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makefiles: Move all the recursion rules to the top-level makefile.
[wine/multimedia.git] / dlls / riched20 / paint.c
blobb0e6c1e513794d2330050477e15c329f47111df6
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 if (!editor->bEmulateVersion10 || (editor->nEventMask & ENM_UPDATE))
133 ME_SendOldNotify(editor, EN_UPDATE);
134 ITextHost_TxViewChange(editor->texthost, TRUE);
135 }
136
137 void ME_UpdateRepaint(ME_TextEditor *editor)
138 {
139 /* Should be called whenever the contents of the control have changed */
140 BOOL wrappedParagraphs;
141
142 wrappedParagraphs = ME_WrapMarkedParagraphs(editor);
143 if (wrappedParagraphs)
144 ME_UpdateScrollBar(editor);
145
146 /* Ensure that the cursor is visible */
147 ME_EnsureVisible(editor, &editor->pCursors[0]);
148
149 /* send EN_CHANGE if the event mask asks for it */
150 if(editor->nEventMask & ENM_CHANGE)
151 {
152 editor->nEventMask &= ~ENM_CHANGE;
153 ME_SendOldNotify(editor, EN_CHANGE);
154 editor->nEventMask |= ENM_CHANGE;
155 }
156 ME_Repaint(editor);
157 ME_SendSelChange(editor);
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 static const struct {unsigned width_num : 4, width_den : 4, pen_style : 4, dble : 1;} border_details[] = {
465 /* none */ {0, 1, PS_SOLID, FALSE},
466 /* 3/4 */ {3, 4, PS_SOLID, FALSE},
467 /* 1 1/2 */ {3, 2, PS_SOLID, FALSE},
468 /* 2 1/4 */ {9, 4, PS_SOLID, FALSE},
469 /* 3 */ {3, 1, PS_SOLID, FALSE},
470 /* 4 1/2 */ {9, 2, PS_SOLID, FALSE},
471 /* 6 */ {6, 1, PS_SOLID, FALSE},
472 /* 3/4 double */ {3, 4, PS_SOLID, TRUE},
473 /* 1 1/2 double */ {3, 2, PS_SOLID, TRUE},
474 /* 2 1/4 double */ {9, 4, PS_SOLID, TRUE},
475 /* 3/4 gray */ {3, 4, PS_DOT /* FIXME */, FALSE},
476 /* 1 1/2 dashed */ {3, 2, PS_DASH, FALSE},
477 };
478
479 static const COLORREF pen_colors[16] = {
480 /* Black */ RGB(0x00, 0x00, 0x00), /* Blue */ RGB(0x00, 0x00, 0xFF),
481 /* Cyan */ RGB(0x00, 0xFF, 0xFF), /* Green */ RGB(0x00, 0xFF, 0x00),
482 /* Magenta */ RGB(0xFF, 0x00, 0xFF), /* Red */ RGB(0xFF, 0x00, 0x00),
483 /* Yellow */ RGB(0xFF, 0xFF, 0x00), /* White */ RGB(0xFF, 0xFF, 0xFF),
484 /* Dark blue */ RGB(0x00, 0x00, 0x80), /* Dark cyan */ RGB(0x00, 0x80, 0x80),
485 /* Dark green */ RGB(0x00, 0x80, 0x80), /* Dark magenta */ RGB(0x80, 0x00, 0x80),
486 /* Dark red */ RGB(0x80, 0x00, 0x00), /* Dark yellow */ RGB(0x80, 0x80, 0x00),
487 /* Dark gray */ RGB(0x80, 0x80, 0x80), /* Light gray */ RGB(0xc0, 0xc0, 0xc0),
488 };
489
490 static int ME_GetBorderPenWidth(ME_TextEditor* editor, int idx)
491 {
492 int width;
493
494 if (editor->nZoomNumerator == 0)
495 {
496 width = border_details[idx].width_num + border_details[idx].width_den / 2;
497 width /= border_details[idx].width_den;
498 }
499 else
500 {
501 width = border_details[idx].width_num * editor->nZoomNumerator;
502 width += border_details[idx].width_den * editor->nZoomNumerator / 2;
503 width /= border_details[idx].width_den * editor->nZoomDenominator;
504 }
505 return width;
506 }
507
508 int ME_GetParaBorderWidth(ME_TextEditor* editor, int flags)
509 {
510 int idx = (flags >> 8) & 0xF;
511 int width;
512
513 if (idx >= sizeof(border_details) / sizeof(border_details[0]))
514 {
515 FIXME("Unsupported border value %d\n", idx);
516 return 0;
517 }
518 width = ME_GetBorderPenWidth(editor, idx);
519 if (border_details[idx].dble) width = width * 2 + 1;
520 return width;
521 }
522
523 static void ME_DrawParaDecoration(ME_Context* c, ME_Paragraph* para, int y, RECT* bounds)
524 {
525 int idx, border_width, top_border, bottom_border;
526 RECT rc;
527 BOOL hasParaBorder;
528
529 SetRectEmpty(bounds);
530 if (!(para->pFmt->dwMask & (PFM_BORDER | PFM_SPACEBEFORE | PFM_SPACEAFTER))) return;
531
532 border_width = top_border = bottom_border = 0;
533 idx = (para->pFmt->wBorders >> 8) & 0xF;
534 hasParaBorder = (!(c->editor->bEmulateVersion10 &&
535 para->pFmt->dwMask & PFM_TABLE &&
536 para->pFmt->wEffects & PFE_TABLE) &&
537 (para->pFmt->dwMask & PFM_BORDER) &&
538 idx != 0 &&
539 (para->pFmt->wBorders & 0xF));
540 if (hasParaBorder)
541 {
542 /* FIXME: wBorders is not stored as MSDN says in v1.0 - 4.1 of richedit
543 * controls. It actually stores the paragraph or row border style. Although
544 * the value isn't used for drawing, it is used for streaming out rich text.
