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msvcrt: Forward _realloc_crt to realloc.
[wine.git] / dlls / riched20 / paint.c
blob2be034b370bfabbfae14d526674498fc98760234
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 static void ME_DrawParagraph(ME_Context *c, ME_DisplayItem *paragraph);
27
28 void ME_PaintContent(ME_TextEditor *editor, HDC hDC, BOOL bOnlyNew, const RECT *rcUpdate)
29 {
30 ME_DisplayItem *item;
31 ME_Context c;
32 int ys, ye;
33 HRGN oldRgn;
34
35 oldRgn = CreateRectRgn(0, 0, 0, 0);
36 if (!GetClipRgn(hDC, oldRgn))
37 {
38 DeleteObject(oldRgn);
39 oldRgn = NULL;
40 }
41 IntersectClipRect(hDC, rcUpdate->left, rcUpdate->top,
42 rcUpdate->right, rcUpdate->bottom);
43
44 editor->nSequence++;
45 ME_InitContext(&c, editor, hDC);
46 SetBkMode(hDC, TRANSPARENT);
47 ME_MoveCaret(editor);
48 item = editor->pBuffer->pFirst->next;
49 /* This context point is an offset for the paragraph positions stored
50 * during wrapping. It shouldn't be modified during painting. */
51 c.pt.x = c.rcView.left - editor->horz_si.nPos;
52 c.pt.y = c.rcView.top - editor->vert_si.nPos;
53 while(item != editor->pBuffer->pLast)
54 {
55 assert(item->type == diParagraph);
56
57 ys = c.pt.y + item->member.para.pt.y;
58 if (item->member.para.pCell
59 != item->member.para.next_para->member.para.pCell)
60 {
61 ME_Cell *cell = NULL;
62 cell = &ME_FindItemBack(item->member.para.next_para, diCell)->member.cell;
63 ye = c.pt.y + cell->pt.y + cell->nHeight;
64 } else {
65 ye = ys + item->member.para.nHeight;
66 }
67 if (item->member.para.pCell && !(item->member.para.nFlags & MEPF_ROWEND) &&
68 item->member.para.pCell != item->member.para.prev_para->member.para.pCell)
69 {
70 /* the border shifts the text down */
71 ys -= item->member.para.pCell->member.cell.yTextOffset;
72 }
73
74 if (!bOnlyNew || (item->member.para.nFlags & MEPF_REPAINT))
75 {
76 /* Draw the pargraph if any of the paragraph is in the update region. */
77 if (ys < rcUpdate->bottom && ye > rcUpdate->top)
78 {
79 ME_DrawParagraph(&c, item);
80 /* Clear the repaint flag if the whole paragraph is in the
81 * update region. */
82 if (rcUpdate->top <= ys && rcUpdate->bottom >= ye)
83 item->member.para.nFlags &= ~MEPF_REPAINT;
84 }
85 }
86 item = item->member.para.next_para;
87 }
88 if (c.pt.y + editor->nTotalLength < c.rcView.bottom)
89 {
90 /* Fill space after the end of the text. */
91 RECT rc;
92 rc.top = c.pt.y + editor->nTotalLength;
93 rc.left = c.rcView.left;
94 rc.bottom = c.rcView.bottom;
95 rc.right = c.rcView.right;
96
97 if (bOnlyNew)
98 {
99 /* Only erase region drawn from previous call to ME_PaintContent */
100 if (editor->nTotalLength < editor->nLastTotalLength)
101 rc.bottom = c.pt.y + editor->nLastTotalLength;
102 else
103 SetRectEmpty(&rc);
104 }
105
106 IntersectRect(&rc, &rc, rcUpdate);
107
108 if (!IsRectEmpty(&rc))
109 FillRect(hDC, &rc, c.editor->hbrBackground);
110 }
111 if (editor->nTotalLength != editor->nLastTotalLength ||
112 editor->nTotalWidth != editor->nLastTotalWidth)
113 ME_SendRequestResize(editor, FALSE);
114 editor->nLastTotalLength = editor->nTotalLength;
115 editor->nLastTotalWidth = editor->nTotalWidth;
116
117 SelectClipRgn(hDC, oldRgn);
118 if (oldRgn)
119 DeleteObject(oldRgn);
120
121 c.hDC = NULL;
122 ME_DestroyContext(&c);
123 }
124
125 void ME_Repaint(ME_TextEditor *editor)
126 {
127 if (ME_WrapMarkedParagraphs(editor))
128 {
129 ME_UpdateScrollBar(editor);
130 FIXME("ME_Repaint had to call ME_WrapMarkedParagraphs\n");
131 }
132 ITextHost_TxViewChange(editor->texthost, TRUE);
133 }
134
135 void ME_UpdateRepaint(ME_TextEditor *editor, BOOL update_now)
136 {
137 /* Should be called whenever the contents of the control have changed */
138 BOOL wrappedParagraphs;
139
140 wrappedParagraphs = ME_WrapMarkedParagraphs(editor);
141 if (wrappedParagraphs)
142 ME_UpdateScrollBar(editor);
143
144 /* Ensure that the cursor is visible */
145 ME_EnsureVisible(editor, &editor->pCursors[0]);
146
147 ITextHost_TxViewChange(editor->texthost, update_now);
148
149 ME_SendSelChange(editor);
150
151 /* send EN_CHANGE if the event mask asks for it */
152 if(editor->nEventMask & ENM_CHANGE)
153 {
154 editor->nEventMask &= ~ENM_CHANGE;
155 ME_SendOldNotify(editor, EN_CHANGE);
156 editor->nEventMask |= ENM_CHANGE;
157 }
158 }
159
160 void
161 ME_RewrapRepaint(ME_TextEditor *editor)
162 {
163 /* RewrapRepaint should be called whenever the control has changed in
164 * looks, but not content. Like resizing. */
165
166 ME_MarkAllForWrapping(editor);
167 ME_WrapMarkedParagraphs(editor);
168 ME_UpdateScrollBar(editor);
169 ME_Repaint(editor);
170 }
171
172 int ME_twips2pointsX(ME_Context *c, int x)
173 {
174 if (c->editor->nZoomNumerator == 0)
175 return x * c->dpi.cx / 1440;
176 else
177 return x * c->dpi.cx * c->editor->nZoomNumerator / 1440 / c->editor->nZoomDenominator;
178 }
179
180 int ME_twips2pointsY(ME_Context *c, int y)
181 {
182 if (c->editor->nZoomNumerator == 0)
183 return y * c->dpi.cy / 1440;
184 else
185 return y * c->dpi.cy * c->editor->nZoomNumerator / 1440 / c->editor->nZoomDenominator;
186 }
187
188 static void ME_HighlightSpace(ME_Context *c, int x, int y, LPCWSTR szText,
189 int nChars, ME_Style *s, int width,
190 int nSelFrom, int nSelTo, int ymin, int cy)
191 {
192 HDC hDC = c->hDC;
193 HGDIOBJ hOldFont = NULL;
194 SIZE sz;
195 int selWidth;
196 /* Only highlight if there is a selection in the run and when
197 * EM_HIDESELECTION is not being used to hide the selection. */
198 if (nSelFrom >= nChars || nSelTo < 0 || nSelFrom >= nSelTo
199 || c->editor->bHideSelection)
200 return;
