Mercurial > fife-parpg

annotate engine/core/video/fonts/fontbase.cpp @ 228:756b895e1dab

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Merged unicode-support back into trunk. Now all GUI/visible strings should be unicode. Internal strings unchanged. Remember to use a font that actually has the desired codepoints. Current default unicode policiy is 'ignore'.
author phoku@33b003aa-7bff-0310-803a-e67f0ece8222
date Sat, 21 Mar 2009 10:38:11 +0000
parents 9a05ba6735b1
children 7887f3854862
rev   line source
0
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1 /***************************************************************************
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2 * Copyright (C) 2005-2008 by the FIFE team *
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3 * http://www.fifengine.de *
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4 * This file is part of FIFE. *
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5 * *
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6 * FIFE is free software; you can redistribute it and/or *
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7 * modify it under the terms of the GNU Lesser General Public *
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8 * License as published by the Free Software Foundation; either *
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9 * version 2.1 of the License, or (at your option) any later version. *
0
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10 * *
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11 * This library is distributed in the hope that it will be useful, *
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12 * but WITHOUT ANY WARRANTY; without even the implied warranty of *
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13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU *
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14 * Lesser General Public License for more details. *
0
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15 * *
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16 * You should have received a copy of the GNU Lesser General Public *
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17 * License along with this library; if not, write to the *
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18 * Free Software Foundation, Inc., *
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19 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA *
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20 ***************************************************************************/
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21
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22 // Standard C++ library includes
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23 #include <vector>
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24
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25 // Platform specific includes
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26
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27 // 3rd party library includes
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28 #include <boost/filesystem/convenience.hpp>
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29
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30 // FIFE includes
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31 // These includes are split up in two parts, separated by one empty line
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32 // First block: files included from the FIFE root src directory
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33 // Second block: files included from the same folder
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34 #include "util/structures/rect.h"
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35 #include "util/base/exception.h"
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36 #include "util/utf8/utf8.h"
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37 #include "video/image.h"
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38 #include "video/renderbackend.h"
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39
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40 #include "fontbase.h"
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41
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42 namespace FIFE {
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43
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44 FontBase::FontBase():
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45 m_pool(),
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46 mColor(),
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47 mGlyphSpacing(0),
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48 mRowSpacing(0),
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49 mFilename(""),
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50 m_antiAlias(true) {
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51 }
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52
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53 void FontBase::setRowSpacing(int spacing) {
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54 mRowSpacing = spacing;
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55 }
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56
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57 int FontBase::getRowSpacing() const {
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58 return mRowSpacing;
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59 }
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60
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61 void FontBase::setGlyphSpacing(int spacing) {
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62 mGlyphSpacing = spacing;
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63 }
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64
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65 int FontBase::getGlyphSpacing() const {
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66 return mGlyphSpacing;
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67 }
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68
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69 void FontBase::setAntiAlias(bool antiAlias) {
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70 m_antiAlias = antiAlias;
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71 }
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72
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73 bool FontBase::isAntiAlias() {
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74 return m_antiAlias;
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75 }
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76
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77 SDL_Color FontBase::getColor() const {
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78 return mColor;
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79 }
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80
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81 int FontBase::getStringIndexAt(const std::string &text, int x) {
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82 assert( utf8::is_valid(text.begin(), text.end()) );
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83 std::string::const_iterator cur;
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84 if (text.size() == 0) return 0;
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85 if (x <= 0) return 0;
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86
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87 cur = text.begin();
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88
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89 utf8::next(cur, text.end());
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90
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91 std::string buff;
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92 while(cur != text.end()) {
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93 buff = std::string(text.begin(), cur);
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94
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95 if (getWidth(buff) > x) {
