Mercurial > projects > dwt-win
annotate dwt/graphics/TextLayout.d @ 48:9a64a7781bab
Added override and alias, first chunk. Thanks torhu for doing this patch.
| author | Frank Benoit <benoit@tionex.de> |
|---|---|
| date | Sun, 03 Feb 2008 01:14:54 +0100 |
| parents | 92c102dd64a3 |
| children | 0405e18fec7f |
| 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; | |
| 55 char[] text, segmentsText; | |
| 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; | |
| 75 static byte[16] CLSID_CMultiLanguage; | |
| 76 static byte[16] IID_IMLangFontLink2; | |
| 77 static this() { | |
| 78 OS.IIDFromString("{275c23e2-3747-11d0-9fea-00aa003f8646}\0".toCharArray().ptr, CLSID_CMultiLanguage.ptr); | |
| 79 OS.IIDFromString("{DCCFC162-2B38-11d2-B7EC-00C04F8F5D9A}\0".toCharArray().ptr, IID_IMLangFontLink2.ptr); | |
| 80 } | |
| 81 | |
| 82 class StyleItem { | |
| 83 TextStyle style; | |
| 84 int start, length; | |
| 85 bool lineBreak, softBreak, tab; | |
| 86 | |
| 87 /*Script cache and analysis */ | |
| 88 SCRIPT_ANALYSIS analysis; | |
| 89 SCRIPT_CACHE* psc; | |
| 90 | |
| 91 /*Shape info (malloc when the run is shaped) */ | |
| 92 WORD* glyphs; | |
| 93 int glyphCount; | |
| 94 WORD* clusters; | |
| 95 SCRIPT_VISATTR* visAttrs; | |
| 96 | |
| 97 /*Place info (malloc when the run is placed) */ | |
| 98 int* advances; | |
| 30 | 99 GOFFSET* goffsets; |
| 100 int width; | |
| 101 int ascent; | |
| 102 int descent; | |
| 103 int leading; | |
| 104 int x; | |
| 29 | 105 |
| 106 /* Justify info (malloc during computeRuns) */ | |
| 107 int* justify; | |
| 108 | |
| 109 /* ScriptBreak */ | |
| 110 SCRIPT_LOGATTR* psla; | |
| 111 | |
| 30 | 112 HFONT fallbackFont; |
| 29 | 113 |
| 114 void free() { | |
| 115 auto hHeap = OS.GetProcessHeap(); | |
| 116 if (psc !is null) { | |
| 117 OS.ScriptFreeCache (psc); | |
| 118 OS.HeapFree(hHeap, 0, psc); | |
| 119 psc = null; | |
| 120 } | |
| 121 if (glyphs !is null) { | |
| 122 OS.HeapFree(hHeap, 0, glyphs); | |
| 123 glyphs = null; | |
| 124 glyphCount = 0; | |
| 125 } | |
| 126 if (clusters !is null) { | |
| 127 OS.HeapFree(hHeap, 0, clusters); | |
| 128 clusters = null; | |
| 129 } | |
| 130 if (visAttrs !is null) { | |
| 131 OS.HeapFree(hHeap, 0, visAttrs); | |
| 132 visAttrs = null; | |
| 133 } | |
| 134 if (advances !is null) { | |
| 135 OS.HeapFree(hHeap, 0, advances); | |
| 136 advances = null; | |
| 137 } | |
| 138 if (goffsets !is null) { | |
| 139 OS.HeapFree(hHeap, 0, goffsets); | |
| 140 goffsets = null; | |
| 141 } | |
| 142 if (justify !is null) { | |
| 143 OS.HeapFree(hHeap, 0, justify); | |
| 144 justify = null; | |
| 145 } | |
| 146 if (psla !is null) { | |
| 147 OS.HeapFree(hHeap, 0, psla); | |
| 148 psla = null; | |
| 149 } | |
| 150 if (fallbackFont !is null) { | |
| 30 | 151 if (mLangFontLink2 !is null) { |
| 29 | 152 /* ReleaseFont() */ |
| 30 | 153 OS.VtblCall(8, mLangFontLink2, cast(int)fallbackFont); |
| 29 | 154 } |
| 155 fallbackFont = null; | |
| 156 } | |
| 30 | 157 width = 0; |
| 158 ascent = 0; | |
| 159 descent = 0; | |
| 160 x = 0; | |
| 29 | 161 lineBreak = softBreak = false; |
| 162 } | |
|
48
9a64a7781bab
Added override and alias, first chunk. Thanks torhu for doing this patch.
Frank Benoit <benoit@tionex.de>
parents:
31
diff
changeset
|
163 override public char[] toString () { |
| 29 | 164 return Format( "StyleItem {{{}, {}}", start, style ); |
| 165 } | |
| 166 } | |
| 167 | |
| 168 /** | |
| 169 * Constructs a new instance of this class on the given device. | |
| 170 * <p> | |
| 171 * You must dispose the text layout when it is no longer required. | |
| 172 * </p> | |
| 173 * | |
| 174 * @param device the device on which to allocate the text layout | |
| 175 * | |
| 176 * @exception IllegalArgumentException <ul> | |
| 177 * <li>ERROR_NULL_ARGUMENT - if device is null and there is no current device</li> | |
| 178 * </ul> | |
| 179 * | |
| 180 * @see #dispose() | |
| 181 */ | |
| 182 public this (Device device) { | |
| 183 if (device is null) device = Device.getDevice(); | |
| 184 if (device is null) DWT.error(DWT.ERROR_NULL_ARGUMENT); | |
| 185 this.device = device; | |
| 186 wrapWidth = ascent = descent = -1; | |
| 187 lineSpacing = 0; | |
| 188 orientation = DWT.LEFT_TO_RIGHT; | |
| 189 styles = new StyleItem[2]; | |
| 190 styles[0] = new StyleItem(); | |
| 191 styles[1] = new StyleItem(); | |
| 192 text = ""; //$NON-NLS-1$ | |
| 30 | 193 void* ppv; |
| 194 OS.OleInitialize(null); | |
| 195 if (OS.CoCreateInstance(CLSID_CMultiLanguage.ptr, null, OS.CLSCTX_INPROC_SERVER, IID_IMLangFontLink2.ptr, cast(void*)&ppv) is OS.S_OK) { | |
| 196 mLangFontLink2 = ppv; | |
| 29 | 197 } |
| 198 if (device.tracking) device.new_Object(this); | |
| 199 } | |
| 200 | |
| 201 void breakRun(StyleItem run) { | |
| 30 | 202 if (run.psla !is null) return; |
| 203 wchar[] chars = StrToWCHARs( segmentsText[ run.start .. run.start + run.length ] ); | |
| 204 auto hHeap = OS.GetProcessHeap(); | |
| 205 run.psla = cast(SCRIPT_LOGATTR*)OS.HeapAlloc(hHeap, OS.HEAP_ZERO_MEMORY, SCRIPT_LOGATTR.sizeof * chars.length); | |
| 206 if (run.psla is null) DWT.error(DWT.ERROR_NO_HANDLES); | |
| 207 OS.ScriptBreak(chars.ptr, chars.length, &run.analysis, run.psla); | |
| 29 | 208 } |
| 209 | |
| 30 | 210 void checkItem (HDC hDC, StyleItem item) { |
| 211 if (item.fallbackFont !is null) { | |
| 29 | 212 /* |
| 213 * Feature in Windows. The fallback font returned by the MLang service | |
| 214 * can be disposed by some other client running in the same thread. | |
| 215 * For example, disposing a Browser widget internally releases all fonts | |
| 216 * in the MLang cache. The fix is to use GetObject() to detect if the | |
| 217 * font was disposed and reshape the run. | |
| 218 */ | |
| 219 LOGFONT logFont; | |
| 30 | 220 if (OS.GetObject( item.fallbackFont, LOGFONT.sizeof, &logFont) is 0) { |
| 29 | 221 item.free(); |
| 222 OS.SelectObject(hDC, getItemFont(item)); | |
| 223 shape(hDC, item); | |
| 224 } | |
| 225 } | |
| 226 } | |
| 227 | |
| 228 void checkLayout () { | |
| 229 if (isDisposed()) DWT.error(DWT.ERROR_GRAPHIC_DISPOSED); | |
| 230 } | |
| 231 | |
| 232 /* | |
| 233 * Compute the runs: itemize, shape, place, and reorder the runs. | |
| 234 * Break paragraphs into lines, wraps the text, and initialize caches. | |
| 235 */ | |
| 236 void computeRuns (GC gc) { | |
| 237 if (runs !is null) return; | |
| 30 | 238 auto hDC = gc !is null ? gc.handle : device.internal_new_GC(null); |
| 239 auto srcHdc = OS.CreateCompatibleDC(hDC); | |
| 29 | 240 allRuns = itemize(); |
| 241 for (int i=0; i<allRuns.length - 1; i++) { | |
| 242 StyleItem run = allRuns[i]; | |
| 243 OS.SelectObject(srcHdc, getItemFont(run)); | |
| 244 shape(srcHdc, run); | |
| 245 } | |
| 30 | 246 SCRIPT_LOGATTR* logAttr; |
| 247 SCRIPT_PROPERTIES* properties; | |
| 29 | 248 int lineWidth = indent, lineStart = 0, lineCount = 1; |
| 249 for (int i=0; i<allRuns.length - 1; i++) { | |
| 250 StyleItem run = allRuns[i]; | |
| 251 if (run.length is 1) { | |
| 252 char ch = segmentsText.charAt(run.start); | |
| 253 switch (ch) { | |
| 254 case '\t': { | |
| 255 run.tab = true; | |
| 256 if (tabs is null) break; | |
| 257 int tabsLength = tabs.length, j; | |
| 258 for (j = 0; j < tabsLength; j++) { | |
| 259 if (tabs[j] > lineWidth) { | |
| 260 run.width = tabs[j] - lineWidth; | |
| 261 break; | |
| 262 } | |
| 263 } | |
| 264 if (j is tabsLength) { | |
| 265 int tabX = tabs[tabsLength-1]; | |
| 266 int lastTabWidth = tabsLength > 1 ? tabs[tabsLength-1] - tabs[tabsLength-2] : tabs[0]; | |
| 267 if (lastTabWidth > 0) { | |
| 268 while (tabX <= lineWidth) tabX += lastTabWidth; | |
| 269 run.width = tabX - lineWidth; | |
| 270 } | |
| 271 } | |
| 272 break; | |
| 273 } | |
| 274 case '\n': { | |
| 275 run.lineBreak = true; | |
| 276 break; | |
| 277 } | |
| 278 case '\r': { | |
| 279 run.lineBreak = true; | |
| 280 StyleItem next = allRuns[i + 1]; | |
| 281 if (next.length !is 0 && segmentsText.charAt(next.start) is '\n') { | |
| 282 run.length += 1; | |
| 283 next.free(); | |
| 284 i++; | |
| 285 } | |
| 286 break; | |
| 287 } | |
| 288 } | |
| 289 } | |
| 290 if (wrapWidth !is -1 && lineWidth + run.width > wrapWidth && !run.tab) { | |
| 291 int start = 0; | |
| 292 int[] piDx = new int[run.length]; | |
| 293 if (run.style !is null && run.style.metrics !is null) { | |
| 294 piDx[0] = run.width; | |
| 295 } else { | |
| 30 | 296 OS.ScriptGetLogicalWidths(&run.analysis, run.length, run.glyphCount, run.advances, run.clusters, run.visAttrs, piDx.ptr); |
| 29 | 297 } |
| 298 int width = 0, maxWidth = wrapWidth - lineWidth; | |
| 299 while (width + piDx[start] < maxWidth) { | |
| 300 width += piDx[start++]; | |
| 301 } | |
| 302 int firstStart = start; | |
| 303 int firstIndice = i; | |
| 304 while (i >= lineStart) { | |
| 305 breakRun(run); | |
| 306 while (start >= 0) { | |
| 30 | 307 logAttr = run.psla + start; |
| 308 //OS.MoveMemory(logAttr, run.psla + (start * SCRIPT_LOGATTR.sizeof), SCRIPT_LOGATTR.sizeof); | |
| 29 | 309 if (logAttr.fSoftBreak || logAttr.fWhiteSpace) break; |
| 310 start--; | |
| 311 } | |
| 312 | |
| 313 /* | |
| 314 * Bug in Windows. For some reason Uniscribe sets the fSoftBreak flag for the first letter | |
| 315 * after a letter with an accent. This cause a break line to be set in the middle of a word. | |
| 316 * The fix is to detect the case and ignore fSoftBreak forcing the algorithm keep searching. | |
| 317 */ | |
| 318 if (start is 0 && i !is lineStart && !run.tab) { | |
| 319 if (logAttr.fSoftBreak && !logAttr.fWhiteSpace) { | |
| 30 | 320 properties = device.scripts[run.analysis.eScript]; |
| 321 //OS.MoveMemory(properties, device.scripts[run.analysis.eScript], SCRIPT_PROPERTIES.sizeof); | |
| 29 | 322 int langID = properties.langid; |
| 323 StyleItem pRun = allRuns[i - 1]; | |
| 30 | 324 //OS.MoveMemory(properties, device.scripts[pRun.analysis.eScript], SCRIPT_PROPERTIES.sizeof); |
| 29 | 325 if (properties.langid is langID || langID is OS.LANG_NEUTRAL || properties.langid is OS.LANG_NEUTRAL) { |
| 326 breakRun(pRun); | |
| 30 | 327 logAttr = pRun.psla + (pRun.length - 1); |
| 328 //OS.MoveMemory(logAttr, pRun.psla + ((pRun.length - 1) * SCRIPT_LOGATTR.sizeof), SCRIPT_LOGATTR.sizeof); | |
| 29 | 329 if (!logAttr.fWhiteSpace) start = -1; |
| 330 } | |
| 331 } | |
| 332 } | |
| 333 if (start >= 0 || i is lineStart) break; | |
| 334 run = allRuns[--i]; | |
| 335 start = run.length - 1; | |
| 336 } | |
| 337 if (start is 0 && i !is lineStart && !run.tab) { | |
| 338 run = allRuns[--i]; | |
| 339 } else if (start <= 0 && i is lineStart) { | |
| 340 i = firstIndice; | |
| 341 run = allRuns[i]; | |
| 342 start = Math.max(1, firstStart); | |
| 343 } | |
| 344 breakRun(run); | |
| 345 while (start < run.length) { | |
| 30 | 346 logAttr = run.psla + start; |
| 347 //OS.MoveMemory(logAttr, run.psla + (start * SCRIPT_LOGATTR.sizeof), SCRIPT_LOGATTR.sizeof); | |
| 29 | 348 if (!logAttr.fWhiteSpace) break; |
| 349 start++; | |
| 350 } | |
| 351 if (0 < start && start < run.length) { | |
| 352 StyleItem newRun = new StyleItem(); | |
| 353 newRun.start = run.start + start; | |
| 354 newRun.length = run.length - start; | |
| 355 newRun.style = run.style; | |
| 356 newRun.analysis = run.analysis; | |
| 357 run.free(); | |
| 358 run.length = start; | |
| 359 OS.SelectObject(srcHdc, getItemFont(run)); | |
| 360 shape (srcHdc, run); | |
| 361 OS.SelectObject(srcHdc, getItemFont(newRun)); | |
| 362 shape (srcHdc, newRun); | |
| 363 StyleItem[] newAllRuns = new StyleItem[allRuns.length + 1]; | |
| 364 System.arraycopy(allRuns, 0, newAllRuns, 0, i + 1); | |
| 365 System.arraycopy(allRuns, i + 1, newAllRuns, i + 2, allRuns.length - i - 1); | |
| 366 allRuns = newAllRuns; | |
| 367 allRuns[i + 1] = newRun; | |
| 368 } | |
| 369 if (i !is allRuns.length - 2) { | |
| 370 run.softBreak = run.lineBreak = true; | |
| 371 } | |
| 372 } | |
| 373 lineWidth += run.width; | |
| 374 if (run.lineBreak) { | |
| 375 lineStart = i + 1; | |
| 376 lineWidth = run.softBreak ? 0 : indent; | |
| 377 lineCount++; | |
| 378 } | |
| 379 } | |
| 380 lineWidth = 0; | |
| 30 | 381 runs = new StyleItem[][](lineCount); |
| 29 | 382 lineOffset = new int[lineCount + 1]; |
| 383 lineY = new int[lineCount + 1]; | |
| 384 this.lineWidth = new int[lineCount]; | |
| 385 int lineRunCount = 0, line = 0; | |
| 386 int ascent = Math.max(0, this.ascent); | |
| 387 int descent = Math.max(0, this.descent); | |
| 388 StyleItem[] lineRuns = new StyleItem[allRuns.length]; | |
| 389 for (int i=0; i<allRuns.length; i++) { | |
| 390 StyleItem run = allRuns[i]; | |
| 391 lineRuns[lineRunCount++] = run; | |
| 392 lineWidth += run.width; | |
| 393 ascent = Math.max(ascent, run.ascent); | |
| 394 descent = Math.max(descent, run.descent); | |
| 395 if (run.lineBreak || i is allRuns.length - 1) { | |
| 396 /* Update the run metrics if the last run is a hard break. */ | |
| 397 if (lineRunCount is 1 && i is allRuns.length - 1) { | |
| 398 TEXTMETRIC lptm; | |
| 399 OS.SelectObject(srcHdc, getItemFont(run)); | |
| 400 OS.GetTextMetrics(srcHdc, &lptm); | |
| 401 run.ascent = lptm.tmAscent; | |
| 402 run.descent = lptm.tmDescent; | |
| 403 ascent = Math.max(ascent, run.ascent); | |
| 404 descent = Math.max(descent, run.descent); | |
| 405 } | |
| 406 runs[line] = new StyleItem[lineRunCount]; | |
| 407 System.arraycopy(lineRuns, 0, runs[line], 0, lineRunCount); | |
| 408 | |
| 409 if (justify && wrapWidth !is -1 && run.softBreak && lineWidth > 0) { | |
| 410 if (line is 0) { | |
| 411 lineWidth += indent; | |
| 412 } else { | |
| 413 StyleItem[] previousLine = runs[line - 1]; | |
| 414 StyleItem previousRun = previousLine[previousLine.length - 1]; | |
| 415 if (previousRun.lineBreak && !previousRun.softBreak) { | |
| 416 lineWidth += indent; | |
| 417 } | |
| 418 } | |
| 30 | 419 auto hHeap = OS.GetProcessHeap(); |
| 29 | 420 int newLineWidth = 0; |
| 421 for (int j = 0; j < runs[line].length; j++) { | |
| 422 StyleItem item = runs[line][j]; | |
| 423 int iDx = item.width * wrapWidth / lineWidth; | |
| 424 if (iDx !is item.width) { | |
| 30 | 425 item.justify = cast(int*)OS.HeapAlloc(hHeap, OS.HEAP_ZERO_MEMORY, item.glyphCount * 4); |
| 426 if (item.justify is null) DWT.error(DWT.ERROR_NO_HANDLES); | |
| 29 | 427 OS.ScriptJustify(item.visAttrs, item.advances, item.glyphCount, iDx - item.width, 2, item.justify); |
| 428 item.width = iDx; | |
| 429 } | |
| 430 newLineWidth += item.width; | |
| 431 } | |
| 432 lineWidth = newLineWidth; | |
| 433 } | |
| 434 this.lineWidth[line] = lineWidth; | |
| 435 | |
| 436 StyleItem lastRun = runs[line][lineRunCount - 1]; | |
| 437 int lastOffset = lastRun.start + lastRun.length; | |
| 438 runs[line] = reorder(runs[line], i is allRuns.length - 1); | |
| 439 lastRun = runs[line][lineRunCount - 1]; | |
| 440 if (run.softBreak && run !is lastRun) { | |
| 441 run.softBreak = run.lineBreak = false; | |
| 442 lastRun.softBreak = lastRun.lineBreak = true; | |
| 443 } | |
| 444 | |
| 445 lineWidth = getLineIndent(line); | |
| 446 for (int j = 0; j < runs[line].length; j++) { | |
| 447 runs[line][j].x = lineWidth; | |
| 448 lineWidth += runs[line][j].width; | |
| 449 } | |
| 450 line++; | |
| 451 lineY[line] = lineY[line - 1] + ascent + descent + lineSpacing; | |
| 452 lineOffset[line] = lastOffset; | |
| 453 lineRunCount = lineWidth = 0; | |
| 454 ascent = Math.max(0, this.ascent); | |
| 455 descent = Math.max(0, this.descent); | |
| 456 } | |
| 457 } | |
| 30 | 458 if (srcHdc !is null) OS.DeleteDC(srcHdc); |
| 29 | 459 if (gc is null) device.internal_dispose_GC(hDC, null); |
| 460 } | |
| 461 | |
| 462 /** | |
| 463 * Disposes of the operating system resources associated with | |
| 464 * the text layout. Applications must dispose of all allocated text layouts. | |
| 465 */ | |
|
48
9a64a7781bab
Added override and alias, first chunk. Thanks torhu for doing this patch.
