2 * RichEdit - Caret and selection functions.
4 * Copyright 2004 by Krzysztof Foltman
5 * Copyright 2005 by Phil Krylov
7 * This library is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU Lesser General Public
9 * License as published by the Free Software Foundation; either
10 * version 2.1 of the License, or (at your option) any later version.
12 * This library is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * Lesser General Public License for more details.
17 * You should have received a copy of the GNU Lesser General Public
18 * License along with this library; if not, write to the Free Software
19 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
25 WINE_DEFAULT_DEBUG_CHANNEL(richedit);
28 ME_MoveCursorChars(ME_TextEditor *editor, ME_Cursor *pCursor, int nRelOfs);
30 int ME_GetSelectionOfs(ME_TextEditor *editor, int *from, int *to)
32 *from = ME_GetCursorOfs(&editor->pCursors[0]);
33 *to = ME_GetCursorOfs(&editor->pCursors[1]);
45 int ME_GetSelection(ME_TextEditor *editor, ME_Cursor **from, ME_Cursor **to)
47 if (ME_GetCursorOfs(&editor->pCursors[0]) < ME_GetCursorOfs(&editor->pCursors[1]))
49 *from = &editor->pCursors[0];
50 *to = &editor->pCursors[1];
53 *from = &editor->pCursors[1];
54 *to = &editor->pCursors[0];
59 int ME_GetTextLength(ME_TextEditor *editor)
61 ME_DisplayItem *pLast = editor->pBuffer->pLast;
62 return ME_CharOfsFromRunOfs(editor, pLast->member.para.prev_para,
63 ME_FindItemBack(pLast, diRun), 0);
67 int ME_GetTextLengthEx(ME_TextEditor *editor, const GETTEXTLENGTHEX *how)
71 if (how->flags & GTL_PRECISE && how->flags & GTL_CLOSE)
73 if (how->flags & GTL_NUMCHARS && how->flags & GTL_NUMBYTES)
76 length = ME_GetTextLength(editor);
78 if ((editor->styleFlags & ES_MULTILINE)
79 && (how->flags & GTL_USECRLF)
80 && !editor->bEmulateVersion10) /* Ignore GTL_USECRLF flag in 1.0 emulation */
81 length += editor->nParagraphs - 1;
83 if (how->flags & GTL_NUMBYTES)
87 if (how->codepage == 1200)
89 if (how->flags & GTL_PRECISE)
90 FIXME("GTL_PRECISE flag unsupported. Using GTL_CLOSE\n");
91 if (GetCPInfo(how->codepage, &cpinfo))
92 return length * cpinfo.MaxCharSize;
93 ERR("Invalid codepage %u\n", how->codepage);
100 int ME_SetSelection(ME_TextEditor *editor, int from, int to)
102 int selectionEnd = 0;
103 const int len = ME_GetTextLength(editor);
105 /* all negative values are effectively the same */
112 if (from == 0 && to == -1)
114 editor->pCursors[1].pPara = editor->pBuffer->pFirst->member.para.next_para;
115 editor->pCursors[1].pRun = ME_FindItemFwd(editor->pCursors[1].pPara, diRun);
116 editor->pCursors[1].nOffset = 0;
117 editor->pCursors[0].pPara = editor->pBuffer->pLast->member.para.prev_para;
118 editor->pCursors[0].pRun = ME_FindItemBack(editor->pBuffer->pLast, diRun);
119 editor->pCursors[0].nOffset = 0;
120 ME_InvalidateSelection(editor);
121 ME_ClearTempStyle(editor);
125 /* if both values are equal and also out of bound, that means to */
126 /* put the selection at the end of the text */
127 if ((from == to) && (to < 0 || to > len))
133 /* if from is negative and to is positive then selection is */
134 /* deselected and caret moved to end of the current selection */
138 ME_GetSelectionOfs(editor, &start, &end);
139 editor->pCursors[1] = editor->pCursors[0];
141 ME_ClearTempStyle(editor);
145 /* adjust to if it's a negative value */
149 /* flip from and to if they are reversed */
157 /* after fiddling with the values, we find from > len && to > len */
160 /* special case with to too big */
167 editor->pCursors[0].pPara = editor->pBuffer->pLast->member.para.prev_para;
168 editor->pCursors[0].pRun = ME_FindItemBack(editor->pBuffer->pLast, diRun);
169 editor->pCursors[0].nOffset = 0;
170 editor->pCursors[1] = editor->pCursors[0];
171 ME_InvalidateSelection(editor);
172 ME_ClearTempStyle(editor);
176 ME_CursorFromCharOfs(editor, from, &editor->pCursors[1]);
177 ME_CursorFromCharOfs(editor, to, &editor->pCursors[0]);
178 /* Selection is not allowed in the middle of an end paragraph run. */
179 if (editor->pCursors[1].pRun->member.run.nFlags & MERF_ENDPARA)
180 editor->pCursors[1].nOffset = 0;
181 if (editor->pCursors[0].pRun->member.run.nFlags & MERF_ENDPARA)
182 editor->pCursors[0].nOffset = 0;
188 ME_GetCursorCoordinates(ME_TextEditor *editor, ME_Cursor *pCursor,
189 int *x, int *y, int *height)
192 ME_DisplayItem *run = pCursor->pRun;
193 ME_DisplayItem *para = pCursor->pPara;
194 ME_DisplayItem *pSizeRun = run;
198 assert(height && x && y);
199 assert(~para->member.para.nFlags & MEPF_REWRAP);
200 assert(run && run->type == diRun);
201 assert(para && para->type == diParagraph);
203 row = ME_FindItemBack(run, diStartRowOrParagraph);
204 assert(row && row->type == diStartRow);
206 ME_InitContext(&c, editor, ITextHost_TxGetDC(editor->texthost));
208 if (!pCursor->nOffset)
210 ME_DisplayItem *prev = ME_FindItemBack(run, diRunOrParagraph);
212 if (prev->type == diRun)
215 if (editor->bCaretAtEnd && !pCursor->nOffset &&
216 run == ME_FindItemFwd(row, diRun))
218 ME_DisplayItem *tmp = ME_FindItemBack(row, diRunOrParagraph);
220 if (tmp->type == diRun)
222 row = ME_FindItemBack(tmp, diStartRow);
223 pSizeRun = run = tmp;
225 assert(run->type == diRun);
226 sz = ME_GetRunSize(&c, ¶->member.para,
227 &run->member.run, run->member.run.strText->nLen,
228 row->member.row.nLMargin);
231 if (pCursor->nOffset) {
232 sz = ME_GetRunSize(&c, ¶->member.para, &run->member.run,
233 pCursor->nOffset, row->member.row.nLMargin);
