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
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
|
/* -*- 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 .
*/
#ifndef INCLUDED_VCL_INC_GENERIC_GLYPHCACHE_HXX
#define INCLUDED_VCL_INC_GENERIC_GLYPHCACHE_HXX
#include <config_graphite.h>
#include <ft2build.h>
#include FT_FREETYPE_H
#include FT_GLYPH_H
#include <com/sun/star/i18n/XBreakIterator.hpp>
#include <tools/gen.hxx>
#include <vcl/dllapi.h>
#include <vcl/metric.hxx>
#include <fontinstance.hxx>
#include <sallayout.hxx>
#include "fontattributes.hxx"
#include "impfontmetricdata.hxx"
#include <unordered_map>
class FreetypeManager;
class FreetypeFontInfo;
class GlyphData;
class GraphiteFaceWrapper;
class FontConfigFontOptions;
class PhysicalFontCollection;
class ServerFont;
class ServerFontLayout;
class ServerFontLayoutEngine;
class SvpGcpHelper;
namespace basegfx { class B2DPolyPolygon; }
namespace vcl { struct FontCapabilities; }
class VCL_DLLPUBLIC GlyphCache
{
public:
explicit GlyphCache();
virtual ~GlyphCache();
static GlyphCache& GetInstance();
void AddFontFile(
const OString& rNormalizedName,
int nFaceNum, sal_IntPtr nFontId,
const FontAttributes&);
void AnnounceFonts( PhysicalFontCollection* ) const;
ServerFont* CacheFont( const FontSelectPattern& );
void UncacheFont( ServerFont& );
void ClearFontCache();
void InvalidateAllGlyphs();
private:
friend class ServerFont;
// used by ServerFont class only
void AddedGlyph( ServerFont&, GlyphData& );
void RemovingGlyph();
void UsingGlyph( ServerFont&, GlyphData& );
void GrowNotify();
private:
void GarbageCollect();
// the GlyphCache's FontList matches a font request to a serverfont instance
// the FontList key's mpFontData member is reinterpreted as integer font id
struct IFSD_Equal{ bool operator()( const FontSelectPattern&, const FontSelectPattern& ) const; };
struct IFSD_Hash{ size_t operator()( const FontSelectPattern& ) const; };
typedef std::unordered_map<FontSelectPattern,ServerFont*,IFSD_Hash,IFSD_Equal > FontList;
FontList maFontList;
sal_uLong mnMaxSize; // max overall cache size in bytes
mutable sal_uLong mnBytesUsed;
mutable long mnLruIndex;
mutable int mnGlyphCount;
ServerFont* mpCurrentGCFont;
FreetypeManager* mpFtManager;
};
class GlyphMetric
{
public:
GlyphMetric() : mnAdvanceWidth(0) {}
const Point& GetOffset() const { return maOffset; }
const Size& GetSize() const { return maSize; }
long GetCharWidth() const { return mnAdvanceWidth; }
protected:
friend class GlyphData;
void SetOffset( int nX, int nY ) { maOffset = Point( nX, nY); }
void SetDelta( int nX, int nY ) { maDelta = Point( nX, nY); }
void SetSize( const Size& s ) { maSize = s; }
void SetCharWidth( long nW ) { mnAdvanceWidth = nW; }
private:
long mnAdvanceWidth;
Point maDelta;
Point maOffset;
Size maSize;
};
class GlyphData
{
public:
GlyphData() : mnLruValue(0) {}
const GlyphMetric& GetMetric() const { return maGlyphMetric; }
void SetSize( const Size& s) { maGlyphMetric.SetSize( s ); }
void SetOffset( int nX, int nY ) { maGlyphMetric.SetOffset( nX, nY ); }
void SetDelta( int nX, int nY ) { maGlyphMetric.SetDelta( nX, nY ); }
void SetCharWidth( long nW ) { maGlyphMetric.SetCharWidth( nW ); }
void SetLruValue( int n ) const { mnLruValue = n; }
long GetLruValue() const { return mnLruValue;}
private:
GlyphMetric maGlyphMetric;
// used by GlyphCache for cache LRU algorithm
mutable long mnLruValue;
};
class VCL_DLLPUBLIC ServerFont
{
public:
ServerFont( const FontSelectPattern&, FreetypeFontInfo* );
virtual ~ServerFont();
const OString& GetFontFileName() const;
bool TestFont() const { return mbFaceOk;}
FT_Face GetFtFace() const;
int GetLoadFlags() const { return (mnLoadFlags & ~FT_LOAD_IGNORE_TRANSFORM); }
void SetFontOptions(const std::shared_ptr<FontConfigFontOptions>&);
const std::shared_ptr<FontConfigFontOptions>& GetFontOptions() const;