545 *
546 * wBorders stores the border style for each side (top, left, bottom, right)
547 * using nibble (4 bits) to store each border style. The rich text format
548 * control words, and their associated value are the following:
549 * \brdrdash 0
550 * \brdrdashsm 1
551 * \brdrdb 2
552 * \brdrdot 3
553 * \brdrhair 4
554 * \brdrs 5
555 * \brdrth 6
556 * \brdrtriple 7
557 *
558 * The order of the sides stored actually differs from v1.0 to 3.0 and v4.1.
559 * The mask corresponding to each side for the version are the following:
560 * mask v1.0-3.0 v4.1
561 * 0x000F top left
562 * 0x00F0 left top
563 * 0x0F00 bottom right
564 * 0xF000 right bottom
565 */
566 if (para->pFmt->wBorders & 0x00B0)
567 FIXME("Unsupported border flags %x\n", para->pFmt->wBorders);
568 border_width = ME_GetParaBorderWidth(c->editor, para->pFmt->wBorders);
569 if (para->pFmt->wBorders & 4) top_border = border_width;
570 if (para->pFmt->wBorders & 8) bottom_border = border_width;
571 }
572
573 if (para->pFmt->dwMask & PFM_SPACEBEFORE)
574 {
575 rc.left = c->rcView.left;
576 rc.right = c->rcView.right;
577 rc.top = y;
578 bounds->top = ME_twips2pointsY(c, para->pFmt->dySpaceBefore);
579 rc.bottom = y + bounds->top + top_border;
580 FillRect(c->hDC, &rc, c->editor->hbrBackground);
581 }
582
583 if (para->pFmt->dwMask & PFM_SPACEAFTER)
584 {
585 rc.left = c->rcView.left;
586 rc.right = c->rcView.right;
587 rc.bottom = y + para->nHeight;
588 bounds->bottom = ME_twips2pointsY(c, para->pFmt->dySpaceAfter);
589 rc.top = rc.bottom - bounds->bottom - bottom_border;
590 FillRect(c->hDC, &rc, c->editor->hbrBackground);
591 }
592
593 /* Native richedit doesn't support paragraph borders in v1.0 - 4.1,
594 * but might support it in later versions. */
595 if (hasParaBorder) {
596 int pen_width, rightEdge;
597 COLORREF pencr;
598 HPEN pen = NULL, oldpen = NULL;
599 POINT pt;
600
601 if (para->pFmt->wBorders & 64) /* autocolor */
602 pencr = ITextHost_TxGetSysColor(c->editor->texthost,
603 COLOR_WINDOWTEXT);
604 else
605 pencr = pen_colors[(para->pFmt->wBorders >> 12) & 0xF];
606
607 rightEdge = c->pt.x + max(c->editor->sizeWindow.cx,
608 c->editor->nTotalWidth);
609
610 pen_width = ME_GetBorderPenWidth(c->editor, idx);
611 pen = CreatePen(border_details[idx].pen_style, pen_width, pencr);
612 oldpen = SelectObject(c->hDC, pen);
613 MoveToEx(c->hDC, 0, 0, &pt);
614
615 /* before & after spaces are not included in border */
616
617 /* helper to draw the double lines in case of corner */
618 #define DD(x) ((para->pFmt->wBorders & (x)) ? (pen_width + 1) : 0)
619
620 if (para->pFmt->wBorders & 1)
621 {
622 MoveToEx(c->hDC, c->pt.x, y + bounds->top, NULL);
623 LineTo(c->hDC, c->pt.x, y + para->nHeight - bounds->bottom);
624 if (border_details[idx].dble) {
625 rc.left = c->pt.x + 1;
626 rc.right = rc.left + border_width;
627 rc.top = y + bounds->top;
628 rc.bottom = y + para->nHeight - bounds->bottom;
629 FillRect(c->hDC, &rc, c->editor->hbrBackground);
630 MoveToEx(c->hDC, c->pt.x + pen_width + 1, y + bounds->top + DD(4), NULL);
631 LineTo(c->hDC, c->pt.x + pen_width + 1, y + para->nHeight - bounds->bottom - DD(8));
632 }
633 bounds->left += border_width;
634 }
635 if (para->pFmt->wBorders & 2)
636 {
637 MoveToEx(c->hDC, rightEdge - 1, y + bounds->top, NULL);
638 LineTo(c->hDC, rightEdge - 1, y + para->nHeight - bounds->bottom);
639 if (border_details[idx].dble) {
640 rc.left = rightEdge - pen_width - 1;
641 rc.right = rc.left + pen_width;
642 rc.top = y + bounds->top;
643 rc.bottom = y + para->nHeight - bounds->bottom;
644 FillRect(c->hDC, &rc, c->editor->hbrBackground);
645 MoveToEx(c->hDC, rightEdge - 1 - pen_width - 1, y + bounds->top + DD(4), NULL);
646 LineTo(c->hDC, rightEdge - 1 - pen_width - 1, y + para->nHeight - bounds->bottom - DD(8));
647 }
648 bounds->right += border_width;
649 }
650 if (para->pFmt->wBorders & 4)
651 {
652 MoveToEx(c->hDC, c->pt.x, y + bounds->top, NULL);