Frank Benoit <benoit@tionex.de>
parents:
31
diff
changeset
|
466 override public void dispose () { |
| 29 | 467 if (device is null) return; |
| 468 freeRuns(); | |
| 469 font = null; | |
| 470 text = null; | |
| 471 segmentsText = null; | |
| 472 tabs = null; | |
| 473 styles = null; | |
| 474 runs = null; | |
| 475 lineOffset = null; | |
| 476 lineY = null; | |
| 477 lineWidth = null; | |
| 30 | 478 if (mLangFontLink2 !is null) { |
| 29 | 479 /* Release() */ |
| 480 OS.VtblCall(2, mLangFontLink2); | |
| 30 | 481 mLangFontLink2 = null; |
| 29 | 482 } |
| 483 OS.OleUninitialize(); | |
| 484 if (device.tracking) device.dispose_Object(this); | |
| 485 device = null; | |
| 486 } | |
| 487 | |
| 488 /** | |
| 489 * Draws the receiver's text using the specified GC at the specified | |
| 490 * point. | |
| 491 * | |
| 492 * @param gc the GC to draw | |
| 493 * @param x the x coordinate of the top left corner of the rectangular area where the text is to be drawn | |
| 494 * @param y the y coordinate of the top left corner of the rectangular area where the text is to be drawn | |
| 495 * | |
| 496 * @exception DWTException <ul> | |
| 497 * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> | |
| 498 * </ul> | |
| 499 * @exception IllegalArgumentException <ul> | |
| 500 * <li>ERROR_NULL_ARGUMENT - if the gc is null</li> | |
| 501 * </ul> | |
| 502 */ | |
| 503 public void draw (GC gc, int x, int y) { | |
| 504 draw(gc, x, y, -1, -1, null, null); | |
| 505 } | |
| 506 | |
| 507 /** | |
| 508 * Draws the receiver's text using the specified GC at the specified | |
| 509 * point. | |
| 510 * | |
| 511 * @param gc the GC to draw | |
| 512 * @param x the x coordinate of the top left corner of the rectangular area where the text is to be drawn | |
| 513 * @param y the y coordinate of the top left corner of the rectangular area where the text is to be drawn | |
| 514 * @param selectionStart the offset where the selections starts, or -1 indicating no selection | |
| 515 * @param selectionEnd the offset where the selections ends, or -1 indicating no selection | |
| 516 * @param selectionForeground selection foreground, or NULL to use the system default color | |
| 517 * @param selectionBackground selection background, or NULL to use the system default color | |
| 518 * | |
| 519 * @exception DWTException <ul> | |
| 520 * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> | |
| 521 * </ul> | |
| 522 * @exception IllegalArgumentException <ul> | |
| 523 * <li>ERROR_NULL_ARGUMENT - if the gc is null</li> | |
| 524 * </ul> | |
| 525 */ | |
| 526 public void draw (GC gc, int x, int y, int selectionStart, int selectionEnd, Color selectionForeground, Color selectionBackground) { | |
| 527 draw(gc, x, y, selectionStart, selectionEnd, selectionForeground, selectionBackground, 0); | |
| 528 } | |
| 529 | |
| 530 /** | |
| 531 * Draws the receiver's text using the specified GC at the specified | |
| 532 * point. | |
| 533 * <p> | |
| 534 * The parameter <code>flags</code> can include one of <code>DWT.DELIMITER_SELECTION</code> | |
| 535 * or <code>DWT.FULL_SELECTION</code> to specify the selection behavior on all lines except | |
| 536 * for the last line, and can also include <code>DWT.LAST_LINE_SELECTION</code> to extend | |
| 537 * the specified selection behavior to the last line. | |
| 538 * </p> | |
| 539 * @param gc the GC to draw | |
| 540 * @param x the x coordinate of the top left corner of the rectangular area where the text is to be drawn | |
| 541 * @param y the y coordinate of the top left corner of the rectangular area where the text is to be drawn | |
| 542 * @param selectionStart the offset where the selections starts, or -1 indicating no selection | |
| 543 * @param selectionEnd the offset where the selections ends, or -1 indicating no selection | |
| 544 * @param selectionForeground selection foreground, or NULL to use the system default color | |
| 545 * @param selectionBackground selection background, or NULL to use the system default color | |
| 546 * @param flags drawing options | |
| 547 * | |
| 548 * @exception DWTException <ul> | |
| 549 * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> | |
| 550 * </ul> | |
| 551 * @exception IllegalArgumentException <ul> | |
| 552 * <li>ERROR_NULL_ARGUMENT - if the gc is null</li> | |
| 553 * </ul> | |
| 554 * | |
| 555 * @since 3.3 | |
| 556 */ | |
| 557 public void draw (GC gc, int x, int y, int selectionStart, int selectionEnd, Color selectionForeground, Color selectionBackground, int flags) { | |
| 558 checkLayout(); | |
| 559 computeRuns(gc); | |
| 560 if (gc is null) DWT.error(DWT.ERROR_NULL_ARGUMENT); | |
| 561 if (gc.isDisposed()) DWT.error(DWT.ERROR_INVALID_ARGUMENT); | |
| 562 if (selectionForeground !is null && selectionForeground.isDisposed()) DWT.error(DWT.ERROR_INVALID_ARGUMENT); | |
| 563 if (selectionBackground !is null && selectionBackground.isDisposed()) DWT.error(DWT.ERROR_INVALID_ARGUMENT); | |
| 30 | 564 int length = text.length; |
| 29 | 565 if (length is 0 && flags is 0) return; |
| 30 | 566 auto hdc = gc.handle; |
| 29 | 567 Rectangle clip = gc.getClipping(); |
| 568 GCData data = gc.data; | |
| 30 | 569 auto gdipGraphics = data.gdipGraphics; |
| 570 auto foreground = data.foreground; | |
| 571 auto alpha = data.alpha; | |
| 572 bool gdip = gdipGraphics !is null && (alpha !is 0xFF || data.foregroundPattern !is null); | |
| 573 HRGN clipRgn; | |
| 29 | 574 float[] lpXform = null; |
| 30 | 575 Gdip.Rect gdipRect; |
| 576 if (gdipGraphics !is null && !gdip) { | |
| 577 auto matrix = Gdip.Matrix_new(1, 0, 0, 1, 0, 0); | |
| 578 if (matrix is null) DWT.error(DWT.ERROR_NO_HANDLES); | |
| 29 | 579 Gdip.Graphics_GetTransform(gdipGraphics, matrix); |
| 30 | 580 auto identity_ = gc.identity(); |
| 581 Gdip.Matrix_Invert(identity_); | |
| 582 Gdip.Matrix_Multiply(matrix, identity_, Gdip.MatrixOrderAppend); | |
| 583 Gdip.Matrix_delete(identity_); | |
| 29 | 584 if (!Gdip.Matrix_IsIdentity(matrix)) { |
| 585 lpXform = new float[6]; | |
| 30 | 586 Gdip.Matrix_GetElements(matrix, lpXform.ptr); |
| 29 | 587 } |
| 588 Gdip.Matrix_delete(matrix); | |
| 589 if ((data.style & DWT.MIRRORED) !is 0 && lpXform !is null) { | |
| 590 gdip = true; | |
| 591 lpXform = null; | |
| 592 } else { | |
| 593 Gdip.Graphics_SetPixelOffsetMode(gdipGraphics, Gdip.PixelOffsetModeNone); | |
| 30 | 594 auto rgn = Gdip.Region_new(); |
| 29 | 595 Gdip.Graphics_GetClip(gdipGraphics, rgn); |
| 596 if (!Gdip.Region_IsInfinite(rgn, gdipGraphics)) { | |
| 597 clipRgn = Gdip.Region_GetHRGN(rgn, gdipGraphics); | |
| 598 } | |
| 599 Gdip.Region_delete(rgn); | |
| 600 Gdip.Graphics_SetPixelOffsetMode(gdipGraphics, Gdip.PixelOffsetModeHalf); | |
| 601 hdc = Gdip.Graphics_GetHDC(gdipGraphics); | |
| 602 } | |
| 603 } | |
| 30 | 604 Gdip.Brush* foregroundBrush; |
| 605 int state = 0; | |
| 29 | 606 if (gdip) { |
| 607 gc.checkGC(GC.FOREGROUND); | |
| 608 foregroundBrush = gc.getFgBrush(); | |
| 609 } else { | |
| 610 state = OS.SaveDC(hdc); | |
| 611 if ((data.style & DWT.MIRRORED) !is 0) { | |
| 612 OS.SetLayout(hdc, OS.GetLayout(hdc) | OS.LAYOUT_RTL); | |
| 613 } | |
| 614 if (lpXform !is null) { | |
| 615 OS.SetGraphicsMode(hdc, OS.GM_ADVANCED); | |
| 30 | 616 OS.SetWorldTransform(hdc, cast(XFORM*)lpXform.ptr); |
| 29 | 617 } |
| 30 | 618 if (clipRgn !is null) { |
| 29 | 619 OS.SelectClipRgn(hdc, clipRgn); |
| 620 OS.DeleteObject(clipRgn); | |
| 621 } | |
| 622 } | |
| 623 bool hasSelection = selectionStart <= selectionEnd && selectionStart !is -1 && selectionEnd !is -1; | |
| 624 if (hasSelection || (flags & DWT.LAST_LINE_SELECTION) !is 0) { | |
| 625 selectionStart = Math.min(Math.max(0, selectionStart), length - 1); | |
| 626 selectionEnd = Math.min(Math.max(0, selectionEnd), length - 1); | |
| 627 if (selectionForeground is null) selectionForeground = device.getSystemColor(DWT.COLOR_LIST_SELECTION_TEXT); | |
| 628 if (selectionBackground is null) selectionBackground = device.getSystemColor(DWT.COLOR_LIST_SELECTION); | |
| 629 selectionStart = translateOffset(selectionStart); | |
| 630 selectionEnd = translateOffset(selectionEnd); | |
| 631 } | |
| 30 | 632 RECT rect; |
| 633 void* selBrush; | |
| 634 void* selPen; | |
| 635 void* selBrushFg; | |
| 636 | |
| 29 | 637 if (hasSelection || (flags & DWT.LAST_LINE_SELECTION) !is 0) { |
| 638 if (gdip) { | |
| 30 | 639 auto bg = selectionBackground.handle; |
| 640 auto argb = ((alpha & 0xFF) << 24) | ((bg >> 16) & 0xFF) | (bg & 0xFF00) | ((bg & 0xFF) << 16); | |
| 641 auto color = Gdip.Color_new(argb); | |
| 29 | 642 selBrush = Gdip.SolidBrush_new(color); |
| 643 Gdip.Color_delete(color); | |
| 30 | 644 auto fg = selectionForeground.handle; |
| 29 | 645 argb = ((alpha & 0xFF) << 24) | ((fg >> 16) & 0xFF) | (fg & 0xFF00) | ((fg & 0xFF) << 16); |
| 646 color = Gdip.Color_new(argb); | |
| 647 selBrushFg = Gdip.SolidBrush_new(color); | |
| 30 | 648 selPen = Gdip.Pen_new( cast(Gdip.Brush*)selBrushFg, 1); |
| 29 | 649 Gdip.Color_delete(color); |
| 650 } else { | |
| 651 selBrush = OS.CreateSolidBrush(selectionBackground.handle); | |
| 652 selPen = OS.CreatePen(OS.PS_SOLID, 1, selectionForeground.handle); | |
| 653 } | |
| 654 } | |
| 655 int offset = (orientation & DWT.RIGHT_TO_LEFT) !is 0 ? -1 : 0; | |
| 656 OS.SetBkMode(hdc, OS.TRANSPARENT); | |
| 657 for (int line=0; line<runs.length; line++) { | |
| 658 int drawX = x + getLineIndent(line); | |
| 659 int drawY = y + lineY[line]; | |
| 660 StyleItem[] lineRuns = runs[line]; | |
| 661 int lineHeight = lineY[line+1] - lineY[line]; | |
| 662 if (flags !is 0 && (hasSelection || (flags & DWT.LAST_LINE_SELECTION) !is 0)) { | |
| 663 bool extents = false; | |
| 664 if (line is runs.length - 1 && (flags & DWT.LAST_LINE_SELECTION) !is 0) { | |
| 665 extents = true; | |
| 666 } else { | |
| 667 StyleItem run = lineRuns[lineRuns.length - 1]; | |
| 668 if (run.lineBreak && !run.softBreak) { | |
| 669 if (selectionStart <= run.start && run.start <= selectionEnd) extents = true; | |
| 670 } else { | |
| 671 int endOffset = run.start + run.length - 1; | |
| 672 if (selectionStart <= endOffset && endOffset < selectionEnd && (flags & DWT.FULL_SELECTION) !is 0) { | |
| 673 extents = true; | |
| 674 } | |
| 675 } | |
| 676 } | |
| 677 if (extents) { | |
| 678 int width; | |
| 679 if ((flags & DWT.FULL_SELECTION) !is 0) { | |
| 680 width = OS.IsWin95 ? 0x7FFF : 0x6FFFFFF; | |
| 681 } else { | |
| 682 width = (lineHeight - lineSpacing) / 3; | |
| 683 } | |
| 684 if (gdip) { | |
| 30 | 685 Gdip.Graphics_FillRectangle(gdipGraphics, cast(Gdip.Brush*)selBrush, drawX + lineWidth[line], drawY, width, lineHeight - lineSpacing); |
| 29 | 686 } else { |
| 687 OS.SelectObject(hdc, selBrush); | |
| 688 OS.PatBlt(hdc, drawX + lineWidth[line], drawY, width, lineHeight - lineSpacing, OS.PATCOPY); | |
| 689 } | |
| 690 } | |
| 691 } | |
| 692 if (drawX > clip.x + clip.width) continue; | |
| 693 if (drawX + lineWidth[line] < clip.x) continue; | |
| 694 int baseline = Math.max(0, this.ascent); | |
| 695 for (int i = 0; i < lineRuns.length; i++) { | |
| 696 baseline = Math.max(baseline, lineRuns[i].ascent); | |
| 697 } | |
| 698 int alignmentX = drawX; | |
| 699 for (int i = 0; i < lineRuns.length; i++) { | |
| 700 StyleItem run = lineRuns[i]; | |
| 701 if (run.length is 0) continue; | |
| 702 if (drawX > clip.x + clip.width) break; | |
| 703 if (drawX + run.width >= clip.x) { | |
| 704 if (!run.lineBreak || run.softBreak) { | |
| 705 int end = run.start + run.length - 1; | |
| 706 bool fullSelection = hasSelection && selectionStart <= run.start && selectionEnd >= end; | |
| 707 if (fullSelection) { | |
| 708 if (gdip) { | |
| 30 | 709 Gdip.Graphics_FillRectangle(gdipGraphics, cast(Gdip.Brush*)selBrush, drawX, drawY, run.width, lineHeight - lineSpacing); |
| 29 | 710 } else { |
| 711 OS.SelectObject(hdc, selBrush); | |
| 712 OS.PatBlt(hdc, drawX, drawY, run.width, lineHeight - lineSpacing, OS.PATCOPY); | |
| 713 } | |
| 714 } else { | |
