2 * RichEdit - painting functions
4 * Copyright 2004 by Krzysztof Foltman
5 * Copyright 2005 by Phil Krylov
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.
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.
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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
24 WINE_DEFAULT_DEBUG_CHANNEL(richedit
);
26 void ME_PaintContent(ME_TextEditor
*editor
, HDC hDC
, BOOL bOnlyNew
, RECT
*rcUpdate
) {
32 yoffset
= ME_GetYScrollPos(editor
);
33 ME_InitContext(&c
, editor
, hDC
);
34 SetBkMode(hDC
, TRANSPARENT
);
36 item
= editor
->pBuffer
->pFirst
->next
;
38 while(item
!= editor
->pBuffer
->pLast
) {
40 assert(item
->type
== diParagraph
);
41 ye
= c
.pt
.y
+ item
->member
.para
.nHeight
;
42 if (!bOnlyNew
|| (item
->member
.para
.nFlags
& MEPF_REPAINT
))
44 BOOL bPaint
= (rcUpdate
== NULL
);
46 bPaint
= c
.pt
.y
<rcUpdate
->bottom
&&
47 c
.pt
.y
+item
->member
.para
.nHeight
>rcUpdate
->top
;
50 ME_DrawParagraph(&c
, item
);
51 if (!rcUpdate
|| (rcUpdate
->top
<=c
.pt
.y
&& rcUpdate
->bottom
>=ye
))
52 item
->member
.para
.nFlags
&= ~MEPF_REPAINT
;
56 item
= item
->member
.para
.next_para
;
58 if (c
.pt
.y
<c
.rcView
.bottom
) {
60 int xs
= c
.rcView
.left
, xe
= c
.rcView
.right
;
61 int ys
= c
.pt
.y
, ye
= c
.rcView
.bottom
;
65 int y1
= editor
->nTotalLength
-yoffset
, y2
= editor
->nLastTotalLength
-yoffset
;
72 if (rcUpdate
&& ys
!=ye
)
74 xs
= rcUpdate
->left
, xe
= rcUpdate
->right
;
75 if (rcUpdate
->top
> ys
)
77 if (rcUpdate
->bottom
< ye
)
78 ye
= rcUpdate
->bottom
;
86 FillRect(hDC
, &rc
, c
.editor
->hbrBackground
);
88 if (ys
== c
.pt
.y
) /* don't overwrite the top bar */
91 if (editor
->nTotalLength
!= editor
->nLastTotalLength
)
92 ME_SendRequestResize(editor
, FALSE
);
93 editor
->nLastTotalLength
= editor
->nTotalLength
;
94 ME_DestroyContext(&c
);
97 void ME_Repaint(ME_TextEditor
*editor
)
99 ME_Cursor
*pCursor
= &editor
->pCursors
[0];
101 if (ME_WrapMarkedParagraphs(editor
)) {
102 ME_UpdateScrollBar(editor
);
106 ME_EnsureVisible(editor
, pCursor
->pRun
);
107 UpdateWindow(editor
->hWnd
);
111 void ME_UpdateRepaint(ME_TextEditor
*editor
)
114 InvalidateRect(editor->hWnd, NULL, TRUE);
116 ME_SendOldNotify(editor
, EN_CHANGE
);
118 ME_SendOldNotify(editor
, EN_UPDATE
);
119 ME_SendSelChange(editor
);
124 ME_RewrapRepaint(ME_TextEditor
*editor
)
126 ME_MarkAllForWrapping(editor
);
127 ME_WrapMarkedParagraphs(editor
);
128 ME_UpdateScrollBar(editor
);
133 static void ME_DrawTextWithStyle(ME_Context
*c
, int x
, int y
, LPCWSTR szText
, int nChars
,
134 ME_Style
*s
, int *width
, int nSelFrom
, int nSelTo
, int ymin
, int cy
) {
137 COLORREF rgbOld
, rgbBack
;
138 int yOffset
= 0, yTwipsOffset
= 0;
139 hOldFont
= ME_SelectStyleFont(c
->editor
, hDC
, s
);
140 rgbBack
= ME_GetBackColor(c