236 *height = pSizeRun->member.run.nAscent + pSizeRun->member.run.nDescent;
237 *x = c.rcView.left + run->member.run.pt.x + sz.cx - editor->horz_si.nPos;
238 *y = c.rcView.top + para->member.para.pt.y + row->member.row.nBaseline
239 + run->member.run.pt.y - pSizeRun->member.run.nAscent
240 - editor->vert_si.nPos;
241 ME_DestroyContext(&c);
247 ME_MoveCaret(ME_TextEditor *editor)
251 ME_GetCursorCoordinates(editor, &editor->pCursors[0], &x, &y, &height);
252 if(editor->bHaveFocus && !ME_IsSelection(editor))
254 x = min(x, editor->rcFormat.right-1);
255 ITextHost_TxCreateCaret(editor->texthost, NULL, 0, height);
256 ITextHost_TxSetCaretPos(editor->texthost, x, y);
261 void ME_ShowCaret(ME_TextEditor *ed)
264 if(ed->bHaveFocus && !ME_IsSelection(ed))
265 ITextHost_TxShowCaret(ed->texthost, TRUE);
268 void ME_HideCaret(ME_TextEditor *ed)
270 if(!ed->bHaveFocus || ME_IsSelection(ed))
272 ITextHost_TxShowCaret(ed->texthost, FALSE);
277 BOOL ME_InternalDeleteText(ME_TextEditor *editor, int nOfs, int nChars,
282 int totalChars = nChars;
283 ME_DisplayItem *start_para;
285 /* Prevent deletion past last end of paragraph run. */
286 nChars = min(nChars, ME_GetTextLength(editor) - nOfs);
288 ME_CursorFromCharOfs(editor, nOfs, &c);
289 start_para = c.pPara;
293 ME_ProtectPartialTableDeletion(editor, nOfs, &nChars);
301 ME_CursorFromCharOfs(editor, nOfs+nChars, &c);
303 nOfs+nChars == (c.pRun->member.run.nCharOfs
304 + c.pPara->member.para.nCharOfs))
306 /* We aren't deleting anything in this run, so we will go back to the
307 * last run we are deleting text in. */
308 c.pRun = ME_FindItemBack(c.pRun, diRun);
309 c.pPara = ME_GetParagraph(c.pRun);
310 c.nOffset = c.pRun->member.run.strText->nLen;
312 run = &c.pRun->member.run;
313 if (run->nFlags & MERF_ENDPARA) {
314 int eollen = c.pRun->member.run.strText->nLen;
315 BOOL keepFirstParaFormat;
317 if (!ME_FindItemFwd(c.pRun, diParagraph))
321 keepFirstParaFormat = (totalChars == nChars && nChars <= eollen &&
323 if (!editor->bEmulateVersion10) /* v4.1 */
325 ME_DisplayItem *next_para = ME_FindItemFwd(c.pRun, diParagraphOrEnd);
326 ME_DisplayItem *this_para = next_para->member.para.prev_para;
328 /* The end of paragraph before a table row is only deleted if there
329 * is nothing else on the line before it. */
330 if (this_para == start_para &&
331 next_para->member.para.nFlags & MEPF_ROWSTART)
333 /* If the paragraph will be empty, then it should be deleted, however
334 * it still might have text right now which would inherit the
335 * MEPF_STARTROW property if we joined it right now.
336 * Instead we will delete it after the preceding text is deleted. */
337 if (nOfs > this_para->member.para.nCharOfs) {
338 /* Skip this end of line. */
339 nChars -= (eollen < nChars) ? eollen : nChars;
342 keepFirstParaFormat = TRUE;
345 ME_JoinParagraphs(editor, c.pPara, keepFirstParaFormat);
346 /* ME_SkipAndPropagateCharOffset(p->pRun, shift); */
347 ME_CheckCharOffsets(editor);
348 nChars -= (eollen < nChars) ? eollen : nChars;
354 int nCharsToDelete = min(nChars, c.nOffset);
357 c.nOffset -= nCharsToDelete;
359 ME_FindItemBack(c.pRun, diParagraph)->member.para.nFlags |= MEPF_REWRAP;
362 /* nChars is the number of characters that should be deleted from the
363 PRECEDING runs (these BEFORE cursor.pRun)
364 nCharsToDelete is a number of chars to delete from THIS run */
365 nChars -= nCharsToDelete;
366 shift -= nCharsToDelete;
367 TRACE("Deleting %d (remaning %d) chars at %d in '%s' (%d)\n",
368 nCharsToDelete, nChars, c.nOffset,
369 debugstr_w(run->strText->szData), run->strText->nLen);
371 if (!c.nOffset && run->strText->nLen == nCharsToDelete)
373 /* undo = reinsert whole run */
374 /* nOfs is a character offset (from the start of the document
375 to the current (deleted) run */
376 ME_UndoItem *pUndo = ME_AddUndoItem(editor, diUndoInsertRun, c.pRun);
378 pUndo->di.member.run.nCharOfs = nOfs+nChars;
382 /* undo = reinsert partial run */
383 ME_UndoItem *pUndo = ME_AddUndoItem(editor, diUndoInsertRun, c.pRun);
385 ME_DestroyString(pUndo->di.member.run.strText);
386 pUndo->di.member.run.nCharOfs = nOfs+nChars;
387 pUndo->di.member.run.strText = ME_MakeStringN(run->strText->szData+c.nOffset, nCharsToDelete);
390 TRACE("Post deletion string: %s (%d)\n", debugstr_w(run->strText->szData), run->strText->nLen);
391 TRACE("Shift value: %d\n", shift);
392 ME_StrDeleteV(run->strText, c.nOffset, nCharsToDelete);
394 /* update cursors (including c) */
395 for (i=-1; i<editor->nCursors; i++) {
396 ME_Cursor *pThisCur = editor->pCursors + i;
397 if (i == -1) pThisCur = &c;
398 if (pThisCur->pRun == cursor.pRun) {
399 if (pThisCur->nOffset > cursor.nOffset) {
400 if (pThisCur->nOffset-cursor.nOffset < nCharsToDelete)
401 pThisCur->nOffset = cursor.nOffset;
403 pThisCur->nOffset -= nCharsToDelete;
404 assert(pThisCur->nOffset >= 0);
405 assert(pThisCur->nOffset <= run->strText->nLen);
407 if (pThisCur->nOffset == run->strText->nLen)
409 pThisCur->pRun = ME_FindItemFwd(pThisCur->pRun, diRunOrParagraphOrEnd);
410 assert(pThisCur->pRun->type == diRun);
411 pThisCur->nOffset = 0;
416 /* c = updated data now */
418 if (c.pRun == cursor.pRun)
419 ME_SkipAndPropagateCharOffset(c.pRun, shift);
421 ME_PropagateCharOffset(c.pRun, shift);
423 if (!cursor.pRun->member.run.strText->nLen)
425 TRACE("Removing useless run\n");
426 ME_Remove(cursor.pRun);
427 ME_DestroyDisplayItem(cursor.pRun);
432 ME_CheckCharOffsets(editor);
