/******************************************************************************
* ME_GetRunSizeCommon
*
* Finds width, height, ascent and descent of a run, up to given character
* (nLen).
*/
SIZE ME_GetRunSizeCommon(ME_Context *c, const ME_Paragraph *para, ME_Run *run, int nLen,
int startx, int *pAscent, int *pDescent)
{
SIZE size;
WCHAR spaceW[] = {' ',0};
nLen = min( nLen, run->len );
if (run->nFlags & MERF_ENDPARA)
{
nLen = min( nLen, 1 );
ME_GetTextExtent(c, spaceW, nLen, run->style, &size);
}
else if (para->nFlags & MEPF_COMPLEX)
{
size.cx = run->nWidth;
}
else if (c->editor->cPasswordMask)
{
ME_String *szMasked = ME_MakeStringR(c->editor->cPasswordMask,nLen);
ME_GetTextExtent(c, szMasked->szData, nLen,run->style, &size);
ME_DestroyString(szMasked);
}
else
{
ME_GetTextExtent(c, get_text( run, 0 ), nLen, run->style, &size);
}
*pAscent = run->style->tm.tmAscent;
*pDescent = run->style->tm.tmDescent;
size.cy = *pAscent + *pDescent;
if (run->nFlags & MERF_TAB)
{
int pos = 0, i = 0, ppos, shift = 0;
const PARAFORMAT2 *pFmt = ¶->fmt;
if (c->editor->bEmulateVersion10 && /* v1.0 - 3.0 */
pFmt->dwMask & PFM_TABLE && pFmt->wEffects & PFE_TABLE)
/* The horizontal gap shifts the tab positions to leave the gap. */
shift = pFmt->dxOffset * 2;
do {
if (i < pFmt->cTabCount)
{
/* Only one side of the horizontal gap is needed at the end of
* the table row. */
if (i == pFmt->cTabCount -1)
shift = shift >> 1;
pos = shift + (pFmt->rgxTabs[i]&0x00FFFFFF);
i++;
}
else
{
pos += lDefaultTab - (pos % lDefaultTab);
}
ppos = ME_twips2pointsX(c, pos);
if (ppos > startx + run->pt.x) {
size.cx = ppos - startx - run->pt.x;
break;
}
} while(1);
/******************************************************************************
* ME_CharFromPointContext
*
* Returns a character position inside the run given a run-relative
* pixel horizontal position.
*
* If closest is FALSE return the actual character
* If closest is TRUE will round to the closest leading edge.
* ie. if the second character is at pixel position 8 and third at 16 then for:
* closest = FALSE cx = 0..7 return 0, cx = 8..15 return 1
* closest = TRUE cx = 0..3 return 0, cx = 4..11 return 1.
*/
int ME_CharFromPointContext(ME_Context *c, int cx, ME_Run *run, BOOL closest, BOOL visual_order)
{
ME_String *mask_text = NULL;
WCHAR *str;
int fit = 0;
HGDIOBJ hOldFont;
SIZE sz, sz2, sz3;
if (!run->len || cx <= 0)
return 0;
if (run->nFlags & (MERF_TAB | MERF_ENDCELL))
{
if (!closest || cx < run->nWidth / 2) return 0;
return 1;
}
if (run->nFlags & MERF_GRAPHICS)
{
SIZE sz;
ME_GetOLEObjectSize(c, run, &sz);
if (!closest || cx < sz.cx / 2) return 0;
return 1;
}
if (run->para->nFlags & MEPF_COMPLEX)
{
int cp, trailing;
if (visual_order && run->script_analysis.fRTL) cx = run->nWidth - cx - 1;
ScriptXtoCP( cx, run->len, run->num_glyphs, run->clusters, run->vis_attrs, run->advances, &run->script_analysis,
&cp, &trailing );
TRACE("x %d cp %d trailing %d (run width %d) rtl %d log order %d\n", cx, cp, trailing, run->nWidth,
run->script_analysis.fRTL, run->script_analysis.fLogicalOrder);
return closest ? cp + trailing : cp;
}
if (c->editor->cPasswordMask)
{
mask_text = ME_MakeStringR( c->editor->cPasswordMask, run->len );
str = mask_text->szData;
}
else
str = get_text( run, 0 );
hOldFont = ME_SelectStyleFont(c, run->style);
GetTextExtentExPointW(c->hDC, str, run->len,
cx, &fit, NULL, &sz);
if (closest && fit != run->len)
{
GetTextExtentPoint32W(c->hDC, str, fit, &sz2);
GetTextExtentPoint32W(c->hDC, str, fit + 1, &sz3);
if (cx >= (sz2.cx+sz3.cx)/2)
fit = fit + 1;
}
ME_DestroyString( mask_text );
ME_UnselectStyleFont(c, run->style, hOldFont);
return fit;
}
/******************************************************************************
* ME_PointFromCharContext