201 hOldFont = ME_SelectStyleFont(c, s);
202 if (width <= 0)
203 {
204 GetTextExtentPoint32W(hDC, szText, nChars, &sz);
205 width = sz.cx;
206 }
207 if (nSelFrom < 0) nSelFrom = 0;
208 if (nSelTo > nChars) nSelTo = nChars;
209 GetTextExtentPoint32W(hDC, szText, nSelFrom, &sz);
210 x += sz.cx;
211 if (nSelTo != nChars)
212 {
213 GetTextExtentPoint32W(hDC, szText+nSelFrom, nSelTo-nSelFrom, &sz);
214 selWidth = sz.cx;
215 } else {
216 selWidth = width - sz.cx;
217 }
218 ME_UnselectStyleFont(c, s, hOldFont);
219
220 if (c->editor->bEmulateVersion10)
221 PatBlt(hDC, x, ymin, selWidth, cy, DSTINVERT);
222 else
223 {
224 RECT rect;
225 HBRUSH hBrush;
226 rect.left = x;
227 rect.top = ymin;
228 rect.right = x + selWidth;
229 rect.bottom = ymin + cy;
230 hBrush = CreateSolidBrush(ITextHost_TxGetSysColor(c->editor->texthost,
231 COLOR_HIGHLIGHT));
232 FillRect(hDC, &rect, hBrush);
233 DeleteObject(hBrush);
234 }
235 }
236
237 static void ME_DrawTextWithStyle(ME_Context *c, int x, int y, LPCWSTR szText,
238 int nChars, ME_Style *s, int width,
239 int nSelFrom, int nSelTo, int ymin, int cy)
240 {
241 HDC hDC = c->hDC;
242 HGDIOBJ hOldFont;
243 COLORREF rgbOld;
244 int yOffset = 0, yTwipsOffset = 0;
245 SIZE sz;
246 COLORREF rgb;
247 HPEN hPen = NULL, hOldPen = NULL;
248 BOOL bHighlightedText = (nSelFrom < nChars && nSelTo >= 0
249 && nSelFrom < nSelTo && !c->editor->bHideSelection);
250 int xSelStart = x, xSelEnd = x;
251 int *lpDx = NULL;
252 /* lpDx is only needed for tabs to make sure the underline done automatically
253 * by the font extends to the end of the tab. Tabs are always stored as
254 * a single character run, so we can handle this case separately, since
255 * otherwise lpDx would need to specify the lengths of each character. */
256 if (width && nChars == 1)
257 lpDx = &width; /* Make sure underline for tab extends across tab space */
258
259 hOldFont = ME_SelectStyleFont(c, s);
260 if ((s->fmt.dwMask & s->fmt.dwEffects) & CFM_OFFSET) {
261 yTwipsOffset = s->fmt.yOffset;
262 }
263 if ((s->fmt.dwMask & s->fmt.dwEffects) & (CFM_SUPERSCRIPT | CFM_SUBSCRIPT)) {
264 if (s->fmt.dwEffects & CFE_SUPERSCRIPT) yTwipsOffset = s->fmt.yHeight/3;
265 if (s->fmt.dwEffects & CFE_SUBSCRIPT) yTwipsOffset = -s->fmt.yHeight/12;
266 }
267 if (yTwipsOffset)
268 yOffset = ME_twips2pointsY(c, yTwipsOffset);
269
270 if ((s->fmt.dwMask & CFM_LINK) && (s->fmt.dwEffects & CFE_LINK))
271 rgb = RGB(0,0,255);
272 else if ((s->fmt.dwMask & CFM_COLOR) && (s->fmt.dwEffects & CFE_AUTOCOLOR))
273 rgb = ITextHost_TxGetSysColor(c->editor->texthost, COLOR_WINDOWTEXT);
274 else
275 rgb = s->fmt.crTextColor;
276
277 /* Determine the area that is selected in the run. */
278 GetTextExtentPoint32W(hDC, szText, nChars, &sz);
279 /* Treat width as an optional parameter. We can get the width from the
280 * text extent of the string if it isn't specified. */
281 if (!width) width = sz.cx;
282 if (bHighlightedText)
283 {
284 if (nSelFrom <= 0)
285 {
286 nSelFrom = 0;
287 }
288 else
289 {
290 GetTextExtentPoint32W(hDC, szText, nSelFrom, &sz);
291 xSelStart = x + sz.cx;
292 }
293 if (nSelTo >= nChars)
294 {
295 nSelTo = nChars;
296 xSelEnd = x + width;
297 }
298 else
299 {
300 GetTextExtentPoint32W(hDC, szText+nSelFrom, nSelTo-nSelFrom, &sz);
301 xSelEnd = xSelStart + sz.cx;
302 }
303 }
304
305 /* Choose the pen type for underlining the text. */
306 if (s->fmt.dwMask & CFM_UNDERLINETYPE)
307 {
308 switch (s->fmt.bUnderlineType)
309 {
310 case CFU_UNDERLINE:
311 case CFU_UNDERLINEWORD: /* native seems to map it to simple underline (MSDN) */
312 case CFU_UNDERLINEDOUBLE: /* native seems to map it to simple underline (MSDN) */
313 hPen = CreatePen(PS_SOLID, 1, rgb);
314 break;
315 case CFU_UNDERLINEDOTTED:
316 hPen = CreatePen(PS_DOT, 1, rgb);
317 break;
318 default:
319 WINE_FIXME("Unknown underline type (%u)\n", s->fmt.bUnderlineType);
320 /* fall through */
321 case CFU_CF1UNDERLINE: /* this type is supported in the font, do nothing */
322 case CFU_UNDERLINENONE:
323 hPen = NULL;
324 break;
325 }
326 if (hPen)
327 {
328 hOldPen = SelectObject(hDC, hPen);
329 }
330 }
331
332 rgbOld = SetTextColor(hDC, rgb);
333 if (bHighlightedText && !c->editor->bEmulateVersion10)
334 {
335 COLORREF rgbBackOld;
336 RECT dim;
337 /* FIXME: should use textmetrics info for Descent info */
338 if (hPen)
339 MoveToEx(hDC, x, y - yOffset + 1, NULL);
340 if (xSelStart > x)
341 {
342 ExtTextOutW(hDC, x, y-yOffset, 0, NULL, szText, nSelFrom, NULL);
343 if (hPen)
344 LineTo(hDC, xSelStart, y - yOffset + 1);
345 }
346 dim.top = ymin;
347 dim.bottom = ymin + cy;
348 dim.left = xSelStart;
349 dim.right = xSelEnd;
350 SetTextColor(hDC, ITextHost_TxGetSysColor(c->editor->texthost,
351 COLOR_HIGHLIGHTTEXT));
352 rgbBackOld = SetBkColor(hDC, ITextHost_TxGetSysColor(c->editor->texthost,
353 COLOR_HIGHLIGHT));
354 ExtTextOutW(hDC, xSelStart, y-yOffset, ETO_OPAQUE, &dim,
355 szText+nSelFrom, nSelTo-nSelFrom, lpDx);
356 if (hPen)
357 LineTo(hDC, xSelEnd, y - yOffset + 1);
358 SetBkColor(hDC, rgbBackOld);
359 if (xSelEnd < x + width)
360 {
361 SetTextColor(hDC, rgb);
362 ExtTextOutW(hDC, xSelEnd, y-yOffset, 0, NULL, szText+nSelTo,
363 nChars-nSelTo, NULL);
364 if (hPen)
365 LineTo(hDC, x + width, y - yOffset + 1);
366 }
367 }
368 else
369 {
370 ExtTextOutW(hDC, x, y-yOffset, 0, NULL, szText, nChars, lpDx);
371
372 /* FIXME: should use textmetrics info for Descent info */
373 if (hPen)
374 {
375 MoveToEx(hDC, x, y - yOffset + 1, NULL);
376 LineTo(hDC, x + width, y - yOffset + 1);
377 }
378
379 if (bHighlightedText) /* v1.0 inverts the selection */
380 {
381 PatBlt(hDC, xSelStart, ymin, xSelEnd-xSelStart, cy, DSTINVERT);
