static void
ME_SelectByType(ME_TextEditor *editor, ME_SelectionType selectionType)
{
/* pCursor[0] is the end of the selection
* pCursor[1] is the start of the selection (or the position selection anchor)
* pCursor[2] and [3] are the selection anchors that are backed up
* so they are kept when the selection changes for drag selection.
*/
editor->nSelectionType = selectionType;
switch(selectionType)
{
case stPosition:
break;
case stWord:
ME_MoveCursorWords(editor, &editor->pCursors[0], +1);
editor->pCursors[1] = editor->pCursors[0];
ME_MoveCursorWords(editor, &editor->pCursors[1], -1);
break;
case stLine:
case stParagraph:
{
ME_DisplayItem *pItem;
ME_DIType fwdSearchType, backSearchType;
if (selectionType == stParagraph) {
backSearchType = diParagraph;
fwdSearchType = diParagraphOrEnd;
} else {
backSearchType = diStartRow;
fwdSearchType = diStartRowOrParagraphOrEnd;
}
pItem = ME_FindItemFwd(editor->pCursors[0].pRun, fwdSearchType);
assert(pItem);
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;
pItem = ME_FindItemBack(pItem, backSearchType);
editor->pCursors[1].pRun = ME_FindItemFwd(pItem, diRun);
editor->pCursors[1].pPara = ME_GetParagraph(editor->pCursors[1].pRun);
editor->pCursors[1].nOffset = 0;
break;
}
case stDocument:
/* Select everything with cursor anchored from the start of the text */
editor->nSelectionType = stDocument;
ME_SetCursorToStart(editor, &editor->pCursors[1]);
ME_SetCursorToEnd(editor, &editor->pCursors[0]);
break;
default: assert(0);
}
/* Store the anchor positions for extending the selection. */
editor->pCursors[2] = editor->pCursors[0];
editor->pCursors[3] = editor->pCursors[1];
}
/* Make sure the cursor is not in the hidden table row start paragraph
* without a selection. */
void ME_MoveCursorFromTableRowStartParagraph(ME_TextEditor *editor)
{
ME_DisplayItem *para = ME_GetParagraph(editor->pCursors[0].pRun);
if (para == ME_GetParagraph(editor->pCursors[1].pRun) &&
para->member.para.nFlags & MEPF_ROWSTART) {
/* The cursors should not be at the hidden start row paragraph without
* a selection, so the cursor is moved into the first cell. */
para = para->member.para.next_para;
editor->pCursors[0].pRun = ME_FindItemFwd(para, diRun);
editor->pCursors[0].nOffset = 0;
editor->pCursors[1] = editor->pCursors[0];
}
}
/* 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;
}
}
}
ME_DisplayItem* ME_InsertTableRowStartAtParagraph(ME_TextEditor *editor,
ME_DisplayItem *para)
{
ME_DisplayItem *prev_para, *end_para;
ME_Cursor savedCursor = editor->pCursors[0];
ME_DisplayItem *startRowPara;
editor->pCursors[0].pRun = ME_FindItemFwd(para, diRun);
editor->pCursors[0].nOffset = 0;
editor->pCursors[1] = editor->pCursors[0];
startRowPara = ME_InsertTableRowStartFromCursor(editor);
editor->pCursors[0] = savedCursor;
editor->pCursors[1] = editor->pCursors[0];
end_para = ME_GetParagraph(editor->pCursors[0].pRun)->member.para.next_para;
prev_para = startRowPara->member.para.next_para;
para = prev_para->member.para.next_para;
while (para != end_para)
{
para->member.para.pCell = prev_para->member.para.pCell;
para->member.para.nFlags |= MEPF_CELL;
para->member.para.nFlags &= ~(MEPF_ROWSTART|MEPF_ROWEND);
para->member.para.pFmt->dwMask |= PFM_TABLE|PFM_TABLEROWDELIMITER;
para->member.para.pFmt->wEffects |= PFE_TABLE;
para->member.para.pFmt->wEffects &= ~PFE_TABLEROWDELIMITER;
prev_para = para;
para = para->member.para.next_para;
}
return startRowPara;
}
/******************************************************************************
* ME_JoinRuns
*
* Merges two adjacent runs, the one given as a parameter and the next one.
*/
void ME_JoinRuns(ME_TextEditor *editor, ME_DisplayItem *p)
{
ME_DisplayItem *pNext = p->next;
int i;
assert(p->type == diRun && pNext->type == diRun);
assert(p->member.run.nCharOfs != -1);
ME_GetParagraph(p)->member.para.nFlags |= MEPF_REWRAP;
/* Update all cursors so that they don't contain the soon deleted run */
for (i=0; i<editor->nCursors; i++) {
if (editor->pCursors[i].pRun == pNext) {
editor->pCursors[i].pRun = p;
editor->pCursors[i].nOffset += p->member.run.len;
}
}
p->member.run.len += pNext->member.run.len;
ME_Remove(pNext);
ME_DestroyDisplayItem(pNext);
ME_UpdateRunFlags(editor, &p->member.run);
if(TRACE_ON(richedit))
{
TRACE("Before check after join\n");
ME_CheckCharOffsets(editor);
TRACE("After check after join\n");
}
}
int ME_GetCursorOfs(ME_TextEditor *editor, int nCursor)
{
ME_Cursor *pCursor = &editor->pCursors[nCursor];
return ME_GetParagraph(pCursor->pRun)->member.para.nCharOfs
+ pCursor->pRun->member.run.nCharOfs + pCursor->nOffset;
}
static void ME_ArrowPageDown(ME_TextEditor *editor, ME_Cursor *pCursor)
{
ME_DisplayItem *pLast;
int x, y;
/* Find y position of the last row */
pLast = editor->pBuffer->pLast;
y = pLast->member.para.prev_para->member.para.pt.y
+ ME_FindItemBack(pLast, diStartRow)->member.row.pt.y;
x = ME_GetXForArrow(editor, pCursor);
if (editor->vert_si.nPos >= y - editor->sizeWindow.cy)
{
ME_SetCursorToEnd(editor, pCursor);
editor->bCaretAtEnd = FALSE;
} else {
ME_DisplayItem *pRun = pCursor->pRun;
ME_DisplayItem *p;
int yd, yp;
int yOldScrollPos = editor->vert_si.nPos;
if (!pCursor->nOffset && editor->bCaretAtEnd)
pRun = ME_FindItemBack(pRun, diRun);
p = ME_FindItemBack(pRun, diStartRowOrParagraph);
assert(p->type == diStartRow);
yp = ME_FindItemBack(p, diParagraph)->member.para.pt.y;
y = yp + p->member.row.pt.y;
/* For native richedit controls:
* v1.0 - v3.1 can only scroll down as far as the scrollbar lets us
* v4.1 can scroll past this position here. */
ME_ScrollDown(editor, editor->sizeWindow.cy);
/* Only move the cursor by the amount scrolled. */
yd = y + editor->vert_si.nPos - yOldScrollPos;
pLast = p;
do {
p = ME_FindItemFwd(p, diStartRowOrParagraph);
if (!p)
break;
if (p->type == diParagraph) {
yp = p->member.para.pt.y;
continue;
}
y = yp + p->member.row.pt.y;
if (y >= yd)
break;
pLast = p;
} while(1);
pCursor->pRun = ME_FindRunInRow(editor, pLast, x, &pCursor->nOffset,
&editor->bCaretAtEnd);
pCursor->pPara = ME_GetParagraph(pCursor->pRun);
}
assert(pCursor->pRun);
assert(pCursor->pRun->type == diRun);
}
/* Finds the run and offset from the pixel position.
