2 * RichEdit - painting functions
4 * Copyright 2004 by Krzysztof Foltman
6 * This library is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Lesser General Public
8 * License as published by the Free Software Foundation; either
9 * version 2.1 of the License, or (at your option) any later version.
11 * This library is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * Lesser General Public License for more details.
16 * You should have received a copy of the GNU Lesser General Public
17 * License along with this library; if not, write to the Free Software
18 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
23 WINE_DEFAULT_DEBUG_CHANNEL(richedit);
25 void ME_PaintContent(ME_TextEditor *editor, HDC hDC, BOOL bOnlyNew, RECT *rcUpdate) {
31 yoffset = ME_GetYScrollPos(editor);
32 ME_InitContext(&c, editor, hDC);
33 SetBkMode(hDC, TRANSPARENT);
35 item = editor->pBuffer->pFirst->next;
37 while(item != editor->pBuffer->pLast) {
39 assert(item->type == diParagraph);
40 ye = c.pt.y + item->member.para.nHeight;
41 if (!bOnlyNew || (item->member.para.nFlags & MEPF_REPAINT))
43 BOOL bPaint = (rcUpdate == NULL);
45 bPaint = c.pt.y<rcUpdate->bottom &&
46 c.pt.y+item->member.para.nHeight>rcUpdate->top;
49 ME_DrawParagraph(&c, item);
50 if (!rcUpdate || (rcUpdate->top<=c.pt.y && rcUpdate->bottom>=ye))
51 item->member.para.nFlags &= ~MEPF_REPAINT;
55 item = item->member.para.next_para;
57 if (c.pt.y<c.rcView.bottom) {
59 int xs = c.rcView.left, xe = c.rcView.right;
60 int ys = c.pt.y, ye = c.rcView.bottom;
64 int y1 = editor->nTotalLength-yoffset, y2 = editor->nLastTotalLength-yoffset;
71 if (rcUpdate && ys!=ye)
73 xs = rcUpdate->left, xe = rcUpdate->right;
74 if (rcUpdate->top > ys)
76 if (rcUpdate->bottom < ye)
77 ye = rcUpdate->bottom;
82 hbr = CreateSolidBrush(ME_GetBackColor(c.editor));
87 FillRect(hDC, &rc, hbr);
90 if (ys == c.pt.y) /* don't overwrite the top bar */
93 editor->nLastTotalLength = editor->nTotalLength;
94 ME_DestroyContext(&c);
97 static void ME_MarkParagraphRange(ME_TextEditor *editor, ME_DisplayItem *p1,
98 ME_DisplayItem *p2, int nFlags)
103 p1->member.para.nFlags |= nFlags;
106 if (p1->member.para.nCharOfs > p2->member.para.nCharOfs)
107 p3 = p1, p1 = p2, p2 = p3;
109 p1->member.para.nFlags |= nFlags;
111 p1 = p1->member.para.next_para;
112 p1->member.para.nFlags |= nFlags;
116 static void ME_MarkOffsetRange(ME_TextEditor *editor, int from, int to, int nFlags)
119 ME_CursorFromCharOfs(editor, from, &c1);
120 ME_CursorFromCharOfs(editor, to, &c2);
122 ME_MarkParagraphRange(editor, ME_GetParagraph(c1.pRun), ME_GetParagraph(c2.pRun), nFlags);
125 static void ME_MarkSelectionForRepaint(ME_TextEditor *editor)
127 int from, to, from2, to2, end;
129 end = ME_GetTextLength(editor);
130 ME_GetSelection(editor, &from, &to);
131 from2 = editor->nLastSelStart;
132 to2 = editor->nLastSelEnd;
133 if (from<from2) ME_MarkOffsetRange(editor, from, from2, MEPF_REPAINT);
134 if (from>from2) ME_MarkOffsetRange(editor, from2, from, MEPF_REPAINT);
135 if (to<to2) ME_MarkOffsetRange(editor, to, to2, MEPF_REPAINT);
136 if (to>to2) ME_MarkOffsetRange(editor, to2, to, MEPF_REPAINT);
138 editor->nLastSelStart = from;
139 editor->nLastSelEnd = to;
142 void ME_Repaint(ME_TextEditor *editor)
144 ME_Cursor *pCursor = &editor->pCursors[0];
