2 * RichEdit - functions working on paragraphs of text (diParagraph).
4 * Copyright 2004 by Krzysztof Foltman
5 * Copyright 2006 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
24 WINE_DEFAULT_DEBUG_CHANNEL(richedit);
26 static const WCHAR wszParagraphSign[] = {0xB6, 0};
28 void ME_MakeFirstParagraph(HDC hDC, ME_TextBuffer *text)
34 ME_DisplayItem *para = ME_MakeDI(diParagraph);
38 hf = (HFONT)GetStockObject(SYSTEM_FONT);
40 GetObjectW(hf, sizeof(LOGFONTW), &lf);
41 ZeroMemory(&cf, sizeof(cf));
42 cf.cbSize = sizeof(cf);
43 cf.dwMask = CFM_BACKCOLOR|CFM_COLOR|CFM_FACE|CFM_SIZE|CFM_CHARSET;
44 cf.dwMask |= CFM_ALLCAPS|CFM_BOLD|CFM_DISABLED|CFM_EMBOSS|CFM_HIDDEN;
45 cf.dwMask |= CFM_IMPRINT|CFM_ITALIC|CFM_LINK|CFM_OUTLINE|CFM_PROTECTED;
46 cf.dwMask |= CFM_REVISED|CFM_SHADOW|CFM_SMALLCAPS|CFM_STRIKEOUT;
47 cf.dwMask |= CFM_SUBSCRIPT|CFM_UNDERLINE;
49 cf.dwEffects = CFE_AUTOCOLOR | CFE_AUTOBACKCOLOR;
50 lstrcpyW(cf.szFaceName, lf.lfFaceName);
51 cf.yHeight=lf.lfHeight*1440/GetDeviceCaps(hDC, LOGPIXELSY);
52 if (lf.lfWeight>=700) /* FIXME correct weight ? */
53 cf.dwEffects |= CFE_BOLD;
54 cf.wWeight = lf.lfWeight;
55 if (lf.lfItalic) cf.dwEffects |= CFE_ITALIC;
56 if (lf.lfUnderline) cf.dwEffects |= CFE_UNDERLINE;
57 if (lf.lfStrikeOut) cf.dwEffects |= CFE_STRIKEOUT;
59 ZeroMemory(&fmt, sizeof(fmt));
60 fmt.cbSize = sizeof(fmt);
61 fmt.dwMask = PFM_ALIGNMENT | PFM_OFFSET | PFM_STARTINDENT | PFM_RIGHTINDENT | PFM_TABSTOPS;
63 CopyMemory(para->member.para.pFmt, &fmt, sizeof(PARAFORMAT2));
65 style = ME_MakeStyle(&cf);
66 text->pDefaultStyle = style;
68 run = ME_MakeRun(style, ME_MakeString(wszParagraphSign), MERF_ENDPARA);
69 run->member.run.nCharOfs = 0;
71 ME_InsertBefore(text->pLast, para);
72 ME_InsertBefore(text->pLast, run);
73 para->member.para.prev_para = text->pFirst;
74 para->member.para.next_para = text->pLast;
75 text->pFirst->member.para.next_para = para;
76 text->pLast->member.para.prev_para = para;
78 text->pLast->member.para.nCharOfs = 1;
81 void ME_MarkAllForWrapping(ME_TextEditor *editor)
83 ME_MarkForWrapping(editor, editor->pBuffer->pFirst->member.para.next_para, editor->pBuffer->pLast);
86 void ME_MarkForWrapping(ME_TextEditor *editor, ME_DisplayItem *first, ME_DisplayItem *last)
90 first->member.para.nFlags |= MEPF_REWRAP;
91 first = first->member.para.next_para;
95 /* split paragraph at the beginning of the run */
96 ME_DisplayItem *ME_SplitParagraph(ME_TextEditor *editor, ME_DisplayItem *run, ME_Style *style)
98 ME_DisplayItem *next_para = NULL;
99 ME_DisplayItem *run_para = NULL;
100 ME_DisplayItem *new_para = ME_MakeDI(diParagraph);
101 ME_DisplayItem *end_run = ME_MakeRun(style,ME_MakeString(wszParagraphSign), MERF_ENDPARA);
102 ME_UndoItem *undo = NULL;
105 int end_len = (editor->bEmulateVersion10 ? 2 : 1);
107 assert(run->type == diRun);
109 run_para = ME_GetParagraph(run);
110 assert(run_para->member.para.pFmt->cbSize == sizeof(PARAFORMAT2));
112 ofs = end_run->member.run.nCharOfs = run->member.run.nCharOfs;
113 next_para = run_para->member.para.next_para;
114 assert(next_para == ME_FindItemFwd(run_para, diParagraphOrEnd));
116 undo = ME_AddUndoItem(editor, diUndoJoinParagraphs, NULL);
