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., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
24 WINE_DEFAULT_DEBUG_CHANNEL(richedit
);
26 void ME_PaintContent(ME_TextEditor
*editor
, HDC hDC
, BOOL bOnlyNew
, const 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 if (ME_WrapMarkedParagraphs(editor
))
101 ME_UpdateScrollBar(editor
);
102 FIXME("ME_Repaint had to call ME_WrapMarkedParagraphs\n");
104 ME_SendOldNotify(editor
, EN_UPDATE
);
105 UpdateWindow(editor
->hWnd
);
108 void ME_UpdateRepaint(ME_TextEditor
*editor
)
110 /* Should be called whenever the contents of the control have changed */
113 if (ME_WrapMarkedParagraphs(editor
))
114 ME_UpdateScrollBar(editor
);
116 /* Ensure that the cursor is visible */
117 pCursor
= &editor
->pCursors
[0];
118 ME_EnsureVisible(editor
, pCursor
->pRun
);
120 /* send EN_CHANGE if the event mask asks for it */
121 if(editor
->nEventMask
& ENM_CHANGE
)
123 editor
->nEventMask
&= ~ENM_CHANGE
;
124 ME_SendOldNotify(editor
, EN_CHANGE
);
125 editor
->nEventMask
|= ENM_CHANGE
;
128 ME_SendSelChange(editor
);
132 ME_RewrapRepaint(ME_TextEditor
*editor
)
134 /* RewrapRepaint should be called whenever the control has changed in
135 * looks, but not content. Like resizing. */
137 ME_MarkAllForWrapping(editor
);
138 ME_WrapMarkedParagraphs(editor
);
139 ME_UpdateScrollBar(editor
);
145 static void ME_DrawTextWithStyle(ME_Context
*c
, int x
, int y
, LPCWSTR szText
, int nChars
,
146 ME_Style
*s
, int *width
, int nSelFrom
, int nSelTo
, int ymin
, int cy
) {
149 COLORREF rgbOld
, rgbBack
;
150 int yOffset
= 0, yTwipsOffset
= 0;
151 hOldFont
= ME_SelectStyleFont(c
->editor
, hDC
, s
);
152 rgbBack
= ME_GetBackColor(c
->editor
);
153 if ((s
->fmt
.dwMask
& CFM_LINK
) && (s
->fmt
.dwEffects
& CFE_LINK
))
154 rgbOld
= SetTextColor(hDC
, RGB(0,0,255));
155 else if ((s
->fmt
.dwMask
& CFM_COLOR
) && (s
->fmt
.dwEffects
& CFE_AUTOCOLOR
))
156 rgbOld
= SetTextColor(hDC
, GetSysColor(COLOR_WINDOWTEXT
));
158 rgbOld
= SetTextColor(hDC
, s
->fmt
.crTextColor
);
159 if ((s
->fmt
.dwMask
& s
->fmt
.dwEffects
) & CFM_OFFSET
) {
160 yTwipsOffset
= s
->fmt
.yOffset
;
162 if ((s
->fmt
.dwMask
& s
->fmt
.dwEffects
) & (CFM_SUPERSCRIPT
| CFM_SUBSCRIPT
)) {
163 if (s
->fmt
.dwEffects
& CFE_SUPERSCRIPT
) yTwipsOffset
= s
->fmt
.yHeight
/3;
164 if (s
->fmt
.dwEffects
& CFE_SUBSCRIPT
) yTwipsOffset
= -s
->fmt
.yHeight
/12;
171 if (c
->editor
->nZoomNumerator
)
173 numerator
= c
->editor
->nZoomNumerator
;
174 denominator
= c
->editor
->nZoomDenominator
;
176 yOffset
= yTwipsOffset
* GetDeviceCaps(hDC
, LOGPIXELSY
) * numerator
/ denominator
/ 1440;
178 ExtTextOutW(hDC
, x
, y
-yOffset
, 0, NULL
, szText
, nChars
, NULL
);
181 GetTextExtentPoint32W(hDC
, szText
, nChars
, &sz
);
184 if (nSelFrom
< nChars
&& nSelTo
>= 0 && nSelFrom
<nSelTo
)
187 if (nSelFrom
< 0) nSelFrom
= 0;
188 if (nSelTo
> nChars
) nSelTo
= nChars
;
189 GetTextExtentPoint32W(hDC
, szText
