Mercurial > projects > dwt-linux
annotate dwt/graphics/FontData.d @ 364:2bcb17ebe0be default tip
fix: thx torhu
author | Frank Benoit <benoit@tionex.de> |
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date | Sun, 08 Nov 2009 20:57:46 +0100 |
parents | 4bffbf81e2d6 |
children |
rev | line source |
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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; | |
200
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21 import dwt.dwthelper.utils; |
5 | 22 |
23 /** | |
24 * Instances of this class describe operating system fonts. | |
25 * <p> | |
26 * For platform-independent behaviour, use the get and set methods | |
27 * corresponding to the following properties: | |
28 * <dl> | |
29 * <dt>height</dt><dd>the height of the font in points</dd> | |
30 * <dt>name</dt><dd>the face name of the font, which may include the foundry</dd> | |
31 * <dt>style</dt><dd>A bitwise combination of NORMAL, ITALIC and BOLD</dd> | |
32 * </dl> | |
33 * If extra, platform-dependent functionality is required: | |
34 * <ul> | |
35 * <li>On <em>Windows</em>, the data member of the <code>FontData</code> | |
36 * corresponds to a Windows <code>LOGFONT</code> structure whose fields | |
37 * may be retrieved and modified.</li> | |
38 * <li>On <em>X</em>, the fields of the <code>FontData</code> correspond | |
39 * to the entries in the font's XLFD name and may be retrieved and modified. | |
40 * </ul> | |
41 * Application code does <em>not</em> need to explicitly release the | |
42 * resources managed by each instance when those instances are no longer | |
43 * required, and thus no <code>dispose()</code> method is provided. | |
44 * | |
45 * @see Font | |
259 | 46 * @see <a href="http://www.eclipse.org/swt/">Sample code and further information</a> |
5 | 47 */ |
48 public final class FontData { | |
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49 /** |
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50 * the font name |
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51 * (Warning: This field is platform dependent) |
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52 * <p> |
71 | 53 * <b>IMPORTANT:</b> This field is <em>not</em> part of the DWT |
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54 * public API. It is marked public only so that it can be shared |
71 | 55 * within the packages provided by DWT. It is not available on all |
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56 * platforms and should never be accessed from application code. |
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57 * </p> |
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58 */ |
238 | 59 public String name; |
5 | 60 |
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61 /** |
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62 * The height of the font data in points |
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63 * (Warning: This field is platform dependent) |
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64 * <p> |
71 | 65 * <b>IMPORTANT:</b> This field is <em>not</em> part of the DWT |
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66 * public API. It is marked public only so that it can be shared |
71 | 67 * within the packages provided by DWT. It is not available on all |
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68 * platforms and should never be accessed from application code. |
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69 * </p> |
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70 */ |
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71 public float height; |
5 | 72 |
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73 /** |
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74 * the font style |
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75 * (Warning: This field is platform dependent) |
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76 * <p> |
71 | 77 * <b>IMPORTANT:</b> This field is <em>not</em> part of the DWT |
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78 * public API. It is marked public only so that it can be shared |
71 | 79 * within the packages provided by DWT. It is not available on all |
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80 * platforms and should never be accessed from application code. |
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81 * </p> |
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82 */ |
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83 public int style; |
5 | 84 |
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85 /** |
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86 * the Pango string |
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87 * (Warning: This field is platform dependent) |
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88 * <p> |
71 | 89 * <b>IMPORTANT:</b> This field is <em>not</em> part of the DWT |
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90 * public API. It is marked public only so that it can be shared |
71 | 91 * within the packages provided by DWT. It is not available on all |
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92 * platforms and should never be accessed from application code. |