382 }
383 }
384
385 if (hPen)
386 {
387 SelectObject(hDC, hOldPen);
388 DeleteObject(hPen);
389 }
390 SetTextColor(hDC, rgbOld);
391 ME_UnselectStyleFont(c, s, hOldFont);
392 }
393
394 static void ME_DebugWrite(HDC hDC, const POINT *pt, LPCWSTR szText) {
395 int align = SetTextAlign(hDC, TA_LEFT|TA_TOP);
396 HGDIOBJ hFont = SelectObject(hDC, GetStockObject(DEFAULT_GUI_FONT));
397 COLORREF color = SetTextColor(hDC, RGB(128,128,128));
398 TextOutW(hDC, pt->x, pt->y, szText, lstrlenW(szText));
399 SelectObject(hDC, hFont);
400 SetTextAlign(hDC, align);
401 SetTextColor(hDC, color);
402 }
403
404 static void ME_DrawRun(ME_Context *c, int x, int y, ME_DisplayItem *rundi, ME_Paragraph *para)
405 {
406 ME_Run *run = &rundi->member.run;
407 ME_DisplayItem *start;
408 int runofs = run->nCharOfs+para->nCharOfs;
409 int nSelFrom, nSelTo;
410 const WCHAR wszSpace[] = {' ', 0};
411
412 if (run->nFlags & MERF_HIDDEN)
413 return;
414
415 start = ME_FindItemBack(rundi, diStartRow);
416 ME_GetSelectionOfs(c->editor, &nSelFrom, &nSelTo);
417
418 /* Draw selected end-of-paragraph mark */
419 if (run->nFlags & MERF_ENDPARA)
420 {
421 if (runofs >= nSelFrom && runofs < nSelTo)
422 {
423 ME_HighlightSpace(c, x, y, wszSpace, 1, run->style, 0, 0, 1,
424 c->pt.y + para->pt.y + start->member.row.pt.y,
425 start->member.row.nHeight);
426 }
427 return;
428 }
429
430 if (run->nFlags & (MERF_TAB | MERF_ENDCELL))
431 {
432 /* wszSpace is used instead of the tab character because otherwise
433 * an unwanted symbol can be inserted instead. */
434 ME_DrawTextWithStyle(c, x, y, wszSpace, 1, run->style, run->nWidth,
435 nSelFrom-runofs, nSelTo-runofs,
436 c->pt.y + para->pt.y + start->member.row.pt.y,
437 start->member.row.nHeight);
438 return;
439 }
440
441 if (run->nFlags & MERF_GRAPHICS)
442 ME_DrawOLE(c, x, y, run, para, (runofs >= nSelFrom) && (runofs < nSelTo));
443 else
444 {
445 if (c->editor->cPasswordMask)
446 {
447 ME_String *szMasked = ME_MakeStringR(c->editor->cPasswordMask, run->strText->nLen);
448 ME_DrawTextWithStyle(c, x, y,
449 szMasked->szData, szMasked->nLen, run->style, run->nWidth,
450 nSelFrom-runofs,nSelTo-runofs,
451 c->pt.y + para->pt.y + start->member.row.pt.y,
452 start->member.row.nHeight);
453 ME_DestroyString(szMasked);
454 }
455 else
456 ME_DrawTextWithStyle(c, x, y,
457 run->strText->szData, run->strText->nLen, run->style, run->nWidth,
458 nSelFrom-runofs,nSelTo-runofs,
459 c->pt.y + para->pt.y + start->member.row.pt.y,
460 start->member.row.nHeight);
461 }
462 }
463
464 /* The documented widths are in points (72 dpi), but converting them to
465 * 96 dpi (standard display resolution) avoids dealing with fractions. */
466 static const struct {unsigned width : 8, pen_style : 4, dble : 1;} border_details[] = {
467 /* none */ {0, PS_SOLID, FALSE},
468 /* 3/4 */ {1, PS_SOLID, FALSE},
469 /* 1 1/2 */ {2, PS_SOLID, FALSE},
470 /* 2 1/4 */ {3, PS_SOLID, FALSE},
471 /* 3 */ {4, PS_SOLID, FALSE},
472 /* 4 1/2 */ {6, PS_SOLID, FALSE},
473 /* 6 */ {8, PS_SOLID, FALSE},
474 /* 3/4 double */ {1, PS_SOLID, TRUE},
475 /* 1 1/2 double */ {2, PS_SOLID, TRUE},
476 /* 2 1/4 double */ {3, PS_SOLID, TRUE},
477 /* 3/4 gray */ {1, PS_DOT /* FIXME */, FALSE},
478 /* 1 1/2 dashed */ {2, PS_DASH, FALSE},
479 };
480
481 static const COLORREF pen_colors[16] = {
482 /* Black */ RGB(0x00, 0x00, 0x00), /* Blue */ RGB(0x00, 0x00, 0xFF),
483 /* Cyan */ RGB(0x00, 0xFF, 0xFF), /* Green */ RGB(0x00, 0xFF, 0x00),
484 /* Magenta */ RGB(0xFF, 0x00, 0xFF), /* Red */ RGB(0xFF, 0x00, 0x00),
485 /* Yellow */ RGB(0xFF, 0xFF, 0x00), /* White */ RGB(0xFF, 0xFF, 0xFF),
486 /* Dark blue */ RGB(0x00, 0x00, 0x80), /* Dark cyan */ RGB(0x00, 0x80, 0x80),
487 /* Dark green */ RGB(0x00, 0x80, 0x80), /* Dark magenta */ RGB(0x80, 0x00, 0x80),
488 /* Dark red */ RGB(0x80, 0x00, 0x00), /* Dark yellow */ RGB(0x80, 0x80, 0x00),
489 /* Dark gray */ RGB(0x80, 0x80, 0x80), /* Light gray */ RGB(0xc0, 0xc0, 0xc0),
490 };
491
492 static int ME_GetBorderPenWidth(ME_Context* c, int idx)
493 {
494 int width = border_details[idx].width;
495
496 if (c->dpi.cx != 96)
497 width = MulDiv(width, c->dpi.cx, 96);
498
499 if (c->editor->nZoomNumerator != 0)
500 width = MulDiv(width, c->editor->nZoomNumerator, c->editor->nZoomDenominator);
501
502 return width;
503 }
504
505 int ME_GetParaBorderWidth(ME_Context* c, int flags)
506 {
507 int idx = (flags >> 8) & 0xF;
508 int width;
509
510 if (idx >= sizeof(border_details) / sizeof(border_details[0]))
511 {
512 FIXME("Unsupported border value %d\n", idx);
513 return 0;
514 }
515 width = ME_GetBorderPenWidth(c, idx);
516 if (border_details[idx].dble) width = width * 2 + 1;
517 return width;
518 }
519
520 static void ME_DrawParaDecoration(ME_Context* c, ME_Paragraph* para, int y, RECT* bounds)
521 {
522 int idx, border_width, top_border, bottom_border;
523 RECT rc;
524 BOOL hasParaBorder;
525
526 SetRectEmpty(bounds);
527 if (!(para->pFmt->dwMask & (PFM_BORDER | PFM_SPACEBEFORE | PFM_SPACEAFTER))) return;
528
529 border_width = top_border = bottom_border = 0;
530 idx = (para->pFmt->wBorders >> 8) & 0xF;
531 hasParaBorder = (!(c->editor->bEmulateVersion10 &&
532 para->pFmt->dwMask & PFM_TABLE &&
533 para->pFmt->wEffects & PFE_TABLE) &&
534 (para->pFmt->dwMask & PFM_BORDER) &&
535 idx != 0 &&
536 (para->pFmt->wBorders & 0xF));
537 if (hasParaBorder)
538 {
539 /* FIXME: wBorders is not stored as MSDN says in v1.0 - 4.1 of richedit
540 * controls. It actually stores the paragraph or row border style. Although
541 * the value isn't used for drawing, it is used for streaming out rich text.
