1*9f62ea84SAndrew Rist /**************************************************************
2cdf0e10cSrcweir *
3*9f62ea84SAndrew Rist * Licensed to the Apache Software Foundation (ASF) under one
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7*9f62ea84SAndrew Rist * to you under the Apache License, Version 2.0 (the
8*9f62ea84SAndrew Rist * "License"); you may not use this file except in compliance
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10*9f62ea84SAndrew Rist *
11*9f62ea84SAndrew Rist * http://www.apache.org/licenses/LICENSE-2.0
12*9f62ea84SAndrew Rist *
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21*9f62ea84SAndrew Rist
22*9f62ea84SAndrew Rist
23cdf0e10cSrcweir
24cdf0e10cSrcweir // MARKER(update_precomp.py): autogen include statement, do not remove
25cdf0e10cSrcweir #include "precompiled_vcl.hxx"
26cdf0e10cSrcweir
27cdf0e10cSrcweir // We need this to enable namespace support in libgrengine headers.
28cdf0e10cSrcweir #define GR_NAMESPACE
29cdf0e10cSrcweir
30cdf0e10cSrcweir // Header files
31cdf0e10cSrcweir //
32cdf0e10cSrcweir // Standard Library
33cdf0e10cSrcweir #include <string>
34cdf0e10cSrcweir #include <cassert>
35cdf0e10cSrcweir #include "graphite_textsrc.hxx"
36cdf0e10cSrcweir #include <graphite_features.hxx>
37cdf0e10cSrcweir
38cdf0e10cSrcweir // class TextSourceAdaptor implementation.
39cdf0e10cSrcweir //
~TextSourceAdaptor()40cdf0e10cSrcweir TextSourceAdaptor::~TextSourceAdaptor()
41cdf0e10cSrcweir {
42cdf0e10cSrcweir delete mpFeatures;
43cdf0e10cSrcweir }
44cdf0e10cSrcweir
utfEncodingForm()45cdf0e10cSrcweir gr::UtfType TextSourceAdaptor::utfEncodingForm() {
46cdf0e10cSrcweir return gr::kutf16;
47cdf0e10cSrcweir }
48cdf0e10cSrcweir
49cdf0e10cSrcweir
getLength()50cdf0e10cSrcweir size_t TextSourceAdaptor::getLength()
51cdf0e10cSrcweir {
52cdf0e10cSrcweir return maLayoutArgs.mnLength;
53cdf0e10cSrcweir }
54cdf0e10cSrcweir
55cdf0e10cSrcweir
fetch(gr::toffset,size_t,gr::utf32 *)56cdf0e10cSrcweir size_t TextSourceAdaptor::fetch(gr::toffset, size_t, gr::utf32 *)
57cdf0e10cSrcweir {
58cdf0e10cSrcweir assert(false);
59cdf0e10cSrcweir return 0;
60cdf0e10cSrcweir }
61cdf0e10cSrcweir
62cdf0e10cSrcweir
fetch(gr::toffset offset,size_t char_count,gr::utf16 * char_buffer)63cdf0e10cSrcweir size_t TextSourceAdaptor::fetch(gr::toffset offset, size_t char_count, gr::utf16 * char_buffer)
64cdf0e10cSrcweir {
65cdf0e10cSrcweir assert(char_buffer);
66cdf0e10cSrcweir
67cdf0e10cSrcweir size_t copy_count = std::min(size_t(maLayoutArgs.mnLength), char_count);
68cdf0e10cSrcweir std::copy(maLayoutArgs.mpStr + offset, maLayoutArgs.mpStr + offset + copy_count, char_buffer);
69cdf0e10cSrcweir
70cdf0e10cSrcweir return copy_count;
71cdf0e10cSrcweir }
72cdf0e10cSrcweir
73cdf0e10cSrcweir
fetch(gr::toffset,size_t,gr::utf8 *)74cdf0e10cSrcweir size_t TextSourceAdaptor::fetch(gr::toffset, size_t, gr::utf8 *)
75cdf0e10cSrcweir {
76cdf0e10cSrcweir assert(false);
77cdf0e10cSrcweir return 0;
78cdf0e10cSrcweir }
79cdf0e10cSrcweir
80cdf0e10cSrcweir
getCharProperties(const int nCharIdx,int & min,int & lim,size_t & depth)81cdf0e10cSrcweir inline void TextSourceAdaptor::getCharProperties(const int nCharIdx, int & min, int & lim, size_t & depth)
82cdf0e10cSrcweir {
83cdf0e10cSrcweir maLayoutArgs.ResetPos();
84cdf0e10cSrcweir bool rtl = maLayoutArgs.mnFlags & SAL_LAYOUT_BIDI_RTL;
85cdf0e10cSrcweir for(depth = ((rtl)? 1:0); maLayoutArgs.maRuns.GetRun(&min, &lim, &rtl); maLayoutArgs.maRuns.NextRun())
86cdf0e10cSrcweir {
87cdf0e10cSrcweir if (min > nCharIdx)
88cdf0e10cSrcweir break;
89cdf0e10cSrcweir // Only increase the depth when a change of direction occurs.
