int ME_GetSelection(ME_TextEditor *editor, ME_Cursor **from, ME_Cursor **to)
{
int from_ofs = ME_GetCursorOfs( &editor->pCursors[0] );
int to_ofs = ME_GetCursorOfs( &editor->pCursors[1] );
BOOL swap = (from_ofs > to_ofs);
if (from_ofs == to_ofs)
{
/* If cursor[0] is at the beginning of a run and cursor[1] at the end
of the prev run then we need to swap. */
if (editor->pCursors[0].nOffset < editor->pCursors[1].nOffset)
swap = TRUE;
}
if (!swap)
{
*from = &editor->pCursors[0];
*to = &editor->pCursors[1];
return 0;
} else {
*from = &editor->pCursors[1];
*to = &editor->pCursors[0];
return 1;
}
}
void ME_TabPressedInTable(ME_TextEditor *editor, BOOL bSelectedRow)
{
/* FIXME: Shift tab should move to the previous cell. */
ME_Cursor fromCursor, toCursor;
ME_InvalidateSelection(editor);
{
int from, to;
from = ME_GetCursorOfs(editor, 0);
to = ME_GetCursorOfs(editor, 1);
if (from <= to)
{
fromCursor = editor->pCursors[0];
toCursor = editor->pCursors[1];
} else {
fromCursor = editor->pCursors[1];
toCursor = editor->pCursors[0];
}
}
if (!editor->bEmulateVersion10) /* v4.1 */
{
if (!ME_IsInTable(toCursor.pRun))
{
editor->pCursors[0] = toCursor;
editor->pCursors[1] = toCursor;
} else {
ME_SelectOrInsertNextCell(editor, toCursor.pRun);
}
} else { /* v1.0 - 3.0 */
if (!ME_IsInTable(fromCursor.pRun)) {
editor->pCursors[0] = fromCursor;
editor->pCursors[1] = fromCursor;
/* FIXME: For some reason the caret is shown at the start of the
* previous paragraph in v1.0 to v3.0, and bCaretAtEnd only works
* within the paragraph for wrapped lines. */
if (ME_FindItemBack(fromCursor.pRun, diRun))
editor->bCaretAtEnd = TRUE;
} else if ((bSelectedRow || !ME_IsInTable(toCursor.pRun))) {
ME_SelectOrInsertNextCell(editor, fromCursor.pRun);
} else {
if (ME_IsSelection(editor) && !toCursor.nOffset)
{
ME_DisplayItem *run;
run = ME_FindItemBack(toCursor.pRun, diRunOrParagraphOrEnd);
if (run->type == diRun && run->member.run.nFlags & MERF_TAB)
ME_SelectOrInsertNextCell(editor, run);
else
ME_SelectOrInsertNextCell(editor, toCursor.pRun);
} else {
ME_SelectOrInsertNextCell(editor, toCursor.pRun);
}
}
}
ME_InvalidateSelection(editor);
ME_Repaint(editor);
HideCaret(editor->hWnd);
ME_ShowCaret(editor);
ME_SendSelChange(editor);
}
static int ME_GetSelCursor(ME_TextEditor *editor, int dir)
{
int cdir = ME_GetCursorOfs(editor, 0) - ME_GetCursorOfs(editor, 1);
if (cdir*dir>0)
return 0;
else
return 1;
}
void ME_GetSelection(ME_TextEditor *editor, int *from, int *to)
{
*from = ME_GetCursorOfs(editor, 0);
*to = ME_GetCursorOfs(editor, 1);
if (*from > *to)
{
int tmp = *from;
*from = *to;
*to = tmp;
}
}
int ME_GetSelection(ME_TextEditor *editor, ME_Cursor **from, ME_Cursor **to)
{
if (ME_GetCursorOfs(&editor->pCursors[0]) < ME_GetCursorOfs(&editor->pCursors[1]))
{
*from = &editor->pCursors[0];
*to = &editor->pCursors[1];
return 0;
} else {
*from = &editor->pCursors[1];
*to = &editor->pCursors[0];
return 1;
}
}
/* Extends the selection with a word, line, or paragraph selection type.
