ReceiveTempSMS
/
Sweden-Number
1
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity
Sweden-Number/dlls/riched20/wrap.c

796 lines
25 KiB
C
Raw Blame History

/*
* RichEdit - Paragraph wrapping. Don't try to understand it. You've been
* warned !
*
* Copyright 2004 by Krzysztof Foltman
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
*/
#include "editor.h"
WINE_DEFAULT_DEBUG_CHANNEL(richedit);
/*
* Unsolved problems:
*
* - center and right align in WordPad omits all spaces at the start, we don't
* - objects/images are not handled yet
* - no tabs
*/
static ME_DisplayItem *ME_MakeRow(int height, int baseline, int width)
{
ME_DisplayItem *item = ME_MakeDI(diStartRow);
item->member.row.nHeight = height;
item->member.row.nBaseline = baseline;
item->member.row.nWidth = width;
return item;
}
static void ME_BeginRow(ME_WrapContext *wc, ME_DisplayItem *para)
{
PARAFORMAT2 *pFmt;
assert(para && para->type == diParagraph);
pFmt = para->member.para.pFmt;
wc->pRowStart = NULL;
wc->bOverflown = FALSE;
wc->pLastSplittableRun = NULL;
wc->bWordWrap = wc->context->editor->bWordWrap;
if (para->member.para.nFlags & (MEPF_ROWSTART|MEPF_ROWEND)) {
wc->nAvailWidth = 0;
wc->bWordWrap = FALSE;
if (para->member.para.nFlags & MEPF_ROWEND)
{
ME_Cell *cell = &ME_FindItemBack(para, diCell)->member.cell;
cell->nWidth = 0;
}
} else if (para->member.para.pCell) {
ME_Cell *cell = &para->member.para.pCell->member.cell;
int width;
width = cell->nRightBoundary;
if (cell->prev_cell)
width -= cell->prev_cell->member.cell.nRightBoundary;
if (!cell->prev_cell)
{
int rowIndent = ME_GetTableRowEnd(para)->member.para.pFmt->dxStartIndent;
width -= rowIndent;
}
cell->nWidth = max(ME_twips2pointsX(wc->context, width), 0);
wc->nAvailWidth = cell->nWidth
- (wc->nRow ? wc->nLeftMargin : wc->nFirstMargin) - wc->nRightMargin;
wc->bWordWrap = TRUE;
} else {
wc->nAvailWidth = wc->context->rcView.right - wc->context->rcView.left
- (wc->nRow ? wc->nLeftMargin : wc->nFirstMargin) - wc->nRightMargin;
}
wc->pt.x = wc->context->pt.x;
if (wc->context->editor->bEmulateVersion10 && /* v1.0 - 3.0 */
pFmt->dwMask & PFM_TABLE && pFmt->wEffects & PFE_TABLE)
/* Shift the text down because of the border. */
wc->pt.y++;
}
static void ME_InsertRowStart(ME_WrapContext *wc, const ME_DisplayItem *pEnd)
{
ME_DisplayItem *p, *row, *para;
BOOL bSkippingSpaces = TRUE;
int ascent = 0, descent = 0, width=0, shift = 0, align = 0;
PARAFORMAT2 *pFmt;
/* wrap text */
para = ME_GetParagraph(wc->pRowStart);
pFmt = para->member.para.pFmt;
for (p = pEnd->prev; p!=wc->pRowStart->prev; p = p->prev)
{
/* ENDPARA run shouldn't affect row height, except if it's the only run in the paragraph */
if (p->type==diRun && ((p==wc->pRowStart) || !(p->member.run.nFlags & MERF_ENDPARA))) { /* FIXME add more run types */
if (p->member.run.nAscent>ascent)
ascent = p->member.run.nAscent;
if (p->member.run.nDescent>descent)
descent = p->member.run.nDescent;
if (bSkippingSpaces)
{
/* Exclude space characters from run width.
