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1 /* layout2.cc
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2 * ¥Æ¥¥¹¥È¤Î¶Ø§½èÍý¡¢¥ì¥¤¥¢¥¦¥È¤Ê¤É¤ò¹Ô¤¦
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3 */
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4 /*
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5 * Copyright (c) 2004-2006 Kazunori "jagarl" Ueno
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6 * All rights reserved.
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7 *
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8 * Redistribution and use in source and binary forms, with or without
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9 * modification, are permitted provided that the following conditions
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10 * are met:
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11 * 1. Redistributions of source code must retain the above copyright
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12 * notice, this list of conditions and the following disclaimer.
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13 * 2. Redistributions in binary form must reproduce the above copyright
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14 * notice, this list of conditions and the following disclaimer in the
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15 * documentation and/or other materials provided with the distribution.
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16 * 3. The name of the author may not be used to endorse or promote products
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17 * derived from this software without specific prior written permission.
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18 *
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19 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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20 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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21 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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22 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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23 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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24 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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25 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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26 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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27 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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28 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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29 */
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30
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31 #include<vector>
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32 #include<map>
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33 #include<iostream>
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34
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35 using namespace std;
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36
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37 #include"font.h"
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38 #include"text.h"
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39
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40 const int line_skip = 1; // ¹Ô¤È¹Ô¤Î´Ö¤Î´Ö³Ö
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41 const int ruby_textskip = 0; // ʸ»ú¤È¥ë¥Ó¤Î´Ö¤Î´Ö³Ö
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42 const int ruby_lineskip = 1; // ¥ë¥Ó¤¬¤¢¤ë¤È¤¤Ë¹Ô´Ö¤Ë²Ã¤¨¤ëÃÍ
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43 const double ruby_scale = 0.4; // ¥ë¥Ó¤Î¥¹¥±¡¼¥ë
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44
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45 class TextGlyphStreamHelper;
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46
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47 enum KinsokuType { KinsokuHead = 1, KinsokuTail = 2};
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48 static int kinsoku_table1[] = {
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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, /* £Ø¡¡¡¢¡£¡¤¡¥¡¦¡§ */
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51 0,2,2,0,0,0,0,0, /* ¡¨¡©¡ª¡«¡¬¡¡®¡¯ */
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52 0,0,0,0,0,0,0,0, /* ¡°¡±¡²¡³¡´¡µ¡¶¡· */
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53 0,0,0,0,2,0,0,0, /* ¡¸¡¹¡º¡»¡¼¡½¡¾¡¿ */
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54 0,2,0,0,2,2,1,2, /* ¡À¡Á¡Â¡Ã¡Ä¡Å¡Æ¡Ç */
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55 1,2,1,2,1,2,1,2, /* ¡È¡É¡Ê¡Ë¡Ì¡Í¡Î¡Ï */
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56 1,2,1,2,1,2,1,2, /* ¡Ð¡Ñ¡Ò¡Ó¡Ô¡Õ¡Ö¡× */
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57 1,2,1,2,0,0,0,0, /* ¡Ø¡Ù¡Ú¡Û¡Ü¡Ý¡Þ¡ß */
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58 0,0,0,0,0,0,0,0, /* ¡à¡á¡â¡ã¡ä¡å¡æ¡ç */
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59 0,0,0,0,0,0,0,0, /* ¡è¡é¡ê¡ë¡ì¡í¡î¡ï */
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60 0,0,0,0,0,0,0,0, /* ¡ð¡ñ¡ò¡ó¡ô¡õ¡ö¡÷ */
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61 0,0,0,0,0,0,0,0, /* ¡ø¡ù¡ú¡û¡ü¡ý¡þ£Ø */
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62 0
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63 };
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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, /* ¡¡¤¡¤¢¤£¤¤¤¥¤¦¤§¤¨¤©¤ª¤«¤¬¤¤®¤¯ */
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66 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, /* ¤°¤±¤²¤³¤´¤µ¤¶¤·¤¸¤¹¤º¤»¤¼¤½¤¾¤¿ */
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67 0,0,0,2,0,0,0,0,0,0,0,0,0,0,0,0, /* ¤À¤Á¤Â¤Ã¤Ä¤Å¤Æ¤Ç¤È¤É¤Ê¤Ë¤Ì¤Í¤Î¤Ï */
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68 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, /* ¤Ð¤Ñ¤Ò¤Ó¤Ô¤Õ¤Ö¤×¤Ø¤Ù¤Ú¤Û¤Ü¤Ý¤Þ¤ß */
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69 0,0,0,2,0,2,0,2,0,0,0,0,0,0,2,0, /* ¤à¤á¤â¤ã¤ä¤å¤æ¤ç¤è¤é¤ê¤ë¤ì¤í¤î¤ï */
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70 0,0,0,0,0,2,2,0,0,0,0,0,0,0,0,0, /* ¤ð¤ñ¤ò¤ó¥ô¥õ¥ö */
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71 0
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72 };
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73
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74 inline int Kinsoku(int code) {
