/src/libreoffice/vcl/inc/font/fontsubstitution.hxx
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1 | | /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4; fill-column: 100 -*- */ |
2 | | /* |
3 | | * This file is part of the LibreOffice project. |
4 | | * |
5 | | * This Source Code Form is subject to the terms of the Mozilla Public |
6 | | * License, v. 2.0. If a copy of the MPL was not distributed with this |
7 | | * file, You can obtain one at http://mozilla.org/MPL/2.0/. |
8 | | * |
9 | | * This file incorporates work covered by the following license notice: |
10 | | * |
11 | | * Licensed to the Apache Software Foundation (ASF) under one or more |
12 | | * contributor license agreements. See the NOTICE file distributed |
13 | | * with this work for additional information regarding copyright |
14 | | * ownership. The ASF licenses this file to you under the Apache |
15 | | * License, Version 2.0 (the "License"); you may not use this file |
16 | | * except in compliance with the License. You may obtain a copy of |
17 | | * the License at http://www.apache.org/licenses/LICENSE-2.0 . |
18 | | */ |
19 | | |
20 | | // nowadays these substitutions are needed for backward compatibility and tight platform integration: |
21 | | // - substitutions from configuration entries (Tools->Options->FontReplacement and/or fontconfig) |
22 | | // - device specific substitutions (e.g. for PS printer builtin fonts) |
23 | | // - substitutions for missing fonts defined by configuration entries (generic and/or platform dependent fallbacks) |
24 | | // - substitutions for missing fonts defined by multi-token fontnames (e.g. fontname="SpecialFont;FallbackA;FallbackB") |
25 | | // - substitutions for incomplete fonts (implicit, generic, EUDC and/or platform dependent fallbacks) |
26 | | // - substitutions for missing symbol fonts by translating code points into other symbol fonts |
27 | | |
28 | | #pragma once |
29 | | |
30 | | #include <sal/config.h> |
31 | | |
32 | | #include <rtl/ustring.hxx> |
33 | | |
34 | | #include <font/FontSelectPattern.hxx> |
35 | | |
36 | | class LogicalFontInstance; |
37 | | |
38 | | namespace vcl::font |
39 | | { |
40 | | class FontSelectPattern; |
41 | | |
42 | | class FontSubstitution |
43 | | { |
44 | | // TODO: there is more commonality between the different substitutions |
45 | | protected: |
46 | 46 | virtual ~FontSubstitution() {} |
47 | | }; |
48 | | |
49 | | /// Abstracts the concept of finding the best font to support an incomplete font |
50 | | class GlyphFallbackFontSubstitution : public FontSubstitution |
51 | | { |
52 | | public: |
53 | | virtual bool FindFontSubstitute(vcl::font::FontSelectPattern&, |
54 | | LogicalFontInstance* pLogicalFont, |
55 | | OUString& rMissingCodes) const = 0; |
56 | | }; |
57 | | |
58 | | /** Abstracts the concept of a configured font substitution before the |
59 | | availability of the originally selected font has been checked. |
60 | | */ |
61 | | class PreMatchFontSubstitution : public FontSubstitution |
62 | | { |
63 | | public: |
64 | | virtual bool FindFontSubstitute(vcl::font::FontSelectPattern&) const = 0; |
65 | | }; |
66 | | |
67 | | void ImplFontSubstitute(OUString& rFontName); |
68 | | } |
69 | | |
70 | | /* vim:set shiftwidth=4 softtabstop=4 expandtab cinoptions=b1,g0,N-s cinkeys+=0=break: */ |