* Other whitespace or delimiters are not treated this way. */
SIZE sz;
int len = p->member.run.strText->nLen;
WCHAR *text = p->member.run.strText->szData + len - 1;
assert (len);
while (len && *(text--) == ' ')
len--;
if (len)
{
if (len == p->member.run.strText->nLen)
{
width += p->member.run.nWidth;
} else {
sz = ME_GetRunSize(wc->context, &para->member.para,
&p->member.run, len, p->member.run.pt.x);
width += sz.cx;
}
}
bSkippingSpaces = !len;
} else if (!(p->member.run.nFlags & MERF_ENDPARA))
width += p->member.run.nWidth;
}
}
row = ME_MakeRow(ascent+descent, ascent, width);
if (wc->context->editor->bEmulateVersion10 && /* v1.0 - 3.0 */
pFmt->dwMask & PFM_TABLE && pFmt->wEffects & PFE_TABLE)
{
/* The text was shifted down in ME_BeginRow so move the wrap context
* back to where it should be. */
wc->pt.y--;
/* The height of the row is increased by the borders. */
row->member.row.nHeight += 2;
}
row->member.row.pt = wc->pt;
row->member.row.nLMargin = (!wc->nRow ? wc->nFirstMargin : wc->nLeftMargin);
row->member.row.nRMargin = wc->nRightMargin;
assert(para->member.para.pFmt->dwMask & PFM_ALIGNMENT);
align = para->member.para.pFmt->wAlignment;
if (align == PFA_CENTER)
shift = max((wc->nAvailWidth-width)/2, 0);
if (align == PFA_RIGHT)
shift = max(wc->nAvailWidth-width, 0);
for (p = wc->pRowStart; p!=pEnd; p = p->next)
{
if (p->type==diRun) { /* FIXME add more run types */
p->member.run.pt.x += row->member.row.nLMargin+shift;
}
}
ME_InsertBefore(wc->pRowStart, row);
wc->nRow++;
wc->pt.y += row->member.row.nHeight;
ME_BeginRow(wc, para);
}
static void ME_WrapEndParagraph(ME_WrapContext *wc, ME_DisplayItem *p)
{
ME_DisplayItem *para = p->member.para.prev_para;
PARAFORMAT2 *pFmt = para->member.para.pFmt;
if (wc->pRowStart)
ME_InsertRowStart(wc, p);
if (wc->context->editor->bEmulateVersion10 && /* v1.0 - 3.0 */
pFmt->dwMask & PFM_TABLE && pFmt->wEffects & PFE_TABLE)
{
/* ME_BeginRow was called an extra time for the paragraph, and it shifts the
* text down by one pixel for the border, so fix up the wrap context. */
wc->pt.y--;
}
/*
p = p->member.para.prev_para->next;
while(p) {
if (p->type == diParagraph || p->type == diTextEnd)
return;
if (p->type == diRun)
{
ME_Run *run = &p->member.run;
TRACE("%s - (%d, %d)\n", debugstr_w(run->strText->szData), run->pt.x, run->pt.y);
}
p = p->next;
}
*/
}
static void ME_WrapSizeRun(ME_WrapContext *wc, ME_DisplayItem *p)
{
/* FIXME compose style (out of character and paragraph styles) here */
ME_UpdateRunFlags(wc->context->editor, &p->member.run);
ME_CalcRunExtent(wc->context, &ME_GetParagraph(p)->member.para,
wc->nRow ? wc->nLeftMargin : wc->nFirstMargin, &p->member.run);
}
static ME_DisplayItem *ME_MaximizeSplit(ME_WrapContext *wc, ME_DisplayItem *p, int i)
{
ME_DisplayItem *pp, *piter = p;
int j;
if (!i)
return NULL;
j = ME_ReverseFindNonWhitespaceV(p->member.run.strText, i);
if (j>0) {
pp = ME_SplitRun(wc, piter, j);
wc->pt.x += piter->member.run.nWidth;
return pp;
}
else
{
pp = piter;
/* omit all spaces before split point */
while(piter != wc->pRowStart)
{
piter = ME_FindItemBack(piter, diRun);
if (piter->member.run.nFlags & MERF_WHITESPACE)