118 undo->nStart = run_para->member.para.nCharOfs + ofs;
120 /* the new paragraph will have a different starting offset, so let's update its runs */
122 while(pp->type == diRun) {
123 pp->member.run.nCharOfs -= ofs;
124 pp = ME_FindItemFwd(pp, diRunOrParagraphOrEnd);
126 new_para->member.para.nCharOfs = ME_GetParagraph(run)->member.para.nCharOfs+ofs;
127 new_para->member.para.nCharOfs += end_len;
129 new_para->member.para.nFlags = MEPF_REWRAP; /* FIXME copy flags (if applicable) */
130 /* FIXME initialize format style and call ME_SetParaFormat blah blah */
131 CopyMemory(new_para->member.para.pFmt, run_para->member.para.pFmt, sizeof(PARAFORMAT2));
133 /* FIXME remove this as soon as nLeftMargin etc are replaced with proper fields of PARAFORMAT2 */
134 new_para->member.para.nLeftMargin = run_para->member.para.nLeftMargin;
135 new_para->member.para.nRightMargin = run_para->member.para.nRightMargin;
136 new_para->member.para.nFirstMargin = run_para->member.para.nFirstMargin;
138 new_para->member.para.bTable = run_para->member.para.bTable;
140 /* Inherit previous cell definitions if any */
141 new_para->member.para.pCells = NULL;
142 if (run_para->member.para.pCells)
144 ME_TableCell *pCell, *pNewCell;
146 for (pCell = run_para->member.para.pCells; pCell; pCell = pCell->next)
148 pNewCell = ALLOC_OBJ(ME_TableCell);
149 pNewCell->nRightBoundary = pCell->nRightBoundary;
150 pNewCell->next = NULL;
151 if (new_para->member.para.pCells)
152 new_para->member.para.pLastCell->next = pNewCell;
154 new_para->member.para.pCells = pNewCell;
155 new_para->member.para.pLastCell = pNewCell;
159 /* fix paragraph properties. FIXME only needed when called from RTF reader */
160 if (run_para->member.para.pCells && !run_para->member.para.bTable)
162 /* Paragraph does not have an \intbl keyword, so any table definition
163 * stored is invalid */
164 ME_DestroyTableCellList(run_para);
167 /* insert paragraph into paragraph double linked list */
168 new_para->member.para.prev_para = run_para;
169 new_para->member.para.next_para = next_para;
170 run_para->member.para.next_para = new_para;
171 next_para->member.para.prev_para = new_para;
173 /* insert end run of the old paragraph, and new paragraph, into DI double linked list */
174 ME_InsertBefore(run, new_para);
175 ME_InsertBefore(new_para, end_run);
177 /* force rewrap of the */
178 run_para->member.para.prev_para->member.para.nFlags |= MEPF_REWRAP;
179 new_para->member.para.prev_para->member.para.nFlags |= MEPF_REWRAP;
181 /* we've added the end run, so we need to modify nCharOfs in the next paragraphs */
182 ME_PropagateCharOffset(next_para, end_len);
183 editor->nParagraphs++;
188 /* join tp with tp->member.para.next_para, keeping tp's style; this
189 * is consistent with the original */
190 ME_DisplayItem *ME_JoinParagraphs(ME_TextEditor *editor, ME_DisplayItem *tp)
192 ME_DisplayItem *pNext, *pFirstRunInNext, *pRun, *pTmp;
194 ME_UndoItem *undo = NULL;
195 int end_len = (editor->bEmulateVersion10 ? 2 : 1);
197 assert(tp->type == diParagraph);
198 assert(tp->member.para.next_para);
199 assert(tp->member.para.next_para->type == diParagraph);
201 pNext = tp->member.para.next_para;
