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_SendSelChange(ME_TextEditor *editor)
{
SELCHANGE sc;
if (!(editor->nEventMask & ENM_SELCHANGE))
return;
sc.nmhdr.code = EN_SELCHANGE;
ME_GetSelection(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) /* wth 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;
SendMessageW(GetParent(editor->hWnd), WM_NOTIFY, sc.nmhdr.idFrom, (LPARAM)&sc);
}
}
void ME_LButtonDown(ME_TextEditor *editor, int x, int y)
{
ME_Cursor tmp_cursor;
int is_selection = 0;
editor->nUDArrowX = -1;
y += ME_GetYScrollPos(editor);
tmp_cursor = editor->pCursors[0];
is_selection = ME_IsSelection(editor);
ME_FindPixelPos(editor, x, y, &editor->pCursors[0], &editor->bCaretAtEnd);
if (GetKeyState(VK_SHIFT)>=0)
{
editor->pCursors[1] = editor->pCursors[0];
}
else
{
if (!is_selection) {
editor->pCursors[1] = tmp_cursor;
is_selection = 1;
}
}
ME_InvalidateSelection(editor);
HideCaret(editor->hWnd);
ME_MoveCaret(editor);
ShowCaret(editor->hWnd);
ME_ClearTempStyle(editor);
ME_SendSelChange(editor);
}
void ME_SendSelChange(ME_TextEditor *editor)
{
SELCHANGE sc;
ME_ClearTempStyle(editor);
if (!(editor->nEventMask & ENM_SELCHANGE))
return;
sc.nmhdr.hwndFrom = editor->hWnd;
sc.nmhdr.idFrom = GetWindowLongW(editor->hWnd, GWLP_ID);
sc.nmhdr.code = EN_SELCHANGE;
SendMessageW(editor->hWnd, EM_EXGETSEL, 0, (LPARAM)&sc.chrg);
sc.seltyp = SEL_EMPTY;
if (sc.chrg.cpMin != sc.chrg.cpMax)
sc.seltyp |= SEL_TEXT;
if (sc.chrg.cpMin < sc.chrg.cpMax+1) /* wth were RICHEDIT authors thinking ? */
sc.seltyp |= SEL_MULTICHAR;
SendMessageW(GetParent(editor->hWnd), WM_NOTIFY, sc.nmhdr.idFrom, (LPARAM)&sc);
}
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)
{
editor->pCursors[1].pRun = ME_FindItemFwd(editor->pBuffer->pFirst, diRun);
editor->pCursors[1].nOffset = 0;
editor->pCursors[0].pRun = ME_FindItemBack(editor->pBuffer->pLast, diRun);
editor->pCursors[0].nOffset = 0;
ME_InvalidateSelection(editor);
ME_ClearTempStyle(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_GetSelection(editor, &start, &end);
editor->pCursors[1] = editor->pCursors[0];
ME_Repaint(editor);
ME_ClearTempStyle(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)
{
editor->pCursors[1].pRun = editor->pCursors[0].pRun = ME_FindItemBack(editor->pBuffer->pLast, diRun);
editor->pCursors[1].nOffset = editor->pCursors[0].nOffset = 0;
ME_InvalidateSelection(editor);
ME_ClearTempStyle(editor);
return len;
}
ME_RunOfsFromCharOfs(editor, from, &editor->pCursors[1].pRun, &editor->pCursors[1].nOffset);
ME_RunOfsFromCharOfs(editor, to, &editor->pCursors[0].pRun, &editor->pCursors[0].nOffset);
return to;
}
void ME_LButtonDown(ME_TextEditor *editor, int x, int y, int clickNum)
{
ME_Cursor tmp_cursor;
int is_selection = 0;
BOOL is_shift;
editor->nUDArrowX = -1;
x += editor->horz_si.nPos;
y += editor->vert_si.nPos;
tmp_cursor = editor->pCursors[0];
is_selection = ME_IsSelection(editor);
is_shift = GetKeyState(VK_SHIFT) < 0;
ME_FindPixelPos(editor, x, y, &editor->pCursors[0], &editor->bCaretAtEnd);
if (x >= editor->rcFormat.left || is_shift)
{
if (clickNum > 1)
{
editor->pCursors[1] = editor->pCursors[0];
if (is_shift) {
