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push f2fb4b43e6a5ad960b5745b9c70e0a8fefaca935
[wine/hacks.git] / dlls / riched20 / paint.c
blob03a588c2aaef0a234f2cd025d6764e0d0085e93c
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);
36 item = editor->pBuffer->pFirst->next;
37 c.pt.y -= yoffset;
38 while(item != editor->pBuffer->pLast) {
39 int ye;
40 assert(item->type == diParagraph);
41 ye = c.pt.y + item->member.para.nHeight;
42 if (!bOnlyNew || (item->member.para.nFlags & MEPF_REPAINT))
43 {
44 BOOL bPaint = (rcUpdate == NULL);
45 if (rcUpdate)
46 bPaint = c.pt.y<rcUpdate->bottom &&
47 c.pt.y+item->member.para.nHeight>rcUpdate->top;
48 if (bPaint)
49 {
50 ME_DrawParagraph(&c, item);
51 if (!rcUpdate || (rcUpdate->top<=c.pt.y && rcUpdate->bottom>=ye))
52 item->member.para.nFlags &= ~MEPF_REPAINT;
53 }
54 }
55 c.pt.y = ye;
56 item = item->member.para.next_para;
57 }
58 if (c.pt.y<c.rcView.bottom) {
59 RECT rc;
60 int xs = c.rcView.left, xe = c.rcView.right;
61 int ys = c.pt.y, ye = c.rcView.bottom;
62
63 if (bOnlyNew)
64 {
65 int y1 = editor->nTotalLength-yoffset, y2 = editor->nLastTotalLength-yoffset;
66 if (y1<y2)
67 ys = y1, ye = y2+1;
68 else
69 ys = ye;
70 }
71
72 if (rcUpdate && ys!=ye)
73 {
74 xs = rcUpdate->left, xe = rcUpdate->right;
75 if (rcUpdate->top > ys)
76 ys = rcUpdate->top;
77 if (rcUpdate->bottom < ye)
78 ye = rcUpdate->bottom;
79 }
80
81 if (ye>ys) {
82 rc.left = xs;
83 rc.top = ys;
84 rc.right = xe;
85 rc.bottom = ye;
86 FillRect(hDC, &rc, c.editor->hbrBackground);
87 }
88 if (ys == c.pt.y) /* don't overwrite the top bar */
89 ys++;
90 }
91 if (editor->nTotalLength != editor->nLastTotalLength)
92 ME_SendRequestResize(editor, FALSE);
93 editor->nLastTotalLength = editor->nTotalLength;
94 ME_DestroyContext(&c);
95 }
96
97 void ME_Repaint(ME_TextEditor *editor)
98 {
99 if (ME_WrapMarkedParagraphs(editor))
100 {
101 ME_UpdateScrollBar(editor);
102 FIXME("ME_Repaint had to call ME_WrapMarkedParagraphs\n");
103 }
104 ME_SendOldNotify(editor, EN_UPDATE);
105 UpdateWindow(editor->hWnd);
106 }
107
108 void ME_UpdateRepaint(ME_TextEditor *editor)
109 {
110 /* Should be called whenever the contents of the control have changed */
111 ME_Cursor *pCursor;
112
113 if (!editor->bRedraw) return;
114 if (ME_WrapMarkedParagraphs(editor))
115 ME_UpdateScrollBar(editor);
116
117 /* Ensure that the cursor is visible */
118 pCursor = &editor->pCursors[0];
119 ME_EnsureVisible(editor, pCursor->pRun);
120
121 /* send EN_CHANGE if the event mask asks for it */
122 if(editor->nEventMask & ENM_CHANGE)
123 {
124 editor->nEventMask &= ~ENM_CHANGE;
125 ME_SendOldNotify(editor, EN_CHANGE);
126 editor->nEventMask |= ENM_CHANGE;
127 }
128 ME_Repaint(editor);
129 ME_SendSelChange(editor);
130 }
131
132 void
133 ME_RewrapRepaint(ME_TextEditor *editor)
134 {
135 /* RewrapRepaint should be called whenever the control has changed in
136 * looks, but not content. Like resizing. */
137
138 ME_MarkAllForWrapping(editor);
139 if (editor->bRedraw)
140 {
141 ME_WrapMarkedParagraphs(editor);
142 ME_UpdateScrollBar(editor);
143 ME_Repaint(editor);
144 }
145 }
146
147 int ME_twips2pointsX(ME_Context *c, int x)
148 {
