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annotate dwt/graphics/FontData.d @ 35:7d135fe0caf2

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Ported dwt.graphics.Cursor and dwt.widgets.MenuItem
author Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com>
date Sun, 14 Sep 2008 23:32:29 +0200
parents 93b13b15f0b1
children db5a898b2119
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1 /*******************************************************************************
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2 * Copyright (c) 2000, 2007 IBM Corporation and others.
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3 * All rights reserved. This program and the accompanying materials
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4 * are made available under the terms of the Eclipse Public License v1.0
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5 * which accompanies this distribution, and is available at
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6 * http://www.eclipse.org/legal/epl-v10.html
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7 *
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8 * Contributors:
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9 * IBM Corporation - initial API and implementation
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10 *
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11 * Port to the D programming language:
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12 * Jacob Carlborg <jacob.carlborg@gmail.com>
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13 *******************************************************************************/
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14 module dwt.graphics.FontData;
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15
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16
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17 import dwt.DWT;
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18
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19 import dwt.dwthelper.utils;
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20
0
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21 /**
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22 * Instances of this class describe operating system fonts.
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23 * <p>
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24 * For platform-independent behaviour, use the get and set methods
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25 * corresponding to the following properties:
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26 * <dl>
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27 * <dt>height</dt><dd>the height of the font in points</dd>
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28 * <dt>name</dt><dd>the face name of the font, which may include the foundry</dd>
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29 * <dt>style</dt><dd>A bitwise combination of NORMAL, ITALIC and BOLD</dd>
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30 * </dl>
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31 * If extra, platform-dependent functionality is required:
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32 * <ul>
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33 * <li>On <em>Windows</em>, the data member of the <code>FontData</code>
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34 * corresponds to a Windows <code>LOGFONT</code> structure whose fields
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35 * may be retrieved and modified.</li>
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36 * <li>On <em>X</em>, the fields of the <code>FontData</code> correspond
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37 * to the entries in the font's XLFD name and may be retrieved and modified.
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38 * </ul>
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39 * Application code does <em>not</em> need to explicitly release the
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40 * resources managed by each instance when those instances are no longer
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41 * required, and thus no <code>dispose()</code> method is provided.
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42 *
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43 * @see Font
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44 */
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45 public final class FontData {
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46 /**
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47 * the font name
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48 * (Warning: This field is platform dependent)
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49 * <p>
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50 * <b>IMPORTANT:</b> This field is <em>not</em> part of the DWT
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51 * public API. It is marked public only so that it can be shared
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52 * within the packages provided by DWT. It is not available on all
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53 * platforms and should never be accessed from application code.
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54 * </p>
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55 */
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56 public String name;
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57
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58 /**
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59 * The height of the font data in points
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60 * (Warning: This field is platform dependent)
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61 * <p>
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62 * <b>IMPORTANT:</b> This field is <em>not</em> part of the DWT
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63 * public API. It is marked public only so that it can be shared
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64 * within the packages provided by DWT. It is not available on all
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65 * platforms and should never be accessed from application code.
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66 * </p>
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67 */
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68 public float height;
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69
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70 /**
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71 * the font style
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72 * (Warning: This field is platform dependent)
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73 * <p>
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74 * <b>IMPORTANT:</b> This field is <em>not</em> part of the DWT
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75 * public API. It is marked public only so that it can be shared
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76 * within the packages provided by DWT. It is not available on all
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77 * platforms and should never be accessed from application code.
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78 * </p>
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79 */
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80 public int style;
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81
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82 /**
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83 * the NSFont font name
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84 * (Warning: This field is platform dependent)
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85 * <p>
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86 * <b>IMPORTANT:</b> This field is <em>not</em> part of the DWT
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87 * public API. It is marked public only so that it can be shared
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88 * within the packages provided by DWT. It is not available on all
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89 * platforms and should never be accessed from application code.
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90 * </p>
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91 */
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92 public String nsName;
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93
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94 /**
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95 * The locales of the font
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96 */
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97 String lang, country, variant;
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98
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99 /**
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100 * Constructs a new uninitialized font data.
