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