2 * RichEdit - operations on runs (diRun, rectangular pieces of paragraphs).
3 * Splitting/joining runs. Adjusting offsets after deleting/adding content.
4 * Character/pixel conversions.
6 * Copyright 2004 by Krzysztof Foltman
7 * Copyright 2006 by Phil Krylov
9 * This library is free software; you can redistribute it and/or
10 * modify it under the terms of the GNU Lesser General Public
11 * License as published by the Free Software Foundation; either
12 * version 2.1 of the License, or (at your option) any later version.
14 * This library is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
17 * Lesser General Public License for more details.
19 * You should have received a copy of the GNU Lesser General Public
20 * License along with this library; if not, write to the Free Software
21 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
26 WINE_DEFAULT_DEBUG_CHANNEL(richedit);
27 WINE_DECLARE_DEBUG_CHANNEL(richedit_check);
28 WINE_DECLARE_DEBUG_CHANNEL(richedit_lists);
30 /******************************************************************************
33 * Returns 1 if two runs can be safely merged into one, 0 otherwise.
35 int ME_CanJoinRuns(const ME_Run *run1, const ME_Run *run2)
37 if ((run1->nFlags | run2->nFlags) & MERF_NOJOIN)
39 if (run1->style != run2->style)
41 if ((run1->nFlags & MERF_STYLEFLAGS) != (run2->nFlags & MERF_STYLEFLAGS))
46 void ME_SkipAndPropagateCharOffset(ME_DisplayItem *p, int shift)
48 p = ME_FindItemFwd(p, diRunOrParagraphOrEnd);
50 ME_PropagateCharOffset(p, shift);
53 /******************************************************************************
54 * ME_PropagateCharOffsets
56 * Shifts (increases or decreases) character offset (relative to beginning of
57 * the document) of the part of the text starting from given place.
59 void ME_PropagateCharOffset(ME_DisplayItem *p, int shift)
61 /* Runs in one paragraph contain character offset relative to their owning
62 * paragraph. If we start the shifting from the run, we need to shift
63 * all the relative offsets until the end of the paragraph
65 if (p->type == diRun) /* propagate in all runs in this para */
67 TRACE("PropagateCharOffset(%s, %d)\n", debugstr_w(p->member.run.strText->szData), shift);
69 p->member.run.nCharOfs += shift;
70 assert(p->member.run.nCharOfs >= 0);
71 p = ME_FindItemFwd(p, diRunOrParagraphOrEnd);
72 } while(p->type == diRun);
74 /* Runs in next paragraphs don't need their offsets updated, because they,
75 * again, those offsets are relative to their respective paragraphs.
76 * Instead of that, we're updating paragraphs' character offsets.
78 if (p->type == diParagraph) /* propagate in all next paras */
81 p->member.para.nCharOfs += shift;
82 assert(p->member.para.nCharOfs >= 0);
83 p = p->member.para.next_para;
84 } while(p->type == diParagraph);
86 /* diTextEnd also has character offset in it, which makes finding text length
87 * easier. But it needs to be up to date first.
89 if (p->type == diTextEnd)
91 p->member.para.nCharOfs += shift;
92 assert(p->member.para.nCharOfs >= 0);
96 /******************************************************************************
99 * Checks if editor lists' validity and optionally dumps the document structure
101 void ME_CheckCharOffsets(ME_TextEditor *editor)
103 ME_DisplayItem *p = editor->pBuffer->pFirst;
104 int ofs = 0, ofsp = 0;
105 if(TRACE_ON(richedit_lists))
107 TRACE_(richedit_lists)("---\n");
108 ME_DumpDocument(editor->pBuffer);
111 p = ME_FindItemFwd(p, diRunOrParagraphOrEnd);
114 TRACE_(richedit_check)("tend, real ofsp = %d, counted = %d\n", p->member.para.nCharOfs, ofsp+ofs);
115 assert(ofsp+ofs == p->member.para.nCharOfs);
118 TRACE_(richedit_check)("para, real ofsp = %d, counted = %d\n", p->member.para.nCharOfs, ofsp+ofs);
119 assert(ofsp+ofs == p->member.para.nCharOfs);
120 ofsp = p->member.para.nCharOfs;
124 TRACE_(richedit_check)("run, real ofs = %d (+ofsp = %d), counted = %d, len = %d, txt = \"%s\", flags=%08x, fx&mask = %08x\n",
125 p->member.run.nCharOfs, p->member.run.nCharOfs+ofsp, ofsp+ofs,
126 p->member.run.strText->nLen, debugstr_w(p->member.run.strText->szData),
127 p->member.run.nFlags,
128 p->member.run.style->fmt.dwMask & p->member.run.style->fmt.dwEffects);
129 assert(ofs == p->member.run.nCharOfs);
130 assert(p->member.run.strText->nLen);
131 ofs += p->member.run.strText->nLen;
134 TRACE_(richedit_check)("cell\n");
142 /******************************************************************************
143 * ME_CharOfsFromRunOfs
145 * Converts a character position relative to the start of the run, to a
146 * character position relative to the start of the document.