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101 */
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102 public this () {
0
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103 this("", 12, DWT.NORMAL);
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104 }
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105
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106 /**
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107 * Constructs a new FontData given a string representation
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108 * in the form generated by the <code>FontData.toString</code>
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109 * method.
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110 * <p>
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111 * Note that the representation varies between platforms,
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112 * and a FontData can only be created from a string that was
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113 * generated on the same platform.
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114 * </p>
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115 *
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116 * @param str the string representation of a <code>FontData</code> (must not be null)
0
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117 *
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118 * @exception IllegalArgumentException <ul>
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119 * <li>ERROR_NULL_ARGUMENT - if the argument is null</li>
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120 * <li>ERROR_INVALID_ARGUMENT - if the argument does not represent a valid description</li>
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121 * </ul>
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122 *
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123 * @see #toString
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124 */
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125 public this(String str) {
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126 //if (str is null) DWT.error(DWT.ERROR_NULL_ARGUMENT);
0
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127 int start = 0;
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128 int end = str.indexOf('|');
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129 if (end is -1) DWT.error(DWT.ERROR_INVALID_ARGUMENT);
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130 String version1 = str.substring(start, end);
0
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131 try {
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132 if (Integer.parseInt(version1) !is 1) DWT.error(DWT.ERROR_INVALID_ARGUMENT);
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133 } catch (NumberFormatException e) {
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134 DWT.error(DWT.ERROR_INVALID_ARGUMENT);
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135 }
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136
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137 start = end + 1;
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138 end = str.indexOf('|', start);
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139 if (end is -1) DWT.error(DWT.ERROR_INVALID_ARGUMENT);
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140 String name = str.substring(start, end);
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141
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142 start = end + 1;
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143 end = str.indexOf('|', start);
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144 if (end is -1) DWT.error(DWT.ERROR_INVALID_ARGUMENT);
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145 float height = 0;
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146 try {
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147 height = Float.parseFloat(str.substring(start, end));
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148 } catch (NumberFormatException e) {
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149 DWT.error(DWT.ERROR_INVALID_ARGUMENT);
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150 }
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151
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152 start = end + 1;
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153 end = str.indexOf('|', start);
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154 if (end is -1) DWT.error(DWT.ERROR_INVALID_ARGUMENT);
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155 int style = 0;
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156 try {
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157 style = Integer.parseInt(str.substring(start, end));
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158 } catch (NumberFormatException e) {
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159 DWT.error(DWT.ERROR_INVALID_ARGUMENT);
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160 }
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161
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162 start = end + 1;
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163 end = str.indexOf('|', start);
0
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164 setName(name);
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165 setHeight(height);
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166 setStyle(style);
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167 if (end is -1) return;
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168 String platform = str.substring(start, end);
0
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169
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170 start = end + 1;
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171 end = str.indexOf('|', start);
0
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172 if (end is -1) return;
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173 String version2 = str.substring(start, end);
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174
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175 if (platform.equals("COCOA") && version2.equals("1")) {
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176 start = end + 1;
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177 end = str.length();
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178 if (start < end) nsName = str.substring(start, end);
0
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179 }
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180 }
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181
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182 /**
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183 * Constructs a new font data given a font name,
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184 * the height of the desired font in points,
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185 * and a font style.
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186 *
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187 * @param name the name of the font (must not be null)
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188 * @param height the font height in points
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189 * @param style a bit or combination of NORMAL, BOLD, ITALIC
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190 *
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191 * @exception IllegalArgumentException <ul>
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192 * <li>ERROR_NULL_ARGUMENT - when the font name is null</li>
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193 * <li>ERROR_INVALID_ARGUMENT - if the height is negative</li>
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194 * </ul>
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195 */
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1a8b3cb347e0 Fix Ctors to 'this'
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196 public this(String name, int height, int style) {
0
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197 setName(name);
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198 setHeight(height);
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199 setStyle(style);
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200 }
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201
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202 /*public*/ this(String name, float height, int style) {
0
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203 setName(name);
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204 setHeight(height);
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205 setStyle(style);
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206 }
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207
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208 /**
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209 * Compares the argument to the receiver, and returns true
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210 * if they represent the <em>same</em> object using a class
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211 * specific comparison.