->editor
);
141 if ((s
->fmt
.dwMask
& CFM_COLOR
) && (s
->fmt
.dwEffects
& CFE_AUTOCOLOR
))
142 rgbOld
= SetTextColor(hDC
, GetSysColor(COLOR_WINDOWTEXT
));
144 rgbOld
= SetTextColor(hDC
, s
->fmt
.crTextColor
);
145 if ((s
->fmt
.dwMask
& s
->fmt
.dwEffects
) & CFM_OFFSET
) {
146 yTwipsOffset
= s
->fmt
.yOffset
;
148 if ((s
->fmt
.dwMask
& s
->fmt
.dwEffects
) & (CFM_SUPERSCRIPT
| CFM_SUBSCRIPT
)) {
149 if (s
->fmt
.dwEffects
& CFE_SUPERSCRIPT
) yTwipsOffset
= s
->fmt
.yHeight
/3;
150 if (s
->fmt
.dwEffects
& CFE_SUBSCRIPT
) yTwipsOffset
= -s
->fmt
.yHeight
/12;
157 if (c
->editor
->nZoomNumerator
)
159 numerator
= c
->editor
->nZoomNumerator
;
160 denominator
= c
->editor
->nZoomDenominator
;
162 yOffset
= yTwipsOffset
* GetDeviceCaps(hDC
, LOGPIXELSY
) * numerator
/ denominator
/ 1440;
164 ExtTextOutW(hDC
, x
, y
-yOffset
, 0, NULL
, szText
, nChars
, NULL
);
167 GetTextExtentPoint32W(hDC
, szText
, nChars
, &sz
);
170 if (nSelFrom
< nChars
&& nSelTo
>= 0 && nSelFrom
<nSelTo
)
173 if (nSelFrom
< 0) nSelFrom
= 0;
174 if (nSelTo
> nChars
) nSelTo
= nChars
;
175 GetTextExtentPoint32W(hDC
, szText
, nSelFrom
, &sz
);
177 GetTextExtentPoint32W(hDC
, szText
+nSelFrom
, nSelTo
-nSelFrom
, &sz
);
179 /* Invert selection if not hidden by EM_HIDESELECTION */
180 if (c
->editor
->bHideSelection
== FALSE
)
181 PatBlt(hDC
, x
, ymin
, sz
.cx
, cy
, DSTINVERT
);
183 SetTextColor(hDC
, rgbOld
);
184 ME_UnselectStyleFont(c
->editor
, hDC
, s
, hOldFont
);
187 static void ME_DebugWrite(HDC hDC
, POINT
*pt
, WCHAR
*szText
) {
188 int align
= SetTextAlign(hDC
, TA_LEFT
|TA_TOP
);
189 HGDIOBJ hFont
= SelectObject(hDC
, GetStockObject(DEFAULT_GUI_FONT
));
190 COLORREF color
= SetTextColor(hDC
, RGB(128,128,128));
191 TextOutW(hDC
, pt
->x
, pt
->y
, szText
, lstrlenW(szText
));
192 SelectObject(hDC
, hFont
);
193 SetTextAlign(hDC
, align
);
194 SetTextColor(hDC
, color
);
197 void ME_DrawGraphics(ME_Context
*c
, int x
, int y
, ME_Run
*run
,
198 ME_Paragraph
*para
, BOOL selected
) {
200 int xs
, ys
, xe
, ye
, h
, ym
, width
, eyes
;
201 ME_GetGraphicsSize(c
->editor
, run
, &sz
);
210 /* draw a smiling face :) */
211 Ellipse(c
->hDC
, xs
, ys
, xe
, ye
);
212 Ellipse(c
->hDC
, xs
+width
/8, ym
, x
+width
/8+eyes
, ym
+eyes
);
213 Ellipse(c
->hDC
, xs
+7*width
/8-eyes
, ym
, xs
+7*width
/8, ym
+eyes
);
214 MoveToEx(c
->hDC
, xs
+width
/8, ys
+3*h
/4-eyes
, NULL
);
215 LineTo(c
->hDC
, xs
+width
/8, ys
+3*h
/4);
216 LineTo(c
->hDC
, xs
+7*width
/8, ys
+3*h
/4);
217 LineTo(c
->hDC
, xs
+7*width
/8, ys
+3*h
/4-eyes
);
220 /* descent is usually (always?) 0 for graphics */
221 PatBlt(c
->hDC
, x
, y
-run
->nAscent
, sz
.cx
, run
->nAscent
+run
->nDescent
, DSTINVERT
);
225 static void ME_DrawRun(ME_Context
*c
, int x
, int y
, ME_DisplayItem
*rundi
, ME_Paragraph
*para