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96 return buff.size();
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97 } else {
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98 utf8::next(cur, text.end());
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99 }
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100 }
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101
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102 if (x > getWidth(text)) {
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103 return text.size();
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104 } else {
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105 return buff.size();
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106 }
0
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107 }
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108
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109 Image* FontBase::getAsImage(const std::string& text) {
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110 Image* image = m_pool.getRenderedText(this, text);
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111 if (!image) {
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112 SDL_Surface* textSurface = renderString(text);
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diff changeset
113 image = RenderBackend::instance()->createImage(textSurface);
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diff changeset
114 m_pool.addRenderedText( this, text, image );
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diff changeset
115 }
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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diff changeset
116 return image;
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117 }
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118
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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diff changeset
119 Image* FontBase::getAsImageMultiline(const std::string& text) {
228
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diff changeset
120 const uint8_t newline_utf8 = '\n';
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diff changeset
121 uint32_t newline;
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diff changeset
122 utf8::utf8to32(&newline_utf8,&newline_utf8 + 1,&newline);
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diff changeset
123 //std::cout << "Text:" << text << std::endl;
0
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diff changeset
124 Image* image = m_pool.getRenderedText(this, text);
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diff changeset
125 if (!image) {
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diff changeset
126 std::vector<SDL_Surface*> lines;
228
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diff changeset
127 std::string::const_iterator it = text.begin();
0
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128 // split text as needed
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129 int render_width = 0, render_height = 0;
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130 do {
228
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131 uint32_t codepoint = 0;
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diff changeset
132 std::string line;
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diff changeset
133 while( codepoint != newline && it != text.end() )
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diff changeset
134 {
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diff changeset
135 codepoint = utf8::next(it,text.end());
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diff changeset
136 if( codepoint != newline )
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diff changeset
137 utf8::append(codepoint, back_inserter(line));
0
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138 }
228
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139 //std::cout << "Line:" << line << std::endl;
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diff changeset
140 SDL_Surface* text_surface = renderString(line);
0
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diff changeset
141 if (text_surface->w > render_width) {
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diff changeset
142 render_width = text_surface->w;
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143 }
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144 lines.push_back(text_surface);
228
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diff changeset
145 } while (it != text.end());
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146
0
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diff changeset
147 render_height = (getRowSpacing() + getHeight()) * lines.size();
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diff changeset
148 SDL_Surface* final_surface = SDL_CreateRGBSurface(SDL_SWSURFACE,
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diff changeset
149 render_width,render_height,32,
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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diff changeset
150 RMASK, GMASK, BMASK ,AMASK);
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diff changeset
151 if (!final_surface) {
228
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152 throw SDLException(std::string("CreateRGBSurface failed: ") + SDL_GetError());
0
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153 }
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154 SDL_FillRect(final_surface, 0, 0x00000000);
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diff changeset
155 int ypos = 0;
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diff changeset
156 for (std::vector<SDL_Surface*>::iterator i = lines.begin(); i != lines.end(); ++i) {
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diff changeset
157 SDL_Rect dst_rect = { 0, 0, 0, 0 };
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diff changeset
158 dst_rect.y = ypos;
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159
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diff changeset
160 SDL_SetAlpha(*i,0,SDL_ALPHA_OPAQUE);
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diff changeset
161 SDL_BlitSurface(*i,0,final_surface,&dst_rect);
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diff changeset
162 ypos += getRowSpacing() + getHeight();
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diff changeset
163 SDL_FreeSurface(*i);
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164 }
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165 image = RenderBackend::instance()->createImage(final_surface);
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diff changeset
166 m_pool.addRenderedText(this, text, image);
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167 }
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168 return image;
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169 }
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170
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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171 std::string FontBase::splitTextToWidth (const std::string& text, int render_width) {
228
756b895e1dab Merged unicode-support back into trunk.
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172 const uint32_t whitespace = ' ';
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diff changeset
173 const uint8_t newline_utf8 = '\n';
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diff changeset
174 uint32_t newline;
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diff changeset
175 utf8::utf8to32(&newline_utf8,&newline_utf8 + 1,&newline);
0
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176 if (render_width <= 0 || text.empty()) {
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diff changeset
177 return text;
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178 }
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diff changeset
179 std::string output;
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diff changeset
180 std::string line;
228
756b895e1dab Merged unicode-support back into trunk.
