?  search:
summary | log | graphiclog1 | graphiclog2 | commit | commitdiff | tree | refs | edit | fork
blame | history | raw | HEAD
riched20: Sign-compare warnings fix.
[wine/wine64.git] / dlls / riched20 / paint.c
blob40761db64b05e736e861e31a3692f08e2aecb5fd
1 /*
2 * RichEdit - painting functions
3 *
4 * Copyright 2004 by Krzysztof Foltman
5 * Copyright 2005 by Phil Krylov
6 *
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.
11 *
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.
16 *
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
20 */
21
22 #include "editor.h"
23
24 WINE_DEFAULT_DEBUG_CHANNEL(richedit);
25
26 void ME_PaintContent(ME_TextEditor *editor, HDC hDC, BOOL bOnlyNew, const RECT *rcUpdate) {
27 ME_DisplayItem *item;
28 ME_Context c;
29 int yoffset;
30
31 editor->nSequence++;
32 yoffset = ME_GetYScrollPos(editor);
33 ME_InitContext(&c, editor, hDC);
34 SetBkMode(hDC, TRANSPARENT);
35 ME_MoveCaret(editor); /* Calls ME_WrapMarkedParagraphs */
36 item = editor->pBuffer->pFirst->next;
37 c.pt.y -= yoffset;
38 while(item != editor->pBuffer->pLast) {
39 int yTextOffset = 0;
40 int ye;
41 assert(item->type == diParagraph);
42 if (item->member.para.pCell
43 != item->member.para.next_para->member.para.pCell)
44 {
45 ME_Cell *cell = NULL;
46 cell = &ME_FindItemBack(item->member.para.next_para, diCell)->member.cell;
47 ye = cell->pt.y + cell->nHeight - yoffset;
48 } else {
49 ye = c.pt.y + item->member.para.nHeight;
50 }
51 if (!(item->member.para.nFlags & MEPF_ROWEND) &&
52 item->member.para.pCell != item->member.para.prev_para->member.para.pCell)
53 {
54 ME_DisplayItem *cell;
55 if (item->member.para.prev_para->member.para.nFlags & MEPF_ROWSTART)
56 cell = item->member.para.pCell;
57 else
58 cell = item->member.para.prev_para->member.para.pCell;
59 assert(cell);
60 /* the border shifts the text down */
61 yTextOffset = cell->member.cell.yTextOffset;
62 ye += yTextOffset;
63 }
64 if (!bOnlyNew || (item->member.para.nFlags & MEPF_REPAINT))
65 {
66 BOOL bPaint = (rcUpdate == NULL);
67 if (rcUpdate)
68 bPaint = c.pt.y<rcUpdate->bottom && ye>rcUpdate->top;
69 if (bPaint)
70 {
71 c.pt.y += yTextOffset;
72 ME_DrawParagraph(&c, item);
73 if (!rcUpdate || (rcUpdate->top<=c.pt.y-yTextOffset && rcUpdate->bottom>=ye))
74 item->member.para.nFlags &= ~MEPF_REPAINT;
75 }
76 }
77 if (item->member.para.pCell)
78 {
79 ME_Cell *cell = &item->member.para.pCell->member.cell;
80 ME_DisplayItem *next_para = item->member.para.next_para;
81 c.pt.x = cell->pt.x + cell->nWidth;
82 if (item->member.para.pCell == next_para->member.para.pCell &&
83 !(next_para->member.para.nFlags & (MEPF_ROWSTART|MEPF_ROWEND)))
84 {
85 c.pt.y = ye;
86 } else {
87 if (next_para->member.para.nFlags & MEPF_ROWSTART)
88 {
89 cell = &ME_FindItemFwd(next_para, diCell)->member.cell;
90 }
91 else if (next_para->member.para.nFlags & MEPF_ROWEND)
92 {
93 cell = &cell->next_cell->member.cell;
94 }
95 else
96 {
97 cell = &next_para->member.para.pCell->member.cell;
98 }
99 c.pt.y = cell->pt.y - yoffset;
100 }
101 } else if (!(item->member.para.nFlags & MEPF_ROWSTART)) {
102 c.pt.y = ye;
103 }
104 item = item->member.para.next_para;
105 }
106 if (c.pt.y<c.rcView.bottom) {
107 RECT rc;
108 int xs = c.rcView.left, xe = c.rcView.right;
109 int ys = c.pt.y, ye = c.rcView.bottom;
110
111 if (bOnlyNew)
112 {
113 int y1 = editor->nTotalLength-yoffset, y2 = editor->nLastTotalLength-yoffset;
114 if (y1<y2)
115 ys = y1, ye = y2+1;
116 else
117 ys = ye;
118 }
119
120 if (rcUpdate && ys!=ye)
121 {
122 xs = rcUpdate->left, xe = rcUpdate->right;
123 if (rcUpdate->top > ys)
124 ys = rcUpdate->top;
125 if (rcUpdate->bottom < ye)
126 ye = rcUpdate->bottom;
127 }
128
129 if (ye>ys) {
130 rc.left = xs;
131 rc.top = ys;
132 rc.right = xe;
133 rc.bottom = ye;
134 FillRect(hDC, &rc, c.editor->hbrBackground);
135 }
136 }
137 if (editor->nTotalLength != editor->nLastTotalLength)
138 ME_SendRequestResize(editor, FALSE);
139 editor->nLastTotalLength = editor->nTotalLength;
140 ME_DestroyContext(&c, NULL);
141 }
142
143 void ME_Repaint(ME_TextEditor *editor)
144 {
145 if (ME_WrapMarkedParagraphs(editor))
146 {
147 ME_UpdateScrollBar(editor);
148 FIXME("ME_Repaint had to call ME_WrapMarkedParagraphs\n");
149 }
150 if (!IsWindowVisible(editor->hWnd))
151 return;
152 if (!editor->bEmulateVersion10 || (editor->nEventMask & ENM_UPDATE))
153 ME_SendOldNotify(editor, EN_UPDATE);
154 UpdateWindow(editor->hWnd);
155 }
156
157 void ME_UpdateRepaint(ME_TextEditor *editor)
158 {
159 /* Should be called whenever the contents of the control have changed */
160 ME_Cursor *pCursor;
161 BOOL wrappedParagraphs;
162
163 wrappedParagraphs = ME_WrapMarkedParagraphs(editor);
164 if (wrappedParagraphs)
165 ME_UpdateScrollBar(editor);
166
167 /* Ensure that the cursor is visible */
168 pCursor = &editor->pCursors[0];
169 ME_EnsureVisible(editor, pCursor->pRun);
170
171 /* send EN_CHANGE if the event mask asks for it */
172 if(editor->nEventMask & ENM_CHANGE)
173 {
174 editor->nEventMask &= ~ENM_CHANGE;
175 ME_SendOldNotify(editor, EN_CHANGE);
176 editor->nEventMask |= ENM_CHANGE;
177 }
178 ME_Repaint(editor);
179 ME_SendSelChange(editor);
180 }
181
182 void
183 ME_RewrapRepaint(ME_TextEditor *editor)