145 ME_DisplayItem *pRun = NULL;
148 int nCharOfs = ME_CharOfsFromRunOfs(editor, pCursor->pRun, pCursor->nOffset);
150 ME_RunOfsFromCharOfs(editor, nCharOfs, &pRun, &nOffset);
151 assert(pRun == pCursor->pRun);
152 assert(nOffset == pCursor->nOffset);
153 ME_MarkSelectionForRepaint(editor);
154 if (ME_WrapMarkedParagraphs(editor)) {
155 ME_UpdateScrollBar(editor);
157 hDC = GetDC(editor->hWnd);
158 ME_HideCaret(editor);
159 ME_PaintContent(editor, hDC, TRUE, NULL);
160 ReleaseDC(editor->hWnd, hDC);
161 ME_ShowCaret(editor);
162 ME_EnsureVisible(editor, pCursor->pRun);
165 void ME_UpdateRepaint(ME_TextEditor *editor)
168 InvalidateRect(editor->hWnd, NULL, TRUE);
170 ME_SendOldNotify(editor, EN_CHANGE);
172 ME_SendOldNotify(editor, EN_UPDATE);
173 ME_SendSelChange(editor);
178 ME_RewrapRepaint(ME_TextEditor *editor)
180 ME_MarkAllForWrapping(editor);
181 ME_WrapMarkedParagraphs(editor);
182 ME_UpdateScrollBar(editor);
187 static void ME_DrawTextWithStyle(ME_Context *c, int x, int y, LPCWSTR szText, int nChars,
188 ME_Style *s, int *width, int nSelFrom, int nSelTo, int ymin, int cy) {
191 COLORREF rgbOld, rgbBack;
192 int yOffset = 0, yTwipsOffset = 0;
193 hOldFont = ME_SelectStyleFont(c->editor, hDC, s);
194 rgbBack = ME_GetBackColor(c->editor);
195 if ((s->fmt.dwMask & CFM_COLOR) && (s->fmt.dwEffects & CFE_AUTOCOLOR))
196 rgbOld = SetTextColor(hDC, GetSysColor(COLOR_WINDOWTEXT));
198 rgbOld = SetTextColor(hDC, s->fmt.crTextColor);
199 if ((s->fmt.dwMask & s->fmt.dwEffects) & CFM_OFFSET) {
200 yTwipsOffset = s->fmt.yOffset;
202 if ((s->fmt.dwMask & s->fmt.dwEffects) & (CFM_SUPERSCRIPT | CFM_SUBSCRIPT)) {
203 if (s->fmt.dwEffects & CFE_SUPERSCRIPT) yTwipsOffset = s->fmt.yHeight/3;
204 if (s->fmt.dwEffects & CFE_SUBSCRIPT) yTwipsOffset = -s->fmt.yHeight/12;
211 if (c->editor->nZoomNumerator)
213 numerator = c->editor->nZoomNumerator;
214 denominator = c->editor->nZoomDenominator;
216 yOffset = yTwipsOffset * GetDeviceCaps(hDC, LOGPIXELSY) * numerator / denominator / 1440;
218 ExtTextOutW(hDC, x, y-yOffset, 0, NULL, szText, nChars, NULL);
221 GetTextExtentPoint32W(hDC, szText, nChars, &sz);
224 if (nSelFrom < nChars && nSelTo >= 0 && nSelFrom<nSelTo)
227 if (nSelFrom < 0) nSelFrom = 0;
228 if (nSelTo > nChars) nSelTo = nChars;
229 GetTextExtentPoint32W(hDC, szText, nSelFrom, &sz);
231 GetTextExtentPoint32W(hDC, szText+nSelFrom, nSelTo-nSelFrom, &sz);
232 PatBlt(hDC, x, ymin, sz.cx, cy, DSTINVERT);
234 SetTextColor(hDC, rgbOld);
235 ME_UnselectStyleFont(c->editor, hDC, s, hOldFont);
238 static void ME_DebugWrite(HDC hDC, POINT *pt, WCHAR *szText) {
239 int align = SetTextAlign(hDC, TA_LEFT|TA_TOP);
240 HGDIOBJ hFont = SelectObject(hDC, GetStockObject(DEFAULT_GUI_FONT));
241 COLORREF color = SetTextColor(hDC, RGB(128,128,128));
242 TextOutW(hDC, pt->x, pt->y, szText, lstrlenW(szText));
243 SelectObject(hDC, hFont);
244 SetTextAlign(hDC, align);
245 SetTextColor(hDC, color);
248 void ME_DrawGraphics(ME_Context *c, int x, int y, ME_Run *run,
249 ME_Paragraph *para, BOOL selected) {
251 int xs, ys, xe, ye, h, ym, width, eyes;
252 ME_GetGraphicsSize(c->editor, run, &sz);
261 /* draw a smiling face :) */
262 Ellipse(c->hDC, xs, ys, xe, ye);
263 Ellipse(c->hDC, xs+width/8, ym, x+width/8+eyes, ym+eyes);
