Mercurial > otakunoraifu
annotate font/font_layout.cc @ 74:f8751d74918b default tip
Remove “duplicate” functions as they can be remplaced by a nearly-identical existing function.
| author | Emmanuel Gil Peyrot <linkmauve@linkmauve.fr> |
|---|---|
| date | Sat, 02 Apr 2011 19:13:54 +0200 |
| parents | 4416cfac86ae |
| children |
| rev | line source |
|---|---|
| 0 | 1 /* layout2.cc |
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2 * テキストの禁則処理、レイアウトなどを行う |
| 0 | 3 */ |
| 4 /* | |
| 5 * Copyright (c) 2004-2006 Kazunori "jagarl" Ueno | |
| 6 * All rights reserved. | |
| 7 * | |
| 8 * Redistribution and use in source and binary forms, with or without | |
| 9 * modification, are permitted provided that the following conditions | |
| 10 * are met: | |
| 11 * 1. Redistributions of source code must retain the above copyright | |
| 12 * notice, this list of conditions and the following disclaimer. | |
| 13 * 2. Redistributions in binary form must reproduce the above copyright | |
| 14 * notice, this list of conditions and the following disclaimer in the | |
| 15 * documentation and/or other materials provided with the distribution. | |
| 16 * 3. The name of the author may not be used to endorse or promote products | |
| 17 * derived from this software without specific prior written permission. | |
| 18 * | |
| 19 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR | |
| 20 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES | |
| 21 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. | |
| 22 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, | |
| 23 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT | |
| 24 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, | |
| 25 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY | |
| 26 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT | |
| 27 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF | |
| 28 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
| 29 */ | |
| 30 | |
| 52 | 31 #include <vector> |
| 32 #include <map> | |
| 33 #include <iostream> | |
| 0 | 34 |
| 35 using namespace std; | |
| 36 | |
| 52 | 37 #include "font.h" |
| 38 #include "text.h" | |
| 0 | 39 |
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40 const int line_skip = 1; // 行と行の間の間隔 |
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41 const int ruby_textskip = 0; // 文字とルビの間の間隔 |
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42 const int ruby_lineskip = 1; // ルビがあるときに行間に加える値 |
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43 const double ruby_scale = 0.4; // ルビのスケール |
| 0 | 44 |
| 45 class TextGlyphStreamHelper; | |
| 46 | |
| 47 enum KinsokuType { KinsokuHead = 1, KinsokuTail = 2}; | |
| 48 static int kinsoku_table1[] = { | |
| 49 /* 0 1 2 3 4 5 6 7 0 1 2 3 4 5 6 7 */ | |
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50 0,0,2,2,2,2,0,0, /* Ｘ 、。，．・： */ |
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51 0,2,2,0,0,0,0,0, /* ；？！゛゜´｀¨ */ |
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52 0,0,0,0,0,0,0,0, /* ＾￣＿ヽヾゝゞ〃 */ |
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53 0,0,0,0,2,0,0,0, /* 仝々〆〇ー―‐／ */ |
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54 0,2,0,0,2,2,1,2, /* ＼〜‖｜…‥‘’ */ |
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55 1,2,1,2,1,2,1,2, /* “”（）〔〕［］ */ |
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56 1,2,1,2,1,2,1,2, /* ｛｝〈〉《》「」 */ |
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57 1,2,1,2,0,0,0,0, /* 『』【】＋−±× */ |
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58 0,0,0,0,0,0,0,0, /* ÷＝≠＜＞≦≧∞ */ |