184 {
185 /* RewrapRepaint should be called whenever the control has changed in
186 * looks, but not content. Like resizing. */
187
188 ME_MarkAllForWrapping(editor);
189 ME_WrapMarkedParagraphs(editor);
190 ME_UpdateScrollBar(editor);
191 ME_Repaint(editor);
192 }
193
194 int ME_twips2pointsX(ME_Context *c, int x)
195 {
196 if (c->editor->nZoomNumerator == 0)
197 return x * c->dpi.cx / 1440;
198 else
199 return x * c->dpi.cx * c->editor->nZoomNumerator / 1440 / c->editor->nZoomDenominator;
200 }
201
202 int ME_twips2pointsY(ME_Context *c, int y)
203 {
204 if (c->editor->nZoomNumerator == 0)
205 return y * c->dpi.cy / 1440;
206 else
207 return y * c->dpi.cy * c->editor->nZoomNumerator / 1440 / c->editor->nZoomDenominator;
208 }
209
210 static void ME_HighlightSpace(ME_Context *c, int x, int y, LPCWSTR szText,
211 int nChars, ME_Style *s, int width,
212 int nSelFrom, int nSelTo, int ymin, int cy)
213 {
214 HDC hDC = c->hDC;
215 HGDIOBJ hOldFont = NULL;
216 SIZE sz;
217 int selWidth;
218 /* Only highlight if there is a selection in the run and when
219 * EM_HIDESELECTION is not being used to hide the selection. */
220 if (nSelFrom >= nChars || nSelTo < 0 || nSelFrom >= nSelTo
221 || c->editor->bHideSelection)
222 return;
223 hOldFont = ME_SelectStyleFont(c, s);
224 if (width <= 0)
225 {
226 GetTextExtentPoint32W(hDC, szText, nChars, &sz);
227 width = sz.cx;
228 }
229 if (nSelFrom < 0) nSelFrom = 0;
230 if (nSelTo > nChars) nSelTo = nChars;
231 GetTextExtentPoint32W(hDC, szText, nSelFrom, &sz);
232 x += sz.cx;
233 if (nSelTo != nChars)
234 {
235 GetTextExtentPoint32W(hDC, szText+nSelFrom, nSelTo-nSelFrom, &sz);
236 selWidth = sz.cx;
237 } else {
238 selWidth = width - sz.cx;
239 }
240 ME_UnselectStyleFont(c, s, hOldFont);
241
242 if (c->editor->bEmulateVersion10)
243 PatBlt(hDC, x, ymin, selWidth, cy, DSTINVERT);
244 else
245 {
246 RECT rect;
247 HBRUSH hBrush;
248 rect.left = x;
249 rect.top = ymin;
250 rect.right = x + selWidth;
251 rect.bottom = ymin + cy;
252 hBrush = CreateSolidBrush(GetSysColor(COLOR_HIGHLIGHT));
253 FillRect(hDC, &rect, hBrush);
254 DeleteObject(hBrush);
255 }
256 }
257
258 static void ME_DrawTextWithStyle(ME_Context *c, int x, int y, LPCWSTR szText,
259 int nChars, ME_Style *s, int width,
260 int nSelFrom, int nSelTo, int ymin, int cy)
261 {
262 HDC hDC = c->hDC;
263 HGDIOBJ hOldFont;
264 COLORREF rgbOld;
265 int yOffset = 0, yTwipsOffset = 0;
266 SIZE sz;
267 COLORREF rgb;
268 HPEN hPen = NULL, hOldPen = NULL;
269 BOOL bHighlightedText = (nSelFrom < nChars && nSelTo >= 0
270 && nSelFrom < nSelTo && !c->editor->bHideSelection);
271 int xSelStart = x, xSelEnd = x;
272 int *lpDx = NULL;
273 /* lpDx is only needed for tabs to make sure the underline done automatically
274 * by the font extends to the end of the tab. Tabs are always stored as
275 * a single character run, so we can handle this case separately, since
276 * otherwise lpDx would need to specify the lengths of each character. */
277 if (width && nChars == 1)
278 lpDx = &width; /* Make sure underline for tab extends across tab space */
279
280 hOldFont = ME_SelectStyleFont(c, s);
281 if ((s->fmt.dwMask & s->fmt.dwEffects) & CFM_OFFSET) {
282 yTwipsOffset = s->fmt.yOffset;
283 }
284 if ((s->fmt.dwMask & s->fmt.dwEffects) & (CFM_SUPERSCRIPT | CFM_SUBSCRIPT)) {
285 if (s->fmt.dwEffects & CFE_SUPERSCRIPT) yTwipsOffset = s->fmt.yHeight/3;
286 if (s->fmt.dwEffects & CFE_SUBSCRIPT) yTwipsOffset = -s->fmt.yHeight/12;
287 }
288 if (yTwipsOffset)
289 yOffset = ME_twips2pointsY(c, yTwipsOffset);
290
291 if ((s->fmt.dwMask & CFM_LINK) && (s->fmt.dwEffects & CFE_LINK))
292 rgb = RGB(0,0,255);
293 else if ((s->fmt.dwMask & CFM_COLOR) && (s->fmt.dwEffects & CFE_AUTOCOLOR))
294 rgb = GetSysColor(COLOR_WINDOWTEXT);
295 else
296 rgb = s->fmt.crTextColor;
297
298 /* Determine the area that is selected in the run. */
299 GetTextExtentPoint32W(hDC, szText, nChars, &sz);
300 /* Treat width as an optional parameter. We can get the width from the
301 * text extent of the string if it isn't specified. */
302 if (!width) width = sz.cx;
303 if (bHighlightedText)
304 {
305 if (nSelFrom <= 0)
306 {
307 nSelFrom = 0;
308 }
309 else
310 {
311 GetTextExtentPoint32W(hDC, szText, nSelFrom, &sz);
312 xSelStart = x + sz.cx;
313 }
314 if (nSelTo >= nChars)
315 {
316 nSelTo = nChars;
317 xSelEnd = x + width;
318 }
319 else
320 {
321 GetTextExtentPoint32W(hDC, szText+nSelFrom, nSelTo-nSelFrom, &sz);
322 xSelEnd = xSelStart + sz.cx;
323 }
324 }
325
326 /* Choose the pen type for underlining the text. */
327 if (s->fmt.dwMask & CFM_UNDERLINETYPE)
328 {
329 switch (s->fmt.bUnderlineType)
330 {
331 case CFU_UNDERLINE:
332 case CFU_UNDERLINEWORD: /* native seems to map it to simple underline (MSDN) */
333 case CFU_UNDERLINEDOUBLE: /* native seems to map it to simple underline (MSDN) */
334 hPen = CreatePen(PS_SOLID, 1, rgb);
335 break;
336 case CFU_UNDERLINEDOTTED:
337 hPen = CreatePen(PS_DOT, 1, rgb);
338 break;
339 default:
340 WINE_FIXME("Unknown underline type (%u)\n", s->fmt.bUnderlineType);
341 /* fall through */
342 case CFU_CF1UNDERLINE: /* this type is supported in the font, do nothing */
343 case CFU_UNDERLINENONE:
344 hPen = NULL;
345 break;
346 }
347 if (hPen)
348 {