{
pp = piter;
continue;
}
if (piter->member.run.nFlags & MERF_ENDWHITE)
{
j = ME_ReverseFindNonWhitespaceV(piter->member.run.strText, i);
pp = ME_SplitRun(wc, piter, i);
wc->pt = pp->member.run.pt;
return pp;
}
/* this run is the end of spaces, so the run edge is a good point to split */
wc->pt = pp->member.run.pt;
wc->bOverflown = TRUE;
TRACE("Split point is: %s|%s\n", debugstr_w(piter->member.run.strText->szData), debugstr_w(pp->member.run.strText->szData));
return pp;
}
wc->pt = piter->member.run.pt;
return piter;
}
}
static ME_DisplayItem *ME_SplitByBacktracking(ME_WrapContext *wc, ME_DisplayItem *p, int loc)
{
ME_DisplayItem *piter = p, *pp;
int i, idesp, len;
ME_Run *run = &p->member.run;
idesp = i = ME_CharFromPoint(wc->context, loc, run);
len = ME_StrVLen(run->strText);
assert(len>0);
assert(i<len);
if (i) {
/* don't split words */
i = ME_ReverseFindWhitespaceV(run->strText, i);
pp = ME_MaximizeSplit(wc, p, i);
if (pp)
return pp;
}
TRACE("Must backtrack to split at: %s\n", debugstr_w(p->member.run.strText->szData));
if (wc->pLastSplittableRun)
{
if (wc->pLastSplittableRun->member.run.nFlags & (MERF_GRAPHICS|MERF_TAB))
{
wc->pt = wc->ptLastSplittableRun;
return wc->pLastSplittableRun;
}
else if (wc->pLastSplittableRun->member.run.nFlags & MERF_SPLITTABLE)
{
/* the following two lines are just to check if we forgot to call UpdateRunFlags earlier,
they serve no other purpose */
ME_UpdateRunFlags(wc->context->editor, run);
assert((wc->pLastSplittableRun->member.run.nFlags & MERF_SPLITTABLE));
piter = wc->pLastSplittableRun;
run = &piter->member.run;
len = ME_StrVLen(run->strText);
/* don't split words */
i = ME_ReverseFindWhitespaceV(run->strText, len);
if (i == len)
i = ME_ReverseFindNonWhitespaceV(run->strText, len);
if (i) {
ME_DisplayItem *piter2 = ME_SplitRun(wc, piter, i);
wc->pt = piter2->member.run.pt;
return piter2;
}
/* splittable = must have whitespaces */
assert(0 == "Splittable, but no whitespaces");
}
else
{
/* restart from the first run beginning with spaces */
wc->pt = wc->ptLastSplittableRun;
return wc->pLastSplittableRun;
}
}
TRACE("Backtracking failed, trying desperate: %s\n", debugstr_w(p->member.run.strText->szData));
/* OK, no better idea, so assume we MAY split words if we can split at all*/
if (idesp)
return ME_SplitRun(wc, piter, idesp);
else
if (wc->pRowStart && piter != wc->pRowStart)
{
/* don't need to break current run, because it's possible to split
before this run */
wc->bOverflown = TRUE;
return piter;
}
else
{
/* split point inside first character - no choice but split after that char */
int chars = 1;
int pos2 = ME_StrRelPos(run->strText, 0, &chars);
if (pos2 != len) {
/* the run is more than 1 char, so we may split */
return ME_SplitRun(wc, piter, pos2);
}
/* the run is one char, can't split it */
return piter;
}
}
static ME_DisplayItem *ME_WrapHandleRun(ME_WrapContext *wc, ME_DisplayItem *p)
{
ME_DisplayItem *pp;
ME_Run *run;
int len;
assert(p->type == diRun);
if (!wc->pRowStart)
wc->pRowStart = p;
run = &p->member.run;
run->pt.x = wc->pt.x;
run->pt.y = wc->pt.y;
ME_WrapSizeRun(wc, p);
len = ME_StrVLen(run->strText);