264 Ellipse(c->hDC, xs+7*width/8-eyes, ym, xs+7*width/8, ym+eyes);
265 MoveToEx(c->hDC, xs+width/8, ys+3*h/4-eyes, NULL);
266 LineTo(c->hDC, xs+width/8, ys+3*h/4);
267 LineTo(c->hDC, xs+7*width/8, ys+3*h/4);
268 LineTo(c->hDC, xs+7*width/8, ys+3*h/4-eyes);
271 /* descent is usually (always?) 0 for graphics */
272 PatBlt(c->hDC, x, y-run->nAscent, sz.cx, run->nAscent+run->nDescent, DSTINVERT);
276 static void ME_DrawRun(ME_Context *c, int x, int y, ME_DisplayItem *rundi, ME_Paragraph *para) {
277 ME_Run *run = &rundi->member.run;
278 int runofs = run->nCharOfs+para->nCharOfs;
280 /* you can always comment it out if you need visible paragraph marks */
281 if (run->nFlags & (MERF_ENDPARA|MERF_TAB))
283 if (run->nFlags & MERF_GRAPHICS) {
285 ME_GetSelection(c->editor, &blfrom, &blto);
286 ME_DrawGraphics(c, x, y, run, para, (runofs >= blfrom) && (runofs < blto));
290 ME_DisplayItem *start = ME_FindItemBack(rundi, diStartRow);
291 ME_GetSelection(c->editor, &blfrom, &blto);
293 ME_DrawTextWithStyle(c, x, y,
294 run->strText->szData, ME_StrVLen(run->strText), run->style, NULL,
295 blfrom-runofs, blto-runofs, c->pt.y+start->member.row.nYPos, start->member.row.nHeight);
299 COLORREF ME_GetBackColor(ME_TextEditor *editor)
301 /* Looks like I was seriously confused
302 return GetSysColor((GetWindowLong(editor->hWnd, GWL_STYLE) & ES_READONLY) ? COLOR_3DFACE: COLOR_WINDOW);
304 if (editor->rgbBackColor == -1)
305 return GetSysColor(COLOR_WINDOW);
307 return editor->rgbBackColor;
310 void ME_DrawParagraph(ME_Context *c, ME_DisplayItem *paragraph) {
311 int align = SetTextAlign(c->hDC, TA_BASELINE);
314 ME_Paragraph *para = NULL;
317 int height = 0, baseline = 0, no=0, pno = 0;
322 c->pt.x = c->rcView.left;
323 rcPara.left = c->rcView.left;
324 rcPara.right = c->rcView.right;
325 for (p = paragraph; p!=paragraph->member.para.next_para; p = p->next) {
328 para = &p->member.para;
332 nMargWidth = (pno==0?para->nFirstMargin:para->nLeftMargin);
333 xs = c->rcView.left+nMargWidth;
334 xe = c->rcView.right-para->nRightMargin;
337 rcPara.bottom = y+p->member.row.nHeight;
338 visible = RectVisible(c->hDC, &rcPara);
341 hbr = CreateSolidBrush(ME_GetBackColor(c->editor));
343 rc.left = c->rcView.left;
344 rc.right = c->rcView.left+nMargWidth;
346 rc.bottom = y+p->member.row.nHeight;
347 FillRect(c->hDC, &rc, hbr/* c->hbrMargin */);
350 rc.right = c->rcView.right;
351 FillRect(c->hDC, &rc, hbr/* c->hbrMargin */);
352 rc.left = c->rcView.left+nMargWidth;
354 FillRect(c->hDC, &rc, hbr);
359 const WCHAR wszRowDebug[] = {'r','o','w','[','%','d',']',0};
362 wsprintfW(buf, wszRowDebug, no);
364 ME_DebugWrite(c->hDC, &pt, buf);
367 height = p->member.row.nHeight;
368 baseline = p->member.row.nBaseline;
373 run = &p->member.run;
374 if (visible && me_debug) {
375 rc.left = c->rcView.left+run->pt.x;
376 rc.right = c->rcView.left+run->pt.x+run->nWidth;
377 rc.top = c->pt.y+run->pt.y;
378 rc.bottom = c->pt.y+run->pt.y+height;
379 TRACE("rc = (%ld, %ld, %ld, %ld)\n", rc.left, rc.top, rc.right, rc.bottom);
380 if (run->nFlags & MERF_SKIPPED)
381 DrawFocusRect(c->hDC, &rc);
383 FrameRect(c->hDC, &rc, GetSysColorBrush(COLOR_GRAYTEXT));
386 ME_DrawRun(c, run->pt.x, c->pt.y+run->pt.y+baseline, p, ¶graph->member.para);
389 /* I'm using %ls, hope wsprintfW is not going to use wrong (4-byte) WCHAR version */
