontMgr::makeFromFile(const char path[], int ttcIndex) const { 157592273965a7fc7fc403252e420d15f6555b8f25dMike Reed if (nullptr == path) { 158592273965a7fc7fc403252e420d15f6555b8f25dMike Reed return nullptr; 159592273965a7fc7fc403252e420d15f6555b8f25dMike Reed } 160592273965a7fc7fc403252e420d15f6555b8f25dMike Reed return this->onMakeFromFile(path, ttcIndex); 161f6c7107d0385cc2b556802354b93b7dcff61570dbungeman} 162f6c7107d0385cc2b556802354b93b7dcff61570dbungeman 163592273965a7fc7fc403252e420d15f6555b8f25dMike Reedsk_sp<SkTypeface> SkFontMgr::legacyMakeTypeface(const char familyName[], SkFontStyle style) const { 164592273965a7fc7fc403252e420d15f6555b8f25dMike Reed return this->onLegacyMakeTypeface(familyName, style); 16541868fe5625fc3bd70daa3f461c881b5db6a9265bungeman} 16641868fe5625fc3bd70daa3f461c881b5db6a9265bungeman 167592273965a7fc7fc403252e420d15f6555b8f25dMike Reedsk_sp<SkTypeface> SkFontMgr::onMakeFromStreamArgs(std::unique_ptr<SkStreamAsset> stream, 168592273965a7fc7fc403252e420d15f6555b8f25dMike Reed const SkFontArguments& args) const { 169592273965a7fc7fc403252e420d15f6555b8f25dMike Reed return this->makeFromStream(std::move(stream), args.getCollectionIndex()); 170592273965a7fc7fc403252e420d15f6555b8f25dMike Reed} 171592273965a7fc7fc403252e420d15f6555b8f25dMike Reedsk_sp<SkTypeface> SkFontMgr::onMakeFromFontData(std::unique_ptr<SkFontData> data) const { 172592273965a7fc7fc403252e420d15f6555b8f25dMike Reed return this->makeFromStream(data->detachStream(), data->getIndex()); 173e1a828c555223e75ebf83d0674daa2e6fd5889a3bungeman} 174e1a828c555223e75ebf83d0674daa2e6fd5889a3bungeman 1753186821c7e4448c4b586dde590760e22b46cf166Mike Klein// A global function pointer that's not declared, but can be overriden at startup by test tools. 1763186821c7e4448c4b586dde590760e22b46cf166Mike Kleinsk_sp<SkFontMgr> (*gSkFontMgr_DefaultFactory)() = nullptr; 1773186821c7e4448c4b586dde590760e22b46cf166Mike Klein 1783546ff10c2e1e91f5afe1efaab4e5e14f71689d1Ben Wagnersk_sp<SkFontMgr> SkFontMgr::RefDefault() { 1793546ff10c2e1e91f5afe1efaab4e5e14f71689d1Ben Wagner static SkOnce once; 1803546ff10c2e1e91f5afe1efaab4e5e14f71689d1Ben Wagner static sk_sp<SkFontMgr> singleton; 1813546ff10c2e1e91f5afe1efaab4e5e14f71689d1Ben Wagner 1823546ff10c2e1e91f5afe1efaab4e5e14f71689d1Ben Wagner once([]{ 1833186821c7e4448c4b586dde590760e22b46cf166Mike Klein sk_sp<SkFontMgr> fm = gSkFontMgr_DefaultFactory ? gSkFontMgr_DefaultFactory() 1843186821c7e4448c4b586dde590760e22b46cf166Mike Klein : SkFontMgr::Factory(); 1853546ff10c2e1e91f5afe1efaab4e5e14f71689d1Ben Wagner singleton = fm ? std::move(fm) : sk_make_sp<SkEmptyFontMgr>(); 1863546ff10c2e1e91f5afe1efaab4e5e14f71689d1Ben Wagner }); 1873546ff10c2e1e91f5afe1efaab4e5e14f71689d1Ben Wagner return singleton; 1883546ff10c2e1e91f5afe1efaab4e5e14f71689d1Ben Wagner} 189147ea2fb7ad9adeeb52fe5549f7ba20953296f6fbungeman 190147ea2fb7ad9adeeb52fe5549f7ba20953296f6fbungeman/** 191147ea2fb7ad9adeeb52fe5549f7ba20953296f6fbungeman* Width has the greatest priority. 192147ea2fb7ad9adeeb52fe5549f7ba20953296f6fbungeman* If the value of pattern.width is 5 (normal) or less, 193147ea2fb7ad9adeeb52fe5549f7ba20953296f6fbungeman* narrower width values are checked first, then wider values. 