Mercurial > projects > dwt-linux
annotate dwt/graphics/FontData.d @ 259:c0d810de7093
Update SWT 3.4M7 to 3.4
| author | Frank Benoit <benoit@tionex.de> |
|---|---|
| date | Sun, 29 Jun 2008 14:33:38 +0200 |
| parents | 380bad9f6852 |
| children | 4bffbf81e2d6 |
| rev | line source |
|---|---|
| 72 | 1 /******************************************************************************* |
| 259 | 2 * Copyright (c) 2000, 2008 IBM Corporation and others. |
| 5 | 3 * All rights reserved. This program and the accompanying materials |
| 4 * are made available under the terms of the Eclipse Public License v1.0 | |
| 5 * which accompanies this distribution, and is available at | |
| 6 * http://www.eclipse.org/legal/epl-v10.html | |
| 7 * | |
| 8 * Contributors: | |
| 9 * IBM Corporation - initial API and implementation | |
| 72 | 10 * Port to the D programming language: |
| 11 * Frank Benoit <benoit@tionex.de> | |
| 5 | 12 *******************************************************************************/ |
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13 module dwt.graphics.FontData; |
| 5 | 14 |
| 15 | |
| 71 | 16 import dwt.DWT; |
| 5 | 17 |
| 18 import tango.text.convert.Format; | |
| 19 import tango.text.Util : locate; | |
| 20 import tango.util.Convert; | |
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21 import dwt.dwthelper.utils; |
| 238 | 22 import tango.util.log.Trace; |
| 5 | 23 |
| 24 /** | |
| 25 * Instances of this class describe operating system fonts. | |
| 26 * <p> | |
| 27 * For platform-independent behaviour, use the get and set methods | |
| 28 * corresponding to the following properties: | |
| 29 * <dl> | |
| 30 * <dt>height</dt><dd>the height of the font in points</dd> | |
| 31 * <dt>name</dt><dd>the face name of the font, which may include the foundry</dd> | |
| 32 * <dt>style</dt><dd>A bitwise combination of NORMAL, ITALIC and BOLD</dd> | |
| 33 * </dl> | |
| 34 * If extra, platform-dependent functionality is required: | |
| 35 * <ul> | |
| 36 * <li>On <em>Windows</em>, the data member of the <code>FontData</code> | |
| 37 * corresponds to a Windows <code>LOGFONT</code> structure whose fields | |
| 38 * may be retrieved and modified.</li> | |
| 39 * <li>On <em>X</em>, the fields of the <code>FontData</code> correspond | |
| 40 * to the entries in the font's XLFD name and may be retrieved and modified. | |
| 41 * </ul> | |
| 42 * Application code does <em>not</em> need to explicitly release the | |
| 43 * resources managed by each instance when those instances are no longer | |
| 44 * required, and thus no <code>dispose()</code> method is provided. | |
| 45 * | |
| 46 * @see Font | |
| 259 | 47 * @see <a href="http://www.eclipse.org/swt/">Sample code and further information</a> |
| 5 | 48 */ |
| 49 public final class FontData { | |
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50 /** |
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51 * the font name |
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52 * (Warning: This field is platform dependent) |
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53 * <p> |
| 71 | 54 * <b>IMPORTANT:</b> This field is <em>not</em> part of the DWT |
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55 * public API. It is marked public only so that it can be shared |
| 71 | 56 * within the packages provided by DWT. It is not available on all |
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57 * platforms and should never be accessed from application code. |
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58 * </p> |
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59 */ |
| 238 | 60 public String name; |
| 5 | 61 |
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62 /** |
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63 * The height of the font data in points |
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64 * (Warning: This field is platform dependent) |
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65 * <p> |
| 71 | 66 * <b>IMPORTANT:</b> This field is <em>not</em> part of the DWT |
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67 * public API. It is marked public only so that it can be shared |
| 71 | 68 * within the packages provided by DWT. It is not available on all |
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69 * platforms and should never be accessed from application code. |
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70 * </p> |
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71 */ |