, nSelFrom
, &sz
);
191 GetTextExtentPoint32W(hDC
, szText
+nSelFrom
, nSelTo
-nSelFrom
, &sz
);
193 /* Invert selection if not hidden by EM_HIDESELECTION */
194 if (c
->editor
->bHideSelection
== FALSE
)
195 PatBlt(hDC
, x
, ymin
, sz
.cx
, cy
, DSTINVERT
);
197 SetTextColor(hDC
, rgbOld
);
198 ME_UnselectStyleFont(c
->editor
, hDC
, s
, hOldFont
);
201 static void ME_DebugWrite(HDC hDC
, const POINT
*pt
, LPCWSTR szText
) {
202 int align
= SetTextAlign(hDC
, TA_LEFT
|TA_TOP
);
203 HGDIOBJ hFont
= SelectObject(hDC
, GetStockObject(DEFAULT_GUI_FONT
));
204 COLORREF color
= SetTextColor(hDC
, RGB(128,128,128));
205 TextOutW(hDC
, pt
->x
, pt
->y
, szText
, lstrlenW(szText
));
206 SelectObject(hDC
, hFont
);
207 SetTextAlign(hDC
, align
);
208 SetTextColor(hDC
, color
);
211 static void ME_DrawGraphics(ME_Context
*c
, int x
, int y
, ME_Run
*run
,
212 ME_Paragraph
*para
, BOOL selected
) {
214 int xs
, ys
, xe
, ye
, h
, ym
, width
, eyes
;
215 ME_GetGraphicsSize(c
->editor
, run
, &sz
);
224 /* draw a smiling face :) */
225 Ellipse(c
->hDC
, xs
, ys
, xe
, ye
);
226 Ellipse(c
->hDC
, xs
+width
/8, ym
, x
+width
/8+eyes
, ym
+eyes
);
227 Ellipse(c
->hDC
, xs
+7*width
/8-eyes
, ym
, xs
+7*width
/8, ym
+eyes
);
228 MoveToEx(c
->hDC
, xs
+width
/8, ys
+3*h
/4-eyes
, NULL
);
229 LineTo(c
->hDC
, xs
+width
/8, ys
+3*h
/4);
230 LineTo(c
->hDC
, xs
+7*width
/8, ys
+3*h
/4);
231 LineTo(c
->hDC
, xs
+7*width
/8, ys
+3*h
/4-eyes
);
234 /* descent is usually (always?) 0 for graphics */
235 PatBlt(c
->hDC
, x
, y
-run
->nAscent
, sz
.cx
, run
->nAscent
+run
->nDescent
, DSTINVERT
);
239 static void ME_DrawRun(ME_Context
*c
, int x
, int y
, ME_DisplayItem
*rundi
, ME_Paragraph
*para
)
241 ME_Run
*run
= &rundi
->member
.run
;
242 ME_DisplayItem
*start
= ME_FindItemBack(rundi
, diStartRow
);
243 int runofs
= run
->nCharOfs
+para
->nCharOfs
;
244 int nSelFrom
, nSelTo
;
245 const WCHAR wszSpace
[] = {' ', 0};
247 if (run
->nFlags
& MERF_HIDDEN
)
250 ME_GetSelection(c
->editor
, &nSelFrom
, &nSelTo
);
252 /* Draw selected end-of-paragraph mark */
253 if (run
->nFlags
& MERF_ENDPARA
&& runofs
>= nSelFrom
&& runofs
< nSelTo
)
254 ME_DrawTextWithStyle(c
, x
, y
, wszSpace
, 1, run
->style
, NULL
, 0, 1,
255 c
->pt
.y
+ start
->member
.row
.nYPos
,
256 start
->member
.row
.nHeight
);
258 /* you can always comment it out if you need visible paragraph marks */
259 if (run
->nFlags
& (MERF_ENDPARA
| MERF_TAB
| MERF_CELL
))
262 if (run
->nFlags
& MERF_GRAPHICS
)
263 ME_DrawGraphics(c
, x
, y
, run
, para
, (runofs
>= nSelFrom
) && (runofs
< nSelTo
));
266 if (c
->editor
->cPasswordMask
)
268 ME_String
*szMasked
= ME_MakeStringR(c
->editor
->cPasswordMask
,ME_StrVLen(run
->strText
));
269 ME_DrawTextWithStyle(c
, x
, y
,
270 szMasked
->szData
, ME_StrVLen(szMasked
), run
->style
, NULL
,
271 nSelFrom
-runofs
,nSelTo
-runofs
, c
->pt
.y
+start
->member
.row
.nYPos
, start
->member
.row
.nHeight
);
272 ME_DestroyString(szMasked