149 if (c->editor->nZoomNumerator == 0)
150 return x * c->dpi.cx / 1440;
151 else
152 return x * c->dpi.cx * c->editor->nZoomNumerator / 1440 / c->editor->nZoomDenominator;
153 }
154
155 int ME_twips2pointsY(ME_Context *c, int y)
156 {
157 if (c->editor->nZoomNumerator == 0)
158 return y * c->dpi.cy / 1440;
159 else
160 return y * c->dpi.cy * c->editor->nZoomNumerator / 1440 / c->editor->nZoomDenominator;
161 }
162
163 static void ME_DrawTextWithStyle(ME_Context *c, int x, int y, LPCWSTR szText, int nChars,
164 ME_Style *s, int *width, int nSelFrom, int nSelTo, int ymin, int cy) {
165 HDC hDC = c->hDC;
166 HGDIOBJ hOldFont;
167 COLORREF rgbOld;
168 int yOffset = 0, yTwipsOffset = 0;
169 SIZE sz;
170 COLORREF rgb;
171
172 hOldFont = ME_SelectStyleFont(c, s);
173 if ((s->fmt.dwMask & CFM_LINK) && (s->fmt.dwEffects & CFE_LINK))
174 rgb = RGB(0,0,255);
175 else if ((s->fmt.dwMask & CFM_COLOR) && (s->fmt.dwEffects & CFE_AUTOCOLOR))
176 rgb = GetSysColor(COLOR_WINDOWTEXT);
177 else
178 rgb = s->fmt.crTextColor;
179 rgbOld = SetTextColor(hDC, rgb);
180 if ((s->fmt.dwMask & s->fmt.dwEffects) & CFM_OFFSET) {
181 yTwipsOffset = s->fmt.yOffset;
182 }
183 if ((s->fmt.dwMask & s->fmt.dwEffects) & (CFM_SUPERSCRIPT | CFM_SUBSCRIPT)) {
184 if (s->fmt.dwEffects & CFE_SUPERSCRIPT) yTwipsOffset = s->fmt.yHeight/3;
185 if (s->fmt.dwEffects & CFE_SUBSCRIPT) yTwipsOffset = -s->fmt.yHeight/12;
186 }
187 if (yTwipsOffset)
188 yOffset = ME_twips2pointsY(c, yTwipsOffset);
189 ExtTextOutW(hDC, x, y-yOffset, 0, NULL, szText, nChars, NULL);
190 GetTextExtentPoint32W(hDC, szText, nChars, &sz);
191 if (width) *width = sz.cx;
192 if (s->fmt.dwMask & CFM_UNDERLINETYPE)
193 {
194 HPEN hPen;
195 switch (s->fmt.bUnderlineType)
196 {
197 case CFU_UNDERLINE:
198 case CFU_UNDERLINEWORD: /* native seems to map it to simple underline (MSDN) */
199 case CFU_UNDERLINEDOUBLE: /* native seems to map it to simple underline (MSDN) */
200 hPen = CreatePen(PS_SOLID, 1, rgb);
201 break;
202 case CFU_UNDERLINEDOTTED:
203 hPen = CreatePen(PS_DOT, 1, rgb);
204 break;
205 default:
206 WINE_FIXME("Unknown underline type (%u)\n", s->fmt.bUnderlineType);
207 /* fall through */
208 case CFU_CF1UNDERLINE: /* this type is supported in the font, do nothing */
209 case CFU_UNDERLINENONE:
210 hPen = NULL;
211 break;
212 }
213 if (hPen != NULL)
214 {
215 HPEN hOldPen = SelectObject(hDC, hPen);
216 /* FIXME: should use textmetrics info for Descent info */
217 MoveToEx(hDC, x, y - yOffset + 1, NULL);
218 LineTo(hDC, x + sz.cx, y - yOffset + 1);
219 SelectObject(hDC, hOldPen);
220 DeleteObject(hPen);
221 }
222 }
223 if (nSelFrom < nChars && nSelTo >= 0 && nSelFrom<nSelTo)
224 {
225 if (nSelFrom < 0) nSelFrom = 0;
226 if (nSelTo > nChars) nSelTo = nChars;
227 GetTextExtentPoint32W(hDC, szText, nSelFrom, &sz);
228 x += sz.cx;
229 GetTextExtentPoint32W(hDC, szText+nSelFrom, nSelTo-nSelFrom, &sz);
230
231 /* Invert selection if not hidden by EM_HIDESELECTION */
232 if (c->editor->bHideSelection == FALSE)
233 PatBlt(hDC, x, ymin, sz.cx, cy, DSTINVERT);
234 }
235 SetTextColor(hDC, rgbOld);
236 ME_UnselectStyleFont(c, s, hOldFont);
237 }
238
239 static void ME_DebugWrite(HDC hDC, const POINT *pt, LPCWSTR szText) {