*
* x & y are pixel positions in virtual coordinates into the rich edit control,
* so client coordinates must first be adjusted by the scroll position.
*
* returns TRUE if the result was exactly under the cursor, otherwise returns
* FALSE, and result is set to the closest position to the coordinates.
*/
static BOOL ME_FindPixelPos(ME_TextEditor *editor, int x, int y,
ME_Cursor *result, BOOL *is_eol)
{
ME_DisplayItem *p = editor->pBuffer->pFirst->member.para.next_para;
BOOL isExact = TRUE;
x -= editor->rcFormat.left;
y -= editor->rcFormat.top;
if (is_eol)
*is_eol = FALSE;
/* find paragraph */
for (; p != editor->pBuffer->pLast; p = p->member.para.next_para)
{
assert(p->type == diParagraph);
if (y < p->member.para.pt.y + p->member.para.nHeight)
{
if (p->member.para.nFlags & MEPF_ROWSTART)
p = ME_FindPixelPosInTableRow(x, y, p);
y -= p->member.para.pt.y;
p = ME_FindItemFwd(p, diStartRow);
break;
} else if (p->member.para.nFlags & MEPF_ROWSTART) {
p = ME_GetTableRowEnd(p);
}
}
/* find row */
for (; p != editor->pBuffer->pLast; )
{
ME_DisplayItem *pp;
assert(p->type == diStartRow);
if (y < p->member.row.pt.y + p->member.row.nHeight) break;
pp = ME_FindItemFwd(p, diStartRow);
if (!pp) break;
p = pp;
}
if (p == editor->pBuffer->pLast)
{
/* The position is below the last paragraph, so the last row will be used
* rather than the end of the text, so the x position will be used to
* determine the offset closest to the pixel position. */
isExact = FALSE;
p = ME_FindItemBack(p, diStartRow);
if (!p) p = editor->pBuffer->pLast;
}
assert( p->type == diStartRow || p == editor->pBuffer->pLast );
if( p->type == diStartRow )
return ME_FindRunInRow( editor, p, x, result, is_eol ) && isExact;
result->pRun = ME_FindItemBack(p, diRun);
result->pPara = ME_GetParagraph(result->pRun);
result->nOffset = 0;
assert(result->pRun->member.run.nFlags & MERF_ENDPARA);
return FALSE;
}
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 void ME_ArrowPageUp(ME_TextEditor *editor, ME_Cursor *pCursor)
{
ME_DisplayItem *p = ME_FindItemFwd(editor->pBuffer->pFirst, diStartRow);
if (editor->vert_si.nPos < p->member.row.nHeight)
{
ME_SetCursorToStart(editor, pCursor);
editor->bCaretAtEnd = FALSE;
/* Native clears seems to clear this x value on page up at the top
* of the text, but not on page down at the end of the text.
* Doesn't make sense, but we try to be bug for bug compatible. */
editor->nUDArrowX = -1;
} else {
ME_DisplayItem *pRun = pCursor->pRun;
ME_DisplayItem *pLast;
int x, y, yd, yp;
int yOldScrollPos = editor->vert_si.nPos;
x = ME_GetXForArrow(editor, pCursor);
if (!pCursor->nOffset && editor->bCaretAtEnd)
pRun = ME_FindItemBack(pRun, diRun);
p = ME_FindItemBack(pRun, diStartRowOrParagraph);
assert(p->type == diStartRow);
yp = ME_FindItemBack(p, diParagraph)->member.para.pt.y;
y = yp + p->member.row.pt.y;
ME_ScrollUp(editor, editor->sizeWindow.cy);
/* Only move the cursor by the amount scrolled. */
yd = y + editor->vert_si.nPos - yOldScrollPos;
pLast = p;
do {
p = ME_FindItemBack(p, diStartRowOrParagraph);
if (!p)
break;
if (p->type == diParagraph) { /* crossing paragraphs */
if (p->member.para.prev_para == NULL)
break;
yp = p->member.para.prev_para->member.para.pt.y;
continue;
}
y = yp + p->member.row.pt.y;
if (y < yd)
break;
pLast = p;
} while(1);
pCursor->pRun = ME_FindRunInRow(editor, pLast, x, &pCursor->nOffset,
&editor->bCaretAtEnd);
pCursor->pPara = ME_GetParagraph(pCursor->pRun);
}
assert(pCursor->pRun);
assert(pCursor->pRun->type == diRun);
}
static BOOL ME_FindRunInRow(ME_TextEditor *editor, ME_DisplayItem *pRow,
int x, ME_Cursor *cursor, BOOL *pbCaretAtEnd)
{
ME_DisplayItem *pNext, *pLastRun;
ME_Row *row = &pRow->member.row;
BOOL exact = TRUE;
if (x < row->pt.x)
{
x = row->pt.x;
exact = FALSE;
}
pNext = ME_FindItemFwd(pRow, diRunOrStartRow);
assert(pNext->type == diRun);
if (pbCaretAtEnd) *pbCaretAtEnd = FALSE;
cursor->nOffset = 0;
do {
int run_x = pNext->member.run.pt.x;
int width = pNext->member.run.nWidth;
if (x >= run_x && x < run_x+width)
{
cursor->nOffset = ME_CharFromPoint(editor, x-run_x, &pNext->member.run, TRUE, TRUE);
cursor->pRun = pNext;
cursor->pPara = ME_GetParagraph( cursor->pRun );
return exact;
}
pLastRun = pNext;
pNext = ME_FindItemFwd(pNext, diRunOrStartRow);
} while(pNext && pNext->type == diRun);
if ((pLastRun->member.run.nFlags & MERF_ENDPARA) == 0)
{
cursor->pRun = ME_FindItemFwd(pNext, diRun);
if (pbCaretAtEnd) *pbCaretAtEnd = TRUE;
}
else
cursor->pRun = pLastRun;
cursor->pPara = ME_GetParagraph( cursor->pRun );
return FALSE;
}
BOOL ME_IsInTable(ME_DisplayItem *pItem)
{
PARAFORMAT2 *pFmt;
if (!pItem)
return FALSE;
if (pItem->type == diRun)
pItem = ME_GetParagraph(pItem);
if (pItem->type != diParagraph)
return FALSE;
pFmt = pItem->member.para.pFmt;
return pFmt->dwMask & PFM_TABLE && pFmt->wEffects & PFE_TABLE;
}
void
ME_GetSelectionParas(ME_TextEditor *editor, ME_DisplayItem **para, ME_DisplayItem **para_end)