440 BOOL ME_DeleteTextAtCursor(ME_TextEditor *editor, int nCursor, int nChars)
442 assert(nCursor>=0 && nCursor<editor->nCursors);
443 /* text operations set modified state */
444 editor->nModifyStep = 1;
445 return ME_InternalDeleteText(editor, ME_GetCursorOfs(&editor->pCursors[nCursor]),
449 static ME_DisplayItem *
450 ME_InternalInsertTextFromCursor(ME_TextEditor *editor, int nCursor,
451 const WCHAR *str, int len, ME_Style *style,
454 ME_Cursor *p = &editor->pCursors[nCursor];
456 editor->bCaretAtEnd = FALSE;
458 assert(p->pRun->type == diRun);
460 return ME_InsertRunAtCursor(editor, p, style, str, len, flags);
464 void ME_InsertOLEFromCursor(ME_TextEditor *editor, const REOBJECT* reo, int nCursor)
466 ME_Style *pStyle = ME_GetInsertStyle(editor, nCursor);
471 if (ME_IsSelection(editor))
472 ME_DeleteSelection(editor);
474 di = ME_InternalInsertTextFromCursor(editor, nCursor, &space, 1, pStyle,
476 di->member.run.ole_obj = ALLOC_OBJ(*reo);
477 ME_CopyReObject(di->member.run.ole_obj, reo);
478 ME_ReleaseStyle(pStyle);
482 void ME_InsertEndRowFromCursor(ME_TextEditor *editor, int nCursor)
484 ME_Style *pStyle = ME_GetInsertStyle(editor, nCursor);
489 if (ME_IsSelection(editor))
490 ME_DeleteSelection(editor);
492 di = ME_InternalInsertTextFromCursor(editor, nCursor, &space, 1, pStyle,
494 ME_ReleaseStyle(pStyle);
498 void ME_InsertTextFromCursor(ME_TextEditor *editor, int nCursor,
499 const WCHAR *str, int len, ME_Style *style)
505 /* FIXME really HERE ? */
506 if (ME_IsSelection(editor))
507 ME_DeleteSelection(editor);
509 /* FIXME: is this too slow? */
510 /* Didn't affect performance for WM_SETTEXT (around 50sec/30K) */
511 oldLen = ME_GetTextLength(editor);
513 /* text operations set modified state */
514 editor->nModifyStep = 1;
518 assert(nCursor>=0 && nCursor<editor->nCursors);
522 /* grow the text limit to fit our text */
523 if(editor->nTextLimit < oldLen +len)
524 editor->nTextLimit = oldLen + len;
530 /* FIXME this sucks - no respect for unicode (what else can be a line separator in unicode?) */
531 while(pos - str < len && *pos != '\r' && *pos != '\n' && *pos != '\t')
534 if (pos != str) { /* handle text */
535 ME_InternalInsertTextFromCursor(editor, nCursor, str, pos-str, style, 0);
536 } else if (*pos == '\t') { /* handle tabs */
538 ME_InternalInsertTextFromCursor(editor, nCursor, &tab, 1, style, MERF_TAB);
540 } else { /* handle EOLs */
541 ME_DisplayItem *tp, *end_run;
545 /* Find number of CR and LF in end of paragraph run */
548 if (len > 1 && pos[1] == '\n')
550 else if (len > 2 && pos[1] == '\r' && pos[2] == '\n')
555 assert(*pos == '\n');
560 if (!editor->bEmulateVersion10 && eol_len == 3)
562 /* handle special \r\r\n sequence (richedit 2.x and higher only) */
564 ME_InternalInsertTextFromCursor(editor, nCursor, &space, 1, style, 0);
568 if (!editor->bEmulateVersion10) {
570 eol_str = ME_MakeStringN(&cr, 1);
572 eol_str = ME_MakeStringN(str, eol_len);
575 p = &editor->pCursors[nCursor];
577 ME_SplitRunSimple(editor, p->pRun, p->nOffset);
578 p = &editor->pCursors[nCursor];
580 tmp_style = ME_GetInsertStyle(editor, nCursor);
581 /* ME_SplitParagraph increases style refcount */
582 tp = ME_SplitParagraph(editor, p->pRun, p->pRun->member.run.style, eol_str, 0);
583 p->pRun = ME_FindItemFwd(tp, diRun);
584 p->pPara = ME_GetParagraph(p->pRun);
585 end_run = ME_FindItemBack(tp, diRun);
586 ME_ReleaseStyle(end_run->member.run.style);
587 end_run->member.run.style = tmp_style;
598 ME_MoveCursorChars(ME_TextEditor *editor, ME_Cursor *pCursor, int nRelOfs)
600 ME_DisplayItem *pRun = pCursor->pRun;
604 if (!pCursor->nOffset)
606 ME_DisplayItem *pPara = pCursor->pPara;
608 pRun = ME_FindItemBack(pRun, diRunOrParagraph);
616 if (pPara->member.para.prev_para->type == diTextStart)
618 pRun = ME_FindItemBack(pPara, diRunOrParagraph);
619 pPara = pPara->member.para.prev_para;
620 /* every paragraph ought to have at least one run */
621 assert(pRun && pRun->type == diRun);
622 assert(pRun->member.run.nFlags & MERF_ENDPARA);
625 assert(pRun->type != diRun && pRun->type != diParagraph);
628 } while (RUN_IS_HIDDEN(&pRun->member.run) ||
629 pRun->member.run.nFlags & MERF_HIDDEN);
630 pCursor->pPara = pPara;
631 pCursor->pRun = pRun;
632 if (pRun->member.run.nFlags & MERF_ENDPARA)
633 pCursor->nOffset = 0;
635 pCursor->nOffset = pRun->member.run.strText->nLen;
638 if (pCursor->nOffset)
639 pCursor->nOffset = pCursor->nOffset + nRelOfs;
644 if (!(pRun->member.run.nFlags & MERF_ENDPARA))
646 int new_ofs = pCursor->nOffset + nRelOfs;
648 if (new_ofs < pRun->member.run.strText->nLen)
650 pCursor->nOffset = new_ofs;
655 pRun = ME_FindItemFwd(pRun, diRun);
656 } while (pRun && (RUN_IS_HIDDEN(&pRun->member.run) ||
657 pRun->member.run.nFlags & MERF_HIDDEN));
660 pCursor->pPara = ME_GetParagraph(pRun);
661 pCursor->pRun = pRun;
662 pCursor->nOffset = 0;
671 ME_MoveCursorWords(ME_TextEditor *editor, ME_Cursor *cursor, int nRelOfs)
673 ME_DisplayItem *pRun = cursor->pRun, *pOtherRun;
674 int nOffset = cursor->nOffset;
678 /* Backward movement */
681 nOffset = ME_CallWordBreakProc(editor, pRun->member.run.strText,
682 nOffset, WB_MOVEWORDLEFT);
685 pOtherRun = ME_FindItemBack(pRun, diRunOrParagraph);
686 if (pOtherRun->type == diRun)
688 if (ME_CallWordBreakProc(editor, pOtherRun->member.run.strText,
689 pOtherRun->member.run.strText->nLen - 1,
691 && !(pRun->member.run.nFlags & MERF_ENDPARA)
692 && !(cursor->pRun == pRun && cursor->nOffset == 0)
693 && !ME_CallWordBreakProc(editor, pRun->member.run.strText, 0,