147 * Kind of a "local to global" offset conversion.
149 int ME_CharOfsFromRunOfs(ME_TextEditor *editor, ME_DisplayItem *pRun, int nOfs)
151 ME_DisplayItem *pPara;
153 assert(pRun->type == diRun);
154 assert(pRun->member.run.nCharOfs != -1);
156 pPara = ME_FindItemBack(pRun, diParagraph);
158 assert(pPara->type==diParagraph);
159 return pPara->member.para.nCharOfs + pRun->member.run.nCharOfs
160 + ME_VPosToPos(pRun->member.run.strText, nOfs);
163 /******************************************************************************
164 * ME_CursorFromCharOfs
166 * Converts a character offset (relative to the start of the document) to
167 * a cursor structure (which contains a run and a position relative to that
170 void ME_CursorFromCharOfs(ME_TextEditor *editor, int nCharOfs, ME_Cursor *pCursor)
172 ME_RunOfsFromCharOfs(editor, nCharOfs, &pCursor->pRun, &pCursor->nOffset);
175 /******************************************************************************
176 * ME_RunOfsFromCharOfs
178 * Find a run and relative character offset given an absolute character offset
179 * (absolute offset being an offset relative to the start of the document).
180 * Kind of a "global to local" offset conversion.
182 void ME_RunOfsFromCharOfs(ME_TextEditor *editor, int nCharOfs, ME_DisplayItem **ppRun, int *pOfs)
184 ME_DisplayItem *item, *next_item;
189 nCharOfs = max(nCharOfs, 0);
190 nCharOfs = min(nCharOfs, ME_GetTextLength(editor));
192 /* Find the paragraph at the offset. */
193 next_item = editor->pBuffer->pFirst->member.para.next_para;
196 next_item = item->member.para.next_para;
197 } while (next_item->member.para.nCharOfs <= nCharOfs);
198 assert(item->type == diParagraph);
199 nCharOfs -= item->member.para.nCharOfs;
201 /* Find the run at the offset. */
202 next_item = ME_FindItemFwd(item, diRun);
205 next_item = ME_FindItemFwd(item, diRunOrParagraphOrEnd);
206 } while (next_item->type == diRun &&
207 next_item->member.run.nCharOfs <= nCharOfs);
208 assert(item->type == diRun);
209 nCharOfs -= item->member.run.nCharOfs;
215 /******************************************************************************
218 * Merges two adjacent runs, the one given as a parameter and the next one.
220 void ME_JoinRuns(ME_TextEditor *editor, ME_DisplayItem *p)
222 ME_DisplayItem *pNext = p->next;
224 assert(p->type == diRun && pNext->type == diRun);
225 assert(p->member.run.nCharOfs != -1);
226 ME_GetParagraph(p)->member.para.nFlags |= MEPF_REWRAP;
228 /* Update all cursors so that they don't contain the soon deleted run */
229 for (i=0; i<editor->nCursors; i++) {
230 if (editor->pCursors[i].pRun == pNext) {
231 editor->pCursors[i].pRun = p;
232 editor->pCursors[i].nOffset += ME_StrVLen(p->member.run.strText);
236 ME_AppendString(p->member.run.strText, pNext->member.run.strText);
238 ME_DestroyDisplayItem(pNext);
239 ME_UpdateRunFlags(editor, &p->member.run);
240 if(TRACE_ON(richedit))
242 TRACE("Before check after join\n");
243 ME_CheckCharOffsets(editor);
244 TRACE("After check after join\n");
248 /******************************************************************************
251 * Splits a run into two in a given place. It also updates the screen position
252 * and size (extent) of the newly generated runs.