{
ME_Cursor *pEndCursor = &editor->pCursors[1];
*para = ME_GetParagraph(editor->pCursors[0].pRun);
*para_end = ME_GetParagraph(editor->pCursors[1].pRun);
if ((*para_end)->member.para.nCharOfs < (*para)->member.para.nCharOfs) {
ME_DisplayItem *tmp = *para;
*para = *para_end;
*para_end = tmp;
pEndCursor = &editor->pCursors[0];
}
/* selection consists of chars from nFrom up to nTo-1 */
if ((*para_end)->member.para.nCharOfs > (*para)->member.para.nCharOfs) {
if (!pEndCursor->nOffset) {
*para_end = ME_GetParagraph(ME_FindItemBack(pEndCursor->pRun, diRun));
}
}
}
int
ME_CharFromPos(ME_TextEditor *editor, int x, int y)
{
ME_Cursor cursor;
RECT rc;
GetClientRect(editor->hWnd, &rc);
if (x < 0 || y < 0 || x >= rc.right || y >= rc.bottom)
return -1;
y += ME_GetYScrollPos(editor);
ME_FindPixelPos(editor, x, y, &cursor, NULL);
return (ME_GetParagraph(cursor.pRun)->member.para.nCharOfs
+ cursor.pRun->member.run.nCharOfs + cursor.nOffset);
}
static void ME_ArrowEnd(ME_TextEditor *editor, ME_Cursor *pCursor)
{
ME_DisplayItem *pRow;
if (editor->bCaretAtEnd && !pCursor->nOffset)
return;
pRow = ME_FindItemFwd(pCursor->pRun, diStartRowOrParagraphOrEnd);
assert(pRow);
if (pRow->type == diStartRow) {
ME_DisplayItem *pRun = ME_FindItemFwd(pRow, diRun);
assert(pRun);
pCursor->pRun = pRun;
assert(pCursor->pPara == ME_GetParagraph(pCursor->pRun));
pCursor->nOffset = 0;
editor->bCaretAtEnd = TRUE;
return;
}
pCursor->pRun = ME_FindItemBack(pRow, diRun);
assert(pCursor->pRun && pCursor->pRun->member.run.nFlags & MERF_ENDPARA);
assert(pCursor->pPara == ME_GetParagraph(pCursor->pRun));
pCursor->nOffset = 0;
editor->bCaretAtEnd = FALSE;
}
static BOOL ME_ReturnFoundPos(ME_TextEditor *editor, ME_DisplayItem *found,
ME_Cursor *result, int rx, BOOL isExact)
{
assert(found);
assert(found->type == diRun);
if ((found->member.run.nFlags & MERF_ENDPARA) || rx < 0)
rx = 0;
result->pRun = found;
result->nOffset = ME_CharFromPointCursor(editor, rx, &found->member.run);
if (result->nOffset == found->member.run.len && rx)
{
result->pRun = ME_FindItemFwd(result->pRun, diRun);
result->nOffset = 0;
}
result->pPara = ME_GetParagraph(result->pRun);
return isExact;
}
/* Returns the character offset closest to the pixel position
*
* x & y are pixel positions in client coordinates.
*
* isExact will be set to TRUE if the run is directly under the pixel
* position, FALSE if it not, unless isExact is set to NULL.
*/
int ME_CharFromPos(ME_TextEditor *editor, int x, int y, BOOL *isExact)
{
ME_Cursor cursor;
RECT rc;
BOOL bResult;
GetClientRect(editor->hWnd, &rc);
if (x < 0 || y < 0 || x >= rc.right || y >= rc.bottom) {
if (isExact) *isExact = FALSE;
return -1;
}
x += editor->horz_si.nPos;
y += editor->vert_si.nPos;
bResult = ME_FindPixelPos(editor, x, y, &cursor, NULL);
if (isExact) *isExact = bResult;
return (ME_GetParagraph(cursor.pRun)->member.para.nCharOfs
+ cursor.pRun->member.run.nCharOfs + cursor.nOffset);
}
static void ME_ArrowHome(ME_TextEditor *editor, ME_Cursor *pCursor)
{
ME_DisplayItem *pRow = ME_FindItemBack(pCursor->pRun, diStartRow);
if (pRow) {
ME_DisplayItem *pRun;
if (editor->bCaretAtEnd && !pCursor->nOffset) {
pRow = ME_FindItemBack(pRow, diStartRow);
if (!pRow)
return;
}
pRun = ME_FindItemFwd(pRow, diRun);
if (pRun) {
pCursor->pRun = pRun;
assert(pCursor->pPara == ME_GetParagraph(pRun));
pCursor->nOffset = 0;
}
}
editor->bCaretAtEnd = FALSE;
}
static void ME_InsertRowStart(ME_WrapContext *wc, const ME_DisplayItem *pEnd)
{
ME_DisplayItem *p, *row, *para;
int ascent = 0, descent = 0, width=0, shift = 0, align = 0;
/* wrap text */
para = ME_GetParagraph(wc->pRowStart);
for (p = wc->pRowStart; p!=pEnd; p = p->next)
{
/* 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 (!(p->member.run.nFlags & (MERF_ENDPARA|MERF_SKIPPED)))
width += p->member.run.nWidth;
}
}
row = ME_MakeRow(ascent+descent, ascent, width);
row->member.row.nYPos = wc->pt.y;
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 = (wc->nAvailWidth-width)/2;
if (align == PFA_RIGHT)
shift = wc->nAvailWidth-width;
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 += ascent+descent;
ME_BeginRow(wc);
}
BOOL ME_InternalDeleteText(ME_TextEditor *editor, int nOfs, int nChars,
BOOL bForce)
{
ME_Cursor c;
int shift = 0;
int totalChars = nChars;
ME_DisplayItem *start_para;
{
/* Prevent deletion past last end of paragraph run. */
ME_DisplayItem *pTextEnd = editor->pBuffer->pLast;
int nMaxChars = pTextEnd->member.para.prev_para->member.para.nCharOfs;
nMaxChars += ME_FindItemBack(pTextEnd, diRun)->member.run.nCharOfs;
nMaxChars -= nOfs;
nChars = min(nChars, nMaxChars);
}
ME_CursorFromCharOfs(editor, nOfs, &c);
start_para = ME_GetParagraph(c.pRun);
if (!bForce)
{
ME_ProtectPartialTableDeletion(editor, nOfs, &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
+ ME_GetParagraph(c.pRun)->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. */
c.pRun = ME_FindItemBack(c.pRun, diRun);