| 715 if (run.style !is null && run.style.background !is null) { | |
| 30 | 716 auto bg = run.style.background.handle; |
| 29 | 717 int drawRunY = drawY + (baseline - run.ascent); |
| 718 if (gdip) { | |
| 719 int argb = ((alpha & 0xFF) << 24) | ((bg >> 16) & 0xFF) | (bg & 0xFF00) | ((bg & 0xFF) << 16); | |
| 30 | 720 auto color = Gdip.Color_new(argb); |
| 721 auto brush = Gdip.SolidBrush_new(color); | |
| 722 Gdip.Graphics_FillRectangle(gdipGraphics, cast(Gdip.Brush*)brush, drawX, drawRunY, run.width, run.ascent + run.descent); | |
| 29 | 723 Gdip.Color_delete(color); |
| 724 Gdip.SolidBrush_delete(brush); | |
| 725 } else { | |
| 30 | 726 auto hBrush = OS.CreateSolidBrush (bg); |
| 727 auto oldBrush = OS.SelectObject(hdc, hBrush); | |
| 29 | 728 OS.PatBlt(hdc, drawX, drawRunY, run.width, run.ascent + run.descent, OS.PATCOPY); |
| 729 OS.SelectObject(hdc, oldBrush); | |
| 730 OS.DeleteObject(hBrush); | |
| 731 } | |
| 732 } | |
| 733 bool partialSelection = hasSelection && !(selectionStart > end || run.start > selectionEnd); | |
| 734 if (partialSelection) { | |
| 735 int selStart = Math.max(selectionStart, run.start) - run.start; | |
| 736 int selEnd = Math.min(selectionEnd, end) - run.start; | |
| 737 int cChars = run.length; | |
| 738 int gGlyphs = run.glyphCount; | |
| 30 | 739 int piX; |
| 740 int* advances = run.justify !is null ? run.justify : run.advances; | |
| 741 OS.ScriptCPtoX(selStart, false, cChars, gGlyphs, run.clusters, run.visAttrs, advances, &run.analysis, &piX); | |
| 742 int runX = (orientation & DWT.RIGHT_TO_LEFT) !is 0 ? run.width - piX : piX; | |
| 29 | 743 rect.left = drawX + runX; |
| 744 rect.top = drawY; | |
| 30 | 745 OS.ScriptCPtoX(selEnd, true, cChars, gGlyphs, run.clusters, run.visAttrs, advances, &run.analysis, &piX); |
| 746 runX = (orientation & DWT.RIGHT_TO_LEFT) !is 0 ? run.width - piX : piX; | |
| 29 | 747 rect.right = drawX + runX; |
| 748 rect.bottom = drawY + lineHeight - lineSpacing; | |
| 749 if (gdip) { | |
| 30 | 750 Gdip.Graphics_FillRectangle(gdipGraphics, cast(Gdip.Brush*)selBrush, rect.left, rect.top, rect.right - rect.left, rect.bottom - rect.top); |
| 29 | 751 } else { |
| 752 OS.SelectObject(hdc, selBrush); | |
| 753 OS.PatBlt(hdc, rect.left, rect.top, rect.right - rect.left, rect.bottom - rect.top, OS.PATCOPY); | |
| 754 } | |
| 755 } | |
| 756 } | |
| 757 } | |
| 758 } | |
| 759 drawX += run.width; | |
| 760 } | |
| 761 drawX = alignmentX; | |
| 762 for (int i = 0; i < lineRuns.length; i++) { | |
| 763 StyleItem run = lineRuns[i]; | |
| 764 if (run.length is 0) continue; | |
| 765 if (drawX > clip.x + clip.width) break; | |
| 766 if (drawX + run.width >= clip.x) { | |
| 767 if (!run.tab && (!run.lineBreak || run.softBreak) && !(run.style !is null && run.style.metrics !is null)) { | |
| 768 int end = run.start + run.length - 1; | |
| 769 bool fullSelection = hasSelection && selectionStart <= run.start && selectionEnd >= end; | |
| 770 bool partialSelection = hasSelection && !fullSelection && !(selectionStart > end || run.start > selectionEnd); | |
| 771 checkItem(hdc, run); | |
| 772 OS.SelectObject(hdc, getItemFont(run)); | |
| 773 int drawRunY = drawY + (baseline - run.ascent); | |
| 774 if (partialSelection) { | |
| 775 int selStart = Math.max(selectionStart, run.start) - run.start; | |
| 776 int selEnd = Math.min(selectionEnd, end) - run.start; | |
| 777 int cChars = run.length; | |
| 778 int gGlyphs = run.glyphCount; | |
| 30 | 779 int piX; |
| 780 int* advances = run.justify !is null ? run.justify : run.advances; | |
| 781 OS.ScriptCPtoX(selStart, false, cChars, gGlyphs, run.clusters, run.visAttrs, advances, &run.analysis, &piX); | |
| 782 int runX = (orientation & DWT.RIGHT_TO_LEFT) !is 0 ? run.width - piX : piX; | |
| 29 | 783 rect.left = drawX + runX; |
| 784 rect.top = drawY; | |
| 30 | 785 OS.ScriptCPtoX(selEnd, true, cChars, gGlyphs, run.clusters, run.visAttrs, advances, &run.analysis, &piX); |
| 786 runX = (orientation & DWT.RIGHT_TO_LEFT) !is 0 ? run.width - piX : piX; | |
| 29 | 787 rect.right = drawX + runX; |
| 788 rect.bottom = drawY + lineHeight; | |
| 789 } | |
| 790 if (gdip) { | |
| 791 OS.BeginPath(hdc); | |
| 30 | 792 OS.ScriptTextOut(hdc, run.psc, drawX, drawRunY, 0, null, &run.analysis , null, 0, run.glyphs, run.glyphCount, run.advances, run.justify, run.goffsets); |
| 29 | 793 OS.EndPath(hdc); |
| 794 int count = OS.GetPath(hdc, null, null, 0); | |
| 795 int[] points = new int[count*2]; | |
| 30 | 796 ubyte[] types = new ubyte[count]; |
| 797 OS.GetPath(hdc, cast(POINT*)points.ptr, types.ptr, count); | |
| 29 | 798 for (int typeIndex = 0; typeIndex < types.length; typeIndex++) { |
| 799 int newType = 0; | |
| 800 int type = types[typeIndex] & 0xFF; | |
| 801 switch (type & ~OS.PT_CLOSEFIGURE) { | |
| 802 case OS.PT_MOVETO: newType = Gdip.PathPointTypeStart; break; | |
| 803 case OS.PT_LINETO: newType = Gdip.PathPointTypeLine; break; | |
| 804 case OS.PT_BEZIERTO: newType = Gdip.PathPointTypeBezier; break; | |
| 805 } | |
| 806 if ((type & OS.PT_CLOSEFIGURE) !is 0) newType |= Gdip.PathPointTypeCloseSubpath; | |
| 807 types[typeIndex] = cast(byte)newType; | |
| 808 } | |
| 30 | 809 auto path = Gdip.GraphicsPath_new(cast(Gdip.Point*)points.ptr, cast(byte*)types.ptr, count, Gdip.FillModeAlternate); |
| 810 if (path is null) DWT.error(DWT.ERROR_NO_HANDLES); | |
| 811 auto brush = foregroundBrush; | |
| 29 | 812 if (fullSelection) { |
| 30 | 813 brush = cast(Gdip.Brush*)selBrushFg; |
| 29 | 814 } else { |
| 815 if (run.style !is null && run.style.foreground !is null) { | |
| 30 | 816 auto fg = run.style.foreground.handle; |
| 29 | 817 int argb = ((alpha & 0xFF) << 24) | ((fg >> 16) & 0xFF) | (fg & 0xFF00) | ((fg & 0xFF) << 16); |
| 30 | 818 auto color = Gdip.Color_new(argb); |
| 819 brush = cast(Gdip.Brush*)Gdip.SolidBrush_new(color); | |
| 29 | 820 Gdip.Color_delete(color); |
| 821 } | |
| 822 } | |
| 823 int gstate = 0; | |
| 824 if (partialSelection) { | |
| 825 gdipRect.X = rect.left; | |
| 826 gdipRect.Y = rect.top; | |
| 827 gdipRect.Width = rect.right - rect.left; | |
| 828 gdipRect.Height = rect.bottom - rect.top; | |
| 829 gstate = Gdip.Graphics_Save(gdipGraphics); | |
| 30 | 830 Gdip.Graphics_SetClip(gdipGraphics, &gdipRect, Gdip.CombineModeExclude); |
| 29 | 831 } |
| 832 int antialias = Gdip.Graphics_GetSmoothingMode(gdipGraphics), textAntialias = 0; | |
| 833 int mode = Gdip.Graphics_GetTextRenderingHint(data.gdipGraphics); | |
| 834 switch (mode) { | |
| 835 case Gdip.TextRenderingHintSystemDefault: textAntialias = Gdip.SmoothingModeAntiAlias; break; | |
| 836 case Gdip.TextRenderingHintSingleBitPerPixel: | |
| 837 case Gdip.TextRenderingHintSingleBitPerPixelGridFit: textAntialias = Gdip.SmoothingModeNone; break; | |
| 838 case Gdip.TextRenderingHintAntiAlias: | |
| 839 case Gdip.TextRenderingHintAntiAliasGridFit: | |
| 840 case Gdip.TextRenderingHintClearTypeGridFit: textAntialias = Gdip.SmoothingModeAntiAlias; break; | |
| 841 } | |
| 842 Gdip.Graphics_SetSmoothingMode(gdipGraphics, textAntialias); | |
| 843 int gstate2 = 0; | |
| 844 if ((data.style & DWT.MIRRORED) !is 0) { | |
| 845 gstate2 = Gdip.Graphics_Save(gdipGraphics); | |
| 846 Gdip.Graphics_ScaleTransform(gdipGraphics, -1, 1, Gdip.MatrixOrderPrepend); | |
| 847 Gdip.Graphics_TranslateTransform(gdipGraphics, -2 * drawX - run.width, 0, Gdip.MatrixOrderPrepend); | |
| 848 } | |
| 849 Gdip.Graphics_FillPath(gdipGraphics, brush, path); | |
| 850 if ((data.style & DWT.MIRRORED) !is 0) { | |
| 851 Gdip.Graphics_Restore(gdipGraphics, gstate2); | |
| 852 } | |
| 853 Gdip.Graphics_SetSmoothingMode(gdipGraphics, antialias); | |
| 854 if (run.style !is null && (run.style.underline || run.style.strikeout)) { | |
| 30 | 855 auto newPen = hasSelection ? cast(Gdip.Pen*)selPen : Gdip.Pen_new(brush, 1); |
| 29 | 856 Gdip.Graphics_SetPixelOffsetMode(gdipGraphics, Gdip.PixelOffsetModeNone); |
| 857 if (run.style.underline) { | |
| 858 int underlineY = drawY + baseline + 1 - run.style.rise; | |
| 859 Gdip.Graphics_DrawLine(gdipGraphics, newPen, drawX, underlineY, drawX + run.width, underlineY); | |
| 860 } | |
| 861 if (run.style.strikeout) { | |
| 862 int strikeoutY = drawRunY + run.leading + (run.ascent - run.style.rise) / 2; | |
| 863 Gdip.Graphics_DrawLine(gdipGraphics, newPen, drawX, strikeoutY, drawX + run.width, strikeoutY); | |
| 864 } | |
| 865 if (newPen !is selPen) Gdip.Pen_delete(newPen); | |
| 866 Gdip.Graphics_SetPixelOffsetMode(gdipGraphics, Gdip.PixelOffsetModeHalf); | |
| 867 } | |
| 868 if (partialSelection) { | |
| 869 Gdip.Graphics_Restore(gdipGraphics, gstate); | |
| 870 gstate = Gdip.Graphics_Save(gdipGraphics); | |
| 30 | 871 Gdip.Graphics_SetClip(gdipGraphics, &gdipRect, Gdip.CombineModeIntersect); |
| 29 | 872 Gdip.Graphics_SetSmoothingMode(gdipGraphics, textAntialias); |
| 30 | 873 Gdip.Graphics_FillPath(gdipGraphics, cast(Gdip.Brush*)selBrushFg, path); |
| 29 | 874 Gdip.Graphics_SetSmoothingMode(gdipGraphics, antialias); |
| 875 if (run.style !is null && (run.style.underline || run.style.strikeout)) { | |
| 876 Gdip.Graphics_SetPixelOffsetMode(gdipGraphics, Gdip.PixelOffsetModeNone); | |
| 877 if (run.style.underline) { | |
| 878 int underlineY = drawY + baseline + 1 - run.style.rise; | |
| 30 | 879 Gdip.Graphics_DrawLine(gdipGraphics, cast(Gdip.Pen*)selPen, rect.left, underlineY, rect.right, underlineY); |
| 29 | 880 } |
| 881 if (run.style.strikeout) { | |
| 882 int strikeoutY = drawRunY + run.leading + (run.ascent - run.style.rise) / 2; | |
| 30 | 883 Gdip.Graphics_DrawLine(gdipGraphics, cast(Gdip.Pen*)selPen, rect.left, strikeoutY, rect.right, strikeoutY); |
| 29 | 884 } |
| 885 Gdip.Graphics_SetPixelOffsetMode(gdipGraphics, Gdip.PixelOffsetModeHalf); | |
| 886 } | |
| 887 Gdip.Graphics_Restore(gdipGraphics, gstate); | |
| 888 } | |
| 889 Gdip.GraphicsPath_delete(path); | |
| 30 | 890 if (brush !is selBrushFg && brush !is foregroundBrush) Gdip.SolidBrush_delete(cast(Gdip.SolidBrush*)brush); |
| 29 | 891 } else { |
| 892 int fg = foreground; | |
| 893 if (fullSelection) { | |
| 894 fg = selectionForeground.handle; | |
| 895 } else { | |
| 896 if (run.style !is null && run.style.foreground !is null) fg = run.style.foreground.handle; | |
| 897 } | |
| 898 OS.SetTextColor(hdc, fg); | |
| 30 | 899 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 | 900 if (run.style !is null && (run.style.underline || run.style.strikeout)) { |
| 30 | 901 auto newPen = hasSelection && fg is selectionForeground.handle ? cast(HPEN)selPen : OS.CreatePen(OS.PS_SOLID, 1, fg); |
| 902 auto oldPen = OS.SelectObject(hdc, newPen); | |
| 29 | 903 if (run.style.underline) { |
| 904 int underlineY = drawY + baseline + 1 - run.style.rise; | |
| 30 | 905 OS.MoveToEx(hdc, drawX, underlineY, null); |
| 29 | 906 OS.LineTo(hdc, drawX + run.width, underlineY); |
| 907 } | |
| 908 if (run.style.strikeout) { | |
| 909 int strikeoutY = drawRunY + run.leading + (run.ascent - run.style.rise) / 2; | |
| 30 | 910 OS.MoveToEx(hdc, drawX, strikeoutY, null); |
| 29 | 911 OS.LineTo(hdc, drawX + run.width, strikeoutY); |
| 912 } | |
| 913 OS.SelectObject(hdc, oldPen); | |
| 914 if (!hasSelection || fg !is selectionForeground.handle) OS.DeleteObject(newPen); | |
| 915 } | |
| 916 if (partialSelection && fg !is selectionForeground.handle) { | |
| 917 OS.SetTextColor(hdc, selectionForeground.handle); | |
| 30 | 918 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 | 919 if (run.style !is null && (run.style.underline || run.style.strikeout)) { |
| 30 | 920 auto oldPen = OS.SelectObject(hdc, selPen); |
| 29 | 921 if (run.style.underline) { |
| 922 int underlineY = drawY + baseline + 1 - run.style.rise; | |
| 30 | 923 OS.MoveToEx(hdc, rect.left, underlineY, null); |
| 29 | 924 OS.LineTo(hdc, rect.right, underlineY); |
| 925 } | |
| 926 if (run.style.strikeout) { | |
| 927 int strikeoutY = drawRunY + run.leading + (run.ascent - run.style.rise) / 2; | |
| 30 | 928 OS.MoveToEx(hdc, rect.left, strikeoutY, null); |