653 LineTo(c->hDC, rightEdge, y + bounds->top);
654 if (border_details[idx].dble) {
655 MoveToEx(c->hDC, c->pt.x + DD(1), y + bounds->top + pen_width + 1, NULL);
656 LineTo(c->hDC, rightEdge - DD(2), y + bounds->top + pen_width + 1);
657 }
658 bounds->top += border_width;
659 }
660 if (para->pFmt->wBorders & 8)
661 {
662 MoveToEx(c->hDC, c->pt.x, y + para->nHeight - bounds->bottom - 1, NULL);
663 LineTo(c->hDC, rightEdge, y + para->nHeight - bounds->bottom - 1);
664 if (border_details[idx].dble) {
665 MoveToEx(c->hDC, c->pt.x + DD(1), y + para->nHeight - bounds->bottom - 1 - pen_width - 1, NULL);
666 LineTo(c->hDC, rightEdge - DD(2), y + para->nHeight - bounds->bottom - 1 - pen_width - 1);
667 }
668 bounds->bottom += border_width;
669 }
670 #undef DD
671
672 MoveToEx(c->hDC, pt.x, pt.y, NULL);
673 SelectObject(c->hDC, oldpen);
674 DeleteObject(pen);
675 }
676 }
677
678 static void ME_DrawTableBorders(ME_Context *c, ME_DisplayItem *paragraph)
679 {
680 ME_Paragraph *para = &paragraph->member.para;
681 if (!c->editor->bEmulateVersion10) /* v4.1 */
682 {
683 if (para->pCell)
684 {
685 RECT rc;
686 ME_Cell *cell = &para->pCell->member.cell;
687 ME_DisplayItem *paraAfterRow;
688 HPEN pen, oldPen;
689 LOGBRUSH logBrush;
690 HBRUSH brush;
691 COLORREF color;
692 POINT oldPt;
693 int width;
694 BOOL atTop = (para->pCell != para->prev_para->member.para.pCell);
695 BOOL atBottom = (para->pCell != para->next_para->member.para.pCell);
696 int top = c->pt.y + (atTop ? cell->pt.y : para->pt.y);
697 int bottom = (atBottom ?
698 c->pt.y + cell->pt.y + cell->nHeight :
699 top + para->nHeight + (atTop ? cell->yTextOffset : 0));
700 rc.left = c->pt.x + cell->pt.x;
701 rc.right = rc.left + cell->nWidth;
702 if (atTop) {
703 /* Erase gap before text if not all borders are the same height. */
704 width = max(ME_twips2pointsY(c, cell->border.top.width), 1);
705 rc.top = top + width;
706 width = cell->yTextOffset - width;
707 rc.bottom = rc.top + width;
708 if (width) {
709 FillRect(c->hDC, &rc, c->editor->hbrBackground);
710 }
711 }
712 /* Draw cell borders.
713 * The order borders are draw in is left, top, bottom, right in order
714 * to be consistent with native richedit. This is noticeable from the
715 * overlap of borders of different colours. */
716 if (!(para->nFlags & MEPF_ROWEND)) {
717 rc.top = top;
718 rc.bottom = bottom;
719 if (cell->border.left.width > 0)
720 {
721 color = cell->border.left.colorRef;
722 width = max(ME_twips2pointsX(c, cell->border.left.width), 1);
723 } else {
724 color = RGB(192,192,192);
725 width = 1;
726 }
727 logBrush.lbStyle = BS_SOLID;
728 logBrush.lbColor = color;
729 logBrush.lbHatch = 0;
730 pen = ExtCreatePen(PS_GEOMETRIC|PS_SOLID|PS_ENDCAP_FLAT|PS_JOIN_MITER,
731 width, &logBrush, 0, NULL);
732 oldPen = SelectObject(c->hDC, pen);
733 MoveToEx(c->hDC, rc.left, rc.top, &oldPt);
734 LineTo(c->hDC, rc.left, rc.bottom);
735 SelectObject(c->hDC, oldPen);
736 DeleteObject(pen);
737 MoveToEx(c->hDC, oldPt.x, oldPt.y, NULL);
738 }
739
740 if (atTop) {
741 if (cell->border.top.width > 0)
742 {
743 brush = CreateSolidBrush(cell->border.top.colorRef);
744 width = max(ME_twips2pointsY(c, cell->border.top.width), 1);
745 } else {
746 brush = GetStockObject(LTGRAY_BRUSH);
747 width = 1;
748 }
749 rc.top = top;
750 rc.bottom = rc.top + width;
751 FillRect(c->hDC, &rc, brush);
752 if (cell->border.top.width > 0)
753 DeleteObject(brush);
754 }
755
756 /* Draw the bottom border if at the last paragraph in the cell, and when
757 * in the last row of the table. */
758 if (atBottom) {
759 int oldLeft = rc.left;
760 width = max(ME_twips2pointsY(c, cell->border.bottom.width), 1);
761 paraAfterRow = ME_GetTableRowEnd(paragraph)->member.para.next_para;
762 if (paraAfterRow->member.para.nFlags & MEPF_ROWSTART) {
763 ME_DisplayItem *nextEndCell;
764 nextEndCell = ME_FindItemBack(ME_GetTableRowEnd(paraAfterRow), diCell);
765 assert(nextEndCell && !nextEndCell->member.cell.next_cell);