254 ME_DisplayItem *ME_SplitRun(ME_WrapContext *wc, ME_DisplayItem *item, int nVChar)
256 ME_TextEditor *editor = wc->context->editor;
257 ME_DisplayItem *item2 = NULL;
259 ME_Paragraph *para = &ME_GetParagraph(item)->member.para;
261 assert(item->member.run.nCharOfs != -1);
262 if(TRACE_ON(richedit))
264 TRACE("Before check before split\n");
265 ME_CheckCharOffsets(editor);
266 TRACE("After check before split\n");
269 run = &item->member.run;
271 TRACE("Before split: %s(%d, %d)\n", debugstr_w(run->strText->szData),
272 run->pt.x, run->pt.y);
274 item2 = ME_SplitRunSimple(editor, item, nVChar);
276 run2 = &item2->member.run;
278 ME_CalcRunExtent(wc->context, para, wc->nRow ? wc->nLeftMargin : wc->nFirstMargin, run);
279 ME_CalcRunExtent(wc->context, para, wc->nRow ? wc->nLeftMargin : wc->nFirstMargin, run2);
281 run2->pt.x = run->pt.x+run->nWidth;
282 run2->pt.y = run->pt.y;
284 if(TRACE_ON(richedit))
286 TRACE("Before check after split\n");
287 ME_CheckCharOffsets(editor);
288 TRACE("After check after split\n");
289 TRACE("After split: %s(%d, %d), %s(%d, %d)\n",
290 debugstr_w(run->strText->szData), run->pt.x, run->pt.y,
291 debugstr_w(run2->strText->szData), run2->pt.x, run2->pt.y);
297 /******************************************************************************
300 * Does the most basic job of splitting a run into two - it does not
301 * update the positions and extents.
303 ME_DisplayItem *ME_SplitRunSimple(ME_TextEditor *editor, ME_DisplayItem *item, int nVChar)
305 ME_Run *run = &item->member.run;
306 ME_DisplayItem *item2;
309 assert(nVChar > 0 && nVChar < ME_StrVLen(run->strText));
310 assert(item->type == diRun);
311 assert(!(item->member.run.nFlags & MERF_NONTEXT));
312 assert(item->member.run.nCharOfs != -1);
314 item2 = ME_MakeRun(run->style,
315 ME_VSplitString(run->strText, nVChar), run->nFlags&MERF_SPLITMASK);
317 item2->member.run.nCharOfs = item->member.run.nCharOfs+
318 ME_VPosToPos(item->member.run.strText, nVChar);
320 run2 = &item2->member.run;
321 ME_InsertBefore(item->next, item2);
323 ME_UpdateRunFlags(editor, run);
324 ME_UpdateRunFlags(editor, run2);
325 for (i=0; i<editor->nCursors; i++) {
326 if (editor->pCursors[i].pRun == item &&
327 editor->pCursors[i].nOffset >= nVChar) {
328 assert(item2->type == diRun);
329 editor->pCursors[i].pRun = item2;
330 editor->pCursors[i].nOffset -= nVChar;
333 ME_GetParagraph(item)->member.para.nFlags |= MEPF_REWRAP;
337 /******************************************************************************
340 * A helper function to create run structures quickly.
342 ME_DisplayItem *ME_MakeRun(ME_Style *s, ME_String *strData, int nFlags)
344 ME_DisplayItem *item = ME_MakeDI(diRun);
345 item->member.run.style = s;
346 item->member.run.ole_obj = NULL;
347 item->member.run.strText = strData;
348 item->member.run.nFlags = nFlags;
349 item->member.run.nCharOfs = -1;
354 /******************************************************************************
357 * Inserts a run at a given character position (offset).
