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
|
/* -*- 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 .
*/
#include <unx/geninst.h>
#include <outdev.h>
#include <unx/fontmanager.hxx>
#include <PhysicalFontCollection.hxx>
// platform specific font substitution hooks
class FcPreMatchSubstitution
: public ImplPreMatchFontSubstitution
{
public:
bool FindFontSubstitute( FontSelectPattern& ) const override;
typedef ::std::pair<FontSelectPattern, FontSelectPattern> value_type;
private:
typedef ::std::list<value_type> CachedFontMapType;
mutable CachedFontMapType maCachedFontMap;
};
class FcGlyphFallbackSubstitution
: public ImplGlyphFallbackFontSubstitution
{
// TODO: add a cache
public:
bool FindFontSubstitute(FontSelectPattern&, LogicalFontInstance* pLogicalFont, OUString& rMissingCodes) const override;
};
void SalGenericInstance::RegisterFontSubstitutors( PhysicalFontCollection* pFontCollection )
{
// register font fallback substitutions
static FcPreMatchSubstitution aSubstPreMatch;
pFontCollection->SetPreMatchHook( &aSubstPreMatch );
// register glyph fallback substitutions
static FcGlyphFallbackSubstitution aSubstFallback;
pFontCollection->SetFallbackHook( &aSubstFallback );
}
static FontSelectPattern GetFcSubstitute(const FontSelectPattern &rFontSelData, OUString& rMissingCodes)
{
FontSelectPattern aSubstituted(rFontSelData);
psp::PrintFontManager& rMgr = psp::PrintFontManager::get();
rMgr.Substitute(aSubstituted, rMissingCodes);
return aSubstituted;
}
namespace
{
bool uselessmatch(const FontSelectPattern &rOrig, const FontSelectPattern &rNew)
{
return
(
rOrig.maTargetName == rNew.maSearchName &&
rOrig.GetWeight() == rNew.GetWeight() &&
rOrig.GetItalic() == rNew.GetItalic() &&
rOrig.GetPitch() == rNew.GetPitch() &&
rOrig.GetWidthType() == rNew.GetWidthType()
);
}
class equal
{
private:
const FontSelectPattern& mrAttributes;
public:
explicit equal(const FontSelectPattern& rAttributes)
: mrAttributes(rAttributes)
{
}
bool operator()(const FcPreMatchSubstitution::value_type& rOther) const
{ return rOther.first == mrAttributes; }
};
}
bool FcPreMatchSubstitution::FindFontSubstitute(FontSelectPattern &rFontSelData) const
{
// We don't actually want to talk to Fontconfig at all for symbol fonts
if( rFontSelData.IsSymbolFont() )
return false;
// StarSymbol is a unicode font, but it still deserves the symbol flag
if ( IsStarSymbol(rFontSelData.maSearchName) )
return false;
//see fdo#41556 and fdo#47636
//fontconfig can return e.g. an italic font for a non-italic input and/or
//different fonts depending on fontsize, bold, etc settings so don't cache
//just on the name, cache map all the input and all the output not just map
//from original selection to output fontname
FontSelectPattern& rPatternAttributes = rFontSelData;
CachedFontMapType &rCachedFontMap = maCachedFontMap;
CachedFontMapType::iterator itr = std::find_if(rCachedFontMap.begin(), rCachedFontMap.end(), equal(rPatternAttributes));
if (itr != rCachedFontMap.end())
{
// Cached substitution
rFontSelData = itr->second;
if (itr != rCachedFontMap.begin())
{
// MRU, move it to the front
rCachedFontMap.splice(rCachedFontMap.begin(), rCachedFontMap, itr);
}
return true;
}
OUString aDummy;
const FontSelectPattern aOut = GetFcSubstitute( rFontSelData, aDummy );
if( aOut.maSearchName.isEmpty() )
return false;
const bool bHaveSubstitute = !uselessmatch( rFontSelData, aOut );
#ifdef DEBUG
const OString aOrigName(OUStringToOString(rFontSelData.maTargetName,
RTL_TEXTENCODING_UTF8));
const OString aSubstName(OUStringToOString(aOut.maSearchName,
RTL_TEXTENCODING_UTF8));
printf( "FcPreMatchSubstitution \"%s\" bipw=%d%d%d%d -> ",
aOrigName.getStr(), rFontSelData.GetWeight(), rFontSelData.GetItalic(),
rFontSelData.GetPitch(), rFontSelData.GetWidthType() );
if( !bHaveSubstitute )
printf( "no substitute available\n" );
else
printf( "\"%s\" bipw=%d%d%d%d\n", aSubstName.getStr(),
aOut.GetWeight(), aOut.GetItalic(), aOut.GetPitch(), aOut.GetWidthType() );
#endif
if( bHaveSubstitute )
{
rCachedFontMap.push_front(value_type(rFontSelData, aOut));
// Fairly arbitrary limit in this case, but I recall measuring max 8
// fonts as the typical max amount of fonts in medium sized documents, so make it
// a fair chunk larger to accommodate weird documents./
if (rCachedFontMap.size() > 256)
rCachedFontMap.pop_back();
rFontSelData = aOut;
}
return bHaveSubstitute;
}
bool FcGlyphFallbackSubstitution::FindFontSubstitute(FontSelectPattern& rFontSelData,
LogicalFontInstance* /*pLogicalFont*/,
OUString& rMissingCodes ) const
{
// We don't actually want to talk to Fontconfig at all for symbol fonts
if( rFontSelData.IsSymbolFont() )
return false;
// StarSymbol is a unicode font, but it still deserves the symbol flag
if ( IsStarSymbol(rFontSelData.maSearchName) )
return false;
const FontSelectPattern aOut = GetFcSubstitute( rFontSelData, rMissingCodes );
// TODO: cache the unicode + srcfont specific result
// FC doing it would be preferable because it knows the invariables
// e.g. FC knows the FC rule that all Arial gets replaced by LiberationSans
// whereas we would have to check for every size or attribute
if( aOut.maSearchName.isEmpty() )
return false;
const bool bHaveSubstitute = !uselessmatch( rFontSelData, aOut );
#ifdef DEBUG
const OString aOrigName(OUStringToOString(rFontSelData.maTargetName,
RTL_TEXTENCODING_UTF8));
const OString aSubstName(OUStringToOString(aOut.maSearchName,
RTL_TEXTENCODING_UTF8));
printf( "FcGFSubstitution \"%s\" bipw=%d%d%d%d ->",
aOrigName.getStr(), rFontSelData.GetWeight(), rFontSelData.GetItalic(),
rFontSelData.GetPitch(), rFontSelData.GetWidthType() );
if( !bHaveSubstitute )
printf( "no substitute available\n" );
else
printf( "\"%s\" bipw=%d%d%d%d\n", aSubstName.getStr(),
aOut.GetWeight(), aOut.GetItalic(), aOut.GetPitch(), aOut.GetWidthType() );
#endif
if( bHaveSubstitute )
rFontSelData = aOut;
return bHaveSubstitute;
}
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
|
