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614 lines
18 KiB
C
614 lines
18 KiB
C
/*
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* RichEdit - painting functions
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*
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* Copyright 2004 by Krzysztof Foltman
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* Copyright 2005 by Phil Krylov
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
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*/
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#include "editor.h"
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WINE_DEFAULT_DEBUG_CHANNEL(richedit);
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void ME_PaintContent(ME_TextEditor *editor, HDC hDC, BOOL bOnlyNew, RECT *rcUpdate) {
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ME_DisplayItem *item;
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ME_Context c;
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int yoffset;
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editor->nSequence++;
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yoffset = ME_GetYScrollPos(editor);
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ME_InitContext(&c, editor, hDC);
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SetBkMode(hDC, TRANSPARENT);
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ME_MoveCaret(editor);
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item = editor->pBuffer->pFirst->next;
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c.pt.y -= yoffset;
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while(item != editor->pBuffer->pLast) {
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int ye;
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assert(item->type == diParagraph);
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ye = c.pt.y + item->member.para.nHeight;
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if (!bOnlyNew || (item->member.para.nFlags & MEPF_REPAINT))
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{
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BOOL bPaint = (rcUpdate == NULL);
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if (rcUpdate)
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bPaint = c.pt.y<rcUpdate->bottom &&
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c.pt.y+item->member.para.nHeight>rcUpdate->top;
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if (bPaint)
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{
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ME_DrawParagraph(&c, item);
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if (!rcUpdate || (rcUpdate->top<=c.pt.y && rcUpdate->bottom>=ye))
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item->member.para.nFlags &= ~MEPF_REPAINT;
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}
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}
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c.pt.y = ye;
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item = item->member.para.next_para;
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}
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if (c.pt.y<c.rcView.bottom) {
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RECT rc;
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int xs = c.rcView.left, xe = c.rcView.right;
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int ys = c.pt.y, ye = c.rcView.bottom;
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if (bOnlyNew)
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{
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int y1 = editor->nTotalLength-yoffset, y2 = editor->nLastTotalLength-yoffset;
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if (y1<y2)
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ys = y1, ye = y2+1;
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else
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ys = ye;
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}
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if (rcUpdate && ys!=ye)
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{
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xs = rcUpdate->left, xe = rcUpdate->right;
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if (rcUpdate->top > ys)
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ys = rcUpdate->top;
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if (rcUpdate->bottom < ye)
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ye = rcUpdate->bottom;
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}
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if (ye>ys) {
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rc.left = xs;
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rc.top = ys;
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rc.right = xe;
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rc.bottom = ye;
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FillRect(hDC, &rc, c.editor->hbrBackground);
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}
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if (ys == c.pt.y) /* don't overwrite the top bar */
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ys++;
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}
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if (editor->nTotalLength != editor->nLastTotalLength)
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ME_SendRequestResize(editor, FALSE);
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editor->nLastTotalLength = editor->nTotalLength;
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ME_DestroyContext(&c);
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}
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void ME_Repaint(ME_TextEditor *editor)
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{
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if (ME_WrapMarkedParagraphs(editor))
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{
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ME_UpdateScrollBar(editor);
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FIXME("ME_Repaint had to call ME_WrapMarkedParagraphs\n");