766 rc.left = c->pt.x + nextEndCell->member.cell.pt.x;
767 /* FIXME: Native draws FROM the bottom of the table rather than
768 * TO the bottom of the table in this case, but just doing so here
769 * will cause the next row to erase the border. */
770 /*
771 rc.top = bottom;
772 rc.bottom = rc.top + width;
773 */
774 }
775 if (rc.left < rc.right) {
776 if (cell->border.bottom.width > 0) {
777 brush = CreateSolidBrush(cell->border.bottom.colorRef);
778 } else {
779 brush = GetStockObject(LTGRAY_BRUSH);
780 }
781 rc.bottom = bottom;
782 rc.top = rc.bottom - width;
783 FillRect(c->hDC, &rc, brush);
784 if (cell->border.bottom.width > 0)
785 DeleteObject(brush);
786 }
787 rc.left = oldLeft;
788 }
789
790 /* Right border only drawn if at the end of the table row. */
791 if (!cell->next_cell->member.cell.next_cell &&
792 !(para->nFlags & MEPF_ROWSTART))
793 {
794 rc.top = top;
795 rc.bottom = bottom;
796 if (cell->border.right.width > 0) {
797 color = cell->border.right.colorRef;
798 width = max(ME_twips2pointsX(c, cell->border.right.width), 1);
799 } else {
800 color = RGB(192,192,192);
801 width = 1;
802 }
803 logBrush.lbStyle = BS_SOLID;
804 logBrush.lbColor = color;
805 logBrush.lbHatch = 0;
806 pen = ExtCreatePen(PS_GEOMETRIC|PS_SOLID|PS_ENDCAP_FLAT|PS_JOIN_MITER,
807 width, &logBrush, 0, NULL);
808 oldPen = SelectObject(c->hDC, pen);
809 MoveToEx(c->hDC, rc.right - 1, rc.top, &oldPt);
810 LineTo(c->hDC, rc.right - 1, rc.bottom);
811 SelectObject(c->hDC, oldPen);
812 DeleteObject(pen);
813 MoveToEx(c->hDC, oldPt.x, oldPt.y, NULL);
814 }
815 }
816 } else { /* v1.0 - 3.0 */
817 /* Draw simple table border */
818 if (para->pFmt->dwMask & PFM_TABLE && para->pFmt->wEffects & PFE_TABLE) {
819 HPEN pen = NULL, oldpen = NULL;
820 int i, firstX, startX, endX, rowY, rowBottom, nHeight;
821 POINT oldPt;
822 PARAFORMAT2 *pNextFmt;
823
824 pen = CreatePen(PS_SOLID, 0, para->border.top.colorRef);
825 oldpen = SelectObject(c->hDC, pen);
826
827 /* Find the start relative to the text */
828 firstX = c->pt.x + ME_FindItemFwd(paragraph, diRun)->member.run.pt.x;
829 /* Go back by the horizontal gap, which is stored in dxOffset */
830 firstX -= ME_twips2pointsX(c, para->pFmt->dxOffset);
831 /* The left edge, stored in dxStartIndent affected just the first edge */
832 startX = firstX - ME_twips2pointsX(c, para->pFmt->dxStartIndent);
833 rowY = c->pt.y + para->pt.y;
834 if (para->pFmt->dwMask & PFM_SPACEBEFORE)
835 rowY += ME_twips2pointsY(c, para->pFmt->dySpaceBefore);
836 nHeight = ME_FindItemFwd(paragraph, diStartRow)->member.row.nHeight;
837 rowBottom = rowY + nHeight;
838
839 /* Draw horizontal lines */
840 MoveToEx(c->hDC, firstX, rowY, &oldPt);
841 i = para->pFmt->cTabCount - 1;
842 endX = startX + ME_twips2pointsX(c, para->pFmt->rgxTabs[i] & 0x00ffffff) + 1;
843 LineTo(c->hDC, endX, rowY);
844 pNextFmt = para->next_para->member.para.pFmt;
845 /* The bottom of the row only needs to be drawn if the next row is
846 * not a table. */
847 if (!(pNextFmt && pNextFmt->dwMask & PFM_TABLE && pNextFmt->wEffects &&
848 para->nRows == 1))
849 {
850 /* Decrement rowBottom to draw the bottom line within the row, and
851 * to not draw over this line when drawing the vertical lines. */
852 rowBottom--;
853 MoveToEx(c->hDC, firstX, rowBottom, NULL);
854 LineTo(c->hDC, endX, rowBottom);
855 }
856
857 /* Draw vertical lines */
858 MoveToEx(c->hDC, firstX, rowY, NULL);
859 LineTo(c->hDC, firstX, rowBottom);
860 for (i = 0; i < para->pFmt->cTabCount; i++)
861 {
862 int rightBoundary = para->pFmt->rgxTabs[i] & 0x00ffffff;
863 endX = startX + ME_twips2pointsX(c, rightBoundary);
864 MoveToEx(c->hDC, endX, rowY, NULL);
865 LineTo(c->hDC, endX, rowBottom);
866 }
867
868 MoveToEx(c->hDC, oldPt.x, oldPt.y, NULL);
869 SelectObject(c->hDC, oldpen);
870 DeleteObject(pen);
871 }
872 }
873 }
874
875 static void ME_DrawParagraph(ME_Context *c, ME_DisplayItem *paragraph)
876 {