194147ea2fb7ad9adeeb52fe5549f7ba20953296f6fbungeman* If the value of pattern.width is greater than 5 (normal), 195147ea2fb7ad9adeeb52fe5549f7ba20953296f6fbungeman* wider values are checked first, followed by narrower values. 196147ea2fb7ad9adeeb52fe5549f7ba20953296f6fbungeman* 197147ea2fb7ad9adeeb52fe5549f7ba20953296f6fbungeman* Italic/Oblique has the next highest priority. 198147ea2fb7ad9adeeb52fe5549f7ba20953296f6fbungeman* If italic requested and there is some italic font, use it. 199147ea2fb7ad9adeeb52fe5549f7ba20953296f6fbungeman* If oblique requested and there is some oblique font, use it. 200147ea2fb7ad9adeeb52fe5549f7ba20953296f6fbungeman* If italic requested and there is some oblique font, use it. 201147ea2fb7ad9adeeb52fe5549f7ba20953296f6fbungeman* If oblique requested and there is some italic font, use it. 202147ea2fb7ad9adeeb52fe5549f7ba20953296f6fbungeman* 203147ea2fb7ad9adeeb52fe5549f7ba20953296f6fbungeman* Exact match. 204147ea2fb7ad9adeeb52fe5549f7ba20953296f6fbungeman* If pattern.weight < 400, weights below pattern.weight are checked 205147ea2fb7ad9adeeb52fe5549f7ba20953296f6fbungeman* in descending order followed by weights above pattern.weight 206147ea2fb7ad9adeeb52fe5549f7ba20953296f6fbungeman* in ascending order until a match is found. 207147ea2fb7ad9adeeb52fe5549f7ba20953296f6fbungeman* If pattern.weight > 500, weights above pattern.weight are checked 208147ea2fb7ad9adeeb52fe5549f7ba20953296f6fbungeman* in ascending order followed by weights below pattern.weight 209147ea2fb7ad9adeeb52fe5549f7ba20953296f6fbungeman* in descending order until a match is found. 210147ea2fb7ad9adeeb52fe5549f7ba20953296f6fbungeman* If pattern.weight is 400, 500 is checked first 211147ea2fb7ad9adeeb52fe5549f7ba20953296f6fbungeman* and then the rule for pattern.weight < 400 is used. 212147ea2fb7ad9adeeb52fe5549f7ba20953296f6fbungeman* If pattern.weight is 500, 400 is checked first 213147ea2fb7ad9adeeb52fe5549f7ba20953296f6fbungeman* and then the rule for pattern.weight < 400 is used. 214147ea2fb7ad9adeeb52fe5549f7ba20953296f6fbungeman*/ 215147ea2fb7ad9adeeb52fe5549f7ba20953296f6fbungemanSkTypeface* SkFontStyleSet::matchStyleCSS3(const SkFontStyle& pattern) { 216147ea2fb7ad9adeeb52fe5549f7ba20953296f6fbungeman int count = this->count(); 217147ea2fb7ad9adeeb52fe5549f7ba20953296f6fbungeman if (0 == count) { 218147ea2fb7ad9adeeb52fe5549f7ba20953296f6fbungeman return nullptr; 219147ea2fb7ad9adeeb52fe5549f7ba20953296f6fbungeman } 220147ea2fb7ad9adeeb52fe5549f7ba20953296f6fbungeman 221147ea2fb7ad9adeeb52fe5549f7ba20953296f6fbungeman struct Score { 222147ea2fb7ad9adeeb52fe5549f7ba20953296f6fbungeman int score; 223147ea2fb7ad9adeeb52fe5549f7ba20953296f6fbungeman int index; 224b4bb7d825566042ed64697be49457dbac060e6c4bungeman Score& operator +=(int rhs) { this->score += rhs; return *this; } 225b4bb7d825566042ed64697be49457dbac060e6c4bungeman Score& operator <<=(int rhs) { this->score <<= rhs; return *this; } 226b4bb7d825566042ed64697be49457dbac060e6c4bungeman bool operator <(const Score& that) { return this->score < that.score; } 227147ea2fb7ad9adeeb52fe5549f7ba20953296f6fbungeman }; 228147ea2fb7ad9adeeb52fe5549f7ba20953296f6fbungeman 229147ea2fb7ad9adeeb52fe5549f7ba20953296f6fbungeman Score maxScore = { 0, 0 }; 230147ea2fb7ad9adeeb52fe5549f7ba20953296f6fbungeman for (int i = 0; i < count; ++i) { 231147ea2fb7ad9adeeb52fe5549f7ba20953296f6fbungeman SkFontStyle current; 232147ea2fb7ad9adeeb52fe5549f7ba20953296f6fbungeman this->getStyle(i, ¤t, nullptr); 233147ea2fb7ad9adeeb52fe5549f7ba20953296f6fbungeman Score currentScore = { 0, i }; 234147ea2fb7ad9adeeb52fe5549f7ba20953296f6fbungeman 235b4bb7d825566042ed64697be49457dbac060e6c4bungeman // CSS stretch / SkFontStyle::Width 236b4bb7d825566042ed64697be49457dbac060e6c4bungeman // Takes priority over everything else. 237147ea2fb7ad9adeeb52fe5549f7ba20953296f6fbungeman if (pattern.width() <= SkFontStyle::kNormal_Width) { 238147ea2fb7ad9adeeb52fe5549f7ba20953296f6fbungeman if (current.width() <= pattern.width()) { 239b4bb7d825566042ed64697be49457dbac060e6c4bungeman currentScore += 10 - pattern.width() + current.width(); 240147ea2fb7ad9adeeb52fe5549f7ba20953296f6fbungeman } else { 241b4bb7d825566042ed64697be49457dbac060e6c4bungeman currentScore += 10 - current.width(); 242147ea2fb7ad9adeeb52fe5549f7ba20953296f6fbungeman } 243147ea2fb7ad9adeeb52fe5549f7ba20953296f6fbungeman } else { 244147ea2fb7ad9adeeb52fe5549f7ba20953296f6fbungeman if (current.width() > pattern.width()) { 245b4bb7d825566042ed64697be49457dbac060e6c4bungeman currentScore += 10 + pattern.width() - current.width(); 246147ea2fb7ad9adeeb52fe5549f7ba20953296f6fbungeman } else { 247b4bb7d825566042ed64697be49457dbac060e6c4bungeman currentScore += current.width(); 248147ea2fb7ad9adeeb52fe5549f7ba20953296f6fbungeman } 249147ea2fb7ad9adeeb52fe5549f7ba20953296f6fbungeman } 250b4bb7d825566042ed64697be49457dbac060e6c4bungeman currentScore <<= 8; 251b4bb7d825566042ed64697be49457dbac060e6c4bungeman 252b4bb7d825566042ed64697be49457dbac060e6c4bungeman // CSS style (normal, italic, oblique) / SkFontStyle::Slant (upright, italic, oblique) 253b4bb7d825566042ed64697be49457dbac060e6c4bungeman // Takes priority over all valid weights. 254b4bb7d825566042ed64697be49457dbac060e6c4bungeman static_assert(SkFontStyle::kUpright_Slant == 0 && 255b4bb7d825566042ed64697be49457dbac060e6c4bungeman SkFontStyle::kItalic_Slant == 1 && 256b4bb7d825566042ed64697be49457dbac060e6c4bungeman SkFontStyle::kOblique_Slant == 2, 257b4bb7d825566042ed64697be49457dbac060e6c4bungeman "SkFontStyle::Slant values not as required."); 258b4bb7d825566042ed64697be49457dbac060e6c4bungeman SkASSERT(0 <= pattern.slant() && pattern.slant() <= 2 && 259b4bb7d825566042ed64697be49457dbac060e6c4bungeman 0 <= current.slant() && current.slant() <= 2); 260b4bb7d825566042ed64697be49457dbac060e6c4bungeman static const int score[3][3] = { 261b4bb7d825566042ed64697be49457dbac060e6c4bungeman /* Upright Italic Oblique [current]*/ 262b4bb7d825566042ed64697be49457dbac060e6c4bungeman /* Upright */ { 3 , 1 , 2 }, 263b4bb7d825566042ed64697be49457dbac060e6c4bungeman /* Italic */ { 1 , 3 , 2 }, 264b4bb7d825566042ed64697be49457dbac060e6c4bungeman /* Oblique */ { 1 , 2 , 3 }, 265b4bb7d825566042ed64697be49457dbac060e6c4bungeman /* [pattern] */ 266b4bb7d825566042ed64697be49457dbac060e6c4bungeman }; 267b4bb7d825566042ed64697be49457dbac060e6c4bungeman currentScore += score[pattern.slant()][current.slant()]; 268b4bb7d825566042ed64697be49457dbac060e6c4bungeman currentScore <<= 8; 269b4bb7d825566042ed64697be49457dbac060e6c4bungeman 270b4bb7d825566042ed64697be49457dbac060e6c4bungeman // Synthetics (weight, style) [no stretch synthetic?] 