if (wc->bOverflown) /* just skipping final whitespaces */
{
/* End paragraph run can't overflow to the next line by itself. */
if (run->nFlags & MERF_ENDPARA)
return p->next;
if (run->nFlags & MERF_WHITESPACE) {
p->member.run.nFlags |= MERF_SKIPPED;
wc->pt.x += run->nWidth;
/* skip runs consisting of only whitespaces */
return p->next;
}
if (run->nFlags & MERF_STARTWHITE) {
/* try to split the run at the first non-white char */
int black;
black = ME_FindNonWhitespaceV(run->strText, 0);
if (black) {
wc->bOverflown = FALSE;
pp = ME_SplitRun(wc, p, black);
p->member.run.nFlags |= MERF_SKIPPED;
ME_InsertRowStart(wc, pp);
return pp;
}
}
/* black run: the row goes from pRowStart to the previous run */
ME_InsertRowStart(wc, p);
return p;
}
/* simply end the current row and move on to next one */
if (run->nFlags & MERF_ENDROW)
{
p = p->next;
ME_InsertRowStart(wc, p);
return p;
}
/* will current run fit? */
if (wc->bWordWrap &&
wc->pt.x + run->nWidth - wc->context->pt.x > wc->nAvailWidth)
{
int loc = wc->context->pt.x + wc->nAvailWidth - wc->pt.x;
/* total white run ? */
if (run->nFlags & MERF_WHITESPACE) {
/* let the overflow logic handle it */
wc->bOverflown = TRUE;
return p;
}
/* TAB: we can split before */
if (run->nFlags & MERF_TAB) {
wc->bOverflown = TRUE;
if (wc->pRowStart == p)
/* Don't split before the start of the run, or we will get an
* endless loop. */
return p->next;
else
return p;
}
/* graphics: we can split before, if run's width is smaller than row's width */
if ((run->nFlags & MERF_GRAPHICS) && run->nWidth <= wc->nAvailWidth) {
wc->bOverflown = TRUE;
return p;
}
/* can we separate out the last spaces ? (to use overflow logic later) */
if (run->nFlags & MERF_ENDWHITE)
{
/* we aren't sure if it's *really* necessary, it's a good start however */
int black = ME_ReverseFindNonWhitespaceV(run->strText, len);
ME_SplitRun(wc, p, black);
/* handle both parts again */
return p;
}
/* determine the split point by backtracking */
pp = ME_SplitByBacktracking(wc, p, loc);
if (pp == wc->pRowStart)
{
if (run->nFlags & MERF_STARTWHITE)
{
/* We had only spaces so far, so we must be on the first line of the
* paragraph (or the first line after MERF_ENDROW forced the line
* break within the paragraph), since no other lines of the paragraph
* start with spaces. */
/* The lines will only contain spaces, and the rest of the run will
* overflow onto the next line. */
wc->bOverflown = TRUE;
return p;
}
/* Couldn't split the first run, possible because we have a large font
* with a single character that caused an overflow.
*/
wc->pt.x += run->nWidth;
return p->next;
}
if (p != pp) /* found a suitable split point */
{
wc->bOverflown = TRUE;
return pp;
}
/* we detected that it's best to split on start of this run */
if (wc->bOverflown)
return pp;
ERR("failure!\n");
/* not found anything - writing over margins is the only option left */
}
if ((run->nFlags & (MERF_SPLITTABLE | MERF_STARTWHITE))
|| ((run->nFlags & (MERF_GRAPHICS|MERF_TAB)) && (p != wc->pRowStart)))
{
wc->pLastSplittableRun = p;
wc->ptLastSplittableRun = wc->pt;
}
wc->pt.x += run->nWidth;
return p->next;
}
