Mercurial > projects > dwt-win
annotate dwt/graphics/TextLayout.d @ 212:ab60f3309436
reverted the char[] to String and use the an alias.
| author | Frank Benoit <benoit@tionex.de> |
|---|---|
| date | Mon, 05 May 2008 00:12:38 +0200 |
| parents | f8001bf383d2 |
| children | 36f5cb12e1a2 |
| rev | line source |
|---|---|
| 29 | 1 /******************************************************************************* |
| 2 * Copyright (c) 2000, 2007 IBM Corporation and others. | |
| 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 | |
|
31
92c102dd64a3
Added all widgets modules as dummy. Most modules of accessible are equal to the linux version, except Accessible.
Frank Benoit <benoit@tionex.de>
parents:
30
diff
changeset
|
10 * Port to the D programming language: |
|
92c102dd64a3
Added all widgets modules as dummy. Most modules of accessible are equal to the linux version, except Accessible.
Frank Benoit <benoit@tionex.de>
parents:
30
diff
changeset
|
11 * Frank Benoit <benoit@tionex.de> |
| 29 | 12 *******************************************************************************/ |
| 13 module dwt.graphics.TextLayout; | |
| 14 | |
| 15 import dwt.DWT; | |
| 16 import dwt.DWTException; | |
| 17 import dwt.internal.Compatibility; | |
| 18 import dwt.internal.gdip.Gdip; | |
| 19 import dwt.internal.win32.OS; | |
| 20 | |
| 21 import dwt.graphics.Color; | |
| 22 import dwt.graphics.Device; | |
| 23 import dwt.graphics.Font; | |
| 24 import dwt.graphics.FontMetrics; | |
| 25 import dwt.graphics.GC; | |
| 26 import dwt.graphics.GCData; | |
| 27 import dwt.graphics.GlyphMetrics; | |
| 28 import dwt.graphics.Point; | |
| 29 import dwt.graphics.Rectangle; | |
| 30 import dwt.graphics.Region; | |
| 31 import dwt.graphics.Resource; | |
| 32 import dwt.graphics.TextStyle; | |
| 33 | |
| 34 import tango.text.convert.Format; | |
| 35 import dwt.dwthelper.utils; | |
| 30 | 36 import dwt.dwthelper.System; |
| 29 | 37 |
| 38 /** | |
| 39 * <code>TextLayout</code> is a graphic object that represents | |
| 40 * styled text. | |
| 41 * <p> | |
| 42 * Instances of this class provide support for drawing, cursor | |
| 43 * navigation, hit testing, text wrapping, alignment, tab expansion | |
| 44 * line breaking, etc. These are aspects required for rendering internationalized text. | |
| 45 * </p><p> | |
| 46 * Application code must explicitly invoke the <code>TextLayout#dispose()</code> | |
| 47 * method to release the operating system resources managed by each instance | |
| 48 * when those instances are no longer required. | |
| 49 * </p> | |
| 50 * | |
| 51 * @since 3.0 | |
| 52 */ | |
| 53 public final class TextLayout : Resource { | |
| 54 Font font; | |
|
212
ab60f3309436
reverted the char[] to String and use the an alias.
Frank Benoit <benoit@tionex.de>
parents:
157
diff
changeset
|
55 String text, segmentsText; |
| 29 | 56 int lineSpacing; |
| 57 int ascent, descent; | |
| 58 int alignment; | |
| 59 int wrapWidth; | |
| 60 int orientation; | |
| 61 int indent; | |
| 62 bool justify; | |
| 63 int[] tabs; | |
| 64 int[] segments; | |
| 65 StyleItem[] styles; | |
| 66 | |
| 67 StyleItem[] allRuns; | |
| 68 StyleItem[][] runs; | |
| 69 int[] lineOffset, lineY, lineWidth; | |
| 30 | 70 void* mLangFontLink2; |
| 29 | 71 |
| 72 static const wchar LTR_MARK = '\u200E', RTL_MARK = '\u200F'; | |
| 73 static const int SCRIPT_VISATTR_SIZEOF = 2; | |
| 74 static const int GOFFSET_SIZEOF = 8; | |
| 80 | 75 private static byte[16] CLSID_CMultiLanguage; |
| 76 private static byte[16] IID_IMLangFontLink2; | |
| 77 private static bool static_this_completed = false; | |
| 78 private static void static_this() { | |
| 79 // in case of allready initialized, we can check and leave without lock | |
| 80 if( static_this_completed ){ | |
| 81 return; | |
| 82 } | |
| 83 synchronized { | |
| 84 if( !static_this_completed ){ | |
| 85 OS.IIDFromString("{275c23e2-3747-11d0-9fea-00aa003f8646}\0".toCharArray().ptr, CLSID_CMultiLanguage.ptr); | |
| 86 OS.IIDFromString("{DCCFC162-2B38-11d2-B7EC-00C04F8F5D9A}\0".toCharArray().ptr, IID_IMLangFontLink2.ptr); | |
| 87 static_this_completed = true; | |
| 88 } | |
| 89 } | |
| 29 | 90 } |
| 91 | |
| 92 class StyleItem { | |
| 93 TextStyle style; | |
| 94 int start, length; | |
| 95 bool lineBreak, softBreak, tab; | |
| 96 | |
| 97 /*Script cache and analysis */ | |
| 98 SCRIPT_ANALYSIS analysis; | |
| 99 SCRIPT_CACHE* psc; | |
| 100 | |
| 101 /*Shape info (malloc when the run is shaped) */ | |
| 102 WORD* glyphs; | |
| 103 int glyphCount; | |
| 104 WORD* clusters; | |
| 105 SCRIPT_VISATTR* visAttrs; | |
| 106 | |
| 107 /*Place info (malloc when the run is placed) */ | |
| 108 int* advances; | |
| 30 | 109 GOFFSET* goffsets; |
| 110 int width; | |
| 111 int ascent; | |
| 112 int descent; | |
| 113 int leading; | |
| 114 int x; | |
| 29 | 115 |
| 116 /* Justify info (malloc during computeRuns) */ | |
| 117 int* justify; | |
| 118 | |
| 119 /* ScriptBreak */ | |
| 120 SCRIPT_LOGATTR* psla; | |
| 121 | |
| 30 | 122 HFONT fallbackFont; |
| 29 | 123 |
| 124 void free() { | |
| 125 auto hHeap = OS.GetProcessHeap(); | |
| 126 if (psc !is null) { | |
| 127 OS.ScriptFreeCache (psc); | |
| 128 OS.HeapFree(hHeap, 0, psc); | |
| 129 psc = null; | |
| 130 } | |
| 131 if (glyphs !is null) { | |
| 132 OS.HeapFree(hHeap, 0, glyphs); | |
| 133 glyphs = null; | |
| 134 glyphCount = 0; | |
| 135 } | |
| 136 if (clusters !is null) { | |
| 137 OS.HeapFree(hHeap, 0, clusters); | |
| 138 clusters = null; | |
| 139 } | |
| 140 if (visAttrs !is null) { | |
| 141 OS.HeapFree(hHeap, 0, visAttrs); | |
| 142 visAttrs = null; | |
| 143 } | |
| 144 if (advances !is null) { | |
| 145 OS.HeapFree(hHeap, 0, advances); | |
| 146 advances = null; | |
| 147 } | |
| 148 if (goffsets !is null) { | |
| 149 OS.HeapFree(hHeap, 0, goffsets); | |
| 150 goffsets = null; | |
| 151 } | |
| 152 if (justify !is null) { | |
| 153 OS.HeapFree(hHeap, 0, justify); | |
| 154 justify = null; | |
| 155 } | |
| 156 if (psla !is null) { | |
| 157 OS.HeapFree(hHeap, 0, psla); | |
| 158 psla = null; | |
| 159 } | |
| 160 if (fallbackFont !is null) { | |
| 30 | 161 if (mLangFontLink2 !is null) { |
| 29 | 162 /* ReleaseFont() */ |
| 30 | 163 OS.VtblCall(8, mLangFontLink2, cast(int)fallbackFont); |
| 29 | 164 } |
| 165 fallbackFont = null; | |
| 166 } | |
| 30 | 167 width = 0; |
| 168 ascent = 0; | |
| 169 descent = 0; | |
| 170 x = 0; | |
| 29 | 171 lineBreak = softBreak = false; |
| 172 } | |
|
212
ab60f3309436
reverted the char[] to String and use the an alias.
Frank Benoit <benoit@tionex.de>
parents:
157
diff
changeset
|
173 override public String toString () { |
| 29 | 174 return Format( "StyleItem {{{}, {}}", start, style ); |
| 175 } | |
| 176 } | |
| 177 | |
| 178 /** | |
| 179 * Constructs a new instance of this class on the given device. | |
| 180 * <p> | |
| 181 * You must dispose the text layout when it is no longer required. | |
| 182 * </p> | |
| 183 * | |
| 184 * @param device the device on which to allocate the text layout | |
| 185 * | |
| 186 * @exception IllegalArgumentException <ul> | |
| 187 * <li>ERROR_NULL_ARGUMENT - if device is null and there is no current device</li> | |
| 188 * </ul> | |
| 189 * | |
| 190 * @see #dispose() | |
| 191 */ | |
| 192 public this (Device device) { | |
| 80 | 193 static_this(); |
| 29 | 194 if (device is null) device = Device.getDevice(); |
| 195 if (device is null) DWT.error(DWT.ERROR_NULL_ARGUMENT); | |
| 196 this.device = device; | |
| 197 wrapWidth = ascent = descent = -1; | |
| 198 lineSpacing = 0; | |
| 199 orientation = DWT.LEFT_TO_RIGHT; | |
| 200 styles = new StyleItem[2]; | |
| 201 styles[0] = new StyleItem(); | |
| 202 styles[1] = new StyleItem(); | |
| 203 text = ""; //$NON-NLS-1$ | |
| 30 | 204 void* ppv; |
| 205 OS.OleInitialize(null); | |
| 206 if (OS.CoCreateInstance(CLSID_CMultiLanguage.ptr, null, OS.CLSCTX_INPROC_SERVER, IID_IMLangFontLink2.ptr, cast(void*)&ppv) is OS.S_OK) { | |
| 207 mLangFontLink2 = ppv; | |
| 29 | 208 } |
| 209 if (device.tracking) device.new_Object(this); | |
| 210 } | |
| 211 | |
| 212 void breakRun(StyleItem run) { | |
| 30 | 213 if (run.psla !is null) return; |
| 59 | 214 wchar[] chars = StrToWCHARs( 0, segmentsText[ run.start .. run.start + run.length ] ); |
| 30 | 215 auto hHeap = OS.GetProcessHeap(); |
| 216 run.psla = cast(SCRIPT_LOGATTR*)OS.HeapAlloc(hHeap, OS.HEAP_ZERO_MEMORY, SCRIPT_LOGATTR.sizeof * chars.length); | |
| 217 if (run.psla is null) DWT.error(DWT.ERROR_NO_HANDLES); | |
| 218 OS.ScriptBreak(chars.ptr, chars.length, &run.analysis, run.psla); | |
| 29 | 219 } |
| 220 | |
| 30 | 221 void checkItem (HDC hDC, StyleItem item) { |
| 222 if (item.fallbackFont !is null) { | |
| 29 | 223 /* |
| 224 * Feature in Windows. The fallback font returned by the MLang service | |
| 225 * can be disposed by some other client running in the same thread. | |
| 226 * For example, disposing a Browser widget internally releases all fonts | |
| 227 * in the MLang cache. The fix is to use GetObject() to detect if the | |
| 228 * font was disposed and reshape the run. | |
| 229 */ | |
| 230 LOGFONT logFont; | |
| 30 | 231 if (OS.GetObject( item.fallbackFont, LOGFONT.sizeof, &logFont) is 0) { |
| 29 | 232 item.free(); |
| 233 OS.SelectObject(hDC, getItemFont(item)); | |
| 234 shape(hDC, item); | |
| 235 } | |
| 236 } | |
| 237 } | |
| 238 | |
| 239 void checkLayout () { | |
| 240 if (isDisposed()) DWT.error(DWT.ERROR_GRAPHIC_DISPOSED); | |
| 241 } | |
| 242 | |
| 243 /* | |
| 244 * Compute the runs: itemize, shape, place, and reorder the runs. | |
| 245 * Break paragraphs into lines, wraps the text, and initialize caches. | |
| 246 */ | |
| 247 void computeRuns (GC gc) { | |
| 248 if (runs !is null) return; | |
| 30 | 249 auto hDC = gc !is null ? gc.handle : device.internal_new_GC(null); |
| 250 auto srcHdc = OS.CreateCompatibleDC(hDC); | |
| 29 | 251 allRuns = itemize(); |
| 252 for (int i=0; i<allRuns.length - 1; i++) { | |
| 253 StyleItem run = allRuns[i]; | |
| 254 OS.SelectObject(srcHdc, getItemFont(run)); | |
| 255 shape(srcHdc, run); | |
| 256 } | |
| 30 | 257 SCRIPT_LOGATTR* logAttr; |
| 258 SCRIPT_PROPERTIES* properties; | |
| 29 | 259 int lineWidth = indent, lineStart = 0, lineCount = 1; |
| 260 for (int i=0; i<allRuns.length - 1; i++) { | |
| 261 StyleItem run = allRuns[i]; | |
| 262 if (run.length is 1) { | |
| 263 char ch = segmentsText.charAt(run.start); | |
| 264 switch (ch) { | |
| 265 case '\t': { | |
| 266 run.tab = true; | |
| 267 if (tabs is null) break; | |
| 268 int tabsLength = tabs.length, j; | |
| 269 for (j = 0; j < tabsLength; j++) { | |
| 270 if (tabs[j] > lineWidth) { | |
| 271 run.width = tabs[j] - lineWidth; | |
| 272 break; | |
| 273 } | |
| 274 } | |
| 275 if (j is tabsLength) { | |
| 276 int tabX = tabs[tabsLength-1]; | |
| 277 int lastTabWidth = tabsLength > 1 ? tabs[tabsLength-1] - tabs[tabsLength-2] : tabs[0]; | |
| 278 if (lastTabWidth > 0) { | |
| 279 while (tabX <= lineWidth) tabX += lastTabWidth; | |
| 280 run.width = tabX - lineWidth; | |
| 281 } | |
| 282 } | |
| 283 break; | |
| 284 } | |
| 285 case '\n': { | |
| 286 run.lineBreak = true; | |
| 287 break; | |
| 288 } | |
| 289 case '\r': { | |
| 290 run.lineBreak = true; | |
| 291 StyleItem next = allRuns[i + 1]; | |
| 292 if (next.length !is 0 && segmentsText.charAt(next.start) is '\n') { | |
| 293 run.length += 1; | |
| 294 next.free(); | |
| 295 i++; | |
| 296 } | |
| 297 break; | |
| 298 } | |
| 81 | 299 default: |
| 29 | 300 } |
| 301 } | |
| 302 if (wrapWidth !is -1 && lineWidth + run.width > wrapWidth && !run.tab) { | |
| 303 int start = 0; | |
| 304 int[] piDx = new int[run.length]; | |
| 305 if (run.style !is null && run.style.metrics !is null) { | |
| 306 piDx[0] = run.width; | |
| 307 } else { | |
| 30 | 308 OS.ScriptGetLogicalWidths(&run.analysis, run.length, run.glyphCount, run.advances, run.clusters, run.visAttrs, piDx.ptr); |
| 29 | 309 } |
| 310 int width = 0, maxWidth = wrapWidth - lineWidth; | |
| 311 while (width + piDx[start] < maxWidth) { | |
| 312 width += piDx[start++]; | |
| 313 } | |
| 314 int firstStart = start; | |
| 315 int firstIndice = i; | |
| 316 while (i >= lineStart) { | |
| 317 breakRun(run); | |
| 318 while (start >= 0) { | |
| 30 | 319 logAttr = run.psla + start; |
| 320 //OS.MoveMemory(logAttr, run.psla + (start * SCRIPT_LOGATTR.sizeof), SCRIPT_LOGATTR.sizeof); | |
| 29 | 321 if (logAttr.fSoftBreak || logAttr.fWhiteSpace) break; |
| 322 start--; | |
| 323 } | |
| 324 | |
| 325 /* | |
| 326 * Bug in Windows. For some reason Uniscribe sets the fSoftBreak flag for the first letter | |
| 327 * after a letter with an accent. This cause a break line to be set in the middle of a word. | |
| 328 * The fix is to detect the case and ignore fSoftBreak forcing the algorithm keep searching. | |
| 329 */ | |
| 330 if (start is 0 && i !is lineStart && !run.tab) { | |
| 331 if (logAttr.fSoftBreak && !logAttr.fWhiteSpace) { | |
| 30 | 332 properties = device.scripts[run.analysis.eScript]; |
| 333 //OS.MoveMemory(properties, device.scripts[run.analysis.eScript], SCRIPT_PROPERTIES.sizeof); | |
| 29 | 334 int langID = properties.langid; |
| 335 StyleItem pRun = allRuns[i - 1]; | |
| 30 | 336 //OS.MoveMemory(properties, device.scripts[pRun.analysis.eScript], SCRIPT_PROPERTIES.sizeof); |
| 29 | 337 if (properties.langid is langID || langID is OS.LANG_NEUTRAL || properties.langid is OS.LANG_NEUTRAL) { |
| 338 breakRun(pRun); | |
| 30 | 339 logAttr = pRun.psla + (pRun.length - 1); |