if (x >= editor->rcFormat.left)
ME_SelectByType(editor, stWord);
else
ME_SelectByType(editor, stParagraph);
} else if (clickNum % 2 == 0) {
ME_SelectByType(editor, stWord);
} else {
ME_SelectByType(editor, stParagraph);
}
}
else if (!is_shift)
{
editor->nSelectionType = stPosition;
editor->pCursors[1] = editor->pCursors[0];
}
else if (!is_selection)
{
editor->nSelectionType = stPosition;
editor->pCursors[1] = tmp_cursor;
}
else if (editor->nSelectionType != stPosition)
{
ME_ExtendAnchorSelection(editor);
}
}
else
{
if (clickNum < 2) {
ME_SelectByType(editor, stLine);
} else if (clickNum % 2 == 0 || is_shift) {
ME_SelectByType(editor, stParagraph);
} else {
ME_SelectByType(editor, stDocument);
}
}
ME_InvalidateSelection(editor);
HideCaret(editor->hWnd);
ME_ShowCaret(editor);
ME_ClearTempStyle(editor);
ME_SendSelChange(editor);
}
void ME_LButtonDown(ME_TextEditor *editor, int x, int y)
{
ME_Cursor tmp_cursor;
int is_selection = 0;
editor->nUDArrowX = -1;
y += ME_GetYScrollPos(editor);
tmp_cursor = editor->pCursors[0];
is_selection = ME_IsSelection(editor);
if (x >= editor->selofs)
{
ME_FindPixelPos(editor, x, y, &editor->pCursors[0], &editor->bCaretAtEnd);
if (GetKeyState(VK_SHIFT)>=0)
{
editor->pCursors[1] = editor->pCursors[0];
}
else if (!is_selection) {
editor->pCursors[1] = tmp_cursor;
is_selection = 1;
}
ME_InvalidateSelection(editor);
HideCaret(editor->hWnd);
ME_MoveCaret(editor);
ShowCaret(editor->hWnd);
ME_ClearTempStyle(editor);
ME_SendSelChange(editor);
}
else
{
ME_DisplayItem *pRow;
editor->linesel = 1;
editor->sely = y;
/* Set pCursors[0] to beginning of line */
ME_FindPixelPos(editor, x, y, &editor->pCursors[1], &editor->bCaretAtEnd);
/* Set pCursors[1] to end of line */
pRow = ME_FindItemFwd(editor->pCursors[1].pRun, diStartRowOrParagraphOrEnd);
assert(pRow);
/* pCursor[0] is the position where the cursor will be drawn,
* pCursor[1] is the other end of the selection range
* pCursor[2] and [3] are backups of [0] and [1] so I
* don't have to look them up again
*/
if (pRow->type == diStartRow) {
/* FIXME WTF was I thinking about here ? */
ME_DisplayItem *pRun = ME_FindItemFwd(pRow, diRun);
assert(pRun);
editor->pCursors[0].pRun = pRun;
editor->pCursors[0].nOffset = 0;
editor->bCaretAtEnd = 1;
} else {
editor->pCursors[0].pRun = ME_FindItemBack(pRow, diRun);
assert(editor->pCursors[0].pRun && editor->pCursors[0].pRun->member.run.nFlags & MERF_ENDPARA);
editor->pCursors[0].nOffset = 0;
editor->bCaretAtEnd = 0;
}
editor->pCursors[2] = editor->pCursors[0];
editor->pCursors[3] = editor->pCursors[1];
ME_InvalidateSelection(editor);
HideCaret(editor->hWnd);
ME_MoveCaret(editor);
ShowCaret(editor->hWnd);
ME_ClearTempStyle(editor);
ME_SendSelChange(editor);
}
}
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]);
ME_InvalidateSelection(editor);
ME_ClearTempStyle(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)
{
editor->pCursors[1] = editor->pCursors[0];
ME_Repaint(editor);
}
ME_ClearTempStyle(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);
ME_ClearTempStyle(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)
editor->pCursors[0].nOffset = 0;
return to;
}
