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📄 xlistctrl.cpp

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					int index = 0;
					if (str.IsEmpty())
					{
						// str is empty, try to get from first listbox string
						if (m_pListBox->GetCount() > 0)
							m_pListBox->GetText(0, str);

						SetItemText(nItem, nSubItem, str);
					}
					else
					{
						// set listbox selection from subitem text
						index = m_pListBox->FindStringExact(-1, str);
						if (index == LB_ERR)
							index = 0;
					}
					m_pListBox->SetCurSel(index);
					m_pListBox->GetText(index, m_strInitialComboString);
					m_pListBox->SetActive(11);
				}
			}
		}
	}
	pDC->SelectObject(pOldPen);
}

#endif

///////////////////////////////////////////////////////////////////////////////
// DrawCheckbox
void CXListCtrl::DrawCheckbox(int nItem,
							  int nSubItem,
							  CDC *pDC,
							  COLORREF crText,
							  COLORREF crBkgnd,
							  CRect& rect,
							  XLISTCTRLDATA *pXLCD)
{
	ASSERT(pDC);
	ASSERT(pXLCD);

	GetDrawColors(nItem, nSubItem, crText, crBkgnd);

	pDC->FillSolidRect(&rect, crBkgnd);

	CRect chkboxrect;
	chkboxrect = rect;
	chkboxrect.bottom -= 1;
	chkboxrect.left += 9;		// line up checkbox with header checkbox
	chkboxrect.right = chkboxrect.left + chkboxrect.Height();	// width = height

	CString str;
	str = GetItemText(nItem, nSubItem);

	if (str.IsEmpty())
	{
		// center the checkbox

		chkboxrect.left = rect.left + rect.Width()/2 - chkboxrect.Height()/2 - 1;
		chkboxrect.right = chkboxrect.left + chkboxrect.Height();
	}

	// fill rect around checkbox with white
	pDC->FillSolidRect(&chkboxrect, m_crWindow);

	chkboxrect.left += 1;

	// draw border
	pDC->DrawEdge(&chkboxrect, EDGE_SUNKEN, BF_RECT);

	if (pXLCD[nSubItem].nCheckedState == 1)
	{
		CPen *pOldPen = NULL;

		CPen graypen(PS_SOLID, 1, m_crGrayText);
		CPen blackpen(PS_SOLID, 1, RGB(0,0,0));

		if (pXLCD[0].bEnabled)
			pOldPen = pDC->SelectObject(&blackpen);
		else
			pOldPen = pDC->SelectObject(&graypen);

		// draw the checkmark
		int x = chkboxrect.left + 9;
		ASSERT(x < chkboxrect.right);
		int y = chkboxrect.top + 3;
		int i;
		for (i = 0; i < 4; i++)
		{
			pDC->MoveTo(x, y);
			pDC->LineTo(x, y+3);
			x--;
			y++;
		}
		for (i = 0; i < 3; i++)
		{
			pDC->MoveTo(x, y);
			pDC->LineTo(x, y+3);
			x--;
			y--;
		}

		if (pOldPen)
			pDC->SelectObject(pOldPen);
	}

	if (!str.IsEmpty())
	{
		pDC->SetBkMode(TRANSPARENT);
		pDC->SetTextColor(crText);
		pDC->SetBkColor(crBkgnd);
		CRect textrect;
		textrect = rect;
		textrect.left = chkboxrect.right + 4;

		pDC->DrawText(str, &textrect, DT_LEFT | DT_VCENTER | DT_SINGLELINE);
	}
}

///////////////////////////////////////////////////////////////////////////////
// GetDrawColors
void CXListCtrl::GetDrawColors(int nItem,
							   int nSubItem,
							   COLORREF& colorText,
							   COLORREF& colorBkgnd)
{
	DWORD dwStyle    = GetStyle();
	DWORD dwExStyle  = GetExtendedStyle();

	COLORREF crText  = colorText;
	COLORREF crBkgnd = colorBkgnd;

	if (GetItemState(nItem, LVIS_SELECTED))
	{
		if (dwExStyle & LVS_EX_FULLROWSELECT)
		{
			// selected?  if so, draw highlight background
			crText  = m_crHighLightText;
			crBkgnd = m_crHighLight;