240 int align = SetTextAlign(hDC, TA_LEFT|TA_TOP);
241 HGDIOBJ hFont = SelectObject(hDC, GetStockObject(DEFAULT_GUI_FONT));
242 COLORREF color = SetTextColor(hDC, RGB(128,128,128));
243 TextOutW(hDC, pt->x, pt->y, szText, lstrlenW(szText));
244 SelectObject(hDC, hFont);
245 SetTextAlign(hDC, align);
246 SetTextColor(hDC, color);
247 }
248
249 static void ME_DrawGraphics(ME_Context *c, int x, int y, ME_Run *run,
250 ME_Paragraph *para, BOOL selected) {
251 SIZE sz;
252 int xs, ys, xe, ye, h, ym, width, eyes;
253 ME_GetGraphicsSize(c->editor, run, &sz);
254 xs = run->pt.x;
255 ys = y-sz.cy;
256 xe = xs+sz.cx;
257 ye = y;
258 h = ye-ys;
259 ym = ys+h/4;
260 width = sz.cx;
261 eyes = width/8;
262 /* draw a smiling face :) */
263 Ellipse(c->hDC, xs, ys, xe, ye);
264 Ellipse(c->hDC, xs+width/8, ym, x+width/8+eyes, ym+eyes);
265 Ellipse(c->hDC, xs+7*width/8-eyes, ym, xs+7*width/8, ym+eyes);
266 MoveToEx(c->hDC, xs+width/8, ys+3*h/4-eyes, NULL);
267 LineTo(c->hDC, xs+width/8, ys+3*h/4);
268 LineTo(c->hDC, xs+7*width/8, ys+3*h/4);
269 LineTo(c->hDC, xs+7*width/8, ys+3*h/4-eyes);
270 if (selected)
271 {
272 /* descent is usually (always?) 0 for graphics */
273 PatBlt(c->hDC, x, y-run->nAscent, sz.cx, run->nAscent+run->nDescent, DSTINVERT);
274 }
275 }
276
277 static void ME_DrawRun(ME_Context *c, int x, int y, ME_DisplayItem *rundi, ME_Paragraph *para)
278 {
279 ME_Run *run = &rundi->member.run;
280 ME_DisplayItem *start;
281 int runofs = run->nCharOfs+para->nCharOfs;
282 int nSelFrom, nSelTo;
283 const WCHAR wszSpace[] = {' ', 0};
284
285 if (run->nFlags & MERF_HIDDEN)
286 return;
287
288 start = ME_FindItemBack(rundi, diStartRow);
289 ME_GetSelection(c->editor, &nSelFrom, &nSelTo);
290
291 /* Draw selected end-of-paragraph mark */
292 if (run->nFlags & MERF_ENDPARA && runofs >= nSelFrom && runofs < nSelTo)
293 ME_DrawTextWithStyle(c, x, y, wszSpace, 1, run->style, NULL, 0, 1,
294 c->pt.y + start->member.row.nYPos,
295 start->member.row.nHeight);
296
297 /* you can always comment it out if you need visible paragraph marks */
298 if (run->nFlags & (MERF_ENDPARA | MERF_TAB | MERF_CELL))
299 return;
300
301 if (run->nFlags & MERF_GRAPHICS)
302 ME_DrawGraphics(c, x, y, run, para, (runofs >= nSelFrom) && (runofs < nSelTo));
303 else
304 {
305 if (c->editor->cPasswordMask)
306 {
307 ME_String *szMasked = ME_MakeStringR(c->editor->cPasswordMask,ME_StrVLen(run->strText));
308 ME_DrawTextWithStyle(c, x, y,
309 szMasked->szData, ME_StrVLen(szMasked), run->style, NULL,
310 nSelFrom-runofs,nSelTo-runofs, c->pt.y+start->member.row.nYPos, start->member.row.nHeight);
311 ME_DestroyString(szMasked);
312 }
313 else
314 ME_DrawTextWithStyle(c, x, y,
315 run->strText->szData, ME_StrVLen(run->strText), run->style, NULL,
316 nSelFrom-runofs,nSelTo-runofs, c->pt.y+start->member.row.nYPos, start->member.row.nHeight);
317 }
318 }
319
320 static struct {unsigned width_num : 4, width_den : 4, pen_style : 4, dble : 1;} border_details[] = {
321 /* none */ {0, 0, PS_SOLID, FALSE},
322 /* 3/4 */ {3, 4, PS_SOLID, FALSE},
323 /* 1 1/2 */ {3, 2, PS_SOLID, FALSE},
324 /* 2 1/4 */ {9, 4, PS_SOLID, FALSE},
325 /* 3 */ {3, 1, PS_SOLID, FALSE},
