| /* |
| * Copyright 2006 The Android Open Source Project |
| * |
| * Use of this source code is governed by a BSD-style license that can be |
| * found in the LICENSE file. |
| */ |
| |
| #include "include/core/SkFontArguments.h" |
| #include "include/core/SkFontMgr.h" |
| #include "include/core/SkFontStyle.h" |
| #include "include/core/SkRefCnt.h" |
| #include "include/core/SkStream.h" |
| #include "include/core/SkString.h" |
| #include "include/core/SkTypeface.h" |
| #include "include/core/SkTypes.h" |
| #include "include/private/base/SkTArray.h" |
| #include "include/private/base/SkTemplates.h" |
| #include "src/core/SkFontDescriptor.h" |
| #include "src/ports/SkFontHost_FreeType_common.h" |
| #include "src/ports/SkFontMgr_custom.h" |
| |
| #include <limits> |
| #include <memory> |
| |
| using namespace skia_private; |
| |
| class SkData; |
| |
| SkTypeface_Custom::SkTypeface_Custom(const SkFontStyle& style, bool isFixedPitch, |
| bool sysFont, const SkString familyName, int index) |
| : INHERITED(style, isFixedPitch) |
| , fIsSysFont(sysFont), fFamilyName(familyName), fIndex(index) |
| { } |
| |
| bool SkTypeface_Custom::isSysFont() const { return fIsSysFont; } |
| |
| void SkTypeface_Custom::onGetFamilyName(SkString* familyName) const { |
| *familyName = fFamilyName; |
| } |
| |
| void SkTypeface_Custom::onGetFontDescriptor(SkFontDescriptor* desc, bool* isLocal) const { |
| desc->setFamilyName(fFamilyName.c_str()); |
| desc->setStyle(this->fontStyle()); |
| *isLocal = !this->isSysFont(); |
| } |
| |
| int SkTypeface_Custom::getIndex() const { return fIndex; } |
| |
| |
| SkTypeface_Empty::SkTypeface_Empty() : INHERITED(SkFontStyle(), false, true, SkString(), 0) {} |
| |
| std::unique_ptr<SkStreamAsset> SkTypeface_Empty::onOpenStream(int*) const { return nullptr; } |
| |
| sk_sp<SkTypeface> SkTypeface_Empty::onMakeClone(const SkFontArguments& args) const { |
| return sk_ref_sp(this); |
| } |
| |
| std::unique_ptr<SkFontData> SkTypeface_Empty::onMakeFontData() const { return nullptr; } |
| |
| SkTypeface_Stream::SkTypeface_Stream(std::unique_ptr<SkFontData> fontData, |
| const SkFontStyle& style, bool isFixedPitch, bool sysFont, |
| const SkString familyName) |
| : INHERITED(style, isFixedPitch, sysFont, familyName, fontData->getIndex()) |
| , fData(std::move(fontData)) |
| { } |
| |
| std::unique_ptr<SkStreamAsset> SkTypeface_Stream::onOpenStream(int* ttcIndex) const { |
| *ttcIndex = fData->getIndex(); |
| return fData->getStream()->duplicate(); |
| } |
| |
| std::unique_ptr<SkFontData> SkTypeface_Stream::onMakeFontData() const { |
| return std::make_unique<SkFontData>(*fData); |
| } |
| |
| sk_sp<SkTypeface> SkTypeface_Stream::onMakeClone(const SkFontArguments& args) const { |
| std::unique_ptr<SkFontData> data = this->cloneFontData(args); |
| if (!data) { |
| return nullptr; |
| } |
| |
| SkString familyName; |
| this->getFamilyName(&familyName); |
| |
| return sk_make_sp<SkTypeface_Stream>(std::move(data), |
| this->fontStyle(), |
| this->isFixedPitch(), |
| this->isSysFont(), |
| familyName); |
| } |
| |
| void SkTypeface_Stream::onGetFontDescriptor(SkFontDescriptor* desc, bool* isLocal) const { |
| this->SkTypeface_Custom::onGetFontDescriptor(desc, isLocal); |
