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542 lines
16 KiB
C
542 lines
16 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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*
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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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 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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HBRUSH hbr;
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hbr = CreateSolidBrush(ME_GetBackColor(c.editor));
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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, hbr);
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DeleteObject(hbr);
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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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editor->nLastTotalLength = editor->nTotalLength;
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ME_DestroyContext(&c);
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}
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static void ME_MarkParagraphRange(ME_TextEditor *editor, ME_DisplayItem *p1,
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ME_DisplayItem *p2, int nFlags)
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{
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ME_DisplayItem *p3;
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if (p1 == p2)
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{
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p1->member.para.nFlags |= nFlags;
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return;
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}
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if (p1->member.para.nCharOfs > p2->member.para.nCharOfs)
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p3 = p1, p1 = p2, p2 = p3;
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p1->member.para.nFlags |= nFlags;
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do {
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p1 = p1->member.para.next_para;
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p1->member.para.nFlags |= nFlags;
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} while (p1 != p2);
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}
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static void ME_MarkOffsetRange(ME_TextEditor *editor, int from, int to, int nFlags)
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{
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ME_Cursor c1, c2;
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ME_CursorFromCharOfs(editor, from, &c1);
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ME_CursorFromCharOfs(editor, to, &c2);
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ME_MarkParagraphRange(editor, ME_GetParagraph(c1.pRun), ME_GetParagraph(c2.pRun), nFlags);
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}
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static void ME_MarkSelectionForRepaint(ME_TextEditor *editor)
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{
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int from, to, from2, to2, end;
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end = ME_GetTextLength(editor);
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ME_GetSelection(editor, &from, &to);
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from2 = editor->nLastSelStart;
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to2 = editor->nLastSelEnd;
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if (from<from2) ME_MarkOffsetRange(editor, from, from2, MEPF_REPAINT);
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if (from>from2) ME_MarkOffsetRange(editor, from2, from, MEPF_REPAINT);
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if (to<to2) ME_MarkOffsetRange(editor, to, to2, MEPF_REPAINT);
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if (to>to2) ME_MarkOffsetRange(editor, to2, to, MEPF_REPAINT);
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editor->nLastSelStart = from;
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editor->nLastSelEnd = to;
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}
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void ME_Repaint(ME_TextEditor *editor)
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{
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ME_Cursor *pCursor = &editor->pCursors[0];
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ME_DisplayItem *pRun = NULL;
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int nOffset = -1;
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HDC hDC;
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int nCharOfs = ME_CharOfsFromRunOfs(editor, pCursor->pRun, pCursor->nOffset);
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ME_RunOfsFromCharOfs(editor, nCharOfs, &pRun, &nOffset);
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assert(pRun == pCursor->pRun);
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assert(nOffset == pCursor->nOffset);
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ME_MarkSelectionForRepaint(editor);
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if (ME_WrapMarkedParagraphs(editor)) {
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ME_UpdateScrollBar(editor);
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}
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if (editor->bRedraw)
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{
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hDC = GetDC(editor->hWnd);
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ME_HideCaret(editor);
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ME_PaintContent(editor, hDC, TRUE, NULL);
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ReleaseDC(editor->hWnd, hDC);
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ME_ShowCaret(editor);
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ME_EnsureVisible(editor, pCursor->pRun);
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}
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}
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void ME_UpdateRepaint(ME_TextEditor *editor)
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{
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/*
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InvalidateRect(editor->hWnd, NULL, TRUE);
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*/