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75 if ( (code&0xff80) == 0xa180) return kinsoku_table1[ (code&0xff) - 0xa0];
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76 if ( (code&0xfe80) == 0xa480) return kinsoku_table2[ (code&0xff) - 0xa0]; /* code = 0xa400 / 0xa500 */
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77 return 0;
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78 }
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79
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80 class TextGlyphStreamHelper {
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81 typedef TextStream::Iterator Iterator;
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82 typedef TextGlyphStream::iterator iterator;
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83
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84 TextGlyphStream* data;
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85
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86 // information for rendering
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87 unsigned char r, g, b;
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88 XKFont::Face* face;
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89 XKFont::Face* ruby_face;
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90 XKFont::Font* font;
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91
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92 public:
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93 int min_lineheight;
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94 TextGlyphStreamHelper(XKFont::Font* font);
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95 // helper functions
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96 void Init(TextGlyphStream* data);
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97 Iterator Add(int& x, Iterator begin, Iterator end, int max_x = 0);
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98 Iterator AddRuby(int& x, Iterator begin, Iterator end);
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99 int CharWidth(int code);
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100 void SetGroup(iterator begin, iterator end);
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101 void CalcHeight(int& ascent, int& descent, iterator begin, iterator end);
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102 void AdjustPosition(int xstart_add, int xend_add, int y_add, iterator begin, iterator end);
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103 };
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104
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105 TextGlyphStreamHelper::TextGlyphStreamHelper(XKFont::Font* __font) {
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106 font = __font;
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107 face = font->FaceLoad(1.0);
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108 ruby_face = 0;
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109 r = 255; g = 255; b = 255;
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110 min_lineheight = font->vsize;
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111 }
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112
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113 void TextGlyphStreamHelper::Init(TextGlyphStream* __data) {
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114 r = 255; g = 255; b = 255;
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115 face = font->FaceLoad(1.0);
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116 data = __data;
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117 data->clear();
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118 data->font = font;
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119 }
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120
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121 TextGlyphStreamHelper::Iterator
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122 TextGlyphStreamHelper::Add(int& x, TextGlyphStreamHelper::Iterator begin, TextGlyphStreamHelper::Iterator end, int max_x) {
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123 /* text ¤ò glyph ¤ËÊÑ´¹¤¹¤ë */
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124 TextGlyph gl;
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125 Iterator it;
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126 gl.x = x; gl.y = 0; gl.r = r; gl.g = g; gl.b = b; gl.flag = TextGlyph::Flag(0); gl.is_rev = false;
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127 for (it = begin; it != end; it++) {
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128 if (it->type != TextElem::glyph) {
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129 if (it->type == TextElem::color) {
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130 gl.r = r = it->impl.Color.r;
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131 gl.g = g = it->impl.Color.g;
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132 gl.b = b = it->impl.Color.b;
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133 } else if (it->type == TextElem::size) {
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134 face = font->FaceLoad(it->impl.Size.scale);
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135 } else if (it->type == TextElem::escape) {
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136 x = gl.x;
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137 return it;
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138 }
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139 continue;
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140 }
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141 try {
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142 gl.glyph = face->GlyphLoad(it->impl.Glyph.code);
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143 if (max_x > 0 && gl.x + gl.glyph->advance.x > max_x) {
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144 x = gl.x;
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145 return it;
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146 }
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147 if ( Kinsoku(it->impl.Glyph.code) == KinsokuTail)
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148 gl.flag = TextGlyph::Flag(gl.flag | TextGlyph::Kinsoku);
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149 else
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150 gl.flag = TextGlyph::Flag(0);
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151 data->push_back(gl);
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152 gl.x += gl.glyph->advance.x;
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153 } catch(...) {}
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154 }