359 ME_DisplayItem *ME_InsertRun(ME_TextEditor *editor, int nCharOfs, ME_DisplayItem *pItem)
364 assert(pItem->type == diRun || pItem->type == diUndoInsertRun);
366 ME_CursorFromCharOfs(editor, nCharOfs, &tmp);
367 pDI = ME_InsertRunAtCursor(editor, &tmp, pItem->member.run.style,
368 pItem->member.run.strText->szData,
369 pItem->member.run.strText->nLen,
370 pItem->member.run.nFlags);
375 /******************************************************************************
376 * ME_InsertRunAtCursor
378 * Inserts a new run with given style, flags and content at a given position,
379 * which is passed as a cursor structure (which consists of a run and
380 * a run-relative character offset).
383 ME_InsertRunAtCursor(ME_TextEditor *editor, ME_Cursor *cursor, ME_Style *style,
384 const WCHAR *str, int len, int flags)
389 if (cursor->nOffset) {
390 /* We're inserting at the middle of the existing run, which means that
391 * that run must be split. It isn't always necessary, but */
392 cursor->pRun = ME_SplitRunSimple(editor, cursor->pRun, cursor->nOffset);
396 pUI = ME_AddUndoItem(editor, diUndoDeleteRun, NULL);
398 pUI->nStart = (ME_GetParagraph(cursor->pRun)->member.para.nCharOfs
399 + cursor->pRun->member.run.nCharOfs);
403 pDI = ME_MakeRun(style, ME_MakeStringN(str, len), flags);
404 pDI->member.run.nCharOfs = cursor->pRun->member.run.nCharOfs;
405 ME_InsertBefore(cursor->pRun, pDI);
406 TRACE("Shift length:%d\n", len);
407 ME_PropagateCharOffset(cursor->pRun, len);
408 ME_GetParagraph(cursor->pRun)->member.para.nFlags |= MEPF_REWRAP;
412 /******************************************************************************
415 * Determine some of run attributes given its content (style, text content).
416 * Some flags cannot be determined by this function (MERF_GRAPHICS,
419 void ME_UpdateRunFlags(ME_TextEditor *editor, ME_Run *run)
421 assert(run->nCharOfs != -1);
423 if (RUN_IS_HIDDEN(run) || run->nFlags & MERF_TABLESTART)
424 run->nFlags |= MERF_HIDDEN;
426 run->nFlags &= ~MERF_HIDDEN;
428 if (ME_IsSplitable(run->strText))
429 run->nFlags |= MERF_SPLITTABLE;
431 run->nFlags &= ~MERF_SPLITTABLE;
433 if (!(run->nFlags & MERF_NOTEXT)) {
434 if (ME_IsWhitespaces(run->strText))
435 run->nFlags |= MERF_WHITESPACE | MERF_STARTWHITE | MERF_ENDWHITE;
438 run->nFlags &= ~MERF_WHITESPACE;
440 if (ME_IsWSpace(ME_GetCharFwd(run->strText,0)))
441 run->nFlags |= MERF_STARTWHITE;
443 run->nFlags &= ~MERF_STARTWHITE;
445 if (ME_IsWSpace(ME_GetCharBack(run->strText,0)))
446 run->nFlags |= MERF_ENDWHITE;
448 run->nFlags &= ~MERF_ENDWHITE;
452 run->nFlags &= ~(MERF_WHITESPACE | MERF_STARTWHITE | MERF_ENDWHITE);
455 /******************************************************************************
458 * Returns a character position inside the run given a run-relative
459 * pixel horizontal position. This version rounds left (ie. if the second
460 * character is at pixel position 8, then for cx=0..7 it returns 0).
