| /* |
| * Copyright 2018 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. |
| */ |
| |
| #ifndef SkTestEmptyTypeface_DEFINED |
| #define SkTestEmptyTypeface_DEFINED |
| |
| #include "SkTypeface.h" |
| |
| class SkTestEmptyTypeface : public SkTypeface { |
| public: |
| static sk_sp<SkTypeface> Make() { return sk_sp<SkTypeface>(new SkTestEmptyTypeface); } |
| protected: |
| SkTestEmptyTypeface() : SkTypeface(SkFontStyle(), true) { } |
| |
| SkStreamAsset* onOpenStream(int* ttcIndex) const override { return nullptr; } |
| sk_sp<SkTypeface> onMakeClone(const SkFontArguments& args) const override { |
| return sk_ref_sp(this); |
| } |
| SkScalerContext* onCreateScalerContext(const SkScalerContextEffects&, |
| const SkDescriptor*) const override { |
| return nullptr; |
| } |
| void onFilterRec(SkScalerContextRec*) const override { } |
| std::unique_ptr<SkAdvancedTypefaceMetrics> onGetAdvancedMetrics() const override { |
| return nullptr; |
| } |
| void onGetFontDescriptor(SkFontDescriptor*, bool*) const override { } |
| virtual int onCharsToGlyphs(const void* chars, Encoding encoding, |
| uint16_t glyphs[], int glyphCount) const override { |
| if (glyphs && glyphCount > 0) { |
| sk_bzero(glyphs, glyphCount * sizeof(glyphs[0])); |
| } |
| return 0; |
| } |
| int onCountGlyphs() const override { return 0; } |
| int onGetUPEM() const override { return 0; } |
| class EmptyLocalizedStrings : public SkTypeface::LocalizedStrings { |
| public: |
| bool next(SkTypeface::LocalizedString*) override { return false; } |
| }; |
| void onGetFamilyName(SkString* familyName) const override { |
| familyName->reset(); |
| } |
| SkTypeface::LocalizedStrings* onCreateFamilyNameIterator() const override { |
| return new EmptyLocalizedStrings; |
| } |
| int onGetVariationDesignPosition(SkFontArguments::VariationPosition::Coordinate coordinates[], |
| int coordinateCount) const override |
| { |
| return 0; |
| } |
| int onGetVariationDesignParameters(SkFontParameters::Variation::Axis parameters[], |
| int parameterCount) const override |
| { |
| return 0; |
| } |
| int onGetTableTags(SkFontTableTag tags[]) const override { return 0; } |
| size_t onGetTableData(SkFontTableTag, size_t, size_t, void*) const override { |
| return 0; |
| } |
| }; |
| |
| |
| #endif // SkTestEmptyTypeface_DEFINED |