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1 : /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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 : #include <tools/debug.hxx>
21 :
22 : #include <osl/diagnose.h>
23 :
24 : #include <fontsubset.hxx>
25 : #include <sft.hxx>
26 :
27 0 : FontSubsetInfo::FontSubsetInfo()
28 : : m_nAscent( 0)
29 : , m_nDescent( 0)
30 : , m_nCapHeight( 0)
31 : , m_nFontType( FontSubsetInfo::NO_FONT)
32 : , mpInFontBytes( NULL)
33 : , mnInByteLength( 0)
34 : , meInFontType( FontSubsetInfo::NO_FONT)
35 : , mpSftTTFont( NULL)
36 : , mnReqFontTypeMask(0)
37 : , mpOutFile(NULL)
38 : , mpReqFontName(NULL)
39 : , mpReqGlyphIds(NULL)
40 : , mpReqEncodedIds(NULL)
41 0 : , mnReqGlyphCount(0)
42 : {
43 0 : }
44 :
45 0 : FontSubsetInfo::~FontSubsetInfo()
46 : {
47 0 : }
48 :
49 : // prepare subsetting for fonts where the input font file is mapped
50 0 : bool FontSubsetInfo::LoadFont(
51 : FontSubsetInfo::FontType eInFontType,
52 : const unsigned char* pInFontBytes, int nInByteLength)
53 : {
54 : DBG_ASSERT( (mpSftTTFont == NULL), "Subset from SFT and from mapped font-file requested");
55 0 : meInFontType = eInFontType;
56 0 : mpInFontBytes = pInFontBytes;
57 0 : mnInByteLength = nInByteLength;
58 0 : return (mnInByteLength > 0);
59 : }
60 :
61 : // prepare subsetting for fonts that are known to the SFT-parser
62 0 : bool FontSubsetInfo::LoadFont( vcl::_TrueTypeFont* pSftTTFont )
63 : {
64 : DBG_ASSERT( (mpInFontBytes == NULL), "Subset from SFT and from mapped font-file requested");
65 0 : mpSftTTFont = pSftTTFont;
66 0 : meInFontType = ANY_SFNT;
67 0 : return (mpSftTTFont == NULL);
68 : }
69 :
70 0 : bool FontSubsetInfo::CreateFontSubset(
71 : int nReqFontTypeMask,
72 : FILE* pOutFile, const char* pReqFontName,
73 : const sal_GlyphId* pReqGlyphIds, const sal_uInt8* pReqEncodedIds, int nReqGlyphCount,
74 : sal_Int32* pOutGlyphWidths)
75 : {
76 : // prepare request details needed by all underlying subsetters
77 0 : mnReqFontTypeMask = nReqFontTypeMask;
78 0 : mpOutFile = pOutFile;
79 0 : mpReqFontName = pReqFontName;
80 0 : mpReqGlyphIds = pReqGlyphIds;
81 0 : mpReqEncodedIds = pReqEncodedIds;
82 0 : mnReqGlyphCount = nReqGlyphCount;
83 :
84 : // TODO: move the glyphid/encid/notdef reshuffling from the callers to here
85 :
86 : // dispatch to underlying subsetters
87 0 : bool bOK = false;
88 :
89 : // TODO: better match available input-type to possible subset-types
90 0 : switch( meInFontType) {
91 : case SFNT_TTF:
92 : case SFNT_CFF:
93 : case ANY_SFNT:
94 0 : bOK = CreateFontSubsetFromSfnt( pOutGlyphWidths);
95 0 : break;
96 : case CFF_FONT:
97 0 : bOK = CreateFontSubsetFromCff( pOutGlyphWidths);
98 0 : break;
99 : case TYPE1_PFA:
100 : case TYPE1_PFB:
101 : case ANY_TYPE1:
102 0 : bOK = CreateFontSubsetFromType1( pOutGlyphWidths);
103 0 : break;
104 : // fall through
105 : case NO_FONT:
106 : // fall through
107 : default:
108 : OSL_FAIL( "unhandled type in CreateFontSubset()");
109 0 : break;
110 : }
111 :
112 0 : return bOK;
113 : }
114 :
115 : // TODO: move function to sft.cxx to replace dummy implementation
116 0 : bool FontSubsetInfo::CreateFontSubsetFromSfnt( sal_Int32* pOutGlyphWidths )
117 : {
118 : // handle SFNT_CFF fonts
119 0 : int nCffLength = 0;
120 0 : const sal_uInt8* pCffBytes = NULL;
121 0 : if( GetSfntTable( mpSftTTFont, O_CFF, &pCffBytes, &nCffLength))
122 : {
123 0 : LoadFont( CFF_FONT, pCffBytes, nCffLength);
124 0 : const bool bOK = CreateFontSubsetFromCff( pOutGlyphWidths);
125 0 : return bOK;
126 : }
127 :
128 : // handle SFNT_TTF fonts
129 : // by forwarding the subset request to AG's sft subsetter
130 : #if 1 // TODO: remove conversion tp 16bit glyphids when sft-subsetter has been updated
131 : sal_uInt16 aShortGlyphIds[256];
132 0 : for( int i = 0; i < mnReqGlyphCount; ++i)
133 0 : aShortGlyphIds[i] = (sal_uInt16)mpReqGlyphIds[i];
134 : // remove const_cast when sft-subsetter is const-correct
135 0 : sal_uInt8* pEncArray = const_cast<sal_uInt8*>( mpReqEncodedIds );
136 : #endif
137 0 : int nSFTErr = vcl::SF_BADARG;
138 0 : if( (mnReqFontTypeMask & TYPE42_FONT) != 0 )
139 : {
140 : nSFTErr = CreateT42FromTTGlyphs( mpSftTTFont, mpOutFile, mpReqFontName,
141 0 : aShortGlyphIds, pEncArray, mnReqGlyphCount );
142 : }
143 0 : else if( (mnReqFontTypeMask & TYPE3_FONT) != 0 )
144 : {
145 : nSFTErr = CreateT3FromTTGlyphs( mpSftTTFont, mpOutFile, mpReqFontName,
146 : aShortGlyphIds, pEncArray, mnReqGlyphCount,
147 0 : 0 /* 0 = horizontal, 1 = vertical */ );
148 : }
149 0 : else if( (mnReqFontTypeMask & SFNT_TTF) != 0 )
150 : {
151 : // TODO: use CreateTTFromTTGlyphs()
152 : // TODO: move functionality from callers here
153 : }
154 :
155 0 : return (nSFTErr != vcl::SF_OK);
156 : }
157 :
158 : // TODO: replace dummy implementation
159 0 : bool FontSubsetInfo::CreateFontSubsetFromType1( sal_Int32* pOutGlyphWidths)
160 : {
161 : (void)pOutGlyphWidths;
162 0 : fprintf(stderr,"CreateFontSubsetFromType1: replace dummy implementation\n");
163 0 : return false;
164 : }
165 :
166 : /* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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