462 int ME_CharFromPoint(ME_Context *c, int cx, ME_Run *run)
467 if (!run->strText->nLen)
470 if (run->nFlags & MERF_TAB ||
471 (run->nFlags & (MERF_ENDCELL|MERF_ENDPARA)) == MERF_ENDCELL)
473 if (cx < run->nWidth/2)
477 if (run->nFlags & MERF_GRAPHICS)
480 ME_GetOLEObjectSize(c, run, &sz);
485 hOldFont = ME_SelectStyleFont(c, run->style);
487 if (c->editor->cPasswordMask)
489 ME_String *strMasked = ME_MakeStringR(c->editor->cPasswordMask,ME_StrVLen(run->strText));
490 GetTextExtentExPointW(c->hDC, strMasked->szData, run->strText->nLen,
491 cx, &fit, NULL, &sz);
492 ME_DestroyString(strMasked);
496 GetTextExtentExPointW(c->hDC, run->strText->szData, run->strText->nLen,
497 cx, &fit, NULL, &sz);
500 ME_UnselectStyleFont(c, run->style, hOldFont);
505 /******************************************************************************
506 * ME_CharFromPointCursor
508 * Returns a character position inside the run given a run-relative
509 * pixel horizontal position. This version rounds to the nearest character edge
510 * (ie. if the second character is at pixel position 8, then for cx=0..3
511 * it returns 0, and for cx=4..7 it returns 1).
513 * It is used for mouse click handling, for better usability (and compatibility
514 * with the native control).
516 int ME_CharFromPointCursor(ME_TextEditor *editor, int cx, ME_Run *run)
518 ME_String *strRunText;
519 /* This could point to either the run's real text, or it's masked form in a password control */
521 int fit = 0, fit1 = 0;
525 if (!run->strText->nLen)
528 if (run->nFlags & (MERF_TAB | MERF_ENDCELL))
530 if (cx < run->nWidth/2)
534 ME_InitContext(&c, editor, ITextHost_TxGetDC(editor->texthost));
535 if (run->nFlags & MERF_GRAPHICS)
538 ME_GetOLEObjectSize(&c, run, &sz);
539 ME_DestroyContext(&c);
545 if (editor->cPasswordMask)
546 strRunText = ME_MakeStringR(editor->cPasswordMask,ME_StrVLen(run->strText));
548 strRunText = run->strText;
550 hOldFont = ME_SelectStyleFont(&c, run->style);
551 GetTextExtentExPointW(c.hDC, strRunText->szData, strRunText->nLen,
552 cx, &fit, NULL, &sz);
553 if (fit != strRunText->nLen)
557 GetTextExtentPoint32W(c.hDC, strRunText->szData, fit, &sz2);
558 fit1 = ME_StrRelPos(strRunText, fit, &chars);
559 GetTextExtentPoint32W(c.hDC, strRunText->szData, fit1, &sz3);
560 if (cx >= (sz2.cx+sz3.cx)/2)
564 if (editor->cPasswordMask)
565 ME_DestroyString(strRunText);
567 ME_UnselectStyleFont(&c, run->style, hOldFont);
568 ME_DestroyContext(&c);
572 /******************************************************************************
575 * Finds a width and a height of the text using a specified style
577 static void ME_GetTextExtent(ME_Context *c, LPCWSTR szText, int nChars, ME_Style *s, SIZE *size)
580 hOldFont = ME_SelectStyleFont(c, s);
581 GetTextExtentPoint32W(c->hDC, szText, nChars, size);
582 ME_UnselectStyleFont(c, s, hOldFont);
585 /******************************************************************************
588 * Returns a run-relative pixel position given a run-relative character
589 * position (character offset)
591 int ME_PointFromChar(ME_TextEditor *editor, ME_Run *pRun, int nOffset)
595 ME_String *strRunText;
596 /* This could point to either the run's real text, or it's masked form in a password control */
598 ME_InitContext(&c, editor, ITextHost_TxGetDC(editor->texthost));
599 if (pRun->nFlags & MERF_GRAPHICS)
602 ME_GetOLEObjectSize(&c, pRun, &size);
603 ITextHost_TxReleaseDC(editor->texthost, c.hDC);
605 } else if (pRun->nFlags & MERF_ENDPARA) {
609 if (editor->cPasswordMask)