| 340 //OS.MoveMemory(logAttr, pRun.psla + ((pRun.length - 1) * SCRIPT_LOGATTR.sizeof), SCRIPT_LOGATTR.sizeof); | |
| 29 | 341 if (!logAttr.fWhiteSpace) start = -1; |
| 342 } | |
| 343 } | |
| 344 } | |
| 345 if (start >= 0 || i is lineStart) break; | |
| 346 run = allRuns[--i]; | |
| 347 start = run.length - 1; | |
| 348 } | |
| 349 if (start is 0 && i !is lineStart && !run.tab) { | |
| 350 run = allRuns[--i]; | |
| 351 } else if (start <= 0 && i is lineStart) { | |
| 352 i = firstIndice; | |
| 353 run = allRuns[i]; | |
| 354 start = Math.max(1, firstStart); | |
| 355 } | |
| 356 breakRun(run); | |
| 357 while (start < run.length) { | |
| 30 | 358 logAttr = run.psla + start; |
| 359 //OS.MoveMemory(logAttr, run.psla + (start * SCRIPT_LOGATTR.sizeof), SCRIPT_LOGATTR.sizeof); | |
| 29 | 360 if (!logAttr.fWhiteSpace) break; |
| 361 start++; | |
| 362 } | |
| 363 if (0 < start && start < run.length) { | |
| 364 StyleItem newRun = new StyleItem(); | |
| 365 newRun.start = run.start + start; | |
| 366 newRun.length = run.length - start; | |
| 367 newRun.style = run.style; | |
| 368 newRun.analysis = run.analysis; | |
| 369 run.free(); | |
| 370 run.length = start; | |
| 371 OS.SelectObject(srcHdc, getItemFont(run)); | |
| 372 shape (srcHdc, run); | |
| 373 OS.SelectObject(srcHdc, getItemFont(newRun)); | |
| 374 shape (srcHdc, newRun); | |
| 375 StyleItem[] newAllRuns = new StyleItem[allRuns.length + 1]; | |
| 376 System.arraycopy(allRuns, 0, newAllRuns, 0, i + 1); | |
| 377 System.arraycopy(allRuns, i + 1, newAllRuns, i + 2, allRuns.length - i - 1); | |
| 378 allRuns = newAllRuns; | |
| 379 allRuns[i + 1] = newRun; | |
| 380 } | |
| 381 if (i !is allRuns.length - 2) { | |
| 382 run.softBreak = run.lineBreak = true; | |
| 383 } | |
| 384 } | |
| 385 lineWidth += run.width; | |
| 386 if (run.lineBreak) { | |
| 387 lineStart = i + 1; | |
| 388 lineWidth = run.softBreak ? 0 : indent; | |
| 389 lineCount++; | |
| 390 } | |
| 391 } | |
| 392 lineWidth = 0; | |
| 30 | 393 runs = new StyleItem[][](lineCount); |
| 29 | 394 lineOffset = new int[lineCount + 1]; |
| 395 lineY = new int[lineCount + 1]; | |
| 396 this.lineWidth = new int[lineCount]; | |
| 397 int lineRunCount = 0, line = 0; | |
| 398 int ascent = Math.max(0, this.ascent); | |
| 399 int descent = Math.max(0, this.descent); | |
| 400 StyleItem[] lineRuns = new StyleItem[allRuns.length]; | |
| 401 for (int i=0; i<allRuns.length; i++) { | |
| 402 StyleItem run = allRuns[i]; | |
| 403 lineRuns[lineRunCount++] = run; | |
| 404 lineWidth += run.width; | |
| 405 ascent = Math.max(ascent, run.ascent); | |
| 406 descent = Math.max(descent, run.descent); | |
| 407 if (run.lineBreak || i is allRuns.length - 1) { | |
| 408 /* Update the run metrics if the last run is a hard break. */ | |
| 409 if (lineRunCount is 1 && i is allRuns.length - 1) { | |
| 410 TEXTMETRIC lptm; | |
| 411 OS.SelectObject(srcHdc, getItemFont(run)); | |
| 412 OS.GetTextMetrics(srcHdc, &lptm); | |
| 413 run.ascent = lptm.tmAscent; | |
| 414 run.descent = lptm.tmDescent; | |
| 415 ascent = Math.max(ascent, run.ascent); | |
| 416 descent = Math.max(descent, run.descent); | |
| 417 } | |
| 418 runs[line] = new StyleItem[lineRunCount]; | |
| 419 System.arraycopy(lineRuns, 0, runs[line], 0, lineRunCount); | |
| 420 | |
| 421 if (justify && wrapWidth !is -1 && run.softBreak && lineWidth > 0) { | |
| 422 if (line is 0) { | |
| 423 lineWidth += indent; | |
| 424 } else { | |
| 425 StyleItem[] previousLine = runs[line - 1]; | |
| 426 StyleItem previousRun = previousLine[previousLine.length - 1]; | |
| 427 if (previousRun.lineBreak && !previousRun.softBreak) { | |
| 428 lineWidth += indent; | |
| 429 } | |
| 430 } | |
| 30 | 431 auto hHeap = OS.GetProcessHeap(); |
| 29 | 432 int newLineWidth = 0; |
| 433 for (int j = 0; j < runs[line].length; j++) { | |
| 434 StyleItem item = runs[line][j]; | |
| 435 int iDx = item.width * wrapWidth / lineWidth; | |
| 436 if (iDx !is item.width) { | |
| 30 | 437 item.justify = cast(int*)OS.HeapAlloc(hHeap, OS.HEAP_ZERO_MEMORY, item.glyphCount * 4); |
| 438 if (item.justify is null) DWT.error(DWT.ERROR_NO_HANDLES); | |
| 29 | 439 OS.ScriptJustify(item.visAttrs, item.advances, item.glyphCount, iDx - item.width, 2, item.justify); |
| 440 item.width = iDx; | |
| 441 } | |
| 442 newLineWidth += item.width; | |
| 443 } | |
| 444 lineWidth = newLineWidth; | |
| 445 } | |
| 446 this.lineWidth[line] = lineWidth; | |
| 447 | |
| 448 StyleItem lastRun = runs[line][lineRunCount - 1]; | |
| 449 int lastOffset = lastRun.start + lastRun.length; | |
| 450 runs[line] = reorder(runs[line], i is allRuns.length - 1); | |
| 451 lastRun = runs[line][lineRunCount - 1]; | |
| 452 if (run.softBreak && run !is lastRun) { | |
| 453 run.softBreak = run.lineBreak = false; | |
| 454 lastRun.softBreak = lastRun.lineBreak = true; | |
| 455 } | |
| 456 | |
| 457 lineWidth = getLineIndent(line); | |
| 458 for (int j = 0; j < runs[line].length; j++) { | |
| 459 runs[line][j].x = lineWidth; | |
| 460 lineWidth += runs[line][j].width; | |
| 461 } | |
| 462 line++; | |
| 463 lineY[line] = lineY[line - 1] + ascent + descent + lineSpacing; | |
| 464 lineOffset[line] = lastOffset; | |
| 465 lineRunCount = lineWidth = 0; | |
| 466 ascent = Math.max(0, this.ascent); | |
| 467 descent = Math.max(0, this.descent); | |
| 468 } | |
| 469 } | |
| 30 | 470 if (srcHdc !is null) OS.DeleteDC(srcHdc); |
| 29 | 471 if (gc is null) device.internal_dispose_GC(hDC, null); |
| 472 } | |
| 473 | |
| 474 /** | |
| 475 * Disposes of the operating system resources associated with | |
| 476 * the text layout. Applications must dispose of all allocated text layouts. | |
| 477 */ | |
|
48
9a64a7781bab
Added override and alias, first chunk. Thanks torhu for doing this patch.
Frank Benoit <benoit@tionex.de>
parents:
31
diff
changeset
|
478 override public void dispose () { |
| 29 | 479 if (device is null) return; |
| 480 freeRuns(); | |
| 481 font = null; | |
| 482 text = null; | |
| 483 segmentsText = null; | |
| 484 tabs = null; | |
| 485 styles = null; | |
| 486 runs = null; | |
| 487 lineOffset = null; | |
| 488 lineY = null; | |
| 489 lineWidth = null; | |
| 30 | 490 if (mLangFontLink2 !is null) { |
| 29 | 491 /* Release() */ |
| 492 OS.VtblCall(2, mLangFontLink2); | |
| 30 | 493 mLangFontLink2 = null; |
| 29 | 494 } |
| 495 OS.OleUninitialize(); | |
| 496 if (device.tracking) device.dispose_Object(this); | |
| 497 device = null; | |
| 498 } | |
| 499 | |
| 500 /** | |
| 501 * Draws the receiver's text using the specified GC at the specified | |
| 502 * point. | |
| 503 * | |
| 504 * @param gc the GC to draw | |
| 505 * @param x the x coordinate of the top left corner of the rectangular area where the text is to be drawn | |
| 506 * @param y the y coordinate of the top left corner of the rectangular area where the text is to be drawn | |
| 507 * | |
| 508 * @exception DWTException <ul> | |
| 509 * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> | |
| 510 * </ul> | |
| 511 * @exception IllegalArgumentException <ul> | |
| 512 * <li>ERROR_NULL_ARGUMENT - if the gc is null</li> | |
| 513 * </ul> | |
| 514 */ | |
| 515 public void draw (GC gc, int x, int y) { | |
| 516 draw(gc, x, y, -1, -1, null, null); | |
| 517 } | |
| 518 | |
| 519 /** | |
| 520 * Draws the receiver's text using the specified GC at the specified | |
| 521 * point. | |
| 522 * | |
| 523 * @param gc the GC to draw | |
| 524 * @param x the x coordinate of the top left corner of the rectangular area where the text is to be drawn | |
| 525 * @param y the y coordinate of the top left corner of the rectangular area where the text is to be drawn | |
| 526 * @param selectionStart the offset where the selections starts, or -1 indicating no selection | |
| 527 * @param selectionEnd the offset where the selections ends, or -1 indicating no selection | |
| 528 * @param selectionForeground selection foreground, or NULL to use the system default color | |
| 529 * @param selectionBackground selection background, or NULL to use the system default color | |
| 530 * | |
| 531 * @exception DWTException <ul> | |
| 532 * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> | |
| 533 * </ul> | |
| 534 * @exception IllegalArgumentException <ul> | |
| 535 * <li>ERROR_NULL_ARGUMENT - if the gc is null</li> | |
| 536 * </ul> | |
| 537 */ | |
| 538 public void draw (GC gc, int x, int y, int selectionStart, int selectionEnd, Color selectionForeground, Color selectionBackground) { | |
| 539 draw(gc, x, y, selectionStart, selectionEnd, selectionForeground, selectionBackground, 0); | |
| 540 } | |
| 541 | |
| 542 /** | |
| 543 * Draws the receiver's text using the specified GC at the specified | |
| 544 * point. | |
| 545 * <p> | |
| 546 * The parameter <code>flags</code> can include one of <code>DWT.DELIMITER_SELECTION</code> | |
| 547 * or <code>DWT.FULL_SELECTION</code> to specify the selection behavior on all lines except | |
| 548 * for the last line, and can also include <code>DWT.LAST_LINE_SELECTION</code> to extend | |
| 549 * the specified selection behavior to the last line. | |
| 550 * </p> | |
| 551 * @param gc the GC to draw | |
| 552 * @param x the x coordinate of the top left corner of the rectangular area where the text is to be drawn | |
| 553 * @param y the y coordinate of the top left corner of the rectangular area where the text is to be drawn | |
| 554 * @param selectionStart the offset where the selections starts, or -1 indicating no selection | |
| 555 * @param selectionEnd the offset where the selections ends, or -1 indicating no selection | |
| 556 * @param selectionForeground selection foreground, or NULL to use the system default color | |
| 557 * @param selectionBackground selection background, or NULL to use the system default color | |
| 558 * @param flags drawing options | |
| 559 * | |
| 560 * @exception DWTException <ul> | |
| 561 * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> | |
| 562 * </ul> | |
| 563 * @exception IllegalArgumentException <ul> | |
| 564 * <li>ERROR_NULL_ARGUMENT - if the gc is null</li> | |
| 565 * </ul> | |
| 566 * | |
| 567 * @since 3.3 | |
| 568 */ | |
| 569 public void draw (GC gc, int x, int y, int selectionStart, int selectionEnd, Color selectionForeground, Color selectionBackground, int flags) { | |
| 570 checkLayout(); | |
| 571 computeRuns(gc); | |
| 572 if (gc is null) DWT.error(DWT.ERROR_NULL_ARGUMENT); | |
| 573 if (gc.isDisposed()) DWT.error(DWT.ERROR_INVALID_ARGUMENT); | |
| 574 if (selectionForeground !is null && selectionForeground.isDisposed()) DWT.error(DWT.ERROR_INVALID_ARGUMENT); | |
| 575 if (selectionBackground !is null && selectionBackground.isDisposed()) DWT.error(DWT.ERROR_INVALID_ARGUMENT); | |
| 30 | 576 int length = text.length; |
| 29 | 577 if (length is 0 && flags is 0) return; |
| 30 | 578 auto hdc = gc.handle; |
| 29 | 579 Rectangle clip = gc.getClipping(); |
| 580 GCData data = gc.data; | |
| 30 | 581 auto gdipGraphics = data.gdipGraphics; |
| 582 auto foreground = data.foreground; | |
| 583 auto alpha = data.alpha; | |
| 584 bool gdip = gdipGraphics !is null && (alpha !is 0xFF || data.foregroundPattern !is null); | |
| 585 HRGN clipRgn; | |
| 29 | 586 float[] lpXform = null; |
| 30 | 587 Gdip.Rect gdipRect; |
| 588 if (gdipGraphics !is null && !gdip) { | |
| 589 auto matrix = Gdip.Matrix_new(1, 0, 0, 1, 0, 0); | |
| 590 if (matrix is null) DWT.error(DWT.ERROR_NO_HANDLES); | |
| 29 | 591 Gdip.Graphics_GetTransform(gdipGraphics, matrix); |
| 30 | 592 auto identity_ = gc.identity(); |
| 593 Gdip.Matrix_Invert(identity_); | |
| 594 Gdip.Matrix_Multiply(matrix, identity_, Gdip.MatrixOrderAppend); | |
| 595 Gdip.Matrix_delete(identity_); | |
| 29 | 596 if (!Gdip.Matrix_IsIdentity(matrix)) { |
| 597 lpXform = new float[6]; | |
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598 Gdip.Matrix_GetElements(matrix, lpXform); |
| 29 | 599 } |
| 600 Gdip.Matrix_delete(matrix); | |
| 601 if ((data.style & DWT.MIRRORED) !is 0 && lpXform !is null) { | |
| 602 gdip = true; | |
| 603 lpXform = null; | |
| 604 } else { | |
| 605 Gdip.Graphics_SetPixelOffsetMode(gdipGraphics, Gdip.PixelOffsetModeNone); | |
| 30 | 606 auto rgn = Gdip.Region_new(); |
| 29 | 607 Gdip.Graphics_GetClip(gdipGraphics, rgn); |
| 608 if (!Gdip.Region_IsInfinite(rgn, gdipGraphics)) { | |
| 609 clipRgn = Gdip.Region_GetHRGN(rgn, gdipGraphics); | |
| 610 } | |
| 611 Gdip.Region_delete(rgn); | |
| 612 Gdip.Graphics_SetPixelOffsetMode(gdipGraphics, Gdip.PixelOffsetModeHalf); | |
| 613 hdc = Gdip.Graphics_GetHDC(gdipGraphics); | |
| 614 } | |
| 615 } | |
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616 Gdip.Brush foregroundBrush; |
| 30 | 617 int state = 0; |
| 29 | 618 if (gdip) { |
| 619 gc.checkGC(GC.FOREGROUND); | |
| 620 foregroundBrush = gc.getFgBrush(); | |
| 621 } else { | |
| 622 state = OS.SaveDC(hdc); | |
| 623 if ((data.style & DWT.MIRRORED) !is 0) { | |
| 624 OS.SetLayout(hdc, OS.GetLayout(hdc) | OS.LAYOUT_RTL); | |
| 625 } | |
| 626 if (lpXform !is null) { | |
| 627 OS.SetGraphicsMode(hdc, OS.GM_ADVANCED); | |
| 30 | 628 OS.SetWorldTransform(hdc, cast(XFORM*)lpXform.ptr); |
| 29 | 629 } |
| 30 | 630 if (clipRgn !is null) { |
| 29 | 631 OS.SelectClipRgn(hdc, clipRgn); |
| 632 OS.DeleteObject(clipRgn); | |
| 633 } | |
| 634 } | |
| 635 bool hasSelection = selectionStart <= selectionEnd && selectionStart !is -1 && selectionEnd !is -1; | |
| 636 if (hasSelection || (flags & DWT.LAST_LINE_SELECTION) !is 0) { | |
| 637 selectionStart = Math.min(Math.max(0, selectionStart), length - 1); | |