			// has focus?  if not, draw gray background
			if (m_hWnd != ::GetFocus())
			{
				if (dwStyle & LVS_SHOWSELALWAYS)
				{
					crText  = m_crWindowText;
					crBkgnd = m_crBtnFace;
				}
				else
				{
					crText  = colorText;
					crBkgnd = colorBkgnd;
				}
			}
		}
		else	// not full row select
		{
			if (nSubItem == 0)
			{
				// selected?  if so, draw highlight background
				crText  = m_crHighLightText;
				crBkgnd = m_crHighLight;

				// has focus?  if not, draw gray background
				if (m_hWnd != ::GetFocus())
				{
					if (dwStyle & LVS_SHOWSELALWAYS)
					{
						crText  = m_crWindowText;
						crBkgnd = m_crBtnFace;
					}
					else
					{
						crText  = colorText;
						crBkgnd = colorBkgnd;
					}
				}
			}
		}
	}

	colorText = crText;
	colorBkgnd = crBkgnd;
}

///////////////////////////////////////////////////////////////////////////////
// DrawImage
int CXListCtrl::DrawImage(int nItem,
						  int nSubItem,
						  CDC* pDC,
						  COLORREF crText,
						  COLORREF crBkgnd,
						  CRect rect,
  						  XLISTCTRLDATA *pXLCD)
{
	GetDrawColors(nItem, nSubItem, crText, crBkgnd);

	pDC->FillSolidRect(&rect, crBkgnd);

	int nWidth = 0;
	rect.left += m_HeaderCtrl.GetSpacing();

	CImageList* pImageList = GetImageList(LVSIL_SMALL);
	if (pImageList)
	{
		SIZE sizeImage;
		sizeImage.cx = sizeImage.cy = 0;
		IMAGEINFO info;

		int nImage = -1;
		if (pXLCD)
			nImage = pXLCD[nSubItem].nImage;

		if (nImage == -1)
			return 0;

		if (pImageList->GetImageInfo(nImage, &info))
		{
			sizeImage.cx = info.rcImage.right - info.rcImage.left;
			sizeImage.cy = info.rcImage.bottom - info.rcImage.top;
		}

		if (nImage >= 0)
		{
			if (rect.Width() > 0)
			{
				POINT point;

				point.y = rect.CenterPoint().y - (sizeImage.cy >> 1);
				point.x = rect.left;

				SIZE size;
				size.cx = rect.Width() < sizeImage.cx ? rect.Width() : sizeImage.cx;
				size.cy = rect.Height() < sizeImage.cy ? rect.Height() : sizeImage.cy;

				// save image list background color
				COLORREF rgb = pImageList->GetBkColor();

				// set image list background color
				pImageList->SetBkColor(crBkgnd);
				pImageList->DrawIndirect(pDC, nImage, point, size, CPoint(0, 0));
				pImageList->SetBkColor(rgb);

				nWidth = sizeImage.cx + m_HeaderCtrl.GetSpacing();
			}
		}
	}

	return nWidth;
}

///////////////////////////////////////////////////////////////////////////////
// DrawText
void CXListCtrl::DrawText(int nItem,
						  int nSubItem,
						  CDC *pDC,
						  COLORREF crText,
						  COLORREF crBkgnd,
						  CRect& rect,
						  XLISTCTRLDATA *pXLCD)
{
	ASSERT(pDC);
	ASSERT(pXLCD);

	GetDrawColors(nItem, nSubItem, crText, crBkgnd);

	pDC->FillSolidRect(&rect, crBkgnd);

	CString str;
	str = GetItemText(nItem, nSubItem);

	if (!str.IsEmpty())
	{
		// get text justification
		HDITEM hditem;
		hditem.mask = HDI_FORMAT;
		m_HeaderCtrl.GetItem(nSubItem, &hditem);
		int nFmt = hditem.fmt & HDF_JUSTIFYMASK;
		UINT nFormat = DT_VCENTER | DT_SINGLELINE;
		if (nFmt == HDF_CENTER)
			nFormat |= DT_CENTER;
		else if (nFmt == HDF_LEFT)
			nFormat |= DT_LEFT;
		else
			nFormat |= DT_RIGHT;