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155 x = gl.x;
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156 return it;
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157 }
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158
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159 TextGlyphStreamHelper::Iterator TextGlyphStreamHelper::AddRuby(int& x, TextGlyphStreamHelper::Iterator sbegin, TextGlyphStreamHelper::Iterator send) {
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160 Iterator it;
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161 it = sbegin;
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162 if (it == send) return it;
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163 if (it->type != TextElem::escape || it->impl.Escape.type != TextElem::ruby_start) return sbegin;
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164 it++;
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165 /* ¤Þ¤º¡¢ËÜʸÉÁ²è */
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166 int str_firstpos = data->size();
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167 int str_width = 0;
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168 it = Add(str_width, it, send);
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169 if (it == send || it->type != TextElem::escape || it->impl.Escape.type != TextElem::ruby_startruby) {
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170 // ¤¢¤ê¤¨¤Ê¤¤¤Ï¤º¤À¤¬¡¢¼è¤ê¹ç¤¨¤º¤Ê¤Ë¤â¤·¤Ê¤¤¤Ç½ªÎ»
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171 cerr << "TextGlyphStream::AddRuby : invalid operation; fallback to the upeer level"<<endl;
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172 data->erase(data->begin()+str_firstpos, data->end());
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173 return sbegin+1;
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174 }
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175 it++;
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176 int str_lastpos = data->size()-1;
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177 TextGlyph& str_first = data->begin()[str_firstpos];
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178 TextGlyph& str_last = data->back();
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179 // ¼¡¤Ë¡¢¥Õ¥©¥ó¥È¤ò¼è¤ê¤«¤¨¤Æ¥ë¥ÓÉÁ²è
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180 int ruby_firstpos = data->size();
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181 XKFont::Face* save_font = face;
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182 if (ruby_face == 0) ruby_face = font->FaceLoad(ruby_scale);
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183 face = ruby_face;
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184 int ruby_width = 0;
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185 it = Add(ruby_width, it, send);
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186 if (it->type != TextElem::escape || it->impl.Escape.type != TextElem::ruby_end) {
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187 /* ¤¢¤ê¤¨¤Ê¤¤¤Ï¤º¤À¤¬¡¢¼è¤ê¹ç¤¨¤º¤Ê¤Ë¤â¤·¤Ê¤¤¤Ç½ªÎ» */
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188 cerr << "TextGlyphStream::AddRuby : invalid operation; fallback to the upeer level"<<endl;
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189 data->erase(data->begin()+str_firstpos, data->end());
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190 return sbegin+1;
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191 }
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192 it++;
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193 face = save_font;
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194 TextGlyph& ruby_first = (*data)[ruby_firstpos];
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195 TextGlyph& ruby_last = data->back();
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196
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197 /* ¥ë¥Ó¤ò°ÜÆ°¤¹¤Ù¤¹â¤µ¤òµá¤á¤ë */
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198 int dummy, str_ascent, ruby_descent;
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199 CalcHeight(str_ascent, dummy, data->begin()+str_firstpos, data->begin()+ruby_firstpos);
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200 CalcHeight(dummy, ruby_descent, data->begin()+ruby_firstpos, data->end());
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201 int ruby_height = str_ascent + ruby_descent + ruby_textskip;
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202
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203 /* ¥»¥ó¥¿¥ê¥ó¥°¤·¤¿¾ì¹ç¤Î¡¢¥ë¥Ó¤Îº¸Â¦¡¢±¦Â¦¤Î¥Þ¡¼¥¸¥ó */
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204 int leftmergin, rightmergin;
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205 leftmergin = str_first.glyph->advance.x/2 - (ruby_first.glyph->advance.x+1)/2;
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206 rightmergin = str_last.glyph->advance.x/2 - (ruby_last.glyph->advance.x+1)/2;
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207
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208 /* ¥ë¥Ó¡¢ËÜʸ¤Î²£Êý¸þ¤Î°ÜÆ° */
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209 int ruby_xstart_add = 0, ruby_xend_add = 0, str_xstart_add=0, str_xend_add = 0;
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210 if (ruby_width+leftmergin+rightmergin <= str_width) { // ¥ë¥Ó¤ÎÊý¤¬¾®¤µ¤¤
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211 ruby_xstart_add = leftmergin;
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212 ruby_xend_add = str_width-rightmergin-ruby_width;
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213 } else if (ruby_width <= str_width) { // ¥Þ¡¼¥¸¥ó¤ò¸º¤é¤¹É¬Íפ¢¤ê
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214 leftmergin = (str_width-ruby_width)/2;
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215 ruby_xstart_add = leftmergin;
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216 ruby_xend_add = str_width-leftmergin-ruby_width;
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217 } else { // ¥ë¥Ó¤ÎÊý¤¬Â礤¤
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218 int str_count = ruby_firstpos - str_firstpos;
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219 str_xstart_add = ruby_width/str_count/2 - str_first.glyph->advance.x/2;
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220 str_xend_add = (ruby_width-str_width) - (ruby_width/str_count/2-str_last.glyph->advance.x/2);
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221 str_width = ruby_width;
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222 }
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223 AdjustPosition(str_xstart_add+x, str_xend_add+x, 0, data->begin()+str_firstpos, data->begin()+ruby_firstpos);