349 hOldPen = SelectObject(hDC, hPen);
350 }
351 }
352
353 rgbOld = SetTextColor(hDC, rgb);
354 if (bHighlightedText && !c->editor->bEmulateVersion10)
355 {
356 COLORREF rgbBackOld;
357 RECT dim;
358 /* FIXME: should use textmetrics info for Descent info */
359 if (hPen)
360 MoveToEx(hDC, x, y - yOffset + 1, NULL);
361 if (xSelStart > x)
362 {
363 ExtTextOutW(hDC, x, y-yOffset, 0, NULL, szText, nSelFrom, NULL);
364 if (hPen)
365 LineTo(hDC, xSelStart, y - yOffset + 1);
366 }
367 dim.top = ymin;
368 dim.bottom = ymin + cy;
369 dim.left = xSelStart;
370 dim.right = xSelEnd;
371 SetTextColor(hDC, GetSysColor(COLOR_HIGHLIGHTTEXT));
372 rgbBackOld = SetBkColor(hDC, GetSysColor(COLOR_HIGHLIGHT));
373 ExtTextOutW(hDC, xSelStart, y-yOffset, ETO_OPAQUE, &dim,
374 szText+nSelFrom, nSelTo-nSelFrom, lpDx);
375 if (hPen)
376 LineTo(hDC, xSelEnd, y - yOffset + 1);
377 SetBkColor(hDC, rgbBackOld);
378 if (xSelEnd < x + width)
379 {
380 SetTextColor(hDC, rgb);
381 ExtTextOutW(hDC, xSelEnd, y-yOffset, 0, NULL, szText+nSelTo,
382 nChars-nSelTo, NULL);
383 if (hPen)
384 LineTo(hDC, x + width, y - yOffset + 1);
385 }
386 }
387 else
388 {
389 ExtTextOutW(hDC, x, y-yOffset, 0, NULL, szText, nChars, lpDx);
390
391 /* FIXME: should use textmetrics info for Descent info */
392 if (hPen)
393 {
394 MoveToEx(hDC, x, y - yOffset + 1, NULL);
395 LineTo(hDC, x + width, y - yOffset + 1);
396 }
397
398 if (bHighlightedText) /* v1.0 inverts the selection */
399 {
400 PatBlt(hDC, xSelStart, ymin, xSelEnd-xSelStart, cy, DSTINVERT);
401 }
402 }
403
404 if (hPen)
405 {
406 SelectObject(hDC, hOldPen);
407 DeleteObject(hPen);
408 }
409 SetTextColor(hDC, rgbOld);
410 ME_UnselectStyleFont(c, s, hOldFont);
411 }
412
413 static void ME_DebugWrite(HDC hDC, const POINT *pt, LPCWSTR szText) {
414 int align = SetTextAlign(hDC, TA_LEFT|TA_TOP);
415 HGDIOBJ hFont = SelectObject(hDC, GetStockObject(DEFAULT_GUI_FONT));
416 COLORREF color = SetTextColor(hDC, RGB(128,128,128));
417 TextOutW(hDC, pt->x, pt->y, szText, lstrlenW(szText));
418 SelectObject(hDC, hFont);
419 SetTextAlign(hDC, align);
420 SetTextColor(hDC, color);
421 }
422
423 static void ME_DrawRun(ME_Context *c, int x, int y, ME_DisplayItem *rundi, ME_Paragraph *para)
424 {
425 ME_Run *run = &rundi->member.run;
426 ME_DisplayItem *start;
427 int runofs = run->nCharOfs+para->nCharOfs;
428 int nSelFrom, nSelTo;
429 const WCHAR wszSpace[] = {' ', 0};
430
431 if (run->nFlags & MERF_HIDDEN)
432 return;
433
434 start = ME_FindItemBack(rundi, diStartRow);
435 ME_GetSelection(c->editor, &nSelFrom, &nSelTo);
436
437 /* Draw selected end-of-paragraph mark */
438 /* you can always comment it out if you need visible paragraph marks */
439 if (run->nFlags & MERF_ENDPARA)
440 {
441 if (runofs >= nSelFrom && runofs < nSelTo)
442 {
443 ME_HighlightSpace(c, x, y, wszSpace, 1, run->style, 0, 0, 1,
444 c->pt.y + start->member.row.pt.y,
445 start->member.row.nHeight);
446 }
447 return;
448 }
449
450 if (run->nFlags & (MERF_TAB | MERF_ENDCELL))
451 {
452 /* wszSpace is used instead of the tab character because otherwise
453 * an unwanted symbol can be inserted instead. */
454 ME_DrawTextWithStyle(c, x, y, wszSpace, 1, run->style, run->nWidth,
455 nSelFrom-runofs,nSelTo-runofs,
456 c->pt.y + start->member.row.pt.y,
457 start->member.row.nHeight);
458 return;
459 }
460
461 if (run->nFlags & MERF_GRAPHICS)
462 ME_DrawOLE(c, x, y, run, para, (runofs >= nSelFrom) && (runofs < nSelTo));
463 else
464 {
465 if (c->editor->cPasswordMask)
466 {
467 ME_String *szMasked = ME_MakeStringR(c->editor->cPasswordMask,ME_StrVLen(run->strText));
468 ME_DrawTextWithStyle(c, x, y,
469 szMasked->szData, ME_StrVLen(szMasked), run->style, run->nWidth,
470 nSelFrom-runofs,nSelTo-runofs, c->pt.y+start->member.row.pt.y, start->member.row.nHeight);
471 ME_DestroyString(szMasked);
472 }
473 else
474 ME_DrawTextWithStyle(c, x, y,
475 run->strText->szData, ME_StrVLen(run->strText), run->style, run->nWidth,
476 nSelFrom-runofs,nSelTo-runofs, c->pt.y+start->member.row.pt.y, start->member.row.nHeight);
477 }
478 }
479
480 static const struct {unsigned width_num : 4, width_den : 4, pen_style : 4, dble : 1;} border_details[] = {
481 /* none */ {0, 1, PS_SOLID, FALSE},
482 /* 3/4 */ {3, 4, PS_SOLID, FALSE},
483 /* 1 1/2 */ {3, 2, PS_SOLID, FALSE},
484 /* 2 1/4 */ {9, 4, PS_SOLID, FALSE},
485 /* 3 */ {3, 1, PS_SOLID, FALSE},
486 /* 4 1/2 */ {9, 2, PS_SOLID, FALSE},
487 /* 6 */ {6, 1, PS_SOLID, FALSE},
488 /* 3/4 double */ {3, 4, PS_SOLID, TRUE},
489 /* 1 1/2 double */ {3, 2, PS_SOLID, TRUE},
490 /* 2 1/4 double */ {9, 4, PS_SOLID, TRUE},
491 /* 3/4 gray */ {3, 4, PS_DOT /* FIXME */, FALSE},
492 /* 1 1/2 dashed */ {3, 2, PS_DASH, FALSE},
493 };
494
495 static const COLORREF pen_colors[16] = {
496 /* Black */ RGB(0x00, 0x00, 0x00), /* Blue */ RGB(0x00, 0x00, 0xFF),
497 /* Cyan */ RGB(0x00, 0xFF, 0xFF), /* Green */ RGB(0x00, 0xFF, 0x00),
498 /* Magenta */ RGB(0xFF, 0x00, 0xFF), /* Red */ RGB(0xFF, 0x00, 0x00),
499 /* Yellow */ RGB(0xFF, 0xFF, 0x00), /* White */ RGB(0xFF, 0xFF, 0xFF),
500 /* Dark blue */ RGB(0x00, 0x00, 0x80), /* Dark cyan */ RGB(0x00, 0x80, 0x80),
501 /* Dark green */ RGB(0x00, 0x80, 0x80), /* Dark magenta */ RGB(0x80, 0x00, 0x80),
