1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
|
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/*
* This file is part of the LibreOffice project.
*
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/.
*
* This file incorporates work covered by the following license notice:
*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed
* with this work for additional information regarding copyright
* ownership. The ASF licenses this file to you under the Apache
* License, Version 2.0 (the "License"); you may not use this file
* except in compliance with the License. You may obtain a copy of
* the License at http://www.apache.org/licenses/LICENSE-2.0 .
*/
#pragma once
#include <sal/config.h>
#include <i18nlangtag/languagetag.hxx>
#include <rtl/ref.hxx>
#include <salhelper/simplereferenceobject.hxx>
#include <tools/color.hxx>
#include <vcl/dllapi.h>
#include <vcl/fontcapabilities.hxx>
#include <vcl/fontcharmap.hxx>
#include <fontattributes.hxx>
#include <fontsubset.hxx>
#include <hb.h>
#include <hb-ot.h>
class LogicalFontInstance;
struct FontMatchStatus;
namespace vcl::font
{
class FontSelectPattern;
}
namespace vcl
{
class PhysicalFontFamily;
}
namespace vcl::font
{
class FontSelectPattern;
struct FontMatchStatus
{
public:
int mnFaceMatch;
const OUString* mpTargetStyleName;
};
struct RawFontData
{
public:
RawFontData(hb_blob_t* pBlob = nullptr)
: mpBlob(pBlob ? pBlob : hb_blob_get_empty())
{
}
RawFontData(const RawFontData& rOther)
: mpBlob(hb_blob_reference(rOther.mpBlob))
{
}
~RawFontData() { hb_blob_destroy(mpBlob); }
RawFontData& operator=(const RawFontData& rOther)
{
hb_blob_destroy(mpBlob);
mpBlob = hb_blob_reference(rOther.mpBlob);
return *this;
}
size_t size() const { return hb_blob_get_length(mpBlob); }
bool empty() const { return size() == 0; }
const uint8_t* data() const
{
return reinterpret_cast<const uint8_t*>(hb_blob_get_data(mpBlob, nullptr));
}
private:
hb_blob_t* mpBlob;
};
struct ColorLayer
{
sal_GlyphId nGlyphIndex;
uint32_t nColorIndex;
};
typedef std::vector<Color> ColorPalette;
// https://learn.microsoft.com/en-us/typography/opentype/spec/name#name-ids
typedef enum : hb_ot_name_id_t {
NAME_ID_COPYRIGHT = 0,
NAME_ID_FONT_FAMILY = 1,
NAME_ID_FONT_SUBFAMILY = 2,
NAME_ID_UNIQUE_ID = 3,
NAME_ID_FULL_NAME = 4,
NAME_ID_VERSION_STRING = 5,
NAME_ID_POSTSCRIPT_NAME = 6,
NAME_ID_TRADEMARK = 7,
NAME_ID_MANUFACTURER = 8,
NAME_ID_DESIGNER = 9,
NAME_ID_DESCRIPTION = 10,
NAME_ID_VENDOR_URL = 11,
NAME_ID_DESIGNER_URL = 12,
NAME_ID_LICENSE = 13,
NAME_ID_LICENSE_URL = 14,
//NAME_ID_RESERVED = 15,
NAME_ID_TYPOGRAPHIC_FAMILY = 16,
NAME_ID_TYPOGRAPHIC_SUBFAMILY = 17,
NAME_ID_MAC_FULL_NAME = 18,
NAME_ID_SAMPLE_TEXT = 19,
NAME_ID_CID_FINDFONT_NAME = 20,
NAME_ID_WWS_FAMILY = 21,
NAME_ID_WWS_SUBFAMILY = 22,
NAME_ID_LIGHT_BACKGROUND = 23,
NAME_ID_DARK_BACKGROUND = 24,
NAME_ID_VARIATIONS_PS_PREFIX = 25,
} NameID;
// TODO: no more direct access to members
// TODO: get rid of height/width for scalable fonts
// TODO: make cloning cheaper
/**
* abstract base class for physical font faces
*
* It acts as a factory for its corresponding LogicalFontInstances and
* can be extended to cache device and font instance specific data.
*/
class VCL_PLUGIN_PUBLIC PhysicalFontFace : public FontAttributes,
public salhelper::SimpleReferenceObject
{
public:
~PhysicalFontFace();
virtual rtl::Reference<LogicalFontInstance>
CreateFontInstance(const vcl::font::FontSelectPattern&) const = 0;
virtual sal_IntPtr GetFontId() const = 0;
virtual FontCharMapRef GetFontCharMap() const;
virtual bool GetFontCapabilities(vcl::FontCapabilities&) const;
SAL_DLLPRIVATE RawFontData GetRawFontData(uint32_t) const;
bool IsBetterMatch(const vcl::font::FontSelectPattern&, FontMatchStatus&) const;
sal_Int32 CompareIgnoreSize(const PhysicalFontFace&) const;
// CreateFontSubset: a method to get a subset of glyphs of a font inside a
// new valid font file
// returns true if creation of subset was successful
// parameters: rOutBuffer: vector to write the subset to
// pGlyphIDs: the glyph ids to be extracted
// pEncoding: the character code corresponding to each glyph
// nGlyphs: the number of glyphs
// rInfo: additional outgoing information
// implementation note: encoding 0 with glyph id 0 should be added implicitly
// as "undefined character"
SAL_DLLPRIVATE bool CreateFontSubset(std::vector<sal_uInt8>&, const sal_GlyphId*,
const sal_uInt8*, const int, FontSubsetInfo&) const;
bool IsColorFont() const { return HasColorLayers() || HasColorBitmaps(); }
bool HasColorLayers() const;
SAL_DLLPRIVATE std::vector<ColorLayer> GetGlyphColorLayers(sal_GlyphId) const;
SAL_DLLPRIVATE const std::vector<ColorPalette>& GetColorPalettes() const;
bool HasColorBitmaps() const;
SAL_DLLPRIVATE RawFontData GetGlyphColorBitmap(sal_GlyphId, tools::Rectangle&) const;
OString GetGlyphName(sal_GlyphId, bool = false) const;
uint32_t UnitsPerEm() const { return hb_face_get_upem(GetHbFace()); }
OUString GetName(NameID, const LanguageTag&) const;
OUString GetName(NameID aNameID) const { return GetName(aNameID, LanguageTag(LANGUAGE_NONE)); }
virtual hb_face_t* GetHbFace() const;
virtual hb_blob_t* GetHbTable(hb_tag_t) const
{
assert(false);
return nullptr;
}
virtual const std::vector<hb_variation_t>& GetVariations(const LogicalFontInstance&) const;
protected:
mutable hb_face_t* mpHbFace;
mutable hb_font_t* mpHbUnscaledFont;
mutable FontCharMapRef mxCharMap;
mutable std::optional<vcl::FontCapabilities> mxFontCapabilities;
mutable std::optional<std::vector<ColorPalette>> mxColorPalettes;
mutable std::optional<std::vector<hb_variation_t>> mxVariations;
explicit PhysicalFontFace(const FontAttributes&);
SAL_DLLPRIVATE hb_font_t* GetHbUnscaledFont() const;
};
}
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
|