if (c.pRun->member.run.nFlags & MERF_ENDPARA)
c.nOffset = c.pRun->member.run.nCR + c.pRun->member.run.nLF;
else
c.nOffset = c.pRun->member.run.strText->nLen;
}
run = &c.pRun->member.run;
if (run->nFlags & MERF_ENDPARA) {
int eollen = run->nCR + run->nLF;
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, ME_GetParagraph(c.pRun), 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_w(run->strText->szData), run->strText->nLen);
if (!c.nOffset && ME_StrVLen(run->strText) == nCharsToDelete)
{
/* undo = reinsert whole run */
/* nOfs is a character offset (from the start of the document
to the current (deleted) run */
ME_UndoItem *pUndo = ME_AddUndoItem(editor, diUndoInsertRun, c.pRun);
if (pUndo)
pUndo->di.member.run.nCharOfs = nOfs+nChars;
}
else
{
/* undo = reinsert partial run */
ME_UndoItem *pUndo = ME_AddUndoItem(editor, diUndoInsertRun, c.pRun);
if (pUndo) {
ME_DestroyString(pUndo->di.member.run.strText);
pUndo->di.member.run.nCharOfs = nOfs+nChars;
pUndo->di.member.run.strText = ME_MakeStringN(run->strText->szData+c.nOffset, nCharsToDelete);
}
}
TRACE("Post deletion string: %s (%d)\n", debugstr_w(run->strText->szData), run->strText->nLen);
TRACE("Shift value: %d\n", shift);
ME_StrDeleteV(run->strText, c.nOffset, nCharsToDelete);
/* 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 <= ME_StrVLen(run->strText));
}
if (pThisCur->nOffset == ME_StrVLen(run->strText))
{
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 (!ME_StrVLen(cursor.pRun->member.run.strText))
{
TRACE("Removing useless run\n");
ME_Remove(cursor.pRun);
ME_DestroyDisplayItem(cursor.pRun);
}
shift = 0;
/*
ME_CheckCharOffsets(editor);
*/
continue;
}
}
return TRUE;
}
static void ME_PlayUndoItem(ME_TextEditor *editor, ME_DisplayItem *pItem)
{
ME_UndoItem *pUItem = (ME_UndoItem *)pItem;
if (editor->nUndoMode == umIgnore)
return;
TRACE("Playing undo/redo item, id=%s\n", ME_GetDITypeName(pItem->type));
switch(pItem->type)
{
case diUndoPotentialEndTransaction:
case diUndoEndTransaction:
assert(0);
case diUndoSetParagraphFormat:
{
ME_Cursor tmp;
ME_DisplayItem *para;
ME_CursorFromCharOfs(editor, pItem->member.para.nCharOfs, &tmp);
para = ME_FindItemBack(tmp.pRun, diParagraph);
ME_AddUndoItem(editor, diUndoSetParagraphFormat, para);
*para->member.para.pFmt = *pItem->member.para.pFmt;
para->member.para.border = pItem->member.para.border;
break;
}
case diUndoSetCharFormat:
{
ME_SetCharFormat(editor, pUItem->nStart, pUItem->nLen, &pItem->member.ustyle->fmt);
break;
}
case diUndoInsertRun:
{
ME_InsertRun(editor, pItem->member.run.nCharOfs, pItem);
break;
}
case diUndoDeleteRun:
{
ME_InternalDeleteText(editor, pUItem->nStart, pUItem->nLen, TRUE);
break;
}
case diUndoJoinParagraphs:
{
ME_Cursor tmp;
ME_CursorFromCharOfs(editor, pUItem->nStart, &tmp);
/* the only thing that's needed is paragraph offset, so no need to split runs */
ME_JoinParagraphs(editor, ME_GetParagraph(tmp.pRun), TRUE);
break;
}
case diUndoSplitParagraph:
{
ME_Cursor tmp;
ME_DisplayItem *this_para, *new_para;
BOOL bFixRowStart;
int paraFlags = pItem->member.para.nFlags & (MEPF_ROWSTART|MEPF_CELL|MEPF_ROWEND);
ME_CursorFromCharOfs(editor, pUItem->nStart, &tmp);
if (tmp.nOffset)
tmp.pRun = ME_SplitRunSimple(editor, tmp.pRun, tmp.nOffset);
assert(pUItem->nCR >= 0);
assert(pUItem->nLF >= 0);
this_para = ME_GetParagraph(tmp.pRun);
bFixRowStart = this_para->member.para.nFlags & MEPF_ROWSTART;
if (bFixRowStart)
{
/* Re-insert the paragraph before the table, making sure the nFlag value
* is correct. */
this_para->member.para.nFlags &= ~MEPF_ROWSTART;
}
new_para = ME_SplitParagraph(editor, tmp.pRun, tmp.pRun->member.run.style,
pUItem->nCR, pUItem->nLF, paraFlags);
if (bFixRowStart)
new_para->member.para.nFlags |= MEPF_ROWSTART;
assert(pItem->member.para.pFmt->cbSize == sizeof(PARAFORMAT2));
*new_para->member.para.pFmt = *pItem->member.para.pFmt;
new_para->member.para.border = pItem->member.para.border;
if (pItem->member.para.pCell)
{
ME_DisplayItem *pItemCell, *pCell;
pItemCell = pItem->member.para.pCell;
pCell = new_para->member.para.pCell;
pCell->member.cell.nRightBoundary = pItemCell->member.cell.nRightBoundary;
pCell->member.cell.border = pItemCell->member.cell.border;
}
break;
}
default:
assert(0 == "PlayUndoItem, unexpected type");
}
}
static void
ME_MoveCursorLines(ME_TextEditor *editor, ME_Cursor *pCursor, int nRelOfs)
{
ME_DisplayItem *pRun = pCursor->pRun;
ME_DisplayItem *pItem, *pOldPara, *pNewPara;
int x = ME_GetXForArrow(editor, pCursor);
if (editor->bCaretAtEnd && !pCursor->nOffset)
pRun = ME_FindItemBack(pRun, diRun);
if (!pRun)
return;
pOldPara = ME_GetParagraph(pRun);
if (nRelOfs == -1)
{
/* start of this row */
pItem = ME_FindItemBack(pRun, diStartRow);
assert(pItem);
/* start of the previous row */
pItem = ME_FindItemBack(pItem, diStartRow);
if (!pItem)
return; /* row not found - ignore */
pNewPara = ME_GetParagraph(pItem);
if (pOldPara->member.para.nFlags & MEPF_ROWEND ||
