【VC开源代码栏目提醒】:网学会员,鉴于大家对VC开源代码十分关注，论文会员在此为大家搜集整理了“NEWHEADERCTRL.CPP”一文，供大家参考学习!
// NewHeaderCtrl.cpp : implementation file
//
#include "stdafx.h"
#include "TLView.h"
#include "NewHeaderCtrl.h"
#include "TLFrame.h"
#ifdef _DEBUG
#define new DEBUG_NEW
#undef THIS_FILE
static char THIS_FILE[] = __FILE__;
#endif
/////////////////////////////////////////////////////////////////////////////
// CNewHeaderCtrl
CNewHeaderCtrl::CNewHeaderCtrl()
{
m_pImageList = NULL;
m_RTL = FALSE;
}
CNewHeaderCtrl::~CNewHeaderCtrl()
{
}
BEGIN_MESSAGE_MAP(CNewHeaderCtrl, CHeaderCtrl)
//{{AFX_MSG_MAP(CNewHeaderCtrl)
ON_WM_PAINT()
//}}AFX_MSG_MAP
END_MESSAGE_MAP()
/////////////////////////////////////////////////////////////////////////////
// CNewHeaderCtrl message handlers
void CNewHeaderCtrl::DrawItem( LPDRAWITEMSTRUCT lpDrawItemStruct )
{
CDC dc;
dc.Attach( lpDrawItemStruct->hDC );
// Save DC
int nSavedDC = dc.SaveDC();
/* if(m_RTL)
{
dc.SetViewportOrg(0, 0);
dc.SetMapMode(MM_TEXT);
}
*/
// Get the column rect
CRect rcLabel( lpDrawItemStruct->rcItem );
/* CTLFrame *pFrame = (CTLFrame *)GetParent();
CRect m_clientRect;
pFrame->m_tree.GetClientRect(&m_clientRect);
if(m_RTL)
{
int left = rcLabel.left;
int right = rcLabel.right;
rcLabel.left = m_clientRect.Width() - right;
rcLabel.right = m_clientRect.Width() - left;
}
*/
// Set clipping region to limit drawing within column
CRgn rgn;
rgn.CreateRectRgnIndirect( &rcLabel );
dc.SelectObject( &rgn );
rgn.DeleteObject();
// Labels are offset by a certain amount
// This offset is related to the width of a space character
int offset = dc.GetTextExtent(_T(" "), 1 ).cx*2;
// Draw image from image list
// Get the column text and format
TCHAR buf[256];
HD_ITEM hditem;
hditem.mask = HDI_TEXT | HDI_FORMAT;
hditem.pszText = buf;
hditem.cchTextMax = 255;
GetItem( lpDrawItemStruct->itemID, &hditem );
// Determine format for drawing column label
UINT uFormat = DT_SINGLELINE | DT_NOPREFIX | DT_NOCLIP
| DT_VCENTER | DT_END_ELLIPSIS ;
if( hditem.fmt & HDF_CENTER)
uFormat |= DT_CENTER;
else if( hditem.fmt & HDF_RIGHT)
uFormat |= DT_RIGHT;
else
uFormat |= DT_LEFT;
if(!(uFormat & DT_RIGHT))
{
// Adjust the rect if the mouse button is pressed on it
if( lpDrawItemStruct->itemState == ODS_SELECTED )
{
rcLabel.left++;
rcLabel.top += 2;
rcLabel.right++;
}
rcLabel.left += offset;
rcLabel.right -= offset;
// Draw column label
if( rcLabel.left < rcLabel.right )
dc.DrawText(buf,-1,rcLabel, uFormat);
}
int imageIndex;
if (m_pImageList &&
m_mapImageIndex.Lookup( lpDrawItemStruct->itemID, imageIndex ) )
{
if( imageIndex != -1 )
{
if(uFormat & DT_RIGHT)
// draw to the left of the label
m_pImageList->Draw(&dc, imageIndex,
CPoint( rcLabel.left + offset,offset/3 ),
ILD_TRANSPARENT );
else
// draw to the right
m_pImageList->Draw(&dc, imageIndex,
CPoint( rcLabel.right - dc.GetTextExtent(_T(buf), 1 ).cx*2,offset/3 ),
ILD_TRANSPARENT );
// Now adjust the label rectangle
IMAGEINFO imageinfo;
if( m_pImageList->GetImageInfo( imageIndex, &imageinfo ) )
{
rcLabel.left += offset/2 +
imageinfo.rcImage.right - imageinfo.rcImage.left;
