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annotate engine/core/video/fonts/subimagefont.cpp @ 46:90005975cdbb

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* Final LGPL switch step by adjusting the file headers * Remaining issues (just slightly related to the unittest switch): * No working unittest solution for msvc2005 yet * Unittests not working with mingw + scons either though this seems hard to impossible to fix without an expert in this field * sample_unit_test.cpp would need to get modified for unittest++; it still contains the old boost unittest code
author mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
date Sun, 13 Jul 2008 11:05:12 +0000
parents 4a0efb7baf70
children 756b895e1dab
rev   line source
0
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1 /***************************************************************************
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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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 * *
46
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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. *
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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 *
0
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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 <string>
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24
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25 // Platform specific includes
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26 #include "util/base/fife_stdint.h"
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27
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28 // 3rd party library includes
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29 #include <SDL.h>
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30
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31 // FIFE includes
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32 // These includes are split up in two parts, separated by one empty line
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33 // First block: files included from the FIFE root src directory
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34 // Second block: files included from the same folder
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35 #include "util/base/exception.h"
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36 #include "util/log/logger.h"
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37 #include "util/structures/rect.h"
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38 #include "video/image.h"
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39 #include "video/renderbackend.h"
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40 #include "video/imagepool.h"
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41
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42 #include "subimagefont.h"
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43
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44 namespace FIFE {
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45 static Logger _log(LM_GUI);
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46
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47 SubImageFont::SubImageFont(const std::string& filename, const std::string& glyphs, ImagePool& pool)
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48 : ImageFontBase(), m_pool(pool) {
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49
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50 FL_LOG(_log, LMsg("guichan_image_font, loading ") << filename << " glyphs " << glyphs);
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51
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52 int image_id = m_pool.addResourceFromFile(filename);
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53 Image& img = dynamic_cast<Image&>(m_pool.get(image_id));
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54 SDL_Surface* surface = img.getSurface();
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55
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56 if( !surface ) {
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57 throw CannotOpenFile(filename);
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58 }
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59
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60 // Make sure we get 32bit RGB
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61 // and copy the Pixelbuffers surface
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62 SDL_Surface *tmp = SDL_CreateRGBSurface(SDL_SWSURFACE,
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63 surface->w,surface->h,32,
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64 RMASK, GMASK, BMASK ,NULLMASK);
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65
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66 SDL_BlitSurface(surface,0,tmp,0);
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67 surface = tmp;
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68
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69 // Prepare the data for extracting the glyphs.
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70 uint32_t *pixels = reinterpret_cast<uint32_t*>(surface->pixels);
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71
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72 int x, w;
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73 x = 0; w=0;
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74
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75 SDL_Rect src;
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76
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77 src.h = surface->h;
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78 src.y = 0;
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79
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80 uint32_t separator = pixels[0];
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81 while(x < surface->w && pixels[x] == separator)
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82 ++x;
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83 uint32_t colorkey = pixels[x];
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84
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85 FL_DBG(_log, LMsg("image_font")
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86 << " glyph separator is "
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87 << pprint(reinterpret_cast<void*>(separator))
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88 << " transparent color is "
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89 << pprint(reinterpret_cast<void*>(colorkey)));
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90
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91 // Disable alpha blending, so that we use colorkeying
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92 SDL_SetAlpha(surface,0,255);
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93 SDL_SetColorKey(surface,SDL_SRCCOLORKEY,colorkey);
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94
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95 // Finally extract all glyphs
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96 for(size_t i=0; i != glyphs.size(); ++i) {
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97 w=0;
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98 while(x < surface->w && pixels[x] == separator)
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99 ++x;
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100 if( x == surface->w )
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101 break;
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102
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103 while(x + w < surface->w && pixels[x + w] != separator)
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104 ++w;
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105
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106 src.x = x;
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107 src.w = w;
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108
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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109 tmp = SDL_CreateRGBSurface(SDL_SWSURFACE,
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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110 w,surface->h,32,
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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111 RMASK, GMASK, BMASK ,NULLMASK);
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112
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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113 SDL_FillRect(tmp,0,colorkey);
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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114 SDL_BlitSurface(surface,&src,tmp,0);
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115
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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116 // Disable alpha blending, so that we use colorkeying
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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117 SDL_SetAlpha(tmp,0,255);
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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118 SDL_SetColorKey(tmp,SDL_SRCCOLORKEY,colorkey);
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119
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120
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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121 m_glyphs[ glyphs[i] ].surface = tmp;
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122
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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123 x += w;
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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124 }
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125
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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126 // Set placeholder glyph
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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127 if( m_glyphs.find('?') != m_glyphs.end() ) {
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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128 m_placeholder = m_glyphs['?'];
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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129 } else {
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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130 m_placeholder.surface = 0;
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131 }
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132
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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133 mHeight = surface->h;
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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134 SDL_FreeSurface(surface);
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135 }
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136
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137
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138 }
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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139