542 *
543 * wBorders stores the border style for each side (top, left, bottom, right)
544 * using nibble (4 bits) to store each border style. The rich text format
545 * control words, and their associated value are the following:
546 * \brdrdash 0
547 * \brdrdashsm 1
548 * \brdrdb 2
549 * \brdrdot 3
550 * \brdrhair 4
551 * \brdrs 5
552 * \brdrth 6
553 * \brdrtriple 7
554 *
555 * The order of the sides stored actually differs from v1.0 to 3.0 and v4.1.
556 * The mask corresponding to each side for the version are the following:
557 * mask v1.0-3.0 v4.1
558 * 0x000F top left
559 * 0x00F0 left top
560 * 0x0F00 bottom right
561 * 0xF000 right bottom
562 */
563 if (para->pFmt->wBorders & 0x00B0)
564 FIXME("Unsupported border flags %x\n", para->pFmt->wBorders);
565 border_width = ME_GetParaBorderWidth(c, para->pFmt->wBorders);
566 if (para->pFmt->wBorders & 4) top_border = border_width;
567 if (para->pFmt->wBorders & 8) bottom_border = border_width;
568 }
569
570 if (para->pFmt->dwMask & PFM_SPACEBEFORE)
571 {
572 rc.left = c->rcView.left;
573 rc.right = c->rcView.right;
574 rc.top = y;
575 bounds->top = ME_twips2pointsY(c, para->pFmt->dySpaceBefore);
576 rc.bottom = y + bounds->top + top_border;
577 FillRect(c->hDC, &rc, c->editor->hbrBackground);
578 }
579
580 if (para->pFmt->dwMask & PFM_SPACEAFTER)
581 {
582 rc.left = c->rcView.left;
583 rc.right = c->rcView.right;
584 rc.bottom = y + para->nHeight;
585 bounds->bottom = ME_twips2pointsY(c, para->pFmt->dySpaceAfter);
586 rc.top = rc.bottom - bounds->bottom - bottom_border;
587 FillRect(c->hDC, &rc, c->editor->hbrBackground);
588 }
589
590 /* Native richedit doesn't support paragraph borders in v1.0 - 4.1,
591 * but might support it in later versions. */
592 if (hasParaBorder) {
593 int pen_width, rightEdge;
594 COLORREF pencr;
595 HPEN pen = NULL, oldpen = NULL;
596 POINT pt;
597
598 if (para->pFmt->wBorders & 64) /* autocolor */
599 pencr = ITextHost_TxGetSysColor(c->editor->texthost,
600 COLOR_WINDOWTEXT);
601 else
602 pencr = pen_colors[(para->pFmt->wBorders >> 12) & 0xF];
603
604 rightEdge = c->pt.x + max(c->editor->sizeWindow.cx,
605 c->editor->nTotalWidth);
606
607 pen_width = ME_GetBorderPenWidth(c, idx);
608 pen = CreatePen(border_details[idx].pen_style, pen_width, pencr);
609 oldpen = SelectObject(c->hDC, pen);
610 MoveToEx(c->hDC, 0, 0, &pt);
611
612 /* before & after spaces are not included in border */
613
614 /* helper to draw the double lines in case of corner */
615 #define DD(x) ((para->pFmt->wBorders & (x)) ? (pen_width + 1) : 0)
616
617 if (para->pFmt->wBorders & 1)
618 {
619 MoveToEx(c->hDC, c->pt.x, y + bounds->top, NULL);
620 LineTo(c->hDC, c->pt.x, y + para->nHeight - bounds->bottom);
621 if (border_details[idx].dble) {
622 rc.left = c->pt.x + 1;
623 rc.right = rc.left + border_width;
624 rc.top = y + bounds->top;
625 rc.bottom = y + para->nHeight - bounds->bottom;
626 FillRect(c->hDC, &rc, c->editor->hbrBackground);
627 MoveToEx(c->hDC, c->pt.x + pen_width + 1, y + bounds->top + DD(4), NULL);
628 LineTo(c->hDC, c->pt.x + pen_width + 1, y + para->nHeight - bounds->bottom - DD(8));
629 }
630 bounds->left += border_width;
631 }
632 if (para->pFmt->wBorders & 2)
633 {
634 MoveToEx(c->hDC, rightEdge - 1, y + bounds->top, NULL);
635 LineTo(c->hDC, rightEdge - 1, y + para->nHeight - bounds->bottom);
636 if (border_details[idx].dble) {
637 rc.left = rightEdge - pen_width - 1;
638 rc.right = rc.left + pen_width;
639 rc.top = y + bounds->top;
640 rc.bottom = y + para->nHeight - bounds->bottom;
641 FillRect(c->hDC, &rc, c->editor->hbrBackground);
642 MoveToEx(c->hDC, rightEdge - 1 - pen_width - 1, y + bounds->top + DD(4), NULL);
643 LineTo(c->hDC, rightEdge - 1 - pen_width - 1, y + para->nHeight - bounds->bottom - DD(8));
644 }
645 bounds->right += border_width;
646 }
647 if (para->pFmt->wBorders & 4)
648 {
649 MoveToEx(c->hDC, c->pt.x, y + bounds->top, NULL);
650 LineTo(c->hDC, rightEdge, y + bounds->top);
651 if (border_details[idx].dble) {
652 MoveToEx(c->hDC, c->pt.x + DD(1), y + bounds->top + pen_width + 1, NULL);
653 LineTo(c->hDC, rightEdge - DD(2), y + bounds->top + pen_width + 1);
654 }
655 bounds->top += border_width;
656 }
657 if (para->pFmt->wBorders & 8)
658 {
659 MoveToEx(c->hDC, c->pt.x, y + para->nHeight - bounds->bottom - 1, NULL);
660 LineTo(c->hDC, rightEdge, y + para->nHeight - bounds->bottom - 1);
661 if (border_details[idx].dble) {
662 MoveToEx(c->hDC, c->pt.x + DD(1), y + para->nHeight - bounds->bottom - 1 - pen_width - 1, NULL);
663 LineTo(c->hDC, rightEdge - DD(2), y + para->nHeight - bounds->bottom - 1 - pen_width - 1);
664 }
665 bounds->bottom += border_width;
666 }
667 #undef DD
668
669 MoveToEx(c->hDC, pt.x, pt.y, NULL);
670 SelectObject(c->hDC, oldpen);
671 DeleteObject(pen);
672 }
673 }
674
675 static void ME_DrawTableBorders(ME_Context *c, ME_DisplayItem *paragraph)
676 {
677 ME_Paragraph *para = &paragraph->member.para;
678 if (!c->editor->bEmulateVersion10) /* v4.1 */
679 {
680 if (para->pCell)
681 {
682 RECT rc;
683 ME_Cell *cell = &para->pCell->member.cell;
684 ME_DisplayItem *paraAfterRow;
685 HPEN pen, oldPen;
686 LOGBRUSH logBrush;
687 HBRUSH brush;
688 COLORREF color;
689 POINT oldPt;
690 int width;
691 BOOL atTop = (para->pCell != para->prev_para->member.para.pCell);
692 BOOL atBottom = (para->pCell != para->next_para->member.para.pCell);
693 int top = c->pt.y + (atTop ? cell->pt.y : para->pt.y);
694 int bottom = (atBottom ?