| 638 selectionEnd = Math.min(Math.max(0, selectionEnd), length - 1); | |
| 639 if (selectionForeground is null) selectionForeground = device.getSystemColor(DWT.COLOR_LIST_SELECTION_TEXT); | |
| 640 if (selectionBackground is null) selectionBackground = device.getSystemColor(DWT.COLOR_LIST_SELECTION); | |
| 641 selectionStart = translateOffset(selectionStart); | |
| 642 selectionEnd = translateOffset(selectionEnd); | |
| 643 } | |
| 30 | 644 RECT rect; |
| 645 void* selBrush; | |
| 646 void* selPen; | |
| 647 void* selBrushFg; | |
| 648 | |
| 29 | 649 if (hasSelection || (flags & DWT.LAST_LINE_SELECTION) !is 0) { |
| 650 if (gdip) { | |
| 30 | 651 auto bg = selectionBackground.handle; |
| 652 auto argb = ((alpha & 0xFF) << 24) | ((bg >> 16) & 0xFF) | (bg & 0xFF00) | ((bg & 0xFF) << 16); | |
| 653 auto color = Gdip.Color_new(argb); | |
| 29 | 654 selBrush = Gdip.SolidBrush_new(color); |
| 655 Gdip.Color_delete(color); | |
| 30 | 656 auto fg = selectionForeground.handle; |
| 29 | 657 argb = ((alpha & 0xFF) << 24) | ((fg >> 16) & 0xFF) | (fg & 0xFF00) | ((fg & 0xFF) << 16); |
| 658 color = Gdip.Color_new(argb); | |
| 659 selBrushFg = Gdip.SolidBrush_new(color); | |
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660 selPen = Gdip.Pen_new( cast(Gdip.Brush)selBrushFg, 1); |
| 29 | 661 Gdip.Color_delete(color); |
| 662 } else { | |
| 663 selBrush = OS.CreateSolidBrush(selectionBackground.handle); | |
| 664 selPen = OS.CreatePen(OS.PS_SOLID, 1, selectionForeground.handle); | |
| 665 } | |
| 666 } | |
| 667 int offset = (orientation & DWT.RIGHT_TO_LEFT) !is 0 ? -1 : 0; | |
| 668 OS.SetBkMode(hdc, OS.TRANSPARENT); | |
| 669 for (int line=0; line<runs.length; line++) { | |
| 670 int drawX = x + getLineIndent(line); | |
| 671 int drawY = y + lineY[line]; | |
| 672 StyleItem[] lineRuns = runs[line]; | |
| 673 int lineHeight = lineY[line+1] - lineY[line]; | |
| 674 if (flags !is 0 && (hasSelection || (flags & DWT.LAST_LINE_SELECTION) !is 0)) { | |
| 675 bool extents = false; | |
| 676 if (line is runs.length - 1 && (flags & DWT.LAST_LINE_SELECTION) !is 0) { | |
| 677 extents = true; | |
| 678 } else { | |
| 679 StyleItem run = lineRuns[lineRuns.length - 1]; | |
| 680 if (run.lineBreak && !run.softBreak) { | |
| 681 if (selectionStart <= run.start && run.start <= selectionEnd) extents = true; | |
| 682 } else { | |
| 683 int endOffset = run.start + run.length - 1; | |
| 684 if (selectionStart <= endOffset && endOffset < selectionEnd && (flags & DWT.FULL_SELECTION) !is 0) { | |
| 685 extents = true; | |
| 686 } | |
| 687 } | |
| 688 } | |
| 689 if (extents) { | |
| 690 int width; | |
| 691 if ((flags & DWT.FULL_SELECTION) !is 0) { | |
| 692 width = OS.IsWin95 ? 0x7FFF : 0x6FFFFFF; | |
| 693 } else { | |
| 694 width = (lineHeight - lineSpacing) / 3; | |
| 695 } | |
| 696 if (gdip) { | |
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697 Gdip.Graphics_FillRectangle(gdipGraphics, cast(Gdip.Brush)selBrush, drawX + lineWidth[line], drawY, width, lineHeight - lineSpacing); |
| 29 | 698 } else { |
| 699 OS.SelectObject(hdc, selBrush); | |
| 700 OS.PatBlt(hdc, drawX + lineWidth[line], drawY, width, lineHeight - lineSpacing, OS.PATCOPY); | |
| 701 } | |
| 702 } | |
| 703 } | |
| 704 if (drawX > clip.x + clip.width) continue; | |
| 705 if (drawX + lineWidth[line] < clip.x) continue; | |
| 706 int baseline = Math.max(0, this.ascent); | |
| 707 for (int i = 0; i < lineRuns.length; i++) { | |
| 708 baseline = Math.max(baseline, lineRuns[i].ascent); | |
| 709 } | |
| 710 int alignmentX = drawX; | |
| 711 for (int i = 0; i < lineRuns.length; i++) { | |
| 712 StyleItem run = lineRuns[i]; | |
| 713 if (run.length is 0) continue; | |
| 714 if (drawX > clip.x + clip.width) break; | |
| 715 if (drawX + run.width >= clip.x) { | |
| 716 if (!run.lineBreak || run.softBreak) { | |
| 717 int end = run.start + run.length - 1; | |
| 718 bool fullSelection = hasSelection && selectionStart <= run.start && selectionEnd >= end; | |
| 719 if (fullSelection) { | |
| 720 if (gdip) { | |
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721 Gdip.Graphics_FillRectangle(gdipGraphics, cast(Gdip.Brush)selBrush, drawX, drawY, run.width, lineHeight - lineSpacing); |
| 29 | 722 } else { |
| 723 OS.SelectObject(hdc, selBrush); | |
| 724 OS.PatBlt(hdc, drawX, drawY, run.width, lineHeight - lineSpacing, OS.PATCOPY); | |
| 725 } | |
| 726 } else { | |
| 727 if (run.style !is null && run.style.background !is null) { | |
| 30 | 728 auto bg = run.style.background.handle; |
| 29 | 729 int drawRunY = drawY + (baseline - run.ascent); |
| 730 if (gdip) { | |
| 731 int argb = ((alpha & 0xFF) << 24) | ((bg >> 16) & 0xFF) | (bg & 0xFF00) | ((bg & 0xFF) << 16); | |
| 30 | 732 auto color = Gdip.Color_new(argb); |
| 733 auto brush = Gdip.SolidBrush_new(color); | |
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734 Gdip.Graphics_FillRectangle(gdipGraphics, cast(Gdip.Brush)brush, drawX, drawRunY, run.width, run.ascent + run.descent); |
| 29 | 735 Gdip.Color_delete(color); |
| 736 Gdip.SolidBrush_delete(brush); | |
| 737 } else { | |
| 30 | 738 auto hBrush = OS.CreateSolidBrush (bg); |
| 739 auto oldBrush = OS.SelectObject(hdc, hBrush); | |
| 29 | 740 OS.PatBlt(hdc, drawX, drawRunY, run.width, run.ascent + run.descent, OS.PATCOPY); |
| 741 OS.SelectObject(hdc, oldBrush); | |
| 742 OS.DeleteObject(hBrush); | |
| 743 } | |
| 744 } | |
| 745 bool partialSelection = hasSelection && !(selectionStart > end || run.start > selectionEnd); | |
| 746 if (partialSelection) { | |
| 747 int selStart = Math.max(selectionStart, run.start) - run.start; | |
| 748 int selEnd = Math.min(selectionEnd, end) - run.start; | |
| 749 int cChars = run.length; | |
| 750 int gGlyphs = run.glyphCount; | |
| 30 | 751 int piX; |
| 752 int* advances = run.justify !is null ? run.justify : run.advances; | |
| 753 OS.ScriptCPtoX(selStart, false, cChars, gGlyphs, run.clusters, run.visAttrs, advances, &run.analysis, &piX); | |
| 754 int runX = (orientation & DWT.RIGHT_TO_LEFT) !is 0 ? run.width - piX : piX; | |
| 29 | 755 rect.left = drawX + runX; |
| 756 rect.top = drawY; | |
| 30 | 757 OS.ScriptCPtoX(selEnd, true, cChars, gGlyphs, run.clusters, run.visAttrs, advances, &run.analysis, &piX); |
| 758 runX = (orientation & DWT.RIGHT_TO_LEFT) !is 0 ? run.width - piX : piX; | |
| 29 | 759 rect.right = drawX + runX; |
| 760 rect.bottom = drawY + lineHeight - lineSpacing; | |
| 761 if (gdip) { | |
|
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762 Gdip.Graphics_FillRectangle(gdipGraphics, cast(Gdip.Brush)selBrush, rect.left, rect.top, rect.right - rect.left, rect.bottom - rect.top); |
| 29 | 763 } else { |
| 764 OS.SelectObject(hdc, selBrush); | |
| 765 OS.PatBlt(hdc, rect.left, rect.top, rect.right - rect.left, rect.bottom - rect.top, OS.PATCOPY); | |
| 766 } | |
| 767 } | |
| 768 } | |
| 769 } | |
| 770 } | |
| 771 drawX += run.width; | |
| 772 } | |
| 773 drawX = alignmentX; | |
| 774 for (int i = 0; i < lineRuns.length; i++) { | |
| 775 StyleItem run = lineRuns[i]; | |
| 776 if (run.length is 0) continue; | |
| 777 if (drawX > clip.x + clip.width) break; | |
| 778 if (drawX + run.width >= clip.x) { | |
| 779 if (!run.tab && (!run.lineBreak || run.softBreak) && !(run.style !is null && run.style.metrics !is null)) { | |
| 780 int end = run.start + run.length - 1; | |
| 781 bool fullSelection = hasSelection && selectionStart <= run.start && selectionEnd >= end; | |
| 782 bool partialSelection = hasSelection && !fullSelection && !(selectionStart > end || run.start > selectionEnd); | |
| 783 checkItem(hdc, run); | |
| 784 OS.SelectObject(hdc, getItemFont(run)); | |
| 785 int drawRunY = drawY + (baseline - run.ascent); | |
| 786 if (partialSelection) { | |
| 787 int selStart = Math.max(selectionStart, run.start) - run.start; | |
| 788 int selEnd = Math.min(selectionEnd, end) - run.start; | |
| 789 int cChars = run.length; | |
| 790 int gGlyphs = run.glyphCount; | |
| 30 | 791 int piX; |
| 792 int* advances = run.justify !is null ? run.justify : run.advances; | |
| 793 OS.ScriptCPtoX(selStart, false, cChars, gGlyphs, run.clusters, run.visAttrs, advances, &run.analysis, &piX); | |
| 794 int runX = (orientation & DWT.RIGHT_TO_LEFT) !is 0 ? run.width - piX : piX; | |
| 29 | 795 rect.left = drawX + runX; |
| 796 rect.top = drawY; | |
| 30 | 797 OS.ScriptCPtoX(selEnd, true, cChars, gGlyphs, run.clusters, run.visAttrs, advances, &run.analysis, &piX); |
| 798 runX = (orientation & DWT.RIGHT_TO_LEFT) !is 0 ? run.width - piX : piX; | |
| 29 | 799 rect.right = drawX + runX; |
| 800 rect.bottom = drawY + lineHeight; | |
| 801 } | |
| 802 if (gdip) { | |
| 803 OS.BeginPath(hdc); | |
| 30 | 804 OS.ScriptTextOut(hdc, run.psc, drawX, drawRunY, 0, null, &run.analysis , null, 0, run.glyphs, run.glyphCount, run.advances, run.justify, run.goffsets); |
| 29 | 805 OS.EndPath(hdc); |
| 806 int count = OS.GetPath(hdc, null, null, 0); | |
| 807 int[] points = new int[count*2]; | |
| 30 | 808 ubyte[] types = new ubyte[count]; |
| 809 OS.GetPath(hdc, cast(POINT*)points.ptr, types.ptr, count); | |
| 29 | 810 for (int typeIndex = 0; typeIndex < types.length; typeIndex++) { |
| 811 int newType = 0; | |
| 812 int type = types[typeIndex] & 0xFF; | |
| 813 switch (type & ~OS.PT_CLOSEFIGURE) { | |
| 814 case OS.PT_MOVETO: newType = Gdip.PathPointTypeStart; break; | |
| 815 case OS.PT_LINETO: newType = Gdip.PathPointTypeLine; break; | |
| 816 case OS.PT_BEZIERTO: newType = Gdip.PathPointTypeBezier; break; | |
| 81 | 817 default: |
| 29 | 818 } |
| 819 if ((type & OS.PT_CLOSEFIGURE) !is 0) newType |= Gdip.PathPointTypeCloseSubpath; | |
| 820 types[typeIndex] = cast(byte)newType; | |
| 821 } | |
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822 auto path = Gdip.GraphicsPath_new(cast(Gdip.Point[])points, types, count, Gdip.FillModeAlternate); |
| 30 | 823 if (path is null) DWT.error(DWT.ERROR_NO_HANDLES); |
| 824 auto brush = foregroundBrush; | |
| 29 | 825 if (fullSelection) { |
|
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826 brush = cast(Gdip.Brush)selBrushFg; |
| 29 | 827 } else { |
| 828 if (run.style !is null && run.style.foreground !is null) { | |
| 30 | 829 auto fg = run.style.foreground.handle; |
| 29 | 830 int argb = ((alpha & 0xFF) << 24) | ((fg >> 16) & 0xFF) | (fg & 0xFF00) | ((fg & 0xFF) << 16); |
| 30 | 831 auto color = Gdip.Color_new(argb); |
|
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832 brush = cast(Gdip.Brush)Gdip.SolidBrush_new(color); |
| 29 | 833 Gdip.Color_delete(color); |
| 834 } | |
| 835 } | |
| 836 int gstate = 0; | |
| 837 if (partialSelection) { | |
| 838 gdipRect.X = rect.left; | |
| 839 gdipRect.Y = rect.top; | |
| 840 gdipRect.Width = rect.right - rect.left; | |
| 841 gdipRect.Height = rect.bottom - rect.top; | |
| 842 gstate = Gdip.Graphics_Save(gdipGraphics); | |
| 30 | 843 Gdip.Graphics_SetClip(gdipGraphics, &gdipRect, Gdip.CombineModeExclude); |
| 29 | 844 } |
| 845 int antialias = Gdip.Graphics_GetSmoothingMode(gdipGraphics), textAntialias = 0; | |
| 846 int mode = Gdip.Graphics_GetTextRenderingHint(data.gdipGraphics); | |
| 847 switch (mode) { | |
| 848 case Gdip.TextRenderingHintSystemDefault: textAntialias = Gdip.SmoothingModeAntiAlias; break; | |
| 849 case Gdip.TextRenderingHintSingleBitPerPixel: | |
| 850 case Gdip.TextRenderingHintSingleBitPerPixelGridFit: textAntialias = Gdip.SmoothingModeNone; break; | |
| 851 case Gdip.TextRenderingHintAntiAlias: | |
| 852 case Gdip.TextRenderingHintAntiAliasGridFit: | |
| 853 case Gdip.TextRenderingHintClearTypeGridFit: textAntialias = Gdip.SmoothingModeAntiAlias; break; | |
| 81 | 854 default: |
| 29 | 855 } |
| 856 Gdip.Graphics_SetSmoothingMode(gdipGraphics, textAntialias); | |
| 857 int gstate2 = 0; | |
| 858 if ((data.style & DWT.MIRRORED) !is 0) { | |
| 859 gstate2 = Gdip.Graphics_Save(gdipGraphics); | |
| 860 Gdip.Graphics_ScaleTransform(gdipGraphics, -1, 1, Gdip.MatrixOrderPrepend); | |
| 861 Gdip.Graphics_TranslateTransform(gdipGraphics, -2 * drawX - run.width, 0, Gdip.MatrixOrderPrepend); | |
| 862 } | |
| 863 Gdip.Graphics_FillPath(gdipGraphics, brush, path); | |
| 864 if ((data.style & DWT.MIRRORED) !is 0) { | |
| 865 Gdip.Graphics_Restore(gdipGraphics, gstate2); | |
| 866 } | |
| 867 Gdip.Graphics_SetSmoothingMode(gdipGraphics, antialias); | |
| 868 if (run.style !is null && (run.style.underline || run.style.strikeout)) { | |
|
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parents:
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869 auto newPen = hasSelection ? cast(Gdip.Pen)selPen : Gdip.Pen_new(brush, 1); |
| 29 | 870 Gdip.Graphics_SetPixelOffsetMode(gdipGraphics, Gdip.PixelOffsetModeNone); |
| 871 if (run.style.underline) { | |
| 872 int underlineY = drawY + baseline + 1 - run.style.rise; | |
| 873 Gdip.Graphics_DrawLine(gdipGraphics, newPen, drawX, underlineY, drawX + run.width, underlineY); | |
| 874 } | |
| 875 if (run.style.strikeout) { | |
| 876 int strikeoutY = drawRunY + run.leading + (run.ascent - run.style.rise) / 2; | |
| 877 Gdip.Graphics_DrawLine(gdipGraphics, newPen, drawX, strikeoutY, drawX + run.width, strikeoutY); | |
| 878 } | |
|
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879 if (cast(void*)newPen !is selPen) Gdip.Pen_delete(newPen); |
| 29 | 880 Gdip.Graphics_SetPixelOffsetMode(gdipGraphics, Gdip.PixelOffsetModeHalf); |
| 881 } | |
| 882 if (partialSelection) { | |
| 883 Gdip.Graphics_Restore(gdipGraphics, gstate); | |