502 /* Dark red */ RGB(0x80, 0x00, 0x00), /* Dark yellow */ RGB(0x80, 0x80, 0x00),
503 /* Dark gray */ RGB(0x80, 0x80, 0x80), /* Light gray */ RGB(0xc0, 0xc0, 0xc0),
504 };
505
506 static int ME_GetBorderPenWidth(ME_TextEditor* editor, int idx)
507 {
508 int width;
509
510 if (editor->nZoomNumerator == 0)
511 {
512 width = border_details[idx].width_num + border_details[idx].width_den / 2;
513 width /= border_details[idx].width_den;
514 }
515 else
516 {
517 width = border_details[idx].width_num * editor->nZoomNumerator;
518 width += border_details[idx].width_den * editor->nZoomNumerator / 2;
519 width /= border_details[idx].width_den * editor->nZoomDenominator;
520 }
521 return width;
522 }
523
524 int ME_GetParaBorderWidth(ME_TextEditor* editor, int flags)
525 {
526 int idx = (flags >> 8) & 0xF;
527 int width;
528
529 if (idx >= sizeof(border_details) / sizeof(border_details[0]))
530 {
531 FIXME("Unsupported border value %d\n", idx);
532 return 0;
533 }
534 width = ME_GetBorderPenWidth(editor, idx);
535 if (border_details[idx].dble) width = width * 2 + 1;
536 return width;
537 }
538
539 int ME_GetParaLineSpace(ME_Context* c, ME_Paragraph* para)
540 {
541 int sp = 0, ls = 0;
542 if (!(para->pFmt->dwMask & PFM_LINESPACING)) return 0;
543
544 /* FIXME: how to compute simply the line space in ls ??? */
545 /* FIXME: does line spacing include the line itself ??? */
546 switch (para->pFmt->bLineSpacingRule)
547 {
548 case 0: sp = ls; break;
549 case 1: sp = (3 * ls) / 2; break;
550 case 2: sp = 2 * ls; break;
551 case 3: sp = ME_twips2pointsY(c, para->pFmt->dyLineSpacing); if (sp < ls) sp = ls; break;
552 case 4: sp = ME_twips2pointsY(c, para->pFmt->dyLineSpacing); break;
553 case 5: sp = para->pFmt->dyLineSpacing / 20; break;
554 default: FIXME("Unsupported spacing rule value %d\n", para->pFmt->bLineSpacingRule);
555 }
556 if (c->editor->nZoomNumerator == 0)
557 return sp;
558 else
559 return sp * c->editor->nZoomNumerator / c->editor->nZoomDenominator;
560 }
561
562 static void ME_DrawParaDecoration(ME_Context* c, ME_Paragraph* para, int y, RECT* bounds)
563 {
564 int idx, border_width, top_border, bottom_border;
565 RECT rc;
566 BOOL hasParaBorder;
567
568 SetRectEmpty(bounds);
569 if (!(para->pFmt->dwMask & (PFM_BORDER | PFM_SPACEBEFORE | PFM_SPACEAFTER))) return;
570
571 border_width = top_border = bottom_border = 0;
572 idx = (para->pFmt->wBorders >> 8) & 0xF;
573 hasParaBorder = (!(c->editor->bEmulateVersion10 &&
574 para->pFmt->dwMask & PFM_TABLE &&
575 para->pFmt->wEffects & PFE_TABLE) &&
576 (para->pFmt->dwMask & PFM_BORDER) &&
577 idx != 0 &&
578 (para->pFmt->wBorders & 0xF));
579 if (hasParaBorder)
580 {
581 /* FIXME: wBorders is not stored as MSDN says in v1.0 - 4.1 of richedit
582 * controls. It actually stores the paragraph or row border style. Although
583 * the value isn't used for drawing, it is used for streaming out rich text.
584 *
585 * wBorders stores the border style for each side (top, left, bottom, right)
586 * using nibble (4 bits) to store each border style. The rich text format
587 * control words, and their associated value are the following:
588 * \brdrdash 0
589 * \brdrdashsm 1
590 * \brdrdb 2
591 * \brdrdot 3
592 * \brdrhair 4
593 * \brdrs 5
594 * \brdrth 6
595 * \brdrtriple 7
596 *
597 * The order of the sides stored actually differs from v1.0 to 3.0 and v4.1.
598 * The mask corresponding to each side for the version are the following:
599 * mask v1.0-3.0 v4.1
600 * 0x000F top left
601 * 0x00F0 left top
602 * 0x0F00 bottom right
603 * 0xF000 right bottom
604 */
605 if (para->pFmt->wBorders & 0x00B0)
606 FIXME("Unsupported border flags %x\n", para->pFmt->wBorders);
607 border_width = ME_GetParaBorderWidth(c->editor, para->pFmt->wBorders);
608 if (para->pFmt->wBorders & 4) top_border = border_width;
609 if (para->pFmt->wBorders & 8) bottom_border = border_width;
610 }
611
612 if (para->pFmt->dwMask & PFM_SPACEBEFORE)
613 {
614 rc.left = c->rcView.left;
615 rc.right = c->rcView.right;
616 rc.top = y;
617 bounds->top = ME_twips2pointsY(c, para->pFmt->dySpaceBefore);
618 rc.bottom = y + bounds->top + top_border;
619 FillRect(c->hDC, &rc, c->editor->hbrBackground);
620 }
621
622 if (para->pFmt->dwMask & PFM_SPACEAFTER)
623 {
624 rc.left = c->rcView.left;
625 rc.right = c->rcView.right;
626 rc.bottom = y + para->nHeight;
627 bounds->bottom = ME_twips2pointsY(c, para->pFmt->dySpaceAfter);
628 rc.top = rc.bottom - bounds->bottom - bottom_border;
629 FillRect(c->hDC, &rc, c->editor->hbrBackground);
630 }
631
632 /* Native richedit doesn't support paragraph borders in v1.0 - 4.1,
633 * but might support it in later versions. */
634 if (hasParaBorder) {
635 int pen_width;
636 COLORREF pencr;
637 HPEN pen = NULL, oldpen = NULL;
638 POINT pt;
639
640 if (para->pFmt->wBorders & 64) /* autocolor */
641 pencr = GetSysColor(COLOR_WINDOWTEXT);
642 else
643 pencr = pen_colors[(para->pFmt->wBorders >> 12) & 0xF];
644
645 pen_width = ME_GetBorderPenWidth(c->editor, idx);
646 pen = CreatePen(border_details[idx].pen_style, pen_width, pencr);
647 oldpen = SelectObject(c->hDC, pen);
648 MoveToEx(c->hDC, 0, 0, &pt);
649
650 /* before & after spaces are not included in border */
651
652 /* helper to draw the double lines in case of corner */