(pOldPara->member.para.pCell &&
pOldPara->member.para.pCell != pNewPara->member.para.pCell))
{
/* Brought out of a cell */
pNewPara = ME_GetTableRowStart(pOldPara)->member.para.prev_para;
if (pNewPara->type == diTextStart)
return; /* At the top, so don't go anywhere. */
pItem = ME_FindItemFwd(pNewPara, diStartRow);
}
if (pNewPara->member.para.nFlags & MEPF_ROWEND)
{
/* Brought into a table row */
ME_Cell *cell = &ME_FindItemBack(pNewPara, diCell)->member.cell;
while (x < cell->pt.x && cell->prev_cell)
cell = &cell->prev_cell->member.cell;
if (cell->next_cell) /* else - we are still at the end of the row */
pItem = ME_FindItemBack(cell->next_cell, diStartRow);
}
}
else
{
/* start of the next row */
pItem = ME_FindItemFwd(pRun, diStartRow);
if (!pItem)
return; /* row not found - ignore */
/* FIXME If diParagraph is before diStartRow, wrap the next paragraph?
*/
pNewPara = ME_GetParagraph(pItem);
if (pOldPara->member.para.nFlags & MEPF_ROWSTART ||
(pOldPara->member.para.pCell &&
pOldPara->member.para.pCell != pNewPara->member.para.pCell))
{
/* Brought out of a cell */
pNewPara = ME_GetTableRowEnd(pOldPara)->member.para.next_para;
if (pNewPara->type == diTextEnd)
return; /* At the bottom, so don't go anywhere. */
pItem = ME_FindItemFwd(pNewPara, diStartRow);
}
if (pNewPara->member.para.nFlags & MEPF_ROWSTART)
{
/* Brought into a table row */
ME_DisplayItem *cell = ME_FindItemFwd(pNewPara, diCell);
while (cell->member.cell.next_cell &&
x >= cell->member.cell.next_cell->member.cell.pt.x)
cell = cell->member.cell.next_cell;
pItem = ME_FindItemFwd(cell, diStartRow);
}
}
if (!pItem)
{
/* row not found - ignore */
return;
}
pCursor->pRun = ME_FindRunInRow(editor, pItem, x, &pCursor->nOffset, &editor->bCaretAtEnd);
assert(pCursor->pRun);
assert(pCursor->pRun->type == diRun);
}
void
ME_GetCursorCoordinates(ME_TextEditor *editor, ME_Cursor *pCursor,
int *x, int *y, int *height)
{
ME_DisplayItem *pCursorRun = pCursor->pRun;
ME_DisplayItem *pSizeRun = pCursor->pRun;
assert(height && x && y);
assert(!(ME_GetParagraph(pCursorRun)->member.para.nFlags & MEPF_REWRAP));
assert(pCursor->pRun);
assert(pCursor->pRun->type == diRun);
if (pCursorRun->type == diRun) {
ME_DisplayItem *row = ME_FindItemBack(pCursorRun, diStartRowOrParagraph);
if (row) {
HDC hDC = GetDC(editor->hWnd);
ME_Context c;
ME_DisplayItem *run = pCursorRun;
ME_DisplayItem *para = NULL;
SIZE sz = {0, 0};
ME_InitContext(&c, editor, hDC);
if (!pCursor->nOffset)
{
ME_DisplayItem *prev = ME_FindItemBack(pCursorRun, diRunOrParagraph);
assert(prev);
if (prev->type == diRun)
pSizeRun = prev;
}
assert(row->type == diStartRow); /* paragraph -> run without start row ?*/
para = ME_FindItemBack(row, diParagraph);
assert(para);
assert(para->type == diParagraph);
if (editor->bCaretAtEnd && !pCursor->nOffset &&
run == ME_FindItemFwd(row, diRun))
{
ME_DisplayItem *tmp = ME_FindItemBack(row, diRunOrParagraph);
assert(tmp);
if (tmp->type == diRun)
{
row = ME_FindItemBack(tmp, diStartRow);
pSizeRun = run = tmp;
assert(run);
assert(run->type == diRun);
sz = ME_GetRunSize(&c, ¶->member.para,
&run->member.run, ME_StrLen(run->member.run.strText),
row->member.row.nLMargin);
}
}
if (pCursor->nOffset) {
sz = ME_GetRunSize(&c, ¶->member.para, &run->member.run, pCursor->nOffset,
row->member.row.nLMargin);
}
*height = pSizeRun->member.run.nAscent + pSizeRun->member.run.nDescent;
*x = c.rcView.left + run->member.run.pt.x + sz.cx - editor->horz_si.nPos;
*y = c.rcView.top + para->member.para.pt.y + row->member.row.nBaseline
+ run->member.run.pt.y - pSizeRun->member.run.nAscent - editor->vert_si.nPos;
ME_DestroyContext(&c, editor->hWnd);
return;
}
}
*height = 10; /* FIXME use global font */
*x = 0;
*y = 0;
}
/* Table rows should either be deleted completely or not at all. */
void ME_ProtectPartialTableDeletion(ME_TextEditor *editor, int nOfs,int *nChars)
{
ME_Cursor c, c2;
ME_DisplayItem *this_para, *end_para;
ME_CursorFromCharOfs(editor, nOfs, &c);
this_para = ME_GetParagraph(c.pRun);
ME_CursorFromCharOfs(editor, nOfs + *nChars, &c2);
end_para = ME_GetParagraph(c2.pRun);
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.nCR + c2.pRun->member.run.nLF);
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->nCR - end_run->nLF);
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. */
pRun = NULL;
if (nOfs > this_para->member.para.nCharOfs)
pRun = ME_FindItemBack(end_para, diRun);
if (!pRun)
pRun = ME_FindItemFwd(end_para, diRun);
if (pRun)
{
nCharsToBoundary = ME_GetParagraph(pRun)->member.para.nCharOfs
+ pRun->member.run.nCharOfs
- nOfs;
if (nCharsToBoundary >= 0)
*nChars = min(*nChars, nCharsToBoundary);
}
}
if (*nChars < 0)
nChars = 0;
}
}
/* split paragraph at the beginning of the run */
ME_DisplayItem *ME_SplitParagraph(ME_TextEditor *editor, ME_DisplayItem *run,
ME_Style *style, const WCHAR *eol_str, int eol_len,
int paraFlags)
{
ME_DisplayItem *next_para = NULL;
ME_DisplayItem *run_para = NULL;