| 29 | 929 OS.LineTo(hdc, rect.right, strikeoutY); |
| 930 } | |
| 931 OS.SelectObject(hdc, oldPen); | |
| 932 } | |
| 933 } | |
| 934 } | |
| 935 } | |
| 936 } | |
| 937 drawX += run.width; | |
| 938 } | |
| 939 } | |
| 940 if (gdip) { | |
| 30 | 941 if (selBrush !is null) Gdip.SolidBrush_delete(cast(Gdip.SolidBrush*)selBrush); |
| 942 if (selBrushFg !is null) Gdip.SolidBrush_delete(cast(Gdip.SolidBrush*)selBrushFg); | |
| 943 if (selPen !is null) Gdip.Pen_delete(cast(Gdip.Pen*)selPen); | |
| 29 | 944 } else { |
| 945 OS.RestoreDC(hdc, state); | |
| 30 | 946 if (gdipGraphics !is null) Gdip.Graphics_ReleaseHDC(gdipGraphics, hdc); |
| 947 if (selBrush !is null) OS.DeleteObject (selBrush); | |
| 948 if (selPen !is null) OS.DeleteObject (selPen); | |
| 29 | 949 } |
| 950 } | |
| 951 | |
| 952 void freeRuns () { | |
| 953 if (allRuns is null) return; | |
| 954 for (int i=0; i<allRuns.length; i++) { | |
| 955 StyleItem run = allRuns[i]; | |
| 956 run.free(); | |
| 957 } | |
| 958 allRuns = null; | |
| 959 runs = null; | |
| 960 segmentsText = null; | |
| 961 } | |
| 962 | |
| 963 /** | |
| 964 * Returns the receiver's horizontal text alignment, which will be one | |
| 965 * of <code>DWT.LEFT</code>, <code>DWT.CENTER</code> or | |
| 966 * <code>DWT.RIGHT</code>. | |
| 967 * | |
| 968 * @return the alignment used to positioned text horizontally | |
| 969 * | |
| 970 * @exception DWTException <ul> | |
| 971 * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> | |
| 972 * </ul> | |
| 973 */ | |
| 974 public int getAlignment () { | |
| 975 checkLayout(); | |
| 976 return alignment; | |
| 977 } | |
| 978 | |
| 979 /** | |
| 980 * Returns the ascent of the receiver. | |
| 981 * | |
| 982 * @return the ascent | |
| 983 * | |
| 984 * @exception DWTException <ul> | |
| 985 * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> | |
| 986 * </ul> | |
| 987 * | |
| 988 * @see #getDescent() | |
| 989 * @see #setDescent(int) | |
| 990 * @see #setAscent(int) | |
| 991 * @see #getLineMetrics(int) | |
| 992 */ | |
| 993 public int getAscent () { | |
| 994 checkLayout(); | |
| 995 return ascent; | |
| 996 } | |
| 997 | |
| 998 /** | |
| 999 * Returns the bounds of the receiver. | |
| 1000 * | |
| 1001 * @return the bounds of the receiver | |
| 1002 * | |
| 1003 * @exception DWTException <ul> | |
| 1004 * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> | |
| 1005 * </ul> | |
| 1006 */ | |
| 1007 public Rectangle getBounds () { | |
| 1008 checkLayout(); | |
| 1009 computeRuns(null); | |
| 1010 int width = 0; | |
| 1011 if (wrapWidth !is -1) { | |
| 1012 width = wrapWidth; | |
| 1013 } else { | |
| 1014 for (int line=0; line<runs.length; line++) { | |
| 1015 width = Math.max(width, lineWidth[line] + getLineIndent(line)); | |
| 1016 } | |
| 1017 } | |
| 1018 return new Rectangle (0, 0, width, lineY[lineY.length - 1]); | |
| 1019 } | |
| 1020 | |
| 1021 /** | |
| 1022 * Returns the bounds for the specified range of characters. The | |
| 1023 * bounds is the smallest rectangle that encompasses all characters | |
| 1024 * in the range. The start and end offsets are inclusive and will be | |
| 1025 * clamped if out of range. | |
| 1026 * | |
| 1027 * @param start the start offset | |
| 1028 * @param end the end offset | |
| 1029 * @return the bounds of the character range | |
| 1030 * | |
| 1031 * @exception DWTException <ul> | |
| 1032 * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> | |
| 1033 * </ul> | |
| 1034 */ | |
| 1035 public Rectangle getBounds (int start, int end) { | |
| 1036 checkLayout(); | |
| 1037 computeRuns(null); | |
| 30 | 1038 int length = text.length; |
| 29 | 1039 if (length is 0) return new Rectangle(0, 0, 0, 0); |
| 1040 if (start > end) return new Rectangle(0, 0, 0, 0); | |
| 1041 start = Math.min(Math.max(0, start), length - 1); | |
| 1042 end = Math.min(Math.max(0, end), length - 1); | |
| 1043 start = translateOffset(start); | |
| 1044 end = translateOffset(end); | |
| 1045 int left = 0x7fffffff, right = 0; | |
| 1046 int top = 0x7fffffff, bottom = 0; | |
| 1047 bool isRTL = (orientation & DWT.RIGHT_TO_LEFT) !is 0; | |
| 1048 for (int i = 0; i < allRuns.length - 1; i++) { | |
| 1049 StyleItem run = allRuns[i]; | |
| 1050 int runEnd = run.start + run.length; | |
| 1051 if (runEnd <= start) continue; | |
| 1052 if (run.start > end) break; | |
| 1053 int runLead = run.x; | |
| 1054 int runTrail = run.x + run.width; | |
| 1055 if (run.start <= start && start < runEnd) { | |
| 1056 int cx = 0; | |
| 1057 if (run.style !is null && run.style.metrics !is null) { | |
| 1058 GlyphMetrics metrics = run.style.metrics; | |
| 1059 cx = metrics.width * (start - run.start); | |
| 1060 } else if (!run.tab) { | |
| 30 | 1061 int piX; |
| 1062 int* advances = run.justify !is null ? run.justify : run.advances; | |
| 1063 OS.ScriptCPtoX(start - run.start, false, run.length, run.glyphCount, run.clusters, run.visAttrs, advances, &run.analysis, &piX); | |
| 1064 cx = isRTL ? run.width - piX : piX; | |
| 29 | 1065 } |
| 1066 if (run.analysis.fRTL ^ isRTL) { | |
| 1067 runTrail = run.x + cx; | |
| 1068 } else { | |
| 1069 runLead = run.x + cx; | |
| 1070 } | |
| 1071 } | |
| 1072 if (run.start <= end && end < runEnd) { | |
| 1073 int cx = run.width; | |
| 1074 if (run.style !is null && run.style.metrics !is null) { | |
| 1075 GlyphMetrics metrics = run.style.metrics; | |
| 1076 cx = metrics.width * (end - run.start + 1); | |
| 1077 } else if (!run.tab) { | |
| 30 | 1078 int piX; |
| 1079 int* advances = run.justify !is null ? run.justify : run.advances; | |
| 1080 OS.ScriptCPtoX(end - run.start, true, run.length, run.glyphCount, run.clusters, run.visAttrs, advances, &run.analysis, &piX); | |
| 1081 cx = isRTL ? run.width - piX : piX; | |
| 29 | 1082 } |
| 1083 if (run.analysis.fRTL ^ isRTL) { | |
| 1084 runLead = run.x + cx; | |
| 1085 } else { | |
| 1086 runTrail = run.x + cx; | |
| 1087 } | |
| 1088 } | |
| 1089 int lineIndex = 0; | |
| 1090 while (lineIndex < runs.length && lineOffset[lineIndex + 1] <= run.start) { | |
| 1091 lineIndex++; | |
| 1092 } | |
| 1093 left = Math.min(left, runLead); | |
| 1094 right = Math.max(right, runTrail); | |
| 1095 top = Math.min(top, lineY[lineIndex]); | |
| 1096 bottom = Math.max(bottom, lineY[lineIndex + 1] - lineSpacing); | |
| 1097 } | |
| 1098 return new Rectangle(left, top, right - left, bottom - top); | |
| 1099 } | |
| 1100 | |
| 1101 /** | |
| 1102 * Returns the descent of the receiver. | |
| 1103 * | |
| 1104 * @return the descent | |
| 1105 * | |
| 1106 * @exception DWTException <ul> | |
| 1107 * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> | |
| 1108 * </ul> | |
| 1109 * | |
| 1110 * @see #getAscent() | |
| 1111 * @see #setAscent(int) | |
| 1112 * @see #setDescent(int) | |
| 1113 * @see #getLineMetrics(int) | |
| 1114 */ | |
| 1115 public int getDescent () { | |
| 1116 checkLayout(); | |
| 1117 return descent; | |
| 1118 } | |
| 1119 | |
| 1120 /** | |
| 1121 * Returns the default font currently being used by the receiver | |
| 1122 * to draw and measure text. | |
| 1123 * | |
| 1124 * @return the receiver's font | |
| 1125 * | |
| 1126 * @exception DWTException <ul> | |
| 1127 * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> | |
| 1128 * </ul> | |
| 1129 */ | |
| 1130 public Font getFont () { | |
| 1131 checkLayout(); | |
| 1132 return font; | |
| 1133 } | |
| 1134 | |
| 1135 /** | |
| 1136 * Returns the receiver's indent. | |
| 1137 * | |
| 1138 * @return the receiver's indent | |
| 1139 * | |
| 1140 * @exception DWTException <ul> | |
| 1141 * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> | |
| 1142 * </ul> | |
| 1143 * | |
| 1144 * @since 3.2 | |
| 1145 */ | |
| 1146 public int getIndent () { | |
| 1147 checkLayout(); | |
| 1148 return indent; | |
| 1149 } | |
| 1150 | |
| 1151 /** | |
| 1152 * Returns the receiver's justification. | |
| 1153 * | |
| 1154 * @return the receiver's justification | |
| 1155 * | |
| 1156 * @exception DWTException <ul> | |
| 1157 * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> | |
| 1158 * </ul> | |
| 1159 * | |
| 1160 * @since 3.2 | |
| 1161 */ | |
| 1162 public bool getJustify () { | |
| 1163 checkLayout(); | |
| 1164 return justify; | |
| 1165 } | |
| 1166 | |
| 30 | 1167 HFONT getItemFont (StyleItem item) { |
| 1168 if (item.fallbackFont !is null) return cast(HFONT) item.fallbackFont; | |
| 29 | 1169 if (item.style !is null && item.style.font !is null) { |
| 1170 return item.style.font.handle; | |
| 1171 } | |
| 1172 if (this.font !is null) { | |
| 1173 return this.font.handle; | |
| 1174 } | |
| 1175 return device.systemFont; | |
| 1176 } | |
| 1177 | |
| 1178 /** | |
| 1179 * Returns the embedding level for the specified character offset. The | |
| 1180 * embedding level is usually used to determine the directionality of a | |
| 1181 * character in bidirectional text. | |
| 1182 * | |
| 1183 * @param offset the character offset | |
| 1184 * @return the embedding level | |
| 1185 * | |
| 1186 * @exception IllegalArgumentException <ul> | |
| 1187 * <li>ERROR_INVALID_ARGUMENT - if the character offset is out of range</li> | |
| 1188 * </ul> | |
| 1189 * @exception DWTException <ul> | |
| 1190 * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> | |
| 1191 */ | |
| 1192 public int getLevel (int offset) { | |
| 1193 checkLayout(); | |
| 1194 computeRuns(null); | |
| 30 | 1195 int length = text.length; |
| 29 | 1196 if (!(0 <= offset && offset <= length)) DWT.error(DWT.ERROR_INVALID_RANGE); |
| 1197 offset = translateOffset(offset); | |
| 1198 for (int i=1; i<allRuns.length; i++) { | |
| 1199 if (allRuns[i].start > offset) { | |
| 1200 return allRuns[i - 1].analysis.s.uBidiLevel; | |
| 1201 } | |
| 1202 } | |
| 1203 return (orientation & DWT.RIGHT_TO_LEFT) !is 0 ? 1 : 0; | |
| 1204 } | |
| 1205 | |
| 1206 /** | |
| 1207 * Returns the bounds of the line for the specified line index. | |
| 1208 * | |
| 1209 * @param lineIndex the line index | |
| 1210 * @return the line bounds | |
| 1211 * | |
| 1212 * @exception IllegalArgumentException <ul> | |
| 1213 * <li>ERROR_INVALID_ARGUMENT - if the line index is out of range</li> | |
| 1214 * </ul> | |
| 1215 * @exception DWTException <ul> | |
| 1216 * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> | |
| 1217 * </ul> | |
| 1218 */ | |
| 1219 public Rectangle getLineBounds(int lineIndex) { | |
| 1220 checkLayout(); | |
| 1221 computeRuns(null); | |
| 1222 if (!(0 <= lineIndex && lineIndex < runs.length)) DWT.error(DWT.ERROR_INVALID_RANGE); | |
| 1223 int x = getLineIndent(lineIndex); | |
| 1224 int y = lineY[lineIndex]; | |
| 1225 int width = lineWidth[lineIndex]; | |
| 1226 int height = lineY[lineIndex + 1] - y - lineSpacing; | |
| 1227 return new Rectangle (x, y, width, height); | |
| 1228 } | |
| 1229 | |
| 1230 /** | |
| 1231 * Returns the receiver's line count. This includes lines caused | |
| 1232 * by wrapping. | |
| 1233 * | |
| 1234 * @return the line count | |
| 1235 * | |
| 1236 * @exception DWTException <ul> | |
| 1237 * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> | |
| 1238 * </ul> | |
| 1239 */ | |
| 1240 public int getLineCount () { | |
| 1241 checkLayout(); | |
| 1242 computeRuns(null); | |
| 1243 return runs.length; | |
| 1244 } | |
| 1245 | |
| 1246 int getLineIndent (int lineIndex) { | |
| 1247 int lineIndent = 0; | |
| 1248 if (lineIndex is 0) { | |
| 1249 lineIndent = indent; | |
| 1250 } else { | |
| 1251 StyleItem[] previousLine = runs[lineIndex - 1]; | |
| 1252 StyleItem previousRun = previousLine[previousLine.length - 1]; | |
| 1253 if (previousRun.lineBreak && !previousRun.softBreak) { | |
| 1254 lineIndent = indent; | |
| 1255 } | |
| 1256 } | |
| 1257 if (wrapWidth !is -1) { | |
| 1258 bool partialLine = true; | |
| 1259 if (justify) { | |
| 1260 StyleItem[] lineRun = runs[lineIndex]; | |
| 1261 if (lineRun[lineRun.length - 1].softBreak) { | |
| 1262 partialLine = false; | |
| 1263 } | |
| 1264 } | |