653 #define DD(x) ((para->pFmt->wBorders & (x)) ? (pen_width + 1) : 0)
654
655 if (para->pFmt->wBorders & 1)
656 {
657 MoveToEx(c->hDC, c->rcView.left, y + bounds->top, NULL);
658 LineTo(c->hDC, c->rcView.left, y + para->nHeight - bounds->bottom);
659 if (border_details[idx].dble) {
660 rc.left = c->rcView.left + 1;
661 rc.right = rc.left + border_width;
662 rc.top = y + bounds->top;
663 rc.bottom = y + para->nHeight - bounds->bottom;
664 FillRect(c->hDC, &rc, c->editor->hbrBackground);
665 MoveToEx(c->hDC, c->rcView.left + pen_width + 1, y + bounds->top + DD(4), NULL);
666 LineTo(c->hDC, c->rcView.left + pen_width + 1, y + para->nHeight - bounds->bottom - DD(8));
667 }
668 bounds->left += border_width;
669 }
670 if (para->pFmt->wBorders & 2)
671 {
672 MoveToEx(c->hDC, c->rcView.right - 1, y + bounds->top, NULL);
673 LineTo(c->hDC, c->rcView.right - 1, y + para->nHeight - bounds->bottom);
674 if (border_details[idx].dble) {
675 rc.left = c->rcView.right - pen_width - 1;
676 rc.right = c->rcView.right - 1;
677 rc.top = y + bounds->top;
678 rc.bottom = y + para->nHeight - bounds->bottom;
679 FillRect(c->hDC, &rc, c->editor->hbrBackground);
680 MoveToEx(c->hDC, c->rcView.right - 1 - pen_width - 1, y + bounds->top + DD(4), NULL);
681 LineTo(c->hDC, c->rcView.right - 1 - pen_width - 1, y + para->nHeight - bounds->bottom - DD(8));
682 }
683 bounds->right += border_width;
684 }
685 if (para->pFmt->wBorders & 4)
686 {
687 MoveToEx(c->hDC, c->rcView.left, y + bounds->top, NULL);
688 LineTo(c->hDC, c->rcView.right, y + bounds->top);
689 if (border_details[idx].dble) {
690 MoveToEx(c->hDC, c->rcView.left + DD(1), y + bounds->top + pen_width + 1, NULL);
691 LineTo(c->hDC, c->rcView.right - DD(2), y + bounds->top + pen_width + 1);
692 }
693 bounds->top += border_width;
694 }
695 if (para->pFmt->wBorders & 8)
696 {
697 MoveToEx(c->hDC, c->rcView.left, y + para->nHeight - bounds->bottom - 1, NULL);
698 LineTo(c->hDC, c->rcView.right, y + para->nHeight - bounds->bottom - 1);
699 if (border_details[idx].dble) {
700 MoveToEx(c->hDC, c->rcView.left + DD(1), y + para->nHeight - bounds->bottom - 1 - pen_width - 1, NULL);
701 LineTo(c->hDC, c->rcView.right - DD(2), y + para->nHeight - bounds->bottom - 1 - pen_width - 1);
702 }
703 bounds->bottom += border_width;
704 }
705 #undef DD
706
707 MoveToEx(c->hDC, pt.x, pt.y, NULL);
708 SelectObject(c->hDC, oldpen);
709 DeleteObject(pen);
710 }
711 }
712
713 static void ME_DrawTableBorders(ME_Context *c, ME_DisplayItem *paragraph)
714 {
715 ME_Paragraph *para = &paragraph->member.para;
716 if (!c->editor->bEmulateVersion10) /* v4.1 */
717 {
718 if (para->pCell)
719 {
720 RECT rc;
721 ME_Cell *cell = &para->pCell->member.cell;
722 ME_DisplayItem *paraAfterRow;
723 HPEN pen, oldPen;
724 LOGBRUSH logBrush;
725 HBRUSH brush;
726 COLORREF color;
727 POINT oldPt;
728 int width;
729 BOOL atTop = (para->pCell != para->prev_para->member.para.pCell);
730 BOOL atBottom = (para->pCell != para->next_para->member.para.pCell);
731 int top = (atTop ? cell->pt.y : para->pt.y) - ME_GetYScrollPos(c->editor);
732 int bottom = (atBottom ?
733 cell->pt.y + cell->nHeight - ME_GetYScrollPos(c->editor):
734 top + para->nHeight + (atTop ? cell->yTextOffset : 0));
735 rc.left = cell->pt.x;
736 rc.right = rc.left + cell->nWidth;
737 if (atTop) {
738 /* Erase gap before text if not all borders are the same height. */
739 width = max(ME_twips2pointsY(c, cell->border.top.width), 1);
740 rc.top = top + width;
741 width = cell->yTextOffset - width;
742 rc.bottom = rc.top + width;
743 if (width) {
744 FillRect(c->hDC, &rc, c->editor->hbrBackground);
745 }
746 }
747 /* Draw cell borders.
748 * The borders borders are draw in is left, top, bottom, right in order
749 * to be consistent with native richedit. This is noticeable from the
750 * overlap of borders of different colours. */
751 if (!(para->nFlags & MEPF_ROWEND)) {
752 rc.top = top;
753 rc.bottom = bottom;
754 if (cell->border.left.width > 0)
755 {
756 color = cell->border.left.colorRef;
757 width = max(ME_twips2pointsX(c, cell->border.left.width), 1);
758 } else {
759 color = RGB(192,192,192);
760 width = 1;
761 }
762 logBrush.lbStyle = BS_SOLID;
763 logBrush.lbColor = color;
764 logBrush.lbHatch = 0;
765 pen = ExtCreatePen(PS_GEOMETRIC|PS_SOLID|PS_ENDCAP_FLAT|PS_JOIN_MITER,
766 width, &logBrush, 0, NULL);
767 oldPen = SelectObject(c->hDC, pen);
768 MoveToEx(c->hDC, rc.left, rc.top, &oldPt);
769 LineTo(c->hDC, rc.left, rc.bottom);
770 SelectObject(c->hDC, oldPen);
771 DeleteObject(pen);
772 MoveToEx(c->hDC, oldPt.x, oldPt.y, NULL);
773 }
774
775 if (atTop) {
776 if (cell->border.top.width > 0)
777 {
778 brush = CreateSolidBrush(cell->border.top.colorRef);
779 width = max(ME_twips2pointsY(c, cell->border.top.width), 1);
780 } else {
781 brush = GetStockObject(LTGRAY_BRUSH);
782 width = 1;
783 }
784 rc.top = top;
785 rc.bottom = rc.top + width;
786 FillRect(c->hDC, &rc, brush);
787 if (cell->border.top.width > 0)
788 DeleteObject(brush);
789 }
790
791 /* Draw the bottom border if at the last paragraph in the cell, and when
792 * in the last row of the table. */
793 if (atBottom) {
794 int oldLeft = rc.left;
795 width = max(ME_twips2pointsY(c, cell->border.bottom.width), 1);