ME_DisplayItem *new_para = make_para(editor);
ME_DisplayItem *end_run;
int ofs, i;
ME_DisplayItem *pp;
int run_flags = MERF_ENDPARA;
if (!editor->bEmulateVersion10) { /* v4.1 */
/* At most 1 of MEPF_CELL, MEPF_ROWSTART, or MEPF_ROWEND should be set. */
assert(!(paraFlags & ~(MEPF_CELL|MEPF_ROWSTART|MEPF_ROWEND)));
assert(!(paraFlags & (paraFlags-1)));
if (paraFlags == MEPF_CELL)
run_flags |= MERF_ENDCELL;
else if (paraFlags == MEPF_ROWSTART)
run_flags |= MERF_TABLESTART|MERF_HIDDEN;
} else { /* v1.0 - v3.0 */
assert(!(paraFlags & (MEPF_CELL|MEPF_ROWSTART|MEPF_ROWEND)));
}
assert(run->type == diRun);
run_para = ME_GetParagraph(run);
assert(run_para->member.para.pFmt->cbSize == sizeof(PARAFORMAT2));
new_para->member.para.text = ME_VSplitString( run_para->member.para.text, run->member.run.nCharOfs );
end_run = ME_MakeRun(style, run_flags);
ofs = end_run->member.run.nCharOfs = run->member.run.nCharOfs;
end_run->member.run.len = eol_len;
end_run->member.run.para = run->member.run.para;
ME_AppendString( run_para->member.para.text, eol_str, eol_len );
next_para = run_para->member.para.next_para;
assert(next_para == ME_FindItemFwd(run_para, diParagraphOrEnd));
add_undo_join_paras( editor, run_para->member.para.nCharOfs + ofs );
/* Update selection cursors to point to the correct paragraph. */
for (i = 0; i < editor->nCursors; i++) {
if (editor->pCursors[i].pPara == run_para &&
run->member.run.nCharOfs <= editor->pCursors[i].pRun->member.run.nCharOfs)
{
editor->pCursors[i].pPara = new_para;
}
}
/* the new paragraph will have a different starting offset, so let's update its runs */
pp = run;
while(pp->type == diRun) {
pp->member.run.nCharOfs -= ofs;
pp->member.run.para = &new_para->member.para;
pp = ME_FindItemFwd(pp, diRunOrParagraphOrEnd);
}
new_para->member.para.nCharOfs = run_para->member.para.nCharOfs + ofs;
new_para->member.para.nCharOfs += eol_len;
new_para->member.para.nFlags = MEPF_REWRAP;
/* FIXME initialize format style and call ME_SetParaFormat blah blah */
*new_para->member.para.pFmt = *run_para->member.para.pFmt;
new_para->member.para.border = run_para->member.para.border;
/* insert paragraph into paragraph double linked list */
new_para->member.para.prev_para = run_para;
new_para->member.para.next_para = next_para;
run_para->member.para.next_para = new_para;
next_para->member.para.prev_para = new_para;
/* insert end run of the old paragraph, and new paragraph, into DI double linked list */
ME_InsertBefore(run, new_para);
ME_InsertBefore(new_para, end_run);
if (!editor->bEmulateVersion10) { /* v4.1 */
if (paraFlags & (MEPF_ROWSTART|MEPF_CELL))
{
ME_DisplayItem *cell = ME_MakeDI(diCell);
ME_InsertBefore(new_para, cell);
new_para->member.para.pCell = cell;
cell->member.cell.next_cell = NULL;
if (paraFlags & MEPF_ROWSTART)
{
run_para->member.para.nFlags |= MEPF_ROWSTART;
cell->member.cell.prev_cell = NULL;
cell->member.cell.parent_cell = run_para->member.para.pCell;
if (run_para->member.para.pCell)
cell->member.cell.nNestingLevel = run_para->member.para.pCell->member.cell.nNestingLevel + 1;
else
cell->member.cell.nNestingLevel = 1;
} else {
cell->member.cell.prev_cell = run_para->member.para.pCell;
assert(cell->member.cell.prev_cell);
cell->member.cell.prev_cell->member.cell.next_cell = cell;
assert(run_para->member.para.nFlags & MEPF_CELL);
assert(!(run_para->member.para.nFlags & MEPF_ROWSTART));
cell->member.cell.nNestingLevel = cell->member.cell.prev_cell->member.cell.nNestingLevel;
cell->member.cell.parent_cell = cell->member.cell.prev_cell->member.cell.parent_cell;
}
} else if (paraFlags & MEPF_ROWEND) {
run_para->member.para.nFlags |= MEPF_ROWEND;
run_para->member.para.pCell = run_para->member.para.pCell->member.cell.parent_cell;
new_para->member.para.pCell = run_para->member.para.pCell;
assert(run_para->member.para.prev_para->member.para.nFlags & MEPF_CELL);
assert(!(run_para->member.para.prev_para->member.para.nFlags & MEPF_ROWSTART));
if (new_para->member.para.pCell != new_para->member.para.next_para->member.para.pCell
&& new_para->member.para.next_para->member.para.pCell
&& !new_para->member.para.next_para->member.para.pCell->member.cell.prev_cell)
{
/* Row starts just after the row that was ended. */
new_para->member.para.nFlags |= MEPF_ROWSTART;
}
} else {
new_para->member.para.pCell = run_para->member.para.pCell;
}
ME_UpdateTableFlags(run_para);
ME_UpdateTableFlags(new_para);
}
/* force rewrap of the */
run_para->member.para.prev_para->member.para.nFlags |= MEPF_REWRAP;
new_para->member.para.prev_para->member.para.nFlags |= MEPF_REWRAP;
/* we've added the end run, so we need to modify nCharOfs in the next paragraphs */
ME_PropagateCharOffset(next_para, eol_len);
editor->nParagraphs++;
return new_para;
}
/* Selects the next table cell or appends a new table row if at end of table */
static void ME_SelectOrInsertNextCell(ME_TextEditor *editor,
ME_DisplayItem *run)
{