}
}
}
if(uFormat & DT_RIGHT)
{
// Adjust the rect if the mouse button is pressed on it
if( lpDrawItemStruct->itemState == ODS_SELECTED )
{
rcLabel.left++;
rcLabel.top += 2;
rcLabel.right++;
}
rcLabel.left += offset;
rcLabel.right -= offset;
// Draw column label
if( rcLabel.left < rcLabel.right )
dc.DrawText(buf,-1,rcLabel, uFormat);
}
/* if(m_RTL)
{
dc.SetViewportOrg(m_clientRect.Width(), 0);
CSize ext = dc.GetViewportExt();
ext.cx = ext.cx > 0 ? -ext.cx : ext.cx;
dc.SetMapMode(MM_ANISOTROPIC);
dc.SetViewportExt(ext);
}
*/
// Restore dc
dc.RestoreDC( nSavedDC );
// Detach the dc before returning
dc.Detach();
}
CImageList* CNewHeaderCtrl::SetImageList( CImageList* pImageList )
{
CImageList *pPrevList = m_pImageList;
m_pImageList = pImageList;
return pPrevList;
}
int CNewHeaderCtrl::GetItemImage( int nItem )
{
int imageIndex;
if( m_mapImageIndex.Lookup( nItem, imageIndex ) )
return imageIndex;
return -1;
}
void CNewHeaderCtrl::SetItemImage( int nItem, int nImage )
{
// Save the image index
m_mapImageIndex[nItem] = nImage;
// Change the item to ownder drawn
HD_ITEM hditem;
hditem.mask = HDI_FORMAT;
GetItem( nItem, &hditem );
hditem.fmt |= HDF_OWNERDRAW;
SetItem( nItem, &hditem );
// Invalidate header control so that it gets redrawn
Invalidate();
}
void CNewHeaderCtrl::Autofit(int nOverrideItemData /*= -1*/, int nOverrideWidth /*= 0*/)
{
int nItemCount = GetItemCount();
int nTotalWidthOfColumns = 0;
int nDifferenceInWidht;
int nItem;
HD_ITEM hi;
CRect rClient;
if (!m_bAutofit)
return;
SetRedraw(FALSE);
GetParent()->GetClientRect(&rClient);
if (-1 != nOverrideItemData)
rClient.right -= nOverrideWidth;
// Get total width of all columns
for (nItem = 0; nItem < nItemCount; nItem++)
{
if (nItem == nOverrideItemData) // Don't mess with the item being resized by the user
continue;
hi.mask = HDI_WIDTH;
GetItem(nItem, &hi);
nTotalWidthOfColumns += hi.cxy;
}
if (nTotalWidthOfColumns != rClient.Width())
{
nDifferenceInWidht = abs(nTotalWidthOfColumns-rClient.Width()); // We need to shrink/expand all columns!
// Shrink/expand all columns proportionally based on their current size
for (nItem = 0; nItem < nItemCount; nItem++)
{
if (nItem == nOverrideItemData) // Skip the overrride column if there is one!
continue;
hi.mask = HDI_WIDTH;
GetItem(nItem, &hi);
hi.mask = HDI_WIDTH;
hi.cxy = (hi.cxy * rClient.Width()) / nTotalWidthOfColumns;
SetItem(nItem, &hi);
}
}
SetRedraw(TRUE);
Invalidate();
}
void CNewHeaderCtrl::OnPaint()
{
CPaintDC dc(this); // device context for painting
/* CTLFrame *pFrame = (CTLFrame *)GetParent();
CRect m_clientRect;
pFrame->m_tree.GetClientRect(&m_clientRect);
if(m_RTL)
{
dc.SetViewportOrg(m_clientRect.Width(), 0);
CSize ext = dc.GetViewportExt();
ext.cx = ext.cx > 0 ? -ext.cx : ext.cx;
dc.SetMapMode(MM_ANISOTROPIC);
dc.SetViewportExt(ext);
}
*/
CWnd::DefWindowProc( WM_PAINT, (WPARAM)dc.m_hDC, 0 );
/* if(m_RTL)
{
dc.SetViewportOrg(0, 0);
dc.SetMapMode(MM_TEXT);
}*/
// Do not call CHeaderCtrl::OnPaint() for painting messages
}
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