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224 AdjustPosition(ruby_xstart_add+x, ruby_xend_add+x, -ruby_height, data->begin()+ruby_firstpos, data->end());
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225
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226 /* ËÜʸ¤¬°ìʸ»ú¤º¤Äɽ¼¨¤µ¤ì¤ë¤è¤¦¤Ë glyph ¤Î½çÈÖ¤òÆþ¤ì¤«¤¨¡¢¥°¥ë¡¼¥×²½ */
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227 vector<TextGlyph> save;
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228 save.assign(data->begin()+str_firstpos, data->end());
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229 iterator it_str = save.begin();
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230 iterator it_ruby = save.begin()+(ruby_firstpos-str_firstpos);
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231 iterator dit = data->begin()+str_firstpos;
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232 int str_count = it_ruby-it_str;
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233 int ruby_count = save.end()-it_ruby;
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234 int i,j = 0;
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235 for (i=0; i<str_count; i++) {
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236 iterator charstart = dit;
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237 int jend = (i+1)*ruby_count/str_count;
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238 for (; j<jend; j++) {
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239 *dit++ = *it_ruby++;
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240 }
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241 *dit++ = *it_str++;
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242 SetGroup(charstart, dit);
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243 }
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244 x += str_width;
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245 return it;
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246 }
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247
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248
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249 void TextGlyphStreamHelper::SetGroup(TextGlyphStreamHelper::iterator begin, TextGlyphStreamHelper::iterator end) {
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250 iterator it;
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251 for (it = begin; it+1 != end; it++)
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252 it->flag = TextGlyph::Flag(it->flag |TextGlyph::Group);
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253 it->flag = TextGlyph::Flag(it->flag & ~TextGlyph::Group);
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254 return;
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255 }
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256
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257 void TextGlyphStreamHelper::AdjustPosition(int xstart_add, int xend_add, int y_add, TextGlyphStreamHelper::iterator begin, TextGlyphStreamHelper::iterator end) {
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258 iterator it;
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259 /* ʸ»ú¿ô¤ò¿ô¤¨¤ë */
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260 int total_count = 0;
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261 for (it = begin; it != end; it++) {
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262 if (it->flag & TextGlyph::Group) continue;
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263 total_count++;
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264 }
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265 /* ʸ»ú´Ö¤Î¥®¥ã¥Ã¥×¤òÊѹ¹ */
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266 int incr = 0;
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267 if (total_count != 1) incr = (xend_add - xstart_add) * 256 / (total_count-1);
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268 int cur = xstart_add * 256;
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269 for (it = begin; it != end; it++) {
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270 it->x += cur / 256;
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271 it->y += y_add;
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272 if (it->flag & TextGlyph::Group) continue;
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273 cur += incr;
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274 }
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275 return;
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276 }
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277 void TextGlyphStreamHelper::CalcHeight(int& ascent_r, int& descent_r, TextGlyphStreamHelper::iterator begin, TextGlyphStreamHelper::iterator end) {
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278 iterator it;
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279 /* ºÇÂç¤Î descent, ascent ¤ò·×»» */
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280 int ascent = 0;
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281 int descent = 0;
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282 for (it = begin; it != end; it++) {
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283
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284 int y_top = it->y - it->glyph->bitmap_top;
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285 int y_bottom = it->y + it->glyph->bitmap.rows - it->glyph->bitmap_top;
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286
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287 if (descent < y_bottom) descent = y_bottom;
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288 if (ascent < -y_top) ascent = -y_top;
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289 }
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290 ascent_r = ascent;
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291 descent_r = descent;
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292 return;
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293 }
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294
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295 int TextGlyphStreamHelper::CharWidth(int code) {
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296 try {
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297 XKFont::Glyph* g = face->GlyphLoad(code);
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298 return g->advance.x;
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299 } catch(...) {
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300 return 0;
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301 }
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302 }
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303