) {
226 ME_Run
*run
= &rundi
->member
.run
;
227 ME_DisplayItem
*start
= ME_FindItemBack(rundi
, diStartRow
);
228 int runofs
= run
->nCharOfs
+para
->nCharOfs
;
229 int nSelFrom
, nSelTo
;
230 const WCHAR wszSpace
[] = {' ', 0};
232 if (run
->nFlags
& MERF_HIDDEN
)
235 ME_GetSelection(c
->editor
, &nSelFrom
, &nSelTo
);
237 /* Draw selected end-of-paragraph mark */
238 if (run
->nFlags
& MERF_ENDPARA
&& runofs
>= nSelFrom
&& runofs
< nSelTo
)
239 ME_DrawTextWithStyle(c
, x
, y
, wszSpace
, 1, run
->style
, NULL
, 0, 1,
240 c
->pt
.y
+ start
->member
.row
.nYPos
,
241 start
->member
.row
.nHeight
);
243 /* you can always comment it out if you need visible paragraph marks */
244 if (run
->nFlags
& (MERF_ENDPARA
| MERF_TAB
| MERF_CELL
))
247 if (run
->nFlags
& MERF_GRAPHICS
)
248 ME_DrawGraphics(c
, x
, y
, run
, para
, (runofs
>= nSelFrom
) && (runofs
< nSelTo
));
250 ME_DrawTextWithStyle(c
, x
, y
,
251 run
->strText
->szData
, ME_StrVLen(run
->strText
), run
->style
, NULL
,
252 nSelFrom
-runofs
,nSelTo
-runofs
, c
->pt
.y
+start
->member
.row
.nYPos
, start
->member
.row
.nHeight
);
255 COLORREF
ME_GetBackColor(ME_TextEditor
*editor
)
257 /* Looks like I was seriously confused
258 return GetSysColor((GetWindowLong(editor->hWnd, GWL_STYLE) & ES_READONLY) ? COLOR_3DFACE: COLOR_WINDOW);
260 if (editor
->rgbBackColor
== -1)
261 return GetSysColor(COLOR_WINDOW
);
263 return editor
->rgbBackColor
;
266 void ME_DrawParagraph(ME_Context
*c
, ME_DisplayItem
*paragraph
) {
267 int align
= SetTextAlign(c
->hDC
, TA_BASELINE
);
270 ME_Paragraph
*para
= NULL
;
273 int height
= 0, baseline
= 0, no
=0, pno
= 0;
278 c
->pt
.x
= c
->rcView
.left
;
279 rcPara
.left
= c
->rcView
.left
;
280 rcPara
.right
= c
->rcView
.right
;
281 for (p
= paragraph
; p
!=paragraph
->member
.para
.next_para
; p
= p
->next
) {
284 para
= &p
->member
.para
;
288 nMargWidth
= (pno
==0?para
->nFirstMargin
:para
->nLeftMargin
);
289 xs
= c
->rcView
.left
+nMargWidth
;
290 xe
= c
->rcView
.right
-para
->nRightMargin
;
293 rcPara
.bottom
= y
+p
->member
.row
.nHeight
;
294 visible
= RectVisible(c
->hDC
, &rcPara
);
297 hbr
= CreateSolidBrush(ME_GetBackColor(c
->editor
));
299 rc
.left
= c
->rcView
.left
;
300 rc
.right
= c
->rcView
.left
+nMargWidth
;
302 rc
.bottom
= y
+p
->member
.row
.nHeight
;
303 FillRect(c
->hDC
, &rc
, hbr
/* c->hbrMargin */);
306 rc
.right
= c
->rcView
.right
;
307 FillRect(c
->hDC
, &rc
, hbr
/* c->hbrMargin */);
308 rc
.left
= c
->rcView
.left
+nMargWidth
;
310 FillRect(c
->hDC
, &rc
, hbr
);
315 const WCHAR wszRowDebug
[] = {'r','o','w','[','%','d',']',0};
318 wsprintfW(buf
, wszRowDebug
, no
);
320 ME_DebugWrite(c
->hDC
, &pt
, buf
);
323 height
= p
->member
.row
.nHeight
;
324 baseline
= p
->member
.row
.nBaseline
;
329 run
= &p
->member
.run
;
330 if (visible