697 nOffset = pOtherRun->member.run.strText->nLen;
699 else if (pOtherRun->type == diParagraph)
701 if (cursor->pRun == pRun && cursor->nOffset == 0)
703 /* Skip empty start of table row paragraph */
704 if (pOtherRun->member.para.prev_para->member.para.nFlags & MEPF_ROWSTART)
705 pOtherRun = pOtherRun->member.para.prev_para;
706 /* Paragraph breaks are treated as separate words */
707 if (pOtherRun->member.para.prev_para->type == diTextStart)
710 pRun = ME_FindItemBack(pOtherRun, diRun);
718 /* Forward movement */
719 BOOL last_delim = FALSE;
723 if (last_delim && !ME_CallWordBreakProc(editor, pRun->member.run.strText,
724 nOffset, WB_ISDELIMITER))
726 nOffset = ME_CallWordBreakProc(editor, pRun->member.run.strText,
727 nOffset, WB_MOVEWORDRIGHT);
728 if (nOffset < pRun->member.run.strText->nLen)
730 pOtherRun = ME_FindItemFwd(pRun, diRunOrParagraphOrEnd);
731 if (pOtherRun->type == diRun)
733 last_delim = ME_CallWordBreakProc(editor, pRun->member.run.strText,
734 nOffset - 1, WB_ISDELIMITER);
738 else if (pOtherRun->type == diParagraph)
740 if (pOtherRun->member.para.nFlags & MEPF_ROWSTART)
741 pOtherRun = pOtherRun->member.para.next_para;
742 if (cursor->pRun == pRun)
743 pRun = ME_FindItemFwd(pOtherRun, diRun);
749 if (cursor->pRun == pRun)
756 cursor->pPara = ME_GetParagraph(pRun);
758 cursor->nOffset = nOffset;
764 ME_SelectByType(ME_TextEditor *editor, ME_SelectionType selectionType)
766 /* pCursor[0] is the end of the selection
767 * pCursor[1] is the start of the selection (or the position selection anchor)
768 * pCursor[2] and [3] are the selection anchors that are backed up
769 * so they are kept when the selection changes for drag selection.
772 editor->nSelectionType = selectionType;
773 switch(selectionType)
778 ME_MoveCursorWords(editor, &editor->pCursors[0], +1);
779 editor->pCursors[1] = editor->pCursors[0];
780 ME_MoveCursorWords(editor, &editor->pCursors[1], -1);
785 ME_DisplayItem *pItem;
786 ME_DIType fwdSearchType, backSearchType;
787 if (selectionType == stParagraph) {
788 backSearchType = diParagraph;
789 fwdSearchType = diParagraphOrEnd;
791 backSearchType = diStartRow;
792 fwdSearchType = diStartRowOrParagraphOrEnd;
794 pItem = ME_FindItemFwd(editor->pCursors[0].pRun, fwdSearchType);
796 if (pItem->type == diTextEnd)
797 editor->pCursors[0].pRun = ME_FindItemBack(pItem, diRun);
799 editor->pCursors[0].pRun = ME_FindItemFwd(pItem, diRun);
800 editor->pCursors[0].pPara = ME_GetParagraph(editor->pCursors[0].pRun);
801 editor->pCursors[0].nOffset = 0;
803 pItem = ME_FindItemBack(pItem, backSearchType);
804 editor->pCursors[1].pRun = ME_FindItemFwd(pItem, diRun);
805 editor->pCursors[1].pPara = ME_GetParagraph(editor->pCursors[1].pRun);
806 editor->pCursors[1].nOffset = 0;
810 /* Select everything with cursor anchored from the start of the text */
811 editor->nSelectionType = stDocument;
812 editor->pCursors[1].pPara = editor->pBuffer->pFirst->member.para.next_para;
813 editor->pCursors[1].pRun = ME_FindItemFwd(editor->pCursors[1].pPara, diRun);
814 editor->pCursors[1].nOffset = 0;
815 editor->pCursors[0].pPara = editor->pBuffer->pLast->member.para.prev_para;
816 editor->pCursors[0].pRun = ME_FindItemBack(editor->pBuffer->pLast, diRun);
817 editor->pCursors[0].nOffset = 0;
821 /* Store the anchor positions for extending the selection. */
822 editor->pCursors[2] = editor->pCursors[0];
823 editor->pCursors[3] = editor->pCursors[1];
826 int ME_GetCursorOfs(const ME_Cursor *cursor)
828 return cursor->pPara->member.para.nCharOfs
829 + cursor->pRun->member.run.nCharOfs + cursor->nOffset;
832 /* Helper function for ME_FindPixelPos to find paragraph within tables */
833 static ME_DisplayItem* ME_FindPixelPosInTableRow(int x, int y,
834 ME_DisplayItem *para)
836 ME_DisplayItem *cell, *next_cell;
837 assert(para->member.para.nFlags & MEPF_ROWSTART);
838 cell = para->member.para.next_para->member.para.pCell;
841 /* find the cell we are in */
842 while ((next_cell = cell->member.cell.next_cell) != NULL) {
843 if (x < next_cell->member.cell.pt.x)
845 para = ME_FindItemFwd(cell, diParagraph);
846 /* Found the cell, but there might be multiple paragraphs in
847 * the cell, so need to search down the cell for the paragraph. */
848 while (cell == para->member.para.pCell) {
849 if (y < para->member.para.pt.y + para->member.para.nHeight)
851 if (para->member.para.nFlags & MEPF_ROWSTART)
852 return ME_FindPixelPosInTableRow(x, y, para);
856 para = para->member.para.next_para;
858 /* Past the end of the cell, so go back to the last cell paragraph */
859 return para->member.para.prev_para;
863 /* Return table row delimiter */
864 para = ME_FindItemFwd(cell, diParagraph);
865 assert(para->member.para.nFlags & MEPF_ROWEND);
866 assert(para->member.para.pFmt->dwMask & PFM_TABLEROWDELIMITER);
867 assert(para->member.para.pFmt->wEffects & PFE_TABLEROWDELIMITER);
871 static BOOL ME_ReturnFoundPos(ME_TextEditor *editor, ME_DisplayItem *found,
872 ME_Cursor *result, int rx, BOOL isExact)
875 assert(found->type == diRun);
876 if ((found->member.run.nFlags & MERF_ENDPARA) || rx < 0)
878 result->pRun = found;
879 result->nOffset = ME_CharFromPointCursor(editor, rx, &found->member.run);
880 if (editor->pCursors[0].nOffset == found->member.run.strText->nLen && rx)
882 result->pRun = ME_FindItemFwd(editor->pCursors[0].pRun, diRun);
885 result->pPara = ME_GetParagraph(result->pRun);
889 /* Finds the run and offset from the pixel position.