610 strRunText = ME_MakeStringR(editor->cPasswordMask,ME_StrVLen(pRun->strText));
612 strRunText = pRun->strText;
614 ME_GetTextExtent(&c, strRunText->szData, nOffset, pRun->style, &size);
615 ITextHost_TxReleaseDC(editor->texthost, c.hDC);
616 if (editor->cPasswordMask)
617 ME_DestroyString(strRunText);
621 /******************************************************************************
622 * ME_GetRunSizeCommon
624 * Finds width, height, ascent and descent of a run, up to given character
627 static SIZE ME_GetRunSizeCommon(ME_Context *c, const ME_Paragraph *para, ME_Run *run, int nLen,
628 int startx, int *pAscent, int *pDescent)
631 int nMaxLen = ME_StrVLen(run->strText);
636 /* FIXME the following call also ensures that TEXTMETRIC structure is filled
637 * this is wasteful for MERF_NONTEXT runs, but that shouldn't matter
641 if (c->editor->cPasswordMask)
643 ME_String *szMasked = ME_MakeStringR(c->editor->cPasswordMask,nLen);
644 ME_GetTextExtent(c, szMasked->szData, nLen,run->style, &size);
645 ME_DestroyString(szMasked);
649 ME_GetTextExtent(c, run->strText->szData, nLen, run->style, &size);
651 *pAscent = run->style->tm.tmAscent;
652 *pDescent = run->style->tm.tmDescent;
653 size.cy = *pAscent + *pDescent;
655 if (run->nFlags & MERF_TAB)
657 int pos = 0, i = 0, ppos, shift = 0;
658 PARAFORMAT2 *pFmt = para->pFmt;
660 if (c->editor->bEmulateVersion10 && /* v1.0 - 3.0 */
661 pFmt->dwMask & PFM_TABLE && pFmt->wEffects & PFE_TABLE)
662 /* The horizontal gap shifts the tab positions to leave the gap. */
663 shift = pFmt->dxOffset * 2;
665 if (i < pFmt->cTabCount)
667 /* Only one side of the horizontal gap is needed at the end of
669 if (i == pFmt->cTabCount -1)
671 pos = shift + (pFmt->rgxTabs[i]&0x00FFFFFF);
676 pos += lDefaultTab - (pos % lDefaultTab);
678 ppos = ME_twips2pointsX(c, pos);
679 if (ppos > startx + run->pt.x) {
680 size.cx = ppos - startx - run->pt.x;
684 size.cy = *pAscent + *pDescent;
687 if (run->nFlags & MERF_GRAPHICS)
689 ME_GetOLEObjectSize(c, run, &size);
690 if (size.cy > *pAscent)
692 /* descent is unchanged */
698 /******************************************************************************
701 * Finds width and height (but not ascent and descent) of a part of the run
702 * up to given character.
704 SIZE ME_GetRunSize(ME_Context *c, const ME_Paragraph *para,
705 ME_Run *run, int nLen, int startx)
708 return ME_GetRunSizeCommon(c, para, run, nLen, startx, &asc, &desc);
711 /******************************************************************************
714 * Updates the size of the run (fills width, ascent and descent). The height
715 * is calculated based on whole row's ascent and descent anyway, so no need
718 void ME_CalcRunExtent(ME_Context *c, const ME_Paragraph *para, int startx, ME_Run *run)
720 if (run->nFlags & MERF_HIDDEN)
724 int nEnd = ME_StrVLen(run->strText);
725 SIZE size = ME_GetRunSizeCommon(c, para, run, nEnd, startx,
726 &run->nAscent, &run->nDescent);
727 run->nWidth = size.cx;
729 WARN("size.cx == 0\n");
733 /******************************************************************************
736 * This should ensure that the given paragraph is wrapped so that its screen
737 * row structure may be used. But it doesn't, yet.
739 void ME_MustBeWrapped(ME_Context *c, ME_DisplayItem *para)
741 assert(para->type == diParagraph);
745 /******************************************************************************
746 * ME_SetSelectionCharFormat
748 * Applies a style change, either to a current selection, or to insert cursor
749 * (ie. the style next typed characters will use).