796 paraAfterRow = ME_GetTableRowEnd(paragraph)->member.para.next_para;
797 if (paraAfterRow->member.para.nFlags & MEPF_ROWSTART) {
798 ME_DisplayItem *nextEndCell;
799 nextEndCell = ME_FindItemBack(ME_GetTableRowEnd(paraAfterRow), diCell);
800 assert(nextEndCell && !nextEndCell->member.cell.next_cell);
801 rc.left = nextEndCell->member.cell.pt.x;
802 /* FIXME: Native draws FROM the bottom of the table rather than
803 * TO the bottom of the table in this case, but just doing so here
804 * will case the next row to erase the border. */
805 /*
806 rc.top = bottom;
807 rc.bottom = rc.top + width;
808 */
809 }
810 if (rc.left < rc.right) {
811 if (cell->border.bottom.width > 0) {
812 brush = CreateSolidBrush(cell->border.bottom.colorRef);
813 } else {
814 brush = GetStockObject(LTGRAY_BRUSH);
815 }
816 rc.bottom = bottom;
817 rc.top = rc.bottom - width;
818 FillRect(c->hDC, &rc, brush);
819 if (cell->border.bottom.width > 0)
820 DeleteObject(brush);
821 }
822 rc.left = oldLeft;
823 }
824
825 /* Right border only drawn if at the end of the table row. */
826 if (!cell->next_cell->member.cell.next_cell &&
827 !(para->nFlags & MEPF_ROWSTART))
828 {
829 rc.top = top;
830 rc.bottom = bottom;
831 if (cell->border.right.width > 0) {
832 color = cell->border.right.colorRef;
833 width = max(ME_twips2pointsX(c, cell->border.right.width), 1);
834 } else {
835 color = RGB(192,192,192);
836 width = 1;
837 }
838 logBrush.lbStyle = BS_SOLID;
839 logBrush.lbColor = color;
840 logBrush.lbHatch = 0;
841 pen = ExtCreatePen(PS_GEOMETRIC|PS_SOLID|PS_ENDCAP_FLAT|PS_JOIN_MITER,
842 width, &logBrush, 0, NULL);
843 oldPen = SelectObject(c->hDC, pen);
844 MoveToEx(c->hDC, rc.right - 1, rc.top, &oldPt);
845 LineTo(c->hDC, rc.right - 1, rc.bottom);
846 SelectObject(c->hDC, oldPen);
847 DeleteObject(pen);
848 MoveToEx(c->hDC, oldPt.x, oldPt.y, NULL);
849 }
850 }
851 } else { /* v1.0 - 3.0 */
852 /* Draw simple table border */
853 if (para->pFmt->dwMask & PFM_TABLE && para->pFmt->wEffects & PFE_TABLE) {
854 HPEN pen = NULL, oldpen = NULL;
855 int i, firstX, startX, endX, rowY, rowBottom, nHeight;
856 POINT oldPt;
857 PARAFORMAT2 *pNextFmt;
858
859 pen = CreatePen(PS_SOLID, 0, para->border.top.colorRef);
860 oldpen = SelectObject(c->hDC, pen);
861
862 /* Find the start relative to the text */
863 firstX = ME_FindItemFwd(paragraph, diRun)->member.run.pt.x;
864 /* Go back by the horizontal gap, which is stored in dxOffset */
865 firstX -= ME_twips2pointsX(c, para->pFmt->dxOffset);
866 /* The left edge, stored in dxStartIndent affected just the first edge */
867 startX = firstX - ME_twips2pointsX(c, para->pFmt->dxStartIndent);
868 rowY = c->pt.y;
869 if (para->pFmt->dwMask & PFM_SPACEBEFORE)
870 rowY += ME_twips2pointsY(c, para->pFmt->dySpaceBefore);
871 nHeight = ME_FindItemFwd(paragraph, diStartRow)->member.row.nHeight;
872 rowBottom = rowY + nHeight;
873
874 /* Draw horizontal lines */
875 MoveToEx(c->hDC, firstX, rowY, &oldPt);
876 i = para->pFmt->cTabCount - 1;
877 endX = startX + ME_twips2pointsX(c, para->pFmt->rgxTabs[i] & 0x00ffffff) + 1;
878 LineTo(c->hDC, endX, rowY);
879 pNextFmt = para->next_para->member.para.pFmt;
880 /* The bottom of the row only needs to be drawn if the next row is
881 * not a table. */
882 if (!(pNextFmt && pNextFmt->dwMask & PFM_TABLE && pNextFmt->wEffects &&
883 para->nRows == 1))
884 {
885 /* Decrement rowBottom to draw the bottom line within the row, and
886 * to not draw over this line when drawing the vertical lines. */
887 rowBottom--;
888 MoveToEx(c->hDC, firstX, rowBottom, NULL);
889 LineTo(c->hDC, endX, rowBottom);
890 }
891
892 /* Draw vertical lines */
893 MoveToEx(c->hDC, firstX, rowY, NULL);
894 LineTo(c->hDC, firstX, rowBottom);
895 for (i = 0; i < para->pFmt->cTabCount; i++)
896 {
897 int rightBoundary = para->pFmt->rgxTabs[i] & 0x00ffffff;
898 endX = startX + ME_twips2pointsX(c, rightBoundary);
899 MoveToEx(c->hDC, endX, rowY, NULL);
900 LineTo(c->hDC, endX, rowBottom);
901 }
902
903 MoveToEx(c->hDC, oldPt.x, oldPt.y, NULL);
904 SelectObject(c->hDC, oldpen);
905 DeleteObject(pen);
906 }
907 }
908 }
909
910 void ME_DrawParagraph(ME_Context *c, ME_DisplayItem *paragraph) {
911 int align = SetTextAlign(c->hDC, TA_BASELINE);
912 ME_DisplayItem *p;
913 ME_Run *run;
914 ME_Paragraph *para = NULL;
915 RECT rc, bounds;
916 int y = c->pt.y;
917 int height = 0, baseline = 0, no=0;
918 BOOL visible = FALSE;
919
920 c->pt.x = c->rcView.left;
921 rc.left = c->rcView.left;
922 rc.right = c->rcView.right;
923 for (p = paragraph; p!=paragraph->member.para.next_para; p = p->next) {
924 switch(p->type) {
925 case diParagraph:
926 para = &p->member.para;
927 assert(para);
928 if (para->pCell)
929 {
930 ME_Cell *cell = &para->pCell->member.cell;
931 rc.left = cell->pt.x;
932 rc.right = rc.left + cell->nWidth;
933 }
934 if (para->nFlags & MEPF_ROWSTART) {
935 ME_Cell *cell = &para->next_para->member.para.pCell->member.cell;
936 rc.right = cell->pt.x;
937 } else if (para->nFlags & MEPF_ROWEND) {
938 ME_Cell *cell = &para->prev_para->member.para.pCell->member.cell;
939 rc.left = cell->pt.x + cell->nWidth;
940 }
941 ME_DrawParaDecoration(c, para, y, &bounds);
942 y += bounds.top;
943 break;
944 case diStartRow:
