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annotate ext/guichan-0.8.1/include/guichan/imagefont.hpp @ 164:5b04a7d3ded6

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typo fix some missing event (de)registrations ability to capture one event multiple times (instead of only having one slot, we have groups and each group has an own slot, the default group is "default" so we are backward compatible
author spq@33b003aa-7bff-0310-803a-e67f0ece8222
date Wed, 15 Oct 2008 14:57:04 +0000
parents 4a0efb7baf70
children
rev   line source
0
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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1 /* _______ __ __ __ ______ __ __ _______ __ __
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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2 * / _____/\ / /\ / /\ / /\ / ____/\ / /\ / /\ / ___ /\ / |\/ /\
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3 * / /\____\// / // / // / // /\___\// /_// / // /\_/ / // , |/ / /
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4 * / / /__ / / // / // / // / / / ___ / // ___ / // /| ' / /
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5 * / /_// /\ / /_// / // / // /_/_ / / // / // /\_/ / // / | / /
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6 * /______/ //______/ //_/ //_____/\ /_/ //_/ //_/ //_/ //_/ /|_/ /
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7 * \______\/ \______\/ \_\/ \_____\/ \_\/ \_\/ \_\/ \_\/ \_\/ \_\/
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8 *
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9 * Copyright (c) 2004 - 2008 Olof Naessén and Per Larsson
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10 *
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11 *
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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12 * Per Larsson a.k.a finalman
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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13 * Olof Naessén a.k.a jansem/yakslem
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14 *
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15 * Visit: http://guichan.sourceforge.net
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16 *
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17 * License: (BSD)
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18 * Redistribution and use in source and binary forms, with or without
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19 * modification, are permitted provided that the following conditions
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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20 * are met:
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21 * 1. Redistributions of source code must retain the above copyright
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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22 * notice, this list of conditions and the following disclaimer.
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23 * 2. Redistributions in binary form must reproduce the above copyright
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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24 * notice, this list of conditions and the following disclaimer in
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25 * the documentation and/or other materials provided with the
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26 * distribution.
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27 * 3. Neither the name of Guichan nor the names of its contributors may
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28 * be used to endorse or promote products derived from this software
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29 * without specific prior written permission.
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30 *
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31 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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32 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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33 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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34 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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35 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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36 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
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37 * TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
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38 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
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39 * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
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40 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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41 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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42 */
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43
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44 #ifndef GCN_IMAGEFONT_HPP
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45 #define GCN_IMAGEFONT_HPP
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46
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47 #include <string>
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48
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49 #include "guichan/font.hpp"
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50 #include "guichan/platform.hpp"
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51 #include "guichan/rectangle.hpp"
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52
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53 namespace gcn
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54 {
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55 class Color;
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56 class Graphics;
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57 class Image;
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58
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59 /**
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60 * A font using an image containing the font data. ImageFont can be used
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61 * with any supported by the current used ImageLoader.
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62 *
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63 * These are two examples of an image containing a font.
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64 * \image html imagefontexample.bmp
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65 * \image html imagefontexample2.bmp
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66 *
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67 * The Image font format works like this: The first pixel, the pixal at
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68 * coordinate (0,0), tells which color to look for when seperating glyphs.
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69 * You create an image with your glyphs and simple separates them with
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70 * the seperation color. When you create your image font you supply the
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71 * constructor with the glyphs present in your image.
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72 *
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73 * To create an ImageFont from the first image example above the following
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74 * constructor call should be made:
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75 * @code gcn::ImageFont imageFont("fixedfont_big.bmp"," abcdefghijklmno\
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76 pqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789"); @endcode
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77 *
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78 * Note worthy is that the first glyph actually gives the width of space.
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79 * Glyphs can, as seen in the second image example above, be seperated with
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80 * horizontal lines making it possible to draw glyphs on more then one
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81 * line in the image. However, these vertical lines must have a height of
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82 * one pixel!
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83 */
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84 class GCN_CORE_DECLSPEC ImageFont: public Font
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85 {
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86 public:
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87
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88 /**
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89 * Constructor. Takes an image file containing the font and
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90 * a string containing the glyphs. The glyphs in the string should
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91 * be in the same order as they appear in the font image.
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92 *
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93 * @param filename The filename of the image.
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94 * @param glyphs The glyphs found in the image.
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95 * @throws Exception when glyph list is incorrect or the font file is
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96 * corrupt or if no ImageLoader exists.
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97 */
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98 ImageFont(const std::string& filename, const std::string& glyphs);
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99
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100 /**
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101 * Constructor. Takes an image containing the font and
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102 * a string containing the glyphs. The glyphs in the string should
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103 * be in the same order as they appear in the font image.
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104 * The image will be deleted in the destructor.
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105 *
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106 * @param image The image with font glyphs.
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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107 * @param glyphs The glyphs found in the image.
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108 * @throws Exception when glyph list is incorrect or the font image is
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109 * is missing.