| 884 gstate = Gdip.Graphics_Save(gdipGraphics); | |
| 30 | 885 Gdip.Graphics_SetClip(gdipGraphics, &gdipRect, Gdip.CombineModeIntersect); |
| 29 | 886 Gdip.Graphics_SetSmoothingMode(gdipGraphics, textAntialias); |
|
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887 Gdip.Graphics_FillPath(gdipGraphics, cast(Gdip.Brush)selBrushFg, path); |
| 29 | 888 Gdip.Graphics_SetSmoothingMode(gdipGraphics, antialias); |
| 889 if (run.style !is null && (run.style.underline || run.style.strikeout)) { | |
| 890 Gdip.Graphics_SetPixelOffsetMode(gdipGraphics, Gdip.PixelOffsetModeNone); | |
| 891 if (run.style.underline) { | |
| 892 int underlineY = drawY + baseline + 1 - run.style.rise; | |
|
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893 Gdip.Graphics_DrawLine(gdipGraphics, cast(Gdip.Pen)selPen, rect.left, underlineY, rect.right, underlineY); |
| 29 | 894 } |
| 895 if (run.style.strikeout) { | |
| 896 int strikeoutY = drawRunY + run.leading + (run.ascent - run.style.rise) / 2; | |
|
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897 Gdip.Graphics_DrawLine(gdipGraphics, cast(Gdip.Pen)selPen, rect.left, strikeoutY, rect.right, strikeoutY); |
| 29 | 898 } |
| 899 Gdip.Graphics_SetPixelOffsetMode(gdipGraphics, Gdip.PixelOffsetModeHalf); | |
| 900 } | |
| 901 Gdip.Graphics_Restore(gdipGraphics, gstate); | |
| 902 } | |
| 903 Gdip.GraphicsPath_delete(path); | |
|
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904 if ( brush !is cast(Gdip.Brush)selBrushFg && brush !is cast(Gdip.Brush)foregroundBrush) |
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905 Gdip.SolidBrush_delete(cast(Gdip.SolidBrush)brush); |
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906 } else { |
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907 int fg = foreground; |
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908 if (fullSelection) { |
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909 fg = selectionForeground.handle; |
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910 } else { |
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911 if (run.style !is null && run.style.foreground !is null) fg = run.style.foreground.handle; |
| 29 | 912 } |
| 913 OS.SetTextColor(hdc, fg); | |
| 30 | 914 OS.ScriptTextOut(hdc, run.psc, drawX + offset, drawRunY, 0, null, &run.analysis , null, 0, run.glyphs, run.glyphCount, run.advances, run.justify, run.goffsets); |
| 29 | 915 if (run.style !is null && (run.style.underline || run.style.strikeout)) { |
| 30 | 916 auto newPen = hasSelection && fg is selectionForeground.handle ? cast(HPEN)selPen : OS.CreatePen(OS.PS_SOLID, 1, fg); |
| 917 auto oldPen = OS.SelectObject(hdc, newPen); | |
| 29 | 918 if (run.style.underline) { |
| 919 int underlineY = drawY + baseline + 1 - run.style.rise; | |
| 30 | 920 OS.MoveToEx(hdc, drawX, underlineY, null); |
| 29 | 921 OS.LineTo(hdc, drawX + run.width, underlineY); |
| 922 } | |
| 923 if (run.style.strikeout) { | |
| 924 int strikeoutY = drawRunY + run.leading + (run.ascent - run.style.rise) / 2; | |
| 30 | 925 OS.MoveToEx(hdc, drawX, strikeoutY, null); |
| 29 | 926 OS.LineTo(hdc, drawX + run.width, strikeoutY); |
| 927 } | |
| 928 OS.SelectObject(hdc, oldPen); | |
| 929 if (!hasSelection || fg !is selectionForeground.handle) OS.DeleteObject(newPen); | |
| 930 } | |
| 931 if (partialSelection && fg !is selectionForeground.handle) { | |
| 932 OS.SetTextColor(hdc, selectionForeground.handle); | |
| 30 | 933 OS.ScriptTextOut(hdc, run.psc, drawX + offset, drawRunY, OS.ETO_CLIPPED, &rect, &run.analysis , null, 0, run.glyphs, run.glyphCount, run.advances, run.justify, run.goffsets); |
| 29 | 934 if (run.style !is null && (run.style.underline || run.style.strikeout)) { |
| 30 | 935 auto oldPen = OS.SelectObject(hdc, selPen); |
| 29 | 936 if (run.style.underline) { |
| 937 int underlineY = drawY + baseline + 1 - run.style.rise; | |
| 30 | 938 OS.MoveToEx(hdc, rect.left, underlineY, null); |
| 29 | 939 OS.LineTo(hdc, rect.right, underlineY); |
| 940 } | |
| 941 if (run.style.strikeout) { | |
| 942 int strikeoutY = drawRunY + run.leading + (run.ascent - run.style.rise) / 2; | |
| 30 | 943 OS.MoveToEx(hdc, rect.left, strikeoutY, null); |
| 29 | 944 OS.LineTo(hdc, rect.right, strikeoutY); |
| 945 } | |
| 946 OS.SelectObject(hdc, oldPen); | |
| 947 } | |
| 948 } | |
| 949 } | |
| 950 } | |
| 951 } | |
| 952 drawX += run.width; | |
| 953 } | |
| 954 } | |
| 955 if (gdip) { | |
|
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956 if (selBrush !is null) Gdip.SolidBrush_delete(cast(Gdip.SolidBrush)selBrush); |
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957 if (selBrushFg !is null) Gdip.SolidBrush_delete(cast(Gdip.SolidBrush)selBrushFg); |
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958 if (selPen !is null) Gdip.Pen_delete(cast(Gdip.Pen)selPen); |
| 29 | 959 } else { |
| 960 OS.RestoreDC(hdc, state); | |
| 30 | 961 if (gdipGraphics !is null) Gdip.Graphics_ReleaseHDC(gdipGraphics, hdc); |
| 962 if (selBrush !is null) OS.DeleteObject (selBrush); | |
| 963 if (selPen !is null) OS.DeleteObject (selPen); | |
| 29 | 964 } |
| 965 } | |
| 966 | |
| 967 void freeRuns () { | |
| 968 if (allRuns is null) return; | |
| 969 for (int i=0; i<allRuns.length; i++) { | |
| 970 StyleItem run = allRuns[i]; | |
| 971 run.free(); | |
| 972 } | |
| 973 allRuns = null; | |
| 974 runs = null; | |
| 975 segmentsText = null; | |
| 976 } | |
| 977 | |
| 978 /** | |
| 979 * Returns the receiver's horizontal text alignment, which will be one | |
| 980 * of <code>DWT.LEFT</code>, <code>DWT.CENTER</code> or | |
| 981 * <code>DWT.RIGHT</code>. | |
| 982 * | |
| 983 * @return the alignment used to positioned text horizontally | |
| 984 * | |
| 985 * @exception DWTException <ul> | |
| 986 * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> | |
| 987 * </ul> | |
| 988 */ | |
| 989 public int getAlignment () { | |
| 990 checkLayout(); | |
| 991 return alignment; | |
| 992 } | |
| 993 | |
| 994 /** | |
| 995 * Returns the ascent of the receiver. | |
| 996 * | |
| 997 * @return the ascent | |
| 998 * | |
| 999 * @exception DWTException <ul> | |
| 1000 * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> | |
| 1001 * </ul> | |
| 1002 * | |
| 1003 * @see #getDescent() | |
| 1004 * @see #setDescent(int) | |
| 1005 * @see #setAscent(int) | |
| 1006 * @see #getLineMetrics(int) | |
| 1007 */ | |
| 1008 public int getAscent () { | |
| 1009 checkLayout(); | |
| 1010 return ascent; | |
| 1011 } | |
| 1012 | |
| 1013 /** | |
| 1014 * Returns the bounds of the receiver. | |
| 1015 * | |
| 1016 * @return the bounds of the receiver | |
| 1017 * | |
| 1018 * @exception DWTException <ul> | |
| 1019 * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> | |
| 1020 * </ul> | |
| 1021 */ | |
| 1022 public Rectangle getBounds () { | |
| 1023 checkLayout(); | |
| 1024 computeRuns(null); | |
| 1025 int width = 0; | |
| 1026 if (wrapWidth !is -1) { | |
| 1027 width = wrapWidth; | |
| 1028 } else { | |
| 1029 for (int line=0; line<runs.length; line++) { | |
| 1030 width = Math.max(width, lineWidth[line] + getLineIndent(line)); | |
| 1031 } | |
| 1032 } | |
| 1033 return new Rectangle (0, 0, width, lineY[lineY.length - 1]); | |
| 1034 } | |
| 1035 | |
| 1036 /** | |
| 1037 * Returns the bounds for the specified range of characters. The | |
| 1038 * bounds is the smallest rectangle that encompasses all characters | |
| 1039 * in the range. The start and end offsets are inclusive and will be | |
| 1040 * clamped if out of range. | |
| 1041 * | |
| 1042 * @param start the start offset | |
| 1043 * @param end the end offset | |
| 1044 * @return the bounds of the character range | |
| 1045 * | |
| 1046 * @exception DWTException <ul> | |
| 1047 * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> | |
| 1048 * </ul> | |
| 1049 */ | |
| 1050 public Rectangle getBounds (int start, int end) { | |
| 1051 checkLayout(); | |
| 1052 computeRuns(null); | |
| 30 | 1053 int length = text.length; |
| 29 | 1054 if (length is 0) return new Rectangle(0, 0, 0, 0); |
| 1055 if (start > end) return new Rectangle(0, 0, 0, 0); | |
| 1056 start = Math.min(Math.max(0, start), length - 1); | |
| 1057 end = Math.min(Math.max(0, end), length - 1); | |
| 1058 start = translateOffset(start); | |
| 1059 end = translateOffset(end); | |
| 1060 int left = 0x7fffffff, right = 0; | |
| 1061 int top = 0x7fffffff, bottom = 0; | |
| 1062 bool isRTL = (orientation & DWT.RIGHT_TO_LEFT) !is 0; | |
| 1063 for (int i = 0; i < allRuns.length - 1; i++) { | |
| 1064 StyleItem run = allRuns[i]; | |
| 1065 int runEnd = run.start + run.length; | |
| 1066 if (runEnd <= start) continue; | |
| 1067 if (run.start > end) break; | |
| 1068 int runLead = run.x; | |
| 1069 int runTrail = run.x + run.width; | |
| 1070 if (run.start <= start && start < runEnd) { | |
| 1071 int cx = 0; | |
| 1072 if (run.style !is null && run.style.metrics !is null) { | |
| 1073 GlyphMetrics metrics = run.style.metrics; | |
| 1074 cx = metrics.width * (start - run.start); | |
| 1075 } else if (!run.tab) { | |
| 30 | 1076 int piX; |
| 1077 int* advances = run.justify !is null ? run.justify : run.advances; | |
| 1078 OS.ScriptCPtoX(start - run.start, false, run.length, run.glyphCount, run.clusters, run.visAttrs, advances, &run.analysis, &piX); | |
| 1079 cx = isRTL ? run.width - piX : piX; | |
| 29 | 1080 } |
| 1081 if (run.analysis.fRTL ^ isRTL) { | |
| 1082 runTrail = run.x + cx; | |
| 1083 } else { | |
| 1084 runLead = run.x + cx; | |
| 1085 } | |
| 1086 } | |
| 1087 if (run.start <= end && end < runEnd) { | |
| 1088 int cx = run.width; | |
| 1089 if (run.style !is null && run.style.metrics !is null) { | |
| 1090 GlyphMetrics metrics = run.style.metrics; | |
| 1091 cx = metrics.width * (end - run.start + 1); | |
| 1092 } else if (!run.tab) { | |
| 30 | 1093 int piX; |
| 1094 int* advances = run.justify !is null ? run.justify : run.advances; | |
| 1095 OS.ScriptCPtoX(end - run.start, true, run.length, run.glyphCount, run.clusters, run.visAttrs, advances, &run.analysis, &piX); | |
| 1096 cx = isRTL ? run.width - piX : piX; | |
| 29 | 1097 } |
| 1098 if (run.analysis.fRTL ^ isRTL) { | |
| 1099 runLead = run.x + cx; | |
| 1100 } else { | |
| 1101 runTrail = run.x + cx; | |
| 1102 } | |
| 1103 } | |
| 1104 int lineIndex = 0; | |
| 1105 while (lineIndex < runs.length && lineOffset[lineIndex + 1] <= run.start) { | |
| 1106 lineIndex++; | |
| 1107 } | |
| 1108 left = Math.min(left, runLead); | |
| 1109 right = Math.max(right, runTrail); | |
| 1110 top = Math.min(top, lineY[lineIndex]); | |
| 1111 bottom = Math.max(bottom, lineY[lineIndex + 1] - lineSpacing); | |
| 1112 } | |
| 1113 return new Rectangle(left, top, right - left, bottom - top); | |
| 1114 } | |
| 1115 | |
| 1116 /** | |
| 1117 * Returns the descent of the receiver. | |
| 1118 * | |
| 1119 * @return the descent | |
| 1120 * | |
| 1121 * @exception DWTException <ul> | |
| 1122 * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> | |
| 1123 * </ul> | |
| 1124 * | |
| 1125 * @see #getAscent() | |
| 1126 * @see #setAscent(int) | |
| 1127 * @see #setDescent(int) | |
| 1128 * @see #getLineMetrics(int) | |
| 1129 */ | |
| 1130 public int getDescent () { | |
| 1131 checkLayout(); | |
| 1132 return descent; | |
| 1133 } | |
| 1134 | |
| 1135 /** | |
| 1136 * Returns the default font currently being used by the receiver | |
| 1137 * to draw and measure text. | |
| 1138 * | |
| 1139 * @return the receiver's font | |
| 1140 * | |
| 1141 * @exception DWTException <ul> | |
| 1142 * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> | |
| 1143 * </ul> | |
| 1144 */ | |
| 1145 public Font getFont () { | |
| 1146 checkLayout(); | |
| 1147 return font; | |
| 1148 } | |
| 1149 | |
| 1150 /** | |
| 1151 * Returns the receiver's indent. | |
| 1152 * | |
| 1153 * @return the receiver's indent | |
| 1154 * | |
| 1155 * @exception DWTException <ul> | |
| 1156 * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> | |
| 1157 * </ul> | |
| 1158 * | |
| 1159 * @since 3.2 | |
| 1160 */ | |
| 1161 public int getIndent () { | |
| 1162 checkLayout(); | |
| 1163 return indent; | |
| 1164 } | |
| 1165 | |
| 1166 /** | |
| 1167 * Returns the receiver's justification. | |
| 1168 * | |
| 1169 * @return the receiver's justification | |
| 1170 * | |
| 1171 * @exception DWTException <ul> | |
| 1172 * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> | |
| 1173 * </ul> | |
| 1174 * | |
| 1175 * @since 3.2 | |
| 1176 */ | |
| 1177 public bool getJustify () { | |
| 1178 checkLayout(); | |
| 1179 return justify; | |
| 1180 } | |
| 1181 | |
| 30 | 1182 HFONT getItemFont (StyleItem item) { |
| 1183 if (item.fallbackFont !is null) return cast(HFONT) item.fallbackFont; | |
| 29 | 1184 if (item.style !is null && item.style.font !is null) { |
| 1185 return item.style.font.handle; | |
| 1186 } | |
| 1187 if (this.font !is null) { | |
| 1188 return this.font.handle; | |
| 1189 } | |
| 1190 return device.systemFont; | |
| 1191 } | |
| 1192 | |
| 1193 /** | |
| 1194 * Returns the embedding level for the specified character offset. The | |
| 1195 * embedding level is usually used to determine the directionality of a | |
| 1196 * character in bidirectional text. | |
| 1197 * | |
| 1198 * @param offset the character offset | |
| 1199 * @return the embedding level | |
| 1200 * | |
| 1201 * @exception IllegalArgumentException <ul> | |
| 1202 * <li>ERROR_INVALID_ARGUMENT - if the character offset is out of range</li> | |
| 1203 * </ul> | |
| 1204 * @exception DWTException <ul> | |