204 /* null char format operation to store the original char format for the ENDPARA run */
206 ME_InitCharFormat2W(&fmt);
207 ME_SetCharFormat(editor, pNext->member.para.nCharOfs - end_len, end_len, &fmt);
209 undo = ME_AddUndoItem(editor, diUndoSplitParagraph, NULL);
212 undo->nStart = pNext->member.para.nCharOfs - end_len;
213 assert(pNext->member.para.pFmt->cbSize == sizeof(PARAFORMAT2));
214 CopyMemory(undo->di.member.para.pFmt, pNext->member.para.pFmt, sizeof(PARAFORMAT2));
217 shift = pNext->member.para.nCharOfs - tp->member.para.nCharOfs - end_len;
219 pRun = ME_FindItemBack(pNext, diRunOrParagraph);
220 pFirstRunInNext = ME_FindItemFwd(pNext, diRunOrParagraph);
223 assert(pRun->type == diRun);
224 assert(pRun->member.run.nFlags & MERF_ENDPARA);
225 assert(pFirstRunInNext->type == diRun);
227 /* if some cursor points at end of paragraph, make it point to the first
228 run of the next joined paragraph */
229 for (i=0; i<editor->nCursors; i++) {
230 if (editor->pCursors[i].pRun == pRun) {
231 editor->pCursors[i].pRun = pFirstRunInNext;
232 editor->pCursors[i].nOffset = 0;
238 pTmp = ME_FindItemFwd(pTmp, diRunOrParagraphOrEnd);
239 if (pTmp->type != diRun)
241 TRACE("shifting \"%s\" by %d (previous %d)\n", debugstr_w(pTmp->member.run.strText->szData), shift, pTmp->member.run.nCharOfs);
242 pTmp->member.run.nCharOfs += shift;
246 ME_DestroyDisplayItem(pRun);
248 tp->member.para.next_para = pNext->member.para.next_para;
249 pNext->member.para.next_para->member.para.prev_para = tp;
251 ME_DestroyDisplayItem(pNext);
253 ME_PropagateCharOffset(tp->member.para.next_para, -end_len);
255 ME_CheckCharOffsets(editor);
257 editor->nParagraphs--;
258 tp->member.para.nFlags |= MEPF_REWRAP;
262 ME_DisplayItem *ME_GetParagraph(ME_DisplayItem *item) {
263 return ME_FindItemBackOrHere(item, diParagraph);
266 static void ME_DumpStyleEffect(char **p, const char *name, PARAFORMAT2 *fmt, int mask)
268 *p += sprintf(*p, "%-22s%s\n", name, (fmt->dwMask & mask) ? ((fmt->wEffects & mask) ? "yes" : "no") : "N/A");
271 void ME_DumpParaStyleToBuf(PARAFORMAT2 *pFmt, char buf[2048])
273 /* FIXME only PARAFORMAT styles implemented */
276 p += sprintf(p, "Alignment: %s\n",
277 !(pFmt->dwMask & PFM_ALIGNMENT) ? "N/A" :
278 ((pFmt->wAlignment == PFA_LEFT) ? "left" :
279 ((pFmt->wAlignment == PFA_RIGHT) ? "right" :
280 ((pFmt->wAlignment == PFA_CENTER) ? "center" :
281 /*((pFmt->wAlignment == PFA_JUSTIFY) ? "justify" : "incorrect")*/
284 if (pFmt->dwMask & PFM_OFFSET)
285 p += sprintf(p, "Offset: %d\n", (int)pFmt->dxOffset);
287 p += sprintf(p, "Offset: N/A\n");
289 if (pFmt->dwMask & PFM_OFFSETINDENT)
290 p += sprintf(p, "Offset indent: %d\n", (int)pFmt->dxStartIndent);
292 p += sprintf(p, "Offset indent: N/A\n");
294 if (pFmt->dwMask & PFM_STARTINDENT)
295 p += sprintf(p, "Start indent: %d\n", (int)pFmt->dxStartIndent);
297 p += sprintf(p, "Start indent: N/A\n");
299 if (pFmt->dwMask & PFM_RIGHTINDENT)
300 p += sprintf(p, "Right indent: %d\n", (int)pFmt->dxRightIndent);
302 p += sprintf(p, "Right indent: N/A\n");
304 ME_DumpStyleEffect(&p, "Page break before:", pFmt, PFM_PAGEBREAKBEFORE);
307 void ME_SetParaFormat(ME_TextEditor *editor, ME_DisplayItem *para, PARAFORMAT2 *pFmt)