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304 class TextHorizLayout {
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305 typedef TextStream::Iterator Iterator;
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306
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307 Iterator pos;
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308 Iterator end;
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309 TextGlyphStream* data;
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310 TextGlyphStreamHelper helper;
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311 int tab_width;
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312 int cur_y;
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313
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314 void SetName(void);
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315 void SetLineHead(void);
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316 void MakeLine(int line_first, int width, vector<int>& lineheights);
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317 public:
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318 TextHorizLayout(XKFont::Font* font);
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319 void Layout(TextStream& stream, TextGlyphStream& glyph, vector<int>& lineheights, int width);
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320 };
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321
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322 TextHorizLayout::TextHorizLayout(XKFont::Font* font) :
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323 helper(font), tab_width(0), cur_y(0) {
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324 }
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325
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326 void TextHorizLayout::Layout(TextStream& stream, TextGlyphStream& glyph, vector<int>& lineheights, int width) {
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327 pos = stream.container.begin();
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328 end = stream.container.end();
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329 data = &glyph;
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330
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331 helper.Init(data);
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332 tab_width = 0;
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333 cur_y = 0;
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334 int prev_y = 0;
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335 int line_start = glyph.size();
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336 while(pos != end) {
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337 /*
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338 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;}
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339 if (pos->type == TextElem::escape) { cout<<"escape "<<pos->impl.Escape.type<<endl;}
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340 */
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341 SetName();
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342 SetLineHead();
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343 MakeLine(line_start, width, lineheights);
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344 if (line_start != glyph.size()) {
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345 data->back().flag = TextGlyph::Flag(data->back().flag | TextGlyph::PhraseEnd | TextGlyph::LineEnd);
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346 }
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347 prev_y = cur_y;
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348 if (pos != end && pos->type == TextElem::escape && pos->impl.Escape.type == TextElem::ret) pos++;
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349 line_start = glyph.size();
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350 }
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351 return;
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352 }
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353
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354 void TextHorizLayout::SetName(void) {
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355 Iterator it;
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356
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357 tab_width = 0;
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358 /* ¹ÔƬ¤¬Ì¾Á°¤Ê¤é¡¢½èÍý³«»Ï */
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359 for (; pos != end; pos++) {
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360 if (pos->type == TextElem::escape || pos->type == TextElem::glyph) break;
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361 int x = 0;
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362 helper.Add(x, pos, pos+1);
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363 }
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364
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365 if (pos->type != TextElem::escape || pos->impl.Escape.type != TextElem::name_start) return;
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366
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367 /* ̾Á°¤ò¥»¥Ã¥È¤·¡¢¹ÔƬ¤Î¡Ö¤Îʬ¤ò´Þ¤á¤Æ¥¿¥ÖÉý¤òÀßÄꤹ¤ë */
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368 pos++;
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369 for (it = pos; it != end; it++) {
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370 if (it->type == TextElem::escape && it->impl.Escape.type == TextElem::name_end) break;
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371 }
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372 if (it == end) return;
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373 int line_firstpos = data->size();
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374 pos = helper.Add(tab_width, pos, it);
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375 pos++;
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376 helper.SetGroup(data->begin() + line_firstpos, data->end());
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377
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378 // ¹ÔƬ¤Î¡Öʬ¤ò³«¤±¤ë
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379 try {
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380 tab_width += helper.CharWidth(0xa1d6); /* ¡Ö */
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381 } catch(...) {}
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382
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383 return;
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384 };
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385
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386 void TextHorizLayout::SetLineHead(void) {