945 /* we should have seen a diParagraph before */
946 assert(para);
947 y += height;
948 rc.top = y;
949 if (para->nFlags & MEPF_ROWSTART) {
950 ME_Cell *cell = &para->next_para->member.para.pCell->member.cell;
951 rc.bottom = y + cell->nHeight;
952 } else if (para->nFlags & MEPF_ROWEND) {
953 ME_Cell *cell = &para->prev_para->member.para.pCell->member.cell;
954 rc.bottom = y + cell->nHeight;
955 } else {
956 rc.bottom = y+p->member.row.nHeight;
957 }
958 visible = RectVisible(c->hDC, &rc);
959 if (visible) {
960 FillRect(c->hDC, &rc, c->editor->hbrBackground);
961 }
962 if (me_debug)
963 {
964 const WCHAR wszRowDebug[] = {'r','o','w','[','%','d',']',0};
965 WCHAR buf[128];
966 POINT pt = c->pt;
967 wsprintfW(buf, wszRowDebug, no);
968 pt.y = 12+y;
969 ME_DebugWrite(c->hDC, &pt, buf);
970 }
971
972 height = p->member.row.nHeight;
973 baseline = p->member.row.nBaseline;
974 break;
975 case diRun:
976 assert(para);
977 run = &p->member.run;
978 if (visible && me_debug) {
979 rc.left = c->rcView.left+run->pt.x;
980 rc.right = c->rcView.left+run->pt.x+run->nWidth;
981 rc.top = c->pt.y+run->pt.y;
982 rc.bottom = c->pt.y+run->pt.y+height;
983 TRACE("rc = (%d, %d, %d, %d)\n", rc.left, rc.top, rc.right, rc.bottom);
984 if (run->nFlags & MERF_SKIPPED)
985 DrawFocusRect(c->hDC, &rc);
986 else
987 FrameRect(c->hDC, &rc, GetSysColorBrush(COLOR_GRAYTEXT));
988 }
989 if (visible)
990 ME_DrawRun(c, run->pt.x, c->pt.y+run->pt.y+baseline, p, &paragraph->member.para);
991 if (me_debug)
992 {
993 /* I'm using %ls, hope wsprintfW is not going to use wrong (4-byte) WCHAR version */
994 const WCHAR wszRunDebug[] = {'[','%','d',':','%','x',']',' ','%','l','s',0};
995 WCHAR buf[2560];
996 POINT pt;
997 pt.x = run->pt.x;
998 pt.y = c->pt.y + run->pt.y;
999 wsprintfW(buf, wszRunDebug, no, p->member.run.nFlags, p->member.run.strText->szData);
1000 ME_DebugWrite(c->hDC, &pt, buf);
1001 }
1002 /* c->pt.x += p->member.run.nWidth; */
1003 break;
1004 case diCell:
1005 /* Clear any space at the bottom of the cell after the text. */
1006 if (para->nFlags & MEPF_ROWSTART)
1007 break;
1008 y += height;
1009 rc.top = y;
1010 rc.bottom = p->member.cell.pt.y + p->member.cell.nHeight
1011 - ME_GetYScrollPos(c->editor);
1012 if (RectVisible(c->hDC, &rc))
1013 {
1014 FillRect(c->hDC, &rc, c->editor->hbrBackground);
1015 }
1016 break;
1017 default:
1018 break;
1019 }
1020 no++;
1021 }
1022
1023 ME_DrawTableBorders(c, paragraph);
1024
1025 SetTextAlign(c->hDC, align);
1026 }
1027
1028 void ME_ScrollAbs(ME_TextEditor *editor, int absY)
1029 {
1030 ME_Scroll(editor, absY, 1);
1031 }
1032
1033 void ME_ScrollUp(ME_TextEditor *editor, int cy)
1034 {
1035 ME_Scroll(editor, cy, 2);
1036 }
1037
1038 void ME_ScrollDown(ME_TextEditor *editor, int cy)
1039 {
1040 ME_Scroll(editor, cy, 3);
1041 }
1042
1043 void ME_Scroll(ME_TextEditor *editor, int value, int type)
1044 {
1045 SCROLLINFO si;
1046 int nOrigPos, nNewPos, nActualScroll;
1047 HWND hWnd;
1048 LONG winStyle;
1049 BOOL bScrollBarIsVisible, bScrollBarWillBeVisible;
1050
1051 nOrigPos = ME_GetYScrollPos(editor);
1052
1053 si.cbSize = sizeof(SCROLLINFO);
1054 si.fMask = SIF_POS;
1055
1056 switch (type)
1057 {
1058 case 1:
1059 /*Scroll absolutely*/
1060 si.nPos = value;
1061 break;
1062 case 2:
1063 /* Scroll up - towards the beginning of the document */
1064 si.nPos = nOrigPos - value;
1065 break;
1066 case 3:
1067 /* Scroll down - towards the end of the document */
1068 si.nPos = nOrigPos + value;
1069 break;
1070 default:
1071 FIXME("ME_Scroll called incorrectly\n");
1072 si.nPos = 0;
1073 }
1074
1075 nNewPos = SetScrollInfo(editor->hWnd, SB_VERT, &si, TRUE);
1076 editor->vert_si.nPos = nNewPos;
1077 nActualScroll = nOrigPos - nNewPos;
1078 if (abs(nActualScroll) > editor->sizeWindow.cy)
1079 InvalidateRect(editor->hWnd, NULL, TRUE);
1080 else
1081 ScrollWindowEx(editor->hWnd, 0, nActualScroll, NULL, NULL, NULL, NULL, SW_INVALIDATE);
1082 ME_Repaint(editor);
1083
1084 hWnd = editor->hWnd;
1085 winStyle = GetWindowLongW(hWnd, GWL_STYLE);
1086 bScrollBarIsVisible = (winStyle & WS_VSCROLL) != 0;
1087 bScrollBarWillBeVisible = (editor->nHeight > editor->sizeWindow.cy)
1088 || (winStyle & ES_DISABLENOSCROLL);
1089 if (bScrollBarIsVisible != bScrollBarWillBeVisible)
1090 {
1091 ShowScrollBar(hWnd, SB_VERT, bScrollBarWillBeVisible);
1092 }
1093 ME_UpdateScrollBar(editor);
1094 }
1095
1096
1097 void ME_UpdateScrollBar(ME_TextEditor *editor)
1098 {
1099 /* Note that this is the only function that should ever call SetScrolLInfo
1100 * with SIF_PAGE or SIF_RANGE. SetScrollPos and SetScrollRange should never
1101 * be used at all. */
1102
1103 HWND hWnd;
1104 SCROLLINFO si;
1105 BOOL bScrollBarWasVisible,bScrollBarWillBeVisible;
1106
1107 if (ME_WrapMarkedParagraphs(editor))
1108 FIXME("ME_UpdateScrollBar had to call ME_WrapMarkedParagraphs\n");
1109
1110 hWnd = editor->hWnd;
1111 si.cbSize = sizeof(si);
1112 bScrollBarWasVisible = ME_GetYScrollVisible(editor);
1113 bScrollBarWillBeVisible = editor->nHeight > editor->sizeWindow.cy;
1114
1115 si.fMask = SIF_PAGE | SIF_RANGE | SIF_POS;
1116 if (GetWindowLongW(hWnd, GWL_STYLE) & ES_DISABLENOSCROLL)
1117 {
1118 si.fMask |= SIF_DISABLENOSCROLL;
1119 bScrollBarWillBeVisible = TRUE;