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72 public float height; |
| 5 | 73 |
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74 /** |
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75 * the font style |
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76 * (Warning: This field is platform dependent) |
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77 * <p> |
| 71 | 78 * <b>IMPORTANT:</b> This field is <em>not</em> part of the DWT |
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79 * public API. It is marked public only so that it can be shared |
| 71 | 80 * within the packages provided by DWT. It is not available on all |
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81 * platforms and should never be accessed from application code. |
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82 * </p> |
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83 */ |
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84 public int style; |
| 5 | 85 |
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86 /** |
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87 * the Pango string |
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88 * (Warning: This field is platform dependent) |
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89 * <p> |
| 71 | 90 * <b>IMPORTANT:</b> This field is <em>not</em> part of the DWT |
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91 * public API. It is marked public only so that it can be shared |
| 71 | 92 * within the packages provided by DWT. It is not available on all |
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93 * platforms and should never be accessed from application code. |
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94 * </p> |
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95 */ |
| 238 | 96 public String str; |
| 5 | 97 |
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98 /** |
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99 * The locales of the font |
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100 */ |
| 238 | 101 String lang, country, variant; |
| 5 | 102 |
| 103 /** | |
| 104 * Constructs a new uninitialized font data. | |
| 105 */ | |
| 106 public this () { | |
| 71 | 107 this("", 12, DWT.NORMAL); |
| 5 | 108 } |
| 109 | |
| 110 /** | |
| 111 * Constructs a new FontData given a string representation | |
| 112 * in the form generated by the <code>FontData.toString</code> | |
| 113 * method. | |
| 114 * <p> | |
| 115 * Note that the representation varies between platforms, | |
| 116 * and a FontData can only be created from a string that was | |
| 117 * generated on the same platform. | |
| 118 * </p> | |
| 119 * | |
| 120 * @param string the string representation of a <code>FontData</code> (must not be null) | |
| 121 * | |
| 122 * @exception IllegalArgumentException <ul> | |
| 123 * <li>ERROR_NULL_ARGUMENT - if the argument is null</li> | |
| 124 * <li>ERROR_INVALID_ARGUMENT - if the argument does not represent a valid description</li> | |
| 125 * </ul> | |
| 126 * | |
| 127 * @see #toString | |
| 128 */ | |
| 238 | 129 public this(String str) { |
| 71 | 130 if (str is null) DWT.error(DWT.ERROR_NULL_ARGUMENT); |
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131 int start = 0; |
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132 int end = locate( str, '|' ); |
| 194 | 133 if (end is str.length ) DWT.error(DWT.ERROR_INVALID_ARGUMENT); |
| 238 | 134 String version1 = str[ start .. end ]; |
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135 try { |
| 194 | 136 if (to!(int)(version1) !is 1) DWT.error(DWT.ERROR_INVALID_ARGUMENT); |
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137 } catch (ConversionException e) { |
| 71 | 138 DWT.error(DWT.ERROR_INVALID_ARGUMENT); |
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139 } |
| 5 | 140 |
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141 start = end + 1; |
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142 end = locate( str, '|', start ); |
| 194 | 143 if (end is str.length ) DWT.error(DWT.ERROR_INVALID_ARGUMENT); |
| 238 | 144 String name = str[start .. end ]; |
| 5 | 145 |
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146 start = end + 1; |
| 5 | 147 end = locate( str, '|', start ); |
| 194 | 148 if (end is str.length ) DWT.error(DWT.ERROR_INVALID_ARGUMENT); |
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149 float height = 0; |
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150 try { |