| 1205 * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> | |
| 1206 */ | |
| 1207 public int getLevel (int offset) { | |
| 1208 checkLayout(); | |
| 1209 computeRuns(null); | |
| 30 | 1210 int length = text.length; |
| 29 | 1211 if (!(0 <= offset && offset <= length)) DWT.error(DWT.ERROR_INVALID_RANGE); |
| 1212 offset = translateOffset(offset); | |
| 1213 for (int i=1; i<allRuns.length; i++) { | |
| 1214 if (allRuns[i].start > offset) { | |
| 1215 return allRuns[i - 1].analysis.s.uBidiLevel; | |
| 1216 } | |
| 1217 } | |
| 1218 return (orientation & DWT.RIGHT_TO_LEFT) !is 0 ? 1 : 0; | |
| 1219 } | |
| 1220 | |
| 1221 /** | |
| 1222 * Returns the bounds of the line for the specified line index. | |
| 1223 * | |
| 1224 * @param lineIndex the line index | |
| 1225 * @return the line bounds | |
| 1226 * | |
| 1227 * @exception IllegalArgumentException <ul> | |
| 1228 * <li>ERROR_INVALID_ARGUMENT - if the line index is out of range</li> | |
| 1229 * </ul> | |
| 1230 * @exception DWTException <ul> | |
| 1231 * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> | |
| 1232 * </ul> | |
| 1233 */ | |
| 1234 public Rectangle getLineBounds(int lineIndex) { | |
| 1235 checkLayout(); | |
| 1236 computeRuns(null); | |
| 1237 if (!(0 <= lineIndex && lineIndex < runs.length)) DWT.error(DWT.ERROR_INVALID_RANGE); | |
| 1238 int x = getLineIndent(lineIndex); | |
| 1239 int y = lineY[lineIndex]; | |
| 1240 int width = lineWidth[lineIndex]; | |
| 1241 int height = lineY[lineIndex + 1] - y - lineSpacing; | |
| 1242 return new Rectangle (x, y, width, height); | |
| 1243 } | |
| 1244 | |
| 1245 /** | |
| 1246 * Returns the receiver's line count. This includes lines caused | |
| 1247 * by wrapping. | |
| 1248 * | |
| 1249 * @return the line count | |
| 1250 * | |
| 1251 * @exception DWTException <ul> | |
| 1252 * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> | |
| 1253 * </ul> | |
| 1254 */ | |
| 1255 public int getLineCount () { | |
| 1256 checkLayout(); | |
| 1257 computeRuns(null); | |
| 1258 return runs.length; | |
| 1259 } | |
| 1260 | |
| 1261 int getLineIndent (int lineIndex) { | |
| 1262 int lineIndent = 0; | |
| 1263 if (lineIndex is 0) { | |
| 1264 lineIndent = indent; | |
| 1265 } else { | |
| 1266 StyleItem[] previousLine = runs[lineIndex - 1]; | |
| 1267 StyleItem previousRun = previousLine[previousLine.length - 1]; | |
| 1268 if (previousRun.lineBreak && !previousRun.softBreak) { | |
| 1269 lineIndent = indent; | |
| 1270 } | |
| 1271 } | |
| 1272 if (wrapWidth !is -1) { | |
| 1273 bool partialLine = true; | |
| 1274 if (justify) { | |
| 1275 StyleItem[] lineRun = runs[lineIndex]; | |
| 1276 if (lineRun[lineRun.length - 1].softBreak) { | |
| 1277 partialLine = false; | |
| 1278 } | |
| 1279 } | |
| 1280 if (partialLine) { | |
| 1281 int lineWidth = this.lineWidth[lineIndex] + lineIndent; | |
| 1282 switch (alignment) { | |
| 1283 case DWT.CENTER: lineIndent += (wrapWidth - lineWidth) / 2; break; | |
| 1284 case DWT.RIGHT: lineIndent += wrapWidth - lineWidth; break; | |
| 81 | 1285 default: |
| 29 | 1286 } |
| 1287 } | |
| 1288 } | |
| 1289 return lineIndent; | |
| 1290 } | |
| 1291 | |
| 1292 /** | |
| 1293 * Returns the index of the line that contains the specified | |
| 1294 * character offset. | |
| 1295 * | |
| 1296 * @param offset the character offset | |
| 1297 * @return the line index | |
| 1298 * | |
| 1299 * @exception IllegalArgumentException <ul> | |
| 1300 * <li>ERROR_INVALID_ARGUMENT - if the character offset is out of range</li> | |
| 1301 * </ul> | |
| 1302 * @exception DWTException <ul> | |
| 1303 * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> | |
| 1304 * </ul> | |
| 1305 */ | |
| 1306 public int getLineIndex (int offset) { | |
| 1307 checkLayout(); | |
| 1308 computeRuns(null); | |
| 30 | 1309 int length = text.length; |
| 29 | 1310 if (!(0 <= offset && offset <= length)) DWT.error(DWT.ERROR_INVALID_RANGE); |
| 1311 offset = translateOffset(offset); | |
| 1312 for (int line=0; line<runs.length; line++) { | |
| 1313 if (lineOffset[line + 1] > offset) { | |
| 1314 return line; | |
| 1315 } | |
| 1316 } | |
| 1317 return runs.length - 1; | |
| 1318 } | |
| 1319 | |
| 1320 /** | |
| 1321 * Returns the font metrics for the specified line index. | |
| 1322 * | |
| 1323 * @param lineIndex the line index | |
| 1324 * @return the font metrics | |
| 1325 * | |
| 1326 * @exception IllegalArgumentException <ul> | |
| 1327 * <li>ERROR_INVALID_ARGUMENT - if the line index is out of range</li> | |
| 1328 * </ul> | |
| 1329 * @exception DWTException <ul> | |
| 1330 * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> | |
| 1331 * </ul> | |
| 1332 */ | |
| 1333 public FontMetrics getLineMetrics (int lineIndex) { | |
| 1334 checkLayout(); | |
| 1335 computeRuns(null); | |
| 1336 if (!(0 <= lineIndex && lineIndex < runs.length)) DWT.error(DWT.ERROR_INVALID_RANGE); | |
| 30 | 1337 auto hDC = device.internal_new_GC(null); |
| 1338 auto srcHdc = OS.CreateCompatibleDC(hDC); | |
| 29 | 1339 TEXTMETRIC lptm; |
| 1340 OS.SelectObject(srcHdc, font !is null ? font.handle : device.systemFont); | |
| 1341 OS.GetTextMetrics(srcHdc, &lptm); | |
| 1342 OS.DeleteDC(srcHdc); | |
| 1343 device.internal_dispose_GC(hDC, null); | |
| 1344 | |
| 1345 int ascent = Math.max(lptm.tmAscent, this.ascent); | |
| 1346 int descent = Math.max(lptm.tmDescent, this.descent); | |
| 1347 int leading = lptm.tmInternalLeading; | |
| 30 | 1348 if (text.length !is 0) { |
| 29 | 1349 StyleItem[] lineRuns = runs[lineIndex]; |
| 1350 for (int i = 0; i<lineRuns.length; i++) { | |
| 1351 StyleItem run = lineRuns[i]; | |
| 1352 if (run.ascent > ascent) { | |
| 1353 ascent = run.ascent; | |
| 1354 leading = run.leading; | |
| 1355 } | |
| 1356 descent = Math.max(descent, run.descent); | |
| 1357 } | |
| 1358 } | |
| 1359 lptm.tmAscent = ascent; | |
| 1360 lptm.tmDescent = descent; | |
| 1361 lptm.tmHeight = ascent + descent; | |
| 1362 lptm.tmInternalLeading = leading; | |
| 1363 lptm.tmAveCharWidth = 0; | |
| 30 | 1364 return FontMetrics.win32_new(&lptm); |
| 29 | 1365 } |
| 1366 | |
| 1367 /** | |
| 1368 * Returns the line offsets. Each value in the array is the | |
| 1369 * offset for the first character in a line except for the last | |
| 1370 * value, which contains the length of the text. | |
| 1371 * | |
| 1372 * @return the line offsets | |
| 1373 * | |
| 1374 * @exception DWTException <ul> | |
| 1375 * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> | |
| 1376 * </ul> | |
| 1377 */ | |
| 1378 public int[] getLineOffsets () { | |
| 1379 checkLayout(); | |
| 1380 computeRuns(null); | |
| 1381 int[] offsets = new int[lineOffset.length]; | |
| 1382 for (int i = 0; i < offsets.length; i++) { | |
| 1383 offsets[i] = untranslateOffset(lineOffset[i]); | |
| 1384 } | |
| 1385 return offsets; | |
| 1386 } | |
| 1387 | |
| 1388 /** | |
| 1389 * Returns the location for the specified character offset. The | |
| 1390 * <code>trailing</code> argument indicates whether the offset | |
| 1391 * corresponds to the leading or trailing edge of the cluster. | |
| 1392 * | |
| 1393 * @param offset the character offset | |
| 1394 * @param trailing the trailing flag | |
| 1395 * @return the location of the character offset | |
| 1396 * | |
| 1397 * @exception DWTException <ul> | |
| 1398 * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> | |
| 1399 * </ul> | |
| 1400 * | |
| 1401 * @see #getOffset(Point, int[]) | |
| 1402 * @see #getOffset(int, int, int[]) | |
| 1403 */ | |
| 1404 public Point getLocation (int offset, bool trailing) { | |
| 1405 checkLayout(); | |
| 1406 computeRuns(null); | |
| 30 | 1407 int length = text.length; |
| 29 | 1408 if (!(0 <= offset && offset <= length)) DWT.error(DWT.ERROR_INVALID_RANGE); |
| 30 | 1409 length = segmentsText.length; |
| 29 | 1410 offset = translateOffset(offset); |
| 1411 int line; | |
| 1412 for (line=0; line<runs.length; line++) { | |
| 1413 if (lineOffset[line + 1] > offset) break; | |
| 1414 } | |
| 1415 line = Math.min(line, runs.length - 1); | |
| 1416 StyleItem[] lineRuns = runs[line]; | |
| 1417 Point result = null; | |
| 1418 if (offset is length) { | |
| 1419 result = new Point(lineWidth[line], lineY[line]); | |
| 1420 } else { | |
| 1421 int width = 0; | |
| 1422 for (int i=0; i<lineRuns.length; i++) { | |
| 1423 StyleItem run = lineRuns[i]; | |
| 1424 int end = run.start + run.length; | |
| 1425 if (run.start <= offset && offset < end) { | |
| 1426 if (run.style !is null && run.style.metrics !is null) { | |
| 1427 GlyphMetrics metrics = run.style.metrics; | |
| 1428 width += metrics.width * (offset - run.start + (trailing ? 1 : 0)); | |
| 1429 result = new Point(width, lineY[line]); | |
| 1430 } else if (run.tab) { | |
| 1431 if (trailing || (offset is length)) width += run.width; | |
| 1432 result = new Point(width, lineY[line]); | |
| 1433 } else { | |
| 1434 int runOffset = offset - run.start; | |
| 1435 int cChars = run.length; | |
| 1436 int gGlyphs = run.glyphCount; | |
| 30 | 1437 int piX; |
| 1438 int* advances = run.justify !is null ? run.justify : run.advances; | |
| 1439 OS.ScriptCPtoX(runOffset, trailing, cChars, gGlyphs, run.clusters, run.visAttrs, advances, &run.analysis, &piX); | |
| 29 | 1440 if ((orientation & DWT.RIGHT_TO_LEFT) !is 0) { |
| 30 | 1441 result = new Point(width + (run.width - piX), lineY[line]); |
| 29 | 1442 } else { |
| 30 | 1443 result = new Point(width + piX, lineY[line]); |
| 29 | 1444 } |
| 1445 } | |
| 1446 break; | |
| 1447 } | |
| 1448 width += run.width; | |
| 1449 } | |
| 1450 } | |
| 1451 if (result is null) result = new Point(0, 0); | |
| 1452 result.x += getLineIndent(line); | |
| 1453 return result; | |
| 1454 } | |
| 1455 | |
| 1456 /** | |
| 1457 * Returns the next offset for the specified offset and movement | |
| 1458 * type. The movement is one of <code>DWT.MOVEMENT_CHAR</code>, | |
| 1459 * <code>DWT.MOVEMENT_CLUSTER</code>, <code>DWT.MOVEMENT_WORD</code>, | |
| 1460 * <code>DWT.MOVEMENT_WORD_END</code> or <code>DWT.MOVEMENT_WORD_START</code>. | |
| 1461 * | |
| 1462 * @param offset the start offset | |
| 1463 * @param movement the movement type | |
| 1464 * @return the next offset | |
| 1465 * | |
| 1466 * @exception IllegalArgumentException <ul> | |
| 1467 * <li>ERROR_INVALID_ARGUMENT - if the offset is out of range</li> | |
| 1468 * </ul> | |
| 1469 * @exception DWTException <ul> | |
| 1470 * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> | |
| 1471 * </ul> | |
| 1472 * | |
| 1473 * @see #getPreviousOffset(int, int) | |
| 1474 */ | |
| 1475 public int getNextOffset (int offset, int movement) { | |
| 1476 checkLayout(); | |
| 1477 return _getOffset (offset, movement, true); | |
| 1478 } | |
| 1479 | |
| 1480 int _getOffset(int offset, int movement, bool forward) { | |
| 1481 computeRuns(null); | |
| 30 | 1482 int length = text.length; |
| 29 | 1483 if (!(0 <= offset && offset <= length)) DWT.error(DWT.ERROR_INVALID_RANGE); |
| 1484 if (forward && offset is length) return length; | |
| 1485 if (!forward && offset is 0) return 0; | |
| 1486 int step = forward ? 1 : -1; | |
| 1487 if ((movement & DWT.MOVEMENT_CHAR) !is 0) return offset + step; | |
| 30 | 1488 length = segmentsText.length; |
| 29 | 1489 offset = translateOffset(offset); |
| 30 | 1490 SCRIPT_LOGATTR* logAttr; |
| 1491 SCRIPT_PROPERTIES* properties; | |
| 29 | 1492 int i = forward ? 0 : allRuns.length - 1; |
| 1493 offset = validadeOffset(offset, step); | |
| 1494 do { | |
| 1495 StyleItem run = allRuns[i]; | |
| 1496 if (run.start <= offset && offset < run.start + run.length) { | |
| 1497 if (run.lineBreak && !run.softBreak) return untranslateOffset(run.start); | |
| 1498 if (run.tab) return untranslateOffset(run.start); | |
| 30 | 1499 properties = device.scripts[run.analysis.eScript]; |
| 29 | 1500 bool isComplex = properties.fNeedsCaretInfo || properties.fNeedsWordBreaking; |
| 1501 if (isComplex) breakRun(run); | |
| 1502 while (run.start <= offset && offset < run.start + run.length) { | |
| 1503 if (isComplex) { | |
| 30 | 1504 logAttr = run.psla + (offset - run.start); |
| 29 | 1505 } |
| 1506 switch (movement) { | |
| 1507 case DWT.MOVEMENT_CLUSTER: { | |
| 1508 if (properties.fNeedsCaretInfo) { | |
| 1509 if (!logAttr.fInvalid && logAttr.fCharStop) return untranslateOffset(offset); | |
| 1510 } else { | |
| 1511 return untranslateOffset(offset); | |
| 1512 } | |
| 1513 break; | |
| 1514 } | |
| 1515 case DWT.MOVEMENT_WORD_START: | |
| 1516 case DWT.MOVEMENT_WORD: { | |
| 1517 if (properties.fNeedsWordBreaking) { | |
| 1518 if (!logAttr.fInvalid && logAttr.fWordStop) return untranslateOffset(offset); | |
| 1519 } else { | |
| 1520 if (offset > 0) { | |
| 1521 bool letterOrDigit = Compatibility.isLetterOrDigit(segmentsText.charAt(offset)); | |
| 1522 bool previousLetterOrDigit = Compatibility.isLetterOrDigit(segmentsText.charAt(offset - 1)); | |
| 1523 if (letterOrDigit !is previousLetterOrDigit || !letterOrDigit) { | |
| 1524 if (!Compatibility.isWhitespace(segmentsText.charAt(offset))) { | |
| 1525 return untranslateOffset(offset); | |
| 1526 } | |
| 1527 } | |
| 1528 } | |
| 1529 } | |
| 1530 break; | |
| 1531 } | |
| 1532 case DWT.MOVEMENT_WORD_END: { | |
| 1533 if (offset > 0) { | |
| 1534 bool isLetterOrDigit = Compatibility.isLetterOrDigit(segmentsText.charAt(offset)); | |
| 1535 bool previousLetterOrDigit = Compatibility.isLetterOrDigit(segmentsText.charAt(offset - 1)); | |
| 1536 if (!isLetterOrDigit && previousLetterOrDigit) { | |