891 * x & y are pixel positions in virtual coordinates into the rich edit control,
892 * so client coordinates must first be adjusted by the scroll position.
894 * returns TRUE if the result was exactly under the cursor, otherwise returns
895 * FALSE, and result is set to the closest position to the coordinates.
897 static BOOL ME_FindPixelPos(ME_TextEditor *editor, int x, int y,
898 ME_Cursor *result, BOOL *is_eol)
900 ME_DisplayItem *p = editor->pBuffer->pFirst->member.para.next_para;
901 ME_DisplayItem *last = NULL;
905 x -= editor->rcFormat.left;
906 y -= editor->rcFormat.top;
912 for (; p != editor->pBuffer->pLast; p = p->member.para.next_para)
914 assert(p->type == diParagraph);
915 if (y < p->member.para.pt.y + p->member.para.nHeight)
917 if (p->member.para.nFlags & MEPF_ROWSTART)
918 p = ME_FindPixelPosInTableRow(x, y, p);
919 y -= p->member.para.pt.y;
920 p = ME_FindItemFwd(p, diStartRow);
922 } else if (p->member.para.nFlags & MEPF_ROWSTART) {
923 p = ME_GetTableRowEnd(p);
927 for (; p != editor->pBuffer->pLast; )
930 assert(p->type == diStartRow);
931 if (y < p->member.row.pt.y + p->member.row.nHeight)
933 p = ME_FindItemFwd(p, diRun);
936 pp = ME_FindItemFwd(p, diStartRowOrParagraphOrEnd);
937 if (pp->type != diStartRow)
939 p = ME_FindItemFwd(p, diRun);
944 if (p == editor->pBuffer->pLast)
946 /* The position is below the last paragraph, so the last row will be used
947 * rather than the end of the text, so the x position will be used to
948 * determine the offset closest to the pixel position. */
950 p = ME_FindItemBack(p, diStartRow);
952 p = ME_FindItemFwd(p, diRun);
956 p = editor->pBuffer->pLast;
959 for (; p != editor->pBuffer->pLast; p = p->next)
964 rx = x - p->member.run.pt.x;
965 if (rx < p->member.run.nWidth)
966 return ME_ReturnFoundPos(editor, p, result, rx, isExact);
970 p = ME_FindItemFwd(p, diRun);
971 if (is_eol) *is_eol = 1;
972 rx = 0; /* FIXME not sure */
973 return ME_ReturnFoundPos(editor, p, result, rx, isExact);
978 rx = 0; /* FIXME not sure */
980 return ME_ReturnFoundPos(editor, p, result, rx, isExact);
985 result->pRun = ME_FindItemBack(p, diRun);
986 result->pPara = ME_GetParagraph(result->pRun);
988 assert(result->pRun->member.run.nFlags & MERF_ENDPARA);
993 /* Returns the character offset closest to the pixel position
995 * x & y are pixel positions in client coordinates.
997 * isExact will be set to TRUE if the run is directly under the pixel
998 * position, FALSE if it not, unless isExact is set to NULL.
1000 int ME_CharFromPos(ME_TextEditor *editor, int x, int y, BOOL *isExact)
1006 ITextHost_TxGetClientRect(editor->texthost, &rc);
1007 if (x < 0 || y < 0 || x >= rc.right || y >= rc.bottom) {
1008 if (isExact) *isExact = FALSE;
1011 x += editor->horz_si.nPos;
1012 y += editor->vert_si.nPos;
1013 bResult = ME_FindPixelPos(editor, x, y, &cursor, NULL);
1014 if (isExact) *isExact = bResult;
1015 return cursor.pPara->member.para.nCharOfs
1016 + cursor.pRun->member.run.nCharOfs + cursor.nOffset;
1021 /* Extends the selection with a word, line, or paragraph selection type.
1023 * The selection is anchored by editor->pCursors[2-3] such that the text
1024 * between the anchors will remain selected, and one end will be extended.
1026 * editor->pCursors[0] should have the position to extend the selection to
1027 * before this function is called.
1029 * Nothing will be done if editor->nSelectionType equals stPosition.
1031 static void ME_ExtendAnchorSelection(ME_TextEditor *editor)
1033 ME_Cursor tmp_cursor;
1034 int curOfs, anchorStartOfs, anchorEndOfs;
1035 if (editor->nSelectionType == stPosition || editor->nSelectionType == stDocument)
1037 curOfs = ME_GetCursorOfs(&editor->pCursors[0]);
1038 anchorStartOfs = ME_GetCursorOfs(&editor->pCursors[3]);
1039 anchorEndOfs = ME_GetCursorOfs(&editor->pCursors[2]);
1041 tmp_cursor = editor->pCursors[0];
1042 editor->pCursors[0] = editor->pCursors[2];
1043 editor->pCursors[1] = editor->pCursors[3];
1044 if (curOfs < anchorStartOfs)
1046 /* Extend the left side of selection */
1047 editor->pCursors[1] = tmp_cursor;
1048 if (editor->nSelectionType == stWord)
1049 ME_MoveCursorWords(editor, &editor->pCursors[1], -1);
1052 ME_DisplayItem *pItem;
1053 ME_DIType searchType = ((editor->nSelectionType == stLine) ?
1054 diStartRowOrParagraph:diParagraph);
1055 pItem = ME_FindItemBack(editor->pCursors[1].pRun, searchType);
1056 editor->pCursors[1].pRun = ME_FindItemFwd(pItem, diRun);
1057 editor->pCursors[1].pPara = ME_GetParagraph(editor->pCursors[1].pRun);
1058 editor->pCursors[1].nOffset = 0;
1061 else if (curOfs >= anchorEndOfs)
1063 /* Extend the right side of selection */
1064 editor->pCursors[0] = tmp_cursor;
1065 if (editor->nSelectionType == stWord)
