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riched20: Move several of the wrapping functions to use ME_Run directly. 

Signed-off-by: Huw Davies <huw@codeweavers.com>
Signed-off-by: Alexandre Julliard <julliard@winehq.org>
This commit is contained in:
Huw Davies 2020-10-08 11:10:45 +01:00 committed by Alexandre Julliard
parent 4039c5ad47
commit 7291506667
3 changed files with 234 additions and 239 deletions
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6
dlls/riched20/editor.h
View File

@ -76,6 +76,8 @@ ME_DisplayItem *ME_MakeDI(ME_DIType type) DECLSPEC_HIDDEN;
void ME_DestroyDisplayItem(ME_DisplayItem *item) DECLSPEC_HIDDEN;
void ME_DumpDocument(ME_TextBuffer *buffer) DECLSPEC_HIDDEN;
void destroy_para(ME_TextEditor *editor, ME_DisplayItem *item) DECLSPEC_HIDDEN;
ME_Run *run_prev( ME_Run *run ) DECLSPEC_HIDDEN;
ME_Run *run_next( ME_Run *run ) DECLSPEC_HIDDEN;
/* string.c */
ME_String *ME_MakeStringN(LPCWSTR szText, int nMaxChars) DECLSPEC_HIDDEN;
@ -145,6 +147,10 @@ void ME_GetCharFormat(ME_TextEditor *editor, const ME_Cursor *from,
void ME_GetSelectionCharFormat(ME_TextEditor *editor, CHARFORMAT2W *pFmt) DECLSPEC_HIDDEN;
void ME_GetDefaultCharFormat(ME_TextEditor *editor, CHARFORMAT2W *pFmt) DECLSPEC_HIDDEN;
void ME_SetDefaultCharFormat(ME_TextEditor *editor, CHARFORMAT2W *mod) DECLSPEC_HIDDEN;
static inline ME_DisplayItem *run_get_di( ME_Run *run )
{
return (ME_DisplayItem *)((ptrdiff_t)run - offsetof(ME_DisplayItem, member));
}
/* caret.c */
void ME_SetCursorToStart(ME_TextEditor *editor, ME_Cursor *cursor) DECLSPEC_HIDDEN;

20
dlls/riched20/run.c
View File

@ -27,6 +27,26 @@ WINE_DEFAULT_DEBUG_CHANNEL(richedit);
WINE_DECLARE_DEBUG_CHANNEL(richedit_check);
WINE_DECLARE_DEBUG_CHANNEL(richedit_lists);
ME_Run *run_next( ME_Run *run )
{
ME_DisplayItem *item = run_get_di( run );
if (ME_NextRun( NULL, &item, FALSE ))
return &item->member.run;
return NULL;
}
ME_Run *run_prev( ME_Run *run )
{
ME_DisplayItem *item = run_get_di( run );
if (ME_PrevRun( NULL, &item, FALSE ))
return &item->member.run;
return NULL;
}
/******************************************************************************
* ME_CanJoinRuns
*

447
dlls/riched20/wrap.c
View File

@ -44,9 +44,8 @@ typedef struct tagME_WrapContext
POINT pt;
BOOL bOverflown, bWordWrap;
ME_DisplayItem *pPara;
ME_DisplayItem *pRowStart;
ME_DisplayItem *pLastSplittableRun;
ME_Run *pRowStart;
ME_Run *pLastSplittableRun;
} ME_WrapContext;
static BOOL get_run_glyph_buffers( ME_Run *run )
@ -128,18 +127,16 @@ static void calc_run_extent(ME_Context *c, const ME_Paragraph *para, int startx,
* Splits a run into two in a given place. It also updates the screen position
* and size (extent) of the newly generated runs.