| 1537 return untranslateOffset(offset); | |
| 1538 } | |
| 1539 } | |
| 1540 break; | |
| 1541 } | |
| 81 | 1542 default: |
| 29 | 1543 } |
| 1544 offset = validadeOffset(offset, step); | |
| 1545 } | |
| 1546 } | |
| 1547 i += step; | |
| 1548 } while (0 <= i && i < allRuns.length - 1 && 0 <= offset && offset < length); | |
| 30 | 1549 return forward ? text.length : 0; |
| 29 | 1550 } |
| 1551 | |
| 1552 /** | |
| 1553 * Returns the character offset for the specified point. | |
| 1554 * For a typical character, the trailing argument will be filled in to | |
| 1555 * indicate whether the point is closer to the leading edge (0) or | |
| 1556 * the trailing edge (1). When the point is over a cluster composed | |
| 1557 * of multiple characters, the trailing argument will be filled with the | |
| 1558 * position of the character in the cluster that is closest to | |
| 1559 * the point. | |
| 1560 * | |
| 1561 * @param point the point | |
| 1562 * @param trailing the trailing buffer | |
| 1563 * @return the character offset | |
| 1564 * | |
| 1565 * @exception IllegalArgumentException <ul> | |
| 1566 * <li>ERROR_INVALID_ARGUMENT - if the trailing length is less than <code>1</code></li> | |
| 1567 * <li>ERROR_NULL_ARGUMENT - if the point is null</li> | |
| 1568 * </ul> | |
| 1569 * @exception DWTException <ul> | |
| 1570 * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> | |
| 1571 * </ul> | |
| 1572 * | |
| 1573 * @see #getLocation(int, bool) | |
| 1574 */ | |
| 1575 public int getOffset (Point point, int[] trailing) { | |
| 1576 checkLayout(); | |
| 1577 if (point is null) DWT.error (DWT.ERROR_NULL_ARGUMENT); | |
| 1578 return getOffset (point.x, point.y, trailing) ; | |
| 1579 } | |
| 1580 | |
| 1581 /** | |
| 1582 * Returns the character offset for the specified point. | |
| 1583 * For a typical character, the trailing argument will be filled in to | |
| 1584 * indicate whether the point is closer to the leading edge (0) or | |
| 1585 * the trailing edge (1). When the point is over a cluster composed | |
| 1586 * of multiple characters, the trailing argument will be filled with the | |
| 1587 * position of the character in the cluster that is closest to | |
| 1588 * the point. | |
| 1589 * | |
| 1590 * @param x the x coordinate of the point | |
| 1591 * @param y the y coordinate of the point | |
| 1592 * @param trailing the trailing buffer | |
| 1593 * @return the character offset | |
| 1594 * | |
| 1595 * @exception IllegalArgumentException <ul> | |
| 1596 * <li>ERROR_INVALID_ARGUMENT - if the trailing length is less than <code>1</code></li> | |
| 1597 * </ul> | |
| 1598 * @exception DWTException <ul> | |
| 1599 * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> | |
| 1600 * </ul> | |
| 1601 * | |
| 1602 * @see #getLocation(int, bool) | |
| 1603 */ | |
| 1604 public int getOffset (int x, int y, int[] trailing) { | |
| 1605 checkLayout(); | |
| 1606 computeRuns(null); | |
| 1607 if (trailing !is null && trailing.length < 1) DWT.error(DWT.ERROR_INVALID_ARGUMENT); | |
| 1608 int line; | |
| 1609 int lineCount = runs.length; | |
| 1610 for (line=0; line<lineCount; line++) { | |
| 1611 if (lineY[line + 1] > y) break; | |
| 1612 } | |
| 1613 line = Math.min(line, runs.length - 1); | |
| 1614 x -= getLineIndent(line); | |
| 1615 StyleItem[] lineRuns = runs[line]; | |
| 1616 if (x >= lineWidth[line]) x = lineWidth[line] - 1; | |
| 1617 if (x < 0) x = 0; | |
| 1618 int width = 0; | |
| 1619 for (int i = 0; i < lineRuns.length; i++) { | |
| 1620 StyleItem run = lineRuns[i]; | |
| 1621 if (run.lineBreak && !run.softBreak) return untranslateOffset(run.start); | |
| 1622 if (width + run.width > x) { | |
| 1623 int xRun = x - width; | |
| 1624 if (run.style !is null && run.style.metrics !is null) { | |
| 1625 GlyphMetrics metrics = run.style.metrics; | |
| 1626 if (metrics.width > 0) { | |
| 1627 if (trailing !is null) { | |
| 1628 trailing[0] = (xRun % metrics.width < metrics.width / 2) ? 0 : 1; | |
| 1629 } | |
| 1630 return untranslateOffset(run.start + xRun / metrics.width); | |
| 1631 } | |
| 1632 } | |
| 1633 if (run.tab) { | |
| 1634 if (trailing !is null) trailing[0] = x < (width + run.width / 2) ? 0 : 1; | |
| 1635 return untranslateOffset(run.start); | |
| 1636 } | |
| 1637 int cChars = run.length; | |
| 1638 int cGlyphs = run.glyphCount; | |
| 30 | 1639 int piCP; |
| 1640 int piTrailing; | |
| 29 | 1641 if ((orientation & DWT.RIGHT_TO_LEFT) !is 0) { |
| 1642 xRun = run.width - xRun; | |
| 1643 } | |
| 30 | 1644 int* advances = run.justify !is null ? run.justify : run.advances; |
| 1645 OS.ScriptXtoCP(xRun, cChars, cGlyphs, run.clusters, run.visAttrs, advances, &run.analysis, &piCP, &piTrailing); | |
| 1646 if (trailing !is null) trailing[0] = piTrailing; | |
| 1647 return untranslateOffset(run.start + piCP); | |
| 29 | 1648 } |
| 1649 width += run.width; | |
| 1650 } | |
| 1651 if (trailing !is null) trailing[0] = 0; | |
| 1652 return untranslateOffset(lineOffset[line + 1]); | |
| 1653 } | |
| 1654 | |
| 1655 /** | |
| 1656 * Returns the orientation of the receiver. | |
| 1657 * | |
| 1658 * @return the orientation style | |
| 1659 * | |
| 1660 * @exception DWTException <ul> | |
| 1661 * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> | |
| 1662 * </ul> | |
| 1663 */ | |
| 1664 public int getOrientation () { | |
| 1665 checkLayout(); | |
| 1666 return orientation; | |
| 1667 } | |
| 1668 | |
| 1669 /** | |
| 1670 * Returns the previous offset for the specified offset and movement | |
| 1671 * type. The movement is one of <code>DWT.MOVEMENT_CHAR</code>, | |
| 1672 * <code>DWT.MOVEMENT_CLUSTER</code> or <code>DWT.MOVEMENT_WORD</code>, | |
| 1673 * <code>DWT.MOVEMENT_WORD_END</code> or <code>DWT.MOVEMENT_WORD_START</code>. | |
| 1674 * | |
| 1675 * @param offset the start offset | |
| 1676 * @param movement the movement type | |
| 1677 * @return the previous offset | |
| 1678 * | |
| 1679 * @exception IllegalArgumentException <ul> | |
| 1680 * <li>ERROR_INVALID_ARGUMENT - if the offset is out of range</li> | |
| 1681 * </ul> | |
| 1682 * @exception DWTException <ul> | |
| 1683 * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> | |
| 1684 * </ul> | |
| 1685 * | |
| 1686 * @see #getNextOffset(int, int) | |
| 1687 */ | |
| 1688 public int getPreviousOffset (int offset, int movement) { | |
| 1689 checkLayout(); | |
| 1690 return _getOffset (offset, movement, false); | |
| 1691 } | |
| 1692 | |
| 1693 /** | |
| 1694 * Gets the ranges of text that are associated with a <code>TextStyle</code>. | |
| 1695 * | |
| 1696 * @return the ranges, an array of offsets representing the start and end of each | |
| 1697 * text style. | |
| 1698 * | |
| 1699 * @exception DWTException <ul> | |
| 1700 * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> | |
| 1701 * </ul> | |
| 1702 * | |
| 1703 * @see #getStyles() | |
| 1704 * | |
| 1705 * @since 3.2 | |
| 1706 */ | |
| 1707 public int[] getRanges () { | |
| 1708 checkLayout(); | |
| 1709 int[] result = new int[styles.length * 2]; | |
| 1710 int count = 0; | |
| 1711 for (int i=0; i<styles.length - 1; i++) { | |
| 1712 if (styles[i].style !is null) { | |
| 1713 result[count++] = styles[i].start; | |
| 1714 result[count++] = styles[i + 1].start - 1; | |
| 1715 } | |
| 1716 } | |
| 1717 if (count !is result.length) { | |
| 1718 int[] newResult = new int[count]; | |
| 1719 System.arraycopy(result, 0, newResult, 0, count); | |
| 1720 result = newResult; | |
| 1721 } | |
| 1722 return result; | |
| 1723 } | |
| 1724 | |
| 1725 /** | |
| 1726 * Returns the text segments offsets of the receiver. | |
| 1727 * | |
| 1728 * @return the text segments offsets | |
| 1729 * | |
| 1730 * @exception DWTException <ul> | |
| 1731 * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> | |
| 1732 * </ul> | |
| 1733 */ | |
| 1734 public int[] getSegments () { | |
| 1735 checkLayout(); | |
| 1736 return segments; | |
| 1737 } | |
| 1738 | |
|
212
ab60f3309436
reverted the char[] to String and use the an alias.
Frank Benoit <benoit@tionex.de>
parents:
157
diff
changeset
|
1739 String getSegmentsText() { |
| 29 | 1740 if (segments is null) return text; |
| 1741 int nSegments = segments.length; | |
| 1742 if (nSegments <= 1) return text; | |
| 30 | 1743 int length = text.length; |
| 29 | 1744 if (length is 0) return text; |
| 1745 if (nSegments is 2) { | |
| 1746 if (segments[0] is 0 && segments[1] is length) return text; | |
| 1747 } | |
| 1748 char[] oldChars = new char[length]; | |
| 1749 text.getChars(0, length, oldChars, 0); | |
| 1750 char[] newChars = new char[length + nSegments]; | |
| 1751 int charCount = 0, segmentCount = 0; | |
| 30 | 1752 wchar separator = orientation is DWT.RIGHT_TO_LEFT ? RTL_MARK : LTR_MARK; |
| 29 | 1753 while (charCount < length) { |
| 1754 if (segmentCount < nSegments && charCount is segments[segmentCount]) { | |
| 1755 newChars[charCount + segmentCount++] = separator; | |
| 1756 } else { | |
| 1757 newChars[charCount + segmentCount] = oldChars[charCount++]; | |
| 1758 } | |
| 1759 } | |
| 1760 if (segmentCount < nSegments) { | |
| 1761 segments[segmentCount] = charCount; | |
| 1762 newChars[charCount + segmentCount++] = separator; | |
| 1763 } | |
| 30 | 1764 return newChars[ 0 .. Math.min(charCount + segmentCount, newChars.length)].dup; |
| 29 | 1765 } |
| 1766 | |
| 1767 /** | |
| 1768 * Returns the line spacing of the receiver. | |
| 1769 * | |
| 1770 * @return the line spacing | |
| 1771 * | |
| 1772 * @exception DWTException <ul> | |
| 1773 * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> | |
| 1774 * </ul> | |
| 1775 */ | |
| 1776 public int getSpacing () { | |
| 1777 checkLayout(); | |
| 1778 return lineSpacing; | |
| 1779 } | |
| 1780 | |
| 1781 /** | |
| 1782 * Gets the style of the receiver at the specified character offset. | |
| 1783 * | |
| 1784 * @param offset the text offset | |
| 1785 * @return the style or <code>null</code> if not set | |
| 1786 * | |
| 1787 * @exception IllegalArgumentException <ul> | |
| 1788 * <li>ERROR_INVALID_ARGUMENT - if the character offset is out of range</li> | |
| 1789 * </ul> | |
| 1790 * @exception DWTException <ul> | |
| 1791 * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> | |
| 1792 * </ul> | |
| 1793 */ | |
| 1794 public TextStyle getStyle (int offset) { | |
| 1795 checkLayout(); | |
| 30 | 1796 int length = text.length; |
| 29 | 1797 if (!(0 <= offset && offset < length)) DWT.error(DWT.ERROR_INVALID_RANGE); |
| 1798 for (int i=1; i<styles.length; i++) { | |
| 1799 if (styles[i].start > offset) { | |
| 1800 return styles[i - 1].style; | |
| 1801 } | |
| 1802 } | |
| 1803 return null; | |
| 1804 } | |
| 1805 | |
| 1806 /** | |
| 1807 * Gets all styles of the receiver. | |
| 1808 * | |
| 1809 * @return the styles | |
| 1810 * | |
| 1811 * @exception DWTException <ul> | |
| 1812 * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> | |
| 1813 * </ul> | |
| 1814 * | |
| 1815 * @see #getRanges() | |
| 1816 * | |
| 1817 * @since 3.2 | |
| 1818 */ | |
| 1819 public TextStyle[] getStyles () { | |
| 1820 checkLayout(); | |
| 1821 TextStyle[] result = new TextStyle[styles.length]; | |
| 1822 int count = 0; | |
| 1823 for (int i=0; i<styles.length; i++) { | |
| 1824 if (styles[i].style !is null) { | |
| 1825 result[count++] = styles[i].style; | |
| 1826 } | |
| 1827 } | |
| 1828 if (count !is result.length) { | |
| 1829 TextStyle[] newResult = new TextStyle[count]; | |
| 1830 System.arraycopy(result, 0, newResult, 0, count); | |
| 1831 result = newResult; | |
| 1832 } | |
| 1833 return result; | |
| 1834 } | |
| 1835 | |
| 1836 /** | |
| 1837 * Returns the tab list of the receiver. | |
| 1838 * | |
| 1839 * @return the tab list | |
| 1840 * | |
| 1841 * @exception DWTException <ul> | |
| 1842 * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> | |
| 1843 * </ul> | |
| 1844 */ | |
| 1845 public int[] getTabs () { | |
| 1846 checkLayout(); | |
| 1847 return tabs; | |
| 1848 } | |
| 1849 | |
| 1850 /** | |
| 1851 * Gets the receiver's text, which will be an empty | |
| 1852 * string if it has never been set. | |
| 1853 * | |
| 1854 * @return the receiver's text | |
| 1855 * | |
| 1856 * @exception DWTException <ul> | |
| 1857 * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> | |
| 1858 * </ul> | |
| 1859 */ | |
|
212
ab60f3309436
reverted the char[] to String and use the an alias.
Frank Benoit <benoit@tionex.de>
parents:
157
diff
changeset
|
1860 public String getText () { |
| 29 | 1861 checkLayout(); |
| 1862 return text; | |
| 1863 } | |
| 1864 | |
| 1865 /** | |
| 1866 * Returns the width of the receiver. | |
| 1867 * | |
| 1868 * @return the width | |
| 1869 * | |
| 1870 * @exception DWTException <ul> | |
| 1871 * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> | |
| 1872 * </ul> | |
| 1873 */ | |
| 1874 public int getWidth () { | |
| 1875 checkLayout(); | |
| 1876 return wrapWidth; | |
| 1877 } | |
| 1878 | |
| 1879 /** | |
| 1880 * Returns <code>true</code> if the text layout has been disposed, | |
| 1881 * and <code>false</code> otherwise. | |
| 1882 * <p> | |
| 1883 * This method gets the dispose state for the text layout. | |
| 1884 * When a text layout has been disposed, it is an error to | |
| 1885 * invoke any other method using the text layout. | |
| 1886 * </p> | |
| 1887 * | |
| 1888 * @return <code>true</code> when the text layout is disposed and <code>false</code> otherwise | |
| 1889 */ | |
|
48
9a64a7781bab
Added override and alias, first chunk. Thanks torhu for doing this patch.