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93 * </p> |
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94 */ |
238 | 95 public String str; |
5 | 96 |
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97 /** |
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98 * The locales of the font |
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99 */ |
238 | 100 String lang, country, variant; |
5 | 101 |
102 /** | |
103 * Constructs a new uninitialized font data. | |
104 */ | |
105 public this () { | |
71 | 106 this("", 12, DWT.NORMAL); |
5 | 107 } |
108 | |
109 /** | |
110 * Constructs a new FontData given a string representation | |
111 * in the form generated by the <code>FontData.toString</code> | |
112 * method. | |
113 * <p> | |
114 * Note that the representation varies between platforms, | |
115 * and a FontData can only be created from a string that was | |
116 * generated on the same platform. | |
117 * </p> | |
118 * | |
119 * @param string the string representation of a <code>FontData</code> (must not be null) | |
120 * | |
121 * @exception IllegalArgumentException <ul> | |
122 * <li>ERROR_NULL_ARGUMENT - if the argument is null</li> | |
123 * <li>ERROR_INVALID_ARGUMENT - if the argument does not represent a valid description</li> | |
124 * </ul> | |
125 * | |
126 * @see #toString | |
127 */ | |
238 | 128 public this(String str) { |
71 | 129 if (str is null) DWT.error(DWT.ERROR_NULL_ARGUMENT); |
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130 int start = 0; |
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131 int end = locate( str, '|' ); |
194 | 132 if (end is str.length ) DWT.error(DWT.ERROR_INVALID_ARGUMENT); |
238 | 133 String version1 = str[ start .. end ]; |
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134 try { |
194 | 135 if (to!(int)(version1) !is 1) DWT.error(DWT.ERROR_INVALID_ARGUMENT); |
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136 } catch (ConversionException e) { |
71 | 137 DWT.error(DWT.ERROR_INVALID_ARGUMENT); |
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138 } |
5 | 139 |
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140 start = end + 1; |
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141 end = locate( str, '|', start ); |
194 | 142 if (end is str.length ) DWT.error(DWT.ERROR_INVALID_ARGUMENT); |
238 | 143 String name = str[start .. end ]; |
5 | 144 |
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145 start = end + 1; |
5 | 146 end = locate( str, '|', start ); |
194 | 147 if (end is str.length ) DWT.error(DWT.ERROR_INVALID_ARGUMENT); |
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148 float height = 0; |
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149 try { |
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150 height = to!(float)(str[start .. end]); |
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151 } catch (ConversionException e) { |
71 | 152 DWT.error(DWT.ERROR_INVALID_ARGUMENT); |
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153 } |
5 | 154 |
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155 start = end + 1; |
5 | 156 end = locate( str, '|', start ); |
194 | 157 if (end is str.length ) DWT.error(DWT.ERROR_INVALID_ARGUMENT); |
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158 int style = 0; |
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159 try { |
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160 style = to!(int)( str[start .. end ]); |
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161 } catch (ConversionException e) { |
71 | 162 DWT.error(DWT.ERROR_INVALID_ARGUMENT); |
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163 } |
5 | 164 |
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165 start = end + 1; |
5 | 166 end = locate( str, '|', start ); |
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167 setName(name); |
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168 setHeight(height); |
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169 setStyle(style); |
194 | 170 if (end is str.length) return; |
238 | 171 String platform = str[ start .. end ]; |
5 | 172 |
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173 start = end + 1; |
5 | 174 end = locate( str, '|', start ); |
194 | 175 if (end is str.length) return; |
238 | 176 String version2 = str[ start .. end ]; |
5 | 177 |
194 | 178 if (platform.equals("GTK") && version2.equals("1")) { |
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179 return; |
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180 } |
5 | 181 } |
182 | |
183 /** | |
184 * Constructs a new font data given a font name, | |
185 * the height of the desired font in points, | |
186 * and a font style. | |
187 * | |
188 * @param name the name of the font (must not be null) | |
189 * @param height the font height in points | |
190 * @param style a bit or combination of NORMAL, BOLD, ITALIC | |
191 * | |
192 * @exception IllegalArgumentException <ul> | |
193 * <li>ERROR_NULL_ARGUMENT - when the font name is null</li> | |
194 * <li>ERROR_INVALID_ARGUMENT - if the height is negative</li> | |
195 * </ul> | |
196 */ | |