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387
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388 /* ¹ÔƬ¤Ï ¡Ö¤Ê¤É¤«¡© */
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389
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390 for (; pos != end; pos++) {
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391 if (pos->type == TextElem::escape || pos->type == TextElem::glyph) break;
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392 int x = 0;
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393 helper.Add(x, pos, pos+1);
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394 }
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395 if (pos->type != TextElem::glyph || Kinsoku(pos->impl.Glyph.code) != KinsokuHead) return;
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396
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397 /* ¡Ö¤Ê¤Î¤Ç¡¢½èÍý¤¹¤ë */
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398 if (tab_width != 0) tab_width -= helper.CharWidth(pos->impl.Glyph.code);
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399 int line_firstpos = data->size();
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400 pos = helper.Add(tab_width, pos, pos+1);
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401 return;
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402 }
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403
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404 void TextHorizLayout::MakeLine(int line_start, int width, vector<int>& lineheights) {
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405
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406 int x = tab_width;
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407 /* ¤Þ¤º¡¢Á´Ê¸»úÉÁ²è¤¹¤ë */
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408 while(pos != end) {
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409 pos = helper.Add(x, pos, end);
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410 if (pos->type == TextElem::escape && pos->impl.Escape.type == TextElem::ruby_start) {
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411 pos = helper.AddRuby(x, pos, end);
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412 }
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413 if (pos != end && pos->type == TextElem::escape) {
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414 if (pos->impl.Escape.type == TextElem::ret) break;
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415 if (pos->impl.Escape.type != TextElem::ruby_start) pos++;
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416 }
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417 }
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418 /* ¹Ô¤Ëʬ³ä¤·¤Æ¤¤¤¯ */
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419 TextGlyphStream::iterator it_start = data->begin() + line_start;
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420 TextGlyphStream::iterator it_end = data->end();
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421 TextGlyphStream::iterator it = it_start;
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422
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423 TextGlyphStream::iterator group_head = it_start;
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424 int xstart = tab_width;
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425 int xend = width;
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426 while(it != it_end) {
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427 // ¤³¤Î¹Ô¤Î½ª¤ï¤ê¤ò·è¤á¤ë
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428 bool is_ruby = false;
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429 TextGlyphStream::iterator it_line_start = it;
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430 for (; it != it_end; it++) {
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431 if (it->x + it->glyph->advance.x > xend) break;
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432 if (it->flag & TextGlyph::Group) is_ruby = true;
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433 if (!(it->flag & TextGlyph::Group)) group_head = it;
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434 }
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435 // ¿åÊ¿°ÜÆ°¤ÎÂ礤µ¤ò·è¤á¤ë¡£¥Ç¥Õ¥©¥ë¥È¤Ç¥¿¥Ö°ÌÃÖ¤Þ¤ÇÌ᤹
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436 int xadd_start = -xstart + tab_width;
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437 int xadd_end = xadd_start;
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438 // it == ¼¡¹Ô¤ÎÀèƬ¤Ê¤Î¤Ç¡¢º£¹Ô¤ÎËöÈø¤ØÌ᤹
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439 // ¤¿¤À¤·¡¢ ºÇÄã°ìʸ»ú¤Îɽ¼¨¤ÏÊݾÚ
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440 if (it != it_line_start && it != it_line_start+1 && it != it_end) it--;
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441 if (it != it_end) {
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442 // ¥°¥ë¡¼¥×²½¤µ¤ì¤Æ¤¤¤ëʸ»ú¤Ç½ªÎ»¤·¤¿¤é¡¢Á°¤Îʸ»ú¤ËÌ᤹
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443 if (it->flag & TextGlyph::Group) it = group_head;
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444 // ¼¡¤¬¹ÔƬ¶Ø§ʸ»ú¤Ê¤é¤³¤Î¹Ô¤ËÆþ¤ì¤ë
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445 if ( (it+1) != it_end && (it+1)->flag & TextGlyph::Kinsoku) it++;
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446 // °ÜÆ°¤¹¤ëÂ礤µ¤ò·è¤á¤ë
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447 // ¹Ôü¤¾¤í¤¨¡¢¹ÔËöʸ»ú¤Ê¤éȾʸ»úʬ¤À¤±Æͤ½Ð¤ë
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448 int glyph_xend = it->x + it->glyph->advance.x;
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449 if (it != it_line_start && (it-1)->flag & TextGlyph::Group) { // ¥°¥ë¡¼¥×²½Ê¸»ú¤Î¾ì¹ç¡¢£±Ê¸»úÁ°¤â¸«¤ë
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450 if (glyph_xend < (it-1)->x + (it-1)->glyph->advance.x)
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451 glyph_xend = (it-1)->x + (it-1)->glyph->advance.x;
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452 }
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453 xadd_end += xend - glyph_xend;
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454 if (it->flag & TextGlyph::Kinsoku)
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455 xadd_end += it->glyph->advance.x / 2;
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456 }
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457 if (it != it_end) {
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458 it->flag = TextGlyph::Flag(it->flag | TextGlyph::LineEnd);
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459 it++; // it == ¼¡¹Ô¤ÎÀèƬ¤Ø
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460 }
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461 int ascent, descent;