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}
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ME_SendOldNotify(editor, EN_UPDATE);
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UpdateWindow(editor->hWnd);
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}
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void ME_UpdateRepaint(ME_TextEditor *editor)
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{
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/* Should be called whenever the contents of the control have changed */
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ME_Cursor *pCursor;
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if (ME_WrapMarkedParagraphs(editor))
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ME_UpdateScrollBar(editor);
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/* Ensure that the cursor is visible */
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pCursor = &editor->pCursors[0];
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ME_EnsureVisible(editor, pCursor->pRun);
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/* send EN_CHANGE if the event mask asks for it */
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if(editor->nEventMask & ENM_CHANGE)
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{
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ME_SendOldNotify(editor, EN_CHANGE);
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}
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ME_Repaint(editor);
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ME_SendSelChange(editor);
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}
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void
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ME_RewrapRepaint(ME_TextEditor *editor)
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{
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/* RewrapRepaint should be called whenever the control has changed in
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* looks, but not content. Like resizing. */
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ME_MarkAllForWrapping(editor);
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ME_WrapMarkedParagraphs(editor);
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ME_UpdateScrollBar(editor);
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ME_Repaint(editor);
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}
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static void ME_DrawTextWithStyle(ME_Context *c, int x, int y, LPCWSTR szText, int nChars,
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ME_Style *s, int *width, int nSelFrom, int nSelTo, int ymin, int cy) {
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HDC hDC = c->hDC;
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HGDIOBJ hOldFont;
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COLORREF rgbOld, rgbBack;
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int yOffset = 0, yTwipsOffset = 0;
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hOldFont = ME_SelectStyleFont(c->editor, hDC, s);
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rgbBack = ME_GetBackColor(c->editor);
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if ((s->fmt.dwMask & CFM_LINK) && (s->fmt.dwEffects & CFE_LINK))
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rgbOld = SetTextColor(hDC, RGB(0,0,255));
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else if ((s->fmt.dwMask & CFM_COLOR) && (s->fmt.dwEffects & CFE_AUTOCOLOR))
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rgbOld = SetTextColor(hDC, GetSysColor(COLOR_WINDOWTEXT));
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else
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rgbOld = SetTextColor(hDC, s->fmt.crTextColor);
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if ((s->fmt.dwMask & s->fmt.dwEffects) & CFM_OFFSET) {
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yTwipsOffset = s->fmt.yOffset;
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}
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if ((s->fmt.dwMask & s->fmt.dwEffects) & (CFM_SUPERSCRIPT | CFM_SUBSCRIPT)) {
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if (s->fmt.dwEffects & CFE_SUPERSCRIPT) yTwipsOffset = s->fmt.yHeight/3;
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if (s->fmt.dwEffects & CFE_SUBSCRIPT) yTwipsOffset = -s->fmt.yHeight/12;
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}
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if (yTwipsOffset)
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{
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int numerator = 1;
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int denominator = 1;
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if (c->editor->nZoomNumerator)
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{
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numerator = c->editor->nZoomNumerator;
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denominator = c->editor->nZoomDenominator;
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}
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yOffset = yTwipsOffset * GetDeviceCaps(hDC, LOGPIXELSY) * numerator / denominator / 1440;
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}
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ExtTextOutW(hDC, x, y-yOffset, 0, NULL, szText, nChars, NULL);
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if (width) {
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SIZE sz;
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GetTextExtentPoint32W(hDC, szText, nChars, &sz);
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*width = sz.cx;
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}
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if (nSelFrom < nChars && nSelTo >= 0 && nSelFrom<nSelTo)
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{
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SIZE sz;
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if (nSelFrom < 0) nSelFrom = 0;
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if (nSelTo > nChars) nSelTo = nChars;