326 /* 4 1/2 */ {9, 2, PS_SOLID, FALSE},
327 /* 6 */ {6, 1, PS_SOLID, FALSE},
328 /* 3/4 double */ {3, 4, PS_SOLID, TRUE},
329 /* 1 1/2 double */ {3, 2, PS_SOLID, TRUE},
330 /* 2 1/4 double */ {9, 4, PS_SOLID, TRUE},
331 /* 3/4 gray */ {3, 4, PS_DOT /* FIXME */, FALSE},
332 /* 1 1/2 dashed */ {3, 2, PS_DASH, FALSE},
333 };
334
335 static COLORREF pen_colors[16] = {
336 /* Black */ RGB(0x00, 0x00, 0x00), /* Blue */ RGB(0x00, 0x00, 0xFF),
337 /* Cyan */ RGB(0x00, 0xFF, 0xFF), /* Green */ RGB(0x00, 0xFF, 0x00),
338 /* Magenta */ RGB(0xFF, 0x00, 0xFF), /* Red */ RGB(0xFF, 0x00, 0x00),
339 /* Yellow */ RGB(0xFF, 0xFF, 0x00), /* White */ RGB(0xFF, 0xFF, 0xFF),
340 /* Dark blue */ RGB(0x00, 0x00, 0x80), /* Dark cyan */ RGB(0x00, 0x80, 0x80),
341 /* Dark green */ RGB(0x00, 0x80, 0x80), /* Dark magenta */ RGB(0x80, 0x00, 0x80),
342 /* Dark red */ RGB(0x80, 0x00, 0x00), /* Dark yellow */ RGB(0x80, 0x80, 0x00),
343 /* Dark gray */ RGB(0x80, 0x80, 0x80), /* Light gray */ RGB(0xc0, 0xc0, 0xc0),
344 };
345
346 static int ME_GetBorderPenWidth(ME_TextEditor* editor, int idx)
347 {
348 int width;
349
350 if (editor->nZoomNumerator == 0)
351 {
352 width = border_details[idx].width_num + border_details[idx].width_den / 2;
353 width /= border_details[idx].width_den;
354 }
355 else
356 {
357 width = border_details[idx].width_num * editor->nZoomNumerator;
358 width += border_details[idx].width_den * editor->nZoomNumerator / 2;
359 width /= border_details[idx].width_den * editor->nZoomDenominator;
360 }
361 return width;
362 }
363
364 int ME_GetParaBorderWidth(ME_TextEditor* editor, int flags)
365 {
366 int idx = (flags >> 8) & 0xF;
367 int width;
368
369 if (idx >= sizeof(border_details) / sizeof(border_details[0]))
370 {
371 FIXME("Unsupported border value %d\n", idx);
372 return 0;
373 }
374 width = ME_GetBorderPenWidth(editor, idx);
375 if (border_details[idx].dble) width = width * 2 + 1;
376 return width;
377 }
378
379 int ME_GetParaLineSpace(ME_Context* c, ME_Paragraph* para)
380 {
381 int sp = 0, ls = 0;
382 if (!(para->pFmt->dwMask & PFM_LINESPACING)) return 0;
383
384 /* FIXME: how to compute simply the line space in ls ??? */
385 /* FIXME: does line spacing include the line itself ??? */
386 switch (para->pFmt->bLineSpacingRule)
387 {
388 case 0: sp = ls; break;
389 case 1: sp = (3 * ls) / 2; break;
390 case 2: sp = 2 * ls; break;
391 case 3: sp = ME_twips2pointsY(c, para->pFmt->dyLineSpacing); if (sp < ls) sp = ls; break;
392 case 4: sp = ME_twips2pointsY(c, para->pFmt->dyLineSpacing); break;
393 case 5: sp = para->pFmt->dyLineSpacing / 20; break;
394 default: FIXME("Unsupported spacing rule value %d\n", para->pFmt->bLineSpacingRule);
395 }
396 if (c->editor->nZoomNumerator == 0)
397 return sp;
398 else
399 return sp * c->editor->nZoomNumerator / c->editor->nZoomDenominator;
400 }
401
402 static int ME_DrawParaDecoration(ME_Context* c, ME_Paragraph* para, int y)
403 {
404 int idx, border_width;
405 int ybefore, yafter;
406 RECT rc;
407
408 if (!(para->pFmt->dwMask & (PFM_BORDER | PFM_SPACEBEFORE | PFM_SPACEAFTER))) return 0;
409
410 if (para->pFmt->dwMask & PFM_SPACEBEFORE)
411 {
412 rc.left = c->rcView.left;
413 rc.right = c->rcView.right;