*/
static ME_DisplayItem *split_run_extents(ME_WrapContext *wc, ME_DisplayItem *item, int nVChar)
static ME_Run *split_run_extents( ME_WrapContext *wc, ME_Run *run, int nVChar )
{
ME_TextEditor *editor = wc->context->editor;
ME_Run *run, *run2;
ME_Run *run2;
ME_Paragraph *para = &wc->pPara->member.para;
ME_Cursor cursor = {wc->pPara, item, nVChar};
ME_Cursor cursor = {wc->pPara, run_get_di( run ), nVChar};
assert(item->member.run.nCharOfs != -1);
assert( run->nCharOfs != -1 );
ME_CheckCharOffsets(editor);
run = &item->member.run;
TRACE("Before split: %s(%d, %d)\n", debugstr_run( run ),
run->pt.x, run->pt.y);
@ -152,7 +149,7 @@ static ME_DisplayItem *split_run_extents(ME_WrapContext *wc, ME_DisplayItem *ite
shape_run( wc->context, run2 );
calc_run_extent(wc->context, para, wc->nRow ? wc->nLeftMargin : wc->nFirstMargin, run);
run2->pt.x = run->pt.x+run->nWidth;
run2->pt.x = run->pt.x + run->nWidth;
run2->pt.y = run->pt.y;
ME_CheckCharOffsets(editor);
@ -161,7 +158,7 @@ static ME_DisplayItem *split_run_extents(ME_WrapContext *wc, ME_DisplayItem *ite
debugstr_run( run ), run->pt.x, run->pt.y,
debugstr_run( run2 ), run2->pt.x, run2->pt.y);
return cursor.pRun;
return &cursor.pRun->member.run;
}
/******************************************************************************
@ -233,22 +230,20 @@ static void ME_BeginRow(ME_WrapContext *wc)
wc->pt.y++;
}
static void layout_row( ME_DisplayItem *start, const ME_DisplayItem *end )
static void layout_row( ME_Run *start, ME_Run *last )
{
ME_DisplayItem *p;
ME_Run *run;
int i, num_runs = 0;
int buf[16 * 5]; /* 5 arrays - 4 of int & 1 of BYTE, alloc space for 5 of ints */
int *vis_to_log = buf, *log_to_vis, *widths, *pos;
BYTE *levels;
BOOL found_black = FALSE;
for (p = end->prev; p != start->prev; p = p->prev)
for (run = last; run; run = run_prev( run ))
{
if (p->type == diRun)
{
if (!found_black) found_black = !(p->member.run.nFlags & (MERF_WHITESPACE | MERF_ENDPARA));
if (found_black) num_runs++;
}
if (!found_black) found_black = !(run->nFlags & (MERF_WHITESPACE | MERF_ENDPARA));
if (found_black) num_runs++;
if (run == start) break;
}
TRACE("%d runs\n", num_runs);
@ -262,131 +257,125 @@ static void layout_row( ME_DisplayItem *start, const ME_DisplayItem *end )
pos = vis_to_log + 3 * num_runs;
levels = (BYTE*)(vis_to_log + 4 * num_runs);
for (i = 0, p = start; i < num_runs; p = p->next)
for (i = 0, run = start; i < num_runs; run = run_next( run ))
{
if (p->type == diRun)
{
levels[i] = p->member.run.script_analysis.s.uBidiLevel;
widths[i] = p->member.run.nWidth;
TRACE( "%d: level %d width %d\n", i, levels[i], widths[i] );
i++;
}
levels[i] = run->script_analysis.s.uBidiLevel;
widths[i] = run->nWidth;
TRACE( "%d: level %d width %d\n", i, levels[i], widths[i] );
i++;
}
ScriptLayout( num_runs, levels, vis_to_log, log_to_vis );
pos[0] = start->member.run.para->pt.x;
pos[0] = run->para->pt.x;
for (i = 1; i < num_runs; i++)
pos[i] = pos[i - 1] + widths[ vis_to_log[ i - 1 ] ];
for (i = 0, p = start; i < num_runs; p = p->next)
for (i = 0, run = start; i < num_runs; run = run_next( run ))
{
if (p->type == diRun)
{
p->member.run.pt.x = pos[ log_to_vis[ i ] ];
TRACE( "%d: x = %d\n", i, p->member.run.pt.x );
i++;
}
run->pt.x = pos[ log_to_vis[ i ] ];
TRACE( "%d: x = %d\n", i, run->pt.x );
i++;
}
if (vis_to_log != buf) heap_free( vis_to_log );
}
static void ME_InsertRowStart(ME_WrapContext *wc, const ME_DisplayItem *pEnd)
static void ME_InsertRowStart( ME_WrapContext *wc, ME_Run *last )
{
ME_DisplayItem *p, *row;
ME_Paragraph *para = &wc->pPara->member.para;
BOOL bSkippingSpaces = TRUE;