static void ME_PrepareParagraphForWrapping(ME_Context *c, ME_DisplayItem *tp);
static void ME_WrapTextParagraph(ME_Context *c, ME_DisplayItem *tp) {
ME_DisplayItem *p;
ME_WrapContext wc;
int border = 0;
int linespace = 0;
PARAFORMAT2 *pFmt;
assert(tp->type == diParagraph);
if (!(tp->member.para.nFlags & MEPF_REWRAP)) {
return;
}
ME_PrepareParagraphForWrapping(c, tp);
pFmt = tp->member.para.pFmt;
wc.context = c;
/* wc.para_style = tp->member.para.style; */
wc.style = NULL;
if (tp->member.para.nFlags & MEPF_ROWEND) {
wc.nFirstMargin = wc.nLeftMargin = wc.nRightMargin = 0;
} else {
int dxStartIndent = pFmt->dxStartIndent;
if (tp->member.para.pCell) {
dxStartIndent += ME_GetTableRowEnd(tp)->member.para.pFmt->dxOffset;
}
wc.nFirstMargin = ME_twips2pointsX(c, dxStartIndent);
wc.nLeftMargin = wc.nFirstMargin + ME_twips2pointsX(c, pFmt->dxOffset);
wc.nRightMargin = ME_twips2pointsX(c, pFmt->dxRightIndent);
}
if (c->editor->bEmulateVersion10 && /* v1.0 - 3.0 */
pFmt->dwMask & PFM_TABLE && pFmt->wEffects & PFE_TABLE)
{
wc.nFirstMargin += ME_twips2pointsX(c, pFmt->dxOffset * 2);
}
wc.nRow = 0;
wc.pt.y = 0;
if (pFmt->dwMask & PFM_SPACEBEFORE)
wc.pt.y += ME_twips2pointsY(c, pFmt->dySpaceBefore);
if (!(pFmt->dwMask & PFM_TABLE && pFmt->wEffects & PFE_TABLE) &&
pFmt->dwMask & PFM_BORDER)
{
border = ME_GetParaBorderWidth(c->editor, tp->member.para.pFmt->wBorders);
if (pFmt->wBorders & 1) {
wc.nFirstMargin += border;
wc.nLeftMargin += border;
}
if (pFmt->wBorders & 2)
wc.nRightMargin -= border;
if (pFmt->wBorders & 4)
wc.pt.y += border;
}
linespace = ME_GetParaLineSpace(c, &tp->member.para);
ME_BeginRow(&wc, tp);
for (p = tp->next; p!=tp->member.para.next_para; ) {
assert(p->type != diStartRow);
if (p->type == diRun) {
p = ME_WrapHandleRun(&wc, p);
}
else p = p->next;
if (wc.nRow && p == wc.pRowStart)
wc.pt.y += linespace;
}
ME_WrapEndParagraph(&wc, p);
if (!(pFmt->dwMask & PFM_TABLE && pFmt->wEffects & PFE_TABLE) &&
(pFmt->dwMask & PFM_BORDER) && (pFmt->wBorders & 8))
wc.pt.y += border;
if (tp->member.para.pFmt->dwMask & PFM_SPACEAFTER)
wc.pt.y += ME_twips2pointsY(c, pFmt->dySpaceAfter);
tp->member.para.nFlags &= ~MEPF_REWRAP;
tp->member.para.nHeight = wc.pt.y;
tp->member.para.nRows = wc.nRow;
}
static void ME_PrepareParagraphForWrapping(ME_Context *c, ME_DisplayItem *tp) {
ME_DisplayItem *p, *pRow;
/* remove all items that will be reinserted by paragraph wrapper anyway */
tp->member.para.nRows = 0;
for (p = tp->next; p!=tp->member.para.next_para; p = p->next) {
switch(p->type) {
case diStartRow:
pRow = p;
p = p->prev;
ME_Remove(pRow);
ME_DestroyDisplayItem(pRow);
break;
default:
break;
}
}
/* join runs that can be joined, set up flags */
for (p = tp->next; p!=tp->member.para.next_para; p = p->next) {
int changed = 0;
switch(p->type) {
case diStartRow: assert(0); break; /* should have deleted it */
case diRun:
while (p->next->type == diRun) { /* FIXME */
if (ME_CanJoinRuns(&p->member.run, &p->next->member.run)) {
ME_JoinRuns(c->editor, p);
changed = 1;
}
else
break;
}
p->member.run.nFlags &= ~MERF_CALCBYWRAP;
break;
default:
break;
}
}
}
BOOL ME_WrapMarkedParagraphs(ME_TextEditor *editor)
{