ME_DisplayItem *para = ME_GetParagraph(run);
int i;
assert(run && run->type == diRun);
assert(ME_IsInTable(run));
if (!editor->bEmulateVersion10) { /* v4.1 */
ME_DisplayItem *cell;
/* Get the initial cell */
if (para->member.para.nFlags & MEPF_ROWSTART) {
cell = para->member.para.next_para->member.para.pCell;
} else if (para->member.para.nFlags & MEPF_ROWEND) {
cell = para->member.para.prev_para->member.para.pCell;
} else {
cell = para->member.para.pCell;
}
assert(cell);
/* Get the next cell. */
if (cell->member.cell.next_cell &&
cell->member.cell.next_cell->member.cell.next_cell)
{
cell = cell->member.cell.next_cell;
} else {
para = ME_GetTableRowEnd(ME_FindItemFwd(cell, diParagraph));
para = para->member.para.next_para;
assert(para);
if (para->member.para.nFlags & MEPF_ROWSTART) {
cell = para->member.para.next_para->member.para.pCell;
} else {
/* Insert row */
para = para->member.para.prev_para;
para = ME_AppendTableRow(editor, ME_GetTableRowStart(para));
/* Put cursor at the start of the new table row */
para = para->member.para.next_para;
editor->pCursors[0].pRun = ME_FindItemFwd(para, diRun);
editor->pCursors[0].nOffset = 0;
editor->pCursors[1] = editor->pCursors[0];
ME_WrapMarkedParagraphs(editor);
return;
}
}
/* Select cell */
editor->pCursors[1].pRun = ME_FindItemFwd(cell, diRun);
editor->pCursors[1].nOffset = 0;
assert(editor->pCursors[0].pRun);
cell = cell->member.cell.next_cell;
editor->pCursors[0].pRun = ME_FindItemBack(cell, diRun);
editor->pCursors[0].nOffset = 0;
assert(editor->pCursors[1].pRun);
} else { /* v1.0 - 3.0 */
if (run->member.run.nFlags & MERF_ENDPARA &&
ME_IsInTable(ME_FindItemFwd(run, diParagraphOrEnd)))
{
run = ME_FindItemFwd(run, diRun);
assert(run);
}
for (i = 0; i < 2; i++)
{
while (!(run->member.run.nFlags & MERF_TAB))
{
run = ME_FindItemFwd(run, diRunOrParagraphOrEnd);
if (run->type != diRun)
{
para = run;
if (ME_IsInTable(para))
{
run = ME_FindItemFwd(para, diRun);
assert(run);
editor->pCursors[0].pRun = run;
editor->pCursors[0].nOffset = 0;
i = 1;
} else {
/* Insert table row */
para = ME_AppendTableRow(editor, para->member.para.prev_para);
/* Put cursor at the start of the new table row */
editor->pCursors[0].pRun = ME_FindItemFwd(para, diRun);
editor->pCursors[0].nOffset = 0;
editor->pCursors[1] = editor->pCursors[0];
ME_WrapMarkedParagraphs(editor);
return;
}
}
}
if (i == 0)
run = ME_FindItemFwd(run, diRun);
editor->pCursors[i].pRun = run;
editor->pCursors[i].nOffset = 0;
}
}
}
/* Finds the run and offset from the pixel position.
*
* x & y are pixel positions in virtual coordinates into the rich edit control,
* so client coordinates must first be adjusted by the scroll position.
*
* returns TRUE if the result was exactly under the cursor, otherwise returns
* FALSE, and result is set to the closest position to the coordinates.
*/
static BOOL ME_FindPixelPos(ME_TextEditor *editor, int x, int y,
ME_Cursor *result, BOOL *is_eol)
{
ME_DisplayItem *p = editor->pBuffer->pFirst->member.para.next_para;
ME_DisplayItem *last = NULL;
int rx = 0;
BOOL isExact = TRUE;
x -= editor->rcFormat.left;
y -= editor->rcFormat.top;
if (is_eol)
*is_eol = 0;
/* find paragraph */
for (; p != editor->pBuffer->pLast; p = p->member.para.next_para)
{
assert(p->type == diParagraph);
if (y < p->member.para.pt.y + p->member.para.nHeight)
{
if (p->member.para.nFlags & MEPF_ROWSTART)
p = ME_FindPixelPosInTableRow(x, y, p);
y -= p->member.para.pt.y;
p = ME_FindItemFwd(p, diStartRow);
break;
} else if (p->member.para.nFlags & MEPF_ROWSTART) {
p = ME_GetTableRowEnd(p);
}
}
/* find row */
for (; p != editor->pBuffer->pLast; )
{
ME_DisplayItem *pp;
assert(p->type == diStartRow);
if (y < p->member.row.pt.y + p->member.row.nHeight)
{
p = ME_FindItemFwd(p, diRun);
break;
}
pp = ME_FindItemFwd(p, diStartRowOrParagraphOrEnd);
if (pp->type != diStartRow)
{
p = ME_FindItemFwd(p, diRun);
break;
}
p = pp;
}
if (p == editor->pBuffer->pLast)
{
/* The position is below the last paragraph, so the last row will be used
* rather than the end of the text, so the x position will be used to
* determine the offset closest to the pixel position. */
isExact = FALSE;
p = ME_FindItemBack(p, diStartRow);
if (p != NULL){
p = ME_FindItemFwd(p, diRun);
}
else
{
p = editor->pBuffer->pLast;
}
}
for (; p != editor->pBuffer->pLast; p = p->next)
{
switch (p->type)
{
case diRun:
rx = x - p->member.run.pt.x;
if (rx < p->member.run.nWidth)
return ME_ReturnFoundPos(editor, p, result, rx, isExact);
break;
case diStartRow:
isExact = FALSE;
p = ME_FindItemFwd(p, diRun);
if (is_eol) *is_eol = 1;
rx = 0; /* FIXME not sure */
return ME_ReturnFoundPos(editor, p, result, rx, isExact);
case diCell:
case diParagraph:
case diTextEnd:
isExact = FALSE;
rx = 0; /* FIXME not sure */
p = last;
return ME_ReturnFoundPos(editor, p, result, rx, isExact);
default: assert(0);
}
last = p;
}
result->pRun = ME_FindItemBack(p, diRun);
result->pPara = ME_GetParagraph(result->pRun);