1066 ME_MoveCursorWords(editor, &editor->pCursors[0], +1);
1069 ME_DisplayItem *pItem;
1070 ME_DIType searchType = ((editor->nSelectionType == stLine) ?
1071 diStartRowOrParagraphOrEnd:diParagraphOrEnd);
1072 pItem = ME_FindItemFwd(editor->pCursors[0].pRun, searchType);
1073 if (pItem->type == diTextEnd)
1074 editor->pCursors[0].pRun = ME_FindItemBack(pItem, diRun);
1076 editor->pCursors[0].pRun = ME_FindItemFwd(pItem, diRun);
1077 editor->pCursors[0].pPara = ME_GetParagraph(editor->pCursors[0].pRun);
1078 editor->pCursors[0].nOffset = 0;
1083 void ME_LButtonDown(ME_TextEditor *editor, int x, int y, int clickNum)
1085 ME_Cursor tmp_cursor;
1086 int is_selection = 0;
1089 editor->nUDArrowX = -1;
1091 x += editor->horz_si.nPos;
1092 y += editor->vert_si.nPos;
1094 tmp_cursor = editor->pCursors[0];
1095 is_selection = ME_IsSelection(editor);
1096 is_shift = GetKeyState(VK_SHIFT) < 0;
1098 ME_FindPixelPos(editor, x, y, &editor->pCursors[0], &editor->bCaretAtEnd);
1100 if (x >= editor->rcFormat.left || is_shift)
1104 editor->pCursors[1] = editor->pCursors[0];
1106 if (x >= editor->rcFormat.left)
1107 ME_SelectByType(editor, stWord);
1109 ME_SelectByType(editor, stParagraph);
1110 } else if (clickNum % 2 == 0) {
1111 ME_SelectByType(editor, stWord);
1113 ME_SelectByType(editor, stParagraph);
1118 editor->nSelectionType = stPosition;
1119 editor->pCursors[1] = editor->pCursors[0];
1121 else if (!is_selection)
1123 editor->nSelectionType = stPosition;
1124 editor->pCursors[1] = tmp_cursor;
1126 else if (editor->nSelectionType != stPosition)
1128 ME_ExtendAnchorSelection(editor);
1134 ME_SelectByType(editor, stLine);
1135 } else if (clickNum % 2 == 0 || is_shift) {
1136 ME_SelectByType(editor, stParagraph);
1138 ME_SelectByType(editor, stDocument);
1141 ME_InvalidateSelection(editor);
1142 ITextHost_TxShowCaret(editor->texthost, FALSE);
1143 ME_ShowCaret(editor);
1144 ME_ClearTempStyle(editor);
1145 ME_SendSelChange(editor);
1148 void ME_MouseMove(ME_TextEditor *editor, int x, int y)
1150 ME_Cursor tmp_cursor;
1152 if (editor->nSelectionType == stDocument)
1154 x += editor->horz_si.nPos;
1155 y += editor->vert_si.nPos;
1157 tmp_cursor = editor->pCursors[0];
1158 /* FIXME: do something with the return value of ME_FindPixelPos */
1159 ME_FindPixelPos(editor, x, y, &tmp_cursor, &editor->bCaretAtEnd);
1161 ME_InvalidateSelection(editor);
1162 editor->pCursors[0] = tmp_cursor;
1163 ME_ExtendAnchorSelection(editor);
1165 if (editor->nSelectionType != stPosition &&
1166 memcmp(&editor->pCursors[1], &editor->pCursors[3], sizeof(ME_Cursor)))
1168 /* The scroll the cursor towards the other end, since it was the one
1169 * extended by ME_ExtendAnchorSelection */
1170 ME_EnsureVisible(editor, &editor->pCursors[1]);
1172 ME_EnsureVisible(editor, &editor->pCursors[0]);
1175 ME_InvalidateSelection(editor);
1176 ITextHost_TxShowCaret(editor->texthost, FALSE);
1177 ME_ShowCaret(editor);
1178 ME_SendSelChange(editor);
1181 static ME_DisplayItem *ME_FindRunInRow(ME_TextEditor *editor, ME_DisplayItem *pRow,
1182 int x, int *pOffset, int *pbCaretAtEnd)
1184 ME_DisplayItem *pNext, *pLastRun;
1185 pNext = ME_FindItemFwd(pRow, diRunOrStartRow);
1186 assert(pNext->type == diRun);
1188 if (pbCaretAtEnd) *pbCaretAtEnd = FALSE;
1189 if (pOffset) *pOffset = 0;
1191 int run_x = pNext->member.run.pt.x;
1192 int width = pNext->member.run.nWidth;
1197 if (x >= run_x && x < run_x+width)
1199 int ch = ME_CharFromPointCursor(editor, x-run_x, &pNext->member.run);
1200 ME_String *s = pNext->member.run.strText;
1208 pNext = ME_FindItemFwd(pNext, diRunOrStartRow);
1209 } while(pNext && pNext->type == diRun);
1211 if ((pLastRun->member.run.nFlags & MERF_ENDPARA) == 0)
1213 pNext = ME_FindItemFwd(pNext, diRun);
1214 if (pbCaretAtEnd) *pbCaretAtEnd = TRUE;
1221 static int ME_GetXForArrow(ME_TextEditor *editor, ME_Cursor *pCursor)
1223 ME_DisplayItem *pRun = pCursor->pRun;
1226 if (editor->nUDArrowX != -1)
1227 x = editor->nUDArrowX;
1229 if (editor->bCaretAtEnd)
1231 pRun = ME_FindItemBack(pRun, diRun);
1233 x = pRun->member.run.pt.x + pRun->member.run.nWidth;
1236 x = pRun->member.run.pt.x;
1237 x += ME_PointFromChar(editor, &pRun->member.run, pCursor->nOffset);
1239 editor->nUDArrowX = x;
1246 ME_MoveCursorLines(ME_TextEditor *editor, ME_Cursor *pCursor, int nRelOfs)
1248 ME_DisplayItem *pRun = pCursor->pRun;
1249 ME_DisplayItem *pItem, *pOldPara, *pNewPara;
1250 int x = ME_GetXForArrow(editor, pCursor);
1252 if (editor->bCaretAtEnd && !pCursor->nOffset)
1253 pRun = ME_FindItemBack(pRun, diRun);
1256 pOldPara = ME_GetParagraph(pRun);
1259 /* start of this row */
1260 pItem = ME_FindItemBack(pRun, diStartRow);
1262 /* start of the previous row */
1263 pItem = ME_FindItemBack(pItem, diStartRow);
1265 return; /* row not found - ignore */
1266 pNewPara = ME_GetParagraph(pItem);