1120 }
1121
1122 if (bScrollBarWasVisible != bScrollBarWillBeVisible)
1123 {
1124 ShowScrollBar(hWnd, SB_VERT, bScrollBarWillBeVisible);
1125 ME_MarkAllForWrapping(editor);
1126 ME_WrapMarkedParagraphs(editor);
1127 }
1128
1129 si.nMin = 0;
1130 si.nMax = editor->nTotalLength;
1131 si.nPos = editor->vert_si.nPos;
1132 si.nPage = editor->sizeWindow.cy;
1133
1134 if (!(si.nMin == editor->vert_si.nMin && si.nMax == editor->vert_si.nMax && si.nPage == editor->vert_si.nPage))
1135 {
1136 TRACE("min=%d max=%d page=%d\n", si.nMin, si.nMax, si.nPage);
1137 editor->vert_si.nMin = si.nMin;
1138 editor->vert_si.nMax = si.nMax;
1139 editor->vert_si.nPage = si.nPage;
1140 if (bScrollBarWillBeVisible)
1141 {
1142 SetScrollInfo(hWnd, SB_VERT, &si, TRUE);
1143 }
1144 else
1145 {
1146 if (bScrollBarWasVisible && !(si.fMask & SIF_DISABLENOSCROLL))
1147 {
1148 SetScrollInfo(hWnd, SB_VERT, &si, TRUE);
1149 ShowScrollBar(hWnd, SB_VERT, FALSE);
1150 ME_ScrollAbs(editor, 0);
1151 }
1152 }
1153 }
1154 }
1155
1156 int ME_GetYScrollPos(ME_TextEditor *editor)
1157 {
1158 return editor->vert_si.nPos;
1159 }
1160
1161 BOOL ME_GetYScrollVisible(ME_TextEditor *editor)
1162 { /* Returns true if the scrollbar is visible */
1163 return (editor->vert_si.nMax - editor->vert_si.nMin >= max(editor->vert_si.nPage - 1, 0));
1164 }
1165
1166 void ME_EnsureVisible(ME_TextEditor *editor, ME_DisplayItem *pRun)
1167 {
1168 ME_DisplayItem *pRow = ME_FindItemBack(pRun, diStartRow);
1169 ME_DisplayItem *pPara = ME_FindItemBack(pRun, diParagraph);
1170 int y, yrel, yheight, yold;
1171
1172 assert(pRow);
1173 assert(pPara);
1174
1175 y = pPara->member.para.pt.y+pRow->member.row.pt.y;
1176 yheight = pRow->member.row.nHeight;
1177 yold = ME_GetYScrollPos(editor);
1178 yrel = y - yold;
1179
1180 if (y < yold)
1181 ME_ScrollAbs(editor,y);
1182 else if (yrel + yheight > editor->sizeWindow.cy)
1183 ME_ScrollAbs(editor,y+yheight-editor->sizeWindow.cy);
1184 }
1185
1186
1187 void
1188 ME_InvalidateFromOfs(ME_TextEditor *editor, int nCharOfs)
1189 {
1190 RECT rc;
1191 int x, y, height;
1192 ME_Cursor tmp;
1193
1194 ME_RunOfsFromCharOfs(editor, nCharOfs, &tmp.pRun, &tmp.nOffset);
1195 ME_GetCursorCoordinates(editor, &tmp, &x, &y, &height);
1196
1197 rc.left = 0;
1198 rc.top = y;
1199 rc.bottom = y + height;
1200 rc.right = editor->rcFormat.right;
1201 InvalidateRect(editor->hWnd, &rc, FALSE);
1202 }
1203
1204
1205 void
1206 ME_InvalidateSelection(ME_TextEditor *editor)
1207 {
1208 ME_DisplayItem *para1, *para2;
1209 int nStart, nEnd;
1210 int len = ME_GetTextLength(editor);
1211
1212 ME_GetSelection(editor, &nStart, &nEnd);
1213 /* if both old and new selection are 0-char (= caret only), then
1214 there's no (inverted) area to be repainted, neither old nor new */
1215 if (nStart == nEnd && editor->nLastSelStart == editor->nLastSelEnd)
1216 return;
1217 ME_WrapMarkedParagraphs(editor);
1218 ME_GetSelectionParas(editor, &para1, &para2);
1219 assert(para1->type == diParagraph);
1220 assert(para2->type == diParagraph);
1221 /* last selection markers aren't always updated, which means
1222 they can point past the end of the document */
1223 if (editor->nLastSelStart > len || editor->nLastSelEnd > len) {
1224 ME_MarkForPainting(editor,
1225 ME_FindItemFwd(editor->pBuffer->pFirst, diParagraph),
1226 ME_FindItemFwd(editor->pBuffer->pFirst, diTextEnd));
1227 } else {
1228 /* if the start part of selection is being expanded or contracted... */
1229 if (nStart < editor->nLastSelStart) {
1230 ME_MarkForPainting(editor, para1, ME_FindItemFwd(editor->pLastSelStartPara, diParagraphOrEnd));
1231 } else
1232 if (nStart > editor->nLastSelStart) {
1233 ME_MarkForPainting(editor, editor->pLastSelStartPara, ME_FindItemFwd(para1, diParagraphOrEnd));
1234 }
1235
1236 /* if the end part of selection is being contracted or expanded... */
1237 if (nEnd < editor->nLastSelEnd) {
1238 ME_MarkForPainting(editor, para2, ME_FindItemFwd(editor->pLastSelEndPara, diParagraphOrEnd));
1239 } else
1240 if (nEnd > editor->nLastSelEnd) {
1241 ME_MarkForPainting(editor, editor->pLastSelEndPara, ME_FindItemFwd(para2, diParagraphOrEnd));
1242 }
1243 }
1244
1245 ME_InvalidateMarkedParagraphs(editor);
1246 /* remember the last invalidated position */
1247 ME_GetSelection(editor, &editor->nLastSelStart, &editor->nLastSelEnd);
1248 ME_GetSelectionParas(editor, &editor->pLastSelStartPara, &editor->pLastSelEndPara);
1249 assert(editor->pLastSelStartPara->type == diParagraph);
1250 assert(editor->pLastSelEndPara->type == diParagraph);
1251 }
1252
1253 void
1254 ME_QueueInvalidateFromCursor(ME_TextEditor *editor, int nCursor)
1255 {
1256 editor->nInvalidOfs = ME_GetCursorOfs(editor, nCursor);
1257 }
1258
1259
1260 BOOL
1261 ME_SetZoom(ME_TextEditor *editor, int numerator, int denominator)
1262 {
1263 /* TODO: Zoom images and objects */
1264
1265 if (numerator != 0)
1266 {
1267 if (denominator == 0)
1268 return FALSE;
1269 if (1.0 / 64.0 > (float)numerator / (float)denominator
1270 || (float)numerator / (float)denominator > 64.0)
1271 return FALSE;
1272 }
1273
1274 editor->nZoomNumerator = numerator;
1275 editor->nZoomDenominator = denominator;
1276
1277 ME_RewrapRepaint(editor);
1278 return TRUE;
1279 }