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/*
* 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::getAdvancedMetrics.
*/
struct SkAdvancedTypefaceMetrics {
SkAdvancedTypefaceMetrics() {}
SkAdvancedTypefaceMetrics(const SkAdvancedTypefaceMetrics&) = delete;
SkAdvancedTypefaceMetrics& operator=(const SkAdvancedTypefaceMetrics&) = delete;
~SkAdvancedTypefaceMetrics() {}
// The PostScript name of the font. See `FontName` and `BaseFont` in PDF standard.
SkString fPostScriptName;
SkString fFontName;
// 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 = (StyleFlags)0; // Font style characteristics.
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 = kOther_Font;
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 = (FontFlags)0; // Global font flags.
int16_t fItalicAngle = 0; // Counterclockwise degrees from vertical of the
// dominant vertical stroke for an Italic face.
// The following fields are all in font units.
int16_t fAscent = 0; // Max height above baseline, not including accents.
int16_t fDescent = 0; // Max depth below baseline (negative).
int16_t fStemV = 0; // Thickness of dominant vertical stem.
int16_t fCapHeight = 0; // Height (from baseline) of top of flat capitals.
SkIRect fBBox = {0, 0, 0, 0}; // 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; array indices are glyph ids.
SkTDArray<SkUnichar> fGlyphToUnicode;
};
namespace skstd {
template <> struct is_bitmask_enum<SkAdvancedTypefaceMetrics::FontFlags> : std::true_type {};
template <> struct is_bitmask_enum<SkAdvancedTypefaceMetrics::StyleFlags> : std::true_type {};
}
#endif