414 rc.top = y;
415 ybefore = ME_twips2pointsY(c, para->pFmt->dySpaceBefore);
416 rc.bottom = y + ybefore;
417 FillRect(c->hDC, &rc, c->editor->hbrBackground);
418 }
419 else ybefore = 0;
420 if (para->pFmt->dwMask & PFM_SPACEAFTER)
421 {
422 rc.left = c->rcView.left;
423 rc.right = c->rcView.right;
424 rc.bottom = y + para->nHeight;
425 yafter = ME_twips2pointsY(c, para->pFmt->dySpaceAfter);
426 rc.top = rc.bottom - yafter;
427 FillRect(c->hDC, &rc, c->editor->hbrBackground);
428 }
429 else yafter = 0;
430
431 border_width = 0;
432 idx = (para->pFmt->wBorders >> 8) & 0xF;
433 if ((para->pFmt->dwMask & PFM_BORDER) && idx != 0 && (para->pFmt->wBorders & 0xF)) {
434 int pen_width;
435 COLORREF pencr;
436 HPEN pen = NULL, oldpen = NULL;
437 POINT pt;
438
439 if (para->pFmt->wBorders & 0x00B0)
440 FIXME("Unsupported border flags %x\n", para->pFmt->wBorders);
441 border_width = ME_GetParaBorderWidth(c->editor, para->pFmt->wBorders);
442
443 if (para->pFmt->wBorders & 64) /* autocolor */
444 pencr = GetSysColor(COLOR_WINDOWTEXT);
445 else
446 pencr = pen_colors[(para->pFmt->wBorders >> 12) & 0xF];
447
448 pen_width = ME_GetBorderPenWidth(c->editor, idx);
449 pen = CreatePen(border_details[idx].pen_style, pen_width, pencr);
450 oldpen = SelectObject(c->hDC, pen);
451 MoveToEx(c->hDC, 0, 0, &pt);
452
453 /* before & after spaces are not included in border */
454 if (para->pFmt->wBorders & 1)
455 {
456 MoveToEx(c->hDC, c->rcView.left, y + ybefore, NULL);
457 LineTo(c->hDC, c->rcView.left, y + para->nHeight - yafter);
458 if (border_details[idx].dble) {
459 MoveToEx(c->hDC, c->rcView.left + pen_width + 1, y + ybefore + pen_width + 1, NULL);
460 LineTo(c->hDC, c->rcView.left + pen_width + 1, y + para->nHeight - yafter - pen_width - 1);
461 }
462 }
463 if (para->pFmt->wBorders & 2)
464 {
465 MoveToEx(c->hDC, c->rcView.right, y + ybefore, NULL);
466 LineTo(c->hDC, c->rcView.right, y + para->nHeight - yafter);
467 if (border_details[idx].dble) {
468 MoveToEx(c->hDC, c->rcView.right - pen_width - 1, y + ybefore + pen_width + 1, NULL);
469 LineTo(c->hDC, c->rcView.right - pen_width - 1, y + para->nHeight - yafter - pen_width - 1);
470 }
471 }
472 if (para->pFmt->wBorders & 4)
473 {
474 MoveToEx(c->hDC, c->rcView.left, y + ybefore, NULL);
475 LineTo(c->hDC, c->rcView.right, y + ybefore);
476 if (border_details[idx].dble) {
477 MoveToEx(c->hDC, c->rcView.left + pen_width + 1, y + ybefore + pen_width + 1, NULL);
478 LineTo(c->hDC, c->rcView.right - pen_width - 1, y + ybefore + pen_width + 1);
479 }
480 }
481 if (para->pFmt->wBorders & 8)
482 {
483 MoveToEx(c->hDC, c->rcView.left, y + para->nHeight - yafter - 1, NULL);
484 LineTo(c->hDC, c->rcView.right, y + para->nHeight - yafter - 1);
485 if (border_details[idx].dble) {
486 MoveToEx(c->hDC, c->rcView.left + pen_width + 1, y + para->nHeight - yafter - 1 - pen_width - 1, NULL);
487 LineTo(c->hDC, c->rcView.right - pen_width - 1, y + para->nHeight - yafter - 1 - pen_width - 1);
488 }
489 }
490
491 MoveToEx(c->hDC, pt.x, pt.y, NULL);
492 SelectObject(c->hDC, oldpen);
493 DeleteObject(pen);
494 }
495 return ybefore +
496 ((para->pFmt->dwMask & PFM_BORDER) && (para->pFmt->wBorders & 4) ?