877 int align = SetTextAlign(c->hDC, TA_BASELINE);
878 ME_DisplayItem *p;
879 ME_Run *run;
880 ME_Paragraph *para = NULL;
881 RECT rc, bounds;
882 int y;
883 int height = 0, baseline = 0, no=0;
884 BOOL visible = FALSE;
885
886 rc.left = c->pt.x;
887 rc.right = c->rcView.right;
888
889 assert(paragraph);
890 para = &paragraph->member.para;
891 y = c->pt.y + para->pt.y;
892 if (para->pCell)
893 {
894 ME_Cell *cell = &para->pCell->member.cell;
895 rc.left = c->pt.x + cell->pt.x;
896 rc.right = rc.left + cell->nWidth;
897 }
898 if (para->nFlags & MEPF_ROWSTART) {
899 ME_Cell *cell = &para->next_para->member.para.pCell->member.cell;
900 rc.right = c->pt.x + cell->pt.x;
901 } else if (para->nFlags & MEPF_ROWEND) {
902 ME_Cell *cell = &para->prev_para->member.para.pCell->member.cell;
903 rc.left = c->pt.x + cell->pt.x + cell->nWidth;
904 }
905 ME_DrawParaDecoration(c, para, y, &bounds);
906 y += bounds.top;
907 if (bounds.left || bounds.right) {
908 rc.left = max(rc.left, c->pt.x + bounds.left);
909 rc.right = min(rc.right, c->pt.x - bounds.right
910 + max(c->editor->sizeWindow.cx,
911 c->editor->nTotalWidth));
912 }
913
914 for (p = paragraph->next; p != para->next_para; p = p->next)
915 {
916 switch(p->type) {
917 case diParagraph:
918 assert(FALSE);
919 break;
920 case diStartRow:
921 y += height;
922 rc.top = y;
923 if (para->nFlags & (MEPF_ROWSTART|MEPF_ROWEND)) {
924 rc.bottom = y + para->nHeight;
925 } else {
926 rc.bottom = y + p->member.row.nHeight;
927 }
928 visible = RectVisible(c->hDC, &rc);
929 if (visible) {
930 FillRect(c->hDC, &rc, c->editor->hbrBackground);
931 }
932 if (bounds.right)
933 {
934 /* If scrolled to the right past the end of the text, then
935 * there may be space to the right of the paragraph border. */
936 RECT rcAfterBrdr = rc;
937 rcAfterBrdr.left = rc.right + bounds.right;
938 rcAfterBrdr.right = c->rcView.right;
939 if (RectVisible(c->hDC, &rcAfterBrdr))
940 FillRect(c->hDC, &rcAfterBrdr, c->editor->hbrBackground);
941 }
942 if (me_debug)
943 {
944 const WCHAR wszRowDebug[] = {'r','o','w','[','%','d',']',0};
945 WCHAR buf[128];
946 POINT pt = c->pt;
947 wsprintfW(buf, wszRowDebug, no);
948 pt.y = 12+y;
949 ME_DebugWrite(c->hDC, &pt, buf);
950 }
951
952 height = p->member.row.nHeight;
953 baseline = p->member.row.nBaseline;
954 break;
955 case diRun:
956 assert(para);
957 run = &p->member.run;
958 if (visible && me_debug) {
959 RECT rc;
960 rc.left = c->pt.x + run->pt.x;
961 rc.right = rc.left + run->nWidth;
962 rc.top = c->pt.y + para->pt.y + run->pt.y;
963 rc.bottom = rc.bottom + height;
964 TRACE("rc = (%d, %d, %d, %d)\n", rc.left, rc.top, rc.right, rc.bottom);
965 if (run->nFlags & MERF_SKIPPED)
966 DrawFocusRect(c->hDC, &rc);
967 else
968 FrameRect(c->hDC, &rc, GetSysColorBrush(COLOR_GRAYTEXT));
969 }
970 if (visible)
971 ME_DrawRun(c, c->pt.x + run->pt.x,
972 c->pt.y + para->pt.y + run->pt.y + baseline, p, para);
973 if (me_debug)
974 {
975 /* I'm using %ls, hope wsprintfW is not going to use wrong (4-byte) WCHAR version */
976 const WCHAR wszRunDebug[] = {'[','%','d',':','%','x',']',' ','%','l','s',0};
977 WCHAR buf[2560];
978 POINT pt;
979 pt.x = c->pt.x + run->pt.x;
980 pt.y = c->pt.y + para->pt.y + run->pt.y;
981 wsprintfW(buf, wszRunDebug, no, p->member.run.nFlags, p->member.run.strText->szData);
982 ME_DebugWrite(c->hDC, &pt, buf);
983 }
984 break;
985 case diCell:
986 /* Clear any space at the bottom of the cell after the text. */
987 if (para->nFlags & (MEPF_ROWSTART|MEPF_ROWEND))
988 break;
989 y += height;
990 rc.top = c->pt.y + para->pt.y + para->nHeight;
991 rc.bottom = c->pt.y + p->member.cell.pt.y + p->member.cell.nHeight;
992 if (RectVisible(c->hDC, &rc))
993 {
994 FillRect(c->hDC, &rc, c->editor->hbrBackground);
995 }
996 break;
997 default:
998 break;
999 }
1000 no++;
1001 }
1002
1003 ME_DrawTableBorders(c, paragraph);
1004
1005 SetTextAlign(c->hDC, align);
1006 }
1007
1008 void ME_ScrollAbs(ME_TextEditor *editor, int x, int y)