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GetTextExtentPoint32W(hDC, szText, nSelFrom, &sz);
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x += sz.cx;
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GetTextExtentPoint32W(hDC, szText+nSelFrom, nSelTo-nSelFrom, &sz);
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/* Invert selection if not hidden by EM_HIDESELECTION */
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if (c->editor->bHideSelection == FALSE)
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PatBlt(hDC, x, ymin, sz.cx, cy, DSTINVERT);
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}
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SetTextColor(hDC, rgbOld);
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ME_UnselectStyleFont(c->editor, hDC, s, hOldFont);
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}
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static void ME_DebugWrite(HDC hDC, POINT *pt, WCHAR *szText) {
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int align = SetTextAlign(hDC, TA_LEFT|TA_TOP);
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HGDIOBJ hFont = SelectObject(hDC, GetStockObject(DEFAULT_GUI_FONT));
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COLORREF color = SetTextColor(hDC, RGB(128,128,128));
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TextOutW(hDC, pt->x, pt->y, szText, lstrlenW(szText));
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SelectObject(hDC, hFont);
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SetTextAlign(hDC, align);
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SetTextColor(hDC, color);
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}
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void ME_DrawGraphics(ME_Context *c, int x, int y, ME_Run *run,
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ME_Paragraph *para, BOOL selected) {
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SIZE sz;
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int xs, ys, xe, ye, h, ym, width, eyes;
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ME_GetGraphicsSize(c->editor, run, &sz);
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xs = run->pt.x;
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ys = y-sz.cy;
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xe = xs+sz.cx;
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ye = y;
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h = ye-ys;
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ym = ys+h/4;
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width = sz.cx;
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eyes = width/8;
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/* draw a smiling face :) */
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Ellipse(c->hDC, xs, ys, xe, ye);
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Ellipse(c->hDC, xs+width/8, ym, x+width/8+eyes, ym+eyes);
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Ellipse(c->hDC, xs+7*width/8-eyes, ym, xs+7*width/8, ym+eyes);
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MoveToEx(c->hDC, xs+width/8, ys+3*h/4-eyes, NULL);
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LineTo(c->hDC, xs+width/8, ys+3*h/4);
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LineTo(c->hDC, xs+7*width/8, ys+3*h/4);
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LineTo(c->hDC, xs+7*width/8, ys+3*h/4-eyes);
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if (selected)
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{
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/* descent is usually (always?) 0 for graphics */
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PatBlt(c->hDC, x, y-run->nAscent, sz.cx, run->nAscent+run->nDescent, DSTINVERT);
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}
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}
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static void ME_DrawRun(ME_Context *c, int x, int y, ME_DisplayItem *rundi, ME_Paragraph *para)
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{
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ME_Run *run = &rundi->member.run;
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ME_DisplayItem *start = ME_FindItemBack(rundi, diStartRow);
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int runofs = run->nCharOfs+para->nCharOfs;
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int nSelFrom, nSelTo;
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const WCHAR wszSpace[] = {' ', 0};
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if (run->nFlags & MERF_HIDDEN)
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return;
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ME_GetSelection(c->editor, &nSelFrom, &nSelTo);
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/* Draw selected end-of-paragraph mark */
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if (run->nFlags & MERF_ENDPARA && runofs >= nSelFrom && runofs < nSelTo)
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ME_DrawTextWithStyle(c, x, y, wszSpace, 1, run->style, NULL, 0, 1,
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c->pt.y + start->member.row.nYPos,
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start->member.row.nHeight);
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/* you can always comment it out if you need visible paragraph marks */
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if (run->nFlags & (MERF_ENDPARA | MERF_TAB | MERF_CELL))
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return;
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if (run->nFlags & MERF_GRAPHICS)
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ME_DrawGraphics(c, x, y, run, para, (runofs >= nSelFrom) && (runofs < nSelTo));
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else
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{
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if (c->editor->cPasswordMask)
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{
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ME_String *szMasked = ME_MakeStringR(c->editor->cPasswordMask,ME_StrVLen(run->strText));
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ME_DrawTextWithStyle(c, x, y,