497 border_width : 0);
498 }
499
500 void ME_DrawParagraph(ME_Context *c, ME_DisplayItem *paragraph) {
501 int align = SetTextAlign(c->hDC, TA_BASELINE);
502 ME_DisplayItem *p;
503 ME_Run *run;
504 ME_Paragraph *para = NULL;
505 RECT rc, rcPara;
506 int y = c->pt.y;
507 int height = 0, baseline = 0, no=0, pno = 0;
508 int xs = 0, xe = 0;
509 BOOL visible = FALSE;
510 int nMargWidth = 0;
511
512 c->pt.x = c->rcView.left;
513 rcPara.left = c->rcView.left;
514 rcPara.right = c->rcView.right;
515 for (p = paragraph; p!=paragraph->member.para.next_para; p = p->next) {
516 switch(p->type) {
517 case diParagraph:
518 para = &p->member.para;
519 assert(para);
520 nMargWidth = ME_twips2pointsX(c, para->pFmt->dxStartIndent);
521 if (pno != 0)
522 nMargWidth += ME_twips2pointsX(c, para->pFmt->dxOffset);
523 xs = c->rcView.left+nMargWidth;
524 xe = c->rcView.right - ME_twips2pointsX(c, para->pFmt->dxRightIndent);
525 y += ME_DrawParaDecoration(c, para, y);
526 break;
527 case diStartRow:
528 y += height;
529 rcPara.top = y;
530 rcPara.bottom = y+p->member.row.nHeight;
531 visible = RectVisible(c->hDC, &rcPara);
532 if (visible) {
533 /* left margin */
534 rc.left = c->rcView.left;
535 rc.right = c->rcView.left+nMargWidth;
536 rc.top = y;
537 rc.bottom = y+p->member.row.nHeight;
538 FillRect(c->hDC, &rc, c->editor->hbrBackground);
539 /* right margin */
540 rc.left = xe;
541 rc.right = c->rcView.right;
542 FillRect(c->hDC, &rc, c->editor->hbrBackground);
543 rc.left = c->rcView.left+nMargWidth;
544 rc.right = xe;
545 FillRect(c->hDC, &rc, c->editor->hbrBackground);
546 }
547 if (me_debug)
548 {
549 const WCHAR wszRowDebug[] = {'r','o','w','[','%','d',']',0};
550 WCHAR buf[128];
551 POINT pt = c->pt;
552 wsprintfW(buf, wszRowDebug, no);
553 pt.y = 12+y;
554 ME_DebugWrite(c->hDC, &pt, buf);
555 }
556
557 height = p->member.row.nHeight;
558 baseline = p->member.row.nBaseline;
559 pno++;
560 break;
561 case diRun:
562 assert(para);
563 run = &p->member.run;
564 if (visible && me_debug) {
565 rc.left = c->rcView.left+run->pt.x;
566 rc.right = c->rcView.left+run->pt.x+run->nWidth;
567 rc.top = c->pt.y+run->pt.y;
568 rc.bottom = c->pt.y+run->pt.y+height;
569 TRACE("rc = (%d, %d, %d, %d)\n", rc.left, rc.top, rc.right, rc.bottom);
570 if (run->nFlags & MERF_SKIPPED)
571 DrawFocusRect(c->hDC, &rc);
572 else
573 FrameRect(c->hDC, &rc, GetSysColorBrush(COLOR_GRAYTEXT));
574 }
575 if (visible)
576 ME_DrawRun(c, run->pt.x, c->pt.y+run->pt.y+baseline, p, &paragraph->member.para);
577 if (me_debug)
578 {
579 /* I'm using %ls, hope wsprintfW is not going to use wrong (4-byte) WCHAR version */
580 const WCHAR wszRunDebug[] = {'[','%','d',':','%','x',']',' ','%','l','s',0};
581 WCHAR buf[2560];
582 POINT pt;
583 pt.x = run->pt.x;
584 pt.y = c->pt.y + run->pt.y;
585 wsprintfW(buf, wszRunDebug, no, p->member.run.nFlags, p->member.run.strText->szData);
586 ME_DebugWrite(c->hDC, &pt, buf);
587 }
588 /* c->pt.x += p->member.run.nWidth; */
589 break;
590 default:
591 break;
592 }
593 no++;
594 }
595 SetTextAlign(c->hDC, align);
596 }
597
598 void ME_ScrollAbs(ME_TextEditor *editor, int absY)
599 {
600 ME_Scroll(editor, absY, 1);
601 }
602
603 void ME_ScrollUp(ME_TextEditor *editor, int cy)
604 {
605 ME_Scroll(editor, cy, 2);
606 }
607
608 void ME_ScrollDown(ME_TextEditor *editor, int cy)
609 {