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59 0,0,0,0,0,0,0,0, /* ∴♂♀°′″℃￥ */ |
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60 0,0,0,0,0,0,0,0, /* ＄¢£％＃＆＊＠ */ |
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61 0,0,0,0,0,0,0,0, /* §☆★○●◎◇Ｘ */ |
| 0 | 62 0 |
| 63 }; | |
| 64 static int kinsoku_table2[] = { | |
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65 0,2,0,2,0,2,0,2,0,2,0,0,0,0,0,0, /* ぁあぃいぅうぇえぉおかがきぎく */ |
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66 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, /* ぐけげこごさざしじすずせぜそぞた */ |
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67 0,0,0,2,0,0,0,0,0,0,0,0,0,0,0,0, /* だちぢっつづてでとどなにぬねのは */ |
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68 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, /* ばぱひびぴふぶぷへべぺほぼぽまみ */ |
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69 0,0,0,2,0,2,0,2,0,0,0,0,0,0,2,0, /* むめもゃやゅゆょよらりるれろゎわ */ |
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70 0,0,0,0,0,2,2,0,0,0,0,0,0,0,0,0, /* ゐゑをんヴヵヶ */ |
| 0 | 71 0 |
| 72 }; | |
| 73 | |
| 74 inline int Kinsoku(int code) { | |
| 75 if ( (code&0xff80) == 0xa180) return kinsoku_table1[ (code&0xff) - 0xa0]; | |
| 76 if ( (code&0xfe80) == 0xa480) return kinsoku_table2[ (code&0xff) - 0xa0]; /* code = 0xa400 / 0xa500 */ | |
| 77 return 0; | |
| 78 } | |
| 79 | |
| 80 class TextGlyphStreamHelper { | |
| 52 | 81 private: |
| 82 typedef TextStream::Iterator Iterator; | |
| 83 typedef TextGlyphStream::iterator iterator; | |
| 0 | 84 |
| 52 | 85 TextGlyphStream* data; |
| 0 | 86 |
| 52 | 87 // information for rendering |
| 88 unsigned char r, g, b; | |
| 89 XKFont::Face* face; | |
| 90 XKFont::Face* ruby_face; | |
| 91 XKFont::Font* font; | |
| 0 | 92 |
| 52 | 93 public: |
| 94 int min_lineheight; | |
| 95 TextGlyphStreamHelper(XKFont::Font* font); | |
| 96 // helper functions | |
| 97 void Init(TextGlyphStream* data); | |
| 98 Iterator Add(int& x, Iterator begin, Iterator end, int max_x = 0); | |
| 99 Iterator AddRuby(int& x, Iterator begin, Iterator end); | |
| 100 int CharWidth(int code); | |
| 101 void SetGroup(iterator begin, iterator end); | |
| 102 void CalcHeight(int& ascent, int& descent, iterator begin, iterator end); | |
| 103 void AdjustPosition(int xstart_add, int xend_add, int y_add, iterator begin, iterator end); | |
| 0 | 104 }; |
| 105 | |
| 106 TextGlyphStreamHelper::TextGlyphStreamHelper(XKFont::Font* __font) { | |
| 107 font = __font; | |
| 108 face = font->FaceLoad(1.0); | |
| 109 ruby_face = 0; | |
| 110 r = 255; g = 255; b = 255; | |
| 111 min_lineheight = font->vsize; | |
| 112 } | |
| 113 | |
| 114 void TextGlyphStreamHelper::Init(TextGlyphStream* __data) { | |
| 115 r = 255; g = 255; b = 255; | |
| 116 face = font->FaceLoad(1.0); | |
| 117 data = __data; | |
| 118 data->clear(); | |
| 119 data->font = font; | |
| 120 } | |
| 121 | |
| 122 TextGlyphStreamHelper::Iterator | |
| 123 TextGlyphStreamHelper::Add(int& x, TextGlyphStreamHelper::Iterator begin, TextGlyphStreamHelper::Iterator end, int max_x) { | |
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124 /* text を glyph に変換する */ |
| 0 | 125 TextGlyph gl; |
| 126 Iterator it; | |
| 127 gl.x = x; gl.y = 0; gl.r = r; gl.g = g; gl.b = b; gl.flag = TextGlyph::Flag(0); gl.is_rev = false; | |
| 128 for (it = begin; it != end; it++) { | |
| 129 if (it->type != TextElem::glyph) { | |
| 130 if (it->type == TextElem::color) { | |
| 131 gl.r = r = it->impl.Color.r; | |
| 132 gl.g = g = it->impl.Color.g; | |
| 133 gl.b = b = it->impl.Color.b; | |
| 134 } else if (it->type == TextElem::size) { | |
| 50 | 135 delete face; |