*
* The selection is anchored by editor->pCursors[2-3] such that the text
* between the anchors will remain selected, and one end will be extended.
*
* editor->pCursors[0] should have the position to extend the selection to
* before this function is called.
*
* Nothing will be done if editor->nSelectionType equals stPosition.
*/
static void ME_ExtendAnchorSelection(ME_TextEditor *editor)
{
ME_Cursor tmp_cursor;
int curOfs, anchorStartOfs, anchorEndOfs;
if (editor->nSelectionType == stPosition || editor->nSelectionType == stDocument)
return;
curOfs = ME_GetCursorOfs(&editor->pCursors[0]);
anchorStartOfs = ME_GetCursorOfs(&editor->pCursors[3]);
anchorEndOfs = ME_GetCursorOfs(&editor->pCursors[2]);
tmp_cursor = editor->pCursors[0];
editor->pCursors[0] = editor->pCursors[2];
editor->pCursors[1] = editor->pCursors[3];
if (curOfs < anchorStartOfs)
{
/* Extend the left side of selection */
editor->pCursors[1] = tmp_cursor;
if (editor->nSelectionType == stWord)
ME_MoveCursorWords(editor, &editor->pCursors[1], -1);
else
{
ME_DisplayItem *pItem;
ME_DIType searchType = ((editor->nSelectionType == stLine) ?
diStartRowOrParagraph:diParagraph);
pItem = ME_FindItemBack(editor->pCursors[1].pRun, searchType);
editor->pCursors[1].pRun = ME_FindItemFwd(pItem, diRun);
editor->pCursors[1].pPara = ME_GetParagraph(editor->pCursors[1].pRun);
editor->pCursors[1].nOffset = 0;
}
}
else if (curOfs >= anchorEndOfs)
{
/* Extend the right side of selection */
editor->pCursors[0] = tmp_cursor;
if (editor->nSelectionType == stWord)
ME_MoveCursorWords(editor, &editor->pCursors[0], +1);
else
{
ME_DisplayItem *pItem;
ME_DIType searchType = ((editor->nSelectionType == stLine) ?
diStartRowOrParagraphOrEnd:diParagraphOrEnd);
pItem = ME_FindItemFwd(editor->pCursors[0].pRun, searchType);
if (pItem->type == diTextEnd)
editor->pCursors[0].pRun = ME_FindItemBack(pItem, diRun);
else
editor->pCursors[0].pRun = ME_FindItemFwd(pItem, diRun);
editor->pCursors[0].pPara = ME_GetParagraph(editor->pCursors[0].pRun);
editor->pCursors[0].nOffset = 0;
}
}
}
int ME_GetSelectionOfs(ME_TextEditor *editor, int *from, int *to)
{
*from = ME_GetCursorOfs(&editor->pCursors[0]);
*to = ME_GetCursorOfs(&editor->pCursors[1]);
if (*from > *to)
{
int tmp = *from;
*from = *to;
*to = tmp;
return 1;
}
return 0;
}
HRESULT ME_GetDataObject(ME_TextEditor *editor, const ME_Cursor *start,
int nChars, LPDATAOBJECT *lplpdataobj)
{
DataObjectImpl *obj;
TRACE("(%p,%d,%d)\n", editor, ME_GetCursorOfs(start), nChars);
obj = heap_alloc(sizeof(DataObjectImpl));
if(cfRTF == 0)
cfRTF = RegisterClipboardFormatA("Rich Text Format");
obj->IDataObject_iface.lpVtbl = &VT_DataObjectImpl;
obj->ref = 1;
obj->unicode = get_unicode_text(editor, start, nChars);
obj->rtf = NULL;