&& me_debug
) {
331 rc
.left
= c
->rcView
.left
+run
->pt
.x
;
332 rc
.right
= c
->rcView
.left
+run
->pt
.x
+run
->nWidth
;
333 rc
.top
= c
->pt
.y
+run
->pt
.y
;
334 rc
.bottom
= c
->pt
.y
+run
->pt
.y
+height
;
335 TRACE("rc = (%ld, %ld, %ld, %ld)\n", rc
.left
, rc
.top
, rc
.right
, rc
.bottom
);
336 if (run
->nFlags
& MERF_SKIPPED
)
337 DrawFocusRect(c
->hDC
, &rc
);
339 FrameRect(c
->hDC
, &rc
, GetSysColorBrush(COLOR_GRAYTEXT
));
342 ME_DrawRun(c
, run
->pt
.x
, c
->pt
.y
+run
->pt
.y
+baseline
, p
, ¶graph
->member
.para
);
345 /* I'm using %ls, hope wsprintfW is not going to use wrong (4-byte) WCHAR version */
346 const WCHAR wszRunDebug
[] = {'[','%','d',':','%','x',']',' ','%','l','s',0};
350 pt
.y
= c
->pt
.y
+ run
->pt
.y
;
351 wsprintfW(buf
, wszRunDebug
, no
, p
->member
.run
.nFlags
, p
->member
.run
.strText
->szData
);
352 ME_DebugWrite(c
->hDC
, &pt
, buf
);
354 /* c->pt.x += p->member.run.nWidth; */
361 SetTextAlign(c
->hDC
, align
);
364 void ME_Scroll(ME_TextEditor
*editor
, int cx
, int cy
)
367 HWND hWnd
= editor
->hWnd
;
369 si
.cbSize
= sizeof(SCROLLINFO
);
371 GetScrollInfo(hWnd
, SB_VERT
, &si
);
372 si
.nPos
= editor
->nScrollPosY
-= cy
;
373 SetScrollInfo(hWnd
, SB_VERT
, &si
, TRUE
);
376 if (abs(cy
) > editor
->sizeWindow
.cy
)
377 InvalidateRect(editor
->hWnd
, NULL
, TRUE
);
379 ScrollWindowEx(hWnd
, cx
, cy
, NULL
, NULL
, NULL
, NULL
, SW_ERASE
|SW_INVALIDATE
);
383 void ME_UpdateScrollBar(ME_TextEditor
*editor
)
385 HWND hWnd
= editor
->hWnd
;
387 int nOldLen
= editor
->nTotalLength
;
388 BOOL bScrollY
= (editor
->nTotalLength
> editor
->sizeWindow
.cy
);
389 BOOL bUpdateScrollBars
;
390 si
.cbSize
= sizeof(si
);
391 si
.fMask
= SIF_POS
| SIF_RANGE
;
392 GetScrollInfo(hWnd
, SB_VERT
, &si
);
393 bUpdateScrollBars
= (bScrollY
|| editor
->bScrollY
)&& ((si
.nMax
!= nOldLen
) || (si
.nPage
!= editor
->sizeWindow
.cy
));
395 if (bScrollY
!= editor
->bScrollY
)
397 si
.fMask
= SIF_RANGE
| SIF_PAGE
;
399 si
.nPage
= editor
->sizeWindow
.cy
;
401 si
.nMax
= editor
->nTotalLength
;
405 SetScrollInfo(hWnd
, SB_VERT
, &si
, FALSE
);
406 ME_MarkAllForWrapping(editor
);
407 editor
->bScrollY
= bScrollY
;
408 ME_WrapMarkedParagraphs(editor
);
409 bUpdateScrollBars
= TRUE
;
411 if (bUpdateScrollBars
) {
413 si
.fMask
= SIF_PAGE
| SIF_RANGE
| SIF_POS
;
414 if (editor
->nTotalLength
> editor
->sizeWindow
.cy
) {
415 si
.nMax
= editor
->nTotalLength
;
416 si
.nPage
= editor
->sizeWindow
.cy
;
417 if (si
.nPos
> si
.nMax
-si
.nPage
) {
418 nScroll
= (si
.nMax
-si
.nPage
)-si
.nPos
;
419 si
.nPos
= si
.nMax
-si
.nPage
;
427 TRACE("min=%d max=%d page=%d pos=%d shift=%d\n", si
.nMin
, si
.nMax
, si
.nPage
, si
.nPos
, nScroll
);
428 editor
->nScrollPosY
= si
.nPos
;
429 SetScrollInfo(hWnd
, SB_VERT
, &si
, TRUE
);
431 ScrollWindow(hWnd