| 0 | 136 face = font->FaceLoad(it->impl.Size.scale); |
| 137 } else if (it->type == TextElem::escape) { | |
| 138 x = gl.x; | |
| 139 return it; | |
| 140 } | |
| 141 continue; | |
| 142 } | |
| 143 try { | |
| 144 gl.glyph = face->GlyphLoad(it->impl.Glyph.code); | |
| 145 if (max_x > 0 && gl.x + gl.glyph->advance.x > max_x) { | |
| 146 x = gl.x; | |
| 147 return it; | |
| 148 } | |
| 149 if ( Kinsoku(it->impl.Glyph.code) == KinsokuTail) | |
| 150 gl.flag = TextGlyph::Flag(gl.flag | TextGlyph::Kinsoku); | |
| 151 else | |
| 152 gl.flag = TextGlyph::Flag(0); | |
| 153 data->push_back(gl); | |
| 154 gl.x += gl.glyph->advance.x; | |
| 155 } catch(...) {} | |
| 156 } | |
| 157 x = gl.x; | |
| 158 return it; | |
| 159 } | |
| 160 | |
| 161 TextGlyphStreamHelper::Iterator TextGlyphStreamHelper::AddRuby(int& x, TextGlyphStreamHelper::Iterator sbegin, TextGlyphStreamHelper::Iterator send) { | |
| 162 Iterator it; | |
| 163 it = sbegin; | |
| 164 if (it == send) return it; | |
| 165 if (it->type != TextElem::escape || it->impl.Escape.type != TextElem::ruby_start) return sbegin; | |
| 166 it++; | |
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167 /* まず、本文描画 */ |
| 0 | 168 int str_firstpos = data->size(); |
| 169 int str_width = 0; | |
| 170 it = Add(str_width, it, send); | |
| 171 if (it == send || it->type != TextElem::escape || it->impl.Escape.type != TextElem::ruby_startruby) { | |
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172 // ありえないはずだが、取り合えずなにもしないで終了 |
| 0 | 173 cerr << "TextGlyphStream::AddRuby : invalid operation; fallback to the upeer level"<<endl; |
| 174 data->erase(data->begin()+str_firstpos, data->end()); | |
| 175 return sbegin+1; | |
| 176 } | |
| 177 it++; | |
| 178 int str_lastpos = data->size()-1; | |
| 179 TextGlyph& str_first = data->begin()[str_firstpos]; | |
| 180 TextGlyph& str_last = data->back(); | |
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181 // 次に、フォントを取りかえてルビ描画 |
| 0 | 182 int ruby_firstpos = data->size(); |
| 183 XKFont::Face* save_font = face; | |
| 184 if (ruby_face == 0) ruby_face = font->FaceLoad(ruby_scale); | |
| 185 face = ruby_face; | |
| 186 int ruby_width = 0; | |
| 187 it = Add(ruby_width, it, send); | |
| 188 if (it->type != TextElem::escape || it->impl.Escape.type != TextElem::ruby_end) { | |
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189 /* ありえないはずだが、取り合えずなにもしないで終了 */ |
| 0 | 190 cerr << "TextGlyphStream::AddRuby : invalid operation; fallback to the upeer level"<<endl; |
| 191 data->erase(data->begin()+str_firstpos, data->end()); | |
| 192 return sbegin+1; | |
| 193 } | |
| 194 it++; | |
| 195 face = save_font; | |
| 196 TextGlyph& ruby_first = (*data)[ruby_firstpos]; | |
| 197 TextGlyph& ruby_last = data->back(); | |
| 198 | |
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199 /* ルビを移動すべき高さを求める */ |
| 0 | 200 int dummy, str_ascent, ruby_descent; |
| 201 CalcHeight(str_ascent, dummy, data->begin()+str_firstpos, data->begin()+ruby_firstpos); | |
| 202 CalcHeight(dummy, ruby_descent, data->begin()+ruby_firstpos, data->end()); | |
| 203 int ruby_height = str_ascent + ruby_descent + ruby_textskip; | |
| 204 | |
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205 /* センタリングした場合の、ルビの左側、右側のマージン */ |
| 0 | 206 int leftmergin, rightmergin; |
| 207 leftmergin = str_first.glyph->advance.x/2 - (ruby_first.glyph->advance.x+1)/2; | |
| 208 rightmergin = str_last.glyph->advance.x/2 - (ruby_last.glyph->advance.x+1)/2; | |
| 209 | |
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210 /* ルビ、本文の横方向の移動 */ |
| 0 | 211 int ruby_xstart_add = 0, ruby_xend_add = 0, str_xstart_add=0, str_xend_add = 0; |
