/******************************************************************************
* ME_UpdateRunFlags
*
* Determine some of run attributes given its content (style, text content).
* Some flags cannot be determined by this function (MERF_GRAPHICS,
* MERF_ENDPARA)
*/
void ME_UpdateRunFlags(ME_TextEditor *editor, ME_Run *run)
{
assert(run->nCharOfs >= 0);
if (RUN_IS_HIDDEN(run) || run->nFlags & MERF_TABLESTART)
run->nFlags |= MERF_HIDDEN;
else
run->nFlags &= ~MERF_HIDDEN;
if (run_is_splittable( run ))
run->nFlags |= MERF_SPLITTABLE;
else
run->nFlags &= ~MERF_SPLITTABLE;
if (!(run->nFlags & MERF_NOTEXT))
{
if (run_is_entirely_ws( run ))
run->nFlags |= MERF_WHITESPACE | MERF_STARTWHITE | MERF_ENDWHITE;
else
{
run->nFlags &= ~MERF_WHITESPACE;
if (ME_IsWSpace( *get_text( run, 0 ) ))
run->nFlags |= MERF_STARTWHITE;
else
run->nFlags &= ~MERF_STARTWHITE;
if (ME_IsWSpace( *get_text( run, run->len - 1 ) ))
run->nFlags |= MERF_ENDWHITE;
else
run->nFlags &= ~MERF_ENDWHITE;
}
}
else
run->nFlags &= ~(MERF_WHITESPACE | MERF_STARTWHITE | MERF_ENDWHITE);
}
static BOOL
ME_MoveCursorChars(ME_TextEditor *editor, ME_Cursor *pCursor, int nRelOfs)
{
ME_DisplayItem *pRun = pCursor->pRun;
if (nRelOfs == -1)
{
if (!pCursor->nOffset)
{
do {
pRun = ME_FindItemBack(pRun, diRunOrParagraph);
assert(pRun);
switch (pRun->type)
{
case diRun:
break;
case diParagraph:
if (pRun->member.para.prev_para->type == diTextStart)
return FALSE;
pRun = ME_FindItemBack(pRun, diRunOrParagraph);
/* every paragraph ought to have at least one run */
assert(pRun && pRun->type == diRun);
assert(pRun->member.run.nFlags & MERF_ENDPARA);
break;
default:
assert(pRun->type != diRun && pRun->type != diParagraph);
return FALSE;
}
} while (RUN_IS_HIDDEN(&pRun->member.run) ||
pRun->member.run.nFlags & MERF_HIDDEN);
pCursor->pRun = pRun;
if (pRun->member.run.nFlags & MERF_ENDPARA)
pCursor->nOffset = 0;
else
pCursor->nOffset = pRun->member.run.strText->nLen;
}
if (pCursor->nOffset)
pCursor->nOffset = ME_StrRelPos2(pCursor->pRun->member.run.strText, pCursor->nOffset, nRelOfs);
return TRUE;
}
else
{
if (!(pRun->member.run.nFlags & MERF_ENDPARA))
{
int new_ofs = ME_StrRelPos2(pRun->member.run.strText, pCursor->nOffset, nRelOfs);
if (new_ofs < pRun->member.run.strText->nLen)
{
pCursor->nOffset = new_ofs;
return TRUE;
}
}
do {
pRun = ME_FindItemFwd(pRun, diRun);
} while (pRun && (RUN_IS_HIDDEN(&pRun->member.run) ||
pRun->member.run.nFlags & MERF_HIDDEN));
if (pRun)
{
pCursor->pRun = pRun;
pCursor->nOffset = 0;
return TRUE;
}
}
return FALSE;
}