90cdf0e10cSrcweir depth += int(rtl ^ bool(depth & 0x1));
91cdf0e10cSrcweir if (min <= nCharIdx && nCharIdx < lim)
92cdf0e10cSrcweir break;
93cdf0e10cSrcweir }
94cdf0e10cSrcweir // If there is no run for this position increment the depth, but don't
95cdf0e10cSrcweir // change if this is out of bounds context
96cdf0e10cSrcweir if (lim > 0 && nCharIdx >= lim && nCharIdx < maLayoutArgs.mnEndCharPos)
97cdf0e10cSrcweir depth++;
98cdf0e10cSrcweir }
99cdf0e10cSrcweir
100cdf0e10cSrcweir
getRightToLeft(gr::toffset nCharIdx)101cdf0e10cSrcweir bool TextSourceAdaptor::getRightToLeft(gr::toffset nCharIdx)
102cdf0e10cSrcweir {
103cdf0e10cSrcweir size_t depth;
104cdf0e10cSrcweir int min, lim = 0;
105cdf0e10cSrcweir getCharProperties(nCharIdx, min, lim, depth);
106cdf0e10cSrcweir //printf("getRtl %d,%x=%d\n", nCharIdx, maLayoutArgs.mpStr[nCharIdx], depth & 0x1);
107cdf0e10cSrcweir return depth & 0x1;
108cdf0e10cSrcweir }
109cdf0e10cSrcweir
110cdf0e10cSrcweir
getDirectionDepth(gr::toffset nCharIdx)111cdf0e10cSrcweir unsigned int TextSourceAdaptor::getDirectionDepth(gr::toffset nCharIdx)
112cdf0e10cSrcweir {
113cdf0e10cSrcweir size_t depth;
114cdf0e10cSrcweir int min, lim;
115cdf0e10cSrcweir getCharProperties(nCharIdx, min, lim, depth);
116cdf0e10cSrcweir //printf("getDirectionDepth %d,%x=%d\n", nCharIdx, maLayoutArgs.mpStr[nCharIdx], depth);
117cdf0e10cSrcweir return depth;
118cdf0e10cSrcweir }
119cdf0e10cSrcweir
120cdf0e10cSrcweir
getVerticalOffset(gr::toffset)121cdf0e10cSrcweir float TextSourceAdaptor::getVerticalOffset(gr::toffset)
122cdf0e10cSrcweir {
123cdf0e10cSrcweir return 0.0f; //TODO: Implement correctly
124cdf0e10cSrcweir }
125cdf0e10cSrcweir
getLanguage(gr::toffset)126cdf0e10cSrcweir gr::isocode TextSourceAdaptor::getLanguage(gr::toffset)
127cdf0e10cSrcweir {
128cdf0e10cSrcweir if (mpFeatures && mpFeatures->hasLanguage())
129cdf0e10cSrcweir return mpFeatures->getLanguage();
130cdf0e10cSrcweir gr::isocode unknown = {{0,0,0,0}};
131cdf0e10cSrcweir return unknown;
132cdf0e10cSrcweir }
133cdf0e10cSrcweir
propertyRange(gr::toffset nCharIdx)134cdf0e10cSrcweir ext_std::pair<gr::toffset, gr::toffset> TextSourceAdaptor::propertyRange(gr::toffset nCharIdx)
135cdf0e10cSrcweir {
136cdf0e10cSrcweir
137cdf0e10cSrcweir if (nCharIdx < unsigned(maLayoutArgs.mnMinCharPos))
138cdf0e10cSrcweir return ext_std::make_pair(0, maLayoutArgs.mnMinCharPos);
139cdf0e10cSrcweir
140cdf0e10cSrcweir if (nCharIdx < mnEnd)
141cdf0e10cSrcweir return ext_std::make_pair(maLayoutArgs.mnMinCharPos, mnEnd);
142cdf0e10cSrcweir
143cdf0e10cSrcweir return ext_std::make_pair(mnEnd, maLayoutArgs.mnLength);
144cdf0e10cSrcweir }
145cdf0e10cSrcweir
getFontFeatures(gr::toffset,gr::FeatureSetting * settings)146cdf0e10cSrcweir size_t TextSourceAdaptor::getFontFeatures(gr::toffset, gr::FeatureSetting * settings)
147cdf0e10cSrcweir {
148cdf0e10cSrcweir if (mpFeatures) return mpFeatures->getFontFeatures(settings);
149cdf0e10cSrcweir return 0;
150cdf0e10cSrcweir }
151cdf0e10cSrcweir
152cdf0e10cSrcweir
sameSegment(gr::toffset char_idx1,gr::toffset char_idx2)153cdf0e10cSrcweir bool TextSourceAdaptor::sameSegment(gr::toffset char_idx1, gr::toffset char_idx2)
154cdf0e10cSrcweir {
155cdf0e10cSrcweir const ext_std::pair<gr::toffset, gr::toffset>
156cdf0e10cSrcweir range1 = propertyRange(char_idx1),
157cdf0e10cSrcweir range2 = propertyRange(char_idx2);
158cdf0e10cSrcweir
159cdf0e10cSrcweir return range1 == range2;
160cdf0e10cSrcweir }
161cdf0e10cSrcweir
setFeatures(const grutils::GrFeatureParser * pFeatures)162cdf0e10cSrcweir void TextSourceAdaptor::setFeatures(const grutils::GrFeatureParser * pFeatures)
163cdf0e10cSrcweir {
164cdf0e10cSrcweir mpFeatures = new grutils::GrFeatureParser(*pFeatures);
165cdf0e10cSrcweir }
166