| 1265 if (partialLine) { | |
| 1266 int lineWidth = this.lineWidth[lineIndex] + lineIndent; | |
| 1267 switch (alignment) { | |
| 1268 case DWT.CENTER: lineIndent += (wrapWidth - lineWidth) / 2; break; | |
| 1269 case DWT.RIGHT: lineIndent += wrapWidth - lineWidth; break; | |
| 1270 } | |
| 1271 } | |
| 1272 } | |
| 1273 return lineIndent; | |
| 1274 } | |
| 1275 | |
| 1276 /** | |
| 1277 * Returns the index of the line that contains the specified | |
| 1278 * character offset. | |
| 1279 * | |
| 1280 * @param offset the character offset | |
| 1281 * @return the line index | |
| 1282 * | |
| 1283 * @exception IllegalArgumentException <ul> | |
| 1284 * <li>ERROR_INVALID_ARGUMENT - if the character offset is out of range</li> | |
| 1285 * </ul> | |
| 1286 * @exception DWTException <ul> | |
| 1287 * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> | |
| 1288 * </ul> | |
| 1289 */ | |
| 1290 public int getLineIndex (int offset) { | |
| 1291 checkLayout(); | |
| 1292 computeRuns(null); | |
| 30 | 1293 int length = text.length; |
| 29 | 1294 if (!(0 <= offset && offset <= length)) DWT.error(DWT.ERROR_INVALID_RANGE); |
| 1295 offset = translateOffset(offset); | |
| 1296 for (int line=0; line<runs.length; line++) { | |
| 1297 if (lineOffset[line + 1] > offset) { | |
| 1298 return line; | |
| 1299 } | |
| 1300 } | |
| 1301 return runs.length - 1; | |
| 1302 } | |
| 1303 | |
| 1304 /** | |
| 1305 * Returns the font metrics for the specified line index. | |
| 1306 * | |
| 1307 * @param lineIndex the line index | |
| 1308 * @return the font metrics | |
| 1309 * | |
| 1310 * @exception IllegalArgumentException <ul> | |
| 1311 * <li>ERROR_INVALID_ARGUMENT - if the line index is out of range</li> | |
| 1312 * </ul> | |
| 1313 * @exception DWTException <ul> | |
| 1314 * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> | |
| 1315 * </ul> | |
| 1316 */ | |
| 1317 public FontMetrics getLineMetrics (int lineIndex) { | |
| 1318 checkLayout(); | |
| 1319 computeRuns(null); | |
| 1320 if (!(0 <= lineIndex && lineIndex < runs.length)) DWT.error(DWT.ERROR_INVALID_RANGE); | |
| 30 | 1321 auto hDC = device.internal_new_GC(null); |
| 1322 auto srcHdc = OS.CreateCompatibleDC(hDC); | |
| 29 | 1323 TEXTMETRIC lptm; |
| 1324 OS.SelectObject(srcHdc, font !is null ? font.handle : device.systemFont); | |
| 1325 OS.GetTextMetrics(srcHdc, &lptm); | |
| 1326 OS.DeleteDC(srcHdc); | |
| 1327 device.internal_dispose_GC(hDC, null); | |
| 1328 | |
| 1329 int ascent = Math.max(lptm.tmAscent, this.ascent); | |
| 1330 int descent = Math.max(lptm.tmDescent, this.descent); | |
| 1331 int leading = lptm.tmInternalLeading; | |
| 30 | 1332 if (text.length !is 0) { |
| 29 | 1333 StyleItem[] lineRuns = runs[lineIndex]; |
| 1334 for (int i = 0; i<lineRuns.length; i++) { | |
| 1335 StyleItem run = lineRuns[i]; | |
| 1336 if (run.ascent > ascent) { | |
| 1337 ascent = run.ascent; | |
| 1338 leading = run.leading; | |
| 1339 } | |
| 1340 descent = Math.max(descent, run.descent); | |
| 1341 } | |
| 1342 } | |
| 1343 lptm.tmAscent = ascent; | |
| 1344 lptm.tmDescent = descent; | |
| 1345 lptm.tmHeight = ascent + descent; | |
| 1346 lptm.tmInternalLeading = leading; | |
| 1347 lptm.tmAveCharWidth = 0; | |
| 30 | 1348 return FontMetrics.win32_new(&lptm); |
| 29 | 1349 } |
| 1350 | |
| 1351 /** | |
| 1352 * Returns the line offsets. Each value in the array is the | |
| 1353 * offset for the first character in a line except for the last | |
| 1354 * value, which contains the length of the text. | |
| 1355 * | |
| 1356 * @return the line offsets | |
| 1357 * | |
| 1358 * @exception DWTException <ul> | |
| 1359 * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> | |
| 1360 * </ul> | |
| 1361 */ | |
| 1362 public int[] getLineOffsets () { | |
| 1363 checkLayout(); | |
| 1364 computeRuns(null); | |
| 1365 int[] offsets = new int[lineOffset.length]; | |
| 1366 for (int i = 0; i < offsets.length; i++) { | |
| 1367 offsets[i] = untranslateOffset(lineOffset[i]); | |
| 1368 } | |
| 1369 return offsets; | |
| 1370 } | |
| 1371 | |
| 1372 /** | |
| 1373 * Returns the location for the specified character offset. The | |
| 1374 * <code>trailing</code> argument indicates whether the offset | |
| 1375 * corresponds to the leading or trailing edge of the cluster. | |
| 1376 * | |
| 1377 * @param offset the character offset | |
| 1378 * @param trailing the trailing flag | |
| 1379 * @return the location of the character offset | |
| 1380 * | |
| 1381 * @exception DWTException <ul> | |
| 1382 * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> | |
| 1383 * </ul> | |
| 1384 * | |
| 1385 * @see #getOffset(Point, int[]) | |
| 1386 * @see #getOffset(int, int, int[]) | |
| 1387 */ | |
| 1388 public Point getLocation (int offset, bool trailing) { | |
| 1389 checkLayout(); | |
| 1390 computeRuns(null); | |
| 30 | 1391 int length = text.length; |
| 29 | 1392 if (!(0 <= offset && offset <= length)) DWT.error(DWT.ERROR_INVALID_RANGE); |
| 30 | 1393 length = segmentsText.length; |
| 29 | 1394 offset = translateOffset(offset); |
| 1395 int line; | |
| 1396 for (line=0; line<runs.length; line++) { | |
| 1397 if (lineOffset[line + 1] > offset) break; | |
| 1398 } | |
| 1399 line = Math.min(line, runs.length - 1); | |
| 1400 StyleItem[] lineRuns = runs[line]; | |
| 1401 Point result = null; | |
| 1402 if (offset is length) { | |
| 1403 result = new Point(lineWidth[line], lineY[line]); | |
| 1404 } else { | |
| 1405 int width = 0; | |
| 1406 for (int i=0; i<lineRuns.length; i++) { | |
| 1407 StyleItem run = lineRuns[i]; | |
| 1408 int end = run.start + run.length; | |
| 1409 if (run.start <= offset && offset < end) { | |
| 1410 if (run.style !is null && run.style.metrics !is null) { | |
| 1411 GlyphMetrics metrics = run.style.metrics; | |
| 1412 width += metrics.width * (offset - run.start + (trailing ? 1 : 0)); | |
| 1413 result = new Point(width, lineY[line]); | |
| 1414 } else if (run.tab) { | |
| 1415 if (trailing || (offset is length)) width += run.width; | |
| 1416 result = new Point(width, lineY[line]); | |
| 1417 } else { | |
| 1418 int runOffset = offset - run.start; | |
| 1419 int cChars = run.length; | |
| 1420 int gGlyphs = run.glyphCount; | |
| 30 | 1421 int piX; |
| 1422 int* advances = run.justify !is null ? run.justify : run.advances; | |
| 1423 OS.ScriptCPtoX(runOffset, trailing, cChars, gGlyphs, run.clusters, run.visAttrs, advances, &run.analysis, &piX); | |
| 29 | 1424 if ((orientation & DWT.RIGHT_TO_LEFT) !is 0) { |
| 30 | 1425 result = new Point(width + (run.width - piX), lineY[line]); |
| 29 | 1426 } else { |
| 30 | 1427 result = new Point(width + piX, lineY[line]); |
| 29 | 1428 } |
| 1429 } | |
| 1430 break; | |
| 1431 } | |
| 1432 width += run.width; | |
| 1433 } | |
| 1434 } | |
| 1435 if (result is null) result = new Point(0, 0); | |
| 1436 result.x += getLineIndent(line); | |
| 1437 return result; | |
| 1438 } | |
| 1439 | |
| 1440 /** | |
| 1441 * Returns the next offset for the specified offset and movement | |
| 1442 * type. The movement is one of <code>DWT.MOVEMENT_CHAR</code>, | |
| 1443 * <code>DWT.MOVEMENT_CLUSTER</code>, <code>DWT.MOVEMENT_WORD</code>, | |
| 1444 * <code>DWT.MOVEMENT_WORD_END</code> or <code>DWT.MOVEMENT_WORD_START</code>. | |
| 1445 * | |
| 1446 * @param offset the start offset | |
| 1447 * @param movement the movement type | |
| 1448 * @return the next offset | |
| 1449 * | |
| 1450 * @exception IllegalArgumentException <ul> | |
| 1451 * <li>ERROR_INVALID_ARGUMENT - if the offset is out of range</li> | |
| 1452 * </ul> | |
| 1453 * @exception DWTException <ul> | |
| 1454 * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> | |
| 1455 * </ul> | |
| 1456 * | |
| 1457 * @see #getPreviousOffset(int, int) | |
| 1458 */ | |
| 1459 public int getNextOffset (int offset, int movement) { | |
| 1460 checkLayout(); | |
| 1461 return _getOffset (offset, movement, true); | |
| 1462 } | |
| 1463 | |
| 1464 int _getOffset(int offset, int movement, bool forward) { | |
| 1465 computeRuns(null); | |
| 30 | 1466 int length = text.length; |
| 29 | 1467 if (!(0 <= offset && offset <= length)) DWT.error(DWT.ERROR_INVALID_RANGE); |
| 1468 if (forward && offset is length) return length; | |
| 1469 if (!forward && offset is 0) return 0; | |
| 1470 int step = forward ? 1 : -1; | |
| 1471 if ((movement & DWT.MOVEMENT_CHAR) !is 0) return offset + step; | |
| 30 | 1472 length = segmentsText.length; |
| 29 | 1473 offset = translateOffset(offset); |
| 30 | 1474 SCRIPT_LOGATTR* logAttr; |
| 1475 SCRIPT_PROPERTIES* properties; | |
| 29 | 1476 int i = forward ? 0 : allRuns.length - 1; |
| 1477 offset = validadeOffset(offset, step); | |
| 1478 do { | |
| 1479 StyleItem run = allRuns[i]; | |
| 1480 if (run.start <= offset && offset < run.start + run.length) { | |
| 1481 if (run.lineBreak && !run.softBreak) return untranslateOffset(run.start); | |
| 1482 if (run.tab) return untranslateOffset(run.start); | |
| 30 | 1483 properties = device.scripts[run.analysis.eScript]; |
| 29 | 1484 bool isComplex = properties.fNeedsCaretInfo || properties.fNeedsWordBreaking; |
| 1485 if (isComplex) breakRun(run); | |
| 1486 while (run.start <= offset && offset < run.start + run.length) { | |
| 1487 if (isComplex) { | |
| 30 | 1488 logAttr = run.psla + (offset - run.start); |
| 29 | 1489 } |
| 1490 switch (movement) { | |
| 1491 case DWT.MOVEMENT_CLUSTER: { | |
| 1492 if (properties.fNeedsCaretInfo) { | |
| 1493 if (!logAttr.fInvalid && logAttr.fCharStop) return untranslateOffset(offset); | |
| 1494 } else { | |
| 1495 return untranslateOffset(offset); | |
| 1496 } | |
| 1497 break; | |
| 1498 } | |
| 1499 case DWT.MOVEMENT_WORD_START: | |
| 1500 case DWT.MOVEMENT_WORD: { | |
| 1501 if (properties.fNeedsWordBreaking) { | |
| 1502 if (!logAttr.fInvalid && logAttr.fWordStop) return untranslateOffset(offset); | |
| 1503 } else { | |
| 1504 if (offset > 0) { | |
| 1505 bool letterOrDigit = Compatibility.isLetterOrDigit(segmentsText.charAt(offset)); | |
| 1506 bool previousLetterOrDigit = Compatibility.isLetterOrDigit(segmentsText.charAt(offset - 1)); | |
| 1507 if (letterOrDigit !is previousLetterOrDigit || !letterOrDigit) { | |
| 1508 if (!Compatibility.isWhitespace(segmentsText.charAt(offset))) { | |
| 1509 return untranslateOffset(offset); | |
| 1510 } | |
| 1511 } | |
| 1512 } | |
| 1513 } | |
| 1514 break; | |
| 1515 } | |
| 1516 case DWT.MOVEMENT_WORD_END: { | |
| 1517 if (offset > 0) { | |
| 1518 bool isLetterOrDigit = Compatibility.isLetterOrDigit(segmentsText.charAt(offset)); | |
| 1519 bool previousLetterOrDigit = Compatibility.isLetterOrDigit(segmentsText.charAt(offset - 1)); | |
| 1520 if (!isLetterOrDigit && previousLetterOrDigit) { | |
| 1521 return untranslateOffset(offset); | |
| 1522 } | |
| 1523 } | |
| 1524 break; | |
| 1525 } | |
| 1526 } | |
| 1527 offset = validadeOffset(offset, step); | |
| 1528 } | |
| 1529 } | |
| 1530 i += step; | |
| 1531 } while (0 <= i && i < allRuns.length - 1 && 0 <= offset && offset < length); | |
| 30 | 1532 return forward ? text.length : 0; |
| 29 | 1533 } |
| 1534 | |
| 1535 /** | |
| 1536 * Returns the character offset for the specified point. | |
| 1537 * For a typical character, the trailing argument will be filled in to | |
| 1538 * indicate whether the point is closer to the leading edge (0) or | |
| 1539 * the trailing edge (1). When the point is over a cluster composed | |
| 1540 * of multiple characters, the trailing argument will be filled with the | |
| 1541 * position of the character in the cluster that is closest to | |
| 1542 * the point. | |
| 1543 * | |
| 1544 * @param point the point | |
| 1545 * @param trailing the trailing buffer | |
| 1546 * @return the character offset | |
| 1547 * | |
| 1548 * @exception IllegalArgumentException <ul> | |
| 1549 * <li>ERROR_INVALID_ARGUMENT - if the trailing length is less than <code>1</code></li> | |
| 1550 * <li>ERROR_NULL_ARGUMENT - if the point is null</li> | |
| 1551 * </ul> | |