Frank Benoit <benoit@tionex.de>
parents:
31
diff
changeset
|
1890 override public bool isDisposed () { |
| 29 | 1891 return device is null; |
| 1892 } | |
| 1893 | |
| 1894 /* | |
| 1895 * Itemize the receiver text | |
| 1896 */ | |
| 1897 StyleItem[] itemize () { | |
| 1898 segmentsText = getSegmentsText(); | |
| 30 | 1899 int length = segmentsText.length; |
| 1900 SCRIPT_CONTROL scriptControl; | |
| 1901 SCRIPT_STATE scriptState; | |
| 29 | 1902 final int MAX_ITEM = length + 1; |
| 1903 | |
| 1904 if ((orientation & DWT.RIGHT_TO_LEFT) !is 0) { | |
| 1905 scriptState.uBidiLevel = 1; | |
| 1906 scriptState.fArabicNumContext = true; | |
| 30 | 1907 SCRIPT_DIGITSUBSTITUTE psds; |
| 1908 OS.ScriptRecordDigitSubstitution(OS.LOCALE_USER_DEFAULT, &psds); | |
| 1909 OS.ScriptApplyDigitSubstitution(&psds, &scriptControl, &scriptState); | |
| 29 | 1910 } |
| 1911 | |
| 30 | 1912 auto hHeap = OS.GetProcessHeap(); |
| 1913 auto pItems = cast(SCRIPT_ITEM*)OS.HeapAlloc(hHeap, OS.HEAP_ZERO_MEMORY, MAX_ITEM * SCRIPT_ITEM.sizeof); | |
| 1914 if (pItems is null) DWT.error(DWT.ERROR_NO_HANDLES); | |
| 1915 int pcItems; | |
| 1916 wchar[] chars = StrToWCHARs( segmentsText ); | |
| 1917 OS.ScriptItemize(chars.ptr, chars.length, MAX_ITEM, &scriptControl, &scriptState, pItems, &pcItems); | |
| 29 | 1918 // if (hr is E_OUTOFMEMORY) //TODO handle it |
| 1919 | |
| 30 | 1920 StyleItem[] runs = merge(pItems, pcItems); |
| 29 | 1921 OS.HeapFree(hHeap, 0, pItems); |
| 1922 return runs; | |
| 1923 } | |
| 1924 | |
| 1925 /* | |
| 1926 * Merge styles ranges and script items | |
| 1927 */ | |
| 30 | 1928 StyleItem[] merge (SCRIPT_ITEM* items, int itemCount) { |
| 1929 int count = 0, start = 0, end = segmentsText.length, itemIndex = 0, styleIndex = 0; | |
| 29 | 1930 StyleItem[] runs = new StyleItem[itemCount + styles.length]; |
| 30 | 1931 SCRIPT_ITEM* scriptItem; |
| 29 | 1932 bool linkBefore = false; |
| 1933 while (start < end) { | |
| 1934 StyleItem item = new StyleItem(); | |
| 1935 item.start = start; | |
| 1936 item.style = styles[styleIndex].style; | |
| 1937 runs[count++] = item; | |
| 30 | 1938 scriptItem = items + itemIndex; |
| 29 | 1939 item.analysis = scriptItem.a; |
| 1940 if (linkBefore) { | |
| 1941 item.analysis.fLinkBefore = true; | |
| 1942 linkBefore = false; | |
| 1943 } | |
| 30 | 1944 //scriptItem.a = new SCRIPT_ANALYSIS(); |
| 1945 scriptItem = items + (itemIndex + 1); | |
| 29 | 1946 int itemLimit = scriptItem.iCharPos; |
| 1947 int styleLimit = translateOffset(styles[styleIndex + 1].start); | |
| 1948 if (styleLimit <= itemLimit) { | |
| 1949 styleIndex++; | |
| 1950 start = styleLimit; | |
| 1951 if (start < itemLimit && 0 < start && start < end) { | |
| 1952 char pChar = segmentsText.charAt(start - 1); | |
| 1953 char tChar = segmentsText.charAt(start); | |
| 1954 if (!Compatibility.isWhitespace(pChar) && !Compatibility.isWhitespace(tChar)) { | |
| 1955 item.analysis.fLinkAfter = true; | |
| 1956 linkBefore = true; | |
| 1957 } | |
| 1958 } | |
| 1959 } | |
| 1960 if (itemLimit <= styleLimit) { | |
| 1961 itemIndex++; | |
| 1962 start = itemLimit; | |
| 1963 } | |
| 1964 item.length = start - item.start; | |
| 1965 } | |
| 1966 StyleItem item = new StyleItem(); | |
| 1967 item.start = end; | |
| 30 | 1968 scriptItem = items + itemCount; |
| 29 | 1969 item.analysis = scriptItem.a; |
| 1970 runs[count++] = item; | |
| 1971 if (runs.length !is count) { | |
| 1972 StyleItem[] result = new StyleItem[count]; | |
| 1973 System.arraycopy(runs, 0, result, 0, count); | |
| 1974 return result; | |
| 1975 } | |
| 1976 return runs; | |
| 1977 } | |
| 1978 | |
| 1979 /* | |
| 1980 * Reorder the run | |
| 1981 */ | |
| 1982 StyleItem[] reorder (StyleItem[] runs, bool terminate) { | |
| 30 | 1983 int length_ = runs.length; |
| 1984 if (length_ <= 1) return runs; | |
| 1985 ubyte[] bidiLevels = new ubyte[length_]; | |
| 1986 for (int i=0; i<length_; i++) { | |
| 29 | 1987 bidiLevels[i] = cast(byte)(runs[i].analysis.s.uBidiLevel & 0x1F); |
| 1988 } | |
| 1989 /* | |
| 1990 * Feature in Windows. If the orientation is RTL Uniscribe will | |
| 1991 * resolve the level of line breaks to 1, this can cause the line | |
| 1992 * break to be reorder to the middle of the line. The fix is to set | |
| 1993 * the level to zero to prevent it to be reordered. | |
| 1994 */ | |
| 30 | 1995 StyleItem lastRun = runs[length_ - 1]; |
| 29 | 1996 if (lastRun.lineBreak && !lastRun.softBreak) { |
| 30 | 1997 bidiLevels[length_ - 1] = 0; |
| 29 | 1998 } |
| 30 | 1999 int[] log2vis = new int[length_]; |
| 2000 OS.ScriptLayout(length_, bidiLevels.ptr, null, log2vis.ptr); | |
| 2001 StyleItem[] result = new StyleItem[length_]; | |
| 2002 for (int i=0; i<length_; i++) { | |
| 29 | 2003 result[log2vis[i]] = runs[i]; |
| 2004 } | |
| 2005 if ((orientation & DWT.RIGHT_TO_LEFT) !is 0) { | |
| 30 | 2006 if (terminate) length_--; |
| 2007 for (int i = 0; i < length_ / 2 ; i++) { | |
| 29 | 2008 StyleItem tmp = result[i]; |
| 30 | 2009 result[i] = result[length_ - i - 1]; |
| 2010 result[length_ - i - 1] = tmp; | |
| 29 | 2011 } |
| 2012 } | |
| 2013 return result; | |
| 2014 } | |
| 2015 | |
| 2016 /** | |
| 2017 * Sets the text alignment for the receiver. The alignment controls | |
| 2018 * how a line of text is positioned horizontally. The argument should | |
| 2019 * be one of <code>DWT.LEFT</code>, <code>DWT.RIGHT</code> or <code>DWT.CENTER</code>. | |
| 2020 * <p> | |
| 2021 * The default alignment is <code>DWT.LEFT</code>. Note that the receiver's | |
| 2022 * width must be set in order to use <code>DWT.RIGHT</code> or <code>DWT.CENTER</code> | |
| 2023 * alignment. | |
| 2024 * </p> | |
| 2025 * | |
| 2026 * @param alignment the new alignment | |
| 2027 * | |
| 2028 * @exception DWTException <ul> | |
| 2029 * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> | |
| 2030 * </ul> | |
| 2031 * | |
| 2032 * @see #setWidth(int) | |
| 2033 */ | |
| 2034 public void setAlignment (int alignment) { | |
| 2035 checkLayout(); | |
| 2036 int mask = DWT.LEFT | DWT.CENTER | DWT.RIGHT; | |
| 2037 alignment &= mask; | |
| 2038 if (alignment is 0) return; | |
| 2039 if ((alignment & DWT.LEFT) !is 0) alignment = DWT.LEFT; | |
| 2040 if ((alignment & DWT.RIGHT) !is 0) alignment = DWT.RIGHT; | |
| 2041 if (this.alignment is alignment) return; | |
| 2042 freeRuns(); | |
| 2043 this.alignment = alignment; | |
| 2044 } | |
| 2045 | |
| 2046 /** | |
| 2047 * Sets the ascent of the receiver. The ascent is distance in pixels | |
| 2048 * from the baseline to the top of the line and it is applied to all | |
| 2049 * lines. The default value is <code>-1</code> which means that the | |
| 2050 * ascent is calculated from the line fonts. | |
| 2051 * | |
| 2052 * @param ascent the new ascent | |
| 2053 * | |
| 2054 * @exception IllegalArgumentException <ul> | |
| 2055 * <li>ERROR_INVALID_ARGUMENT - if the ascent is less than <code>-1</code></li> | |
| 2056 * </ul> | |
| 2057 * @exception DWTException <ul> | |
| 2058 * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> | |
| 2059 * </ul> | |
| 2060 * | |
| 2061 * @see #setDescent(int) | |
| 2062 * @see #getLineMetrics(int) | |
| 2063 */ | |
| 2064 public void setAscent(int ascent) { | |
| 2065 checkLayout(); | |
| 2066 if (ascent < -1) DWT.error(DWT.ERROR_INVALID_ARGUMENT); | |
| 2067 if (this.ascent is ascent) return; | |
| 2068 freeRuns(); | |
| 2069 this.ascent = ascent; | |
| 2070 } | |
| 2071 | |
| 2072 /** | |
| 2073 * Sets the descent of the receiver. The descent is distance in pixels | |
| 2074 * from the baseline to the bottom of the line and it is applied to all | |
| 2075 * lines. The default value is <code>-1</code> which means that the | |
| 2076 * descent is calculated from the line fonts. | |
| 2077 * | |
| 2078 * @param descent the new descent | |
| 2079 * | |
| 2080 * @exception IllegalArgumentException <ul> | |
| 2081 * <li>ERROR_INVALID_ARGUMENT - if the descent is less than <code>-1</code></li> | |
| 2082 * </ul> | |
| 2083 * @exception DWTException <ul> | |
| 2084 * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> | |
| 2085 * </ul> | |
| 2086 * | |
| 2087 * @see #setAscent(int) | |
| 2088 * @see #getLineMetrics(int) | |
| 2089 */ | |
| 2090 public void setDescent(int descent) { | |
| 2091 checkLayout(); | |
| 2092 if (descent < -1) DWT.error(DWT.ERROR_INVALID_ARGUMENT); | |
| 2093 if (this.descent is descent) return; | |
| 2094 freeRuns(); | |
| 2095 this.descent = descent; | |
| 2096 } | |
| 2097 | |
| 2098 /** | |
| 2099 * Sets the default font which will be used by the receiver | |
| 2100 * to draw and measure text. If the | |
| 2101 * argument is null, then a default font appropriate | |
| 2102 * for the platform will be used instead. Note that a text | |
| 2103 * style can override the default font. | |
| 2104 * | |
| 2105 * @param font the new font for the receiver, or null to indicate a default font | |
| 2106 * | |
| 2107 * @exception IllegalArgumentException <ul> | |
| 2108 * <li>ERROR_INVALID_ARGUMENT - if the font has been disposed</li> | |
| 2109 * </ul> | |
| 2110 * @exception DWTException <ul> | |
| 2111 * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> | |
| 2112 * </ul> | |
| 2113 */ | |
| 2114 public void setFont (Font font) { | |
| 2115 checkLayout(); | |
| 2116 if (font !is null && font.isDisposed()) DWT.error(DWT.ERROR_INVALID_ARGUMENT); | |
| 2117 if (this.font is font) return; | |
| 30 | 2118 if (font !is null && font ==/*eq*/ this.font) return; |
| 29 | 2119 freeRuns(); |
| 2120 this.font = font; | |
| 2121 } | |
| 2122 | |
| 2123 /** | |
| 2124 * Sets the indent of the receiver. This indent it applied of the first line of | |
| 2125 * each paragraph. | |
| 2126 * | |
| 2127 * @param indent new indent | |
| 2128 * | |
| 2129 * @exception DWTException <ul> | |
| 2130 * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> | |
| 2131 * </ul> | |
| 2132 * | |
| 2133 * @since 3.2 | |
| 2134 */ | |
| 2135 public void setIndent (int indent) { | |
| 2136 checkLayout(); | |
| 2137 if (indent < 0) return; | |
| 2138 if (this.indent is indent) return; | |
| 2139 freeRuns(); | |
| 2140 this.indent = indent; | |
| 2141 } | |
| 2142 | |
| 2143 /** | |
| 2144 * Sets the justification of the receiver. Note that the receiver's | |
| 2145 * width must be set in order to use justification. | |
| 2146 * | |
| 2147 * @param justify new justify | |
| 2148 * | |
| 2149 * @exception DWTException <ul> | |
| 2150 * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> | |
| 2151 * </ul> | |
| 2152 * | |
| 2153 * @since 3.2 | |
| 2154 */ | |
| 2155 public void setJustify (bool justify) { | |
| 2156 checkLayout(); | |
| 2157 if (this.justify is justify) return; | |
| 2158 freeRuns(); | |
| 2159 this.justify = justify; | |
| 2160 } | |
| 2161 | |
| 2162 /** | |
| 2163 * Sets the orientation of the receiver, which must be one | |
| 2164 * of <code>DWT.LEFT_TO_RIGHT</code> or <code>DWT.RIGHT_TO_LEFT</code>. | |
| 2165 * | |
| 2166 * @param orientation new orientation style | |
| 2167 * | |
| 2168 * @exception DWTException <ul> | |
| 2169 * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> | |
| 2170 * </ul> | |
| 2171 */ | |
| 2172 public void setOrientation (int orientation) { | |
| 2173 checkLayout(); | |
| 2174 int mask = DWT.LEFT_TO_RIGHT | DWT.RIGHT_TO_LEFT; | |
| 2175 orientation &= mask; | |
| 2176 if (orientation is 0) return; | |
| 2177 if ((orientation & DWT.LEFT_TO_RIGHT) !is 0) orientation = DWT.LEFT_TO_RIGHT; | |
| 2178 if (this.orientation is orientation) return; | |
| 2179 this.orientation = orientation; | |
| 2180 freeRuns(); | |
| 2181 } | |
| 2182 | |
| 2183 /** | |
| 2184 * Sets the offsets of the receiver's text segments. Text segments are used to | |
| 2185 * override the default behaviour of the bidirectional algorithm. | |
| 2186 * Bidirectional reordering can happen within a text segment but not | |
| 2187 * between two adjacent segments. | |
| 2188 * <p> | |
| 2189 * Each text segment is determined by two consecutive offsets in the | |
| 2190 * <code>segments</code> arrays. The first element of the array should | |
| 2191 * always be zero and the last one should always be equals to length of | |
| 2192 * the text. | |
| 2193 * </p> | |
| 2194 * | |
| 2195 * @param segments the text segments offset | |
| 2196 * | |
| 2197 * @exception DWTException <ul> | |
| 2198 * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> | |
| 2199 * </ul> | |
| 2200 */ | |
| 2201 public void setSegments(int[] segments) { | |
| 2202 checkLayout(); | |
| 2203 if (this.segments is null && segments is null) return; | |
| 2204 if (this.segments !is null && segments !is null) { | |
| 2205 if (this.segments.length is segments.length) { | |
| 2206 int i; | |
| 2207 for (i = 0; i <segments.length; i++) { | |
| 2208 if (this.segments[i] !is segments[i]) break; | |
| 2209 } | |
| 2210 if (i is segments.length) return; | |
| 2211 } | |
| 2212 } | |
| 2213 freeRuns(); | |
| 2214 this.segments = segments; | |
| 2215 } | |
| 2216 | |
| 2217 /** | |
| 2218 * Sets the line spacing of the receiver. The line spacing | |
| 2219 * is the space left between lines. | |
| 2220 * | |
| 2221 * @param spacing the new line spacing | |
| 2222 * | |
| 2223 * @exception IllegalArgumentException <ul> | |
| 2224 * <li>ERROR_INVALID_ARGUMENT - if the spacing is negative</li> | |
| 2225 * </ul> | |
| 2226 * @exception DWTException <ul> | |
| 2227 * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> | |
| 2228 * </ul> | |
| 2229 */ | |
| 2230 public void setSpacing (int spacing) { | |
| 2231 checkLayout(); | |
| 2232 if (spacing < 0) DWT.error(DWT.ERROR_INVALID_ARGUMENT); | |
| 2233 if (this.lineSpacing is spacing) return; | |
| 2234 freeRuns(); | |
