listviewex.cpp

这些源代码

// ListViewEx.cpp : implementation file
//

#include "stdafx.h"
#include "DirList.h"
#include "ListViewEx.h"
#include "stdafx.h"
#include	"proto.h"

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

// Offset the text to keep it from butting up
// against the edge of the column
#define TEXT_OFFSET		6

/////////////////////////////////////////////////////////////////////////////
// CListViewEx

IMPLEMENT_DYNCREATE(CListViewEx, CListView)

BEGIN_MESSAGE_MAP(CListViewEx, CListView)
	//{{AFX_MSG_MAP(CListViewEx)
	//}}AFX_MSG_MAP
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CListViewEx construction/destruction

CListViewEx::CListViewEx()
{

	m_NormalTextColor = ::GetSysColor(COLOR_WINDOWTEXT);
	m_NormalBackColor = ::GetSysColor(COLOR_WINDOW);
	m_HighlightTextColor = ::GetSysColor(COLOR_HIGHLIGHTTEXT);
	m_HighlightBackColor = ::GetSysColor(COLOR_HIGHLIGHT);
	m_SelectedTextColor = ::GetSysColor(COLOR_INFOTEXT);
	m_SelectedBackColor = ::GetSysColor(COLOR_INACTIVEBORDER);

	m_NormalFont.CreatePointFont (80, "MS Sans Serif");
	m_BoldFont.CreatePointFont (120, "Arial Bold");
}

CListViewEx::~CListViewEx()
{
}

/////////////////////////////////////////////////////////////////////////////
// CListViewEx drawing

void CListViewEx::DrawItem(LPDRAWITEMSTRUCT lpDrawItemStruct)
{
	CListCtrl& lc=GetListCtrl();
	CDC* pDC = CDC::FromHandle(lpDrawItemStruct->hDC);
	CRect rcItem(lpDrawItemStruct->rcItem);
	UINT uiFlags;
	CImageList* pImageList;
	int nItem = lpDrawItemStruct->itemID;
	BOOL bFocus = (GetFocus() == this);
	COLORREF clrTextSave;
	COLORREF clrImage = m_NormalBackColor;
	CRect rcIcon;

	pImageList = lc.GetImageList (LVSIL_SMALL);
	CRect r;
	GetClientRect (r);
	rcItem.right = r.right;

	LV_ITEM lvi;
	lvi.mask = LVIF_IMAGE | LVIF_STATE;
	lvi.iItem = nItem;
	lvi.iSubItem = 0;
	lvi.stateMask = 0xFFFF; 	// get all state flags
	lc.GetItem(&lvi);

	CRect rcFullRow;
	lc.GetItemRect(nItem, rcFullRow, LVIR_BOUNDS);

	CRect rcLabel;
	lc.GetItemRect(nItem, rcLabel, LVIR_LABEL);

	CRect rcSubLabels = rcFullRow;
	rcSubLabels.left = rcLabel.right;

//	Show the colors.
//
//	There are six cases.
//		The item is selected and the view has the focus
//		The item is selected and the view does not have
//		  the focus
//		The item has the focus and is not selected and
//		  the view has the focus
//		The item has the focus, is not selected and the
//		  view does not have the focus
//		the item does not have the focus and is not
//		  selected and the view has the focus
//		the item does not have the focus and is not
//		  selected and the view does not have the focus
//
	lc.GetItemRect(nItem, rcIcon, LVIR_ICON);
	if (rcIcon.right > 2)
		rcFullRow.left += rcIcon.right + TEXT_OFFSET / 2;
	if (bFocus) // The view has the focus
	{
		if (lvi.state & LVIS_FOCUSED)
		{
			clrTextSave = pDC->SetTextColor(m_HighlightTextColor);
			pDC->FillRect(rcFullRow, &CBrush(m_HighlightBackColor));
		}
		else if (lvi.state & LVIS_SELECTED)
		{
			clrTextSave = pDC->SetTextColor(m_HighlightTextColor);
			pDC->FillRect(rcFullRow, &CBrush(m_HighlightBackColor));
		}
		else
		{
			clrTextSave = pDC->SetTextColor(m_NormalTextColor);
			pDC->FillRect(rcFullRow, &CBrush(m_NormalBackColor));
		}
	}
	else
	{
		if ((lvi.state & LVIS_FOCUSED) && (GetStyle() & LVS_SHOWSELALWAYS))
		{
			pDC->Rectangle (rcFullRow);
			pDC->SetTextColor(m_NormalTextColor);
			pDC->FillRect(rcFullRow, &CBrush(m_SelectedBackColor));
		}
		else if ((lvi.state & LVIS_SELECTED) && (GetStyle() & LVS_SHOWSELALWAYS))
		{
			pDC->SetTextColor(m_NormalTextColor);
			pDC->FillRect(rcFullRow, &CBrush(m_SelectedBackColor));
		}
		else
		{
			clrTextSave = pDC->SetTextColor(m_NormalTextColor);
			pDC->FillRect(rcFullRow, &CBrush(m_NormalBackColor));
		}
	}
	BOOL bSelected = lvi.state & (LVIS_DROPHILITED | LVIS_SELECTED);