610 ME_Scroll(editor, cy, 3);
611 }
612
613 void ME_Scroll(ME_TextEditor *editor, int value, int type)
614 {
615 SCROLLINFO si;
616 int nOrigPos, nNewPos, nActualScroll;
617
618 nOrigPos = ME_GetYScrollPos(editor);
619
620 si.cbSize = sizeof(SCROLLINFO);
621 si.fMask = SIF_POS;
622
623 switch (type)
624 {
625 case 1:
626 /*Scroll absolutly*/
627 si.nPos = value;
628 break;
629 case 2:
630 /* Scroll up - towards the beginning of the document */
631 si.nPos = nOrigPos - value;
632 break;
633 case 3:
634 /* Scroll down - towards the end of the document */
635 si.nPos = nOrigPos + value;
636 break;
637 default:
638 FIXME("ME_Scroll called incorrectly\n");
639 si.nPos = 0;
640 }
641
642 nNewPos = SetScrollInfo(editor->hWnd, SB_VERT, &si, editor->bRedraw);
643 nActualScroll = nOrigPos - nNewPos;
644 if (editor->bRedraw)
645 {
646 if (abs(nActualScroll) > editor->sizeWindow.cy)
647 InvalidateRect(editor->hWnd, NULL, TRUE);
648 else
649 ScrollWindowEx(editor->hWnd, 0, nActualScroll, NULL, NULL, NULL, NULL, SW_INVALIDATE);
650 ME_Repaint(editor);
651 }
652
653 ME_UpdateScrollBar(editor);
654 }
655
656
657 void ME_UpdateScrollBar(ME_TextEditor *editor)
658 {
659 /* Note that this is the only funciton that should ever call SetScrolLInfo
660 * with SIF_PAGE or SIF_RANGE. SetScrollPos and SetScrollRange should never
661 * be used at all. */
662
663 HWND hWnd;
664 SCROLLINFO si;
665 BOOL bScrollBarWasVisible,bScrollBarWillBeVisible;
666
667 if (ME_WrapMarkedParagraphs(editor))
668 FIXME("ME_UpdateScrollBar had to call ME_WrapMarkedParagraphs\n");
669
670 hWnd = editor->hWnd;
671 si.cbSize = sizeof(si);
672 bScrollBarWasVisible = ME_GetYScrollVisible(editor);
673 bScrollBarWillBeVisible = editor->nHeight > editor->sizeWindow.cy;
674
675 if (bScrollBarWasVisible != bScrollBarWillBeVisible)
676 {
677 ShowScrollBar(hWnd, SB_VERT, bScrollBarWillBeVisible);
678 ME_MarkAllForWrapping(editor);
679 ME_WrapMarkedParagraphs(editor);
680 }
681
682 si.fMask = SIF_PAGE | SIF_RANGE;
683 if (GetWindowLongW(hWnd, GWL_STYLE) & ES_DISABLENOSCROLL)
684 si.fMask |= SIF_DISABLENOSCROLL;
685
686 si.nMin = 0;
687 si.nMax = editor->nTotalLength;
688
689 si.nPage = editor->sizeWindow.cy;
690
691 TRACE("min=%d max=%d page=%d\n", si.nMin, si.nMax, si.nPage);
692 SetScrollInfo(hWnd, SB_VERT, &si, TRUE);
693 }
694
695 int ME_GetYScrollPos(ME_TextEditor *editor)
696 {
697 SCROLLINFO si;
698 si.cbSize = sizeof(si);
699 si.fMask = SIF_POS;
700 return GetScrollInfo(editor->hWnd, SB_VERT, &si) ? si.nPos : 0;
701 }
702
703 BOOL ME_GetYScrollVisible(ME_TextEditor *editor)
704 { /* Returns true if the scrollbar is visible */
705 SCROLLBARINFO sbi;
706 sbi.cbSize = sizeof(sbi);
707 GetScrollBarInfo(editor->hWnd, OBJID_VSCROLL, &sbi);
708 return ((sbi.rgstate[0] & STATE_SYSTEM_INVISIBLE) == 0);
709 }
710
711 void ME_EnsureVisible(ME_TextEditor *editor, ME_DisplayItem *pRun)
712 {
713 ME_DisplayItem *pRow = ME_FindItemBack(pRun, diStartRow);
714 ME_DisplayItem *pPara = ME_FindItemBack(pRun, diParagraph);
715 int y, yrel, yheight, yold;
716
717 assert(pRow);
718 assert(pPara);
719
720 y = pPara->member.para.nYPos+pRow->member.row.nYPos;
721 yheight = pRow->member.row.nHeight;
722 yold = ME_GetYScrollPos(editor);
723 yrel = y - yold;
724
725 if (y < yold)
726 ME_ScrollAbs(editor,y);