1009 {
1010 BOOL bScrollBarIsVisible, bScrollBarWillBeVisible;
1011 int scrollX = 0, scrollY = 0;
1012
1013 if (editor->horz_si.nPos != x) {
1014 x = min(x, editor->horz_si.nMax);
1015 x = max(x, editor->horz_si.nMin);
1016 scrollX = editor->horz_si.nPos - x;
1017 editor->horz_si.nPos = x;
1018 if (editor->horz_si.nMax > 0xFFFF) /* scale to 16-bit value */
1019 x = MulDiv(x, 0xFFFF, editor->horz_si.nMax);
1020 ITextHost_TxSetScrollPos(editor->texthost, SB_HORZ, x, TRUE);
1021 }
1022
1023 if (editor->vert_si.nPos != y) {
1024 y = min(y, editor->vert_si.nMax - (int)editor->vert_si.nPage);
1025 y = max(y, editor->vert_si.nMin);
1026 scrollY = editor->vert_si.nPos - y;
1027 editor->vert_si.nPos = y;
1028 if (editor->vert_si.nMax > 0xFFFF) /* scale to 16-bit value */
1029 y = MulDiv(y, 0xFFFF, editor->vert_si.nMax);
1030 ITextHost_TxSetScrollPos(editor->texthost, SB_VERT, y, TRUE);
1031 }
1032
1033 if (abs(scrollX) > editor->sizeWindow.cx ||
1034 abs(scrollY) > editor->sizeWindow.cy)
1035 ITextHost_TxInvalidateRect(editor->texthost, NULL, TRUE);
1036 else
1037 ITextHost_TxScrollWindowEx(editor->texthost, scrollX, scrollY,
1038 &editor->rcFormat, &editor->rcFormat,
1039 NULL, NULL, SW_INVALIDATE);
1040 ME_Repaint(editor);
1041
1042 if (editor->hWnd)
1043 {
1044 LONG winStyle = GetWindowLongW(editor->hWnd, GWL_STYLE);
1045 if (editor->styleFlags & WS_HSCROLL)
1046 {
1047 bScrollBarIsVisible = (winStyle & WS_HSCROLL) != 0;
1048 bScrollBarWillBeVisible = (editor->nTotalWidth > editor->sizeWindow.cx
1049 && (editor->styleFlags & WS_HSCROLL))
1050 || (editor->styleFlags & ES_DISABLENOSCROLL);
1051 if (bScrollBarIsVisible != bScrollBarWillBeVisible)
1052 ITextHost_TxShowScrollBar(editor->texthost, SB_HORZ,
1053 bScrollBarWillBeVisible);
1054 }
1055
1056 if (editor->styleFlags & WS_VSCROLL)
1057 {
1058 bScrollBarIsVisible = (winStyle & WS_VSCROLL) != 0;
1059 bScrollBarWillBeVisible = (editor->nTotalLength > editor->sizeWindow.cy
1060 && (editor->styleFlags & WS_VSCROLL)
1061 && (editor->styleFlags & ES_MULTILINE))
1062 || (editor->styleFlags & ES_DISABLENOSCROLL);
1063 if (bScrollBarIsVisible != bScrollBarWillBeVisible)
1064 ITextHost_TxShowScrollBar(editor->texthost, SB_VERT,
1065 bScrollBarWillBeVisible);
1066 }
1067 }
1068 ME_UpdateScrollBar(editor);
1069 }
1070
1071 void ME_HScrollAbs(ME_TextEditor *editor, int x)
1072 {
1073 ME_ScrollAbs(editor, x, editor->vert_si.nPos);
1074 }
1075
1076 void ME_VScrollAbs(ME_TextEditor *editor, int y)
1077 {
1078 ME_ScrollAbs(editor, editor->horz_si.nPos, y);
1079 }
1080
1081 void ME_ScrollUp(ME_TextEditor *editor, int cy)
1082 {
1083 ME_VScrollAbs(editor, editor->vert_si.nPos - cy);
1084 }
1085
1086 void ME_ScrollDown(ME_TextEditor *editor, int cy)
1087 {
1088 ME_VScrollAbs(editor, editor->vert_si.nPos + cy);
1089 }
1090
1091 void ME_ScrollLeft(ME_TextEditor *editor, int cx)
1092 {
1093 ME_HScrollAbs(editor, editor->horz_si.nPos - cx);
1094 }
1095
1096 void ME_ScrollRight(ME_TextEditor *editor, int cx)
1097 {
1098 ME_HScrollAbs(editor, editor->horz_si.nPos + cx);
1099 }
1100
1101 /* Calculates the visiblity after a call to SetScrollRange or
1102 * SetScrollInfo with SIF_RANGE. */
1103 static BOOL ME_PostSetScrollRangeVisibility(SCROLLINFO *si)
1104 {
1105 if (si->fMask & SIF_DISABLENOSCROLL)
1106 return TRUE;
1107
1108 /* This must match the check in SetScrollInfo to determine whether
1109 * to show or hide the scrollbars. */
1110 return si->nMin < si->nMax - max(si->nPage - 1, 0);
1111 }
1112
1113 void ME_UpdateScrollBar(ME_TextEditor *editor)
1114 {
1115 /* Note that this is the only function that should ever call
1116 * SetScrollInfo with SIF_PAGE or SIF_RANGE. */
1117
1118 SCROLLINFO si;
1119 BOOL bScrollBarWasVisible, bScrollBarWillBeVisible;
1120
1121 if (ME_WrapMarkedParagraphs(editor))
1122 FIXME("ME_UpdateScrollBar had to call ME_WrapMarkedParagraphs\n");
1123
1124 si.cbSize = sizeof(si);