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151 height = to!(float)(str[start .. end]); |
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152 } catch (ConversionException e) { |
| 71 | 153 DWT.error(DWT.ERROR_INVALID_ARGUMENT); |
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154 } |
| 5 | 155 |
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156 start = end + 1; |
| 5 | 157 end = locate( str, '|', start ); |
| 194 | 158 if (end is str.length ) DWT.error(DWT.ERROR_INVALID_ARGUMENT); |
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159 int style = 0; |
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160 try { |
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161 style = to!(int)( str[start .. end ]); |
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162 } catch (ConversionException e) { |
| 71 | 163 DWT.error(DWT.ERROR_INVALID_ARGUMENT); |
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164 } |
| 5 | 165 |
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166 start = end + 1; |
| 5 | 167 end = locate( str, '|', start ); |
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168 setName(name); |
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169 setHeight(height); |
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170 setStyle(style); |
| 194 | 171 if (end is str.length) return; |
| 238 | 172 String platform = str[ start .. end ]; |
| 5 | 173 |
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174 start = end + 1; |
| 5 | 175 end = locate( str, '|', start ); |
| 194 | 176 if (end is str.length) return; |
| 238 | 177 String version2 = str[ start .. end ]; |
| 5 | 178 |
| 194 | 179 if (platform.equals("GTK") && version2.equals("1")) { |
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180 return; |
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181 } |
| 5 | 182 } |
| 183 | |
| 184 /** | |
| 185 * Constructs a new font data given a font name, | |
| 186 * the height of the desired font in points, | |
| 187 * and a font style. | |
| 188 * | |
| 189 * @param name the name of the font (must not be null) | |
| 190 * @param height the font height in points | |
| 191 * @param style a bit or combination of NORMAL, BOLD, ITALIC | |
| 192 * | |
| 193 * @exception IllegalArgumentException <ul> | |
| 194 * <li>ERROR_NULL_ARGUMENT - when the font name is null</li> | |
| 195 * <li>ERROR_INVALID_ARGUMENT - if the height is negative</li> | |
| 196 * </ul> | |
| 197 */ | |
| 238 | 198 public this(String name, int height, int style) { |
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199 setName(name); |
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200 setHeight(height); |
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201 setStyle(style); |
| 5 | 202 } |
| 203 | |
| 238 | 204 /*public*/ this(String name, float height, int style) { |
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205 setName(name); |
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206 setHeight(height); |
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207 setStyle(style); |
| 5 | 208 } |
| 209 | |
| 210 /** | |
| 211 * Compares the argument to the receiver, and returns true | |
| 212 * if they represent the <em>same</em> object using a class | |
| 213 * specific comparison. | |
| 214 * | |
| 215 * @param object the object to compare with this object | |
| 216 * @return <code>true</code> if the object is the same as this object and <code>false</code> otherwise | |
| 217 * | |
| 218 * @see #hashCode | |
| 219 */ | |
| 220 public override int opEquals (Object object) { | |
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221 if (object is this) return true; |
| 5 | 222 if( auto data = cast(FontData)object ){ |
| 194 | 223 return name.equals(data.name) && height is data.height && style is data.style; |
| 5 | 224 } |
| 225 return false; | |
| 226 } | |
| 227 | |
| 228 /** | |
| 229 * Returns the height of the receiver in points. | |
| 230 * | |
| 231 * @return the height of this FontData | |
| 232 * | |
| 233 * @see #setHeight(int) | |
| 234 */ | |
| 235 public int getHeight() { | |
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236 return cast(int)(0.5f + height); |
| 5 | 237 } |
| 238 | |
| 239 /*public*/ float getHeightF() { | |
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240 return height; |
| 5 | 241 } |
| 242 | |
| 243 /** | |
| 244 * Returns the locale of the receiver. | |
| 245 * <p> | |
| 246 * The locale determines which platform character set this | |