obj->fmtetc_cnt = 1;
if(editor->mode & TM_RICHTEXT)
obj->fmtetc_cnt++;
obj->fmtetc = GlobalAlloc(GMEM_ZEROINIT, obj->fmtetc_cnt*sizeof(FORMATETC));
InitFormatEtc(obj->fmtetc[0], CF_UNICODETEXT, TYMED_HGLOBAL);
if(editor->mode & TM_RICHTEXT) {
obj->rtf = get_rtf_text(editor, start, nChars);
InitFormatEtc(obj->fmtetc[1], cfRTF, TYMED_HGLOBAL);
}
*lplpdataobj = (LPDATAOBJECT)obj;
return S_OK;
}
BOOL ME_DeleteTextAtCursor(ME_TextEditor *editor, int nCursor, int nChars)
{
assert(nCursor>=0 && nCursor<editor->nCursors);
/* text operations set modified state */
editor->nModifyStep = 1;
return ME_InternalDeleteText(editor, ME_GetCursorOfs(editor, nCursor), nChars,
FALSE);
}
static HGLOBAL get_unicode_text(ME_TextEditor *editor, const ME_Cursor *start, int nChars)
{
int pars = 0;
WCHAR *data;
HANDLE ret;
ME_DisplayItem *para;
int nEnd = ME_GetCursorOfs(start) + nChars;
/* count paragraphs in range */
para = start->pPara;
while((para = para->member.para.next_para) &&
para->member.para.nCharOfs <= nEnd)
pars++;
ret = GlobalAlloc(GMEM_MOVEABLE, sizeof(WCHAR) * (nChars + pars + 1));
data = GlobalLock(ret);
ME_GetTextW(editor, data, nChars + pars, start, nChars, TRUE, FALSE);
GlobalUnlock(ret);
return ret;
}
int ME_GetTextLength(ME_TextEditor *editor)
{
ME_Cursor cursor;
ME_SetCursorToEnd(editor, &cursor);
return ME_GetCursorOfs(&cursor);
}
/* Move the cursor nRelOfs characters (either forwards or backwards)
*
* returns the actual number of characters moved.
**/
int ME_MoveCursorChars(ME_TextEditor *editor, ME_Cursor *cursor, int nRelOfs)
{
cursor->nOffset += nRelOfs;
if (cursor->nOffset < 0)
{
cursor->nOffset += cursor->pRun->member.run.nCharOfs;
if (cursor->nOffset >= 0)
{
/* new offset in the same paragraph */
do {
cursor->pRun = ME_FindItemBack(cursor->pRun, diRun);
} while (cursor->nOffset < cursor->pRun->member.run.nCharOfs);
cursor->nOffset -= cursor->pRun->member.run.nCharOfs;
return nRelOfs;
}
cursor->nOffset += cursor->pPara->member.para.nCharOfs;
if (cursor->nOffset <= 0)
{
/* moved to the start of the text */
nRelOfs -= cursor->nOffset;
ME_SetCursorToStart(editor, cursor);
return nRelOfs;
}
/* new offset in a previous paragraph */
do {
cursor->pPara = cursor->pPara->member.para.prev_para;
} while (cursor->nOffset < cursor->pPara->member.para.nCharOfs);
cursor->nOffset -= cursor->pPara->member.para.nCharOfs;
cursor->pRun = ME_FindItemBack(cursor->pPara->member.para.next_para, diRun);
while (cursor->nOffset < cursor->pRun->member.run.nCharOfs) {
cursor->pRun = ME_FindItemBack(cursor->pRun, diRun);
}
cursor->nOffset -= cursor->pRun->member.run.nCharOfs;
} else if (cursor->nOffset >= cursor->pRun->member.run.len) {
ME_DisplayItem *next_para;
int new_offset;
new_offset = ME_GetCursorOfs(cursor);