ME_DisplayItem *item;
ME_Context c;
BOOL bModified = FALSE;
int yStart = -1;
int yLastPos = 0;
ME_InitContext(&c, editor, GetDC(editor->hWnd));
c.pt.x = 0;
editor->nHeight = 0;
item = editor->pBuffer->pFirst->next;
while(item != editor->pBuffer->pLast) {
BOOL bRedraw = FALSE;
assert(item->type == diParagraph);
editor->nHeight = max(editor->nHeight, item->member.para.pt.y);
if ((item->member.para.nFlags & MEPF_REWRAP)
|| (item->member.para.pt.y != c.pt.y))
bRedraw = TRUE;
item->member.para.pt = c.pt;
ME_WrapTextParagraph(&c, item);
if (bRedraw)
{
item->member.para.nFlags |= MEPF_REPAINT;
if (yStart == -1)
yStart = c.pt.y;
}
bModified = bModified | bRedraw;
yLastPos = max(yLastPos, c.pt.y);
if (item->member.para.nFlags & MEPF_ROWSTART)
{
ME_DisplayItem *cell = ME_FindItemFwd(item, diCell);
ME_DisplayItem *endRowPara;
int borderWidth = 0;
cell->member.cell.pt = c.pt;
/* Offset the text by the largest top border width. */
while (cell->member.cell.next_cell) {
borderWidth = max(borderWidth, cell->member.cell.border.top.width);
cell = cell->member.cell.next_cell;
}
endRowPara = ME_FindItemFwd(cell, diParagraph);
assert(endRowPara->member.para.nFlags & MEPF_ROWEND);
if (borderWidth > 0)
{
borderWidth = max(ME_twips2pointsY(&c, borderWidth), 1);
while (cell) {
cell->member.cell.yTextOffset = borderWidth;
cell = cell->member.cell.prev_cell;
}
c.pt.y += borderWidth;
}
if (endRowPara->member.para.pFmt->dxStartIndent > 0)
{
int dxStartIndent = endRowPara->member.para.pFmt->dxStartIndent;
cell = ME_FindItemFwd(item, diCell);
cell->member.cell.pt.x += ME_twips2pointsX(&c, dxStartIndent);
c.pt.x = cell->member.cell.pt.x;
}
}
else if (item->member.para.nFlags & MEPF_ROWEND)
{
/* Set all the cells to the height of the largest cell */
ME_DisplayItem *startRowPara;
int prevHeight, nHeight, bottomBorder = 0;
ME_DisplayItem *cell = ME_FindItemBack(item, diCell);
if (!(item->member.para.next_para->member.para.nFlags & MEPF_ROWSTART))
{
/* Last row, the bottom border is added to the height. */
cell = cell->member.cell.prev_cell;
while (cell)
{
bottomBorder = max(bottomBorder, cell->member.cell.border.bottom.width);
cell = cell->member.cell.prev_cell;
}
bottomBorder = ME_twips2pointsY(&c, bottomBorder);
cell = ME_FindItemBack(item, diCell);
}
prevHeight = cell->member.cell.nHeight;
nHeight = cell->member.cell.prev_cell->member.cell.nHeight + bottomBorder;
cell->member.cell.nHeight = nHeight;
item->member.para.nHeight = nHeight;
cell = cell->member.cell.prev_cell;
cell->member.cell.nHeight = nHeight;
while (cell->member.cell.prev_cell)
{
cell = cell->member.cell.prev_cell;
cell->member.cell.nHeight = nHeight;
}
/* Also set the height of the start row paragraph */
startRowPara = ME_FindItemBack(cell, diParagraph);
startRowPara->member.para.nHeight = nHeight;
c.pt.x = startRowPara->member.para.pt.x;
c.pt.y = cell->member.cell.pt.y + nHeight;
if (prevHeight < nHeight)
{
/* The height of the cells has grown, so invalidate the bottom of
* the cells. */
item->member.para.nFlags |= MEPF_REPAINT;
cell = ME_FindItemBack(item, diCell);
while (cell) {
ME_FindItemBack(cell, diParagraph)->member.para.nFlags |= MEPF_REPAINT;
