| /* |
| * Copyright 2014 Google Inc. |
| * |
| * Use of this source code is governed by a BSD-style license that can be |
| * found in the LICENSE file. |
| */ |
| |
| #ifndef SkTestScalerContext_DEFINED |
| #define SkTestScalerContext_DEFINED |
| |
| #include "SkFixed.h" |
| #include "SkPaint.h" |
| #include "SkPath.h" |
| #include "SkRefCnt.h" |
| #include "SkTDArray.h" |
| #include "SkTypeface.h" |
| |
| class SkTestFont; |
| |
| struct SkTestFontData { |
| const SkScalar* fPoints; |
| const unsigned char* fVerbs; |
| const unsigned* fCharCodes; |
| const size_t fCharCodesCount; |
| const SkFixed* fWidths; |
| const SkPaint::FontMetrics& fMetrics; |
| const char* fName; |
| SkTypeface::Style fStyle; |
| sk_sp<SkTestFont> fCachedFont; |
| }; |
| |
| class SkTestFont : public SkRefCnt { |
| public: |
| SkTestFont(const SkTestFontData& ); |
| virtual ~SkTestFont(); |
| int codeToIndex(SkUnichar charCode) const; |
| void init(const SkScalar* pts, const unsigned char* verbs); |
| #ifdef SK_DEBUG // detect missing test font data |
| mutable unsigned char fDebugBits[16]; |
| mutable SkUnichar fDebugOverage[8]; |
| const char* fDebugName; |
| SkFontStyle fDebugStyle; |
| const char* debugFontName() const { return fName; } |
| #endif |
| private: |
| const unsigned* fCharCodes; |
| const size_t fCharCodesCount; |
| const SkFixed* fWidths; |
| const SkPaint::FontMetrics& fMetrics; |
| const char* fName; |
| SkPath** fPaths; |
| friend class SkTestTypeface; |
| typedef SkRefCnt INHERITED; |
| }; |
| |
| |
| class SkTestTypeface : public SkTypeface { |
| public: |
| SkTestTypeface(sk_sp<SkTestFont>, const SkFontStyle& style); |
| void getAdvance(SkGlyph* glyph); |
| void getFontMetrics(SkPaint::FontMetrics* metrics); |
| void getMetrics(SkGlyph* glyph); |
| void getPath(SkGlyphID glyph, SkPath* path); |
| protected: |
| SkScalerContext* onCreateScalerContext(const SkScalerContextEffects&, |
| const SkDescriptor* desc) const override; |
| void onFilterRec(SkScalerContextRec* rec) const override; |
| std::unique_ptr<SkAdvancedTypefaceMetrics> onGetAdvancedMetrics() const override; |
| |
| SkStreamAsset* onOpenStream(int* ttcIndex) const override { |
| return nullptr; |
| } |
| |
| void onGetFontDescriptor(SkFontDescriptor* desc, bool* isLocal) const override; |
| |
| int onCharsToGlyphs(const void* chars, Encoding encoding, |
| uint16_t glyphs[], int glyphCount) const override; |
| |
| int onCountGlyphs() const override { |
| return (int) fTestFont->fCharCodesCount; |
| } |
| |
| int onGetUPEM() const override { |
| return 2048; |
| } |
| |
| void onGetFamilyName(SkString* familyName) const override; |
| SkTypeface::LocalizedStrings* onCreateFamilyNameIterator() const override; |
| |
| int onGetVariationDesignPosition(SkFontArguments::VariationPosition::Coordinate coordinates[], |
| int coordinateCount) const override |
| { |
| return 0; |
| } |
| |
| int onGetTableTags(SkFontTableTag tags[]) const override { |
| return 0; |
| } |
| |
| size_t onGetTableData(SkFontTableTag tag, size_t offset, |
| size_t length, void* data) const override { |
| return 0; |
| } |
| private: |
| sk_sp<SkTestFont> fTestFont; |
| friend class SkTestScalerContext; |
| }; |
| |
| SkTypeface* CreateTestTypeface(const char* name, SkTypeface::Style style); |
| |
| #endif |