695 c->pt.y + cell->pt.y + cell->nHeight :
696 top + para->nHeight + (atTop ? cell->yTextOffset : 0));
697 rc.left = c->pt.x + cell->pt.x;
698 rc.right = rc.left + cell->nWidth;
699 if (atTop) {
700 /* Erase gap before text if not all borders are the same height. */
701 width = max(ME_twips2pointsY(c, cell->border.top.width), 1);
702 rc.top = top + width;
703 width = cell->yTextOffset - width;
704 rc.bottom = rc.top + width;
705 if (width) {
706 FillRect(c->hDC, &rc, c->editor->hbrBackground);
707 }
708 }
709 /* Draw cell borders.
710 * The order borders are draw in is left, top, bottom, right in order
711 * to be consistent with native richedit. This is noticeable from the
712 * overlap of borders of different colours. */
713 if (!(para->nFlags & MEPF_ROWEND)) {
714 rc.top = top;
715 rc.bottom = bottom;
716 if (cell->border.left.width > 0)
717 {
718 color = cell->border.left.colorRef;
719 width = max(ME_twips2pointsX(c, cell->border.left.width), 1);
720 } else {
721 color = RGB(192,192,192);
722 width = 1;
723 }
724 logBrush.lbStyle = BS_SOLID;
725 logBrush.lbColor = color;
726 logBrush.lbHatch = 0;
727 pen = ExtCreatePen(PS_GEOMETRIC|PS_SOLID|PS_ENDCAP_FLAT|PS_JOIN_MITER,
728 width, &logBrush, 0, NULL);
729 oldPen = SelectObject(c->hDC, pen);
730 MoveToEx(c->hDC, rc.left, rc.top, &oldPt);
731 LineTo(c->hDC, rc.left, rc.bottom);
732 SelectObject(c->hDC, oldPen);
733 DeleteObject(pen);
734 MoveToEx(c->hDC, oldPt.x, oldPt.y, NULL);
735 }
736
737 if (atTop) {
738 if (cell->border.top.width > 0)
739 {
740 brush = CreateSolidBrush(cell->border.top.colorRef);
741 width = max(ME_twips2pointsY(c, cell->border.top.width), 1);
742 } else {
743 brush = GetStockObject(LTGRAY_BRUSH);
744 width = 1;
745 }
746 rc.top = top;
747 rc.bottom = rc.top + width;
748 FillRect(c->hDC, &rc, brush);
749 if (cell->border.top.width > 0)
750 DeleteObject(brush);
751 }
752
753 /* Draw the bottom border if at the last paragraph in the cell, and when
754 * in the last row of the table. */
755 if (atBottom) {
756 int oldLeft = rc.left;
757 width = max(ME_twips2pointsY(c, cell->border.bottom.width), 1);
758 paraAfterRow = ME_GetTableRowEnd(paragraph)->member.para.next_para;
759 if (paraAfterRow->member.para.nFlags & MEPF_ROWSTART) {
760 ME_DisplayItem *nextEndCell;
761 nextEndCell = ME_FindItemBack(ME_GetTableRowEnd(paraAfterRow), diCell);
762 assert(nextEndCell && !nextEndCell->member.cell.next_cell);
763 rc.left = c->pt.x + nextEndCell->member.cell.pt.x;
764 /* FIXME: Native draws FROM the bottom of the table rather than
765 * TO the bottom of the table in this case, but just doing so here
766 * will cause the next row to erase the border. */
767 /*
768 rc.top = bottom;
769 rc.bottom = rc.top + width;
770 */
771 }
772 if (rc.left < rc.right) {
773 if (cell->border.bottom.width > 0) {
774 brush = CreateSolidBrush(cell->border.bottom.colorRef);
775 } else {
776 brush = GetStockObject(LTGRAY_BRUSH);
777 }
778 rc.bottom = bottom;
779 rc.top = rc.bottom - width;
780 FillRect(c->hDC, &rc, brush);
781 if (cell->border.bottom.width > 0)
782 DeleteObject(brush);
783 }
784 rc.left = oldLeft;
785 }
786
787 /* Right border only drawn if at the end of the table row. */
788 if (!cell->next_cell->member.cell.next_cell &&
789 !(para->nFlags & MEPF_ROWSTART))
790 {
791 rc.top = top;
792 rc.bottom = bottom;
793 if (cell->border.right.width > 0) {
794 color = cell->border.right.colorRef;
795 width = max(ME_twips2pointsX(c, cell->border.right.width), 1);
796 } else {
797 color = RGB(192,192,192);
798 width = 1;
799 }
800 logBrush.lbStyle = BS_SOLID;
801 logBrush.lbColor = color;
802 logBrush.lbHatch = 0;
803 pen = ExtCreatePen(PS_GEOMETRIC|PS_SOLID|PS_ENDCAP_FLAT|PS_JOIN_MITER,
804 width, &logBrush, 0, NULL);
805 oldPen = SelectObject(c->hDC, pen);
806 MoveToEx(c->hDC, rc.right - 1, rc.top, &oldPt);
807 LineTo(c->hDC, rc.right - 1, rc.bottom);
808 SelectObject(c->hDC, oldPen);
809 DeleteObject(pen);
810 MoveToEx(c->hDC, oldPt.x, oldPt.y, NULL);
811 }
812 }
813 } else { /* v1.0 - 3.0 */
814 /* Draw simple table border */
815 if (para->pFmt->dwMask & PFM_TABLE && para->pFmt->wEffects & PFE_TABLE) {
816 HPEN pen = NULL, oldpen = NULL;
817 int i, firstX, startX, endX, rowY, rowBottom, nHeight;
818 POINT oldPt;
819 PARAFORMAT2 *pNextFmt;
820
821 pen = CreatePen(PS_SOLID, 0, para->border.top.colorRef);
822 oldpen = SelectObject(c->hDC, pen);
823
824 /* Find the start relative to the text */
825 firstX = c->pt.x + ME_FindItemFwd(paragraph, diRun)->member.run.pt.x;
826 /* Go back by the horizontal gap, which is stored in dxOffset */
827 firstX -= ME_twips2pointsX(c, para->pFmt->dxOffset);
828 /* The left edge, stored in dxStartIndent affected just the first edge */
829 startX = firstX - ME_twips2pointsX(c, para->pFmt->dxStartIndent);
830 rowY = c->pt.y + para->pt.y;
831 if (para->pFmt->dwMask & PFM_SPACEBEFORE)
832 rowY += ME_twips2pointsY(c, para->pFmt->dySpaceBefore);
833 nHeight = ME_FindItemFwd(paragraph, diStartRow)->member.row.nHeight;
834 rowBottom = rowY + nHeight;
835
836 /* Draw horizontal lines */
837 MoveToEx(c->hDC, firstX, rowY, &oldPt);
838 i = para->pFmt->cTabCount - 1;
839 endX = startX + ME_twips2pointsX(c, para->pFmt->rgxTabs[i] & 0x00ffffff) + 1;
840 LineTo(c->hDC, endX, rowY);
841 pNextFmt = para->next_para->member.para.pFmt;
842 /* The bottom of the row only needs to be drawn if the next row is
843 * not a table. */
844 if (!(pNextFmt && pNextFmt->dwMask & PFM_TABLE && pNextFmt->wEffects &&
845 para->nRows == 1))