int ascent = 0, descent = 0, width=0, shift = 0, align = 0;
ME_Run *run;
ME_DisplayItem *row;
ME_Paragraph *para = &wc->pPara->member.para;
BOOL bSkippingSpaces = TRUE;
int ascent = 0, descent = 0, width = 0, shift = 0, align = 0;
/* Include height of para numbering label */
if (wc->nRow == 0 && para->fmt.wNumbering)
{
ascent = para->para_num.style->tm.tmAscent;
descent = para->para_num.style->tm.tmDescent;
}
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. */
int len = p->member.run.len;
WCHAR *text = get_text( &p->member.run, len - 1 );
assert (len);
if (~p->member.run.nFlags & MERF_GRAPHICS)
while (len && *(text--) == ' ')
len--;
if (len)
{
if (len == p->member.run.len)
width += p->member.run.nWidth;
else
width += ME_PointFromCharContext( wc->context, &p->member.run, len, FALSE );
}
bSkippingSpaces = !len;
} else if (!(p->member.run.nFlags & MERF_ENDPARA))
width += p->member.run.nWidth;
}
}
para->nWidth = max(para->nWidth, width);
row = ME_MakeRow(ascent+descent, ascent, width);
if (wc->context->editor->bEmulateVersion10 && /* v1.0 - 3.0 */
(para->fmt.dwMask & PFM_TABLE) && (para->fmt.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->fmt.dwMask & PFM_ALIGNMENT);
align = para->fmt.wAlignment;
if (align == PFA_CENTER)
shift = max((wc->nAvailWidth-width)/2, 0);
if (align == PFA_RIGHT)
shift = max(wc->nAvailWidth-width, 0);
if (para->nFlags & MEPF_COMPLEX) layout_row( wc->pRowStart, pEnd );
row->member.row.pt.x = row->member.row.nLMargin + shift;
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;
/* Include height of para numbering label */
if (wc->nRow == 0 && para->fmt.wNumbering)
{
ascent = para->para_num.style->tm.tmAscent;
descent = para->para_num.style->tm.tmDescent;
}
}
if (wc->nRow == 0 && para->fmt.wNumbering)
{
para->para_num.pt.x = wc->nParaNumOffset + shift;
para->para_num.pt.y = wc->pt.y + row->member.row.nBaseline;
}
for (run = last; run; run = run_prev( run ))
{
/* ENDPARA run shouldn't affect row height, except if it's the only run in the paragraph */
if (run == wc->pRowStart || !(run->nFlags & MERF_ENDPARA))
{
if (run->nAscent>ascent) ascent = run->nAscent;
if (run->nDescent>descent) descent = run->nDescent;
if (bSkippingSpaces)
{
/* Exclude space characters from run width.
* Other whitespace or delimiters are not treated this way. */
int len = run->len;
WCHAR *text = get_text( run, len - 1 );
ME_InsertBefore(wc->pRowStart, row);
wc->nRow++;
wc->pt.y += row->member.row.nHeight;
ME_BeginRow(wc);
assert(len);
if (~run->nFlags & MERF_GRAPHICS)
while (len && *(text--) == ' ') len--;
if (len)
{
if (len == run->len)
width += run->nWidth;
else
width += ME_PointFromCharContext( wc->context, run, len, FALSE );
}
bSkippingSpaces = !len;
}
else if (!(run->nFlags & MERF_ENDPARA))
width += run->nWidth;
}
if (run == wc->pRowStart) break;
}
para->nWidth = max(para->nWidth, width);
row = ME_MakeRow( ascent + descent, ascent, width );
if (wc->context->editor->bEmulateVersion10 && /* v1.0 - 3.0 */
(para->fmt.dwMask & PFM_TABLE) && (para->fmt.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->fmt.dwMask & PFM_ALIGNMENT);
align = para->fmt.wAlignment;
if (align == PFA_CENTER) shift = max((wc->nAvailWidth-width)/2, 0);
if (align == PFA_RIGHT) shift = max(wc->nAvailWidth-width, 0);
if (para->nFlags & MEPF_COMPLEX) layout_row( wc->pRowStart, last );
row->member.row.pt.x = row->member.row.nLMargin + shift;
for (run = wc->pRowStart; run; run = run_next( run ))
{
run->pt.x += row->member.row.nLMargin+shift;
if (run == last) break;
}
if (wc->nRow == 0 && para->fmt.wNumbering)
{