//
// Set the color and mask for the icon.
// There are several values you can try:
//		ILD_BLEND25 -- Blends 25 percent of
//					   the system system color.
//		ILD_BLEND50 -- Blends 50 percent of
//					   the system system color.
//		ILD_NORMAL	-- Draws the image using the
//					   image list background color.
//
	if (lvi.state & LVIS_CUT)
	{
		clrImage = m_NormalBackColor;
		uiFlags |= ILD_SELECTED;
	}
	else if (bSelected)
	{
		clrImage = ::GetSysColor(COLOR_HIGHLIGHT);
		uiFlags |= ILD_FOCUS;
	}
	else
	{
		uiFlags = ILD_TRANSPARENT;
	}
//
// Draw the state icon if there is one
//
	UINT nStateImageMask = lvi.state & LVIS_STATEIMAGEMASK;
	if (nStateImageMask)
	{
		int nImage = (nStateImageMask>>12) - 1;
		pImageList = lc.GetImageList(LVSIL_STATE);
		if (pImageList)
		{
			pImageList->Draw(pDC, nImage,
				CPoint(rcItem.left, rcItem.top), uiFlags);
		}
	}
//
// Draw the icon if there is one
//
	pImageList = lc.GetImageList(LVSIL_SMALL);
	if (pImageList)
	{
		lc.GetItemRect(nItem, rcIcon, LVIR_ICON);
		UINT nOvlImageMask=lvi.state & LVIS_OVERLAYMASK;
		if (rcItem.left<rcItem.right-1)
		{
			ImageList_DrawEx(pImageList->m_hImageList, lvi.iImage,
					pDC->m_hDC,rcIcon.left + 1,rcIcon.top + 1, 16, 16,
					m_NormalBackColor, clrImage, uiFlags | nOvlImageMask);
		}
	}

	UINT uiAlign;
	uiFlags = DT_SINGLELINE | DT_NOPREFIX | DT_NOCLIP | DT_VCENTER | DT_END_ELLIPSIS;
//
// Draw the text in the columns.
//
	LV_COLUMN lvc;
	lvc.mask = LVCF_FMT | LVCF_WIDTH;
				   
	for(int nColumn = 0; lc.GetColumn(nColumn, &lvc); nColumn++)
	{
		CString strText;
		int nOffset;
		switch(lvc.fmt & LVCFMT_JUSTIFYMASK)
		{
			case LVCFMT_RIGHT:
				uiAlign = DT_RIGHT;
				break;
			case LVCFMT_CENTER:
				uiAlign = DT_CENTER;
				break;
			default:
				break;
		}
		if (!nColumn)
		{
			if (rcIcon.right > 2)
				nOffset = 1;
			else
				nOffset = 0;
			lc.GetItemRect(nItem, rcItem, LVIR_LABEL);
			rcLabel = rcItem;
// Override the switch statement. First column is always
// set to the left. (Doesn't have top be; change a needed)
			uiAlign = DT_LEFT;
		}
		else
		{
			nOffset = 1;
			rcItem.left = rcItem.right;
			rcItem.right += lvc.cx;
		}

		strText = lc.GetItemText(nItem, nColumn);
		if (strText.IsEmpty())
			continue;

		rcLabel = rcItem;
//
//	Adjust the text rectangle so the text doesn't butt
//	up against the edge of the column.
//
		rcLabel.left  += TEXT_OFFSET * nOffset;
		rcLabel.right -= TEXT_OFFSET;

		pDC->DrawText(strText, rcLabel, uiAlign | uiFlags);
	}
//
// If the item has the focus, draw the focus rectangle
//
	if (lvi.state & LVIS_FOCUSED && bFocus)
		pDC->DrawFocusRect(rcFullRow);
//
// Restore original colors if item was selected
//
	if (bSelected)
	{
		pDC->SetTextColor(clrTextSave);
	}
}

/////////////////////////////////////////////////////////////////////////////
// CListViewEx diagnostics

#ifdef _DEBUG

void CListViewEx::Dump(CDumpContext& dc) const
{
	CListView::Dump(dc);
}

#endif //_DEBUG

/////////////////////////////////////////////////////////////////////////////
// Some color functions. Not needed generally. Cut or modify
// as needed.

//	Sets the text color of an unselected, unhighlighted line
void CListViewEx::SetNormalTextColor (COLORREF newTextColor)
{
	m_NormalTextColor = newTextColor;
}

//	Sets the background color of an unselected, unhighlighted line
void CListViewEx::SetNormalBkgndColor (COLORREF newBackColor)
{
	m_NormalBackColor = newBackColor;
//
//	This is the general background color of the control, so
//	set that now.
	GetListCtrl().SetBkColor (newBackColor);
}

//	Sets the text color of a highlighteded line
void CListViewEx::SetHiliteTextColor (COLORREF newTextColor)
{
	m_HighlightTextColor = newTextColor;
}

//	Sets the background color of a highlighteded line
void CListViewEx::SetHiliteBkgndColor (COLORREF newBackColor)
{
	m_HighlightBackColor = newBackColor;
}

//	Sets the text color of a selected line
void CListViewEx::SetSelectedTextColor (COLORREF newTextColor)
{
	m_SelectedTextColor = newTextColor;
}

//	Sets the background color of a selected line
void CListViewEx::SetSelectedBkgndColor (COLORREF newBackColor)
{
	m_SelectedBackColor = newBackColor;
}