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212 *
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213 * @param object the object to compare with this object
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214 * @return <code>true</code> if the object is the same as this object and <code>false</code> otherwise
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215 *
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216 * @see #hashCode
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217 */
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7d135fe0caf2 Ported dwt.graphics.Cursor and dwt.widgets.MenuItem
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218 public int opEquals (Object object) {
0
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219 if (object is this) return true;
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a9ab4c738ed8 Fix: instanceof
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220 if (!( null !is cast(FontData)object )) return false;
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e831403a80a9 Add 'cast' to casts
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221 FontData data = cast(FontData)object;
0
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222 return name.equals(data.name) && height is data.height && style is data.style;
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223 }
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224
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225 alias opEquals equals;
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226
0
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227 /**
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228 * Returns the height of the receiver in points.
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229 *
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230 * @return the height of this FontData
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231 *
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232 * @see #setHeight(int)
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233 */
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234 public int getHeight() {
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235 return cast(int)height;
0
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236 }
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237
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238 /*public*/ float getHeightF() {
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239 return height;
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240 }
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241
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242 /**
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243 * Returns the locale of the receiver.
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244 * <p>
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245 * The locale determines which platform character set this
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246 * font is going to use. Widgets and graphics operations that
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247 * use this font will convert UNICODE strings to the platform
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248 * character set of the specified locale.
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249 * </p>
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250 * <p>
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251 * On platforms where there are multiple character sets for a
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252 * given language/country locale, the variant portion of the
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253 * locale will determine the character set.
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254 * </p>
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255 *
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256 * @return the <code>String</code> representing a Locale object
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257 * @since 3.0
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258 */
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259 public String getLocale () {
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260 StringBuffer buffer = new StringBuffer ();
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261 char sep = '_';
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262 if (lang !is null) {
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263 buffer.append (lang);
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264 buffer.append (sep);
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265 }
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266 if (country !is null) {
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267 buffer.append (country);
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268 buffer.append (sep);
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269 }
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270 if (variant !is null) {
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271 buffer.append (variant);
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272 }
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273
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274 String result = buffer.toString ();
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275 int length = result.length ();
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276 if (length > 0) {
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277 if (result.charAt (length - 1) is sep) {
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278 result = result.substring (0, length - 1);
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279 }
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280 }
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281 return result;
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282 }
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283
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284 /**
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285 * Returns the name of the receiver.
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286 * On platforms that support font foundries, the return value will
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287 * be the foundry followed by a dash ("-") followed by the face name.
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288 *
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289 * @return the name of this <code>FontData</code>
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290 *
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291 * @see #setName
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292 */
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293 public String getName() {
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294 return name;
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295 }
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296
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297 /**
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298 * Returns the style of the receiver which is a bitwise OR of
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299 * one or more of the <code>DWT</code> constants NORMAL, BOLD
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300 * and ITALIC.
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301 *
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302 * @return the style of this <code>FontData</code>
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303 *
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304 * @see #setStyle
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305 */
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306 public int getStyle() {
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307 return style;
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308 }
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309
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310 /**
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311 * Returns an integer hash code for the receiver. Any two
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312 * objects that return <code>true</code> when passed to
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313 * <code>equals</code> must return the same value for this
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314 * method.
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315 *
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316 * @return the receiver's hash
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317 *
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318 * @see #equals
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319 */
30
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320 public hast_t toHash () {
0
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321 return name.hashCode() ^ getHeight() ^ style;
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322 }
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323
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324 alias toHash hashCode;
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325
0
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326 /**
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327 * Sets the height of the receiver. The parameter is
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328 * specified in terms of points, where a point is one
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329 * seventy-second of an inch.