para->para_num.pt.x = wc->nParaNumOffset + shift;
para->para_num.pt.y = wc->pt.y + row->member.row.nBaseline;
}
ME_InsertBefore( run_get_di( wc->pRowStart ), row );
wc->nRow++;
wc->pt.y += row->member.row.nHeight;
ME_BeginRow( wc );
}
static void ME_WrapEndParagraph(ME_WrapContext *wc, ME_DisplayItem *p)
static void ME_WrapEndParagraph( ME_WrapContext *wc )
{
ME_DisplayItem *para = wc->pPara;
PARAFORMAT2 *pFmt = &para->member.para.fmt;
if (wc->pRowStart)
ME_InsertRowStart(wc, p);
if (wc->pRowStart) ME_InsertRowStart( wc, para->member.para.eop_run );
if (wc->context->editor->bEmulateVersion10 && /* v1.0 - 3.0 */
pFmt->dwMask & PFM_TABLE && pFmt->wEffects & PFE_TABLE)
{
@ -394,30 +383,16 @@ static void ME_WrapEndParagraph(ME_WrapContext *wc, ME_DisplayItem *p)
* text down by one pixel for the border, so fix up the wrap context. */
wc->pt.y--;
}
/*
p = 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_run(run), run->pt.x, run->pt.y);
}
p = p->next;
}
*/
}
static void ME_WrapSizeRun(ME_WrapContext *wc, ME_DisplayItem *p)
static void ME_WrapSizeRun( ME_WrapContext *wc, ME_Run *run )
{
/* FIXME compose style (out of character and paragraph styles) here */
ME_UpdateRunFlags(wc->context->editor, &p->member.run);
ME_UpdateRunFlags( wc->context->editor, run );
calc_run_extent(wc->context, &wc->pPara->member.para,
wc->nRow ? wc->nLeftMargin : wc->nFirstMargin, &p->member.run);
calc_run_extent( wc->context, &wc->pPara->member.para,
wc->nRow ? wc->nLeftMargin : wc->nFirstMargin, run );
}
@ -453,173 +428,169 @@ static int reverse_find_whitespace(const WCHAR *s, int start)
return i;
}
static ME_DisplayItem *ME_MaximizeSplit(ME_WrapContext *wc, ME_DisplayItem *p, int i)
static ME_Run *ME_MaximizeSplit( ME_WrapContext *wc, ME_Run *run, int i )
{
ME_DisplayItem *pp, *piter = p;
ME_Run *new_run, *iter = run;
int j;
if (!i)
return NULL;
j = reverse_find_non_whitespace( get_text( &p->member.run, 0 ), i);
if (j>0) {
pp = split_run_extents(wc, piter, j);
wc->pt.x += piter->member.run.nWidth;
return pp;
j = reverse_find_non_whitespace( get_text( run, 0 ), i );
if (j > 0)
{
new_run = split_run_extents( wc, iter, j );
wc->pt.x += iter->nWidth;
return new_run;
}
else
{
pp = piter;
new_run = iter;
/* omit all spaces before split point */
while(piter != wc->pRowStart)
while (iter != wc->pRowStart)
{
piter = ME_FindItemBack(piter, diRun);
if (piter->member.run.nFlags & MERF_WHITESPACE)
iter = run_prev( iter );
if (iter->nFlags & MERF_WHITESPACE)
{
pp = piter;
new_run = iter;
continue;
}
if (piter->member.run.nFlags & MERF_ENDWHITE)
if (iter->nFlags & MERF_ENDWHITE)
{
i = reverse_find_non_whitespace( get_text( &piter->member.run, 0 ),
piter->member.run.len );
pp = split_run_extents(wc, piter, i);
wc->pt = pp->member.run.pt;
return pp;
i = reverse_find_non_whitespace( get_text( iter, 0 ), iter->len );
new_run = split_run_extents( wc, iter, i );
wc->pt = new_run->pt;
return new_run;
}
/* this run is the end of spaces, so the run edge is a good point to split */
wc->pt = pp->member.run.pt;
wc->pt = new_run->pt;
wc->bOverflown = TRUE;
TRACE("Split point is: %s|%s\n", debugstr_run( &piter->member.run ), debugstr_run( &pp->member.run ));
return pp;
TRACE( "Split point is: %s|%s\n", debugstr_run( iter ), debugstr_run( new_run ) );
return new_run;
}
wc->pt = piter->member.run.pt;
return piter;
wc->pt = iter->pt;
return iter;
}
}
static ME_DisplayItem *ME_SplitByBacktracking(ME_WrapContext *wc, ME_DisplayItem *p, int loc)
static ME_Run *ME_SplitByBacktracking( ME_WrapContext *wc, ME_Run *run, int loc )
{
ME_DisplayItem *new_run;
ME_Run *new_run;