, 0, -nScroll
, NULL
, NULL
);
435 int ME_GetYScrollPos(ME_TextEditor
*editor
)
437 return editor
->nScrollPosY
;
440 void ME_EnsureVisible(ME_TextEditor
*editor
, ME_DisplayItem
*pRun
)
442 ME_DisplayItem
*pRow
= ME_FindItemBack(pRun
, diStartRow
);
443 ME_DisplayItem
*pPara
= ME_FindItemBack(pRun
, diParagraph
);
444 int y
, yrel
, yheight
, yold
;
445 HWND hWnd
= editor
->hWnd
;
450 y
= pPara
->member
.para
.nYPos
+pRow
->member
.row
.nYPos
;
451 yheight
= pRow
->member
.row
.nHeight
;
452 yold
= ME_GetYScrollPos(editor
);
455 editor
->nScrollPosY
= y
;
456 SetScrollPos(hWnd
, SB_VERT
, y
, TRUE
);
459 ScrollWindow(hWnd
, 0, -yrel
, NULL
, NULL
);
462 } else if (yrel
+ yheight
> editor
->sizeWindow
.cy
) {
463 int newy
= y
+yheight
-editor
->sizeWindow
.cy
;
464 editor
->nScrollPosY
= newy
;
465 SetScrollPos(hWnd
, SB_VERT
, newy
, TRUE
);
468 ScrollWindow(hWnd
, 0, -(newy
-yold
), NULL
, NULL
);
476 ME_InvalidateFromOfs(ME_TextEditor
*editor
, int nCharOfs
)
482 ME_RunOfsFromCharOfs(editor
, nCharOfs
, &tmp
.pRun
, &tmp
.nOffset
);
483 ME_GetCursorCoordinates(editor
, &tmp
, &x
, &y
, &height
);
487 rc
.bottom
= y
+ height
;
488 rc
.right
= editor
->rcFormat
.right
;
489 InvalidateRect(editor
->hWnd
, &rc
, FALSE
);
494 ME_InvalidateSelection(ME_TextEditor
*editor
)
496 if (ME_IsSelection(editor
) || editor
->nLastSelStart
!= editor
->nLastSelEnd
)
500 int last_x
, last_y
, last_height
;
501 int last_x2
, last_y2
, last_height2
;
505 ME_GetCursorCoordinates(editor
, &editor
->pCursors
[1], &x
, &y
, &height
);
506 ME_GetCursorCoordinates(editor
, &editor
->pCursors
[0], &x2
, &y2
, &height2
);
507 ME_RunOfsFromCharOfs(editor
, editor
->nLastSelStart
, &tmp
.pRun
, &tmp
.nOffset
);
508 ME_GetCursorCoordinates(editor
, &tmp
, &last_x
, &last_y
, &last_height
);
509 ME_RunOfsFromCharOfs(editor
, editor
->nLastSelEnd
, &tmp
.pRun
, &tmp
.nOffset
);
510 ME_GetCursorCoordinates(editor
, &tmp
, &last_x2
, &last_y2
, &last_height2
);
514 rc
.top
= min(min(y
, last_y
), min(y2
, last_y2
));
515 rc
.right
= editor
->rcFormat
.right
;
516 rc
.bottom
= max(max(y
+ height
, last_y
+ last_height
),
517 max(y2
+ height2
, last_y2
+ last_height2
));
518 InvalidateRect(editor
->hWnd
, &rc
, FALSE
);
521 ME_GetSelection(editor
, &editor
->nLastSelStart
, &editor
->nLastSelEnd
);
526 ME_QueueInvalidateFromCursor(ME_TextEditor
*editor
, int nCursor
)
528 editor
->nInvalidOfs
= ME_GetCursorOfs(editor
, nCursor
);
533 ME_SetZoom(ME_TextEditor
*editor
, int numerator
, int denominator
)
535 /* TODO: Zoom images and objects */
539 if (denominator
== 0)
541 if (1.0 / 64.0 > (float)numerator
/ (float)denominator
542 || (float)numerator
/ (float)denominator
> 64.0)
546 editor
->nZoomNumerator
= numerator
;
547 editor
->nZoomDenominator
= denominator
;
549 ME_RewrapRepaint(editor
);