| 1552 * @exception DWTException <ul> | |
| 1553 * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> | |
| 1554 * </ul> | |
| 1555 * | |
| 1556 * @see #getLocation(int, bool) | |
| 1557 */ | |
| 1558 public int getOffset (Point point, int[] trailing) { | |
| 1559 checkLayout(); | |
| 1560 if (point is null) DWT.error (DWT.ERROR_NULL_ARGUMENT); | |
| 1561 return getOffset (point.x, point.y, trailing) ; | |
| 1562 } | |
| 1563 | |
| 1564 /** | |
| 1565 * Returns the character offset for the specified point. | |
| 1566 * For a typical character, the trailing argument will be filled in to | |
| 1567 * indicate whether the point is closer to the leading edge (0) or | |
| 1568 * the trailing edge (1). When the point is over a cluster composed | |
| 1569 * of multiple characters, the trailing argument will be filled with the | |
| 1570 * position of the character in the cluster that is closest to | |
| 1571 * the point. | |
| 1572 * | |
| 1573 * @param x the x coordinate of the point | |
| 1574 * @param y the y coordinate of the point | |
| 1575 * @param trailing the trailing buffer | |
| 1576 * @return the character offset | |
| 1577 * | |
| 1578 * @exception IllegalArgumentException <ul> | |
| 1579 * <li>ERROR_INVALID_ARGUMENT - if the trailing length is less than <code>1</code></li> | |
| 1580 * </ul> | |
| 1581 * @exception DWTException <ul> | |
| 1582 * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> | |
| 1583 * </ul> | |
| 1584 * | |
| 1585 * @see #getLocation(int, bool) | |
| 1586 */ | |
| 1587 public int getOffset (int x, int y, int[] trailing) { | |
| 1588 checkLayout(); | |
| 1589 computeRuns(null); | |
| 1590 if (trailing !is null && trailing.length < 1) DWT.error(DWT.ERROR_INVALID_ARGUMENT); | |
| 1591 int line; | |
| 1592 int lineCount = runs.length; | |
| 1593 for (line=0; line<lineCount; line++) { | |
| 1594 if (lineY[line + 1] > y) break; | |
| 1595 } | |
| 1596 line = Math.min(line, runs.length - 1); | |
| 1597 x -= getLineIndent(line); | |
| 1598 StyleItem[] lineRuns = runs[line]; | |
| 1599 if (x >= lineWidth[line]) x = lineWidth[line] - 1; | |
| 1600 if (x < 0) x = 0; | |
| 1601 int width = 0; | |
| 1602 for (int i = 0; i < lineRuns.length; i++) { | |
| 1603 StyleItem run = lineRuns[i]; | |
| 1604 if (run.lineBreak && !run.softBreak) return untranslateOffset(run.start); | |
| 1605 if (width + run.width > x) { | |
| 1606 int xRun = x - width; | |
| 1607 if (run.style !is null && run.style.metrics !is null) { | |
| 1608 GlyphMetrics metrics = run.style.metrics; | |
| 1609 if (metrics.width > 0) { | |
| 1610 if (trailing !is null) { | |
| 1611 trailing[0] = (xRun % metrics.width < metrics.width / 2) ? 0 : 1; | |
| 1612 } | |
| 1613 return untranslateOffset(run.start + xRun / metrics.width); | |
| 1614 } | |
| 1615 } | |
| 1616 if (run.tab) { | |
| 1617 if (trailing !is null) trailing[0] = x < (width + run.width / 2) ? 0 : 1; | |
| 1618 return untranslateOffset(run.start); | |
| 1619 } | |
| 1620 int cChars = run.length; | |
| 1621 int cGlyphs = run.glyphCount; | |
| 30 | 1622 int piCP; |
| 1623 int piTrailing; | |
| 29 | 1624 if ((orientation & DWT.RIGHT_TO_LEFT) !is 0) { |
| 1625 xRun = run.width - xRun; | |
| 1626 } | |
| 30 | 1627 int* advances = run.justify !is null ? run.justify : run.advances; |
| 1628 OS.ScriptXtoCP(xRun, cChars, cGlyphs, run.clusters, run.visAttrs, advances, &run.analysis, &piCP, &piTrailing); | |
| 1629 if (trailing !is null) trailing[0] = piTrailing; | |
| 1630 return untranslateOffset(run.start + piCP); | |
| 29 | 1631 } |
| 1632 width += run.width; | |
| 1633 } | |
| 1634 if (trailing !is null) trailing[0] = 0; | |
| 1635 return untranslateOffset(lineOffset[line + 1]); | |
| 1636 } | |
| 1637 | |
| 1638 /** | |
| 1639 * Returns the orientation of the receiver. | |
| 1640 * | |
| 1641 * @return the orientation style | |
| 1642 * | |
| 1643 * @exception DWTException <ul> | |
| 1644 * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> | |
| 1645 * </ul> | |
| 1646 */ | |
| 1647 public int getOrientation () { | |
| 1648 checkLayout(); | |
| 1649 return orientation; | |
| 1650 } | |
| 1651 | |
| 1652 /** | |
| 1653 * Returns the previous offset for the specified offset and movement | |
| 1654 * type. The movement is one of <code>DWT.MOVEMENT_CHAR</code>, | |
| 1655 * <code>DWT.MOVEMENT_CLUSTER</code> or <code>DWT.MOVEMENT_WORD</code>, | |
| 1656 * <code>DWT.MOVEMENT_WORD_END</code> or <code>DWT.MOVEMENT_WORD_START</code>. | |
| 1657 * | |
| 1658 * @param offset the start offset | |
| 1659 * @param movement the movement type | |
| 1660 * @return the previous offset | |
| 1661 * | |
| 1662 * @exception IllegalArgumentException <ul> | |
| 1663 * <li>ERROR_INVALID_ARGUMENT - if the offset is out of range</li> | |
| 1664 * </ul> | |
| 1665 * @exception DWTException <ul> | |
| 1666 * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> | |
| 1667 * </ul> | |
| 1668 * | |
| 1669 * @see #getNextOffset(int, int) | |
| 1670 */ | |
| 1671 public int getPreviousOffset (int offset, int movement) { | |
| 1672 checkLayout(); | |
| 1673 return _getOffset (offset, movement, false); | |
| 1674 } | |
| 1675 | |
| 1676 /** | |
| 1677 * Gets the ranges of text that are associated with a <code>TextStyle</code>. | |
| 1678 * | |
| 1679 * @return the ranges, an array of offsets representing the start and end of each | |
| 1680 * text style. | |
| 1681 * | |
| 1682 * @exception DWTException <ul> | |
| 1683 * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> | |
| 1684 * </ul> | |
| 1685 * | |
| 1686 * @see #getStyles() | |
| 1687 * | |
| 1688 * @since 3.2 | |
| 1689 */ | |
| 1690 public int[] getRanges () { | |
| 1691 checkLayout(); | |
| 1692 int[] result = new int[styles.length * 2]; | |
| 1693 int count = 0; | |
| 1694 for (int i=0; i<styles.length - 1; i++) { | |
| 1695 if (styles[i].style !is null) { | |
| 1696 result[count++] = styles[i].start; | |
| 1697 result[count++] = styles[i + 1].start - 1; | |
| 1698 } | |
| 1699 } | |
| 1700 if (count !is result.length) { | |
| 1701 int[] newResult = new int[count]; | |
| 1702 System.arraycopy(result, 0, newResult, 0, count); | |
| 1703 result = newResult; | |
| 1704 } | |
| 1705 return result; | |
| 1706 } | |
| 1707 | |
| 1708 /** | |
| 1709 * Returns the text segments offsets of the receiver. | |
| 1710 * | |
| 1711 * @return the text segments offsets | |
| 1712 * | |
| 1713 * @exception DWTException <ul> | |
| 1714 * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> | |
| 1715 * </ul> | |
| 1716 */ | |
| 1717 public int[] getSegments () { | |
| 1718 checkLayout(); | |
| 1719 return segments; | |
| 1720 } | |
| 1721 | |
| 1722 char[] getSegmentsText() { | |
| 1723 if (segments is null) return text; | |
| 1724 int nSegments = segments.length; | |
| 1725 if (nSegments <= 1) return text; | |
| 30 | 1726 int length = text.length; |
| 29 | 1727 if (length is 0) return text; |
| 1728 if (nSegments is 2) { | |
| 1729 if (segments[0] is 0 && segments[1] is length) return text; | |
| 1730 } | |
| 1731 char[] oldChars = new char[length]; | |
| 1732 text.getChars(0, length, oldChars, 0); | |
| 1733 char[] newChars = new char[length + nSegments]; | |
| 1734 int charCount = 0, segmentCount = 0; | |
| 30 | 1735 wchar separator = orientation is DWT.RIGHT_TO_LEFT ? RTL_MARK : LTR_MARK; |
| 29 | 1736 while (charCount < length) { |
| 1737 if (segmentCount < nSegments && charCount is segments[segmentCount]) { | |
| 1738 newChars[charCount + segmentCount++] = separator; | |
| 1739 } else { | |
| 1740 newChars[charCount + segmentCount] = oldChars[charCount++]; | |
| 1741 } | |
| 1742 } | |
| 1743 if (segmentCount < nSegments) { | |
| 1744 segments[segmentCount] = charCount; | |
| 1745 newChars[charCount + segmentCount++] = separator; | |
| 1746 } | |
| 30 | 1747 return newChars[ 0 .. Math.min(charCount + segmentCount, newChars.length)].dup; |
| 29 | 1748 } |
| 1749 | |
| 1750 /** | |
| 1751 * Returns the line spacing of the receiver. | |
| 1752 * | |
| 1753 * @return the line spacing | |
| 1754 * | |
| 1755 * @exception DWTException <ul> | |
| 1756 * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> | |
| 1757 * </ul> | |
| 1758 */ | |
| 1759 public int getSpacing () { | |
| 1760 checkLayout(); | |
| 1761 return lineSpacing; | |
| 1762 } | |
| 1763 | |
| 1764 /** | |
| 1765 * Gets the style of the receiver at the specified character offset. | |
| 1766 * | |
| 1767 * @param offset the text offset | |
| 1768 * @return the style or <code>null</code> if not set | |
| 1769 * | |
| 1770 * @exception IllegalArgumentException <ul> | |
| 1771 * <li>ERROR_INVALID_ARGUMENT - if the character offset is out of range</li> | |
| 1772 * </ul> | |
| 1773 * @exception DWTException <ul> | |
| 1774 * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> | |
| 1775 * </ul> | |
| 1776 */ | |
| 1777 public TextStyle getStyle (int offset) { | |
| 1778 checkLayout(); | |
| 30 | 1779 int length = text.length; |
| 29 | 1780 if (!(0 <= offset && offset < length)) DWT.error(DWT.ERROR_INVALID_RANGE); |
| 1781 for (int i=1; i<styles.length; i++) { | |
| 1782 if (styles[i].start > offset) { | |
| 1783 return styles[i - 1].style; | |
| 1784 } | |
| 1785 } | |
| 1786 return null; | |
| 1787 } | |
| 1788 | |
| 1789 /** | |
| 1790 * Gets all styles of the receiver. | |
| 1791 * | |
| 1792 * @return the styles | |
| 1793 * | |
| 1794 * @exception DWTException <ul> | |
| 1795 * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> | |
| 1796 * </ul> | |
| 1797 * | |
| 1798 * @see #getRanges() | |
| 1799 * | |
| 1800 * @since 3.2 | |
| 1801 */ | |
| 1802 public TextStyle[] getStyles () { | |
| 1803 checkLayout(); | |
| 1804 TextStyle[] result = new TextStyle[styles.length]; | |
| 1805 int count = 0; | |
| 1806 for (int i=0; i<styles.length; i++) { | |
| 1807 if (styles[i].style !is null) { | |
| 1808 result[count++] = styles[i].style; | |
| 1809 } | |
| 1810 } | |
| 1811 if (count !is result.length) { | |
| 1812 TextStyle[] newResult = new TextStyle[count]; | |
| 1813 System.arraycopy(result, 0, newResult, 0, count); | |
| 1814 result = newResult; | |
| 1815 } | |
| 1816 return result; | |
| 1817 } | |
| 1818 | |
| 1819 /** | |
| 1820 * Returns the tab list of the receiver. | |
| 1821 * | |
| 1822 * @return the tab list | |
| 1823 * | |
| 1824 * @exception DWTException <ul> | |
| 1825 * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> | |
| 1826 * </ul> | |
| 1827 */ | |
| 1828 public int[] getTabs () { | |
| 1829 checkLayout(); | |
| 1830 return tabs; | |
| 1831 } | |
| 1832 | |
| 1833 /** | |
| 1834 * Gets the receiver's text, which will be an empty | |
| 1835 * string if it has never been set. | |
| 1836 * | |
| 1837 * @return the receiver's text | |
| 1838 * | |
| 1839 * @exception DWTException <ul> | |
| 1840 * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> | |
| 1841 * </ul> | |
| 1842 */ | |
| 1843 public char[] getText () { | |
| 1844 checkLayout(); | |
| 1845 return text; | |
| 1846 } | |
| 1847 | |
| 1848 /** | |
| 1849 * Returns the width of the receiver. | |
| 1850 * | |
| 1851 * @return the width | |
| 1852 * | |
| 1853 * @exception DWTException <ul> | |
| 1854 * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> | |
| 1855 * </ul> | |
| 1856 */ | |
| 1857 public int getWidth () { | |
| 1858 checkLayout(); | |
| 1859 return wrapWidth; | |
| 1860 } | |
| 1861 | |
| 1862 /** | |
| 1863 * Returns <code>true</code> if the text layout has been disposed, | |
| 1864 * and <code>false</code> otherwise. | |
| 1865 * <p> | |
| 1866 * This method gets the dispose state for the text layout. | |
| 1867 * When a text layout has been disposed, it is an error to | |
| 1868 * invoke any other method using the text layout. | |
| 1869 * </p> | |
| 1870 * | |
| 1871 * @return <code>true</code> when the text layout is disposed and <code>false</code> otherwise | |
| 1872 */ | |
|
48
9a64a7781bab
Added override and alias, first chunk. Thanks torhu for doing this patch.