bool NeedsArtificialBold() const { return mbArtBold; }
bool NeedsArtificialItalic() const { return mbArtItalic; }
const FontSelectPattern& GetFontSelData() const { return maFontSelData; }
void GetFontMetric( ImplFontMetricDataPtr&, long& rFactor ) const;
const unsigned char* GetTable( const char* pName, sal_uLong* pLength );
int GetEmUnits() const { return maFaceFT->units_per_EM;}
double GetStretch() { return mfStretch; }
const FontCharMapPtr GetFontCharMap() const;
bool GetFontCapabilities(vcl::FontCapabilities &) const;
GlyphData& GetGlyphData( sal_GlyphId );
const GlyphMetric& GetGlyphMetric( sal_GlyphId aGlyphId )
{ return GetGlyphData( aGlyphId ).GetMetric(); }
#if ENABLE_GRAPHITE
GraphiteFaceWrapper* GetGraphiteFace() const;
#endif
sal_GlyphId GetGlyphIndex( sal_UCS4 ) const;
sal_GlyphId GetRawGlyphIndex( sal_UCS4, sal_UCS4 = 0 ) const;
sal_GlyphId FixupGlyphIndex( sal_GlyphId aGlyphId, sal_UCS4 ) const;
bool GetGlyphOutline( sal_GlyphId aGlyphId, basegfx::B2DPolyPolygon& ) const;
bool GetAntialiasAdvice() const;
private:
friend class GlyphCache;
friend class ServerFontLayout;
friend class ServerFontInstance;
friend class X11SalGraphics;
friend class CairoTextRender;
void AddRef() const { ++mnRefCount; }
long GetRefCount() const { return mnRefCount; }
long Release() const;
sal_uLong GetByteCount() const { return mnBytesUsed; }
void InitGlyphData( sal_GlyphId, GlyphData& ) const;
void GarbageCollect( long );
void ReleaseFromGarbageCollect();
void ApplyGlyphTransform( int nGlyphFlags, FT_GlyphRec_*, bool ) const;
void ApplyGSUB( const FontSelectPattern& );
ServerFontLayoutEngine* GetLayoutEngine();
typedef std::unordered_map<int,GlyphData> GlyphList;
mutable GlyphList maGlyphList;
const FontSelectPattern maFontSelData;
// used by GlyphCache for cache LRU algorithm
mutable long mnRefCount;
mutable sal_uLong mnBytesUsed;
ServerFont* mpPrevGCFont;
ServerFont* mpNextGCFont;
// 16.16 fixed point values used for a rotated font
long mnCos;
long mnSin;
int mnWidth;
int mnPrioEmbedded;
int mnPrioAntiAlias;
int mnPrioAutoHint;
FreetypeFontInfo* mpFontInfo;
FT_Int mnLoadFlags;
double mfStretch;
FT_FaceRec_* maFaceFT;
FT_SizeRec_* maSizeFT;
std::shared_ptr<FontConfigFontOptions> mxFontOptions;
bool mbFaceOk;
bool mbArtItalic;
bool mbArtBold;
bool mbUseGamma;
typedef std::unordered_map<int,int> GlyphSubstitution;
GlyphSubstitution maGlyphSubstitution;
ServerFontLayoutEngine* mpLayoutEngine;
};
// a class for cache entries for physical font instances that are based on serverfonts
class VCL_DLLPUBLIC ServerFontInstance : public LogicalFontInstance
{
public:
ServerFontInstance( FontSelectPattern& );
virtual ~ServerFontInstance();
void SetServerFont(ServerFont* p);
void HandleFontOptions();
private:
ServerFont* mpServerFont;
std::shared_ptr<FontConfigFontOptions> mxFontOptions;
bool mbGotFontOptions;
};
class VCL_DLLPUBLIC ServerFontLayout : public GenericSalLayout
{
public:
ServerFontLayout( ServerFont& );
virtual bool LayoutText( ImplLayoutArgs& ) override;
virtual void AdjustLayout( ImplLayoutArgs& ) override;
virtual void DrawText( SalGraphics& ) const override;
void SetNeedFallback(
ImplLayoutArgs& rArgs,
sal_Int32 nIndex,
bool bRightToLeft);
ServerFont& GetServerFont() const { return mrServerFont; }
virtual std::shared_ptr<vcl::TextLayoutCache>
CreateTextLayoutCache(OUString const&) const override;
private:
ServerFont& mrServerFont;
css::uno::Reference<css::i18n::XBreakIterator> mxBreak;
ServerFontLayout( const ServerFontLayout& ) = delete;
ServerFontLayout& operator=( const ServerFontLayout& ) = delete;
};
class ServerFontLayoutEngine
{
public:
virtual ~ServerFontLayoutEngine() {}
virtual bool Layout(ServerFontLayout&, ImplLayoutArgs&) = 0;
};
#endif // INCLUDED_VCL_INC_GENERIC_GLYPHCACHE_HXX
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
|