846 {
847 /* Decrement rowBottom to draw the bottom line within the row, and
848 * to not draw over this line when drawing the vertical lines. */
849 rowBottom--;
850 MoveToEx(c->hDC, firstX, rowBottom, NULL);
851 LineTo(c->hDC, endX, rowBottom);
852 }
853
854 /* Draw vertical lines */
855 MoveToEx(c->hDC, firstX, rowY, NULL);
856 LineTo(c->hDC, firstX, rowBottom);
857 for (i = 0; i < para->pFmt->cTabCount; i++)
858 {
859 int rightBoundary = para->pFmt->rgxTabs[i] & 0x00ffffff;
860 endX = startX + ME_twips2pointsX(c, rightBoundary);
861 MoveToEx(c->hDC, endX, rowY, NULL);
862 LineTo(c->hDC, endX, rowBottom);
863 }
864
865 MoveToEx(c->hDC, oldPt.x, oldPt.y, NULL);
866 SelectObject(c->hDC, oldpen);
867 DeleteObject(pen);
868 }
869 }
870 }
871
872 static void ME_DrawParagraph(ME_Context *c, ME_DisplayItem *paragraph)
873 {
874 int align = SetTextAlign(c->hDC, TA_BASELINE);
875 ME_DisplayItem *p;
876 ME_Run *run;
877 ME_Paragraph *para = NULL;
878 RECT rc, bounds;
879 int y;
880 int height = 0, baseline = 0, no=0;
881 BOOL visible = FALSE;
882
883 rc.left = c->pt.x;
884 rc.right = c->rcView.right;
885
886 assert(paragraph);
887 para = &paragraph->member.para;
888 y = c->pt.y + para->pt.y;
889 if (para->pCell)
890 {
891 ME_Cell *cell = &para->pCell->member.cell;
892 rc.left = c->pt.x + cell->pt.x;
893 rc.right = rc.left + cell->nWidth;
894 }
895 if (para->nFlags & MEPF_ROWSTART) {
896 ME_Cell *cell = &para->next_para->member.para.pCell->member.cell;
897 rc.right = c->pt.x + cell->pt.x;
898 } else if (para->nFlags & MEPF_ROWEND) {
899 ME_Cell *cell = &para->prev_para->member.para.pCell->member.cell;
900 rc.left = c->pt.x + cell->pt.x + cell->nWidth;
901 }
902 ME_DrawParaDecoration(c, para, y, &bounds);
903 y += bounds.top;
904 if (bounds.left || bounds.right) {
905 rc.left = max(rc.left, c->pt.x + bounds.left);
906 rc.right = min(rc.right, c->pt.x - bounds.right
907 + max(c->editor->sizeWindow.cx,
908 c->editor->nTotalWidth));
909 }
910
911 for (p = paragraph->next; p != para->next_para; p = p->next)
912 {
913 switch(p->type) {
914 case diParagraph:
915 assert(FALSE);
916 break;
917 case diStartRow:
918 y += height;
919 rc.top = y;
920 if (para->nFlags & (MEPF_ROWSTART|MEPF_ROWEND)) {
921 rc.bottom = y + para->nHeight;
922 } else {
923 rc.bottom = y + p->member.row.nHeight;
924 }
925 visible = RectVisible(c->hDC, &rc);
926 if (visible) {
927 FillRect(c->hDC, &rc, c->editor->hbrBackground);
928 }
929 if (bounds.right)
930 {
931 /* If scrolled to the right past the end of the text, then
932 * there may be space to the right of the paragraph border. */
933 RECT rcAfterBrdr = rc;
934 rcAfterBrdr.left = rc.right + bounds.right;
935 rcAfterBrdr.right = c->rcView.right;
936 if (RectVisible(c->hDC, &rcAfterBrdr))
937 FillRect(c->hDC, &rcAfterBrdr, c->editor->hbrBackground);
938 }
939 if (me_debug)
940 {
941 const WCHAR wszRowDebug[] = {'r','o','w','[','%','d',']',0};
942 WCHAR buf[128];
943 POINT pt = c->pt;
944 wsprintfW(buf, wszRowDebug, no);
945 pt.y = 12+y;
946 ME_DebugWrite(c->hDC, &pt, buf);
947 }
948
949 height = p->member.row.nHeight;
950 baseline = p->member.row.nBaseline;
951 break;
952 case diRun:
953 assert(para);
954 run = &p->member.run;
955 if (visible && me_debug) {
956 RECT rc;
957 rc.left = c->pt.x + run->pt.x;
958 rc.right = rc.left + run->nWidth;
959 rc.top = c->pt.y + para->pt.y + run->pt.y;
960 rc.bottom = rc.bottom + height;
961 TRACE("rc = (%d, %d, %d, %d)\n", rc.left, rc.top, rc.right, rc.bottom);
962 FrameRect(c->hDC, &rc, GetSysColorBrush(COLOR_GRAYTEXT));
963 }
964 if (visible)
965 ME_DrawRun(c, c->pt.x + run->pt.x,
966 c->pt.y + para->pt.y + run->pt.y + baseline, p, para);
967 if (me_debug)
968 {
969 /* I'm using %ls, hope wsprintfW is not going to use wrong (4-byte) WCHAR version */
970 const WCHAR wszRunDebug[] = {'[','%','d',':','%','x',']',' ','%','l','s',0};
971 WCHAR buf[2560];
972 POINT pt;
973 pt.x = c->pt.x + run->pt.x;
974 pt.y = c->pt.y + para->pt.y + run->pt.y;
975 wsprintfW(buf, wszRunDebug, no, p->member.run.nFlags, p->member.run.strText->szData);
976 ME_DebugWrite(c->hDC, &pt, buf);
977 }
978 break;
979 case diCell:
980 /* Clear any space at the bottom of the cell after the text. */
981 if (para->nFlags & (MEPF_ROWSTART|MEPF_ROWEND))
982 break;
983 y += height;
984 rc.top = c->pt.y + para->pt.y + para->nHeight;
985 rc.bottom = c->pt.y + p->member.cell.pt.y + p->member.cell.nHeight;
986 if (RectVisible(c->hDC, &rc))
987 {
988 FillRect(c->hDC, &rc, c->editor->hbrBackground);
989 }
990 break;
991 default:
992 break;
993 }
994 no++;
995 }
996
997 ME_DrawTableBorders(c, paragraph);
998
999 SetTextAlign(c->hDC, align);
1000 }
1001
1002 void ME_ScrollAbs(ME_TextEditor *editor, int x, int y)
1003 {
1004 BOOL bScrollBarIsVisible, bScrollBarWillBeVisible;
1005 int scrollX = 0, scrollY = 0;
1006
1007 if (editor->horz_si.nPos != x) {
1008 x = min(x, editor->horz_si.nMax);
1009 x = max(x, editor->horz_si.nMin);
1010 scrollX = editor->horz_si.nPos - x;
1011 editor->horz_si.nPos = x;
1012 if (editor->horz_si.nMax > 0xFFFF) /* scale to 16-bit value */
1013 x = MulDiv(x, 0xFFFF, editor->horz_si.nMax);
1014 ITextHost_TxSetScrollPos(editor->texthost, SB_HORZ, x, TRUE);
1015 }
1016
1017 if (editor->vert_si.nPos != y) {
1018 y = min(y, editor->vert_si.nMax - (int)editor->vert_si.nPage);
1019 y = max(y, editor->vert_si.nMin);
1020 scrollY = editor->vert_si.nPos - y;
1021 editor->vert_si.nPos = y;
1022 if (editor->vert_si.nMax > 0xFFFF) /* scale to 16-bit value */