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szMasked->szData, ME_StrVLen(szMasked), run->style, NULL,
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nSelFrom-runofs,nSelTo-runofs, c->pt.y+start->member.row.nYPos, start->member.row.nHeight);
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ME_DestroyString(szMasked);
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}
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else
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ME_DrawTextWithStyle(c, x, y,
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run->strText->szData, ME_StrVLen(run->strText), run->style, NULL,
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nSelFrom-runofs,nSelTo-runofs, c->pt.y+start->member.row.nYPos, start->member.row.nHeight);
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}
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}
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COLORREF ME_GetBackColor(ME_TextEditor *editor)
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{
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/* Looks like I was seriously confused
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return GetSysColor((GetWindowLong(editor->hWnd, GWL_STYLE) & ES_READONLY) ? COLOR_3DFACE: COLOR_WINDOW);
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*/
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if (editor->rgbBackColor == -1)
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return GetSysColor(COLOR_WINDOW);
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else
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return editor->rgbBackColor;
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}
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void ME_DrawParagraph(ME_Context *c, ME_DisplayItem *paragraph) {
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int align = SetTextAlign(c->hDC, TA_BASELINE);
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ME_DisplayItem *p;
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ME_Run *run;
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ME_Paragraph *para = NULL;
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RECT rc, rcPara;
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int y = c->pt.y;
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int height = 0, baseline = 0, no=0, pno = 0;
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int xs, xe;
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int visible = 0;
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int nMargWidth = 0;
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c->pt.x = c->rcView.left;
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rcPara.left = c->rcView.left;
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rcPara.right = c->rcView.right;
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for (p = paragraph; p!=paragraph->member.para.next_para; p = p->next) {
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switch(p->type) {
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case diParagraph:
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para = &p->member.para;
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break;
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case diStartRow:
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assert(para);
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nMargWidth = (pno==0?para->nFirstMargin:para->nLeftMargin);
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xs = c->rcView.left+nMargWidth;
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xe = c->rcView.right-para->nRightMargin;
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y += height;
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rcPara.top = y;
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rcPara.bottom = y+p->member.row.nHeight;
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visible = RectVisible(c->hDC, &rcPara);
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if (visible) {
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HBRUSH hbr;
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hbr = CreateSolidBrush(ME_GetBackColor(c->editor));
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/* left margin */
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rc.left = c->rcView.left;
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rc.right = c->rcView.left+nMargWidth;
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rc.top = y;
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rc.bottom = y+p->member.row.nHeight;
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FillRect(c->hDC, &rc, hbr/* c->hbrMargin */);
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/* right margin */
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rc.left = xe;
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rc.right = c->rcView.right;
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FillRect(c->hDC, &rc, hbr/* c->hbrMargin */);
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rc.left = c->rcView.left+nMargWidth;
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rc.right = xe;
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FillRect(c->hDC, &rc, hbr);
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DeleteObject(hbr);
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}
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if (me_debug)
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{
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const WCHAR wszRowDebug[] = {'r','o','w','[','%','d',']',0};
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WCHAR buf[128];
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POINT pt = c->pt;
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wsprintfW(buf, wszRowDebug, no);
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pt.y = 12+y;
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ME_DebugWrite(c->hDC, &pt, buf);
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}
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height = p->member.row.nHeight;
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baseline = p->member.row.nBaseline;