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212 if (ruby_width+leftmergin+rightmergin <= str_width) { // ルビの方が小さい |
| 0 | 213 ruby_xstart_add = leftmergin; |
| 214 ruby_xend_add = str_width-rightmergin-ruby_width; | |
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215 } else if (ruby_width <= str_width) { // マージンを減らす必要あり |
| 0 | 216 leftmergin = (str_width-ruby_width)/2; |
| 217 ruby_xstart_add = leftmergin; | |
| 218 ruby_xend_add = str_width-leftmergin-ruby_width; | |
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219 } else { // ルビの方が大きい |
| 0 | 220 int str_count = ruby_firstpos - str_firstpos; |
| 221 str_xstart_add = ruby_width/str_count/2 - str_first.glyph->advance.x/2; | |
| 222 str_xend_add = (ruby_width-str_width) - (ruby_width/str_count/2-str_last.glyph->advance.x/2); | |
| 223 str_width = ruby_width; | |
| 224 } | |
| 225 AdjustPosition(str_xstart_add+x, str_xend_add+x, 0, data->begin()+str_firstpos, data->begin()+ruby_firstpos); | |
| 226 AdjustPosition(ruby_xstart_add+x, ruby_xend_add+x, -ruby_height, data->begin()+ruby_firstpos, data->end()); | |
| 227 | |
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228 /* 本文が一文字ずつ表示されるように glyph の順番を入れかえ、グループ化 */ |
| 0 | 229 vector<TextGlyph> save; |
| 230 save.assign(data->begin()+str_firstpos, data->end()); | |
| 231 iterator it_str = save.begin(); | |
| 232 iterator it_ruby = save.begin()+(ruby_firstpos-str_firstpos); | |
| 233 iterator dit = data->begin()+str_firstpos; | |
| 234 int str_count = it_ruby-it_str; | |
| 235 int ruby_count = save.end()-it_ruby; | |
| 236 int i,j = 0; | |
| 237 for (i=0; i<str_count; i++) { | |
| 238 iterator charstart = dit; | |
| 239 int jend = (i+1)*ruby_count/str_count; | |
| 240 for (; j<jend; j++) { | |
| 241 *dit++ = *it_ruby++; | |
| 242 } | |
| 243 *dit++ = *it_str++; | |
| 244 SetGroup(charstart, dit); | |
| 245 } | |
| 246 x += str_width; | |
| 247 return it; | |
| 248 } | |
| 249 | |
| 250 | |
| 251 void TextGlyphStreamHelper::SetGroup(TextGlyphStreamHelper::iterator begin, TextGlyphStreamHelper::iterator end) { | |
| 252 iterator it; | |
| 253 for (it = begin; it+1 != end; it++) | |
| 254 it->flag = TextGlyph::Flag(it->flag |TextGlyph::Group); | |
| 255 it->flag = TextGlyph::Flag(it->flag & ~TextGlyph::Group); | |
| 256 return; | |
| 257 } | |
| 258 | |
| 259 void TextGlyphStreamHelper::AdjustPosition(int xstart_add, int xend_add, int y_add, TextGlyphStreamHelper::iterator begin, TextGlyphStreamHelper::iterator end) { | |
| 260 iterator it; | |
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261 /* 文字数を数える */ |
| 0 | 262 int total_count = 0; |
| 263 for (it = begin; it != end; it++) { | |
| 264 if (it->flag & TextGlyph::Group) continue; | |
| 265 total_count++; | |
| 266 } | |
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267 /* 文字間のギャップを変更 */ |
| 0 | 268 int incr = 0; |
| 269 if (total_count != 1) incr = (xend_add - xstart_add) * 256 / (total_count-1); | |
| 270 int cur = xstart_add * 256; | |
| 271 for (it = begin; it != end; it++) { | |
| 272 it->x += cur / 256; | |
| 273 it->y += y_add; | |
| 274 if (it->flag & TextGlyph::Group) continue; | |
| 275 cur += incr; | |
| 276 } | |
| 277 return; | |
| 278 } | |
| 279 void TextGlyphStreamHelper::CalcHeight(int& ascent_r, int& descent_r, TextGlyphStreamHelper::iterator begin, TextGlyphStreamHelper::iterator end) { | |
| 280 iterator it; | |
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281 /* 最大の descent, ascent を計算 */ |
| 0 | 282 int ascent = 0; |
| 283 int descent = 0; | |
| 284 for (it = begin; it != end; it++) { | |
| 285 | |
