//------------------------------------------------------------------------
//! EN_CHANGE notification handler to monitor text modifications
//------------------------------------------------------------------------
void CGridMultilineEditorText::OnEnChange()
{
if (m_InitialModify && (GetStyle() & ES_MULTILINE))
m_InitialModify = false;// ES_MULTILINE causes EN_CHANGE not to fire at initial SetWindowText
// If multiline support, then resize the edit according to contents
if ((m_MaxLines > 1) && (GetStyle() & ES_MULTILINE) && (m_LineHeight > 0))
{
// Get number of text lines
CString cellText;
GetWindowText(cellText);
int nLineCount = CharacterCount(cellText, _T("\n"));
if (nLineCount > 0)
{
if ((UINT)nLineCount > m_MaxLines - 1)
nLineCount = m_MaxLines - 1;
}
// Check if the current rect matches the number of lines
CRect rect;
GetWindowRect(&rect);
if (rect.Height() / m_LineHeight != nLineCount + 1)
{
rect.bottom += (nLineCount + 1 - rect.Height() / m_LineHeight) * m_LineHeight;
GetParent()->ScreenToClient(&rect);
MoveWindow(rect.left, rect.top, rect.Width(), rect.Height(), TRUE);
}
}
CGridEditorText::OnEnChange();
}
//------------------------------------------------------------------------
//! Create a CEdit as cell value editor
//!
//! @param owner The list control starting a cell edit
//! @param nRow The index of the row
//! @param nCol The index of the column
//! @param dwStyle The windows style to use when creating the CEdit
//! @param rect The rectangle where the inplace cell value editor should be placed
//! @return Pointer to the cell editor to use
//------------------------------------------------------------------------
CEdit* CGridColumnTraitMultilineEdit::CreateEdit(CGridListCtrlEx& owner, int nRow, int nCol, DWORD dwStyle, const CRect& rect)
{
CGridMultilineEditorText* pEdit = new CGridMultilineEditorText(nRow, nCol);
CRect limitRect(rect);
if (m_EditMaxLines > 1 && GetStyle() & ES_MULTILINE)
{
// Calculate the number of lines in the cell text, expand the CEdit to match this
CString cellText = owner.GetItemText(nRow, nCol);
int nLineHeight = GetCellFontHeight(owner);
int nLineCount = CharacterCount(cellText, _T("\n"));
if (nLineCount > 0)
{
if ((UINT)nLineCount > m_EditMaxLines - 1)
nLineCount = m_EditMaxLines - 1;
limitRect.bottom += nLineHeight*nLineCount;
}
pEdit->SetMaxLines(m_EditMaxLines);
pEdit->SetLineHeight(nLineHeight);
}
VERIFY(pEdit->Create(WS_CHILD | dwStyle, limitRect, &owner, 0));
return pEdit;
}
size_t CharacterCount(std::string const& str, int mask) {
return CharacterCount(begin(str), end(str), mask);
}