390 const WCHAR wszRunDebug[] = {'[','%','d',':','%','x',']',' ','%','l','s',0};
394 pt.y = c->pt.y + run->pt.y;
395 wsprintfW(buf, wszRunDebug, no, p->member.run.nFlags, p->member.run.strText->szData);
396 ME_DebugWrite(c->hDC, &pt, buf);
398 /* c->pt.x += p->member.run.nWidth; */
405 SetTextAlign(c->hDC, align);
408 void ME_Scroll(ME_TextEditor *editor, int cx, int cy)
411 HWND hWnd = editor->hWnd;
413 si.cbSize = sizeof(SCROLLINFO);
415 GetScrollInfo(hWnd, SB_VERT, &si);
416 si.nPos = editor->nScrollPosY -= cy;
417 SetScrollInfo(hWnd, SB_VERT, &si, TRUE);
418 if (abs(cy) > editor->sizeWindow.cy)
419 InvalidateRect(editor->hWnd, NULL, TRUE);
421 ScrollWindowEx(hWnd, cx, cy, NULL, NULL, NULL, NULL, SW_ERASE|SW_INVALIDATE);
424 void ME_UpdateScrollBar(ME_TextEditor *editor)
426 HWND hWnd = editor->hWnd;
428 int nOldLen = editor->nTotalLength;
429 BOOL bScrollY = (editor->nTotalLength > editor->sizeWindow.cy);
430 BOOL bUpdateScrollBars;
431 si.cbSize = sizeof(si);
432 si.fMask = SIF_POS | SIF_RANGE;
433 GetScrollInfo(hWnd, SB_VERT, &si);
434 bUpdateScrollBars = (bScrollY || editor->bScrollY)&& ((si.nMax != nOldLen) || (si.nPage != editor->sizeWindow.cy));
436 if (bScrollY != editor->bScrollY)
438 si.fMask = SIF_RANGE | SIF_PAGE;
440 si.nPage = editor->sizeWindow.cy;
442 si.nMax = editor->nTotalLength;
446 SetScrollInfo(hWnd, SB_VERT, &si, FALSE);
447 ME_MarkAllForWrapping(editor);
448 editor->bScrollY = bScrollY;
449 ME_WrapMarkedParagraphs(editor);
450 bUpdateScrollBars = TRUE;
452 if (bUpdateScrollBars) {
454 si.fMask = SIF_PAGE | SIF_RANGE | SIF_POS;
455 if (editor->nTotalLength > editor->sizeWindow.cy) {
456 si.nMax = editor->nTotalLength;
457 si.nPage = editor->sizeWindow.cy;
458 if (si.nPos > si.nMax-si.nPage) {
459 nScroll = (si.nMax-si.nPage)-si.nPos;
460 si.nPos = si.nMax-si.nPage;
468 TRACE("min=%d max=%d page=%d pos=%d shift=%d\n", si.nMin, si.nMax, si.nPage, si.nPos, nScroll);
469 editor->nScrollPosY = si.nPos;
470 SetScrollInfo(hWnd, SB_VERT, &si, TRUE);
472 ScrollWindow(hWnd, 0, -nScroll, NULL, NULL);
476 int ME_GetYScrollPos(ME_TextEditor *editor)
478 return editor->nScrollPosY;
481 void ME_EnsureVisible(ME_TextEditor *editor, ME_DisplayItem *pRun)
483 ME_DisplayItem *pRow = ME_FindItemBack(pRun, diStartRow);
484 ME_DisplayItem *pPara = ME_FindItemBack(pRun, diParagraph);
485 int y, yrel, yheight, yold;
486 HWND hWnd = editor->hWnd;
491 y = pPara->member.para.nYPos+pRow->member.row.nYPos;
492 yheight = pRow->member.row.nHeight;
493 yold = ME_GetYScrollPos(editor);
496 editor->nScrollPosY = y;
497 SetScrollPos(hWnd, SB_VERT, y, TRUE);
498 ScrollWindow(hWnd, 0, -yrel, NULL, NULL);
500 } else if (yrel + yheight > editor->sizeWindow.cy) {
501 int newy = y+yheight-editor->sizeWindow.cy;
502 editor->nScrollPosY = newy;
503 SetScrollPos(hWnd, SB_VERT, newy, TRUE);
504 ScrollWindow(hWnd, 0, -(newy-yold), NULL, NULL);
511 ME_SetZoom(ME_TextEditor *editor, int numerator, int denominator)
513 /* TODO: Zoom images and objects */
517 if (denominator == 0)
519 if (1.0 / 64.0 > (float)numerator / (float)denominator
520 || (float)numerator / (float)denominator > 64.0)
524 editor->nZoomNumerator = numerator;
525 editor->nZoomDenominator = denominator;
527 ME_RewrapRepaint(editor);