| 286 int y_top = it->y - it->glyph->bitmap_top; | |
| 287 int y_bottom = it->y + it->glyph->bitmap.rows - it->glyph->bitmap_top; | |
| 288 | |
| 289 if (descent < y_bottom) descent = y_bottom; | |
| 290 if (ascent < -y_top) ascent = -y_top; | |
| 291 } | |
| 292 ascent_r = ascent; | |
| 293 descent_r = descent; | |
| 294 return; | |
| 295 } | |
| 296 | |
| 297 int TextGlyphStreamHelper::CharWidth(int code) { | |
| 298 try { | |
| 299 XKFont::Glyph* g = face->GlyphLoad(code); | |
| 300 return g->advance.x; | |
| 301 } catch(...) { | |
| 302 return 0; | |
| 303 } | |
| 304 } | |
| 305 | |
| 306 class TextHorizLayout { | |
| 307 typedef TextStream::Iterator Iterator; | |
| 308 | |
| 309 Iterator pos; | |
| 310 Iterator end; | |
| 311 TextGlyphStream* data; | |
| 312 TextGlyphStreamHelper helper; | |
| 313 int tab_width; | |
| 314 int cur_y; | |
| 315 | |
| 316 void SetName(void); | |
| 317 void SetLineHead(void); | |
| 318 void MakeLine(int line_first, int width, vector<int>& lineheights); | |
| 319 public: | |
| 320 TextHorizLayout(XKFont::Font* font); | |
| 321 void Layout(TextStream& stream, TextGlyphStream& glyph, vector<int>& lineheights, int width); | |
| 322 }; | |
| 323 | |
| 324 TextHorizLayout::TextHorizLayout(XKFont::Font* font) : | |
| 325 helper(font), tab_width(0), cur_y(0) { | |
| 326 } | |
| 327 | |
| 328 void TextHorizLayout::Layout(TextStream& stream, TextGlyphStream& glyph, vector<int>& lineheights, int width) { | |
| 329 pos = stream.container.begin(); | |
| 330 end = stream.container.end(); | |
| 331 data = &glyph; | |
| 332 | |
| 333 helper.Init(data); | |
| 334 tab_width = 0; | |
| 335 cur_y = 0; | |
| 336 int prev_y = 0; | |
| 337 int line_start = glyph.size(); | |
| 338 while(pos != end) { | |
| 339 /* | |
| 340 if (pos->type == TextElem::glyph) { int c = pos->impl.Glyph.code; char cc[3]={0,0,0};cc[0]=c>>8;cc[1]=c;cout<<"glyph "<<cc<<endl;} | |
| 341 if (pos->type == TextElem::escape) { cout<<"escape "<<pos->impl.Escape.type<<endl;} | |
| 342 */ | |
| 343 SetName(); | |
| 344 SetLineHead(); | |
| 345 MakeLine(line_start, width, lineheights); | |
| 346 if (line_start != glyph.size()) { | |
| 347 data->back().flag = TextGlyph::Flag(data->back().flag | TextGlyph::PhraseEnd | TextGlyph::LineEnd); | |
| 348 } | |
| 349 prev_y = cur_y; | |
| 350 if (pos != end && pos->type == TextElem::escape && pos->impl.Escape.type == TextElem::ret) pos++; | |
| 351 line_start = glyph.size(); | |
| 352 } | |
| 353 return; | |
| 354 } | |
| 355 | |
| 356 void TextHorizLayout::SetName(void) { | |
| 357 Iterator it; | |
| 358 | |
| 359 tab_width = 0; | |
|
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360 /* 行頭が名前なら、処理開始 */ |
| 0 | 361 for (; pos != end; pos++) { |
| 362 if (pos->type == TextElem::escape || pos->type == TextElem::glyph) break; | |
| 363 int x = 0; | |
| 364 helper.Add(x, pos, pos+1); | |
| 365 } | |
| 366 | |
| 367 if (pos->type != TextElem::escape || pos->impl.Escape.type != TextElem::name_start) return; | |
| 368 | |
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369 /* 名前をセットし、行頭の「の分を含めてタブ幅を設定する */ |
| 0 | 370 pos++; |
| 371 for (it = pos; it != end; it++) { | |
| 372 if (it->type == TextElem::escape && it->impl.Escape.type == TextElem::name_end) break; | |
| 373 } | |
| 374 if (it == end) return; | |
| 375 int line_firstpos = data->size(); | |
| 376 pos = helper.Add(tab_width, pos, it); | |
| 377 pos++; | |
| 378 helper.SetGroup(data->begin() + line_firstpos, data->end()); | |
| 379 | |
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380 // 行頭の「分を開ける |
| 0 | 381 try { |