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462 helper.CalcHeight(ascent, descent, it_start, it);
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463 if (ascent+descent < helper.min_lineheight) {
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464 int dif = helper.min_lineheight-(ascent+descent);
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465 ascent += dif/2;
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466 descent += dif-(dif/2);
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467 }
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468 if (is_ruby) ascent+=ruby_lineskip;
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469 helper.AdjustPosition(xadd_start, xadd_end, cur_y+ascent+1, it_start, it);
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470 cur_y += ascent + descent + line_skip;
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471 lineheights.push_back(ascent+descent+line_skip);
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472
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473 /* ¼¡¤Î¹Ô¤Ø */
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474 if (it != it_end) {
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475 it_start = it;
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476 group_head = it_start;
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477 /* £±Ê¸»úÌܤ¬¥°¥ë¡¼¥×²½¤µ¤ì¤Æ¤¤¤ì¤Ð¡¢¥°¥ë¡¼¥×¤ÎÀèƬʸ»ú¤Ë¤¹¤ë */
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478 xstart = it->x;
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479 if (it->flag & TextGlyph::Group) {
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480 TextGlyphStream::iterator jit;
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481 for (jit = it; jit != it_end; jit++) {
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482 if (xstart > jit->x) xstart = jit->x;
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483 if (!(jit->flag & TextGlyph::Group)) break;
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484 }
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485 }
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486 xend = it->x + width-tab_width;
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487 }
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488 }
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489 return;
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490 }
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491
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492 namespace XKFont {
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493
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494 HorizLayout::HorizLayout(const char* fontname, int size) {
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495 font = new Font(fontname, size);
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496 pimpl = new ::TextHorizLayout(font);
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497 }
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498
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499 HorizLayout::~HorizLayout() {
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500 delete pimpl;
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501 delete font;
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502 }
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503
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504 void HorizLayout::Layout(TextStream& stream, TextGlyphStream& glyph, vector<int>& lineheights, int width) {
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505 pimpl->Layout(stream, glyph, lineheights, width);
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506 };
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507 TextGlyphStream HorizLayout::Layout(const char* str, int width, int r, int gc, int b) {
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508 TextStream s;
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509 s.SetColor(r,gc,b);
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510 s.Add(str);
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511 TextGlyphStream g;
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512 vector<int> h;
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513 Layout(s, g, h, width);
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514 return g;
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515 }
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516
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517 };
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518
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519 int TextGlyphStream::width(void) {
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520 if (empty()) return 0;
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521 iterator it;
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522 int xmax = 0;
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523 for (it=begin(); it!=end(); it++) {
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524 int x = it->x + it->glyph->advance.x;
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525 if (x > xmax) xmax = x;
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526 }
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527 return xmax + 1;
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528 }
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529
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530 int TextGlyphStream::height(void) {
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531 if (empty()) return 0;
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532 iterator it;
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533 int ymax = 0;
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534 it = end();
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535 while(1) {
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536 it--;
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537 int y = it->y + it->glyph->bitmap.rows - it->glyph->bitmap_top;
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538 if (ymax < y) ymax = y;
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539 if (it == begin()) break;
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540 if (it->flag & TextGlyph::LineEnd) {
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541 if (!(it->flag & TextGlyph::PhraseEnd)) break; // PhraseEnd ¤ÏºÇ¸å¤Îʸ»ú
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542 }
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543 }
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544 return ymax + 1;
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545 }
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546
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