1023 y = MulDiv(y, 0xFFFF, editor->vert_si.nMax);
1024 ITextHost_TxSetScrollPos(editor->texthost, SB_VERT, y, TRUE);
1025 }
1026
1027 if (abs(scrollX) > editor->sizeWindow.cx ||
1028 abs(scrollY) > editor->sizeWindow.cy)
1029 ITextHost_TxInvalidateRect(editor->texthost, NULL, TRUE);
1030 else
1031 ITextHost_TxScrollWindowEx(editor->texthost, scrollX, scrollY,
1032 &editor->rcFormat, &editor->rcFormat,
1033 NULL, NULL, SW_INVALIDATE);
1034 ME_Repaint(editor);
1035
1036 if (editor->hWnd)
1037 {
1038 LONG winStyle = GetWindowLongW(editor->hWnd, GWL_STYLE);
1039 if (editor->styleFlags & WS_HSCROLL)
1040 {
1041 bScrollBarIsVisible = (winStyle & WS_HSCROLL) != 0;
1042 bScrollBarWillBeVisible = (editor->nTotalWidth > editor->sizeWindow.cx
1043 && (editor->styleFlags & WS_HSCROLL))
1044 || (editor->styleFlags & ES_DISABLENOSCROLL);
1045 if (bScrollBarIsVisible != bScrollBarWillBeVisible)
1046 ITextHost_TxShowScrollBar(editor->texthost, SB_HORZ,
1047 bScrollBarWillBeVisible);
1048 }
1049
1050 if (editor->styleFlags & WS_VSCROLL)
1051 {
1052 bScrollBarIsVisible = (winStyle & WS_VSCROLL) != 0;
1053 bScrollBarWillBeVisible = (editor->nTotalLength > editor->sizeWindow.cy
1054 && (editor->styleFlags & WS_VSCROLL)
1055 && (editor->styleFlags & ES_MULTILINE))
1056 || (editor->styleFlags & ES_DISABLENOSCROLL);
1057 if (bScrollBarIsVisible != bScrollBarWillBeVisible)
1058 ITextHost_TxShowScrollBar(editor->texthost, SB_VERT,
1059 bScrollBarWillBeVisible);
1060 }
1061 }
1062 ME_UpdateScrollBar(editor);
1063 }
1064
1065 void ME_HScrollAbs(ME_TextEditor *editor, int x)
1066 {
1067 ME_ScrollAbs(editor, x, editor->vert_si.nPos);
1068 }
1069
1070 void ME_VScrollAbs(ME_TextEditor *editor, int y)
1071 {
1072 ME_ScrollAbs(editor, editor->horz_si.nPos, y);
1073 }
1074
1075 void ME_ScrollUp(ME_TextEditor *editor, int cy)
1076 {
1077 ME_VScrollAbs(editor, editor->vert_si.nPos - cy);
1078 }
1079
1080 void ME_ScrollDown(ME_TextEditor *editor, int cy)
1081 {
1082 ME_VScrollAbs(editor, editor->vert_si.nPos + cy);
1083 }
1084
1085 void ME_ScrollLeft(ME_TextEditor *editor, int cx)
1086 {
1087 ME_HScrollAbs(editor, editor->horz_si.nPos - cx);
1088 }
1089
1090 void ME_ScrollRight(ME_TextEditor *editor, int cx)
1091 {
1092 ME_HScrollAbs(editor, editor->horz_si.nPos + cx);
1093 }
1094
1095 /* Calculates the visiblity after a call to SetScrollRange or
1096 * SetScrollInfo with SIF_RANGE. */
1097 static BOOL ME_PostSetScrollRangeVisibility(SCROLLINFO *si)
1098 {
1099 if (si->fMask & SIF_DISABLENOSCROLL)
1100 return TRUE;
1101
1102 /* This must match the check in SetScrollInfo to determine whether
1103 * to show or hide the scrollbars. */
1104 return si->nMin < si->nMax - max(si->nPage - 1, 0);
1105 }
1106
1107 void ME_UpdateScrollBar(ME_TextEditor *editor)
1108 {
1109 /* Note that this is the only function that should ever call
1110 * SetScrollInfo with SIF_PAGE or SIF_RANGE. */
1111
1112 SCROLLINFO si;
1113 BOOL bScrollBarWasVisible, bScrollBarWillBeVisible;
1114
1115 if (ME_WrapMarkedParagraphs(editor))
1116 FIXME("ME_UpdateScrollBar had to call ME_WrapMarkedParagraphs\n");
1117
1118 si.cbSize = sizeof(si);
1119 si.fMask = SIF_PAGE | SIF_RANGE | SIF_POS;
1120 si.nMin = 0;
1121 if (editor->styleFlags & ES_DISABLENOSCROLL)
1122 si.fMask |= SIF_DISABLENOSCROLL;
1123
1124 /* Update horizontal scrollbar */
1125 bScrollBarWasVisible = editor->horz_si.nMax > editor->horz_si.nPage;
1126 bScrollBarWillBeVisible = editor->nTotalWidth > editor->sizeWindow.cx;
1127 if (editor->horz_si.nPos && !bScrollBarWillBeVisible)
1128 {
1129 ME_HScrollAbs(editor, 0);
1130 /* ME_HScrollAbs will call this function,
1131 * so nothing else needs to be done here. */
1132 return;
1133 }
1134
1135 si.nMax = editor->nTotalWidth;
1136 si.nPos = editor->horz_si.nPos;
1137 si.nPage = editor->sizeWindow.cx;
1138
1139 if (si.nMax != editor->horz_si.nMax ||
1140 si.nPage != editor->horz_si.nPage)
1141 {
1142 TRACE("min=%d max=%d page=%d\n", si.nMin, si.nMax, si.nPage);
1143 editor->horz_si.nMax = si.nMax;
1144 editor->horz_si.nPage = si.nPage;
1145 if ((bScrollBarWillBeVisible || bScrollBarWasVisible) &&
1146 editor->styleFlags & WS_HSCROLL)
1147 {
1148 if (si.nMax > 0xFFFF)
1149 {
1150 /* Native scales the scrollbar info to 16-bit external values. */
1151 si.nPos = MulDiv(si.nPos, 0xFFFF, si.nMax);
1152 si.nMax = 0xFFFF;
1153 }
1154 if (editor->hWnd) {
1155 SetScrollInfo(editor->hWnd, SB_HORZ, &si, TRUE);
1156 } else {
1157 ITextHost_TxSetScrollRange(editor->texthost, SB_HORZ, si.nMin, si.nMax, FALSE);
1158 ITextHost_TxSetScrollPos(editor->texthost, SB_HORZ, si.nPos, TRUE);
1159 }
1160 /* SetScrollInfo or SetScrollRange change scrollbar visibility. */
1161 bScrollBarWasVisible = ME_PostSetScrollRangeVisibility(&si);
1162 }
1163 }
1164
1165 if (editor->styleFlags & WS_HSCROLL)
1166 {
1167 if (si.fMask & SIF_DISABLENOSCROLL) {
1168 bScrollBarWillBeVisible = TRUE;
1169 } else if (!(editor->styleFlags & WS_HSCROLL)) {
1170 bScrollBarWillBeVisible = FALSE;
1171 }
1172
1173 if (bScrollBarWasVisible != bScrollBarWillBeVisible)
1174 ITextHost_TxShowScrollBar(editor->texthost, SB_HORZ, bScrollBarWillBeVisible);
1175 }
1176
1177 /* Update vertical scrollbar */
1178 bScrollBarWasVisible = editor->vert_si.nMax > editor->vert_si.nPage;
1179 bScrollBarWillBeVisible = editor->nTotalLength > editor->sizeWindow.cy &&
1180 (editor->styleFlags & ES_MULTILINE);
1181
1182 if (editor->vert_si.nPos && !bScrollBarWillBeVisible)
1183 {
1184 ME_VScrollAbs(editor, 0);