);
275 ME_DrawTextWithStyle(c
, x
, y
,
276 run
->strText
->szData
, ME_StrVLen(run
->strText
), run
->style
, NULL
,
277 nSelFrom
-runofs
,nSelTo
-runofs
, c
->pt
.y
+start
->member
.row
.nYPos
, start
->member
.row
.nHeight
);
281 COLORREF
ME_GetBackColor(const ME_TextEditor
*editor
)
283 /* Looks like I was seriously confused
284 return GetSysColor((GetWindowLong(editor->hWnd, GWL_STYLE) & ES_READONLY) ? COLOR_3DFACE: COLOR_WINDOW);
286 if (editor
->rgbBackColor
== -1)
287 return GetSysColor(COLOR_WINDOW
);
289 return editor
->rgbBackColor
;
292 void ME_DrawParagraph(ME_Context
*c
, ME_DisplayItem
*paragraph
) {
293 int align
= SetTextAlign(c
->hDC
, TA_BASELINE
);
296 ME_Paragraph
*para
= NULL
;
299 int height
= 0, baseline
= 0, no
=0, pno
= 0;
304 c
->pt
.x
= c
->rcView
.left
;
305 rcPara
.left
= c
->rcView
.left
;
306 rcPara
.right
= c
->rcView
.right
;
307 for (p
= paragraph
; p
!=paragraph
->member
.para
.next_para
; p
= p
->next
) {
310 para
= &p
->member
.para
;
314 nMargWidth
= (pno
==0?para
->nFirstMargin
:para
->nLeftMargin
);
315 xs
= c
->rcView
.left
+nMargWidth
;
316 xe
= c
->rcView
.right
-para
->nRightMargin
;
319 rcPara
.bottom
= y
+p
->member
.row
.nHeight
;
320 visible
= RectVisible(c
->hDC
, &rcPara
);
323 hbr
= CreateSolidBrush(ME_GetBackColor(c
->editor
));
325 rc
.left
= c
->rcView
.left
;
326 rc
.right
= c
->rcView
.left
+nMargWidth
;
328 rc
.bottom
= y
+p
->member
.row
.nHeight
;
329 FillRect(c
->hDC
, &rc
, hbr
/* c->hbrMargin */);
332 rc
.right
= c
->rcView
.right
;
333 FillRect(c
->hDC
, &rc
, hbr
/* c->hbrMargin */);
334 rc
.left
= c
->rcView
.left
+nMargWidth
;
336 FillRect(c
->hDC
, &rc
, hbr
);
341 const WCHAR wszRowDebug
[] = {'r','o','w','[','%','d',']',0};
344 wsprintfW(buf
, wszRowDebug
, no
);
346 ME_DebugWrite(c
->hDC
, &pt
, buf
);
349 height
= p
->member
.row
.nHeight
;
350 baseline
= p
->member
.row
.nBaseline
;
355 run
= &p
->member
.run
;
356 if (visible
&& me_debug
) {
357 rc
.left
= c
->rcView
.left
+run
->pt
.x
;
358 rc
.right
= c
->rcView
.left
+run
->pt
.x
+run
->nWidth
;
359 rc
.top
= c
->pt
.y
+run
->pt
.y
;
360 rc
.bottom
= c
->pt
.y
+run
->pt
.y
+height
;
361 TRACE("rc = (%d, %d, %d, %d)\n", rc
.left
, rc
.top
, rc
.right
, rc
.bottom
);
362 if (run
->nFlags
& MERF_SKIPPED
)
363 DrawFocusRect(c
->hDC
, &rc
);
365 FrameRect(c
->hDC
, &rc
, GetSysColorBrush(COLOR_GRAYTEXT
));
368 ME_DrawRun(c
, run
->pt
.x
, c
->pt
.y
+run
->pt
.y
+baseline
, p
, ¶graph
->member
.para
);
371 /* I'm using %ls, hope wsprintfW is not going to use wrong (4-byte) WCHAR version */
372 const WCHAR wszRunDebug
[] = {'[','%','d',':','%','x',']',' ','%','l','s',0};
376 pt
.y
= c
->pt
.y
+ run
->pt
.y
;
377 wsprintfW(buf
, wszRunDebug
, no
, p
->member
.run
.nFlags
, p
->member
.run
.strText
->szData
);
378 ME_DebugWrite(c
->hDC
, &pt
, buf
);
380 /* c->pt.x += p->member.run.nWidth; */
387 SetTextAlign(c
->hDC
, align
);
390 void ME_ScrollAbs(ME_TextEditor
