| /* |
| * Copyright 2011 Google Inc. |
| * |
| * Use of this source code is governed by a BSD-style license that can be |
| * found in the LICENSE file. |
| */ |
| |
| #ifndef SkAdvancedTypefaceMetrics_DEFINED |
| #define SkAdvancedTypefaceMetrics_DEFINED |
| |
| #include "SkBitmaskEnum.h" |
| #include "SkRect.h" |
| #include "SkRefCnt.h" |
| #include "SkString.h" |
| #include "SkTDArray.h" |
| |
| /** \class SkAdvancedTypefaceMetrics |
| |
| The SkAdvancedTypefaceMetrics class is used by the PDF backend to correctly |
| embed typefaces. This class is created and filled in with information by |
| SkTypeface::getAdvancedTypefaceMetrics. |
| */ |
| class SkAdvancedTypefaceMetrics : public SkRefCnt { |
| public: |
| |
| SkAdvancedTypefaceMetrics() |
| : fType(SkAdvancedTypefaceMetrics::kOther_Font) |
| , fFlags((FontFlags)0) |
| , fLastGlyphID(0) |
| , fEmSize(0) |
| , fStyle((StyleFlags)0) |
| , fItalicAngle(0) |
| , fAscent(0) |
| , fDescent(0) |
| , fStemV(0) |
| , fCapHeight(0) |
| , fBBox(SkIRect::MakeEmpty()) {} |
| |
| ~SkAdvancedTypefaceMetrics() {} |
| |
| SkString fFontName; |
| |
| enum FontType : uint8_t { |
| kType1_Font, |
| kType1CID_Font, |
| kCFF_Font, |
| kTrueType_Font, |
| kOther_Font, |
| }; |
| // The type of the underlying font program. This field determines which |
| // of the following fields are valid. If it is kOther_Font the per glyph |
| // information will never be populated. |
| FontType fType; |
| |
| enum FontFlags : uint8_t { |
| kMultiMaster_FontFlag = 0x01, //!<May be true for Type1, CFF, or TrueType fonts. |
| kNotEmbeddable_FontFlag = 0x02, //!<May not be embedded. |
| kNotSubsettable_FontFlag = 0x04, //!<May not be subset. |
| }; |
| FontFlags fFlags; // Global font flags. |
| |
| uint16_t fLastGlyphID; // The last valid glyph ID in the font. |
| uint16_t fEmSize; // The size of the em box (defines font units). |
| |
| // These enum values match the values used in the PDF file format. |
| enum StyleFlags : uint32_t { |
| kFixedPitch_Style = 0x00000001, |
| kSerif_Style = 0x00000002, |
| kScript_Style = 0x00000008, |
| kItalic_Style = 0x00000040, |
| kAllCaps_Style = 0x00010000, |
| kSmallCaps_Style = 0x00020000, |
| kForceBold_Style = 0x00040000 |
| }; |
| StyleFlags fStyle; // Font style characteristics. |
| |
| int16_t fItalicAngle; // Counterclockwise degrees from vertical of the |
| // dominant vertical stroke for an Italic face. |
| // The following fields are all in font units. |
| int16_t fAscent; // Max height above baseline, not including accents. |
| int16_t fDescent; // Max depth below baseline (negative). |
| int16_t fStemV; // Thickness of dominant vertical stem. |
| int16_t fCapHeight; // Height (from baseline) of top of flat capitals. |
| |
| SkIRect fBBox; // The bounding box of all glyphs (in font units). |
| |
| // The names of each glyph, only populated for postscript fonts. |
| SkTArray<SkString> fGlyphNames; |
| |
| // The mapping from glyph to Unicode, only populated if |
| // kToUnicode_PerGlyphInfo is passed to GetAdvancedTypefaceMetrics. |
| SkTDArray<SkUnichar> fGlyphToUnicode; |
| |
| private: |
| typedef SkRefCnt INHERITED; |
| }; |
| |
| namespace skstd { |
| template <> struct is_bitmask_enum<SkAdvancedTypefaceMetrics::FontFlags> : std::true_type {}; |
| template <> struct is_bitmask_enum<SkAdvancedTypefaceMetrics::StyleFlags> : std::true_type {}; |
| } |
| |
| #endif |