| 247 * font is going to use. Widgets and graphics operations that | |
| 248 * use this font will convert UNICODE strings to the platform | |
| 249 * character set of the specified locale. | |
| 250 * </p> | |
| 251 * <p> | |
| 252 * On platforms where there are multiple character sets for a | |
| 253 * given language/country locale, the variant portion of the | |
| 254 * locale will determine the character set. | |
| 255 * </p> | |
| 256 * | |
| 257 * @return the <code>String</code> representing a Locale object | |
| 258 * @since 3.0 | |
| 259 */ | |
| 238 | 260 public String getLocale () { |
| 261 String result; | |
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262 const char sep = '_'; |
| 194 | 263 if (lang !is null) { |
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264 result ~= lang; |
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265 result ~= sep; |
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266 } |
| 194 | 267 if (country !is null) { |
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268 result ~= country; |
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269 result ~= sep; |
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270 } |
| 194 | 271 if (variant !is null) { |
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272 result ~= variant; |
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273 } |
| 5 | 274 |
|
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275 if (result) { |
| 194 | 276 if (result[$-1] is sep) { |
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277 result = result[0 .. $ - 1]; |
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278 } |
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279 } |
| 238 | 280 Trace.formatln( "getLocal {}", result ); |
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281 return result; |
| 5 | 282 } |
| 283 | |
| 284 /** | |
| 285 * Returns the name of the receiver. | |
| 286 * On platforms that support font foundries, the return value will | |
| 287 * be the foundry followed by a dash ("-") followed by the face name. | |
| 288 * | |
| 289 * @return the name of this <code>FontData</code> | |
| 290 * | |
| 291 * @see #setName | |
| 292 */ | |
| 238 | 293 public String getName() { |
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294 return name; |
| 5 | 295 } |
| 296 | |
| 297 /** | |
| 298 * Returns the style of the receiver which is a bitwise OR of | |
| 71 | 299 * one or more of the <code>DWT</code> constants NORMAL, BOLD |
| 5 | 300 * and ITALIC. |
| 301 * | |
| 302 * @return the style of this <code>FontData</code> | |
| 303 * | |
| 304 * @see #setStyle | |
| 305 */ | |
| 306 public int getStyle() { | |
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307 return style; |
| 5 | 308 } |
| 309 | |
| 310 /** | |
| 311 * Returns an integer hash code for the receiver. Any two | |
| 312 * objects that return <code>true</code> when passed to | |
| 313 * <code>equals</code> must return the same value for this | |
| 314 * method. | |
| 315 * | |
| 316 * @return the receiver's hash | |
| 317 * | |
| 318 * @see #equals | |
| 319 */ | |
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320 public override hash_t toHash () { |
| 238 | 321 return typeid(String).getHash(&name) ^ getHeight() ^ style; |
| 5 | 322 } |
| 323 | |
| 324 /** | |
| 325 * Sets the height of the receiver. The parameter is | |
| 326 * specified in terms of points, where a point is one | |
| 327 * seventy-second of an inch. | |
| 328 * | |
| 329 * @param height the height of the <code>FontData</code> | |
| 330 * | |
| 331 * @exception IllegalArgumentException <ul> | |
| 332 * <li>ERROR_INVALID_ARGUMENT - if the height is negative</li> | |
| 333 * </ul> | |
| 334 * | |
| 335 * @see #getHeight | |
| 336 */ | |
| 337 public void setHeight(int height) { | |
| 71 | 338 if (height < 0) DWT.error(DWT.ERROR_INVALID_ARGUMENT); |
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339 this.height = height; |
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340 this.str = null; |
| 5 | 341 } |
| 342 | |
| 343 /*public*/ void setHeight(float height) { | |
| 71 | 344 if (height < 0) DWT.error(DWT.ERROR_INVALID_ARGUMENT); |
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345 this.height = height; |
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346 this.str = null; |
| 5 | 347 } |
| 348 | |
| 349 /** | |
| 350 * Sets the locale of the receiver. | |
| 351 * <p> | |
| 352 * The locale determines which platform character set this | |
