void ME_SendSelChange(ME_TextEditor *editor)
{
SELCHANGE sc;
if (!(editor->nEventMask & ENM_SELCHANGE))
return;
sc.nmhdr.hwndFrom = NULL;
sc.nmhdr.idFrom = 0;
sc.nmhdr.code = EN_SELCHANGE;
ME_GetSelectionOfs(editor, &sc.chrg.cpMin, &sc.chrg.cpMax);
sc.seltyp = SEL_EMPTY;
if (sc.chrg.cpMin != sc.chrg.cpMax)
sc.seltyp |= SEL_TEXT;
if (sc.chrg.cpMin < sc.chrg.cpMax+1) /* what were RICHEDIT authors thinking ? */
sc.seltyp |= SEL_MULTICHAR;
TRACE("cpMin=%d cpMax=%d seltyp=%d (%s %s)\n",
sc.chrg.cpMin, sc.chrg.cpMax, sc.seltyp,
(sc.seltyp & SEL_TEXT) ? "SEL_TEXT" : "",
(sc.seltyp & SEL_MULTICHAR) ? "SEL_MULTICHAR" : "");
if (sc.chrg.cpMin != editor->notified_cr.cpMin || sc.chrg.cpMax != editor->notified_cr.cpMax)
{
ME_ClearTempStyle(editor);
editor->notified_cr = sc.chrg;
ITextHost_TxNotify(editor->texthost, sc.nmhdr.code, &sc);
}
}
void ME_DeleteSelection(ME_TextEditor *editor)
{
int from, to;
int nStartCursor = ME_GetSelectionOfs(editor, &from, &to);
int nEndCursor = nStartCursor ^ 1;
ME_DeleteTextAtCursor(editor, nStartCursor, to - from);
editor->pCursors[nEndCursor] = editor->pCursors[nStartCursor];
}
static HRESULT WINAPI
IRichEditOle_fnGetClipboardData(IRichEditOle *me, CHARRANGE *lpchrg,
DWORD reco, LPDATAOBJECT *lplpdataobj)
{
IRichEditOleImpl *This = impl_from_IRichEditOle(me);
ME_Cursor start;
int nChars;
TRACE("(%p,%p,%d)\n",This, lpchrg, reco);
if(!lplpdataobj)
return E_INVALIDARG;
if(!lpchrg) {
int nFrom, nTo, nStartCur = ME_GetSelectionOfs(This->editor, &nFrom, &nTo);
start = This->editor->pCursors[nStartCur];
nChars = nTo - nFrom;
} else {
ME_CursorFromCharOfs(This->editor, lpchrg->cpMin, &start);
nChars = lpchrg->cpMax - lpchrg->cpMin;
}
return ME_GetDataObject(This->editor, &start, nChars, lplpdataobj);
}
int ME_SetSelection(ME_TextEditor *editor, int from, int to)
{
int selectionEnd = 0;
const int len = ME_GetTextLength(editor);
/* all negative values are effectively the same */
if (from < 0)
from = -1;
if (to < 0)
to = -1;
/* select all */
if (from == 0 && to == -1)
{
ME_SetCursorToStart(editor, &editor->pCursors[1]);
ME_SetCursorToEnd(editor, &editor->pCursors[0]);
editor->pCursors[0].nOffset = editor->pCursors[0].pRun->member.run.len;
ME_InvalidateSelection(editor);
return len + 1;
}
/* if both values are equal and also out of bound, that means to */
/* put the selection at the end of the text */
if ((from == to) && (to < 0 || to > len))
{
selectionEnd = 1;
}
else
{
/* if from is negative and to is positive then selection is */
/* deselected and caret moved to end of the current selection */
if (from < 0)
{
int start, end;
ME_GetSelectionOfs(editor, &start, &end);
if (start != end)
{
if (end > len)
{
editor->pCursors[0].nOffset = 0;
end --;
}
editor->pCursors[1] = editor->pCursors[0];
ME_Repaint(editor);
}
return end;
}
/* adjust to if it's a negative value */
if (to < 0)
to = len + 1;
/* flip from and to if they are reversed */
if (from>to)
{
int tmp = from;
from = to;
to = tmp;
}
/* after fiddling with the values, we find from > len && to > len */
if (from > len)
selectionEnd = 1;
/* special case with to too big */
else if (to > len)
to = len + 1;
}
if (selectionEnd)
{
ME_SetCursorToEnd(editor, &editor->pCursors[0]);
editor->pCursors[1] = editor->pCursors[0];
ME_InvalidateSelection(editor);
return len;
}
ME_CursorFromCharOfs(editor, from, &editor->pCursors[1]);
editor->pCursors[0] = editor->pCursors[1];
ME_MoveCursorChars(editor, &editor->pCursors[0], to - from);
/* Selection is not allowed in the middle of an end paragraph run. */
if (editor->pCursors[1].pRun->member.run.nFlags & MERF_ENDPARA)
editor->pCursors[1].nOffset = 0;
if (editor->pCursors[0].pRun->member.run.nFlags & MERF_ENDPARA)
{
if (to > len)
editor->pCursors[0].nOffset = editor->pCursors[0].pRun->member.run.len;
else
editor->pCursors[0].nOffset = 0;
}
return to;
}
void ME_DeleteSelection(ME_TextEditor *editor)
{
int from, to;
int nStartCursor = ME_GetSelectionOfs(editor, &from, &to);
ME_DeleteTextAtCursor(editor, nStartCursor, to - from);
}