next_para = cursor->pPara->member.para.next_para;
if (new_offset < next_para->member.para.nCharOfs)
{
/* new offset in the same paragraph */
do {
cursor->nOffset -= cursor->pRun->member.run.len;
cursor->pRun = ME_FindItemFwd(cursor->pRun, diRun);
} while (cursor->nOffset >= cursor->pRun->member.run.len);
return nRelOfs;
}
if (new_offset >= ME_GetTextLength(editor))
{
/* new offset at the end of the text */
ME_SetCursorToEnd(editor, cursor);
nRelOfs -= new_offset - ME_GetTextLength(editor);
return nRelOfs;
}
/* new offset in a following paragraph */
do {
cursor->pPara = next_para;
next_para = next_para->member.para.next_para;
} while (new_offset >= next_para->member.para.nCharOfs);
cursor->nOffset = new_offset - cursor->pPara->member.para.nCharOfs;
cursor->pRun = ME_FindItemFwd(cursor->pPara, diRun);
while (cursor->nOffset >= cursor->pRun->member.run.len)
{
cursor->nOffset -= cursor->pRun->member.run.len;
cursor->pRun = ME_FindItemFwd(cursor->pRun, diRun);
}
} /* else new offset is in the same run */
return nRelOfs;
}
BOOL ME_InternalDeleteText(ME_TextEditor *editor, ME_Cursor *start,
int nChars, BOOL bForce)
{
ME_Cursor c = *start;
int nOfs = ME_GetCursorOfs(start), text_len = ME_GetTextLength( editor );
int shift = 0;
int totalChars = nChars;
ME_DisplayItem *start_para;
BOOL delete_all = FALSE;
/* Prevent deletion past last end of paragraph run. */
nChars = min(nChars, text_len - nOfs);
if (nChars == text_len) delete_all = TRUE;
start_para = c.pPara;
if (!bForce)
{
ME_ProtectPartialTableDeletion(editor, &c, &nChars);
if (nChars == 0)
return FALSE;
}
while(nChars > 0)
{
ME_Run *run;
ME_CursorFromCharOfs(editor, nOfs+nChars, &c);
if (!c.nOffset &&
nOfs+nChars == (c.pRun->member.run.nCharOfs
+ c.pPara->member.para.nCharOfs))
{
/* We aren't deleting anything in this run, so we will go back to the
* last run we are deleting text in. */
ME_PrevRun(&c.pPara, &c.pRun);
c.nOffset = c.pRun->member.run.len;
}
run = &c.pRun->member.run;
if (run->nFlags & MERF_ENDPARA) {
int eollen = c.pRun->member.run.len;
BOOL keepFirstParaFormat;
if (!ME_FindItemFwd(c.pRun, diParagraph))
{
return TRUE;
}
keepFirstParaFormat = (totalChars == nChars && nChars <= eollen &&
run->nCharOfs);
if (!editor->bEmulateVersion10) /* v4.1 */
{
ME_DisplayItem *next_para = ME_FindItemFwd(c.pRun, diParagraphOrEnd);
ME_DisplayItem *this_para = next_para->member.para.prev_para;
/* The end of paragraph before a table row is only deleted if there
* is nothing else on the line before it. */
if (this_para == start_para &&
next_para->member.para.nFlags & MEPF_ROWSTART)
{
/* If the paragraph will be empty, then it should be deleted, however
* it still might have text right now which would inherit the
* MEPF_STARTROW property if we joined it right now.