		CFont *pOldFont = NULL;
		CFont boldfont;

		// check if bold specified for subitem
		if (pXLCD && pXLCD[nSubItem].bBold)
		{
			CFont *font = pDC->GetCurrentFont();
			if (font)
			{
				LOGFONT lf;
				font->GetLogFont(&lf);
				lf.lfWeight = FW_BOLD;
				boldfont.CreateFontIndirect(&lf);
				pOldFont = pDC->SelectObject(&boldfont);
			}
		}
		pDC->SetBkMode(TRANSPARENT);
		pDC->SetTextColor(crText);
		pDC->SetBkColor(crBkgnd);
		pDC->DrawText(str, &rect, nFormat);
		if (pOldFont)
			pDC->SelectObject(pOldFont);
	}
}

///////////////////////////////////////////////////////////////////////////////
// GetSubItemRect
BOOL CXListCtrl::GetSubItemRect(int nItem,
								int nSubItem,
								int nArea,
								CRect& rect)
{
	ASSERT(nItem >= 0);
	ASSERT(nItem < GetItemCount());
	if ((nItem < 0) || nItem >= GetItemCount())
		return FALSE;
	ASSERT(nSubItem >= 0);
	ASSERT(nSubItem < GetColumns());
	if ((nSubItem < 0) || nSubItem >= GetColumns())
		return FALSE;

	BOOL bRC = CListCtrl::GetSubItemRect(nItem, nSubItem, nArea, rect);

	// if nSubItem == 0, the rect returned by CListCtrl::GetSubItemRect
	// is the entire row, so use left edge of second subitem

	if (nSubItem == 0)
	{
		if (GetColumns() > 1)
		{
			CRect rect1;
			bRC = GetSubItemRect(nItem, 1, LVIR_BOUNDS, rect1);
			rect.right = rect1.left;
		}
	}

	return bRC;
}

///////////////////////////////////////////////////////////////////////////////
// OnLButtonDown
void CXListCtrl::OnLButtonDown(UINT nFlags, CPoint point)
{
	TRACE(_T("in CXListCtrl::OnLButtonDown\n"));

	int nItem = -1;
	CRect rect;

	int i;
	for (i = 0; i < GetItemCount(); i++)
	{
		if (CListCtrl::GetItemRect(i, &rect, LVIR_BOUNDS))
		{
			if (rect.PtInRect(point))
			{
				nItem = i;
				break;
			}
		}
	}

	if (nItem == -1)
	{
#ifndef DO_NOT_INCLUDE_XCOMBOLIST
		if (m_pListBox)
			OnComboEscape(0, 0);
#endif
	}
	else
	{
		XLISTCTRLDATA *pXLCD = (XLISTCTRLDATA *) CListCtrl::GetItemData(nItem);
		if (!pXLCD)
		{
			return;
		}

		if (!pXLCD[0].bEnabled)
			return;

		CRect rect;

		int nSubItem = -1;

		// check if a subitem checkbox was clicked

		for (i = 0; i < GetColumns(); i++)
		{
			GetSubItemRect(nItem, i, LVIR_BOUNDS, rect);
			if (rect.PtInRect(point))
			{
				nSubItem = i;
				break;
			}
		}

		if (nSubItem == -1)
		{
			// -1 = no checkbox for this subitem

#ifndef DO_NOT_INCLUDE_XCOMBOLIST
			if (m_pListBox)
			{
				OnComboEscape(0, 0);
			}
#endif
		}
		else
		{
			if (pXLCD[nSubItem].nCheckedState >= 0)
			{
				int nChecked = pXLCD[nSubItem].nCheckedState;

				nChecked = (nChecked == 0) ? 1 : 0;

				pXLCD[nSubItem].nCheckedState = nChecked;

				UpdateSubItem(nItem, nSubItem);

				CWnd *pWnd = GetParent();
				if (!pWnd)
					pWnd = GetOwner();
				if (pWnd && ::IsWindow(pWnd->m_hWnd))
					pWnd->SendMessage(WM_XLISTCTRL_CHECKBOX_CLICKED, 
								nItem, nSubItem);