727 else if (yrel + yheight > editor->sizeWindow.cy)
728 ME_ScrollAbs(editor,y+yheight-editor->sizeWindow.cy);
729 }
730
731
732 void
733 ME_InvalidateFromOfs(ME_TextEditor *editor, int nCharOfs)
734 {
735 RECT rc;
736 int x, y, height;
737 ME_Cursor tmp;
738
739 ME_RunOfsFromCharOfs(editor, nCharOfs, &tmp.pRun, &tmp.nOffset);
740 ME_GetCursorCoordinates(editor, &tmp, &x, &y, &height);
741
742 rc.left = 0;
743 rc.top = y;
744 rc.bottom = y + height;
745 rc.right = editor->rcFormat.right;
746 InvalidateRect(editor->hWnd, &rc, FALSE);
747 }
748
749
750 void
751 ME_InvalidateSelection(ME_TextEditor *editor)
752 {
753 ME_DisplayItem *para1, *para2;
754 int nStart, nEnd;
755 int len = ME_GetTextLength(editor);
756
757 ME_GetSelection(editor, &nStart, &nEnd);
758 /* if both old and new selection are 0-char (= caret only), then
759 there's no (inverted) area to be repainted, neither old nor new */
760 if (nStart == nEnd && editor->nLastSelStart == editor->nLastSelEnd)
761 return;
762 ME_WrapMarkedParagraphs(editor);
763 ME_GetSelectionParas(editor, &para1, &para2);
764 assert(para1->type == diParagraph);
765 assert(para2->type == diParagraph);
766 /* last selection markers aren't always updated, which means
767 they can point past the end of the document */
768 if (editor->nLastSelStart > len || editor->nLastSelEnd > len) {
769 ME_MarkForPainting(editor,
770 ME_FindItemFwd(editor->pBuffer->pFirst, diParagraph),
771 ME_FindItemFwd(editor->pBuffer->pFirst, diTextEnd));
772 } else {
773 /* if the start part of selection is being expanded or contracted... */
774 if (nStart < editor->nLastSelStart) {
775 ME_MarkForPainting(editor, para1, ME_FindItemFwd(editor->pLastSelStartPara, diParagraphOrEnd));
776 } else
777 if (nStart > editor->nLastSelStart) {
778 ME_MarkForPainting(editor, editor->pLastSelStartPara, ME_FindItemFwd(para1, diParagraphOrEnd));
779 }
780
781 /* if the end part of selection is being contracted or expanded... */
782 if (nEnd < editor->nLastSelEnd) {
783 ME_MarkForPainting(editor, para2, ME_FindItemFwd(editor->pLastSelEndPara, diParagraphOrEnd));
784 } else
785 if (nEnd > editor->nLastSelEnd) {
786 ME_MarkForPainting(editor, editor->pLastSelEndPara, ME_FindItemFwd(para2, diParagraphOrEnd));
787 }
788 }
789
790 ME_InvalidateMarkedParagraphs(editor);
791 /* remember the last invalidated position */
792 ME_GetSelection(editor, &editor->nLastSelStart, &editor->nLastSelEnd);
793 ME_GetSelectionParas(editor, &editor->pLastSelStartPara, &editor->pLastSelEndPara);
794 assert(editor->pLastSelStartPara->type == diParagraph);
795 assert(editor->pLastSelEndPara->type == diParagraph);
796 }
797
798 void
799 ME_QueueInvalidateFromCursor(ME_TextEditor *editor, int nCursor)
800 {
801 editor->nInvalidOfs = ME_GetCursorOfs(editor, nCursor);
802 }
803
804
805 BOOL
806 ME_SetZoom(ME_TextEditor *editor, int numerator, int denominator)
807 {
808 /* TODO: Zoom images and objects */
809
810 if (numerator != 0)
811 {
812 if (denominator == 0)
813 return FALSE;
814 if (1.0 / 64.0 > (float)numerator / (float)denominator
815 || (float)numerator / (float)denominator > 64.0)
816 return FALSE;
817 }
818
819 editor->nZoomNumerator = numerator;
820 editor->nZoomDenominator = denominator;
821
822 ME_RewrapRepaint(editor);
823 return TRUE;
824 }
useful hacks and other patches not (yet) suitable for mainline