* Instead we will delete it after the preceding text is deleted. */
if (nOfs > this_para->member.para.nCharOfs) {
/* Skip this end of line. */
nChars -= (eollen < nChars) ? eollen : nChars;
continue;
}
keepFirstParaFormat = TRUE;
}
}
ME_JoinParagraphs(editor, c.pPara, keepFirstParaFormat);
/* ME_SkipAndPropagateCharOffset(p->pRun, shift); */
ME_CheckCharOffsets(editor);
nChars -= (eollen < nChars) ? eollen : nChars;
continue;
}
else
{
ME_Cursor cursor;
int nCharsToDelete = min(nChars, c.nOffset);
int i;
c.nOffset -= nCharsToDelete;
ME_FindItemBack(c.pRun, diParagraph)->member.para.nFlags |= MEPF_REWRAP;
cursor = c;
/* nChars is the number of characters that should be deleted from the
PRECEDING runs (these BEFORE cursor.pRun)
nCharsToDelete is a number of chars to delete from THIS run */
nChars -= nCharsToDelete;
shift -= nCharsToDelete;
TRACE("Deleting %d (remaning %d) chars at %d in %s (%d)\n",
nCharsToDelete, nChars, c.nOffset,
debugstr_run( run ), run->len);
/* nOfs is a character offset (from the start of the document
to the current (deleted) run */
add_undo_insert_run( editor, nOfs + nChars, get_text( run, c.nOffset ), nCharsToDelete, run->nFlags, run->style );
ME_StrDeleteV(run->para->text, run->nCharOfs + c.nOffset, nCharsToDelete);
run->len -= nCharsToDelete;
TRACE("Post deletion string: %s (%d)\n", debugstr_run( run ), run->len);
TRACE("Shift value: %d\n", shift);
/* update cursors (including c) */
for (i=-1; i<editor->nCursors; i++) {
ME_Cursor *pThisCur = editor->pCursors + i;
if (i == -1) pThisCur = &c;
if (pThisCur->pRun == cursor.pRun) {
if (pThisCur->nOffset > cursor.nOffset) {
if (pThisCur->nOffset-cursor.nOffset < nCharsToDelete)
pThisCur->nOffset = cursor.nOffset;
else
pThisCur->nOffset -= nCharsToDelete;
assert(pThisCur->nOffset >= 0);
assert(pThisCur->nOffset <= run->len);
}
if (pThisCur->nOffset == run->len)
{
pThisCur->pRun = ME_FindItemFwd(pThisCur->pRun, diRunOrParagraphOrEnd);
assert(pThisCur->pRun->type == diRun);
pThisCur->nOffset = 0;
}
}
}
/* c = updated data now */
if (c.pRun == cursor.pRun)
ME_SkipAndPropagateCharOffset(c.pRun, shift);
else
ME_PropagateCharOffset(c.pRun, shift);
if (!cursor.pRun->member.run.len)
{
TRACE("Removing empty run\n");
ME_Remove(cursor.pRun);
ME_DestroyDisplayItem(cursor.pRun);
}
shift = 0;
/*
ME_CheckCharOffsets(editor);
*/
continue;
}
}
if (delete_all) ME_SetDefaultParaFormat( editor, start_para->member.para.pFmt );
return TRUE;
}
void ME_DeleteTextAtCursor(ME_TextEditor *editor, int nCursor,
int nChars)
{
assert(nCursor>=0 && nCursor<editor->nCursors);
ME_InternalDeleteText(editor, ME_GetCursorOfs(editor, nCursor), nChars);
}
/* Table rows should either be deleted completely or not at all. */
void ME_ProtectPartialTableDeletion(ME_TextEditor *editor, ME_Cursor *c, int *nChars)
{
int nOfs = ME_GetCursorOfs(c);
ME_Cursor c2 = *c;
ME_DisplayItem *this_para = c->pPara;
ME_DisplayItem *end_para;
ME_MoveCursorChars(editor, &c2, *nChars);
end_para = c2.pPara;
if (c2.pRun->member.run.nFlags & MERF_ENDPARA) {
/* End offset might be in the middle of the end paragraph run.
* If this is the case, then we need to use the next paragraph as the last
* paragraphs.