| 353 * font is going to use. Widgets and graphics operations that | |
| 354 * use this font will convert UNICODE strings to the platform | |
| 355 * character set of the specified locale. | |
| 356 * </p> | |
| 357 * <p> | |
| 358 * On platforms where there are multiple character sets for a | |
| 359 * given language/country locale, the variant portion of the | |
| 360 * locale will determine the character set. | |
| 361 * </p> | |
| 362 * | |
| 363 * @param locale the <code>String</code> representing a Locale object | |
| 364 * @see java.util.Locale#toString | |
| 365 */ | |
| 238 | 366 public void setLocale(String locale) { |
| 367 Trace.formatln( "setLocal {}", locale ); | |
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368 lang = country = variant = null; |
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369 if (locale !is null) { |
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370 char sep = '_'; |
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371 int length = locale.length; |
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372 int firstSep, secondSep; |
| 5 | 373 |
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374 firstSep = locate( locale, sep ); |
| 194 | 375 if (firstSep is locale.length) { |
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376 firstSep = secondSep = length; |
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377 } else { |
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378 secondSep = locate( locale, sep, firstSep + 1); |
| 194 | 379 if (secondSep is locale.length) secondSep = length; |
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380 } |
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381 if (firstSep > 0) lang = locale[0 .. firstSep]; |
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382 if (secondSep > firstSep + 1) country = locale[firstSep + 1 .. secondSep ]; |
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383 if (length > secondSep + 1) variant = locale[secondSep + 1 .. $ ]; |
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384 } |
| 5 | 385 } |
| 386 | |
| 387 /** | |
| 388 * Sets the name of the receiver. | |
| 389 * <p> | |
| 390 * Some platforms support font foundries. On these platforms, the name | |
| 391 * of the font specified in setName() may have one of the following forms: | |
| 392 * <ol> | |
| 393 * <li>a face name (for example, "courier")</li> | |
| 394 * <li>a foundry followed by a dash ("-") followed by a face name (for example, "adobe-courier")</li> | |
| 395 * </ol> | |
| 396 * In either case, the name returned from getName() will include the | |
| 397 * foundry. | |
| 398 * </p> | |
| 399 * <p> | |
| 400 * On platforms that do not support font foundries, only the face name | |
| 401 * (for example, "courier") is used in <code>setName()</code> and | |
| 402 * <code>getName()</code>. | |
| 403 * </p> | |
| 404 * | |
| 405 * @param name the name of the font data (must not be null) | |
| 406 * @exception IllegalArgumentException <ul> | |
| 407 * <li>ERROR_NULL_ARGUMENT - when the font name is null</li> | |
| 408 * </ul> | |
| 409 * | |
| 410 * @see #getName | |
| 411 */ | |
| 238 | 412 public void setName(String name) { |
| 71 | 413 if (name is null) DWT.error(DWT.ERROR_NULL_ARGUMENT); |
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414 this.name = name; |
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415 this.str = null; |
| 5 | 416 } |
| 417 | |
| 418 /** | |
| 419 * Sets the style of the receiver to the argument which must | |
| 71 | 420 * be a bitwise OR of one or more of the <code>DWT</code> |
| 5 | 421 * constants NORMAL, BOLD and ITALIC. All other style bits are |
| 422 * ignored. | |
| 423 * | |
| 424 * @param style the new style for this <code>FontData</code> | |
| 425 * | |
| 426 * @see #getStyle | |
| 427 */ | |
| 428 public void setStyle(int style) { | |
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429 this.style = style; |
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430 this.str = null; |
| 5 | 431 } |
| 432 | |
| 433 /** | |
| 434 * Returns a string representation of the receiver which is suitable | |
| 435 * for constructing an equivalent instance using the | |
| 436 * <code>FontData(String)</code> constructor. | |
| 437 * | |
| 438 * @return a string representation of the FontData | |
| 439 * | |
| 440 * @see FontData | |
| 441 */ | |
| 238 | 442 public override String toString() { |
| 5 | 443 return Format( "1|{}|{}|{}|GTK|1|", getName, getHeightF, getStyle ); |
| 444 } | |
| 445 | |
| 446 } |