*editor
, int absY
)
392 ME_Scroll(editor
, absY
, 1);
395 void ME_ScrollUp(ME_TextEditor
*editor
, int cy
)
397 ME_Scroll(editor
, cy
, 2);
400 void ME_ScrollDown(ME_TextEditor
*editor
, int cy
)
402 ME_Scroll(editor
, cy
, 3);
405 void ME_Scroll(ME_TextEditor
*editor
, int value
, int type
)
408 int nOrigPos
, nNewPos
, nActualScroll
;
410 nOrigPos
= ME_GetYScrollPos(editor
);
412 si
.cbSize
= sizeof(SCROLLINFO
);
422 /* Scroll up - towards the beginning of the document */
423 si
.nPos
= nOrigPos
- value
;
426 /* Scroll down - towards the end of the document */
427 si
.nPos
= nOrigPos
+ value
;
430 FIXME("ME_Scroll called incorrectly\n");
434 nNewPos
= SetScrollInfo(editor
->hWnd
, SB_VERT
, &si
, editor
->bRedraw
);
435 nActualScroll
= nOrigPos
- nNewPos
;
438 if (abs(nActualScroll
) > editor
->sizeWindow
.cy
)
439 InvalidateRect(editor
->hWnd
, NULL
, TRUE
);
441 ScrollWindowEx(editor
->hWnd
, 0, nActualScroll
, NULL
, NULL
, NULL
, NULL
, SW_INVALIDATE
);
445 ME_UpdateScrollBar(editor
);
449 void ME_UpdateScrollBar(ME_TextEditor
*editor
)
451 /* Note that this is the only funciton that should ever call SetScrolLInfo
452 * with SIF_PAGE or SIF_RANGE. SetScrollPos and SetScrollRange should never
457 BOOL bScrollBarWasVisible
,bScrollBarWillBeVisible
;
459 if (ME_WrapMarkedParagraphs(editor
))
460 FIXME("ME_UpdateScrollBar had to call ME_WrapMarkedParagraphs\n");
463 si
.cbSize
= sizeof(si
);
464 bScrollBarWasVisible
= ME_GetYScrollVisible(editor
);
465 bScrollBarWillBeVisible
= editor
->nHeight
> editor
->sizeWindow
.cy
;
467 if (bScrollBarWasVisible
!= bScrollBarWillBeVisible
)
469 ShowScrollBar(hWnd
, SB_VERT
, bScrollBarWillBeVisible
);
470 ME_MarkAllForWrapping(editor
);
471 ME_WrapMarkedParagraphs(editor
);
474 si
.fMask
= SIF_PAGE
| SIF_RANGE
;
475 if (GetWindowLongW(hWnd
, GWL_STYLE
) & ES_DISABLENOSCROLL
)
476 si
.fMask
|= SIF_DISABLENOSCROLL
;
479 si
.nMax
= editor
->nTotalLength
;
481 si
.nPage
= editor
->sizeWindow
.cy
;
483 TRACE("min=%d max=%d page=%d\n", si
.nMin
, si
.nMax
, si
.nPage
);
484 SetScrollInfo(hWnd
, SB_VERT
, &si
, TRUE
);
487 int ME_GetYScrollPos(ME_TextEditor
*editor
)
490 si
.cbSize
= sizeof(si
);
492 GetScrollInfo(editor
->hWnd
, SB_VERT
, &si
);
496 BOOL
ME_GetYScrollVisible(ME_TextEditor
*editor
)
497 { /* Returns true if the scrollbar is visible */
499 sbi
.cbSize
= sizeof(sbi
);
500 GetScrollBarInfo(editor
->hWnd
, OBJID_VSCROLL
, &sbi
);
501 return ((sbi
.rgstate
[0] & STATE_SYSTEM_INVISIBLE
) == 0);
504 void ME_EnsureVisible(ME_TextEditor
*editor
, ME_DisplayItem
*pRun
)
506 ME_DisplayItem
*pRow
= ME_FindItemBack(pRun
, diStartRow
);
507 ME_DisplayItem
*pPara
= ME_FindItemBack(pRun
, diParagraph
);
508 int y
, yrel
, yheight
, yold
;
513 y
= pPara
->member
.para
.nYPos
+pRow
->member
.row
.nYPos
;
514 yheight
= pRow
->member
.row
.nHeight
;
515 yold
= ME_GetYScrollPos(editor
);
519 ME_ScrollAbs(editor
,y
);
520 else if (yrel
+ yheight
> editor
