3 * This file is part of LyX, the document processor.
4 * Licence details can be found in the file COPYING.
8 * Full author contact details are available in file CREDITS.
17 #include "lyxrow_funcs.h"
19 #include "paragraph.h"
25 lyx::pos_type Bidi::log2vis(lyx::pos_type pos) const
27 return (start_ == -1) ? pos : log2vis_list_[pos - start_];
31 lyx::pos_type Bidi::vis2log(lyx::pos_type pos) const
33 return (start_ == -1) ? pos : vis2log_list_[pos - start_];
37 lyx::pos_type Bidi::level(lyx::pos_type pos) const
39 return (start_ == -1) ? 0 : levels_[pos - start_];
43 bool Bidi::inRange(lyx::pos_type pos) const
45 return start_ == -1 || (start_ <= pos && pos <= end_);
48 bool Bidi::same_direction() const
50 return same_direction_;
54 void Bidi::computeTables(Paragraph const & par,
55 Buffer const & buf, Row const & row)
57 same_direction_ = true;
58 if (!lyxrc.rtl_support) {
63 if (par.ownerCode() == InsetBase::ERT_CODE) {
69 end_ = row.endpos() - 1;
76 if (end_ + 2 - start_ >
77 static_cast<pos_type>(log2vis_list_.size())) {
79 (end_ + 2 - start_ < 500) ?
80 500 : 2 * (end_ + 2 - start_);
81 log2vis_list_.resize(new_size);
82 vis2log_list_.resize(new_size);
83 levels_.resize(new_size);
86 vis2log_list_[end_ + 1 - start_] = -1;
87 log2vis_list_[end_ + 1 - start_] = -1;
89 BufferParams const & bufparams = buf.params();
91 bool const rtl_par = par.isRightToLeftPar(bufparams);
95 pos_type const body_pos = par.beginOfBody();
97 for (pos_type lpos = start_; lpos <= end_; ++lpos) {
98 bool is_space = par.isLineSeparator(lpos);
100 (is_space && lpos + 1 <= end_ &&
101 !par.isLineSeparator(lpos + 1) &&
102 !par.isNewline(lpos + 1))
104 LyXFont font = par.getFontSettings(bufparams, pos);
105 if (pos != lpos && 0 < lpos && rtl0 && font.isRightToLeft() &&
106 font.number() == LyXFont::ON &&
107 par.getFontSettings(bufparams, lpos - 1).number()
109 font = par.getFontSettings(bufparams, lpos);
113 bool new_rtl = font.isVisibleRightToLeft();
114 bool new_rtl0 = font.isRightToLeft();
117 if (lpos == body_pos - 1
118 && row.pos() < body_pos - 1
120 new_level = rtl_par ? 1 : 0;
124 new_level = new_rtl ? 1 : 2;
126 new_level = rtl_par ? 2 : 0;
128 if (is_space && new_level >= lev) {
134 int new_level2 = new_level;
136 if (lev == new_level && rtl0 != new_rtl0) {
138 log2vis_list_[lpos - start_] = rtl ? 1 : -1;
139 } else if (lev < new_level) {
140 log2vis_list_[lpos - start_] = rtl ? -1 : 1;
141 if (new_level > 0 && !rtl_par)
142 same_direction_ = false;
144 log2vis_list_[lpos - start_] = new_rtl ? -1 : 1;
147 levels_[lpos - start_] = new_level;
149 while (lev > new_level2) {
150 pos_type old_lpos = stack[--lev];
151 int delta = lpos - old_lpos - 1;
154 log2vis_list_[lpos - start_] += delta;
155 log2vis_list_[old_lpos - start_] += delta;
157 while (lev < new_level)
162 pos_type const old_lpos = stack[--lev];
163 int delta = end_ - old_lpos;
166 log2vis_list_[old_lpos - start_] += delta;
169 pos_type vpos = start_ - 1;
170 for (pos_type lpos = start_; lpos <= end_; ++lpos) {
171 vpos += log2vis_list_[lpos - start_];
172 vis2log_list_[vpos - start_] = lpos;
173 log2vis_list_[lpos - start_] = vpos;
178 // This method requires a previous call to computeTables()
179 bool Bidi::isBoundary(Buffer const & buf, Paragraph const & par,
182 if (!lyxrc.rtl_support || pos == 0)
185 if (!inRange(pos - 1)) {
186 // This can happen if pos is the first char of a row.
187 // Returning false in this case is incorrect!
191 bool const rtl = level(pos - 1) % 2;
192 bool const rtl2 = inRange(pos)
194 : par.isRightToLeftPar(buf.params());
199 bool Bidi::isBoundary(Buffer const & buf, Paragraph const & par,
200 pos_type pos, LyXFont const & font) const
202 if (!lyxrc.rtl_support)
203 return false; // This is just for speedup
205 bool const rtl = font.isVisibleRightToLeft();
206 bool const rtl2 = inRange(pos)
208 : par.isRightToLeftPar(buf.params());