1125 si.fMask = SIF_PAGE | SIF_RANGE | SIF_POS;
1126 si.nMin = 0;
1127 if (editor->styleFlags & ES_DISABLENOSCROLL)
1128 si.fMask |= SIF_DISABLENOSCROLL;
1129
1130 /* Update horizontal scrollbar */
1131 bScrollBarWasVisible = editor->horz_si.nMax > editor->horz_si.nPage;
1132 bScrollBarWillBeVisible = editor->nTotalWidth > editor->sizeWindow.cx;
1133 if (editor->horz_si.nPos && !bScrollBarWillBeVisible)
1134 {
1135 ME_HScrollAbs(editor, 0);
1136 /* ME_HScrollAbs will call this function,
1137 * so nothing else needs to be done here. */
1138 return;
1139 }
1140
1141 si.nMax = editor->nTotalWidth;
1142 si.nPos = editor->horz_si.nPos;
1143 si.nPage = editor->sizeWindow.cx;
1144
1145 if (si.nMax != editor->horz_si.nMax ||
1146 si.nPage != editor->horz_si.nPage)
1147 {
1148 TRACE("min=%d max=%d page=%d\n", si.nMin, si.nMax, si.nPage);
1149 editor->horz_si.nMax = si.nMax;
1150 editor->horz_si.nPage = si.nPage;
1151 if ((bScrollBarWillBeVisible || bScrollBarWasVisible) &&
1152 editor->styleFlags & WS_HSCROLL)
1153 {
1154 if (si.nMax > 0xFFFF)
1155 {
1156 /* Native scales the scrollbar info to 16-bit external values. */
1157 si.nPos = MulDiv(si.nPos, 0xFFFF, si.nMax);
1158 si.nMax = 0xFFFF;
1159 }
1160 if (editor->hWnd) {
1161 SetScrollInfo(editor->hWnd, SB_HORZ, &si, TRUE);
1162 } else {
1163 ITextHost_TxSetScrollRange(editor->texthost, SB_HORZ, si.nMin, si.nMax, FALSE);
1164 ITextHost_TxSetScrollPos(editor->texthost, SB_HORZ, si.nPos, TRUE);
1165 }
1166 /* SetScrollInfo or SetScrollRange change scrollbar visibility. */
1167 bScrollBarWasVisible = ME_PostSetScrollRangeVisibility(&si);
1168 }
1169 }
1170
1171 if (editor->styleFlags & WS_HSCROLL)
1172 {
1173 if (si.fMask & SIF_DISABLENOSCROLL) {
1174 bScrollBarWillBeVisible = TRUE;
1175 } else if (!(editor->styleFlags & WS_HSCROLL)) {
1176 bScrollBarWillBeVisible = FALSE;
1177 }
1178
1179 if (bScrollBarWasVisible != bScrollBarWillBeVisible)
1180 ITextHost_TxShowScrollBar(editor->texthost, SB_HORZ, bScrollBarWillBeVisible);
1181 }
1182
1183 /* Update vertical scrollbar */
1184 bScrollBarWasVisible = editor->vert_si.nMax > editor->vert_si.nPage;
1185 bScrollBarWillBeVisible = editor->nTotalLength > editor->sizeWindow.cy &&
1186 (editor->styleFlags & ES_MULTILINE);
1187
1188 if (editor->vert_si.nPos && !bScrollBarWillBeVisible)
1189 {
1190 ME_VScrollAbs(editor, 0);
1191 /* ME_VScrollAbs will call this function,
1192 * so nothing else needs to be done here. */
1193 return;
1194 }
1195
1196 si.nMax = editor->nTotalLength;
1197 si.nPos = editor->vert_si.nPos;
1198 si.nPage = editor->sizeWindow.cy;
1199
1200 if (si.nMax != editor->vert_si.nMax ||
1201 si.nPage != editor->vert_si.nPage)
1202 {
1203 TRACE("min=%d max=%d page=%d\n", si.nMin, si.nMax, si.nPage);
1204 editor->vert_si.nMax = si.nMax;
1205 editor->vert_si.nPage = si.nPage;
1206 if ((bScrollBarWillBeVisible || bScrollBarWasVisible) &&
1207 editor->styleFlags & WS_VSCROLL)
1208 {
1209 if (si.nMax > 0xFFFF)
1210 {
1211 /* Native scales the scrollbar info to 16-bit external values. */
1212 si.nPos = MulDiv(si.nPos, 0xFFFF, si.nMax);
1213 si.nMax = 0xFFFF;
1214 }
1215 if (editor->hWnd) {
1216 SetScrollInfo(editor->hWnd, SB_VERT, &si, TRUE);
1217 } else {
1218 ITextHost_TxSetScrollRange(editor->texthost, SB_VERT, si.nMin, si.nMax, FALSE);
1219 ITextHost_TxSetScrollPos(editor->texthost, SB_VERT, si.nPos, TRUE);
1220 }
1221 /* SetScrollInfo or SetScrollRange change scrollbar visibility. */
1222 bScrollBarWasVisible = ME_PostSetScrollRangeVisibility(&si);
1223 }
1224 }
1225
1226 if (editor->styleFlags & WS_VSCROLL)
1227 {
1228 if (si.fMask & SIF_DISABLENOSCROLL) {
1229 bScrollBarWillBeVisible = TRUE;
1230 } else if (!(editor->styleFlags & WS_VSCROLL)) {
1231 bScrollBarWillBeVisible = FALSE;
1232 }
1233
1234 if (bScrollBarWasVisible != bScrollBarWillBeVisible)
1235 ITextHost_TxShowScrollBar(editor->texthost, SB_VERT,
1236 bScrollBarWillBeVisible);
1237 }
1238 }
1239