238 | 197 public this(String name, int height, int style) { |
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198 setName(name); |
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199 setHeight(height); |
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200 setStyle(style); |
5 | 201 } |
202 | |
238 | 203 /*public*/ this(String name, float height, int style) { |
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204 setName(name); |
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205 setHeight(height); |
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206 setStyle(style); |
5 | 207 } |
208 | |
209 /** | |
210 * Compares the argument to the receiver, and returns true | |
211 * if they represent the <em>same</em> object using a class | |
212 * specific comparison. | |
213 * | |
214 * @param object the object to compare with this object | |
215 * @return <code>true</code> if the object is the same as this object and <code>false</code> otherwise | |
216 * | |
217 * @see #hashCode | |
218 */ | |
219 public override int opEquals (Object object) { | |
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220 if (object is this) return true; |
5 | 221 if( auto data = cast(FontData)object ){ |
194 | 222 return name.equals(data.name) && height is data.height && style is data.style; |
5 | 223 } |
224 return false; | |
225 } | |
226 | |
227 /** | |
228 * Returns the height of the receiver in points. | |
229 * | |
230 * @return the height of this FontData | |
231 * | |
232 * @see #setHeight(int) | |
233 */ | |
234 public int getHeight() { | |
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235 return cast(int)(0.5f + height); |
5 | 236 } |
237 | |
238 /*public*/ float getHeightF() { | |
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239 return height; |
5 | 240 } |
241 | |
242 /** | |
243 * Returns the locale of the receiver. | |
244 * <p> | |
245 * The locale determines which platform character set this | |
246 * font is going to use. Widgets and graphics operations that | |
247 * use this font will convert UNICODE strings to the platform | |
248 * character set of the specified locale. | |
249 * </p> | |
250 * <p> | |
251 * On platforms where there are multiple character sets for a | |
252 * given language/country locale, the variant portion of the | |
253 * locale will determine the character set. | |
254 * </p> | |
255 * | |
256 * @return the <code>String</code> representing a Locale object | |
257 * @since 3.0 | |
258 */ | |
238 | 259 public String getLocale () { |
260 String result; | |
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261 const char sep = '_'; |
194 | 262 if (lang !is null) { |
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263 result ~= lang; |
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264 result ~= sep; |
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265 } |
194 | 266 if (country !is null) { |
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267 result ~= country; |
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268 result ~= sep; |
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269 } |
194 | 270 if (variant !is null) { |
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271 result ~= variant; |
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272 } |
5 | 273 |
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274 if (result) { |
194 | 275 if (result[$-1] is sep) { |
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276 result = result[0 .. $ - 1]; |
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277 } |
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278 } |
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279 getDwtLogger().trace( "getLocal {}", result ); |
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280 return result; |
5 | 281 } |
282 | |
283 /** | |
284 * Returns the name of the receiver. | |
285 * On platforms that support font foundries, the return value will | |
286 * be the foundry followed by a dash ("-") followed by the face name. | |
287 * | |
288 * @return the name of this <code>FontData</code> | |
289 * | |
290 * @see #setName | |
291 */ | |
238 | 292 public String getName() { |
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293 return name; |
5 | 294 } |
295 | |
296 /** | |
297 * Returns the style of the receiver which is a bitwise OR of | |
71 | 298 * one or more of the <code>DWT</code> constants NORMAL, BOLD |
5 | 299 * and ITALIC. |
300 * | |
301 * @return the style of this <code>FontData</code> | |
302 * | |
303 * @see #setStyle | |
304 */ | |
305 public int getStyle() { | |
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306 return style; |
5 | 307 } |
308 | |
309 /** | |
310 * Returns an integer hash code for the receiver. Any two | |
311 * objects that return <code>true</code> when passed to | |
312 * <code>equals</code> must return the same value for this | |
313 * method. | |
314 * | |
315 * @return the receiver's hash | |
316 * | |
317 * @see #equals | |
318 */ | |
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319 public override hash_t toHash () { |
238 | 320 return typeid(String).getHash(&name) ^ getHeight() ^ style; |
5 | 321 } |
322 | |
323 /** | |