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pno++;
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break;
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case diRun:
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assert(para);
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run = &p->member.run;
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if (visible && me_debug) {
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rc.left = c->rcView.left+run->pt.x;
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rc.right = c->rcView.left+run->pt.x+run->nWidth;
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rc.top = c->pt.y+run->pt.y;
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rc.bottom = c->pt.y+run->pt.y+height;
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TRACE("rc = (%d, %d, %d, %d)\n", rc.left, rc.top, rc.right, rc.bottom);
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if (run->nFlags & MERF_SKIPPED)
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DrawFocusRect(c->hDC, &rc);
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else
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FrameRect(c->hDC, &rc, GetSysColorBrush(COLOR_GRAYTEXT));
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}
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if (visible)
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ME_DrawRun(c, run->pt.x, c->pt.y+run->pt.y+baseline, p, ¶graph->member.para);
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if (me_debug)
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{
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/* I'm using %ls, hope wsprintfW is not going to use wrong (4-byte) WCHAR version */
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const WCHAR wszRunDebug[] = {'[','%','d',':','%','x',']',' ','%','l','s',0};
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WCHAR buf[2560];
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POINT pt;
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pt.x = run->pt.x;
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pt.y = c->pt.y + run->pt.y;
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wsprintfW(buf, wszRunDebug, no, p->member.run.nFlags, p->member.run.strText->szData);
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ME_DebugWrite(c->hDC, &pt, buf);
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}
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/* c->pt.x += p->member.run.nWidth; */
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break;
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default:
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break;
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}
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no++;
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}
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SetTextAlign(c->hDC, align);
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}
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void ME_ScrollAbs(ME_TextEditor *editor, int absY)
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{
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ME_Scroll(editor, absY, 1);
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}
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void ME_ScrollUp(ME_TextEditor *editor, int cy)
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{
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ME_Scroll(editor, cy, 2);
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}
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void ME_ScrollDown(ME_TextEditor *editor, int cy)
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{
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ME_Scroll(editor, cy, 3);
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}
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void ME_Scroll(ME_TextEditor *editor, int value, int type)
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{
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SCROLLINFO si;
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int nOrigPos, nNewPos, nActualScroll;
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nOrigPos = ME_GetYScrollPos(editor);
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si.cbSize = sizeof(SCROLLINFO);
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si.fMask = SIF_POS;
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switch (type)
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{
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case 1:
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/*Scroll absolutly*/
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si.nPos = value;
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break;
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case 2:
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/* Scroll up - towards the beginning of the document */
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si.nPos = nOrigPos - value;
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break;
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case 3:
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/* Scroll down - towards the end of the document */
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si.nPos = nOrigPos + value;
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break;
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default:
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FIXME("ME_Scroll called incorrectly\n");
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si.nPos = 0;
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}
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nNewPos = SetScrollInfo(editor->hWnd, SB_VERT, &si, editor->bRedraw);
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nActualScroll = nOrigPos - nNewPos;
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if (editor->bRedraw)
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{
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if (abs(nActualScroll) > editor->sizeWindow.cy)
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InvalidateRect(editor->hWnd, NULL, TRUE);
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else