				// now update checkbox in header

				// -1 = no checkbox in column header
				if (GetHeaderCheckedState(nSubItem) != XHEADERCTRL_NO_IMAGE)
				{
					int nCheckedCount = CountCheckedItems(nSubItem);

					if (nCheckedCount == GetItemCount())
						SetHeaderCheckedState(nSubItem, XHEADERCTRL_CHECKED_IMAGE);
					else
						SetHeaderCheckedState(nSubItem, XHEADERCTRL_UNCHECKED_IMAGE);
				}
			}
#ifndef DO_NOT_INCLUDE_XCOMBOLIST
			else if (pXLCD[nSubItem].bCombo)
			{
				if (m_pListBox)
				{
					m_pListBox->DestroyWindow();
					delete m_pListBox;
					m_pListBox = NULL;
				}

				rect.left = rect.right - rect.Height();
				if (point.x >= rect.left && point.y <= rect.right)
				{
					pXLCD[nSubItem].bComboIsClicked = TRUE;
					m_bComboIsClicked = TRUE;
					m_nComboItem = nItem;
					m_nComboSubItem = nSubItem;
					UpdateSubItem(nItem, nSubItem);
					SetTimer(1, 100, NULL);
				}
			}
			else if (m_pListBox)
			{
				OnComboEscape(0, 0);
			}
#endif
		}
	}

	CListCtrl::OnLButtonDown(nFlags, point);
}

///////////////////////////////////////////////////////////////////////////////
// OnPaint
void CXListCtrl::OnPaint()
{
    Default();
	if (GetItemCount() <= 0)
	{
		CDC* pDC = GetDC();
		int nSavedDC = pDC->SaveDC();

		CRect rc;
		GetWindowRect(&rc);
		ScreenToClient(&rc);
		CHeaderCtrl* pHC = GetHeaderCtrl();
		if (pHC != NULL)
		{
			CRect rcH;
			pHC->GetItemRect(0, &rcH);
			rc.top += rcH.bottom;
		}
		rc.top += 10;
		CString strText;
		strText = _T("There are no items to show in this view.");

		COLORREF crText = m_crWindowText;
		COLORREF crBkgnd = m_crWindow;

		CBrush brush(crBkgnd);
		pDC->FillRect(rc, &brush);

		pDC->SetTextColor(crText);
		pDC->SetBkColor(crBkgnd);
		pDC->SelectStockObject(ANSI_VAR_FONT);
		pDC->DrawText(strText, -1, rc, DT_CENTER | DT_WORDBREAK | DT_NOPREFIX | DT_NOCLIP);
		pDC->RestoreDC(nSavedDC);
		ReleaseDC(pDC);
	}
}

///////////////////////////////////////////////////////////////////////////////
// InsertItem
int CXListCtrl::InsertItem(const LVITEM* pItem)
{
	ASSERT(pItem->iItem >= 0);
	if (pItem->iItem < 0)
		return -1;

	int index = CListCtrl::InsertItem(pItem);

	if (index < 0)
		return index;

	XLISTCTRLDATA *pXLCD = new XLISTCTRLDATA [GetColumns()];
	ASSERT(pXLCD);
	if (!pXLCD)
		return -1;

	pXLCD[0].crText       = m_crWindowText;
	pXLCD[0].crBackground = m_crWindow;
	pXLCD[0].nImage       = pItem->iImage;

	CListCtrl::SetItemData(index, (DWORD) pXLCD);

	return index;
}

///////////////////////////////////////////////////////////////////////////////
// InsertItem
int CXListCtrl::InsertItem(int nItem, LPCTSTR lpszItem)
{
	ASSERT(nItem >= 0);
	if (nItem < 0)
		return -1;

	return InsertItem(nItem,
					  lpszItem,
					  m_crWindowText,
					  m_crWindow);
}

///////////////////////////////////////////////////////////////////////////////
// InsertItem
int CXListCtrl::InsertItem(int nItem,
						   LPCTSTR lpszItem,
						   COLORREF crText,
						   COLORREF crBackground)
{
	ASSERT(nItem >= 0);
	if (nItem < 0)

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