*
* Returns a run-relative pixel position given a run-relative character
* position (character offset)
*/
int ME_PointFromCharContext(ME_Context *c, ME_Run *pRun, int nOffset, BOOL visual_order)
{
SIZE size;
ME_String *mask_text = NULL;
WCHAR *str;
if (pRun->nFlags & MERF_GRAPHICS)
{
if (nOffset)
ME_GetOLEObjectSize(c, pRun, &size);
return nOffset != 0;
} else if (pRun->nFlags & MERF_ENDPARA) {
nOffset = 0;
}
if (pRun->para->nFlags & MEPF_COMPLEX)
{
int x;
ScriptCPtoX( nOffset, FALSE, pRun->len, pRun->num_glyphs, pRun->clusters,
pRun->vis_attrs, pRun->advances, &pRun->script_analysis, &x );
if (visual_order && pRun->script_analysis.fRTL) x = pRun->nWidth - x - 1;
return x;
}
if (c->editor->cPasswordMask)
{
mask_text = ME_MakeStringR(c->editor->cPasswordMask, pRun->len);
str = mask_text->szData;
}
else
str = get_text( pRun, 0 );
ME_GetTextExtent(c, str, nOffset, pRun->style, &size);
ME_DestroyString( mask_text );
return size.cx;
}
/******************************************************************************
* ME_PointFromCharContext
*
* Returns a run-relative pixel position given a run-relative character
* position (character offset)
*/
int ME_PointFromCharContext(ME_Context *c, ME_Run *pRun, int nOffset, BOOL visual_order)
{
SIZE size;
ME_String *mask_text = NULL;
WCHAR *str;
if (pRun->nFlags & MERF_GRAPHICS)
{
if (nOffset)
ME_GetOLEObjectSize(c, pRun, &size);
return nOffset != 0;
} else if (pRun->nFlags & MERF_ENDPARA) {
nOffset = 0;
}
if (c->editor->cPasswordMask)
{
mask_text = ME_MakeStringR(c->editor->cPasswordMask, pRun->len);
str = mask_text->szData;
}
else
str = get_text( pRun, 0 );
ME_GetTextExtent(c, str, nOffset, pRun->style, &size);
ME_DestroyString( mask_text );
return size.cx;
}
/******************************************************************************
* ME_GetRunSizeCommon
*
* Finds width, height, ascent and descent of a run, up to given character
* (nLen).
*/
SIZE ME_GetRunSizeCommon(ME_Context *c, const ME_Paragraph *para, ME_Run *run, int nLen,
int startx, int *pAscent, int *pDescent)
{
SIZE size;
int nMaxLen = run->len;
if (nLen>nMaxLen)
nLen = nMaxLen;
/* FIXME the following call also ensures that TEXTMETRIC structure is filled
* this is wasteful for MERF_NONTEXT runs, but that shouldn't matter
* in practice
*/
if (c->editor->cPasswordMask)
{
ME_String *szMasked = ME_MakeStringR(c->editor->cPasswordMask,nLen);
ME_GetTextExtent(c, szMasked->szData, nLen,run->style, &size);
ME_DestroyString(szMasked);
}
else
{
ME_GetTextExtent(c, get_text( run, 0 ), nLen, run->style, &size);
}
*pAscent = run->style->tm.tmAscent;
*pDescent = run->style->tm.tmDescent;
size.cy = *pAscent + *pDescent;
if (run->nFlags & MERF_TAB)
{
int pos = 0, i = 0, ppos, shift = 0;
PARAFORMAT2 *pFmt = para->pFmt;
if (c->editor->bEmulateVersion10 && /* v1.0 - 3.0 */
pFmt->dwMask & PFM_TABLE && pFmt->wEffects & PFE_TABLE)
/* The horizontal gap shifts the tab positions to leave the gap. */
shift = pFmt->dxOffset * 2;
do {
if (i < pFmt->cTabCount)
{
/* Only one side of the horizontal gap is needed at the end of
* the table row. */
if (i == pFmt->cTabCount -1)
shift = shift >> 1;
pos = shift + (pFmt->rgxTabs[i]&0x00FFFFFF);
i++;
}
else
{
pos += lDefaultTab - (pos % lDefaultTab);
}
ppos = ME_twips2pointsX(c, pos);
if (ppos > startx + run->pt.x) {
size.cx = ppos - startx - run->pt.x;
break;
}
} while(1);
void para_num_clear( struct para_num *pn )
{
if (pn->style)
{
ME_ReleaseStyle( pn->style );
pn->style = NULL;
}
ME_DestroyString( pn->text );
pn->text = NULL;
}
/******************************************************************************
* ME_CharFromPointContext
*
* Returns a character position inside the run given a run-relative
* pixel horizontal position.
