1/*
2 * Copyright 2011 Google Inc.
3 *
4 * Use of this source code is governed by a BSD-style license that can be
5 * found in the LICENSE file.
6 */
7
8#ifndef SkAdvancedTypefaceMetrics_DEFINED
9#define SkAdvancedTypefaceMetrics_DEFINED
10
11#include "include/core/SkRect.h"
12#include "include/core/SkString.h"
13#include "include/private/SkBitmaskEnum.h"
14
15/** \class SkAdvancedTypefaceMetrics
16
17 The SkAdvancedTypefaceMetrics class is used by the PDF backend to correctly
18 embed typefaces. This class is created and filled in with information by
19 SkTypeface::getAdvancedMetrics.
20*/
21struct SkAdvancedTypefaceMetrics {
22 // The PostScript name of the font. See `FontName` and `BaseFont` in PDF standard.
23 SkString fPostScriptName;
24 SkString fFontName;
25
26 // These enum values match the values used in the PDF file format.
27 enum StyleFlags : uint32_t {
28 kFixedPitch_Style = 0x00000001,
29 kSerif_Style = 0x00000002,
30 kScript_Style = 0x00000008,
31 kItalic_Style = 0x00000040,
32 kAllCaps_Style = 0x00010000,
33 kSmallCaps_Style = 0x00020000,
34 kForceBold_Style = 0x00040000
35 };
36 StyleFlags fStyle = (StyleFlags)0; // Font style characteristics.
37
38 enum FontType : uint8_t {
39 kType1_Font,
40 kType1CID_Font,
41 kCFF_Font,
42 kTrueType_Font,
43 kOther_Font,
44 };
45 // The type of the underlying font program. This field determines which
46 // of the following fields are valid. If it is kOther_Font the per glyph
47 // information will never be populated.
48 FontType fType = kOther_Font;
49
50 enum FontFlags : uint8_t {
51 kMultiMaster_FontFlag = 0x01, //!<May be true for Type1, CFF, or TrueType fonts.
52 kNotEmbeddable_FontFlag = 0x02, //!<May not be embedded.
53 kNotSubsettable_FontFlag = 0x04, //!<May not be subset.
54 };
55 FontFlags fFlags = (FontFlags)0; // Global font flags.
56
57 int16_t fItalicAngle = 0; // Counterclockwise degrees from vertical of the
58 // dominant vertical stroke for an Italic face.
59 // The following fields are all in font units.
60 int16_t fAscent = 0; // Max height above baseline, not including accents.
61 int16_t fDescent = 0; // Max depth below baseline (negative).
62 int16_t fStemV = 0; // Thickness of dominant vertical stem.
63 int16_t fCapHeight = 0; // Height (from baseline) of top of flat capitals.
64
65 SkIRect fBBox = {0, 0, 0, 0}; // The bounding box of all glyphs (in font units).
66};
67
68namespace skstd {
69template <> struct is_bitmask_enum<SkAdvancedTypefaceMetrics::FontFlags> : std::true_type {};
70template <> struct is_bitmask_enum<SkAdvancedTypefaceMetrics::StyleFlags> : std::true_type {};
71}
72
73#endif
74