| SkTypeface_FreeType::FontDataPaletteToDescriptorPalette(*fData, desc); |
| } |
| |
| SkTypeface_File::SkTypeface_File(const SkFontStyle& style, bool isFixedPitch, bool sysFont, |
| const SkString familyName, const char path[], int index) |
| : INHERITED(style, isFixedPitch, sysFont, familyName, index) |
| , fPath(path) |
| { } |
| |
| std::unique_ptr<SkStreamAsset> SkTypeface_File::onOpenStream(int* ttcIndex) const { |
| *ttcIndex = this->getIndex(); |
| return SkStream::MakeFromFile(fPath.c_str()); |
| } |
| |
| sk_sp<SkTypeface> SkTypeface_File::onMakeClone(const SkFontArguments& args) const { |
| std::unique_ptr<SkFontData> data = this->cloneFontData(args); |
| if (!data) { |
| return nullptr; |
| } |
| |
| SkString familyName; |
| this->getFamilyName(&familyName); |
| |
| return sk_make_sp<SkTypeface_Stream>(std::move(data), |
| this->fontStyle(), |
| this->isFixedPitch(), |
| this->isSysFont(), |
| familyName); |
| } |
| |
| std::unique_ptr<SkFontData> SkTypeface_File::onMakeFontData() const { |
| int index; |
| std::unique_ptr<SkStreamAsset> stream(this->onOpenStream(&index)); |
| if (!stream) { |
| return nullptr; |
| } |
| return std::make_unique<SkFontData>(std::move(stream), index, 0, nullptr, 0, nullptr, 0); |
| } |
| |
| /////////////////////////////////////////////////////////////////////////////// |
| |
| SkFontStyleSet_Custom::SkFontStyleSet_Custom(const SkString familyName) : fFamilyName(familyName) {} |
| |
| void SkFontStyleSet_Custom::appendTypeface(sk_sp<SkTypeface_Custom> typeface) { |
| fStyles.emplace_back(std::move(typeface)); |
| } |
| |
| int SkFontStyleSet_Custom::count() { |
| return fStyles.size(); |
| } |
| |
| void SkFontStyleSet_Custom::getStyle(int index, SkFontStyle* style, SkString* name) { |
| SkASSERT(index < fStyles.size()); |
| if (style) { |
| *style = fStyles[index]->fontStyle(); |
| } |
| if (name) { |
| name->reset(); |
| } |
| } |
| |
| SkTypeface* SkFontStyleSet_Custom::createTypeface(int index) { |
| SkASSERT(index < fStyles.size()); |
| return SkRef(fStyles[index].get()); |
| } |
| |
| SkTypeface* SkFontStyleSet_Custom::matchStyle(const SkFontStyle& pattern) { |
| return this->matchStyleCSS3(pattern); |
| } |
| |
| SkString SkFontStyleSet_Custom::getFamilyName() { return fFamilyName; } |
| |
| |
| SkFontMgr_Custom::SkFontMgr_Custom(const SystemFontLoader& loader) : fDefaultFamily(nullptr) { |
| loader.loadSystemFonts(fScanner, &fFamilies); |
| |
| // Try to pick a default font. |
| static const char* defaultNames[] = { |
| "Arial", "Verdana", "Times New Roman", "Droid Sans", "DejaVu Serif", nullptr |
| }; |
| for (size_t i = 0; i < std::size(defaultNames); ++i) { |
| sk_sp<SkFontStyleSet_Custom> set(this->onMatchFamily(defaultNames[i])); |
| if (nullptr == set) { |
| continue; |
| } |
| |
| sk_sp<SkTypeface> tf(set->matchStyle(SkFontStyle(SkFontStyle::kNormal_Weight, |
| SkFontStyle::kNormal_Width, |
| SkFontStyle::kUpright_Slant))); |
| if (nullptr == tf) { |
| continue; |
| } |
| |
| fDefaultFamily = set.get(); |
| break; |
| } |
| if (nullptr == fDefaultFamily) { |
| fDefaultFamily = fFamilies[0].get(); |
| } |
| } |
| |
| int SkFontMgr_Custom::onCountFamilies() const { |