1240 void ME_EnsureVisible(ME_TextEditor *editor, ME_Cursor *pCursor)
1241 {
1242 ME_Run *pRun = &pCursor->pRun->member.run;
1243 ME_DisplayItem *pRow = ME_FindItemBack(pCursor->pRun, diStartRow);
1244 ME_DisplayItem *pPara = pCursor->pPara;
1245 int x, y, yheight;
1246
1247 assert(pRow);
1248 assert(pPara);
1249
1250 if (editor->styleFlags & ES_AUTOHSCROLL)
1251 {
1252 x = pRun->pt.x + ME_PointFromChar(editor, pRun, pCursor->nOffset);
1253 if (x > editor->horz_si.nPos + editor->sizeWindow.cx)
1254 x = x + 1 - editor->sizeWindow.cx;
1255 else if (x > editor->horz_si.nPos)
1256 x = editor->horz_si.nPos;
1257
1258 if (~editor->styleFlags & ES_AUTOVSCROLL)
1259 {
1260 ME_HScrollAbs(editor, x);
1261 return;
1262 }
1263 } else {
1264 if (~editor->styleFlags & ES_AUTOVSCROLL)
1265 return;
1266 x = editor->horz_si.nPos;
1267 }
1268
1269 y = pPara->member.para.pt.y + pRow->member.row.pt.y;
1270 yheight = pRow->member.row.nHeight;
1271
1272 if (y < editor->vert_si.nPos)
1273 ME_ScrollAbs(editor, x, y);
1274 else if (y + yheight > editor->vert_si.nPos + editor->sizeWindow.cy)
1275 ME_ScrollAbs(editor, x, y + yheight - editor->sizeWindow.cy);
1276 else if (x != editor->horz_si.nPos)
1277 ME_ScrollAbs(editor, x, editor->vert_si.nPos);
1278 }
1279
1280
1281 void
1282 ME_InvalidateSelection(ME_TextEditor *editor)
1283 {
1284 ME_DisplayItem *para1, *para2;
1285 int nStart, nEnd;
1286 int len = ME_GetTextLength(editor);
1287
1288 ME_GetSelectionOfs(editor, &nStart, &nEnd);
1289 /* if both old and new selection are 0-char (= caret only), then
1290 there's no (inverted) area to be repainted, neither old nor new */
1291 if (nStart == nEnd && editor->nLastSelStart == editor->nLastSelEnd)
1292 return;
1293 ME_WrapMarkedParagraphs(editor);
1294 ME_GetSelectionParas(editor, &para1, &para2);
1295 assert(para1->type == diParagraph);
1296 assert(para2->type == diParagraph);
1297 /* last selection markers aren't always updated, which means
1298 * they can point past the end of the document */
1299 if (editor->nLastSelStart > len || editor->nLastSelEnd > len) {
1300 ME_MarkForPainting(editor,
1301 ME_FindItemFwd(editor->pBuffer->pFirst, diParagraph),
1302 editor->pBuffer->pLast);
1303 } else {
1304 /* if the start part of selection is being expanded or contracted... */
1305 if (nStart < editor->nLastSelStart) {
1306 ME_MarkForPainting(editor, para1, editor->pLastSelStartPara->member.para.next_para);
1307 } else if (nStart > editor->nLastSelStart) {
1308 ME_MarkForPainting(editor, editor->pLastSelStartPara, para1->member.para.next_para);
1309 }
1310
1311 /* if the end part of selection is being contracted or expanded... */
1312 if (nEnd < editor->nLastSelEnd) {
1313 ME_MarkForPainting(editor, para2, editor->pLastSelEndPara->member.para.next_para);
1314 } else if (nEnd > editor->nLastSelEnd) {
1315 ME_MarkForPainting(editor, editor->pLastSelEndPara, para2->member.para.next_para);
1316 }
1317 }
1318
1319 ME_InvalidateMarkedParagraphs(editor);
1320 /* remember the last invalidated position */
1321 ME_GetSelectionOfs(editor, &editor->nLastSelStart, &editor->nLastSelEnd);
1322 ME_GetSelectionParas(editor, &editor->pLastSelStartPara, &editor->pLastSelEndPara);
1323 assert(editor->pLastSelStartPara->type == diParagraph);
1324 assert(editor->pLastSelEndPara->type == diParagraph);
1325 }
1326
1327 BOOL
1328 ME_SetZoom(ME_TextEditor *editor, int numerator, int denominator)
1329 {
1330 /* TODO: Zoom images and objects */
1331
1332 if (numerator == 0 && denominator == 0)
1333 {
1334 editor->nZoomNumerator = editor->nZoomDenominator = 0;
1335 return TRUE;
1336 }
1337 if (numerator <= 0 || denominator <= 0)
1338 return FALSE;
1339 if (numerator * 64 <= denominator || numerator / denominator >= 64)
1340 return FALSE;
1341
1342 editor->nZoomNumerator = numerator;
1343 editor->nZoomDenominator = denominator;
1344
1345 ME_RewrapRepaint(editor);
1346 return TRUE;
1347 }
Maarten's multimedia branch