| 2235 this.lineSpacing = spacing; | |
| 2236 } | |
| 2237 | |
| 2238 /** | |
| 2239 * Sets the style of the receiver for the specified range. Styles previously | |
| 2240 * set for that range will be overwritten. The start and end offsets are | |
| 2241 * inclusive and will be clamped if out of range. | |
| 2242 * | |
| 2243 * @param style the style | |
| 2244 * @param start the start offset | |
| 2245 * @param end the end offset | |
| 2246 * | |
| 2247 * @exception DWTException <ul> | |
| 2248 * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> | |
| 2249 * </ul> | |
| 2250 */ | |
| 2251 public void setStyle (TextStyle style, int start, int end) { | |
| 2252 checkLayout(); | |
| 30 | 2253 int length_ = text.length; |
| 2254 if (length_ is 0) return; | |
| 29 | 2255 if (start > end) return; |
| 30 | 2256 start = Math.min(Math.max(0, start), length_ - 1); |
| 2257 end = Math.min(Math.max(0, end), length_ - 1); | |
| 29 | 2258 int low = -1; |
| 2259 int high = styles.length; | |
| 2260 while (high - low > 1) { | |
| 2261 int index = (high + low) / 2; | |
| 2262 if (styles[index + 1].start > start) { | |
| 2263 high = index; | |
| 2264 } else { | |
| 2265 low = index; | |
| 2266 } | |
| 2267 } | |
| 2268 if (0 <= high && high < styles.length) { | |
| 2269 StyleItem item = styles[high]; | |
| 2270 if (item.start is start && styles[high + 1].start - 1 is end) { | |
| 2271 if (style is null) { | |
| 2272 if (item.style is null) return; | |
| 2273 } else { | |
| 30 | 2274 if (style ==/*eq*/ item.style) return; |
| 29 | 2275 } |
| 2276 } | |
| 2277 } | |
| 2278 freeRuns(); | |
| 2279 int modifyStart = high; | |
| 2280 int modifyEnd = modifyStart; | |
| 2281 while (modifyEnd < styles.length) { | |
| 2282 if (styles[modifyEnd + 1].start > end) break; | |
| 2283 modifyEnd++; | |
| 2284 } | |
| 2285 if (modifyStart is modifyEnd) { | |
| 2286 int styleStart = styles[modifyStart].start; | |
| 2287 int styleEnd = styles[modifyEnd + 1].start - 1; | |
| 2288 if (styleStart is start && styleEnd is end) { | |
| 2289 styles[modifyStart].style = style; | |
| 2290 return; | |
| 2291 } | |
| 2292 if (styleStart !is start && styleEnd !is end) { | |
| 2293 StyleItem[] newStyles = new StyleItem[styles.length + 2]; | |
| 2294 System.arraycopy(styles, 0, newStyles, 0, modifyStart + 1); | |
| 2295 StyleItem item = new StyleItem(); | |
| 2296 item.start = start; | |
| 2297 item.style = style; | |
| 2298 newStyles[modifyStart + 1] = item; | |
| 2299 item = new StyleItem(); | |
| 2300 item.start = end + 1; | |
| 2301 item.style = styles[modifyStart].style; | |
| 2302 newStyles[modifyStart + 2] = item; | |
| 2303 System.arraycopy(styles, modifyEnd + 1, newStyles, modifyEnd + 3, styles.length - modifyEnd - 1); | |
| 2304 styles = newStyles; | |
| 2305 return; | |
| 2306 } | |
| 2307 } | |
| 2308 if (start is styles[modifyStart].start) modifyStart--; | |
| 2309 if (end is styles[modifyEnd + 1].start - 1) modifyEnd++; | |
| 2310 int newLength = styles.length + 1 - (modifyEnd - modifyStart - 1); | |
| 2311 StyleItem[] newStyles = new StyleItem[newLength]; | |
| 2312 System.arraycopy(styles, 0, newStyles, 0, modifyStart + 1); | |
| 2313 StyleItem item = new StyleItem(); | |
| 2314 item.start = start; | |
| 2315 item.style = style; | |
| 2316 newStyles[modifyStart + 1] = item; | |
| 2317 styles[modifyEnd].start = end + 1; | |
| 2318 System.arraycopy(styles, modifyEnd, newStyles, modifyStart + 2, styles.length - modifyEnd); | |
| 2319 styles = newStyles; | |
| 2320 } | |
| 2321 | |
| 2322 /** | |
| 2323 * Sets the receiver's tab list. Each value in the tab list specifies | |
| 2324 * the space in pixels from the origin of the text layout to the respective | |
| 2325 * tab stop. The last tab stop width is repeated continuously. | |
| 2326 * | |
| 2327 * @param tabs the new tab list | |
| 2328 * | |
| 2329 * @exception DWTException <ul> | |
| 2330 * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> | |
| 2331 * </ul> | |
| 2332 */ | |
| 2333 public void setTabs (int[] tabs) { | |
| 2334 checkLayout(); | |
| 2335 if (this.tabs is null && tabs is null) return; | |
| 2336 if (this.tabs !is null && tabs !is null) { | |
| 2337 if (this.tabs.length is tabs.length) { | |
| 2338 int i; | |
| 2339 for (i = 0; i <tabs.length; i++) { | |
| 2340 if (this.tabs[i] !is tabs[i]) break; | |
| 2341 } | |
| 2342 if (i is tabs.length) return; | |
| 2343 } | |
| 2344 } | |
| 2345 freeRuns(); | |
| 2346 this.tabs = tabs; | |
| 2347 } | |
| 2348 | |
| 2349 /** | |
| 2350 * Sets the receiver's text. | |
| 2351 * | |
| 2352 * @param text the new text | |
| 2353 * | |
| 2354 * @exception IllegalArgumentException <ul> | |
| 2355 * <li>ERROR_NULL_ARGUMENT - if the text is null</li> | |
| 2356 * </ul> | |
| 2357 * @exception DWTException <ul> | |
| 2358 * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> | |
| 2359 * </ul> | |
| 2360 */ | |
|
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parents:
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diff
changeset
|
2361 public void setText (String text) { |
| 29 | 2362 checkLayout(); |
|
157
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TextLayout allow null for setText
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parents:
81
diff
changeset
|
2363 //PORTING_CHANGE: allow null argument |
|
f8001bf383d2
TextLayout allow null for setText
Frank Benoit <benoit@tionex.de>
parents:
81
diff
changeset
|
2364 //if (text is null) DWT.error(DWT.ERROR_NULL_ARGUMENT); |
| 30 | 2365 if (text==/*eq*/this.text) return; |
| 29 | 2366 freeRuns(); |
| 2367 this.text = text; | |
| 2368 styles = new StyleItem[2]; | |
| 2369 styles[0] = new StyleItem(); | |
| 2370 styles[1] = new StyleItem(); | |
| 30 | 2371 styles[1].start = text.length; |
| 29 | 2372 } |
| 2373 | |
| 2374 /** | |
| 2375 * Sets the line width of the receiver, which determines how | |
| 2376 * text should be wrapped and aligned. The default value is | |
| 2377 * <code>-1</code> which means wrapping is disabled. | |
| 2378 * | |
| 2379 * @param width the new width | |
| 2380 * | |
| 2381 * @exception IllegalArgumentException <ul> | |
| 2382 * <li>ERROR_INVALID_ARGUMENT - if the width is <code>0</code> or less than <code>-1</code></li> | |
| 2383 * </ul> | |
| 2384 * @exception DWTException <ul> | |
| 2385 * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> | |
| 2386 * </ul> | |
| 2387 * | |
| 2388 * @see #setAlignment(int) | |
| 2389 */ | |
| 2390 public void setWidth (int width) { | |
| 2391 checkLayout(); | |
| 2392 if (width < -1 || width is 0) DWT.error(DWT.ERROR_INVALID_ARGUMENT); | |
| 2393 if (this.wrapWidth is width) return; | |
| 2394 freeRuns(); | |
| 2395 this.wrapWidth = width; | |
| 2396 } | |
| 2397 | |
| 30 | 2398 bool shape (HDC hdc, StyleItem run, char[] chars, int[] glyphCount, int maxGlyphs) { |
| 2399 wchar[] wchars = StrToWCHARs( chars ); | |
| 2400 auto hr = OS.ScriptShape(hdc, run.psc, wchars.ptr, wchars.length, maxGlyphs, &run.analysis, run.glyphs, run.clusters, run.visAttrs, glyphCount.ptr); | |
| 29 | 2401 run.glyphCount = glyphCount[0]; |
| 2402 if (hr !is OS.USP_E_SCRIPT_NOT_IN_FONT) { | |
| 30 | 2403 SCRIPT_FONTPROPERTIES fp; |
| 29 | 2404 fp.cBytes = SCRIPT_FONTPROPERTIES.sizeof; |
| 30 | 2405 OS.ScriptGetFontProperties(hdc, run.psc, &fp); |
| 2406 ushort[] glyphs = run.glyphs[ 0 .. glyphCount[0] ]; | |
| 29 | 2407 int i; |
| 2408 for (i = 0; i < glyphs.length; i++) { | |
| 2409 if (glyphs[i] is fp.wgDefault) break; | |
| 2410 } | |
| 2411 if (i is glyphs.length) return true; | |
| 2412 } | |
| 30 | 2413 if (run.psc !is null) { |
| 29 | 2414 OS.ScriptFreeCache(run.psc); |
| 2415 glyphCount[0] = 0; | |
| 30 | 2416 *cast(int*)run.psc = 0; |
| 29 | 2417 } |
| 2418 run.glyphCount = 0; | |
| 2419 return false; | |
| 2420 } | |
| 2421 | |
| 2422 /* | |
| 2423 * Generate glyphs for one Run. | |
| 2424 */ | |
| 2425 void shape (HDC hdc, StyleItem run) { | |
| 2426 int[] buffer = new int[1]; | |
| 2427 char[] chars = new char[run.length]; | |
| 2428 segmentsText.getChars(run.start, run.start + run.length, chars, 0); | |
| 30 | 2429 wchar[] wchars = StrToWCHARs( chars ); |
| 29 | 2430 int maxGlyphs = (chars.length * 3 / 2) + 16; |
| 30 | 2431 auto hHeap = OS.GetProcessHeap(); |
| 2432 run.glyphs = cast(ushort*)OS.HeapAlloc(hHeap, OS.HEAP_ZERO_MEMORY, maxGlyphs * 2); | |
| 2433 if (run.glyphs is null) DWT.error(DWT.ERROR_NO_HANDLES); | |
| 2434 run.clusters = cast(WORD*)OS.HeapAlloc(hHeap, OS.HEAP_ZERO_MEMORY, maxGlyphs * 2); | |
| 2435 if (run.clusters is null) DWT.error(DWT.ERROR_NO_HANDLES); | |
| 2436 run.visAttrs = cast(SCRIPT_VISATTR*)OS.HeapAlloc(hHeap, OS.HEAP_ZERO_MEMORY, maxGlyphs * SCRIPT_VISATTR_SIZEOF); | |
| 2437 if (run.visAttrs is null) DWT.error(DWT.ERROR_NO_HANDLES); | |
| 2438 run.psc = cast(SCRIPT_CACHE*)OS.HeapAlloc(hHeap, OS.HEAP_ZERO_MEMORY, 4); | |
| 2439 if (run.psc is null) DWT.error(DWT.ERROR_NO_HANDLES); | |
| 29 | 2440 if (!shape(hdc, run, chars, buffer, maxGlyphs)) { |
| 30 | 2441 if (mLangFontLink2 !is null) { |
| 2442 int dwCodePages; | |
| 2443 int cchCodePages; | |
| 29 | 2444 /* GetStrCodePages() */ |
| 30 | 2445 OS.VtblCall(4, mLangFontLink2, cast(int)wchars.ptr, wchars.length, 0, cast(int)&dwCodePages, cast(int)&cchCodePages); |
| 2446 HFONT hNewFont; | |
| 29 | 2447 /* MapFont() */ |
| 30 | 2448 if (OS.VtblCall(10, mLangFontLink2, cast(int)hdc, dwCodePages, cast(int)wchars[0], cast(int)hNewFont) is OS.S_OK) { |
| 2449 auto hFont = OS.SelectObject(hdc, hNewFont); | |
| 29 | 2450 if (shape(hdc, run, chars, buffer, maxGlyphs)) { |
| 30 | 2451 run.fallbackFont = hNewFont; |
| 29 | 2452 } else { |
| 2453 /* ReleaseFont() */ | |
| 30 | 2454 OS.VtblCall(8, mLangFontLink2, cast(int)hNewFont); |
| 29 | 2455 OS.SelectObject(hdc, hFont); |
| 30 | 2456 SCRIPT_PROPERTIES* properties; |
| 2457 properties = device.scripts[run.analysis.eScript]; | |
| 29 | 2458 if (properties.fPrivateUseArea) { |
| 2459 run.analysis.fNoGlyphIndex = true; | |
| 2460 } | |
| 30 | 2461 OS.ScriptShape(hdc, run.psc, wchars.ptr, wchars.length, maxGlyphs, &run.analysis, run.glyphs, run.clusters, run.visAttrs, buffer.ptr); |
| 29 | 2462 run.glyphCount = buffer[0]; |
| 2463 } | |
| 2464 } | |
| 2465 } | |
| 2466 } | |
| 30 | 2467 ABC abc; |
| 2468 run.advances = cast(int*)OS.HeapAlloc(hHeap, OS.HEAP_ZERO_MEMORY, run.glyphCount * 4); | |
| 2469 if (run.advances is null) DWT.error(DWT.ERROR_NO_HANDLES); | |
| 2470 run.goffsets = cast(GOFFSET*)OS.HeapAlloc(hHeap, OS.HEAP_ZERO_MEMORY, run.glyphCount * GOFFSET_SIZEOF); | |
| 2471 if (run.goffsets is null) DWT.error(DWT.ERROR_NO_HANDLES); | |
| 2472 OS.ScriptPlace(hdc, run.psc, run.glyphs, run.glyphCount, run.visAttrs, &run.analysis, run.advances, run.goffsets, &abc); | |
| 29 | 2473 if (run.style !is null && run.style.metrics !is null) { |
| 2474 GlyphMetrics metrics = run.style.metrics; | |
| 2475 /* | |
| 2476 * Bug in Windows, on a Japanese machine, Uniscribe returns glyphcount | |
| 2477 * equals zero for FFFC (possibly other unicode code points), the fix | |
| 2478 * is to make sure the glyph is at least one pixel wide. | |
| 2479 */ | |
| 2480 run.width = metrics.width * Math.max (1, run.glyphCount); | |
| 2481 run.ascent = metrics.ascent; | |
| 2482 run.descent = metrics.descent; | |
| 2483 run.leading = 0; | |
| 2484 } else { | |
| 30 | 2485 run.width = abc.abcA + abc.abcB + abc.abcC; |
| 29 | 2486 TEXTMETRIC lptm; |
| 2487 OS.GetTextMetrics(hdc, &lptm); | |
| 2488 run.ascent = lptm.tmAscent; | |
| 2489 run.descent = lptm.tmDescent; | |
| 2490 run.leading = lptm.tmInternalLeading; | |
| 2491 } | |
| 2492 if (run.style !is null) { | |
| 2493 run.ascent += run.style.rise; | |
| 2494 run.descent -= +run.style.rise; | |
| 2495 } | |
| 2496 } | |
| 2497 | |
| 2498 int validadeOffset(int offset, int step) { | |
| 2499 offset += step; | |
| 2500 if (segments !is null && segments.length > 2) { | |
| 2501 for (int i = 0; i < segments.length; i++) { | |
| 2502 if (translateOffset(segments[i]) - 1 is offset) { | |
| 2503 offset += step; | |
| 2504 break; | |
| 2505 } | |
| 2506 } | |
| 2507 } | |
| 2508 return offset; | |
| 2509 } | |
| 2510 | |
| 2511 /** | |
| 2512 * Returns a string containing a concise, human-readable | |
| 2513 * description of the receiver. | |
| 2514 * | |
| 2515 * @return a string representation of the receiver | |
| 2516 */ | |
|
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parents:
157
diff
changeset
|
2517 override public String toString () { |
| 29 | 2518 if (isDisposed()) return "TextLayout {*DISPOSED*}"; |
| 2519 return "TextLayout {}"; | |
| 2520 } | |
| 2521 | |
| 2522 int translateOffset(int offset) { | |
| 2523 if (segments is null) return offset; | |
| 2524 int nSegments = segments.length; | |
| 2525 if (nSegments <= 1) return offset; | |
| 30 | 2526 int length_ = text.length; |
| 2527 if (length_ is 0) return offset; | |
| 29 | 2528 if (nSegments is 2) { |
| 30 | 2529 if (segments[0] is 0 && segments[1] is length_) return offset; |
| 29 | 2530 } |
| 2531 for (int i = 0; i < nSegments && offset - i >= segments[i]; i++) { | |
| 2532 offset++; | |
| 2533 } | |
| 2534 return offset; | |
| 2535 } | |
| 2536 | |
| 2537 int untranslateOffset(int offset) { | |
| 2538 if (segments is null) return offset; | |
| 2539 int nSegments = segments.length; | |
| 2540 if (nSegments <= 1) return offset; | |
| 30 | 2541 int length_ = text.length; |
| 2542 if (length_ is 0) return offset; | |
| 29 | 2543 if (nSegments is 2) { |
| 30 | 2544 if (segments[0] is 0 && segments[1] is length_) return offset; |
| 29 | 2545 } |
| 2546 for (int i = 0; i < nSegments && offset > segments[i]; i++) { | |
| 2547 offset--; | |
| 2548 } | |
| 2549 return offset; | |
| 2550 } | |
| 2551 } |