newtreelistctrl.cpp

vc++源代码

// NewTreeListCtrl.cpp : implementation file
//

#include "stdafx.h"
#include "TLView.h"
#include "NewTreeListCtrl.h"
#include "TLFrame.h"

#ifdef _DEBUG
#define new DEBUG_NEW
#undef THIS_FILE
static char THIS_FILE[] = __FILE__;
#endif

#define ID_TREE_LIST_HEADER 370

/////////////////////////////////////////////////////////////////////////////
// CTLItem

CTLItem::CTLItem()
{
	m_cEnding = ' ';
	m_itemString = "";
	m_Bold = FALSE;
	m_Color = ::GetSysColor(COLOR_WINDOWTEXT);
}

CTLItem::CTLItem(CTLItem &copyItem)
{
	m_cEnding = copyItem.m_cEnding;
	m_itemString = copyItem.GetItemString();
	m_Bold = copyItem.m_Bold;
	m_Color = copyItem.m_Color;
	itemData = copyItem.itemData;
}


CString CTLItem::GetSubstring(int m_nSub)
{
	CString m_tmpStr("");
	int i=0, nHits=0;
	int length = m_itemString.GetLength();

	while((i<length) && (nHits<=m_nSub))
	{
		if(m_itemString[i]==m_cEnding)
		{
			nHits++;
		}
		else
		if(nHits==m_nSub)
			m_tmpStr+=m_itemString[i];

		i++;
	}

	if((i>=length) && (nHits<m_nSub))
		return "";
	else
		return m_tmpStr;
}

void CTLItem::SetSubstring(int m_nSub, CString m_sText)
{
	CString m_tmpStr("");
	int i=0, nHits=0, first=0;
	int length = m_itemString.GetLength();

	while((i<length) && (nHits<=m_nSub))
	{
		if(m_itemString[i]==m_cEnding)
		{
			if(nHits!=m_nSub)
				first = i;
			nHits++;
		}

		i++;
	}

	CString m_newStr("");
	if((nHits>m_nSub) || ((nHits==m_nSub) && (i>=length)))
	{
		// insert in the middle
		if(first!=0)
		{
			m_newStr = m_itemString.Left(first);
			m_newStr += m_cEnding; 
		}
		m_newStr += m_sText;
		if(i<length)
		{
			m_newStr += m_cEnding;
			m_newStr += m_itemString.Right(m_itemString.GetLength()-i);
		}

		m_itemString=m_newStr;
	}
	else
	{
		// insert at the end
		for(i=nHits;i<m_nSub;i++)
			m_itemString+=m_cEnding;
		m_itemString+=m_sText;
	}
}

/////////////////////////////////////////////////////////////////////////////
// CNewTreeListCtrl

CNewTreeListCtrl::CNewTreeListCtrl()
{
	m_nColumns = m_nColumnsWidth = 0;
	m_nOffset = 0;
}

CNewTreeListCtrl::~CNewTreeListCtrl()
{
}


BEGIN_MESSAGE_MAP(CNewTreeListCtrl, CTreeCtrl)
	//{{AFX_MSG_MAP(CNewTreeListCtrl)
	ON_WM_PAINT()
	ON_WM_CREATE()
	ON_WM_LBUTTONDOWN()
	ON_WM_LBUTTONDBLCLK()
	ON_WM_KEYDOWN()
	ON_WM_DESTROY()
	//}}AFX_MSG_MAP
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CNewTreeListCtrl message handlers

int CNewTreeListCtrl::OnCreate(LPCREATESTRUCT lpCreateStruct) 
{
	if (CTreeCtrl::OnCreate(lpCreateStruct) == -1)
		return -1;


	return 0;
}

HTREEITEM CNewTreeListCtrl::GetTreeItem(int nItem)
{
	HTREEITEM m_ParentItem = GetRootItem();
	int m_nCount = 0;

	while((m_ParentItem!=NULL) && (m_nCount<nItem))
	{
		m_nCount ++ ;
		GetNextSiblingItem(m_ParentItem);
	}

	return m_ParentItem;
}

int CNewTreeListCtrl::GetListItem(HTREEITEM hItem)
{
	HTREEITEM m_ParentItem = GetRootItem();
	int m_nCount = 0;

	while((m_ParentItem!=NULL) && (m_ParentItem!=hItem))
	{
		m_nCount ++ ;
		GetNextSiblingItem(m_ParentItem);
	}