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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110 */
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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111 ImageFont(Image* image, const std::string& glyphs);
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112
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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113 /**
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114 * Constructor. Takes an image file containing the font and
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115 * two boundaries of ASCII values. The font image should include
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116 * all glyphs specified with the boundaries in increasing ASCII
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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117 * order. The boundaries are inclusive.
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118 *
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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119 * @param filename The filename of the image.
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120 * @param glyphsFrom The ASCII value of the first glyph found in the
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121 * image.
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122 * @param glyphsTo The ASCII value of the last glyph found in the
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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123 * image.
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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124 * @throws Exception when glyph bondaries are incorrect or the font
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125 * file is corrupt or if no ImageLoader exists.
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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126 */
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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127 ImageFont(const std::string& filename,
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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128 unsigned char glyphsFrom=32,
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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129 unsigned char glyphsTo=126);
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130
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131 /**
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132 * Destructor.
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133 */
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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134 virtual ~ImageFont();
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135
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136 /**
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137 * Draws a glyph.
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138 *
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139 * NOTE: You normally won't use this function to draw text since
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140 * the Graphics class contains better functions for drawing
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141 * text.
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142 *
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143 * @param graphics A graphics object used for drawing.
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144 * @param glyph A glyph to draw.
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145 * @param x The x coordinate where to draw the glyph.
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146 * @param y The y coordinate where to draw the glyph.
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147 * @return The width of the glyph in pixels.
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148 */
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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149 virtual int drawGlyph(Graphics* graphics, unsigned char glyph,
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150 int x, int y);
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151
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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152 /**
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153 * Sets the space between rows in pixels. Default is 0 pixels.
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154 * The space can be negative.
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155 *
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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156 * @param spacing The space between rows in pixels.
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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157 * @see getRowSpacing
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158 */
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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159 virtual void setRowSpacing(int spacing);
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160
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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161 /**
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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162 * Gets the space between rows in pixels.
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163 *
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164 * @return The space between rows in pixels.
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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165 * @see setRowSpacing
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166 */
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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167 virtual int getRowSpacing();
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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168
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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169 /**
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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170 * Sets the spacing between glyphs in pixels. Default is 0 pixels.
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171 * The space can be negative.
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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172 *
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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173 * @param spacing The glyph space in pixels.
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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174 * @see getGlyphSpacing
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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175 */
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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176 virtual void setGlyphSpacing(int spacing);
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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177
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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178 /**
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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179 * Gets the spacing between letters in pixels.
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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180 *
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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181 * @return the spacing.
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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182 * @see setGlyphSpacing
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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183 */
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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184 virtual int getGlyphSpacing();
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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185
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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186 /**
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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187 * Gets a width of a glyph in pixels.
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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188 *
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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189 * @param glyph The glyph which width will be returned.
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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190 * @return The width of a glyph in pixels.
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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191 */
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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192 virtual int getWidth(unsigned char glyph) const;
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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193
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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194
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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195 // Inherited from Font
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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196
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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197 virtual int getWidth(const std::string& text) const;
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198
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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199 virtual void drawString(Graphics* graphics, const std::string& text,
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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diff changeset
200 int x, int y);
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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201
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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202 virtual int getHeight() const;
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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203
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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204 virtual int getStringIndexAt(const std::string& text, int x);
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205
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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diff changeset
206 protected:
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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207 /**
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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208 * Scans for a certain glyph.
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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209 *
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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210 * @param glyph The glyph to scan for. Used for exception messages.
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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211 * @param x The x coordinate where to begin the scan. The coordinate
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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212 * will be updated with the end x coordinate of the glyph
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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213 * when the scan is complete.
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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214 * @param y The y coordinate where to begin the scan. The coordinate
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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215 * will be updated with the end y coordinate of the glyph
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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216 * when the scan is complete.
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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217 * @param separator The color separator to look for where the glyph ends.
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218 * @return A rectangle with the found glyph dimension in the image
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219 * with the font.
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220 * @throws Exception when no glyph is found.
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221 */
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222 Rectangle scanForGlyph(unsigned char glyph,
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223 int x,
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224 int y,
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225 const Color& separator);
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226
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227 /**
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228 * Holds the glyphs areas in the image.
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229 */
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230 Rectangle mGlyph[256];
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231
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232 /**
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233 * Holds the height of the image font.
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234 */
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235 int mHeight;
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236
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237 /**
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238 * Holds the glyph spacing of the image font.
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239 */
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240 int mGlyphSpacing;
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241
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242 /**
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243 * Holds the row spacing of the image font.
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244 */
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245 int mRowSpacing;
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246
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247 /**
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248 * Holds the image with the font data.
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249 */
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250 Image* mImage;
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251
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252 /**
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253 * Holds the filename of the image with the font data.
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254 */
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255 std::string mFilename;
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256 };
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257 }
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258
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259 #endif // end GCN_IMAGEFONT_HPP