| return fFamilies.size(); |
| } |
| |
| void SkFontMgr_Custom::onGetFamilyName(int index, SkString* familyName) const { |
| SkASSERT(index < fFamilies.size()); |
| familyName->set(fFamilies[index]->getFamilyName()); |
| } |
| |
| SkFontStyleSet_Custom* SkFontMgr_Custom::onCreateStyleSet(int index) const { |
| SkASSERT(index < fFamilies.size()); |
| return SkRef(fFamilies[index].get()); |
| } |
| |
| SkFontStyleSet_Custom* SkFontMgr_Custom::onMatchFamily(const char familyName[]) const { |
| for (int i = 0; i < fFamilies.size(); ++i) { |
| if (fFamilies[i]->getFamilyName().equals(familyName)) { |
| return SkRef(fFamilies[i].get()); |
| } |
| } |
| return nullptr; |
| } |
| |
| SkTypeface* SkFontMgr_Custom::onMatchFamilyStyle(const char familyName[], |
| const SkFontStyle& fontStyle) const |
| { |
| sk_sp<SkFontStyleSet> sset(this->matchFamily(familyName)); |
| return sset->matchStyle(fontStyle); |
| } |
| |
| SkTypeface* SkFontMgr_Custom::onMatchFamilyStyleCharacter(const char familyName[], |
| const SkFontStyle&, |
| const char* bcp47[], int bcp47Count, |
| SkUnichar character) const |
| { |
| return nullptr; |
| } |
| |
| sk_sp<SkTypeface> SkFontMgr_Custom::onMakeFromData(sk_sp<SkData> data, int ttcIndex) const { |
| return this->makeFromStream(std::make_unique<SkMemoryStream>(std::move(data)), ttcIndex); |
| } |
| |
| sk_sp<SkTypeface> SkFontMgr_Custom::onMakeFromStreamIndex(std::unique_ptr<SkStreamAsset> stream, |
| int ttcIndex) const { |
| return this->makeFromStream(std::move(stream), SkFontArguments().setCollectionIndex(ttcIndex)); |
| } |
| |
| sk_sp<SkTypeface> SkFontMgr_Custom::onMakeFromStreamArgs(std::unique_ptr<SkStreamAsset> stream, |
| const SkFontArguments& args) const { |
| using Scanner = SkTypeface_FreeType::Scanner; |
| bool isFixedPitch; |
| SkFontStyle style; |
| SkString name; |
| Scanner::AxisDefinitions axisDefinitions; |
| if (!fScanner.scanFont(stream.get(), args.getCollectionIndex(), |
| &name, &style, &isFixedPitch, &axisDefinitions)) { |
| return nullptr; |
| } |
| |
| const SkFontArguments::VariationPosition position = args.getVariationDesignPosition(); |
| AutoSTMalloc<4, SkFixed> axisValues(axisDefinitions.size()); |
| Scanner::computeAxisValues(axisDefinitions, position, axisValues, name); |
| |
| auto data = std::make_unique<SkFontData>( |
| std::move(stream), args.getCollectionIndex(), args.getPalette().index, |
| axisValues.get(), axisDefinitions.size(), |
| args.getPalette().overrides, args.getPalette().overrideCount); |
| return sk_sp<SkTypeface>(new SkTypeface_Stream(std::move(data), style, isFixedPitch, false, name)); |
| } |
| |
| sk_sp<SkTypeface> SkFontMgr_Custom::onMakeFromFile(const char path[], int ttcIndex) const { |
| std::unique_ptr<SkStreamAsset> stream = SkStream::MakeFromFile(path); |
| return stream ? this->makeFromStream(std::move(stream), ttcIndex) : nullptr; |
| } |
| |
| sk_sp<SkTypeface> SkFontMgr_Custom::onLegacyMakeTypeface(const char familyName[], |
| SkFontStyle style) const { |
| sk_sp<SkTypeface> tf; |
| |
| if (familyName) { |
| tf.reset(this->onMatchFamilyStyle(familyName, style)); |
| } |
| |
| if (nullptr == tf) { |
| tf.reset(fDefaultFamily->matchStyle(style)); |
| } |
| |
| return tf; |
| } |