cell = cell->member.cell.prev_cell;
}
}
}
else if (item->member.para.pCell &&
item->member.para.pCell != item->member.para.next_para->member.para.pCell)
{
/* The next paragraph is in the next cell in the table row. */
ME_Cell *cell = &item->member.para.pCell->member.cell;
cell->nHeight = c.pt.y + item->member.para.nHeight - cell->pt.y;
/* Propagate the largest height to the end so that it can be easily
* sent back to all the cells at the end of the row. */
if (cell->prev_cell)
cell->nHeight = max(cell->nHeight, cell->prev_cell->member.cell.nHeight);
c.pt.x = cell->pt.x + cell->nWidth;
c.pt.y = cell->pt.y;
cell->next_cell->member.cell.pt = c.pt;
c.pt.y += cell->yTextOffset;
}
else
{
if (item->member.para.pCell) {
/* Next paragraph in the same cell. */
c.pt.x = item->member.para.pCell->member.cell.pt.x;
} else {
/* Normal paragraph */
c.pt.x = 0;
}
c.pt.y += item->member.para.nHeight;
}
item = item->member.para.next_para;
}
editor->sizeWindow.cx = c.rcView.right-c.rcView.left;
editor->sizeWindow.cy = c.rcView.bottom-c.rcView.top;
editor->nTotalLength = c.pt.y;
editor->pBuffer->pLast->member.para.pt.x = 0;
editor->pBuffer->pLast->member.para.pt.y = yLastPos;
ME_DestroyContext(&c, editor->hWnd);
/* Each paragraph may contain multiple rows, which should be scrollable, even
if the containing paragraph has pt.y == 0 */
item = editor->pBuffer->pFirst;
while ((item = ME_FindItemFwd(item, diStartRow)) != NULL) {
assert(item->type == diStartRow);
editor->nHeight = max(editor->nHeight, item->member.row.pt.y);
}
if (bModified || editor->nTotalLength < editor->nLastTotalLength)
ME_InvalidateMarkedParagraphs(editor);
return bModified;
}
void ME_InvalidateMarkedParagraphs(ME_TextEditor *editor)
{
ME_Context c;
RECT rc;
int ofs;
ME_DisplayItem *item;
ME_InitContext(&c, editor, GetDC(editor->hWnd));
rc = c.rcView;
ofs = ME_GetYScrollPos(editor);
item = editor->pBuffer->pFirst;
while(item != editor->pBuffer->pLast) {
if (item->member.para.nFlags & MEPF_REPAINT) {
rc.top = c.rcView.top + item->member.para.pt.y - ofs;
rc.bottom = max(c.rcView.top + item->member.para.pt.y
+ item->member.para.nHeight - ofs,
c.rcView.bottom);
InvalidateRect(editor->hWnd, &rc, TRUE);
}
item = item->member.para.next_para;
}
if (editor->nTotalLength < editor->nLastTotalLength)
{
rc.top = c.rcView.top + editor->nTotalLength - ofs;
rc.bottom = c.rcView.top + editor->nLastTotalLength - ofs;
InvalidateRect(editor->hWnd, &rc, TRUE);
}
ME_DestroyContext(&c, editor->hWnd);
}
void
ME_SendRequestResize(ME_TextEditor *editor, BOOL force)
{
if (editor->nEventMask & ENM_REQUESTRESIZE)
{
RECT rc;
GetClientRect(editor->hWnd, &rc);
if (force || rc.bottom != editor->nTotalLength)
{
REQRESIZE info;
info.nmhdr.hwndFrom = editor->hWnd;
info.nmhdr.idFrom = GetWindowLongW(editor->hWnd, GWLP_ID);
info.nmhdr.code = EN_REQUESTRESIZE;
info.rc = rc;
info.rc.bottom = editor->nTotalLength;
editor->nEventMask &= ~ENM_REQUESTRESIZE;
SendMessageW(GetParent(editor->hWnd), WM_NOTIFY,
info.nmhdr.idFrom, (LPARAM)&info);
editor->nEventMask |= ENM_REQUESTRESIZE;
}
}
}
Reference in New Issue View Git Blame Copy Permalink