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ME_SendOldNotify(editor, EN_CHANGE);
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ME_Repaint(editor);
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ME_SendOldNotify(editor, EN_UPDATE);
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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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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_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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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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ME_Run *run = &rundi->member.run;
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int runofs = run->nCharOfs+para->nCharOfs;
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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))
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return;
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if (run->nFlags & MERF_GRAPHICS) {
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int blfrom, blto;
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ME_GetSelection(c->editor, &blfrom, &blto);
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ME_DrawGraphics(c, x, y, run, para, (runofs >= blfrom) && (runofs < blto));
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} else
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{
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int blfrom, blto;
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ME_DisplayItem *start = ME_FindItemBack(rundi, diStartRow);
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ME_GetSelection(c->editor, &blfrom, &blto);
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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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blfrom-runofs, blto-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 = (%ld, %ld, %ld, %ld)\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_Scroll(ME_TextEditor *editor, int cx, int cy)
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{
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SCROLLINFO si;
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HWND hWnd = editor->hWnd;
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si.cbSize = sizeof(SCROLLINFO);
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si.fMask = SIF_POS;
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GetScrollInfo(hWnd, SB_VERT, &si);
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si.nPos = editor->nScrollPosY -= cy;
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SetScrollInfo(hWnd, SB_VERT, &si, TRUE);
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if (editor->bRedraw)
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{
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if (abs(cy) > editor->sizeWindow.cy)
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InvalidateRect(editor->hWnd, NULL, TRUE);
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else
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ScrollWindowEx(hWnd, cx, cy, NULL, NULL, NULL, NULL, SW_ERASE|SW_INVALIDATE);
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}
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}
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void ME_UpdateScrollBar(ME_TextEditor *editor)
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{
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HWND hWnd = editor->hWnd;
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SCROLLINFO si;
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int nOldLen = editor->nTotalLength;
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BOOL bScrollY = (editor->nTotalLength > editor->sizeWindow.cy);
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BOOL bUpdateScrollBars;
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si.cbSize = sizeof(si);
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si.fMask = SIF_POS | SIF_RANGE;
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GetScrollInfo(hWnd, SB_VERT, &si);
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bUpdateScrollBars = (bScrollY || editor->bScrollY)&& ((si.nMax != nOldLen) || (si.nPage != editor->sizeWindow.cy));
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if (bScrollY != editor->bScrollY)
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{
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si.fMask = SIF_RANGE | SIF_PAGE;
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si.nMin = 0;
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si.nPage = editor->sizeWindow.cy;
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if (bScrollY) {
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si.nMax = editor->nTotalLength;
|
|
} else {
|
|
si.nMax = 0;
|
|
}
|
|
SetScrollInfo(hWnd, SB_VERT, &si, FALSE);
|
|
ME_MarkAllForWrapping(editor);
|
|
editor->bScrollY = bScrollY;
|
|
ME_WrapMarkedParagraphs(editor);
|
|
bUpdateScrollBars = TRUE;
|
|
}
|
|
if (bUpdateScrollBars) {
|
|
int nScroll = 0;
|
|
si.fMask = SIF_PAGE | SIF_RANGE | SIF_POS;
|
|
if (editor->nTotalLength > editor->sizeWindow.cy) {
|
|
si.nMax = editor->nTotalLength;
|
|
si.nPage = editor->sizeWindow.cy;
|
|
if (si.nPos > si.nMax-si.nPage) {
|
|
nScroll = (si.nMax-si.nPage)-si.nPos;
|
|
si.nPos = si.nMax-si.nPage;
|
|
}
|
|
}
|
|
else {
|
|
si.nMax = 0;
|
|
si.nPage = 0;
|
|
si.nPos = 0;
|
|
}
|
|
TRACE("min=%d max=%d page=%d pos=%d shift=%d\n", si.nMin, si.nMax, si.nPage, si.nPos, nScroll);
|
|
editor->nScrollPosY = si.nPos;
|
|
SetScrollInfo(hWnd, SB_VERT, &si, TRUE);
|
|
if (nScroll)
|
|
ScrollWindow(hWnd, 0, -nScroll, NULL, NULL);
|
|
}
|
|
}
|
|
|
|
int ME_GetYScrollPos(ME_TextEditor *editor)
|
|
{
|
|
return editor->nScrollPosY;
|
|
}
|
|
|
|
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;
|
|
HWND hWnd = editor->hWnd;
|
|
|
|
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 (yrel < 0) {
|
|
editor->nScrollPosY = y;
|
|
SetScrollPos(hWnd, SB_VERT, y, TRUE);
|
|
if (editor->bRedraw)
|
|
{
|
|
ScrollWindow(hWnd, 0, -yrel, NULL, NULL);
|
|
UpdateWindow(hWnd);
|
|
}
|
|
} else if (yrel + yheight > editor->sizeWindow.cy) {
|
|
int newy = y+yheight-editor->sizeWindow.cy;
|
|
editor->nScrollPosY = newy;
|
|
SetScrollPos(hWnd, SB_VERT, newy, TRUE);
|
|
if (editor->bRedraw)
|
|
{
|
|
ScrollWindow(hWnd, 0, -(newy-yold), NULL, NULL);
|
|
UpdateWindow(hWnd);
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
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;
|
|
}
|