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- /*
- * 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 TestEmptyTypeface_DEFINED
- #define TestEmptyTypeface_DEFINED
- #include "include/core/SkStream.h"
- #include "include/core/SkTypeface.h"
- #include "src/core/SkAdvancedTypefaceMetrics.h"
- class TestEmptyTypeface : public SkTypeface {
- public:
- static sk_sp<SkTypeface> Make() { return sk_sp<SkTypeface>(new TestEmptyTypeface); }
- protected:
- TestEmptyTypeface() : SkTypeface(SkFontStyle(), true) {}
- std::unique_ptr<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 {}
- void onCharsToGlyphs(const SkUnichar* chars, int count, SkGlyphID glyphs[]) const override {
- sk_bzero(glyphs, count * sizeof(glyphs[0]));
- }
- int onCountGlyphs() const override { return 0; }
- void getPostScriptGlyphNames(SkString*) const override {}
- void getGlyphToUnicodeMap(SkUnichar*) const override {}
- 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 // TestEmptyTypeface_DEFINED
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