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