*/
int remaining = nOfs + *nChars - c2.pRun->member.run.nCharOfs
- end_para->member.para.nCharOfs;
if (remaining)
{
assert(remaining < c2.pRun->member.run.len);
end_para = end_para->member.para.next_para;
}
}
if (!editor->bEmulateVersion10) { /* v4.1 */
if (this_para->member.para.pCell != end_para->member.para.pCell ||
((this_para->member.para.nFlags|end_para->member.para.nFlags)
& (MEPF_ROWSTART|MEPF_ROWEND)))
{
while (this_para != end_para)
{
ME_DisplayItem *next_para = this_para->member.para.next_para;
BOOL bTruancateDeletion = FALSE;
if (this_para->member.para.nFlags & MEPF_ROWSTART) {
/* The following while loop assumes that next_para is MEPF_ROWSTART,
* so moving back one paragraph let's it be processed as the start
* of the row. */
next_para = this_para;
this_para = this_para->member.para.prev_para;
} else if (next_para->member.para.pCell != this_para->member.para.pCell
|| this_para->member.para.nFlags & MEPF_ROWEND)
{
/* Start of the deletion from after the start of the table row. */
bTruancateDeletion = TRUE;
}
while (!bTruancateDeletion &&
next_para->member.para.nFlags & MEPF_ROWSTART)
{
next_para = ME_GetTableRowEnd(next_para)->member.para.next_para;
if (next_para->member.para.nCharOfs > nOfs + *nChars)
{
/* End of deletion is not past the end of the table row. */
next_para = this_para->member.para.next_para;
/* Delete the end paragraph preceding the table row if the
* preceding table row will be empty. */
if (this_para->member.para.nCharOfs >= nOfs)
{
next_para = next_para->member.para.next_para;
}
bTruancateDeletion = TRUE;
} else {
this_para = next_para->member.para.prev_para;
}
}
if (bTruancateDeletion)
{
ME_Run *end_run = &ME_FindItemBack(next_para, diRun)->member.run;
int nCharsNew = (next_para->member.para.nCharOfs - nOfs
- end_run->len);
nCharsNew = max(nCharsNew, 0);
assert(nCharsNew <= *nChars);
*nChars = nCharsNew;
break;
}
this_para = next_para;
}
}
} else { /* v1.0 - 3.0 */
ME_DisplayItem *pRun;
int nCharsToBoundary;
if ((this_para->member.para.nCharOfs != nOfs || this_para == end_para) &&
this_para->member.para.pFmt->dwMask & PFM_TABLE &&
this_para->member.para.pFmt->wEffects & PFE_TABLE)
{
pRun = c->pRun;
/* Find the next tab or end paragraph to use as a delete boundary */
while (!(pRun->member.run.nFlags & (MERF_TAB|MERF_ENDPARA)))
pRun = ME_FindItemFwd(pRun, diRun);
nCharsToBoundary = pRun->member.run.nCharOfs
- c->pRun->member.run.nCharOfs
- c->nOffset;
*nChars = min(*nChars, nCharsToBoundary);
} else if (end_para->member.para.pFmt->dwMask & PFM_TABLE &&
end_para->member.para.pFmt->wEffects & PFE_TABLE)
{
/* The deletion starts from before the row, so don't join it with
* previous non-empty paragraphs. */
ME_DisplayItem *curPara;
pRun = NULL;
if (nOfs > this_para->member.para.nCharOfs) {
pRun = ME_FindItemBack(end_para, diRun);
curPara = end_para->member.para.prev_para;
}
if (!pRun) {
pRun = ME_FindItemFwd(end_para, diRun);
curPara = end_para;
}
if (pRun)
{
nCharsToBoundary = curPara->member.para.nCharOfs
+ pRun->member.run.nCharOfs
- nOfs;
if (nCharsToBoundary >= 0)
*nChars = min(*nChars, nCharsToBoundary);
}
}
if (*nChars < 0)
nChars = 0;
}
}
void
ME_QueueInvalidateFromCursor(ME_TextEditor *editor, int nCursor)
{
editor->nInvalidOfs = ME_GetCursorOfs(editor, nCursor);
}