//------------------------------------------------------------------------
//! Returns dimensions of the cell text clicked
//!
//! @param owner The list control being clicked
//! @param nRow The index of the row
//! @param nCol The index of the column
//! @param cellText The contents of the cell clicked
//! @return The dimensions of the cell text
//------------------------------------------------------------------------
CRect CGridColumnTraitHyperLink::GetTextRect(CGridListCtrlEx& owner, int nRow, int nCol, const CString& cellText)
{
CRect rect;
ASSERT(nRow != -1);
CDC* pDC = owner.GetDC();
CFont* pOldFont = pDC->SelectObject(owner.GetCellFont());
CSize size = pDC->GetTextExtent(cellText);
pDC->SelectObject(pOldFont);
owner.ReleaseDC(pDC);
owner.GetCellRect(nRow, nCol, LVIR_LABEL, rect);
HDITEM hditem = { 0 };
hditem.mask = HDI_FORMAT;
owner.GetHeaderCtrl()->GetItem(nCol, &hditem);
// First item (Label) doesn't have a margin (Subitems does)
if (nCol != 0 && !(hditem.fmt & HDF_CENTER))
{
if (hditem.fmt & HDF_RIGHT)
rect.OffsetRect(-7, 0);
else
rect.OffsetRect(4, 0);
}
if (hditem.fmt & HDF_CENTER)
rect.DeflateRect((rect.Width() - size.cx) / 2, 0);
else if (hditem.fmt & HDF_RIGHT)
rect.left = rect.right - size.cx;
else
rect.right = rect.left + size.cx;
return rect;
}
//------------------------------------------------------------------------
//! Calculates the proper row-height according to font, which a cell value
//! editor should fit in.
//!
//! @param owner The list control for the inplace cell value editor
//! @return Height in pixels of the row.
//------------------------------------------------------------------------
int CGridColumnTraitText::GetCellFontHeight(CGridListCtrlEx& owner)
{
const CString testText = _T("yjpÍÁ");
CRect rcRequired = CRect(0, 0, 0, 0);
CClientDC dc(&owner);
dc.SelectObject(owner.GetCellFont());
dc.DrawText(testText, &rcRequired, DT_CALCRECT | DT_SINGLELINE);
return rcRequired.Height();
}
//------------------------------------------------------------------------
//! Overrides the custom draw handler, to allow custom coloring of rows.
//! - Focus rectangle display
//! - Use font size to increase row-height, but keep cell font-size
//! - Alternate row coloring
//!
//! @param owner The list control drawing
//! @param pLVCD Pointer to NMLVCUSTOMDRAW structure
//! @param pResult Modification to the drawing stage (CDRF_NEWFONT, etc.)
//------------------------------------------------------------------------
void CGridRowTraitText::OnCustomDraw(CGridListCtrlEx& owner, NMLVCUSTOMDRAW* pLVCD, LRESULT* pResult)
{
int nRow = (int)pLVCD->nmcd.dwItemSpec;
switch (pLVCD->nmcd.dwDrawStage)
{
case CDDS_ITEMPREPAINT | CDDS_SUBITEM:
{
// Remove the selection color for the focus cell, to make it easier to see focus
if (m_InvertCellSelection)
{
int nCol = pLVCD->iSubItem;
if (pLVCD->nmcd.uItemState & CDIS_SELECTED)
{
if (owner.GetFocusCell()==nCol && owner.GetFocusRow()==nRow)
{
pLVCD->nmcd.uItemState &= ~CDIS_SELECTED;
}
}
}
// Bug in Vista causes the cell color from previous cell to be used in the next
// even if having reverted the cell coloring in subitem-post-paint
if (pLVCD->clrText <= RGB(255,255,255) || pLVCD->clrTextBk <= RGB(255,255,255))
{
pLVCD->clrText = CLR_DEFAULT;
pLVCD->clrTextBk = CLR_DEFAULT;
if (UpdateTextColor(nRow, pLVCD->clrText))
*pResult |= CDRF_NEWFONT;
if (UpdateBackColor(nRow, pLVCD->clrTextBk))
*pResult |= CDRF_NEWFONT;
if (owner.OnDisplayRowColor(nRow, pLVCD->clrText, pLVCD->clrTextBk))
*pResult |= CDRF_NEWFONT;
}
}
break;
// Before painting a row
case CDDS_ITEMPREPAINT:
{
if (UpdateTextColor(nRow, pLVCD->clrText))
*pResult |= CDRF_NEWFONT;
if (UpdateBackColor(nRow, pLVCD->clrTextBk))
*pResult |= CDRF_NEWFONT;
if (owner.OnDisplayRowColor(nRow, pLVCD->clrText, pLVCD->clrTextBk))
*pResult |= CDRF_NEWFONT;
LOGFONT newFont = {0};
if (owner.OnDisplayRowFont(nRow, newFont))
{
// New font provided
CDC* pDC = CDC::FromHandle(pLVCD->nmcd.hdc);
CFont* pNewFont = new CFont;
VERIFY( pNewFont->CreateFontIndirect(&newFont) );
m_pOldFont = pDC->SelectObject(pNewFont);
m_FontAllocated = true;
*pResult |= CDRF_NOTIFYPOSTPAINT; // We need to restore the original font
*pResult |= CDRF_NEWFONT;
}
else
{
if (owner.GetFont()!=owner.GetCellFont())
{
// Using special cell font because of SetMargin()
CDC* pDC = CDC::FromHandle(pLVCD->nmcd.hdc);
m_pOldFont = pDC->SelectObject(owner.GetCellFont());
*pResult |= CDRF_NOTIFYPOSTPAINT; // We need to restore the original font
*pResult |= CDRF_NEWFONT;
}
}
if (pLVCD->nmcd.uItemState & CDIS_FOCUS)
{
if (owner.GetFocus() != &owner)
break;
// If drawing focus row, then remove focus state and request to draw it later
// - Row paint request can come twice, with and without focus flag
// - Only respond to the one with focus flag, else DrawFocusRect XOR will cause solid or blank focus-rectangle
if (owner.GetFocusRow() == nRow)
{
if (owner.GetFocusCell() >= 0)
{
// We want to draw a cell-focus-rectangle instead of row-focus-rectangle
pLVCD->nmcd.uItemState &= ~CDIS_FOCUS;
*pResult |= CDRF_NOTIFYPOSTPAINT;
}
else if (owner.GetExtendedStyle() & LVS_EX_GRIDLINES)
{
// Avoid bug where bottom of focus rectangle is missing when using grid-lines
// - Draw the focus-rectangle for the entire row (explicit)
pLVCD->nmcd.uItemState &= ~CDIS_FOCUS;
*pResult |= CDRF_NOTIFYPOSTPAINT;
}
}
}
}
break;
// After painting a row
case CDDS_ITEMPOSTPAINT:
{
if (m_pOldFont!=NULL)
{
// Restore the original font
CDC* pDC = CDC::FromHandle(pLVCD->nmcd.hdc);
CFont* pNewFont = pDC->SelectObject(m_pOldFont);
if (m_FontAllocated)
{
m_FontAllocated = false;
delete pNewFont;
}
m_pOldFont = NULL;
}
if (CRect(pLVCD->nmcd.rc)==CRect(0,0,0,0))
break;
if (owner.GetFocusRow()!=nRow)
break;
if (owner.GetFocus() != &owner)
break;
// Perform the drawing of the focus rectangle
if (owner.GetFocusCell() >= 0)
{
// Draw the focus-rectangle for a single-cell
CRect rcHighlight;
CDC* pDC = CDC::FromHandle(pLVCD->nmcd.hdc);
VERIFY( owner.GetCellRect(nRow, owner.GetFocusCell(), LVIR_BOUNDS, rcHighlight) );
int cxborder = ::GetSystemMetrics(SM_CXBORDER);
// When the label column is placed first it has a left-margin
if (owner.GetFocusCell()==0 && owner.GetFocusCell()==owner.GetFirstVisibleColumn())
{
rcHighlight.left += cxborder*2;
}
else
// Prevent focus rectangle to overlap with cell-image (Only room for this when not first column)
if (owner.GetFirstVisibleColumn()!=owner.GetFocusCell())
{
rcHighlight.left -= cxborder;
}
// Adjust rectangle according to grid-lines
if (owner.GetExtendedStyle() & LVS_EX_GRIDLINES)
{
rcHighlight.bottom -= cxborder;
}
pDC->DrawFocusRect(rcHighlight);
}
else if (owner.GetExtendedStyle() & LVS_EX_GRIDLINES)
{
// Avoid bug where bottom of focus rectangle is missing when using grid-lines
// - Draw the focus-rectangle for the entire row (explicit)
CRect rcHighlight;
CDC* pDC = CDC::FromHandle(pLVCD->nmcd.hdc);
// Using LVIR_BOUNDS to get the entire row-rectangle
VERIFY( owner.GetItemRect(nRow, rcHighlight, LVIR_BOUNDS) );
// Adjust rectangle according to grid-lines
int cxborder = ::GetSystemMetrics(SM_CXBORDER);
rcHighlight.bottom -= cxborder;
pDC->DrawFocusRect(rcHighlight);
}
}
break;
}
}