Frank Benoit <benoit@tionex.de>
parents:
31
diff
changeset
|
1873 override public bool isDisposed () { |
| 29 | 1874 return device is null; |
| 1875 } | |
| 1876 | |
| 1877 /* | |
| 1878 * Itemize the receiver text | |
| 1879 */ | |
| 1880 StyleItem[] itemize () { | |
| 1881 segmentsText = getSegmentsText(); | |
| 30 | 1882 int length = segmentsText.length; |
| 1883 SCRIPT_CONTROL scriptControl; | |
| 1884 SCRIPT_STATE scriptState; | |
| 29 | 1885 final int MAX_ITEM = length + 1; |
| 1886 | |
| 1887 if ((orientation & DWT.RIGHT_TO_LEFT) !is 0) { | |
| 1888 scriptState.uBidiLevel = 1; | |
| 1889 scriptState.fArabicNumContext = true; | |
| 30 | 1890 SCRIPT_DIGITSUBSTITUTE psds; |
| 1891 OS.ScriptRecordDigitSubstitution(OS.LOCALE_USER_DEFAULT, &psds); | |
| 1892 OS.ScriptApplyDigitSubstitution(&psds, &scriptControl, &scriptState); | |
| 29 | 1893 } |
| 1894 | |
| 30 | 1895 auto hHeap = OS.GetProcessHeap(); |
| 1896 auto pItems = cast(SCRIPT_ITEM*)OS.HeapAlloc(hHeap, OS.HEAP_ZERO_MEMORY, MAX_ITEM * SCRIPT_ITEM.sizeof); | |
| 1897 if (pItems is null) DWT.error(DWT.ERROR_NO_HANDLES); | |
| 1898 int pcItems; | |
| 1899 wchar[] chars = StrToWCHARs( segmentsText ); | |
| 1900 OS.ScriptItemize(chars.ptr, chars.length, MAX_ITEM, &scriptControl, &scriptState, pItems, &pcItems); | |
| 29 | 1901 // if (hr is E_OUTOFMEMORY) //TODO handle it |
| 1902 | |
| 30 | 1903 StyleItem[] runs = merge(pItems, pcItems); |
| 29 | 1904 OS.HeapFree(hHeap, 0, pItems); |
| 1905 return runs; | |
| 1906 } | |
| 1907 | |
| 1908 /* | |
| 1909 * Merge styles ranges and script items | |
| 1910 */ | |
| 30 | 1911 StyleItem[] merge (SCRIPT_ITEM* items, int itemCount) { |
| 1912 int count = 0, start = 0, end = segmentsText.length, itemIndex = 0, styleIndex = 0; | |
| 29 | 1913 StyleItem[] runs = new StyleItem[itemCount + styles.length]; |
| 30 | 1914 SCRIPT_ITEM* scriptItem; |
| 29 | 1915 bool linkBefore = false; |
| 1916 while (start < end) { | |
| 1917 StyleItem item = new StyleItem(); | |
| 1918 item.start = start; | |
| 1919 item.style = styles[styleIndex].style; | |
| 1920 runs[count++] = item; | |
| 30 | 1921 scriptItem = items + itemIndex; |
| 29 | 1922 item.analysis = scriptItem.a; |
| 1923 if (linkBefore) { | |
| 1924 item.analysis.fLinkBefore = true; | |
| 1925 linkBefore = false; | |
| 1926 } | |
| 30 | 1927 //scriptItem.a = new SCRIPT_ANALYSIS(); |
| 1928 scriptItem = items + (itemIndex + 1); | |
| 29 | 1929 int itemLimit = scriptItem.iCharPos; |
| 1930 int styleLimit = translateOffset(styles[styleIndex + 1].start); | |
| 1931 if (styleLimit <= itemLimit) { | |
| 1932 styleIndex++; | |
| 1933 start = styleLimit; | |
| 1934 if (start < itemLimit && 0 < start && start < end) { | |
| 1935 char pChar = segmentsText.charAt(start - 1); | |
| 1936 char tChar = segmentsText.charAt(start); | |
| 1937 if (!Compatibility.isWhitespace(pChar) && !Compatibility.isWhitespace(tChar)) { | |
| 1938 item.analysis.fLinkAfter = true; | |
| 1939 linkBefore = true; | |
| 1940 } | |
| 1941 } | |
| 1942 } | |
| 1943 if (itemLimit <= styleLimit) { | |
| 1944 itemIndex++; | |
| 1945 start = itemLimit; | |
| 1946 } | |
| 1947 item.length = start - item.start; | |
| 1948 } | |
| 1949 StyleItem item = new StyleItem(); | |
| 1950 item.start = end; | |
| 30 | 1951 scriptItem = items + itemCount; |
| 29 | 1952 item.analysis = scriptItem.a; |
| 1953 runs[count++] = item; | |
| 1954 if (runs.length !is count) { | |
| 1955 StyleItem[] result = new StyleItem[count]; | |
| 1956 System.arraycopy(runs, 0, result, 0, count); | |
| 1957 return result; | |
| 1958 } | |
| 1959 return runs; | |
| 1960 } | |
| 1961 | |
| 1962 /* | |
| 1963 * Reorder the run | |
| 1964 */ | |
| 1965 StyleItem[] reorder (StyleItem[] runs, bool terminate) { | |
| 30 | 1966 int length_ = runs.length; |
| 1967 if (length_ <= 1) return runs; | |
| 1968 ubyte[] bidiLevels = new ubyte[length_]; | |
| 1969 for (int i=0; i<length_; i++) { | |
| 29 | 1970 bidiLevels[i] = cast(byte)(runs[i].analysis.s.uBidiLevel & 0x1F); |
| 1971 } | |
| 1972 /* | |
| 1973 * Feature in Windows. If the orientation is RTL Uniscribe will | |
| 1974 * resolve the level of line breaks to 1, this can cause the line | |
| 1975 * break to be reorder to the middle of the line. The fix is to set | |
| 1976 * the level to zero to prevent it to be reordered. | |
| 1977 */ | |
| 30 | 1978 StyleItem lastRun = runs[length_ - 1]; |
| 29 | 1979 if (lastRun.lineBreak && !lastRun.softBreak) { |
| 30 | 1980 bidiLevels[length_ - 1] = 0; |
| 29 | 1981 } |
| 30 | 1982 int[] log2vis = new int[length_]; |
| 1983 OS.ScriptLayout(length_, bidiLevels.ptr, null, log2vis.ptr); | |
| 1984 StyleItem[] result = new StyleItem[length_]; | |
| 1985 for (int i=0; i<length_; i++) { | |
| 29 | 1986 result[log2vis[i]] = runs[i]; |
| 1987 } | |
| 1988 if ((orientation & DWT.RIGHT_TO_LEFT) !is 0) { | |
| 30 | 1989 if (terminate) length_--; |
| 1990 for (int i = 0; i < length_ / 2 ; i++) { | |
| 29 | 1991 StyleItem tmp = result[i]; |
| 30 | 1992 result[i] = result[length_ - i - 1]; |
| 1993 result[length_ - i - 1] = tmp; | |
| 29 | 1994 } |
| 1995 } | |
| 1996 return result; | |
| 1997 } | |
| 1998 | |
| 1999 /** | |
| 2000 * Sets the text alignment for the receiver. The alignment controls | |
| 2001 * how a line of text is positioned horizontally. The argument should | |
| 2002 * be one of <code>DWT.LEFT</code>, <code>DWT.RIGHT</code> or <code>DWT.CENTER</code>. | |
| 2003 * <p> | |
| 2004 * The default alignment is <code>DWT.LEFT</code>. Note that the receiver's | |
| 2005 * width must be set in order to use <code>DWT.RIGHT</code> or <code>DWT.CENTER</code> | |
| 2006 * alignment. | |
| 2007 * </p> | |
| 2008 * | |
| 2009 * @param alignment the new alignment | |
| 2010 * | |
| 2011 * @exception DWTException <ul> | |
| 2012 * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> | |
| 2013 * </ul> | |
| 2014 * | |
| 2015 * @see #setWidth(int) | |
| 2016 */ | |
| 2017 public void setAlignment (int alignment) { | |
| 2018 checkLayout(); | |
| 2019 int mask = DWT.LEFT | DWT.CENTER | DWT.RIGHT; | |
| 2020 alignment &= mask; | |
| 2021 if (alignment is 0) return; | |
| 2022 if ((alignment & DWT.LEFT) !is 0) alignment = DWT.LEFT; | |
| 2023 if ((alignment & DWT.RIGHT) !is 0) alignment = DWT.RIGHT; | |
| 2024 if (this.alignment is alignment) return; | |
| 2025 freeRuns(); | |
| 2026 this.alignment = alignment; | |
| 2027 } | |
| 2028 | |
| 2029 /** | |
| 2030 * Sets the ascent of the receiver. The ascent is distance in pixels | |
| 2031 * from the baseline to the top of the line and it is applied to all | |
| 2032 * lines. The default value is <code>-1</code> which means that the | |
| 2033 * ascent is calculated from the line fonts. | |
| 2034 * | |
| 2035 * @param ascent the new ascent | |
| 2036 * | |
| 2037 * @exception IllegalArgumentException <ul> | |
| 2038 * <li>ERROR_INVALID_ARGUMENT - if the ascent is less than <code>-1</code></li> | |
| 2039 * </ul> | |
| 2040 * @exception DWTException <ul> | |
| 2041 * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> | |
| 2042 * </ul> | |
| 2043 * | |
| 2044 * @see #setDescent(int) | |
| 2045 * @see #getLineMetrics(int) | |
| 2046 */ | |
| 2047 public void setAscent(int ascent) { | |
| 2048 checkLayout(); | |
| 2049 if (ascent < -1) DWT.error(DWT.ERROR_INVALID_ARGUMENT); | |
| 2050 if (this.ascent is ascent) return; | |
| 2051 freeRuns(); | |
| 2052 this.ascent = ascent; | |
| 2053 } | |
| 2054 | |
| 2055 /** | |
| 2056 * Sets the descent of the receiver. The descent is distance in pixels | |
| 2057 * from the baseline to the bottom of the line and it is applied to all | |
| 2058 * lines. The default value is <code>-1</code> which means that the | |
| 2059 * descent is calculated from the line fonts. | |
| 2060 * | |
| 2061 * @param descent the new descent | |
| 2062 * | |
| 2063 * @exception IllegalArgumentException <ul> | |
| 2064 * <li>ERROR_INVALID_ARGUMENT - if the descent is less than <code>-1</code></li> | |
| 2065 * </ul> | |
| 2066 * @exception DWTException <ul> | |
| 2067 * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> | |
| 2068 * </ul> | |
| 2069 * | |
| 2070 * @see #setAscent(int) | |
| 2071 * @see #getLineMetrics(int) | |
| 2072 */ | |
| 2073 public void setDescent(int descent) { | |
| 2074 checkLayout(); | |
| 2075 if (descent < -1) DWT.error(DWT.ERROR_INVALID_ARGUMENT); | |
| 2076 if (this.descent is descent) return; | |
| 2077 freeRuns(); | |
| 2078 this.descent = descent; | |
| 2079 } | |
| 2080 | |
| 2081 /** | |
| 2082 * Sets the default font which will be used by the receiver | |
| 2083 * to draw and measure text. If the | |
| 2084 * argument is null, then a default font appropriate | |
| 2085 * for the platform will be used instead. Note that a text | |
| 2086 * style can override the default font. | |
| 2087 * | |
| 2088 * @param font the new font for the receiver, or null to indicate a default font | |
| 2089 * | |
| 2090 * @exception IllegalArgumentException <ul> | |
| 2091 * <li>ERROR_INVALID_ARGUMENT - if the font has been disposed</li> | |
| 2092 * </ul> | |
| 2093 * @exception DWTException <ul> | |
| 2094 * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> | |
| 2095 * </ul> | |
| 2096 */ | |
| 2097 public void setFont (Font font) { | |
| 2098 checkLayout(); | |
| 2099 if (font !is null && font.isDisposed()) DWT.error(DWT.ERROR_INVALID_ARGUMENT); | |
| 2100 if (this.font is font) return; | |
| 30 | 2101 if (font !is null && font ==/*eq*/ this.font) return; |
| 29 | 2102 freeRuns(); |
| 2103 this.font = font; | |
| 2104 } | |
| 2105 | |
| 2106 /** | |
| 2107 * Sets the indent of the receiver. This indent it applied of the first line of | |
| 2108 * each paragraph. | |
| 2109 * | |
| 2110 * @param indent new indent | |
| 2111 * | |
| 2112 * @exception DWTException <ul> | |
| 2113 * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> | |
| 2114 * </ul> | |
| 2115 * | |
| 2116 * @since 3.2 | |
| 2117 */ | |
| 2118 public void setIndent (int indent) { | |
| 2119 checkLayout(); | |
| 2120 if (indent < 0) return; | |
| 2121 if (this.indent is indent) return; | |
| 2122 freeRuns(); | |
| 2123 this.indent = indent; | |
| 2124 } | |
| 2125 | |
| 2126 /** | |
| 2127 * Sets the justification of the receiver. Note that the receiver's | |
| 2128 * width must be set in order to use justification. | |
| 2129 * | |
| 2130 * @param justify new justify | |
| 2131 * | |
| 2132 * @exception DWTException <ul> | |
| 2133 * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> | |
| 2134 * </ul> | |
| 2135 * | |
| 2136 * @since 3.2 | |
| 2137 */ | |
| 2138 public void setJustify (bool justify) { | |
| 2139 checkLayout(); | |
| 2140 if (this.justify is justify) return; | |
| 2141 freeRuns(); | |
| 2142 this.justify = justify; | |
| 2143 } | |
| 2144 | |
| 2145 /** | |
| 2146 * Sets the orientation of the receiver, which must be one | |
| 2147 * of <code>DWT.LEFT_TO_RIGHT</code> or <code>DWT.RIGHT_TO_LEFT</code>. | |
| 2148 * | |
| 2149 * @param orientation new orientation style | |
| 2150 * | |
| 2151 * @exception DWTException <ul> | |
| 2152 * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> | |
| 2153 * </ul> | |
| 2154 */ | |
| 2155 public void setOrientation (int orientation) { | |
| 2156 checkLayout(); | |
| 2157 int mask = DWT.LEFT_TO_RIGHT | DWT.RIGHT_TO_LEFT; | |
| 2158 orientation &= mask; | |
| 2159 if (orientation is 0) return; | |
| 2160 if ((orientation & DWT.LEFT_TO_RIGHT) !is 0) orientation = DWT.LEFT_TO_RIGHT; | |
| 2161 if (this.orientation is orientation) return; | |
| 2162 this.orientation = orientation; | |
| 2163 freeRuns(); | |
| 2164 } | |
| 2165 | |
| 2166 /** | |
| 2167 * Sets the offsets of the receiver's text segments. Text segments are used to | |
| 2168 * override the default behaviour of the bidirectional algorithm. | |
| 2169 * Bidirectional reordering can happen within a text segment but not | |
| 2170 * between two adjacent segments. | |
| 2171 * <p> | |
| 2172 * Each text segment is determined by two consecutive offsets in the | |
| 2173 * <code>segments</code> arrays. The first element of the array should | |
| 2174 * always be zero and the last one should always be equals to length of | |
| 2175 * the text. | |
| 2176 * </p> | |
| 2177 * | |
| 2178 * @param segments the text segments offset | |
| 2179 * | |
| 2180 * @exception DWTException <ul> | |
| 2181 * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> | |
| 2182 * </ul> | |
| 2183 */ | |
| 2184 public void setSegments(int[] segments) { | |
| 2185 checkLayout(); | |
| 2186 if (this.segments is null && segments is null) return; | |
| 2187 if (this.segments !is null && segments !is null) { | |
| 2188 if (this.segments.length is segments.length) { | |
| 2189 int i; | |
| 2190 for (i = 0; i <segments.length; i++) { | |
| 2191 if (this.segments[i] !is segments[i]) break; | |
| 2192 } | |
| 2193 if (i is segments.length) return; | |
| 2194 } | |
| 2195 } | |
| 2196 freeRuns(); | |
| 2197 this.segments = segments; | |
| 2198 } | |
| 2199 | |
| 2200 /** | |
| 2201 * Sets the line spacing of the receiver. The line spacing | |
| 2202 * is the space left between lines. | |
| 2203 * | |
| 2204 * @param spacing the new line spacing | |
| 2205 * | |
| 2206 * @exception IllegalArgumentException <ul> | |
| 2207 * <li>ERROR_INVALID_ARGUMENT - if the spacing is negative</li> | |
| 2208 * </ul> | |
| 2209 * @exception DWTException <ul> | |
| 2210 * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> | |
| 2211 * </ul> | |
| 2212 */ | |