	return m_nCount;
}

int CNewTreeListCtrl::InsertColumn( int nCol, LPCTSTR lpszColumnHeading, int nFormat, int nWidth, int nSubItem)
{
	HD_ITEM hdi;
	hdi.mask = HDI_TEXT | HDI_FORMAT;
	if(nWidth!=-1)
	{
		hdi.mask |= HDI_WIDTH;
		hdi.cxy = nWidth;
	}
	
	hdi.pszText = (LPTSTR)lpszColumnHeading;
	hdi.fmt = HDF_OWNERDRAW;

	if(nFormat == LVCFMT_RIGHT)
		hdi.fmt |= HDF_RIGHT;
	else
	if(nFormat == LVCFMT_CENTER)
		hdi.fmt |= HDF_CENTER;
	else
		hdi.fmt |= HDF_LEFT;

	m_nColumns ++ ;

	int m_nReturn = m_wndHeader.InsertItem(nCol, &hdi);

	if(m_nColumns==1)
	{
		m_wndHeader.SetItemImage(m_nReturn, 0);
	}

	RecalcColumnsWidth();

	return m_nReturn;
}

int CNewTreeListCtrl::GetColumnWidth(int nCol)
{
	HD_ITEM hItem;
	hItem.mask = HDI_WIDTH;
	if(!m_wndHeader.GetItem(nCol, &hItem))
		return 0;

	return hItem.cxy;
}

int CNewTreeListCtrl::GetColumnAlign(int nCol)
{
	HD_ITEM hItem;
	hItem.mask = HDI_FORMAT;
	if(!m_wndHeader.GetItem(nCol, &hItem))
		return LVCFMT_LEFT;

	if(hItem.fmt & HDF_RIGHT)
		return LVCFMT_RIGHT;
	else
	if(hItem.fmt & HDF_CENTER)
		return LVCFMT_CENTER;
	else
		return LVCFMT_LEFT;
}

void CNewTreeListCtrl::RecalcColumnsWidth()
{
	m_nColumnsWidth = 0;
	for(int i=0;i<m_nColumns;i++)
		m_nColumnsWidth += GetColumnWidth(i);
}

void CNewTreeListCtrl::DrawItemText (CDC* pDC, CString text, CRect rect, int nWidth, int nFormat)
{
    //
    // Make sure the text will fit in the prescribed rectangle, and truncate
    // it if it won't.
    //
    BOOL bNeedDots = FALSE;
    int nMaxWidth = nWidth - 4;

    while ((text.GetLength()>0) && (pDC->GetTextExtent((LPCTSTR) text).cx > (nMaxWidth - 4))) {
        text = text.Left (text.GetLength () - 1);
        bNeedDots = TRUE;
    }

    if (bNeedDots) {
        if (text.GetLength () >= 1)
            text = text.Left (text.GetLength () - 1);
        text += "...";
    }

    //
    // Draw the text into the rectangle using MFC's handy CDC::DrawText
    // function.
    //
    rect.right = rect.left + nMaxWidth;

    UINT nStyle = DT_VCENTER | DT_SINGLELINE;
    if (nFormat == LVCFMT_LEFT)
        nStyle |= DT_LEFT;
    else if (nFormat == LVCFMT_CENTER)
        nStyle |= DT_CENTER;
    else // nFormat == LVCFMT_RIGHT
        nStyle |= DT_RIGHT;

	if((text.GetLength()>0) && (rect.right>rect.left))
		pDC->DrawText (text, rect, nStyle);
}


void CNewTreeListCtrl::OnPaint() 
{
	CPaintDC dc(this); // device context for painting

	CRect rcClip, rcClient;
	dc.GetClipBox( &rcClip );
	GetClientRect(&rcClient);

	// Set clip region to be same as that in paint DC
	CRgn rgn;
	rgn.CreateRectRgnIndirect( &rcClip );
	dc.SelectClipRgn(&rgn);
	rgn.DeleteObject();
	
	COLORREF m_wndColor = GetSysColor( COLOR_WINDOW );

	dc.SetViewportOrg(m_nOffset, 0);

	dc.SetTextColor(m_wndColor);

	 
	// First let the control do its default drawing.
	CWnd::DefWindowProc( WM_PAINT, (WPARAM)dc.m_hDC, 0 );

	HTREEITEM hItem = GetFirstVisibleItem();

	int n = GetVisibleCount(), m_nWidth;

	dc.FillSolidRect(GetColumnWidth(0),1,rcClient.Width(),rcClient.Height(),m_wndColor);