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ScrollWindowEx(editor->hWnd, 0, nActualScroll, NULL, NULL, NULL, NULL, SW_INVALIDATE);
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ME_Repaint(editor);
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}
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ME_UpdateScrollBar(editor);
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}
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void ME_UpdateScrollBar(ME_TextEditor *editor)
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{
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/* Note that this is the only funciton that should ever call SetScrolLInfo
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* with SIF_PAGE or SIF_RANGE. SetScrollPos and SetScrollRange should never
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* be used at all. */
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HWND hWnd;
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SCROLLINFO si;
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BOOL bScrollBarWasVisible,bScrollBarWillBeVisible;
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if (ME_WrapMarkedParagraphs(editor))
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FIXME("ME_UpdateScrollBar had to call ME_WrapMarkedParagraphs\n");
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hWnd = editor->hWnd;
|
|
si.cbSize = sizeof(si);
|
|
bScrollBarWasVisible = ME_GetYScrollVisible(editor);
|
|
bScrollBarWillBeVisible = editor->nTotalLength > editor->sizeWindow.cy;
|
|
|
|
if (bScrollBarWasVisible != bScrollBarWillBeVisible)
|
|
{
|
|
ShowScrollBar(hWnd, SB_VERT, bScrollBarWillBeVisible);
|
|
ME_MarkAllForWrapping(editor);
|
|
ME_WrapMarkedParagraphs(editor);
|
|
}
|
|
|
|
si.fMask = SIF_PAGE | SIF_RANGE;
|
|
if (GetWindowLongW(hWnd, GWL_STYLE) & ES_DISABLENOSCROLL)
|
|
si.fMask |= SIF_DISABLENOSCROLL;
|
|
|
|
si.nMin = 0;
|
|
si.nMax = editor->nTotalLength;
|
|
|
|
si.nPage = editor->sizeWindow.cy;
|
|
|
|
TRACE("min=%d max=%d page=%d\n", si.nMin, si.nMax, si.nPage);
|
|
SetScrollInfo(hWnd, SB_VERT, &si, TRUE);
|
|
}
|
|
|
|
int ME_GetYScrollPos(ME_TextEditor *editor)
|
|
{
|
|
SCROLLINFO si;
|
|
si.cbSize = sizeof(si);
|
|
si.fMask = SIF_POS;
|
|
GetScrollInfo(editor->hWnd, SB_VERT, &si);
|
|
return si.nPos;
|
|
}
|
|
|
|
BOOL ME_GetYScrollVisible(ME_TextEditor *editor)
|
|
{ /* Returns true if the scrollbar is visible */
|
|
SCROLLBARINFO sbi;
|
|
sbi.cbSize = sizeof(sbi);
|
|
GetScrollBarInfo(editor->hWnd, OBJID_VSCROLL, &sbi);
|
|
return ((sbi.rgstate[0] & STATE_SYSTEM_INVISIBLE) == 0);
|
|
}
|
|
|
|
void ME_EnsureVisible(ME_TextEditor *editor, ME_DisplayItem *pRun)
|
|
{
|
|
ME_DisplayItem *pRow = ME_FindItemBack(pRun, diStartRow);
|
|
ME_DisplayItem *pPara = ME_FindItemBack(pRun, diParagraph);
|
|
int y, yrel, yheight, yold;
|
|
|
|
assert(pRow);
|
|
assert(pPara);
|
|
|
|
y = pPara->member.para.nYPos+pRow->member.row.nYPos;
|
|
yheight = pRow->member.row.nHeight;
|
|
yold = ME_GetYScrollPos(editor);
|
|
yrel = y - yold;
|
|
|
|
if (y < yold)
|
|
ME_ScrollAbs(editor,y);
|
|
else if (yrel + yheight > editor->sizeWindow.cy)
|
|
ME_ScrollAbs(editor,y+yheight-editor->sizeWindow.cy);
|
|
}
|
|
|
|
|
|
void
|
|
ME_InvalidateFromOfs(ME_TextEditor *editor, int nCharOfs)
|
|
{
|
|
RECT rc;
|
|
int x, y, height;
|
|
ME_Cursor tmp;
|
|
|
|
ME_RunOfsFromCharOfs(editor, nCharOfs, &tmp.pRun, &tmp.nOffset);
|
|
ME_GetCursorCoordinates(editor, &tmp, &x, &y, &height);
|
|
|
|
rc.left = 0;
|
|
rc.top = y;
|
|
rc.bottom = y + height;
|
|
rc.right = editor->rcFormat.right;
|
|
InvalidateRect(editor->hWnd, &rc, FALSE);
|
|
}
|
|
|
|
|
|
void
|
|
ME_InvalidateSelection(ME_TextEditor *editor)
|
|
{
|
|
ME_DisplayItem *para1, *para2;
|
|
int nStart, nEnd;
|
|
int len = ME_GetTextLength(editor);
|
|
|
|
ME_GetSelection(editor, &nStart, &nEnd);
|
|
/* if both old and new selection are 0-char (= caret only), then
|
|
there's no (inverted) area to be repainted, neither old nor new */
|
|
if (nStart == nEnd && editor->nLastSelStart == editor->nLastSelEnd)
|
|
return;
|
|
ME_WrapMarkedParagraphs(editor);
|
|
ME_GetSelectionParas(editor, ¶1, ¶2);
|
|
assert(para1->type == diParagraph);
|
|
assert(para2->type == diParagraph);
|
|
/* last selection markers aren't always updated, which means
|
|
they can point past the end of the document */
|
|
if (editor->nLastSelStart > len)
|
|
editor->nLastSelEnd = len;
|
|
if (editor->nLastSelEnd > len)
|
|
editor->nLastSelEnd = len;
|
|
|
|
/* if the start part of selection is being expanded or contracted... */
|
|
if (nStart < editor->nLastSelStart) {
|
|
ME_MarkForPainting(editor, para1, ME_FindItemFwd(editor->pLastSelStartPara, diParagraphOrEnd));
|
|
} else
|
|
if (nStart > editor->nLastSelStart) {
|
|
ME_MarkForPainting(editor, editor->pLastSelStartPara, ME_FindItemFwd(para1, diParagraphOrEnd));
|
|
}
|
|
|
|
/* if the end part of selection is being contracted or expanded... */
|
|
if (nEnd < editor->nLastSelEnd) {
|
|
ME_MarkForPainting(editor, para2, ME_FindItemFwd(editor->pLastSelEndPara, diParagraphOrEnd));
|
|
} else
|
|
if (nEnd > editor->nLastSelEnd) {
|
|
ME_MarkForPainting(editor, editor->pLastSelEndPara, ME_FindItemFwd(para2, diParagraphOrEnd));
|
|
}
|
|
|
|
ME_InvalidateMarkedParagraphs(editor);
|
|
/* remember the last invalidated position */
|
|
ME_GetSelection(editor, &editor->nLastSelStart, &editor->nLastSelEnd);
|
|
ME_GetSelectionParas(editor, &editor->pLastSelStartPara, &editor->pLastSelEndPara);
|
|
assert(editor->pLastSelStartPara->type == diParagraph);
|
|
assert(editor->pLastSelEndPara->type == diParagraph);
|
|
}
|
|
|
|
void
|
|
ME_QueueInvalidateFromCursor(ME_TextEditor *editor, int nCursor)
|
|
{
|
|
editor->nInvalidOfs = ME_GetCursorOfs(editor, nCursor);
|
|
}
|
|
|
|
|
|
BOOL
|
|
ME_SetZoom(ME_TextEditor *editor, int numerator, int denominator)
|
|
{
|
|
/* TODO: Zoom images and objects */
|
|
|
|
if (numerator != 0)
|
|
{
|
|
if (denominator == 0)
|
|
return FALSE;
|
|
if (1.0 / 64.0 > (float)numerator / (float)denominator
|
|
|| (float)numerator / (float)denominator > 64.0)
|
|
return FALSE;
|
|
}
|
|
|
|
editor->nZoomNumerator = numerator;
|
|
editor->nZoomDenominator = denominator;
|
|
|
|
ME_RewrapRepaint(editor);
|
|
return TRUE;
|
|
}
|