| 2213 public void setSpacing (int spacing) { | |
| 2214 checkLayout(); | |
| 2215 if (spacing < 0) DWT.error(DWT.ERROR_INVALID_ARGUMENT); | |
| 2216 if (this.lineSpacing is spacing) return; | |
| 2217 freeRuns(); | |
| 2218 this.lineSpacing = spacing; | |
| 2219 } | |
| 2220 | |
| 2221 /** | |
| 2222 * Sets the style of the receiver for the specified range. Styles previously | |
| 2223 * set for that range will be overwritten. The start and end offsets are | |
| 2224 * inclusive and will be clamped if out of range. | |
| 2225 * | |
| 2226 * @param style the style | |
| 2227 * @param start the start offset | |
| 2228 * @param end the end offset | |
| 2229 * | |
| 2230 * @exception DWTException <ul> | |
| 2231 * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> | |
| 2232 * </ul> | |
| 2233 */ | |
| 2234 public void setStyle (TextStyle style, int start, int end) { | |
| 2235 checkLayout(); | |
| 30 | 2236 int length_ = text.length; |
| 2237 if (length_ is 0) return; | |
| 29 | 2238 if (start > end) return; |
| 30 | 2239 start = Math.min(Math.max(0, start), length_ - 1); |
| 2240 end = Math.min(Math.max(0, end), length_ - 1); | |
| 29 | 2241 int low = -1; |
| 2242 int high = styles.length; | |
| 2243 while (high - low > 1) { | |
| 2244 int index = (high + low) / 2; | |
| 2245 if (styles[index + 1].start > start) { | |
| 2246 high = index; | |
| 2247 } else { | |
| 2248 low = index; | |
| 2249 } | |
| 2250 } | |
| 2251 if (0 <= high && high < styles.length) { | |
| 2252 StyleItem item = styles[high]; | |
| 2253 if (item.start is start && styles[high + 1].start - 1 is end) { | |
| 2254 if (style is null) { | |
| 2255 if (item.style is null) return; | |
| 2256 } else { | |
| 30 | 2257 if (style ==/*eq*/ item.style) return; |
| 29 | 2258 } |
| 2259 } | |
| 2260 } | |
| 2261 freeRuns(); | |
| 2262 int modifyStart = high; | |
| 2263 int modifyEnd = modifyStart; | |
| 2264 while (modifyEnd < styles.length) { | |
| 2265 if (styles[modifyEnd + 1].start > end) break; | |
| 2266 modifyEnd++; | |
| 2267 } | |
| 2268 if (modifyStart is modifyEnd) { | |
| 2269 int styleStart = styles[modifyStart].start; | |
| 2270 int styleEnd = styles[modifyEnd + 1].start - 1; | |
| 2271 if (styleStart is start && styleEnd is end) { | |
| 2272 styles[modifyStart].style = style; | |
| 2273 return; | |
| 2274 } | |
| 2275 if (styleStart !is start && styleEnd !is end) { | |
| 2276 StyleItem[] newStyles = new StyleItem[styles.length + 2]; | |
| 2277 System.arraycopy(styles, 0, newStyles, 0, modifyStart + 1); | |
| 2278 StyleItem item = new StyleItem(); | |
| 2279 item.start = start; | |
| 2280 item.style = style; | |
| 2281 newStyles[modifyStart + 1] = item; | |
| 2282 item = new StyleItem(); | |
| 2283 item.start = end + 1; | |
| 2284 item.style = styles[modifyStart].style; | |
| 2285 newStyles[modifyStart + 2] = item; | |
| 2286 System.arraycopy(styles, modifyEnd + 1, newStyles, modifyEnd + 3, styles.length - modifyEnd - 1); | |
| 2287 styles = newStyles; | |
| 2288 return; | |
| 2289 } | |
| 2290 } | |
| 2291 if (start is styles[modifyStart].start) modifyStart--; | |
| 2292 if (end is styles[modifyEnd + 1].start - 1) modifyEnd++; | |
| 2293 int newLength = styles.length + 1 - (modifyEnd - modifyStart - 1); | |
| 2294 StyleItem[] newStyles = new StyleItem[newLength]; | |
| 2295 System.arraycopy(styles, 0, newStyles, 0, modifyStart + 1); | |
| 2296 StyleItem item = new StyleItem(); | |
| 2297 item.start = start; | |
| 2298 item.style = style; | |
| 2299 newStyles[modifyStart + 1] = item; | |
| 2300 styles[modifyEnd].start = end + 1; | |
| 2301 System.arraycopy(styles, modifyEnd, newStyles, modifyStart + 2, styles.length - modifyEnd); | |
| 2302 styles = newStyles; | |
| 2303 } | |
| 2304 | |
| 2305 /** | |
| 2306 * Sets the receiver's tab list. Each value in the tab list specifies | |
| 2307 * the space in pixels from the origin of the text layout to the respective | |
| 2308 * tab stop. The last tab stop width is repeated continuously. | |
| 2309 * | |
| 2310 * @param tabs the new tab list | |
| 2311 * | |
| 2312 * @exception DWTException <ul> | |
| 2313 * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> | |
| 2314 * </ul> | |
| 2315 */ | |
| 2316 public void setTabs (int[] tabs) { | |
| 2317 checkLayout(); | |
| 2318 if (this.tabs is null && tabs is null) return; | |
| 2319 if (this.tabs !is null && tabs !is null) { | |
| 2320 if (this.tabs.length is tabs.length) { | |
| 2321 int i; | |
| 2322 for (i = 0; i <tabs.length; i++) { | |
| 2323 if (this.tabs[i] !is tabs[i]) break; | |
| 2324 } | |
| 2325 if (i is tabs.length) return; | |
| 2326 } | |
| 2327 } | |
| 2328 freeRuns(); | |
| 2329 this.tabs = tabs; | |
| 2330 } | |
| 2331 | |
| 2332 /** | |
| 2333 * Sets the receiver's text. | |
| 2334 * | |
| 2335 * @param text the new text | |
| 2336 * | |
| 2337 * @exception IllegalArgumentException <ul> | |
| 2338 * <li>ERROR_NULL_ARGUMENT - if the text is null</li> | |
| 2339 * </ul> | |
| 2340 * @exception DWTException <ul> | |
| 2341 * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> | |
| 2342 * </ul> | |
| 2343 */ | |
| 2344 public void setText (char[] text) { | |
| 2345 checkLayout(); | |
| 2346 if (text is null) DWT.error(DWT.ERROR_NULL_ARGUMENT); | |
| 30 | 2347 if (text==/*eq*/this.text) return; |
| 29 | 2348 freeRuns(); |
| 2349 this.text = text; | |
| 2350 styles = new StyleItem[2]; | |
| 2351 styles[0] = new StyleItem(); | |
| 2352 styles[1] = new StyleItem(); | |
| 30 | 2353 styles[1].start = text.length; |
| 29 | 2354 } |
| 2355 | |
| 2356 /** | |
| 2357 * Sets the line width of the receiver, which determines how | |
| 2358 * text should be wrapped and aligned. The default value is | |
| 2359 * <code>-1</code> which means wrapping is disabled. | |
| 2360 * | |
| 2361 * @param width the new width | |
| 2362 * | |
| 2363 * @exception IllegalArgumentException <ul> | |
| 2364 * <li>ERROR_INVALID_ARGUMENT - if the width is <code>0</code> or less than <code>-1</code></li> | |
| 2365 * </ul> | |
| 2366 * @exception DWTException <ul> | |
| 2367 * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> | |
| 2368 * </ul> | |
| 2369 * | |
| 2370 * @see #setAlignment(int) | |
| 2371 */ | |
| 2372 public void setWidth (int width) { | |
| 2373 checkLayout(); | |
| 2374 if (width < -1 || width is 0) DWT.error(DWT.ERROR_INVALID_ARGUMENT); | |
| 2375 if (this.wrapWidth is width) return; | |
| 2376 freeRuns(); | |
| 2377 this.wrapWidth = width; | |
| 2378 } | |
| 2379 | |
| 30 | 2380 bool shape (HDC hdc, StyleItem run, char[] chars, int[] glyphCount, int maxGlyphs) { |
| 2381 wchar[] wchars = StrToWCHARs( chars ); | |
| 2382 auto hr = OS.ScriptShape(hdc, run.psc, wchars.ptr, wchars.length, maxGlyphs, &run.analysis, run.glyphs, run.clusters, run.visAttrs, glyphCount.ptr); | |
| 29 | 2383 run.glyphCount = glyphCount[0]; |
| 2384 if (hr !is OS.USP_E_SCRIPT_NOT_IN_FONT) { | |
| 30 | 2385 SCRIPT_FONTPROPERTIES fp; |
| 29 | 2386 fp.cBytes = SCRIPT_FONTPROPERTIES.sizeof; |
| 30 | 2387 OS.ScriptGetFontProperties(hdc, run.psc, &fp); |
| 2388 ushort[] glyphs = run.glyphs[ 0 .. glyphCount[0] ]; | |
| 29 | 2389 int i; |
| 2390 for (i = 0; i < glyphs.length; i++) { | |
| 2391 if (glyphs[i] is fp.wgDefault) break; | |
| 2392 } | |
| 2393 if (i is glyphs.length) return true; | |
| 2394 } | |
| 30 | 2395 if (run.psc !is null) { |
| 29 | 2396 OS.ScriptFreeCache(run.psc); |
| 2397 glyphCount[0] = 0; | |
| 30 | 2398 *cast(int*)run.psc = 0; |
| 29 | 2399 } |
| 2400 run.glyphCount = 0; | |
| 2401 return false; | |
| 2402 } | |
| 2403 | |
| 2404 /* | |
| 2405 * Generate glyphs for one Run. | |
| 2406 */ | |
| 2407 void shape (HDC hdc, StyleItem run) { | |
| 2408 int[] buffer = new int[1]; | |
| 2409 char[] chars = new char[run.length]; | |
| 2410 segmentsText.getChars(run.start, run.start + run.length, chars, 0); | |
| 30 | 2411 wchar[] wchars = StrToWCHARs( chars ); |
| 29 | 2412 int maxGlyphs = (chars.length * 3 / 2) + 16; |
| 30 | 2413 auto hHeap = OS.GetProcessHeap(); |
| 2414 run.glyphs = cast(ushort*)OS.HeapAlloc(hHeap, OS.HEAP_ZERO_MEMORY, maxGlyphs * 2); | |
| 2415 if (run.glyphs is null) DWT.error(DWT.ERROR_NO_HANDLES); | |
| 2416 run.clusters = cast(WORD*)OS.HeapAlloc(hHeap, OS.HEAP_ZERO_MEMORY, maxGlyphs * 2); | |
| 2417 if (run.clusters is null) DWT.error(DWT.ERROR_NO_HANDLES); | |
| 2418 run.visAttrs = cast(SCRIPT_VISATTR*)OS.HeapAlloc(hHeap, OS.HEAP_ZERO_MEMORY, maxGlyphs * SCRIPT_VISATTR_SIZEOF); | |
| 2419 if (run.visAttrs is null) DWT.error(DWT.ERROR_NO_HANDLES); | |
| 2420 run.psc = cast(SCRIPT_CACHE*)OS.HeapAlloc(hHeap, OS.HEAP_ZERO_MEMORY, 4); | |
| 2421 if (run.psc is null) DWT.error(DWT.ERROR_NO_HANDLES); | |
| 29 | 2422 if (!shape(hdc, run, chars, buffer, maxGlyphs)) { |
| 30 | 2423 if (mLangFontLink2 !is null) { |
| 2424 int dwCodePages; | |
| 2425 int cchCodePages; | |
| 29 | 2426 /* GetStrCodePages() */ |
| 30 | 2427 OS.VtblCall(4, mLangFontLink2, cast(int)wchars.ptr, wchars.length, 0, cast(int)&dwCodePages, cast(int)&cchCodePages); |
| 2428 HFONT hNewFont; | |
| 29 | 2429 /* MapFont() */ |
| 30 | 2430 if (OS.VtblCall(10, mLangFontLink2, cast(int)hdc, dwCodePages, cast(int)wchars[0], cast(int)hNewFont) is OS.S_OK) { |
| 2431 auto hFont = OS.SelectObject(hdc, hNewFont); | |
| 29 | 2432 if (shape(hdc, run, chars, buffer, maxGlyphs)) { |
| 30 | 2433 run.fallbackFont = hNewFont; |
| 29 | 2434 } else { |
| 2435 /* ReleaseFont() */ | |
| 30 | 2436 OS.VtblCall(8, mLangFontLink2, cast(int)hNewFont); |
| 29 | 2437 OS.SelectObject(hdc, hFont); |
| 30 | 2438 SCRIPT_PROPERTIES* properties; |
| 2439 properties = device.scripts[run.analysis.eScript]; | |
| 29 | 2440 if (properties.fPrivateUseArea) { |
| 2441 run.analysis.fNoGlyphIndex = true; | |
| 2442 } | |
| 30 | 2443 OS.ScriptShape(hdc, run.psc, wchars.ptr, wchars.length, maxGlyphs, &run.analysis, run.glyphs, run.clusters, run.visAttrs, buffer.ptr); |
| 29 | 2444 run.glyphCount = buffer[0]; |
| 2445 } | |
| 2446 } | |
| 2447 } | |
| 2448 } | |
| 30 | 2449 ABC abc; |
| 2450 run.advances = cast(int*)OS.HeapAlloc(hHeap, OS.HEAP_ZERO_MEMORY, run.glyphCount * 4); | |
| 2451 if (run.advances is null) DWT.error(DWT.ERROR_NO_HANDLES); | |
| 2452 run.goffsets = cast(GOFFSET*)OS.HeapAlloc(hHeap, OS.HEAP_ZERO_MEMORY, run.glyphCount * GOFFSET_SIZEOF); | |
| 2453 if (run.goffsets is null) DWT.error(DWT.ERROR_NO_HANDLES); | |
| 2454 OS.ScriptPlace(hdc, run.psc, run.glyphs, run.glyphCount, run.visAttrs, &run.analysis, run.advances, run.goffsets, &abc); | |
| 29 | 2455 if (run.style !is null && run.style.metrics !is null) { |
| 2456 GlyphMetrics metrics = run.style.metrics; | |
| 2457 /* | |
| 2458 * Bug in Windows, on a Japanese machine, Uniscribe returns glyphcount | |
| 2459 * equals zero for FFFC (possibly other unicode code points), the fix | |
| 2460 * is to make sure the glyph is at least one pixel wide. | |
| 2461 */ | |
| 2462 run.width = metrics.width * Math.max (1, run.glyphCount); | |
| 2463 run.ascent = metrics.ascent; | |
| 2464 run.descent = metrics.descent; | |
| 2465 run.leading = 0; | |
| 2466 } else { | |
| 30 | 2467 run.width = abc.abcA + abc.abcB + abc.abcC; |
| 29 | 2468 TEXTMETRIC lptm; |
| 2469 OS.GetTextMetrics(hdc, &lptm); | |
| 2470 run.ascent = lptm.tmAscent; | |
| 2471 run.descent = lptm.tmDescent; | |
| 2472 run.leading = lptm.tmInternalLeading; | |
| 2473 } | |
| 2474 if (run.style !is null) { | |
| 2475 run.ascent += run.style.rise; | |
| 2476 run.descent -= +run.style.rise; | |
| 2477 } | |
| 2478 } | |
| 2479 | |
| 2480 int validadeOffset(int offset, int step) { | |
| 2481 offset += step; | |
| 2482 if (segments !is null && segments.length > 2) { | |
| 2483 for (int i = 0; i < segments.length; i++) { | |
| 2484 if (translateOffset(segments[i]) - 1 is offset) { | |
| 2485 offset += step; | |
| 2486 break; | |
| 2487 } | |
| 2488 } | |
| 2489 } | |
| 2490 return offset; | |
| 2491 } | |
| 2492 | |
| 2493 /** | |
| 2494 * Returns a string containing a concise, human-readable | |
| 2495 * description of the receiver. | |
| 2496 * | |
| 2497 * @return a string representation of the receiver | |
| 2498 */ | |
|
48
9a64a7781bab
Added override and alias, first chunk. Thanks torhu for doing this patch.
Frank Benoit <benoit@tionex.de>
parents:
31
diff
changeset
|
2499 override public char[] toString () { |
| 29 | 2500 if (isDisposed()) return "TextLayout {*DISPOSED*}"; |
| 2501 return "TextLayout {}"; | |
| 2502 } | |
| 2503 | |
| 2504 int translateOffset(int offset) { | |
| 2505 if (segments is null) return offset; | |
| 2506 int nSegments = segments.length; | |
| 2507 if (nSegments <= 1) return offset; | |
| 30 | 2508 int length_ = text.length; |
| 2509 if (length_ is 0) return offset; | |
| 29 | 2510 if (nSegments is 2) { |
| 30 | 2511 if (segments[0] is 0 && segments[1] is length_) return offset; |
| 29 | 2512 } |
| 2513 for (int i = 0; i < nSegments && offset - i >= segments[i]; i++) { | |
| 2514 offset++; | |
| 2515 } | |
| 2516 return offset; | |
| 2517 } | |
| 2518 | |
| 2519 int untranslateOffset(int offset) { | |
| 2520 if (segments is null) return offset; | |
| 2521 int nSegments = segments.length; | |
| 2522 if (nSegments <= 1) return offset; | |
| 30 | 2523 int length_ = text.length; |
| 2524 if (length_ is 0) return offset; | |
| 29 | 2525 if (nSegments is 2) { |
| 30 | 2526 if (segments[0] is 0 && segments[1] is length_) return offset; |
| 29 | 2527 } |
| 2528 for (int i = 0; i < nSegments && offset > segments[i]; i++) { | |
| 2529 offset--; | |
| 2530 } | |
| 2531 return offset; | |
| 2532 } | |
| 2533 } |