result->nOffset = 0;
assert(result->pRun->member.run.nFlags & MERF_ENDPARA);
return FALSE;
}
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 */
{
if (run->nFlags & (MERF_WHITESPACE|MERF_TAB)) {
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;
}
/* we're not at the end of the row */
if (run->nFlags & MERF_TAB) {
/* force recomputation of tabs' size as it depends on position */
ME_CalcRunExtent(wc->context, &ME_GetParagraph(p)->member.para,
wc->nRow ? wc->nLeftMargin : wc->nFirstMargin, run);
}
/* will current run fit? */
if (wc->pt.x + run->nWidth > wc->nAvailWidth)
{
int loc = 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;
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)
{
/* we had only spaces so far, entire content can be omitted */
wc->pt.x = 0;
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;
}
void ME_InternalDeleteText(ME_TextEditor *editor, int nOfs,
int nChars)
{
ME_Cursor c;
int shift = 0;
while(nChars > 0)
{
ME_Run *run;
ME_CursorFromCharOfs(editor, nOfs, &c);
run = &c.pRun->member.run;
if (run->nFlags & MERF_ENDPARA) {
int eollen = run->nCR + run->nLF;
if (!ME_FindItemFwd(c.pRun, diParagraph))
{
return;
}
ME_JoinParagraphs(editor, ME_GetParagraph(c.pRun));
/* ME_SkipAndPropagateCharOffset(p->pRun, shift); */
ME_CheckCharOffsets(editor);
nChars -= (eollen < nChars) ? eollen : nChars;
continue;
}
else
{
ME_Cursor cursor;
int nIntendedChars = nChars;
int nCharsToDelete = nChars;
int i;
int loc = c.nOffset;
ME_FindItemBack(c.pRun, diParagraph)->member.para.nFlags |= MEPF_REWRAP;
cursor = c;
ME_StrRelPos(run->strText, loc, &nChars);
/* nChars is the number of characters that should be deleted from the
FOLLOWING runs (these AFTER cursor.pRun)
nCharsToDelete is a number of chars to delete from THIS run */
nCharsToDelete -= nChars;
shift -= nCharsToDelete;
TRACE("Deleting %d (intended %d-remaning %d) chars at %d in '%s' (%d)\n",
nCharsToDelete, nIntendedChars, nChars, c.nOffset,
debugstr_w(run->strText->szData), run->strText->nLen);
if (!c.nOffset && ME_StrVLen(run->strText) == nCharsToDelete)
{
/* undo = reinsert whole run */
/* nOfs is a character offset (from the start of the document
to the current (deleted) run */
ME_UndoItem *pUndo = ME_AddUndoItem(editor, diUndoInsertRun, c.pRun);
if (pUndo)
pUndo->di.member.run.nCharOfs = nOfs;
}
else
{
/* undo = reinsert partial run */
ME_UndoItem *pUndo = ME_AddUndoItem(editor, diUndoInsertRun, c.pRun);
if (pUndo) {
ME_DestroyString(pUndo->di.member.run.strText);
pUndo->di.member.run.nCharOfs = nOfs;
pUndo->di.member.run.strText = ME_MakeStringN(run->strText->szData+c.nOffset, nCharsToDelete);
}
}
TRACE("Post deletion string: %s (%d)\n", debugstr_w(run->strText->szData), run->strText->nLen);
TRACE("Shift value: %d\n", shift);
ME_StrDeleteV(run->strText, c.nOffset, nCharsToDelete);
/* 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 <= ME_StrVLen(run->strText));
}
if (pThisCur->nOffset == ME_StrVLen(run->strText))
{
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 (!ME_StrVLen(cursor.pRun->member.run.strText))
{
TRACE("Removing useless run\n");
ME_Remove(cursor.pRun);
ME_DestroyDisplayItem(cursor.pRun);
}
shift = 0;
/*
ME_CheckCharOffsets(editor);
*/
continue;
}
}
}
static void ME_PlayUndoItem(ME_TextEditor *editor, ME_DisplayItem *pItem)
{
ME_UndoItem *pUItem = (ME_UndoItem *)pItem;
if (editor->nUndoMode == umIgnore)
return;
TRACE("Playing undo/redo item, id=%s\n", ME_GetDITypeName(pItem->type));
switch(pItem->type)
{
case diUndoEndTransaction:
assert(0);
case diUndoSetParagraphFormat:
{
ME_Cursor tmp;
ME_CursorFromCharOfs(editor, pItem->member.para.nCharOfs, &tmp);
ME_SetParaFormat(editor, ME_FindItemBack(tmp.pRun, diParagraph), pItem->member.para.pFmt);
break;
}
case diUndoSetCharFormat:
{
ME_SetCharFormat(editor, pUItem->nStart, pUItem->nLen, &pItem->member.ustyle->fmt);
break;
}
case diUndoSetDefaultCharFormat:
{
ME_SetDefaultCharFormat(editor, &pItem->member.ustyle->fmt);
break;
}
case diUndoInsertRun:
{
ME_InsertRun(editor, pItem->member.run.nCharOfs, pItem);
break;
}
case diUndoDeleteRun:
{
ME_InternalDeleteText(editor, pUItem->nStart, pUItem->nLen);
break;
}
case diUndoJoinParagraphs:
{
ME_Cursor tmp;
ME_CursorFromCharOfs(editor, pUItem->nStart, &tmp);
/* the only thing that's needed is paragraph offset, so no need to split runs */
ME_JoinParagraphs(editor, ME_GetParagraph(tmp.pRun));
break;
}
case diUndoSplitParagraph:
{
ME_Cursor tmp;
ME_DisplayItem *new_para;
ME_CursorFromCharOfs(editor, pUItem->nStart, &tmp);
if (tmp.nOffset)
tmp.pRun = ME_SplitRunSimple(editor, tmp.pRun, tmp.nOffset);
assert(pUItem->nCR >= 0);
assert(pUItem->nLF >= 0);
new_para = ME_SplitParagraph(editor, tmp.pRun, tmp.pRun->member.run.style,
pUItem->nCR, pUItem->nLF);
assert(pItem->member.para.pFmt->cbSize == sizeof(PARAFORMAT2));
*new_para->member.para.pFmt = *pItem->member.para.pFmt;
break;
}
default:
assert(0 == "PlayUndoItem, unexpected type");
}
}