*
* If closest is FALSE return the actual character
* If closest is TRUE will round to the closest leading edge.
* ie. if the second character is at pixel position 8 and third at 16 then for:
* closest = FALSE cx = 0..7 return 0, cx = 8..15 return 1
* closest = TRUE cx = 0..3 return 0, cx = 4..11 return 1.
*/
int ME_CharFromPointContext(ME_Context *c, int cx, ME_Run *run, BOOL closest, BOOL visual_order)
{
ME_String *mask_text = NULL;
WCHAR *str;
int fit = 0;
HGDIOBJ hOldFont;
SIZE sz, sz2, sz3;
if (!run->len || cx <= 0)
return 0;
if (run->nFlags & (MERF_TAB | MERF_ENDCELL))
{
if (!closest || cx < run->nWidth / 2) return 0;
return 1;
}
if (run->nFlags & MERF_GRAPHICS)
{
SIZE sz;
ME_GetOLEObjectSize(c, run, &sz);
if (!closest || cx < sz.cx / 2) return 0;
return 1;
}
if (c->editor->cPasswordMask)
{
mask_text = ME_MakeStringR( c->editor->cPasswordMask, run->len );
str = mask_text->szData;
}
else
str = get_text( run, 0 );
hOldFont = ME_SelectStyleFont(c, run->style);
GetTextExtentExPointW(c->hDC, str, run->len,
cx, &fit, NULL, &sz);
if (closest && fit != run->len)
{
GetTextExtentPoint32W(c->hDC, str, fit, &sz2);
GetTextExtentPoint32W(c->hDC, str, fit + 1, &sz3);
if (cx >= (sz2.cx+sz3.cx)/2)
fit = fit + 1;
}
ME_DestroyString( mask_text );
ME_UnselectStyleFont(c, run->style, hOldFont);
return fit;
}
void ME_DestroyDisplayItem(ME_DisplayItem *item)
{
/* TRACE("type=%s\n", ME_GetDITypeName(item->type)); */
if (item->type==diParagraph)
{
FREE_OBJ(item->member.para.pFmt);
ME_DestroyString(item->member.para.text);
}
if (item->type==diRun)
{
if (item->member.run.ole_obj) ME_DeleteReObject(item->member.run.ole_obj);
ME_ReleaseStyle(item->member.run.style);
}
FREE_OBJ(item);
}
static void destroy_undo_item( struct undo_item *undo )
{
switch( undo->type )
{
case undo_insert_run:
heap_free( undo->u.insert_run.str );
ME_ReleaseStyle( undo->u.insert_run.style );
break;
case undo_split_para:
ME_DestroyString( undo->u.split_para.eol_str );
break;
default:
break;
}
heap_free( undo );
}
static void ME_DrawRun(ME_Context *c, int x, int y, ME_DisplayItem *rundi, ME_Paragraph *para)
{
ME_Run *run = &rundi->member.run;
ME_DisplayItem *start = ME_FindItemBack(rundi, diStartRow);
int runofs = run->nCharOfs+para->nCharOfs;
int nSelFrom, nSelTo;
const WCHAR wszSpace[] = {' ', 0};
if (run->nFlags & MERF_HIDDEN)
return;
ME_GetSelection(c->editor, &nSelFrom, &nSelTo);
/* Draw selected end-of-paragraph mark */
if (run->nFlags & MERF_ENDPARA && runofs >= nSelFrom && runofs < nSelTo)
ME_DrawTextWithStyle(c, x, y, wszSpace, 1, run->style, NULL, 0, 1,
c->pt.y + start->member.row.nYPos,
start->member.row.nHeight);
/* you can always comment it out if you need visible paragraph marks */
if (run->nFlags & (MERF_ENDPARA | MERF_TAB | MERF_CELL))
return;
if (run->nFlags & MERF_GRAPHICS)
ME_DrawGraphics(c, x, y, run, para, (runofs >= nSelFrom) && (runofs < nSelTo));
else
{
if (c->editor->cPasswordMask)
{
ME_String *szMasked = ME_MakeStringR(c->editor->cPasswordMask,ME_StrVLen(run->strText));
ME_DrawTextWithStyle(c, x, y,
szMasked->szData, ME_StrVLen(szMasked), run->style, NULL,
nSelFrom-runofs,nSelTo-runofs, c->pt.y+start->member.row.nYPos, start->member.row.nHeight);
ME_DestroyString(szMasked);
}
else
ME_DrawTextWithStyle(c, x, y,
run->strText->szData, ME_StrVLen(run->strText), run->style, NULL,
nSelFrom-runofs,nSelTo-runofs, c->pt.y+start->member.row.nYPos, start->member.row.nHeight);
}
}
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;
}
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;
}
}
}