1267 if (pOldPara->member.para.nFlags & MEPF_ROWEND ||
1268 (pOldPara->member.para.pCell &&
1269 pOldPara->member.para.pCell != pNewPara->member.para.pCell))
1271 /* Brought out of a cell */
1272 pNewPara = ME_GetTableRowStart(pOldPara)->member.para.prev_para;
1273 if (pNewPara->type == diTextStart)
1274 return; /* At the top, so don't go anywhere. */
1275 pItem = ME_FindItemFwd(pNewPara, diStartRow);
1277 if (pNewPara->member.para.nFlags & MEPF_ROWEND)
1279 /* Brought into a table row */
1280 ME_Cell *cell = &ME_FindItemBack(pNewPara, diCell)->member.cell;
1281 while (x < cell->pt.x && cell->prev_cell)
1282 cell = &cell->prev_cell->member.cell;
1283 if (cell->next_cell) /* else - we are still at the end of the row */
1284 pItem = ME_FindItemBack(cell->next_cell, diStartRow);
1289 /* start of the next row */
1290 pItem = ME_FindItemFwd(pRun, diStartRow);
1292 return; /* row not found - ignore */
1293 pNewPara = ME_GetParagraph(pItem);
1294 if (pOldPara->member.para.nFlags & MEPF_ROWSTART ||
1295 (pOldPara->member.para.pCell &&
1296 pOldPara->member.para.pCell != pNewPara->member.para.pCell))
1298 /* Brought out of a cell */
1299 pNewPara = ME_GetTableRowEnd(pOldPara)->member.para.next_para;
1300 if (pNewPara->type == diTextEnd)
1301 return; /* At the bottom, so don't go anywhere. */
1302 pItem = ME_FindItemFwd(pNewPara, diStartRow);
1304 if (pNewPara->member.para.nFlags & MEPF_ROWSTART)
1306 /* Brought into a table row */
1307 ME_DisplayItem *cell = ME_FindItemFwd(pNewPara, diCell);
1308 while (cell->member.cell.next_cell &&
1309 x >= cell->member.cell.next_cell->member.cell.pt.x)
1310 cell = cell->member.cell.next_cell;
1311 pItem = ME_FindItemFwd(cell, diStartRow);
1316 /* row not found - ignore */
1319 pCursor->pRun = ME_FindRunInRow(editor, pItem, x, &pCursor->nOffset, &editor->bCaretAtEnd);
1320 pCursor->pPara = ME_GetParagraph(pCursor->pRun);
1321 assert(pCursor->pRun);
1322 assert(pCursor->pRun->type == diRun);
1325 static void ME_ArrowPageUp(ME_TextEditor *editor, ME_Cursor *pCursor)
1327 ME_DisplayItem *p = ME_FindItemFwd(editor->pBuffer->pFirst, diStartRow);
1329 if (editor->vert_si.nPos < p->member.row.nHeight)
1331 pCursor->pPara = editor->pBuffer->pFirst->member.para.next_para;
1332 pCursor->pRun = ME_FindItemFwd(pCursor->pPara, diRun);
1333 pCursor->nOffset = 0;
1334 editor->bCaretAtEnd = FALSE;
1335 /* Native clears seems to clear this x value on page up at the top
1336 * of the text, but not on page down at the end of the text.
1337 * Doesn't make sense, but we try to be bug for bug compatible. */
1338 editor->nUDArrowX = -1;
1340 ME_DisplayItem *pRun = pCursor->pRun;
1341 ME_DisplayItem *pLast;
1342 int x, y, ys, yd, yp, yprev;
1343 int yOldScrollPos = editor->vert_si.nPos;
1345 x = ME_GetXForArrow(editor, pCursor);
1346 if (!pCursor->nOffset && editor->bCaretAtEnd)
1347 pRun = ME_FindItemBack(pRun, diRun);
1349 p = ME_FindItemBack(pRun, diStartRowOrParagraph);
1350 assert(p->type == diStartRow);
1351 yp = ME_FindItemBack(p, diParagraph)->member.para.pt.y;
1352 yprev = ys = y = yp + p->member.row.pt.y;
1354 ME_ScrollUp(editor, editor->sizeWindow.cy);
1355 /* Only move the cursor by the amount scrolled. */
1356 yd = y + editor->vert_si.nPos - yOldScrollPos;
1360 p = ME_FindItemBack(p, diStartRowOrParagraph);
1363 if (p->type == diParagraph) { /* crossing paragraphs */
1364 if (p->member.para.prev_para == NULL)
1366 yp = p->member.para.prev_para->member.para.pt.y;
1369 y = yp + p->member.row.pt.y;
1376 pCursor->pRun = ME_FindRunInRow(editor, pLast, x, &pCursor->nOffset,
1377 &editor->bCaretAtEnd);
1378 pCursor->pPara = ME_GetParagraph(pCursor->pRun);
1380 assert(pCursor->pRun);
1381 assert(pCursor->pRun->type == diRun);
1384 static void ME_ArrowPageDown(ME_TextEditor *editor, ME_Cursor *pCursor)
1386 ME_DisplayItem *pLast;
1389 /* Find y position of the last row */
1390 pLast = editor->pBuffer->pLast;
1391 y = pLast->member.para.prev_para->member.para.pt.y
1392 + ME_FindItemBack(pLast, diStartRow)->member.row.pt.y;
1394 x = ME_GetXForArrow(editor, pCursor);
1396 if (editor->vert_si.nPos >= y - editor->sizeWindow.cy)
1398 pCursor->pPara = editor->pBuffer->pLast->member.para.prev_para;
1399 pCursor->pRun = ME_FindItemBack(editor->pBuffer->pLast, diRun);
1400 pCursor->nOffset = 0;
1401 editor->bCaretAtEnd = FALSE;
1403 ME_DisplayItem *pRun = pCursor->pRun;
1405 int ys, yd, yp, yprev;
1406 int yOldScrollPos = editor->vert_si.nPos;
1408 if (!pCursor->nOffset && editor->bCaretAtEnd)
1409 pRun = ME_FindItemBack(pRun, diRun);
1411 p = ME_FindItemBack(pRun, diStartRowOrParagraph);
1412 assert(p->type == diStartRow);
1413 yp = ME_FindItemBack(p, diParagraph)->member.para.pt.y;
1414 yprev = ys = y = yp + p->member.row.pt.y;
1416 /* For native richedit controls:
1417 * v1.0 - v3.1 can only scroll down as far as the scrollbar lets us