	CTLItem *pItem;

	// the most urgent thing is to erase the labels that were drawn by the tree
	while(hItem!=NULL && n>=0)
	{
		CRect rect;

		UINT selflag = TVIS_DROPHILITED | TVIS_SELECTED;
	
		CRect m_labelRect;
		GetItemRect( hItem, &m_labelRect, TRUE );
		GetItemRect( hItem, &rect, FALSE );
		if(GetColumnsNum()>1)
			rect.left = min(m_labelRect.left, GetColumnWidth(0));
		else
			rect.left = m_labelRect.left;
		rect.right = m_nColumnsWidth;
		dc.FillSolidRect(rect.left,rect.top,rect.Width(),rect.Height(),m_wndColor);

		hItem = GetNextVisibleItem( hItem );
		n--;
	}

	// create the font
	CFont *pFontDC;
	CFont fontDC, boldFontDC;
	LOGFONT logfont;

	CFont *pFont = GetFont();
	pFont->GetLogFont( &logfont );

	fontDC.CreateFontIndirect( &logfont );
	pFontDC = dc.SelectObject( &fontDC );

	logfont.lfWeight = 700;
	boldFontDC.CreateFontIndirect( &logfont );

	// and now let's get to the painting itself

	hItem = GetFirstVisibleItem();
	n = GetVisibleCount();
	while(hItem!=NULL && n>=0)
	{
		CRect rect;

		UINT selflag = TVIS_DROPHILITED | TVIS_SELECTED;
	
		if ( !(GetItemState( hItem, selflag ) & selflag ))
		{
			dc.SetBkMode(TRANSPARENT);

			pItem = (CTLItem *)CTreeCtrl::GetItemData(hItem);
			CString sItem = pItem->GetItemText();


			CRect m_labelRect;
			GetItemRect( hItem, &m_labelRect, TRUE );
			GetItemRect( hItem, &rect, FALSE );
			if(GetColumnsNum()>1)
				rect.left = min(m_labelRect.left, GetColumnWidth(0));
			else
				rect.left = m_labelRect.left;
			rect.right = m_nColumnsWidth;


			dc.SetBkColor( m_wndColor );

			dc.SetTextColor( pItem->m_Color );

			if(pItem->m_Bold)
			{
				dc.SelectObject( &boldFontDC );
			}

			DrawItemText(&dc, sItem, CRect(rect.left+2, rect.top, GetColumnWidth(0), rect.bottom), GetColumnWidth(0)-rect.left-2, GetColumnAlign(0));

			m_nWidth = 0;
			for(int i=1;i<m_nColumns;i++)
			{
				m_nWidth += GetColumnWidth(i-1);
				DrawItemText(&dc, pItem->GetSubstring(i), CRect(m_nWidth, rect.top, m_nWidth+GetColumnWidth(i), rect.bottom), GetColumnWidth(i), GetColumnAlign(i));
			}
			
			dc.SetTextColor(::GetSysColor (COLOR_WINDOWTEXT ));

			if(pItem->m_Bold)
			{
				dc.SelectObject( &fontDC );
			}
		}
		else
		{

			CRect m_labelRect;
			GetItemRect( hItem, &m_labelRect, TRUE );
			GetItemRect( hItem, &rect, FALSE );
			if(GetColumnsNum()>1)
				rect.left = min(m_labelRect.left, GetColumnWidth(0));
			else
				rect.left = m_labelRect.left;
			rect.right = m_nColumnsWidth;


			// If the item is selected, paint the rectangle with the system color
			// COLOR_HIGHLIGHT

			COLORREF m_highlightColor = ::GetSysColor (COLOR_HIGHLIGHT);

			CBrush brush(m_highlightColor);
			dc.FillRect (rect, &brush);

			// draw a dotted focus rectangle

			dc.DrawFocusRect (rect);
			
			pItem = (CTLItem *)CTreeCtrl::GetItemData(hItem);
			CString sItem = pItem->GetItemText();

			dc.SetBkColor(m_highlightColor);

			dc.SetTextColor(::GetSysColor (COLOR_HIGHLIGHTTEXT));

			if(pItem->m_Bold)
			{
				dc.SelectObject( &boldFontDC );
			}

			DrawItemText(&dc, sItem, CRect(rect.left+2, rect.top, GetColumnWidth(0), rect.bottom), GetColumnWidth(0)-rect.left-2, GetColumnAlign(0));

			m_nWidth = 0;
			for(int i=1;i<m_nColumns;i++)