751 void ME_SetSelectionCharFormat(ME_TextEditor *editor, CHARFORMAT2W *pFmt)
754 ME_GetSelection(editor, &nFrom, &nTo);
758 if (!editor->pBuffer->pCharStyle)
759 editor->pBuffer->pCharStyle = ME_GetInsertStyle(editor, 0);
760 s = ME_ApplyStyle(editor->pBuffer->pCharStyle, pFmt);
761 ME_ReleaseStyle(editor->pBuffer->pCharStyle);
762 editor->pBuffer->pCharStyle = s;
765 ME_SetCharFormat(editor, nFrom, nTo-nFrom, pFmt);
768 /******************************************************************************
771 * Applies a style change to the specified part of the text
773 void ME_SetCharFormat(ME_TextEditor *editor, int nOfs, int nChars, CHARFORMAT2W *pFmt)
776 ME_DisplayItem *para;
778 ME_CursorFromCharOfs(editor, nOfs, &tmp);
780 tmp.pRun = ME_SplitRunSimple(editor, tmp.pRun, tmp.nOffset);
782 ME_CursorFromCharOfs(editor, nOfs+nChars, &tmp2);
784 tmp2.pRun = ME_SplitRunSimple(editor, tmp2.pRun, tmp2.nOffset);
786 para = ME_GetParagraph(tmp.pRun);
787 para->member.para.nFlags |= MEPF_REWRAP;
789 while(tmp.pRun != tmp2.pRun)
791 ME_UndoItem *undo = NULL;
792 ME_Style *new_style = ME_ApplyStyle(tmp.pRun->member.run.style, pFmt);
793 /* ME_DumpStyle(new_style); */
794 undo = ME_AddUndoItem(editor, diUndoSetCharFormat, NULL);
796 undo->nStart = tmp.pRun->member.run.nCharOfs+para->member.para.nCharOfs;
797 undo->nLen = tmp.pRun->member.run.strText->nLen;
798 undo->di.member.ustyle = tmp.pRun->member.run.style;
799 /* we'd have to addref undo...ustyle and release tmp...style
800 but they'd cancel each other out so we can do nothing instead */
803 ME_ReleaseStyle(tmp.pRun->member.run.style);
804 tmp.pRun->member.run.style = new_style;
805 tmp.pRun = ME_FindItemFwd(tmp.pRun, diRunOrParagraph);
806 if (tmp.pRun->type == diParagraph)
809 tmp.pRun = ME_FindItemFwd(tmp.pRun, diRun);
810 if (tmp.pRun != tmp2.pRun)
811 para->member.para.nFlags |= MEPF_REWRAP;
817 /******************************************************************************
818 * ME_SetDefaultCharFormat
820 * Applies a style change to the default character style.
822 void ME_SetDefaultCharFormat(ME_TextEditor *editor, CHARFORMAT2W *mod)
826 assert(mod->cbSize == sizeof(CHARFORMAT2W));
827 style = ME_ApplyStyle(editor->pBuffer->pDefaultStyle, mod);
828 editor->pBuffer->pDefaultStyle->fmt = style->fmt;
829 editor->pBuffer->pDefaultStyle->tm = style->tm;
830 ME_ReleaseStyle(style);
831 ME_MarkAllForWrapping(editor);
832 /* pcf = editor->pBuffer->pDefaultStyle->fmt; */
835 static void ME_GetRunCharFormat(ME_TextEditor *editor, ME_DisplayItem *run, CHARFORMAT2W *pFmt)
837 ME_CopyCharFormat(pFmt, &run->member.run.style->fmt);
838 if ((pFmt->dwMask & CFM_UNDERLINETYPE) && (pFmt->bUnderlineType == CFU_CF1UNDERLINE))
840 pFmt->dwMask |= CFM_UNDERLINE;
841 pFmt->dwEffects |= CFE_UNDERLINE;
843 if ((pFmt->dwMask & CFM_UNDERLINETYPE) && (pFmt->bUnderlineType == CFU_UNDERLINENONE))
845 pFmt->dwMask |= CFM_UNDERLINE;
846 pFmt->dwEffects &= ~CFE_UNDERLINE;
850 /******************************************************************************
851 * ME_GetDefaultCharFormat
853 * Retrieves the current default character style (the one applied where no
854 * other style was applied) .