1418 * v4.1 can scroll past this position here. */
1419 ME_ScrollDown(editor, editor->sizeWindow.cy);
1420 /* Only move the cursor by the amount scrolled. */
1421 yd = y + editor->vert_si.nPos - yOldScrollPos;
1425 p = ME_FindItemFwd(p, diStartRowOrParagraph);
1428 if (p->type == diParagraph) {
1429 yp = p->member.para.pt.y;
1432 y = yp + p->member.row.pt.y;
1439 pCursor->pRun = ME_FindRunInRow(editor, pLast, x, &pCursor->nOffset,
1440 &editor->bCaretAtEnd);
1441 pCursor->pPara = ME_GetParagraph(pCursor->pRun);
1443 assert(pCursor->pRun);
1444 assert(pCursor->pRun->type == diRun);
1447 static void ME_ArrowHome(ME_TextEditor *editor, ME_Cursor *pCursor)
1449 ME_DisplayItem *pRow = ME_FindItemBack(pCursor->pRun, diStartRow);
1451 ME_DisplayItem *pRun;
1452 if (editor->bCaretAtEnd && !pCursor->nOffset) {
1453 pRow = ME_FindItemBack(pRow, diStartRow);
1457 pRun = ME_FindItemFwd(pRow, diRun);
1459 pCursor->pRun = pRun;
1460 assert(pCursor->pPara == ME_GetParagraph(pRun));
1461 pCursor->nOffset = 0;
1464 editor->bCaretAtEnd = FALSE;
1467 static void ME_ArrowCtrlHome(ME_TextEditor *editor, ME_Cursor *pCursor)
1469 pCursor->pPara = editor->pBuffer->pFirst->member.para.next_para;
1470 pCursor->pRun = ME_FindItemFwd(pCursor->pPara, diRun);
1471 pCursor->nOffset = 0;
1472 editor->bCaretAtEnd = FALSE;
1475 static void ME_ArrowEnd(ME_TextEditor *editor, ME_Cursor *pCursor)
1477 ME_DisplayItem *pRow;
1479 if (editor->bCaretAtEnd && !pCursor->nOffset)
1482 pRow = ME_FindItemFwd(pCursor->pRun, diStartRowOrParagraphOrEnd);
1484 if (pRow->type == diStartRow) {
1485 ME_DisplayItem *pRun = ME_FindItemFwd(pRow, diRun);
1487 pCursor->pRun = pRun;
1488 assert(pCursor->pPara == ME_GetParagraph(pCursor->pRun));
1489 pCursor->nOffset = 0;
1490 editor->bCaretAtEnd = TRUE;
1493 pCursor->pRun = ME_FindItemBack(pRow, diRun);
1494 assert(pCursor->pRun && pCursor->pRun->member.run.nFlags & MERF_ENDPARA);
1495 assert(pCursor->pPara == ME_GetParagraph(pCursor->pRun));
1496 pCursor->nOffset = 0;
1497 editor->bCaretAtEnd = FALSE;
1500 static void ME_ArrowCtrlEnd(ME_TextEditor *editor, ME_Cursor *pCursor)
1502 pCursor->pPara = editor->pBuffer->pLast->member.para.prev_para;
1503 pCursor->pRun = ME_FindItemBack(editor->pBuffer->pLast, diRun);
1504 assert(pCursor->pRun->member.run.nFlags & MERF_ENDPARA);
1505 pCursor->nOffset = 0;
1506 editor->bCaretAtEnd = FALSE;
1509 BOOL ME_IsSelection(ME_TextEditor *editor)
1511 return editor->pCursors[0].pRun != editor->pCursors[1].pRun ||
1512 editor->pCursors[0].nOffset != editor->pCursors[1].nOffset;
1515 void ME_DeleteSelection(ME_TextEditor *editor)
1518 int nStartCursor = ME_GetSelectionOfs(editor, &from, &to);
1519 ME_DeleteTextAtCursor(editor, nStartCursor, to - from);
1522 ME_Style *ME_GetSelectionInsertStyle(ME_TextEditor *editor)
1524 return ME_GetInsertStyle(editor, 0);
1527 void ME_SendSelChange(ME_TextEditor *editor)
1531 if (!(editor->nEventMask & ENM_SELCHANGE))
1534 sc.nmhdr.code = EN_SELCHANGE;
1535 ME_GetSelectionOfs(editor, &sc.chrg.cpMin, &sc.chrg.cpMax);
1536 sc.seltyp = SEL_EMPTY;
1537 if (sc.chrg.cpMin != sc.chrg.cpMax)
1538 sc.seltyp |= SEL_TEXT;
1539 if (sc.chrg.cpMin < sc.chrg.cpMax+1) /* what were RICHEDIT authors thinking ? */
1540 sc.seltyp |= SEL_MULTICHAR;
1541 TRACE("cpMin=%d cpMax=%d seltyp=%d (%s %s)\n",
1542 sc.chrg.cpMin, sc.chrg.cpMax, sc.seltyp,
1543 (sc.seltyp & SEL_TEXT) ? "SEL_TEXT" : "",
1544 (sc.seltyp & SEL_MULTICHAR) ? "SEL_MULTICHAR" : "");
1545 if (sc.chrg.cpMin != editor->notified_cr.cpMin || sc.chrg.cpMax != editor->notified_cr.cpMax)
1547 ME_ClearTempStyle(editor);
1549 editor->notified_cr = sc.chrg;
1550 ITextHost_TxNotify(editor->texthost, sc.nmhdr.code, &sc);
1555 ME_ArrowKey(ME_TextEditor *editor, int nVKey, BOOL extend, BOOL ctrl)
1558 ME_Cursor *p = &editor->pCursors[nCursor];
1559 ME_Cursor tmp_curs = *p;
1560 BOOL success = FALSE;
1562 ME_CheckCharOffsets(editor);
1565 editor->bCaretAtEnd = 0;
1567 success = ME_MoveCursorWords(editor, &tmp_curs, -1);
1569 success = ME_MoveCursorChars(editor, &tmp_curs, -1);
1572 editor->bCaretAtEnd = 0;
1574 success = ME_MoveCursorWords(editor, &tmp_curs, +1);
1576 success = ME_MoveCursorChars(editor, &tmp_curs, +1);
1579 ME_MoveCursorLines(editor, &tmp_curs, -1);
1582 ME_MoveCursorLines(editor, &tmp_curs, +1);
1585 ME_ArrowPageUp(editor, &tmp_curs);
1588 ME_ArrowPageDown(editor, &tmp_curs);
1592 ME_ArrowCtrlHome(editor, &tmp_curs);
1594 ME_ArrowHome(editor, &tmp_curs);
1595 editor->bCaretAtEnd = 0;
1600 ME_ArrowCtrlEnd(editor, &tmp_curs);
1602 ME_ArrowEnd(editor, &tmp_curs);
1607 editor->pCursors[1] = tmp_curs;
1610 ME_InvalidateSelection(editor);
1612 ITextHost_TxShowCaret(editor->texthost, FALSE);
1613 ME_EnsureVisible(editor, &tmp_curs);
1614 ME_ShowCaret(editor);
1615 ME_SendSelChange(editor);