int i, idesp, len;
ME_Run *run = &p->member.run;
idesp = i = find_split_point( wc->context, loc, run );
len = run->len;
assert(len>0);
assert(i<len);
if (i) {
assert( len > 0 );
assert( i < len );
if (i)
{
/* don't split words */
i = reverse_find_whitespace( get_text( run, 0 ), i );
new_run = ME_MaximizeSplit(wc, p, i);
new_run = ME_MaximizeSplit(wc, run, i);
if (new_run) return new_run;
}
TRACE("Must backtrack to split at: %s\n", debugstr_run( &p->member.run ));
TRACE("Must backtrack to split at: %s\n", debugstr_run( run ));
if (wc->pLastSplittableRun)
{
if (wc->pLastSplittableRun->member.run.nFlags & (MERF_GRAPHICS|MERF_TAB))
if (wc->pLastSplittableRun->nFlags & (MERF_GRAPHICS|MERF_TAB))
{
wc->pt = wc->pLastSplittableRun->member.run.pt;
wc->pt = wc->pLastSplittableRun->pt;
return wc->pLastSplittableRun;
}
else if (wc->pLastSplittableRun->member.run.nFlags & MERF_SPLITTABLE)
else if (wc->pLastSplittableRun->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));
assert((wc->pLastSplittableRun->nFlags & MERF_SPLITTABLE));
p = wc->pLastSplittableRun;
run = &p->member.run;
run = wc->pLastSplittableRun;
len = run->len;
/* don't split words */
i = reverse_find_whitespace( get_text( run, 0 ), len );
if (i == len)
i = reverse_find_non_whitespace( get_text( run, 0 ), len );
new_run = split_run_extents(wc, p, i);
wc->pt = new_run->member.run.pt;
new_run = split_run_extents(wc, run, i);
wc->pt = new_run->pt;
return new_run;
}
else
{
/* restart from the first run beginning with spaces */
wc->pt = wc->pLastSplittableRun->member.run.pt;
wc->pt = wc->pLastSplittableRun->pt;
return wc->pLastSplittableRun;
}
}
TRACE("Backtracking failed, trying desperate: %s\n", debugstr_run( &p->member.run ));
TRACE("Backtracking failed, trying desperate: %s\n", debugstr_run( run ));
/* OK, no better idea, so assume we MAY split words if we can split at all*/
if (idesp)
return split_run_extents(wc, p, idesp);
return split_run_extents(wc, run, idesp);
else
if (wc->pRowStart && p != wc->pRowStart)
if (wc->pRowStart && run != wc->pRowStart)
{
/* don't need to break current run, because it's possible to split
before this run */
wc->bOverflown = TRUE;
return p;
return run;
}
else
{
/* split point inside first character - no choice but split after that char */
if (len != 1) {
if (len != 1)
/* the run is more than 1 char, so we may split */
return split_run_extents(wc, p, 1);
}
return split_run_extents( wc, run, 1 );
/* the run is one char, can't split it */
return p;
return run;
}
}
static ME_DisplayItem *ME_WrapHandleRun(ME_WrapContext *wc, ME_DisplayItem *p)
static ME_Run *ME_WrapHandleRun( ME_WrapContext *wc, ME_Run *run )
{
ME_DisplayItem *pp;
ME_Run *run;
ME_Run *new_run;
int len;
assert(p->type == diRun);
if (!wc->pRowStart)
wc->pRowStart = p;
run = &p->member.run;
if (!wc->pRowStart) wc->pRowStart = run;
run->pt.x = wc->pt.x;
run->pt.y = wc->pt.y;
ME_WrapSizeRun(wc, p);
ME_WrapSizeRun( wc, run );
len = run->len;
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_ENDPARA) return run_next( run );
if (run->nFlags & MERF_WHITESPACE) {
if (run->nFlags & MERF_WHITESPACE)
{
wc->pt.x += run->nWidth;
/* skip runs consisting of only whitespaces */
return p->next;
return run_next( run );
}
if (run->nFlags & MERF_STARTWHITE) {
if (run->nFlags & MERF_STARTWHITE)
{
/* try to split the run at the first non-white char */
int black;
black = find_non_whitespace( get_text( run, 0 ), run->len, 0 );
if (black) {
if (black)
{
ME_Run *new_run;
wc->bOverflown = FALSE;
pp = split_run_extents(wc, p, black);
calc_run_extent(wc->context, &wc->pPara->member.para,