324 * Sets the height of the receiver. The parameter is | |
325 * specified in terms of points, where a point is one | |
326 * seventy-second of an inch. | |
327 * | |
328 * @param height the height of the <code>FontData</code> | |
329 * | |
330 * @exception IllegalArgumentException <ul> | |
331 * <li>ERROR_INVALID_ARGUMENT - if the height is negative</li> | |
332 * </ul> | |
333 * | |
334 * @see #getHeight | |
335 */ | |
336 public void setHeight(int height) { | |
71 | 337 if (height < 0) DWT.error(DWT.ERROR_INVALID_ARGUMENT); |
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338 this.height = height; |
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339 this.str = null; |
5 | 340 } |
341 | |
342 /*public*/ void setHeight(float height) { | |
71 | 343 if (height < 0) DWT.error(DWT.ERROR_INVALID_ARGUMENT); |
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344 this.height = height; |
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345 this.str = null; |
5 | 346 } |
347 | |
348 /** | |
349 * Sets the locale of the receiver. | |
350 * <p> | |
351 * The locale determines which platform character set this | |
352 * font is going to use. Widgets and graphics operations that | |
353 * use this font will convert UNICODE strings to the platform | |
354 * character set of the specified locale. | |
355 * </p> | |
356 * <p> | |
357 * On platforms where there are multiple character sets for a | |
358 * given language/country locale, the variant portion of the | |
359 * locale will determine the character set. | |
360 * </p> | |
361 * | |
362 * @param locale the <code>String</code> representing a Locale object | |
363 * @see java.util.Locale#toString | |
364 */ | |
238 | 365 public void setLocale(String locale) { |
361
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366 getDwtLogger().trace( "setLocal {}", 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; |
5 | 372 |
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373 firstSep = locate( locale, sep ); |
194 | 374 if (firstSep is locale.length) { |
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375 firstSep = secondSep = length; |
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376 } else { |
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377 secondSep = locate( locale, sep, firstSep + 1); |
194 | 378 if (secondSep is locale.length) secondSep = length; |
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379 } |
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380 if (firstSep > 0) lang = locale[0 .. firstSep]; |
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381 if (secondSep > firstSep + 1) country = locale[firstSep + 1 .. secondSep ]; |
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382 if (length > secondSep + 1) variant = locale[secondSep + 1 .. $ ]; |
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383 } |
5 | 384 } |
385 | |
386 /** | |
387 * Sets the name of the receiver. | |
388 * <p> | |
389 * Some platforms support font foundries. On these platforms, the name | |
390 * of the font specified in setName() may have one of the following forms: | |
391 * <ol> | |
392 * <li>a face name (for example, "courier")</li> | |
393 * <li>a foundry followed by a dash ("-") followed by a face name (for example, "adobe-courier")</li> | |
394 * </ol> | |
395 * In either case, the name returned from getName() will include the | |
396 * foundry. | |
397 * </p> | |
398 * <p> | |
399 * On platforms that do not support font foundries, only the face name | |
400 * (for example, "courier") is used in <code>setName()</code> and | |
401 * <code>getName()</code>. | |
402 * </p> | |
403 * | |
404 * @param name the name of the font data (must not be null) | |
405 * @exception IllegalArgumentException <ul> | |
406 * <li>ERROR_NULL_ARGUMENT - when the font name is null</li> | |
407 * </ul> | |
408 * | |
409 * @see #getName | |
410 */ | |
238 | 411 public void setName(String name) { |
71 | 412 if (name is null) DWT.error(DWT.ERROR_NULL_ARGUMENT); |
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413 this.name = name; |
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414 this.str = null; |
5 | 415 } |
416 | |
417 /** | |
418 * Sets the style of the receiver to the argument which must | |
71 | 419 * be a bitwise OR of one or more of the <code>DWT</code> |
5 | 420 * constants NORMAL, BOLD and ITALIC. All other style bits are |
421 * ignored. | |
422 * | |
423 * @param style the new style for this <code>FontData</code> | |
424 * | |
425 * @see #getStyle | |
426 */ | |
427 public void setStyle(int style) { | |
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428 this.style = style; |
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429 this.str = null; |
5 | 430 } |
431 | |
432 /** | |
433 * Returns a string representation of the receiver which is suitable | |
434 * for constructing an equivalent instance using the | |
435 * <code>FontData(String)</code> constructor. | |
436 * | |
437 * @return a string representation of the FontData | |
438 * | |
439 * @see FontData | |
440 */ | |
238 | 441 public override String toString() { |
5 | 442 return Format( "1|{}|{}|{}|GTK|1|", getName, getHeightF, getStyle ); |
443 } | |
444 | |
445 } |