271b4bb7d825566042ed64697be49457dbac060e6c4bungeman 272b4bb7d825566042ed64697be49457dbac060e6c4bungeman // CSS weight / SkFontStyle::Weight 273147ea2fb7ad9adeeb52fe5549f7ba20953296f6fbungeman // The 'closer' to the target weight, the higher the score. 274147ea2fb7ad9adeeb52fe5549f7ba20953296f6fbungeman // 1000 is the 'heaviest' recognized weight 275147ea2fb7ad9adeeb52fe5549f7ba20953296f6fbungeman if (pattern.weight() == current.weight()) { 276b4bb7d825566042ed64697be49457dbac060e6c4bungeman currentScore += 1000; 277147ea2fb7ad9adeeb52fe5549f7ba20953296f6fbungeman } else if (pattern.weight() <= 500) { 278147ea2fb7ad9adeeb52fe5549f7ba20953296f6fbungeman if (400 <= pattern.weight() && pattern.weight() < 450) { 279147ea2fb7ad9adeeb52fe5549f7ba20953296f6fbungeman if (450 <= current.weight() && current.weight() <= 500) { 280147ea2fb7ad9adeeb52fe5549f7ba20953296f6fbungeman // Artificially boost the 500 weight. 281147ea2fb7ad9adeeb52fe5549f7ba20953296f6fbungeman // TODO: determine correct number to use. 282b4bb7d825566042ed64697be49457dbac060e6c4bungeman currentScore += 500; 283147ea2fb7ad9adeeb52fe5549f7ba20953296f6fbungeman } 284147ea2fb7ad9adeeb52fe5549f7ba20953296f6fbungeman } 285147ea2fb7ad9adeeb52fe5549f7ba20953296f6fbungeman if (current.weight() <= pattern.weight()) { 286b4bb7d825566042ed64697be49457dbac060e6c4bungeman currentScore += 1000 - pattern.weight() + current.weight(); 287147ea2fb7ad9adeeb52fe5549f7ba20953296f6fbungeman } else { 288b4bb7d825566042ed64697be49457dbac060e6c4bungeman currentScore += 1000 - current.weight(); 289147ea2fb7ad9adeeb52fe5549f7ba20953296f6fbungeman } 290147ea2fb7ad9adeeb52fe5549f7ba20953296f6fbungeman } else if (pattern.weight() > 500) { 291147ea2fb7ad9adeeb52fe5549f7ba20953296f6fbungeman if (current.weight() > pattern.weight()) { 292b4bb7d825566042ed64697be49457dbac060e6c4bungeman currentScore += 1000 + pattern.weight() - current.weight(); 293147ea2fb7ad9adeeb52fe5549f7ba20953296f6fbungeman } else { 294b4bb7d825566042ed64697be49457dbac060e6c4bungeman currentScore += current.weight(); 295147ea2fb7ad9adeeb52fe5549f7ba20953296f6fbungeman } 296147ea2fb7ad9adeeb52fe5549f7ba20953296f6fbungeman } 297147ea2fb7ad9adeeb52fe5549f7ba20953296f6fbungeman 298b4bb7d825566042ed64697be49457dbac060e6c4bungeman if (maxScore < currentScore) { 299147ea2fb7ad9adeeb52fe5549f7ba20953296f6fbungeman maxScore = currentScore; 300147ea2fb7ad9adeeb52fe5549f7ba20953296f6fbungeman } 301147ea2fb7ad9adeeb52fe5549f7ba20953296f6fbungeman } 302147ea2fb7ad9adeeb52fe5549f7ba20953296f6fbungeman 303147ea2fb7ad9adeeb52fe5549f7ba20953296f6fbungeman return this->createTypeface(maxScore.index); 304147ea2fb7ad9adeeb52fe5549f7ba20953296f6fbungeman} 305