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330 *
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331 * @param height the height of the <code>FontData</code>
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332 *
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333 * @exception IllegalArgumentException <ul>
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334 * <li>ERROR_INVALID_ARGUMENT - if the height is negative</li>
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335 * </ul>
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336 *
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337 * @see #getHeight
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338 */
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339 public void setHeight(int height) {
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340 if (height < 0) DWT.error(DWT.ERROR_INVALID_ARGUMENT);
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341 this.height = height;
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342 }
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343
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344 /*public*/ void setHeight(float height) {
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345 if (height < 0) DWT.error(DWT.ERROR_INVALID_ARGUMENT);
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346 this.height = height;
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347 }
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348
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349 /**
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350 * Sets the locale of the receiver.
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351 * <p>
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352 * The locale determines which platform character set this
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353 * font is going to use. Widgets and graphics operations that
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354 * use this font will convert UNICODE strings to the platform
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355 * character set of the specified locale.
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356 * </p>
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357 * <p>
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358 * On platforms where there are multiple character sets for a
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359 * given language/country locale, the variant portion of the
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360 * locale will determine the character set.
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361 * </p>
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362 *
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363 * @param locale the <code>String</code> representing a Locale object
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364 * @see java.util.Locale#toString
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365 */
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366 public void setLocale(String locale) {
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367 lang = country = variant = null;
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368 if (locale !is null) {
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369 char sep = '_';
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370 int length = locale.length();
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371 int firstSep, secondSep;
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372
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373 firstSep = locale.indexOf(sep);
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374 if (firstSep is -1) {
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375 firstSep = secondSep = length;
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376 } else {
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377 secondSep = locale.indexOf(sep, firstSep + 1);
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378 if (secondSep is -1) secondSep = length;
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379 }
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380 if (firstSep > 0) lang = locale.substring(0, firstSep);
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381 if (secondSep > firstSep + 1) country = locale.substring(firstSep + 1, secondSep);
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382 if (length > secondSep + 1) variant = locale.substring(secondSep + 1);
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383 }
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384 }
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385
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386 /**
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387 * Sets the name of the receiver.
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388 * <p>
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389 * Some platforms support font foundries. On these platforms, the name
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390 * of the font specified in setName() may have one of the following forms:
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391 * <ol>
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392 * <li>a face name (for example, "courier")</li>
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393 * <li>a foundry followed by a dash ("-") followed by a face name (for example, "adobe-courier")</li>
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394 * </ol>
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395 * In either case, the name returned from getName() will include the
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396 * foundry.
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397 * </p>
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398 * <p>
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399 * On platforms that do not support font foundries, only the face name
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400 * (for example, "courier") is used in <code>setName()</code> and
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401 * <code>getName()</code>.
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402 * </p>
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403 *
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404 * @param name the name of the font data (must not be null)
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405 * @exception IllegalArgumentException <ul>
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406 * <li>ERROR_NULL_ARGUMENT - when the font name is null</li>
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407 * </ul>
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408 *
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409 * @see #getName
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410 */
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411 public void setName(String name) {
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412 //if (name is null) DWT.error(DWT.ERROR_NULL_ARGUMENT);
0
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413 this.name = name;
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414 nsName = null;
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415 }
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416
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417 /**
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418 * Sets the style of the receiver to the argument which must
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419 * be a bitwise OR of one or more of the <code>DWT</code>
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420 * constants NORMAL, BOLD and ITALIC. All other style bits are
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421 * ignored.
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422 *
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423 * @param style the new style for this <code>FontData</code>
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424 *
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425 * @see #getStyle
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426 */
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427 public void setStyle(int style) {
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428 this.style = style;
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429 nsName = null;
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430 }
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431
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432 /**
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433 * Returns a string representation of the receiver which is suitable
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434 * for constructing an equivalent instance using the
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435 * <code>FontData(String)</code> constructor.
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436 *
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437 * @return a string representation of the FontData
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438 *
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439 * @see FontData
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440 */
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441 public String toString() {
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442 StringBuffer buffer = new StringBuffer();
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443 buffer.append("1|");
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444 buffer.append(getName());
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445 buffer.append("|");
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446 buffer.append(getHeightF());
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447 buffer.append("|");
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448 buffer.append(getStyle());
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449 buffer.append("|");
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450 buffer.append("COCOA|1|");
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451 if (nsName !is null) buffer.append(nsName);
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452 return buffer.toString();
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453 }
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454
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455 }