1185 /* ME_VScrollAbs will call this function,
1186 * so nothing else needs to be done here. */
1187 return;
1188 }
1189
1190 si.nMax = editor->nTotalLength;
1191 si.nPos = editor->vert_si.nPos;
1192 si.nPage = editor->sizeWindow.cy;
1193
1194 if (si.nMax != editor->vert_si.nMax ||
1195 si.nPage != editor->vert_si.nPage)
1196 {
1197 TRACE("min=%d max=%d page=%d\n", si.nMin, si.nMax, si.nPage);
1198 editor->vert_si.nMax = si.nMax;
1199 editor->vert_si.nPage = si.nPage;
1200 if ((bScrollBarWillBeVisible || bScrollBarWasVisible) &&
1201 editor->styleFlags & WS_VSCROLL)
1202 {
1203 if (si.nMax > 0xFFFF)
1204 {
1205 /* Native scales the scrollbar info to 16-bit external values. */
1206 si.nPos = MulDiv(si.nPos, 0xFFFF, si.nMax);
1207 si.nMax = 0xFFFF;
1208 }
1209 if (editor->hWnd) {
1210 SetScrollInfo(editor->hWnd, SB_VERT, &si, TRUE);
1211 } else {
1212 ITextHost_TxSetScrollRange(editor->texthost, SB_VERT, si.nMin, si.nMax, FALSE);
1213 ITextHost_TxSetScrollPos(editor->texthost, SB_VERT, si.nPos, TRUE);
1214 }
1215 /* SetScrollInfo or SetScrollRange change scrollbar visibility. */
1216 bScrollBarWasVisible = ME_PostSetScrollRangeVisibility(&si);
1217 }
1218 }
1219
1220 if (editor->styleFlags & WS_VSCROLL)
1221 {
1222 if (si.fMask & SIF_DISABLENOSCROLL) {
1223 bScrollBarWillBeVisible = TRUE;
1224 } else if (!(editor->styleFlags & WS_VSCROLL)) {
1225 bScrollBarWillBeVisible = FALSE;
1226 }
1227
1228 if (bScrollBarWasVisible != bScrollBarWillBeVisible)
1229 ITextHost_TxShowScrollBar(editor->texthost, SB_VERT,
1230 bScrollBarWillBeVisible);
1231 }
1232 }
1233
1234 void ME_EnsureVisible(ME_TextEditor *editor, ME_Cursor *pCursor)
1235 {
1236 ME_Run *pRun = &pCursor->pRun->member.run;
1237 ME_DisplayItem *pRow = ME_FindItemBack(pCursor->pRun, diStartRow);
1238 ME_DisplayItem *pPara = pCursor->pPara;
1239 int x, y, yheight;
1240
1241 assert(pRow);
1242 assert(pPara);
1243
1244 if (editor->styleFlags & ES_AUTOHSCROLL)
1245 {
1246 x = pRun->pt.x + ME_PointFromChar(editor, pRun, pCursor->nOffset);
1247 if (x > editor->horz_si.nPos + editor->sizeWindow.cx)
1248 x = x + 1 - editor->sizeWindow.cx;
1249 else if (x > editor->horz_si.nPos)
1250 x = editor->horz_si.nPos;
1251
1252 if (~editor->styleFlags & ES_AUTOVSCROLL)
1253 {
1254 ME_HScrollAbs(editor, x);
1255 return;
1256 }
1257 } else {
1258 if (~editor->styleFlags & ES_AUTOVSCROLL)
1259 return;
1260 x = editor->horz_si.nPos;
1261 }
1262
1263 y = pPara->member.para.pt.y + pRow->member.row.pt.y;
1264 yheight = pRow->member.row.nHeight;
1265
1266 if (y < editor->vert_si.nPos)
1267 ME_ScrollAbs(editor, x, y);
1268 else if (y + yheight > editor->vert_si.nPos + editor->sizeWindow.cy)
1269 ME_ScrollAbs(editor, x, y + yheight - editor->sizeWindow.cy);
1270 else if (x != editor->horz_si.nPos)
1271 ME_ScrollAbs(editor, x, editor->vert_si.nPos);
1272 }
1273
1274
1275 void
1276 ME_InvalidateSelection(ME_TextEditor *editor)
1277 {
1278 ME_DisplayItem *para1, *para2;
1279 int nStart, nEnd;
1280 int len = ME_GetTextLength(editor);
1281
1282 ME_GetSelectionOfs(editor, &nStart, &nEnd);
1283 /* if both old and new selection are 0-char (= caret only), then
1284 there's no (inverted) area to be repainted, neither old nor new */
1285 if (nStart == nEnd && editor->nLastSelStart == editor->nLastSelEnd)
1286 return;
1287 ME_WrapMarkedParagraphs(editor);
1288 ME_GetSelectionParas(editor, &para1, &para2);
1289 assert(para1->type == diParagraph);
1290 assert(para2->type == diParagraph);
1291 /* last selection markers aren't always updated, which means
1292 * they can point past the end of the document */
1293 if (editor->nLastSelStart > len || editor->nLastSelEnd > len) {
1294 ME_MarkForPainting(editor,
1295 ME_FindItemFwd(editor->pBuffer->pFirst, diParagraph),
1296 editor->pBuffer->pLast);
1297 } else {
1298 /* if the start part of selection is being expanded or contracted... */
1299 if (nStart < editor->nLastSelStart) {
1300 ME_MarkForPainting(editor, para1, editor->pLastSelStartPara->member.para.next_para);
1301 } else if (nStart > editor->nLastSelStart) {
1302 ME_MarkForPainting(editor, editor->pLastSelStartPara, para1->member.para.next_para);
1303 }
1304
1305 /* if the end part of selection is being contracted or expanded... */
1306 if (nEnd < editor->nLastSelEnd) {
1307 ME_MarkForPainting(editor, para2, editor->pLastSelEndPara->member.para.next_para);
1308 } else if (nEnd > editor->nLastSelEnd) {
1309 ME_MarkForPainting(editor, editor->pLastSelEndPara, para2->member.para.next_para);
1310 }
1311 }
1312
1313 ME_InvalidateMarkedParagraphs(editor);
1314 /* remember the last invalidated position */
1315 ME_GetSelectionOfs(editor, &editor->nLastSelStart, &editor->nLastSelEnd);
1316 ME_GetSelectionParas(editor, &editor->pLastSelStartPara, &editor->pLastSelEndPara);
1317 assert(editor->pLastSelStartPara->type == diParagraph);
1318 assert(editor->pLastSelEndPara->type == diParagraph);
1319 }
1320
1321 BOOL
1322 ME_SetZoom(ME_TextEditor *editor, int numerator, int denominator)
1323 {
1324 /* TODO: Zoom images and objects */
1325
1326 if (numerator == 0 && denominator == 0)
1327 {
1328 editor->nZoomNumerator = editor->nZoomDenominator = 0;
1329 return TRUE;
1330 }
1331 if (numerator <= 0 || denominator <= 0)
1332 return FALSE;
1333 if (numerator * 64 <= denominator || numerator / denominator >= 64)
1334 return FALSE;
1335
1336 editor->nZoomNumerator = numerator;
1337 editor->nZoomDenominator = denominator;
1338
1339 ME_RewrapRepaint(editor);
1340 return TRUE;
1341 }
Windows API implementation