// GridCellCheck.cpp : implementation file
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//
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// MFC Grid Control - Main grid cell class
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//
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// Provides the implementation for a combobox cell type of the
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// grid control.
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//
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// Written by Chris Maunder <chris@codeproject.com>
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// Copyright (c) 1998-2005. All Rights Reserved.
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//
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// Parts of the code contained in this file are based on the original
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// CInPlaceList from http://www.codeguru.com/listview
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//
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// This code may be used in compiled form in any way you desire. This
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// file may be redistributed unmodified by any means PROVIDING it is
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// not sold for profit without the authors written consent, and
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// providing that this notice and the authors name and all copyright
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// notices remains intact.
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//
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// An email letting me know how you are using it would be nice as well.
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//
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// This file is provided "as is" with no expressed or implied warranty.
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// The author accepts no liability for any damage/loss of business that
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// this product may cause.
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//
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// For use with CGridCtrl v2.22+
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//
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// History:
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// 23 Jul 2001 - Complete rewrite
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// 13 Mar 2004 - GetCellExtent and GetCheckPlacement fixed by Yogurt
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// - Read-only now honoured - Yogurt
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//
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/////////////////////////////////////////////////////////////////////////////
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#include "stdafx.h"
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#include "GridCell.h"
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#include "GridCtrl.h"
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#include "GridCellCheck.h"
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#ifdef _DEBUG
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#define new DEBUG_NEW
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#undef THIS_FILE
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static char THIS_FILE[] = __FILE__;
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#endif
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IMPLEMENT_DYNCREATE(CGridCellCheck, CGridCell)
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CGridCellCheck::CGridCellCheck() : CGridCell()
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{
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m_bChecked = FALSE;
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//m_Rect.IsRectNull();
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}
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CSize CGridCellCheck::GetCellExtent(CDC* pDC)
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{
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// Using SM_CXHSCROLL as a guide to the size of the checkbox
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int nWidth = GetSystemMetrics(SM_CXHSCROLL) + 2*GetMargin();
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CSize cellSize = CGridCell::GetCellExtent(pDC);
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cellSize.cx += nWidth;
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cellSize.cy = max (cellSize.cy, nWidth);
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return cellSize;
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}
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// i/o: i=dims of cell rect; o=dims of text rect
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BOOL CGridCellCheck::GetTextRect( LPRECT pRect)
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{
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BOOL bResult = CGridCell::GetTextRect(pRect);
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if (bResult)
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{
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int nWidth = GetSystemMetrics(SM_CXHSCROLL) + 2*GetMargin();
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pRect->left += nWidth;
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if (pRect->left > pRect->right)
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pRect->left = pRect->right;
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}
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return bResult;
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}
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// Override draw so that when the cell is selected, a drop arrow is shown in the RHS.
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BOOL CGridCellCheck::Draw(CDC* pDC, int nRow, int nCol, CRect rect, BOOL bEraseBkgnd /*=TRUE*/)
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{
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BOOL bResult = CGridCell::Draw(pDC, nRow, nCol, rect, bEraseBkgnd);
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#ifndef _WIN32_WCE
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// Store the cell's dimensions for later
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m_Rect = rect;
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CRect CheckRect = GetCheckPlacement();
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rect.left = CheckRect.right;
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// enough room to draw?
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// if (CheckRect.Width() < rect.Width() && CheckRect.Height() < rect.Height()) {
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// Do the draw
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pDC->DrawFrameControl(GetCheckPlacement(), DFC_BUTTON,
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(m_bChecked)? DFCS_BUTTONCHECK | DFCS_CHECKED : DFCS_BUTTONCHECK);
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// }
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#endif
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return bResult;
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}
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void CGridCellCheck::OnClick(CPoint PointCellRelative)
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{
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// PointCellRelative is relative to the topleft of the cell. Convert to client coords
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PointCellRelative += m_Rect.TopLeft();
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if (GetCheckPlacement().PtInRect(PointCellRelative))
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{
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m_bChecked = !m_bChecked;
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GetGrid()->InvalidateRect(m_Rect);
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}
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// Bail if cell is read-only
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CCellID cell = GetGrid()->GetCellFromPt(PointCellRelative);
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if(cell.row > -1 && cell.col > -1)
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{
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if (!GetGrid()->IsCellEditable(cell))
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return;
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}
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// GetCheckPlacement returns the checkbox dimensions in client coords. Only check/
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// uncheck if the user clicked in the box
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// if (GetCheckPlacement().PtInRect(PointCellRelative))
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// {
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// m_bChecked = !m_bChecked;
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// GetGrid()->InvalidateRect(m_Rect);
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// }
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}
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//////////////////////////////////////////////////////////////////////
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// Operations
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//////////////////////////////////////////////////////////////////////
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BOOL CGridCellCheck::SetCheck(BOOL bChecked /*=TRUE*/)
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{
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BOOL bTemp = m_bChecked;
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m_bChecked = bChecked;
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if (!m_Rect.IsRectEmpty())
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GetGrid()->InvalidateRect(m_Rect);
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return bTemp;
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}
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BOOL CGridCellCheck::GetCheck()
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{
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return m_bChecked;
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}
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//////////////////////////////////////////////////////////////////////
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// Protected implementation
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//////////////////////////////////////////////////////////////////////
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// Returns the dimensions and placement of the checkbox in client coords.
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CRect CGridCellCheck::GetCheckPlacement()
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{
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int nWidth = GetSystemMetrics(SM_CXHSCROLL);
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CRect place = m_Rect + CSize(GetMargin(), GetMargin());
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place.right = place.left + nWidth;
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place.bottom = place.top + nWidth;
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/* for centering
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int nDiff = (place.Width() - nWidth)/2;
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if (nDiff > 0)
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{
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place.left += nDiff;
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place.right = place.left + nWidth;
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}
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nDiff = (place.Height() - nWidth)/2;
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if (nDiff > 0)
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{
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place.top += nDiff;
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place.bottom = place.top + nWidth;
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}
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*/
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if (m_Rect.Height() < nWidth + 2 * static_cast<int> (GetMargin()))
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{
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place.top = m_Rect.top + (m_Rect.Height() - nWidth) / 2;
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place.bottom = place.top + nWidth;
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}
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return place;
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}
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