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382 tab_width += helper.CharWidth(0xa1d6); /* 「 */ |
| 0 | 383 } catch(...) {} |
| 384 | |
| 385 return; | |
| 386 }; | |
| 387 | |
| 388 void TextHorizLayout::SetLineHead(void) { | |
| 389 | |
|
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390 /* 行頭は 「などか？ */ |
| 0 | 391 |
| 392 for (; pos != end; pos++) { | |
| 393 if (pos->type == TextElem::escape || pos->type == TextElem::glyph) break; | |
| 394 int x = 0; | |
| 395 helper.Add(x, pos, pos+1); | |
| 396 } | |
| 397 if (pos->type != TextElem::glyph || Kinsoku(pos->impl.Glyph.code) != KinsokuHead) return; | |
| 398 | |
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399 /* 「なので、処理する */ |
| 0 | 400 if (tab_width != 0) tab_width -= helper.CharWidth(pos->impl.Glyph.code); |
| 401 int line_firstpos = data->size(); | |
| 402 pos = helper.Add(tab_width, pos, pos+1); | |
| 403 return; | |
| 404 } | |
| 405 | |
| 406 void TextHorizLayout::MakeLine(int line_start, int width, vector<int>& lineheights) { | |
| 407 | |
| 408 int x = tab_width; | |
|
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409 /* まず、全文字描画する */ |
| 0 | 410 while(pos != end) { |
| 411 pos = helper.Add(x, pos, end); | |
| 412 if (pos->type == TextElem::escape && pos->impl.Escape.type == TextElem::ruby_start) { | |
| 413 pos = helper.AddRuby(x, pos, end); | |
| 414 } | |
| 415 if (pos != end && pos->type == TextElem::escape) { | |
| 416 if (pos->impl.Escape.type == TextElem::ret) break; | |
| 417 if (pos->impl.Escape.type != TextElem::ruby_start) pos++; | |
| 418 } | |
| 419 } | |
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420 /* 行に分割していく */ |
| 0 | 421 TextGlyphStream::iterator it_start = data->begin() + line_start; |
| 422 TextGlyphStream::iterator it_end = data->end(); | |
| 423 TextGlyphStream::iterator it = it_start; | |
| 424 | |
| 425 TextGlyphStream::iterator group_head = it_start; | |
| 426 int xstart = tab_width; | |
| 427 int xend = width; | |
| 428 while(it != it_end) { | |
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429 // この行の終わりを決める |
| 0 | 430 bool is_ruby = false; |
| 431 TextGlyphStream::iterator it_line_start = it; | |
| 432 for (; it != it_end; it++) { | |
| 433 if (it->x + it->glyph->advance.x > xend) break; | |
| 434 if (it->flag & TextGlyph::Group) is_ruby = true; | |
| 435 if (!(it->flag & TextGlyph::Group)) group_head = it; | |
| 436 } | |
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437 // 水平移動の大きさを決める。デフォルトでタブ位置まで戻す |
| 0 | 438 int xadd_start = -xstart + tab_width; |
| 439 int xadd_end = xadd_start; | |
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440 // it == 次行の先頭なので、今行の末尾へ戻す |
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441 // ただし、 最低一文字の表示は保証 |
| 0 | 442 if (it != it_line_start && it != it_line_start+1 && it != it_end) it--; |
| 443 if (it != it_end) { | |
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444 // グループ化されている文字で終了したら、前の文字に戻す |
| 0 | 445 if (it->flag & TextGlyph::Group) it = group_head; |
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446 // 次が行頭禁則文字ならこの行に入れる |
| 0 | 447 if ( (it+1) != it_end && (it+1)->flag & TextGlyph::Kinsoku) it++; |
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448 // 移動する大きさを決める |
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449 // 行端ぞろえ、行末文字なら半文字分だけ突き出る |
| 0 | 450 int glyph_xend = it->x + it->glyph->advance.x; |
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451 if (it != it_line_start && (it-1)->flag & TextGlyph::Group) { // グループ化文字の場合、１文字前も見る |
| 0 | 452 if (glyph_xend < (it-1)->x + (it-1)->glyph->advance.x) |
| 453 glyph_xend = (it-1)->x + (it-1)->glyph->advance.x; | |