310 assert(sizeof(*para->member.para.pFmt) == sizeof(PARAFORMAT2));
311 ME_AddUndoItem(editor, diUndoSetParagraphFormat, para);
313 CopyMemory(©, para->member.para.pFmt, sizeof(PARAFORMAT2));
315 if (pFmt->dwMask & PFM_ALIGNMENT)
316 para->member.para.pFmt->wAlignment = pFmt->wAlignment;
317 if (pFmt->dwMask & PFM_STARTINDENT)
318 para->member.para.pFmt->dxStartIndent = pFmt->dxStartIndent;
319 if (pFmt->dwMask & PFM_OFFSET)
320 para->member.para.pFmt->dxOffset = pFmt->dxOffset;
321 if (pFmt->dwMask & PFM_OFFSETINDENT)
322 para->member.para.pFmt->dxStartIndent += pFmt->dxStartIndent;
324 if (pFmt->dwMask & PFM_TABSTOPS)
326 para->member.para.pFmt->cTabCount = pFmt->cTabCount;
327 memcpy(para->member.para.pFmt->rgxTabs, pFmt->rgxTabs, pFmt->cTabCount*sizeof(int));
330 /* FIXME to be continued (indents, bulleting and such) */
332 if (memcmp(©, para->member.para.pFmt, sizeof(PARAFORMAT2)))
333 para->member.para.nFlags |= MEPF_REWRAP;
338 ME_GetSelectionParas(ME_TextEditor *editor, ME_DisplayItem **para, ME_DisplayItem **para_end)
340 ME_Cursor *pEndCursor = &editor->pCursors[1];
342 *para = ME_GetParagraph(editor->pCursors[0].pRun);
343 *para_end = ME_GetParagraph(editor->pCursors[1].pRun);
344 if ((*para_end)->member.para.nCharOfs < (*para)->member.para.nCharOfs) {
345 ME_DisplayItem *tmp = *para;
349 pEndCursor = &editor->pCursors[0];
352 /* selection consists of chars from nFrom up to nTo-1 */
353 if ((*para_end)->member.para.nCharOfs > (*para)->member.para.nCharOfs) {
354 if (!pEndCursor->nOffset) {
355 *para_end = ME_GetParagraph(ME_FindItemBack(pEndCursor->pRun, diRun));
361 void ME_SetSelectionParaFormat(ME_TextEditor *editor, PARAFORMAT2 *pFmt)
363 ME_DisplayItem *para, *para_end;
365 ME_GetSelectionParas(editor, ¶, ¶_end);
368 ME_SetParaFormat(editor, para, pFmt);
369 if (para == para_end)
371 para = para->member.para.next_para;
375 void ME_GetParaFormat(ME_TextEditor *editor, ME_DisplayItem *para, PARAFORMAT2 *pFmt)
377 if (pFmt->cbSize >= sizeof(PARAFORMAT2))
379 CopyMemory(pFmt, para->member.para.pFmt, sizeof(PARAFORMAT2));
382 CopyMemory(pFmt, para->member.para.pFmt, pFmt->cbSize);
385 void ME_GetSelectionParaFormat(ME_TextEditor *editor, PARAFORMAT2 *pFmt)
387 ME_DisplayItem *para, *para_end;
390 ME_GetSelectionParas(editor, ¶, ¶_end);
392 ME_GetParaFormat(editor, para, pFmt);
393 if (para == para_end) return;
396 ZeroMemory(&tmp, sizeof(tmp));
397 tmp.cbSize = sizeof(tmp);
398 ME_GetParaFormat(editor, para, &tmp);
400 assert(tmp.dwMask & PFM_ALIGNMENT);
401 if (pFmt->wAlignment != tmp.wAlignment)
402 pFmt->dwMask &= ~PFM_ALIGNMENT;
404 assert(tmp.dwMask & PFM_STARTINDENT);
405 if (pFmt->dxStartIndent != tmp.dxStartIndent)
406 pFmt->dwMask &= ~PFM_STARTINDENT;
408 assert(tmp.dwMask & PFM_OFFSET);
409 if (pFmt->dxOffset != tmp.dxOffset)
410 pFmt->dwMask &= ~PFM_OFFSET;
412 assert(tmp.dwMask & PFM_TABSTOPS);
413 if (pFmt->dwMask & PFM_TABSTOPS) {
414 if (pFmt->cTabCount != tmp.cTabCount)
415 pFmt->dwMask &= ~PFM_TABSTOPS;
417 if (memcmp(pFmt->rgxTabs, tmp.rgxTabs, tmp.cTabCount*sizeof(int)))
418 pFmt->dwMask &= ~PFM_TABSTOPS;
421 if (para == para_end)
423 para = para->member.para.next_para;