856 void ME_GetDefaultCharFormat(ME_TextEditor *editor, CHARFORMAT2W *pFmt)
858 ME_CopyCharFormat(pFmt, &editor->pBuffer->pDefaultStyle->fmt);
861 /******************************************************************************
862 * ME_GetSelectionCharFormat
864 * If selection exists, it returns all style elements that are set consistently
865 * in the whole selection. If not, it just returns the current style.
867 void ME_GetSelectionCharFormat(ME_TextEditor *editor, CHARFORMAT2W *pFmt)
870 ME_GetSelection(editor, &nFrom, &nTo);
871 if (nFrom == nTo && editor->pBuffer->pCharStyle)
873 ME_CopyCharFormat(pFmt, &editor->pBuffer->pCharStyle->fmt);
876 ME_GetCharFormat(editor, nFrom, nTo, pFmt);
879 /******************************************************************************
882 * Returns the style consisting of those attributes which are consistently set
883 * in the whole character range.
885 void ME_GetCharFormat(ME_TextEditor *editor, int nFrom, int nTo, CHARFORMAT2W *pFmt)
887 ME_DisplayItem *run, *run_end;
888 int nOffset, nOffset2;
891 ME_RunOfsFromCharOfs(editor, nFrom, &run, &nOffset);
892 if (nFrom == nTo) /* special case - if selection is empty, take previous char's formatting */
896 ME_DisplayItem *tmp_run = ME_FindItemBack(run, diRunOrParagraph);
897 if (tmp_run->type == diRun) {
898 ME_GetRunCharFormat(editor, tmp_run, pFmt);
902 ME_GetRunCharFormat(editor, run, pFmt);
906 if (nTo>nFrom) /* selection consists of chars from nFrom up to nTo-1 */
908 ME_RunOfsFromCharOfs(editor, nTo, &run_end, &nOffset2);
910 ME_GetRunCharFormat(editor, run, pFmt);
912 if (run == run_end) return;
915 /* FIXME add more style feature comparisons */
916 int nAttribs = CFM_SIZE | CFM_FACE | CFM_COLOR | CFM_UNDERLINETYPE;
917 int nEffects = CFM_BOLD | CFM_ITALIC | CFM_UNDERLINE | CFM_STRIKEOUT | CFM_PROTECTED | CFM_LINK | CFM_SUPERSCRIPT;
919 run = ME_FindItemFwd(run, diRun);
921 ZeroMemory(&tmp, sizeof(tmp));
922 tmp.cbSize = sizeof(tmp);
923 ME_GetRunCharFormat(editor, run, &tmp);
925 assert((tmp.dwMask & nAttribs) == nAttribs);
926 /* reset flags that differ */
928 if (pFmt->yHeight != tmp.yHeight)
929 pFmt->dwMask &= ~CFM_SIZE;
930 if (pFmt->dwMask & CFM_FACE)
932 if (!(tmp.dwMask & CFM_FACE))
933 pFmt->dwMask &= ~CFM_FACE;
934 else if (lstrcmpW(pFmt->szFaceName, tmp.szFaceName) ||
935 pFmt->bPitchAndFamily != tmp.bPitchAndFamily)
936 pFmt->dwMask &= ~CFM_FACE;
938 if (pFmt->yHeight != tmp.yHeight)
939 pFmt->dwMask &= ~CFM_SIZE;
940 if (pFmt->bUnderlineType != tmp.bUnderlineType)
941 pFmt->dwMask &= ~CFM_UNDERLINETYPE;
942 if (pFmt->dwMask & CFM_COLOR)
944 if (!((pFmt->dwEffects&CFE_AUTOCOLOR) & (tmp.dwEffects&CFE_AUTOCOLOR)))
946 if (pFmt->crTextColor != tmp.crTextColor)
947 pFmt->dwMask &= ~CFM_COLOR;
951 pFmt->dwMask &= ~((pFmt->dwEffects ^ tmp.dwEffects) & nEffects);
952 pFmt->dwEffects = tmp.dwEffects;
954 } while(run != run_end);