| 454 } | |
| 455 xadd_end += xend - glyph_xend; | |
| 456 if (it->flag & TextGlyph::Kinsoku) | |
| 457 xadd_end += it->glyph->advance.x / 2; | |
| 458 } | |
| 459 if (it != it_end) { | |
| 460 it->flag = TextGlyph::Flag(it->flag | TextGlyph::LineEnd); | |
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461 it++; // it == 次行の先頭へ |
| 0 | 462 } |
| 463 int ascent, descent; | |
| 464 helper.CalcHeight(ascent, descent, it_start, it); | |
| 465 if (ascent+descent < helper.min_lineheight) { | |
| 466 int dif = helper.min_lineheight-(ascent+descent); | |
| 467 ascent += dif/2; | |
| 468 descent += dif-(dif/2); | |
| 469 } | |
| 470 if (is_ruby) ascent+=ruby_lineskip; | |
| 471 helper.AdjustPosition(xadd_start, xadd_end, cur_y+ascent+1, it_start, it); | |
| 472 cur_y += ascent + descent + line_skip; | |
| 473 lineheights.push_back(ascent+descent+line_skip); | |
| 474 | |
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475 /* 次の行へ */ |
| 0 | 476 if (it != it_end) { |
| 477 it_start = it; | |
| 478 group_head = it_start; | |
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479 /* １文字目がグループ化されていれば、グループの先頭文字にする */ |
| 0 | 480 xstart = it->x; |
| 481 if (it->flag & TextGlyph::Group) { | |
| 482 TextGlyphStream::iterator jit; | |
| 483 for (jit = it; jit != it_end; jit++) { | |
| 484 if (xstart > jit->x) xstart = jit->x; | |
| 485 if (!(jit->flag & TextGlyph::Group)) break; | |
| 486 } | |
| 487 } | |
| 488 xend = it->x + width-tab_width; | |
| 489 } | |
| 490 } | |
| 491 return; | |
| 492 } | |
| 493 | |
| 494 namespace XKFont { | |
| 495 | |
| 52 | 496 HorizLayout::HorizLayout(const char* fontname, int size) { |
| 497 font = new Font(fontname, size); | |
| 498 pimpl = new ::TextHorizLayout(font); | |
| 499 } | |
| 0 | 500 |
| 52 | 501 HorizLayout::~HorizLayout() { |
| 502 delete pimpl; | |
| 503 delete font; | |
| 504 } | |
| 0 | 505 |
| 52 | 506 void HorizLayout::Layout(TextStream& stream, TextGlyphStream& glyph, vector<int>& lineheights, int width) { |
| 507 pimpl->Layout(stream, glyph, lineheights, width); | |
| 508 }; | |
| 509 | |
| 510 TextGlyphStream HorizLayout::Layout(const char* str, int width, int r, int gc, int b) { | |
| 511 TextStream s; | |
| 512 s.SetColor(r,gc,b); | |
| 513 s.Add(str); | |
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514 return Layout(s, width); |
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515 } |
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516 |
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517 TextGlyphStream HorizLayout::Layout(TextStream s, int width) { |
| 52 | 518 TextGlyphStream g; |
| 519 vector<int> h; | |
| 520 Layout(s, g, h, width); | |
| 521 return g; | |
| 522 } | |
| 0 | 523 |
| 524 }; | |
| 525 | |
| 526 int TextGlyphStream::width(void) { | |
| 527 if (empty()) return 0; | |
| 528 iterator it; | |
| 529 int xmax = 0; | |
| 530 for (it=begin(); it!=end(); it++) { | |
| 531 int x = it->x + it->glyph->advance.x; | |
| 532 if (x > xmax) xmax = x; | |
| 533 } | |
| 534 return xmax + 1; | |
| 535 } | |
| 536 | |
| 537 int TextGlyphStream::height(void) { | |
| 538 if (empty()) return 0; | |
| 539 iterator it; | |
| 540 int ymax = 0; | |
| 541 it = end(); | |
| 542 while(1) { | |
| 543 it--; | |
| 544 int y = it->y + it->glyph->bitmap.rows - it->glyph->bitmap_top; | |
| 545 if (ymax < y) ymax = y; | |
| 546 if (it == begin()) break; | |
| 547 if (it->flag & TextGlyph::LineEnd) { | |
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548 if (!(it->flag & TextGlyph::PhraseEnd)) break; // PhraseEnd は最後の文字 |
| 0 | 549 } |
| 550 } | |
| 551 return ymax + 1; | |
| 552 } | |
| 553 |