->sizeWindow
.cy
)
521 ME_ScrollAbs(editor
,y
+yheight
-editor
->sizeWindow
.cy
);
526 ME_InvalidateFromOfs(ME_TextEditor
*editor
, int nCharOfs
)
532 ME_RunOfsFromCharOfs(editor
, nCharOfs
, &tmp
.pRun
, &tmp
.nOffset
);
533 ME_GetCursorCoordinates(editor
, &tmp
, &x
, &y
, &height
);
537 rc
.bottom
= y
+ height
;
538 rc
.right
= editor
->rcFormat
.right
;
539 InvalidateRect(editor
->hWnd
, &rc
, FALSE
);
544 ME_InvalidateSelection(ME_TextEditor
*editor
)
546 ME_DisplayItem
*para1
, *para2
;
548 int len
= ME_GetTextLength(editor
);
550 ME_GetSelection(editor
, &nStart
, &nEnd
);
551 /* if both old and new selection are 0-char (= caret only), then
552 there's no (inverted) area to be repainted, neither old nor new */
553 if (nStart
== nEnd
&& editor
->nLastSelStart
== editor
->nLastSelEnd
)
555 ME_WrapMarkedParagraphs(editor
);
556 ME_GetSelectionParas(editor
, ¶1
, ¶2
);
557 assert(para1
->type
== diParagraph
);
558 assert(para2
->type
== diParagraph
);
559 /* last selection markers aren't always updated, which means
560 they can point past the end of the document */
561 if (editor
->nLastSelStart
> len
|| editor
->nLastSelEnd
> len
) {
562 ME_MarkForPainting(editor
,
563 ME_FindItemFwd(editor
->pBuffer
->pFirst
, diParagraph
),
564 ME_FindItemFwd(editor
->pBuffer
->pFirst
, diTextEnd
));
566 /* if the start part of selection is being expanded or contracted... */
567 if (nStart
< editor
->nLastSelStart
) {
568 ME_MarkForPainting(editor
, para1
, ME_FindItemFwd(editor
->pLastSelStartPara
, diParagraphOrEnd
));
570 if (nStart
> editor
->nLastSelStart
) {
571 ME_MarkForPainting(editor
, editor
->pLastSelStartPara
, ME_FindItemFwd(para1
, diParagraphOrEnd
));
574 /* if the end part of selection is being contracted or expanded... */
575 if (nEnd
< editor
->nLastSelEnd
) {
576 ME_MarkForPainting(editor
, para2
, ME_FindItemFwd(editor
->pLastSelEndPara
, diParagraphOrEnd
));
578 if (nEnd
> editor
->nLastSelEnd
) {
579 ME_MarkForPainting(editor
, editor
->pLastSelEndPara
, ME_FindItemFwd(para2
, diParagraphOrEnd
));
583 ME_InvalidateMarkedParagraphs(editor
);
584 /* remember the last invalidated position */
585 ME_GetSelection(editor
, &editor
->nLastSelStart
, &editor
->nLastSelEnd
);
586 ME_GetSelectionParas(editor
, &editor
->pLastSelStartPara
, &editor
->pLastSelEndPara
);
587 assert(editor
->pLastSelStartPara
->type
== diParagraph
);
588 assert(editor
->pLastSelEndPara
->type
== diParagraph
);
592 ME_QueueInvalidateFromCursor(ME_TextEditor
*editor
, int nCursor
)
594 editor
->nInvalidOfs
= ME_GetCursorOfs(editor
, nCursor
);
599 ME_SetZoom(ME_TextEditor
*editor
, int numerator
, int denominator
)
601 /* TODO: Zoom images and objects */
605 if (denominator
== 0)
607 if (1.0 / 64.0 > (float)numerator
/ (float)denominator
608 || (float)numerator
/ (float)denominator
> 64.0)
612 editor
->nZoomNumerator
= numerator
;
613 editor
->nZoomDenominator
= denominator
;
615 ME_RewrapRepaint(editor
);