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181 std::string::const_iterator pos = text.begin();
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diff changeset
182 std::list<std::pair<size_t,std::string::const_iterator> > break_pos;
0
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diff changeset
183 bool firstLine = true;
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diff changeset
184
228
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diff changeset
185 while( pos != text.end() )
0
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186 {
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diff changeset
187 break_pos.clear();
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188 if( !firstLine ) {
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diff changeset
189 line = "\n";
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diff changeset
190 } else {
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diff changeset
191 firstLine = false;
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192 }
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193
160
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diff changeset
194 bool haveNewLine = false;
228
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diff changeset
195 while( getWidth(line) < render_width && pos != text.end() )
0
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diff changeset
196 {
228
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diff changeset
197 uint32_t codepoint = utf8::next(pos, text.end());
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diff changeset
198 if (codepoint == whitespace && !line.empty())
0
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199 break_pos.push_back( std::make_pair(line.length(),pos) );
228
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diff changeset
200
756b895e1dab Merged unicode-support back into trunk.
phoku@33b003aa-7bff-0310-803a-e67f0ece8222
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diff changeset
201 if( codepoint != newline )
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phoku@33b003aa-7bff-0310-803a-e67f0ece8222
parents: 160
diff changeset
202 utf8::append(codepoint, back_inserter(line) );
0
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diff changeset
203
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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diff changeset
204 // Special case: Already newlines in string:
228
756b895e1dab Merged unicode-support back into trunk.
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diff changeset
205 if( codepoint == newline ) {
0
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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diff changeset
206 output.append(line);
160
9a05ba6735b1 Now textwrapping handles newlines correctly in trunk, too.
phoku@33b003aa-7bff-0310-803a-e67f0ece8222
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diff changeset
207 line = "";
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diff changeset
208 haveNewLine = true;
0
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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diff changeset
209 break;
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210 }
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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diff changeset
211 }
160
9a05ba6735b1 Now textwrapping handles newlines correctly in trunk, too.
phoku@33b003aa-7bff-0310-803a-e67f0ece8222
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diff changeset
212 if( haveNewLine )
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phoku@33b003aa-7bff-0310-803a-e67f0ece8222
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diff changeset
213 continue;
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phoku@33b003aa-7bff-0310-803a-e67f0ece8222
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diff changeset
214
228
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phoku@33b003aa-7bff-0310-803a-e67f0ece8222
parents: 160
diff changeset
215 if( pos == text.end() )
0
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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diff changeset
216 break;
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diff changeset
217
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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diff changeset
218 if( break_pos.empty() ) {
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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diff changeset
219 // No break position and line length smaller than 2
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
diff changeset
220 // means the renderwidth is really screwed. Just continue
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
diff changeset
221 // appending single character lines.
228
756b895e1dab Merged unicode-support back into trunk.
phoku@33b003aa-7bff-0310-803a-e67f0ece8222
parents: 160
diff changeset
222 if( utf8::distance(line.begin(),line.end()) <= 1 ) {
0
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
diff changeset
223 output.append(line);
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
diff changeset
224 continue;
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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225 }
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
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226
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
diff changeset
227 // We can't do hyphenation here,
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
diff changeset
228 // so we just retreat one character :-(
228
756b895e1dab Merged unicode-support back into trunk.
phoku@33b003aa-7bff-0310-803a-e67f0ece8222
parents: 160
diff changeset
229 // FIXME
756b895e1dab Merged unicode-support back into trunk.
phoku@33b003aa-7bff-0310-803a-e67f0ece8222
parents: 160
diff changeset
230 //line = line.erase(line.length() - 1);
756b895e1dab Merged unicode-support back into trunk.
phoku@33b003aa-7bff-0310-803a-e67f0ece8222
parents: 160
diff changeset
231 //--pos;
0
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
diff changeset
232 } else {
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
diff changeset
233 line = line.substr(0,break_pos.back().first);
228
756b895e1dab Merged unicode-support back into trunk.
phoku@33b003aa-7bff-0310-803a-e67f0ece8222
parents: 160
diff changeset
234 pos = break_pos.back().second;
0
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
diff changeset
235 }
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
diff changeset
236 output.append(line);
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
diff changeset
237 }
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
diff changeset
238 if( !line.empty() ) {
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
diff changeset
239 output.append(line);
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
diff changeset
240 }
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
diff changeset
241 return output;
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
diff changeset
242 }
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
diff changeset
243 }