wc->nRow ? wc->nLeftMargin : wc->nFirstMargin,
&pp->member.run);
ME_InsertRowStart(wc, pp);
return pp;
new_run = split_run_extents( wc, run, black );
calc_run_extent( wc->context, &wc->pPara->member.para,
wc->nRow ? wc->nLeftMargin : wc->nFirstMargin, run );
ME_InsertRowStart( wc, run );
return new_run;
}
}
/* black run: the row goes from pRowStart to the previous run */
ME_InsertRowStart(wc, p);
return p;
ME_InsertRowStart( wc, run_prev( run ) );
return run;
}
/* 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;
ME_InsertRowStart( wc, run );
return run_next( run );
}
/* will current run fit? */
@ -631,35 +602,35 @@ static ME_DisplayItem *ME_WrapHandleRun(ME_WrapContext *wc, ME_DisplayItem *p)
if (run->nFlags & (MERF_WHITESPACE | MERF_ENDPARA)) {
/* let the overflow logic handle it */
wc->bOverflown = TRUE;
return p;
return run;
}
/* TAB: we can split before */
if (run->nFlags & MERF_TAB) {
wc->bOverflown = TRUE;
if (wc->pRowStart == p)
if (wc->pRowStart == run)
/* Don't split before the start of the run, or we will get an
* endless loop. */
return p->next;
return run_next( run );
else
return p;
return run;
}
/* 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;
return run;
}
/* 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 = reverse_find_non_whitespace( get_text( run, 0 ), len );
split_run_extents(wc, p, black);
split_run_extents( wc, run, black );
/* handle both parts again */
return p;
return run;
}
/* determine the split point by backtracking */
pp = ME_SplitByBacktracking(wc, p, loc);
if (pp == wc->pRowStart)
new_run = ME_SplitByBacktracking( wc, run, loc );
if (new_run == wc->pRowStart)
{
if (run->nFlags & MERF_STARTWHITE)
{
@ -671,32 +642,32 @@ static ME_DisplayItem *ME_WrapHandleRun(ME_WrapContext *wc, ME_DisplayItem *p)
/* The lines will only contain spaces, and the rest of the run will
* overflow onto the next line. */
wc->bOverflown = TRUE;
return p;
return run;
}
/* 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;
return run_next( run );
}
if (p != pp) /* found a suitable split point */
if (run != new_run) /* found a suitable split point */
{
wc->bOverflown = TRUE;
return pp;
return new_run;
}
/* we detected that it's best to split on start of this run */
if (wc->bOverflown)
return pp;
return new_run;
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)))
|| ((run->nFlags & (MERF_GRAPHICS|MERF_TAB)) && (run != wc->pRowStart)))
{
wc->pLastSplittableRun = p;
wc->pLastSplittableRun = run;
}
wc->pt.x += run->nWidth;
return p->next;
return run_next( run );
}
static int ME_GetParaLineSpace(ME_Context* c, ME_Paragraph* para)
@ -860,8 +831,9 @@ static HRESULT shape_para( ME_Context *c, ME_DisplayItem *p )
return hr;
}
static void ME_WrapTextParagraph(ME_TextEditor *editor, ME_Context *c, ME_DisplayItem *tp) {
ME_DisplayItem *p;
static void ME_WrapTextParagraph( ME_TextEditor *editor, ME_Context *c, ME_DisplayItem *tp )
{
ME_Run *run;
ME_WrapContext wc;
int border = 0;
int linespace = 0;
@ -940,16 +912,13 @@ static void ME_WrapTextParagraph(ME_TextEditor *editor, ME_Context *c, ME_Displa
linespace = ME_GetParaLineSpace(c, &tp->member.para);
ME_BeginRow(&wc);
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;
run = &ME_FindItemFwd( tp, diRun )->member.run;
while (run)
{
run = ME_WrapHandleRun( &wc, run );
if (wc.nRow && run == wc.pRowStart) wc.pt.y += linespace;
}
ME_WrapEndParagraph(&wc, p);
ME_WrapEndParagraph( &wc );
if (!(pFmt->dwMask & PFM_TABLE && pFmt->wEffects & PFE_TABLE) &&
(pFmt->dwMask & PFM_BORDER) && (pFmt->wBorders & 8))
wc.pt.y += border;