ListCtrlEx.cpp
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上传日期:2013-04-03
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文件大小:11k
- // ListCtrlEx.cpp : implementation of the CListCtrlEx class
- //
- // This is a part of the Microsoft Foundation Classes C++ library.
- // Copyright (C) 1992-1998 Microsoft Corporation
- // All rights reserved.
- //
- // This source code is only intended as a supplement to the
- // Microsoft Foundation Classes Reference and related
- // electronic documentation provided with the library.
- // See these sources for detailed information regarding the
- // Microsoft Foundation Classes product.
- #include "stdafx.h"
- #include "ListCtrlEx.h"
- #ifdef _DEBUG
- #define new DEBUG_NEW
- #undef THIS_FILE
- static char THIS_FILE[] = __FILE__;
- #endif
- static COLORREF colTextColor[] = {
- RGB(0, 0, 255),
- RGB(255, 128, 128),
- RGB(255, 128, 0),
- RGB(0, 0, 160)
- };
- #define NR_COL_COLORS (sizeof(colTextColor) / sizeof(*colTextColor))
- /////////////////////////////////////////////////////////////////////////////
- // CListCtrlEx
- IMPLEMENT_DYNCREATE(CListCtrlEx, CListCtrl)
- BEGIN_MESSAGE_MAP(CListCtrlEx, CListCtrl)
- //{{AFX_MSG_MAP(CListCtrlEx)
- ON_WM_SIZE()
- ON_WM_PAINT()
- ON_WM_SETFOCUS()
- ON_WM_KILLFOCUS()
- //}}AFX_MSG_MAP
- ON_MESSAGE(LVM_SETIMAGELIST, OnSetImageList)
- ON_MESSAGE(LVM_SETTEXTCOLOR, OnSetTextColor)
- ON_MESSAGE(LVM_SETTEXTBKCOLOR, OnSetTextBkColor)
- ON_MESSAGE(LVM_SETBKCOLOR, OnSetBkColor)
- END_MESSAGE_MAP()
- /////////////////////////////////////////////////////////////////////////////
- // CListCtrlEx construction/destruction
- CListCtrlEx::CListCtrlEx()
- {
- m_bFullRowSel = FALSE;
- m_bClientWidthSel = TRUE;
- m_cxClient = 0;
- m_cxStateImageOffset = 0;
- m_clrText = ::GetSysColor(COLOR_WINDOWTEXT);
- m_clrTextBk = ::GetSysColor(COLOR_WINDOW);
- m_clrBkgnd = ::GetSysColor(COLOR_WINDOW);
- }
- CListCtrlEx::~CListCtrlEx()
- {
- }
- BOOL CListCtrlEx::PreCreateWindow(CREATESTRUCT& cs)
- {
- // default is report view and full row selection
- cs.style &= ~LVS_TYPEMASK;
- cs.style |= LVS_REPORT | LVS_OWNERDRAWFIXED;
- m_bFullRowSel = TRUE;
- return(CListCtrl::PreCreateWindow(cs));
- }
- BOOL CListCtrlEx::SetFullRowSel(BOOL bFullRowSel)
- {
- // no painting during change
- LockWindowUpdate();
- m_bFullRowSel = bFullRowSel;
- BOOL bRet;
- if (m_bFullRowSel)
- bRet = ModifyStyle(0L, LVS_OWNERDRAWFIXED);
- else
- bRet = ModifyStyle(LVS_OWNERDRAWFIXED, 0L);
- // repaint window if we are not changing view type
- if (bRet && (GetStyle() & LVS_TYPEMASK) == LVS_REPORT)
- Invalidate();
- // repaint changes
- UnlockWindowUpdate();
- return(bRet);
- }
- BOOL CListCtrlEx::GetFullRowSel()
- {
- return(m_bFullRowSel);
- }
- /////////////////////////////////////////////////////////////////////////////
- // CListCtrlEx drawing
- // offsets for first and other columns
- #define OFFSET_FIRST 2
- #define OFFSET_OTHER 6
- void CListCtrlEx::DrawItem(LPDRAWITEMSTRUCT lpDrawItemStruct)
- {
- CDC* pDC = CDC::FromHandle(lpDrawItemStruct->hDC);
- CRect rcItem(lpDrawItemStruct->rcItem);
- UINT uiFlags = ILD_TRANSPARENT;
- CImageList* pImageList;
- int nItem = lpDrawItemStruct->itemID;
- BOOL bFocus = (GetFocus() == this);
- COLORREF clrTextSave, clrBkSave;
- COLORREF clrImage = m_clrBkgnd;
- static _TCHAR szBuff[MAX_PATH];
- LPCTSTR pszText;
- // get item data
- LV_ITEM lvi;
- lvi.mask = LVIF_TEXT | LVIF_IMAGE | LVIF_STATE;
- lvi.iItem = nItem;
- lvi.iSubItem = 0;
- lvi.pszText = szBuff;
- lvi.cchTextMax = sizeof(szBuff);
- lvi.stateMask = 0xFFFF; // get all state flags
- GetItem(&lvi);
- BOOL bSelected = (bFocus || (GetStyle() & LVS_SHOWSELALWAYS)) && lvi.state & LVIS_SELECTED;
- bSelected = bSelected || (lvi.state & LVIS_DROPHILITED);
- // set colors if item is selected
- CRect rcAllLabels;
- GetItemRect(nItem, rcAllLabels, LVIR_BOUNDS);
- CRect rcLabel;
- GetItemRect(nItem, rcLabel, LVIR_LABEL);
- rcAllLabels.left = rcLabel.left;
- if (m_bClientWidthSel && rcAllLabels.right<m_cxClient)
- rcAllLabels.right = m_cxClient;
- // @@
- clrTextSave = pDC->SetTextColor(colTextColor[0]);
-
- if (bSelected)
- {
- //@@
- //clrTextSave = pDC->SetTextColor(::GetSysColor(COLOR_HIGHLIGHTTEXT));
- clrBkSave = pDC->SetBkColor(::GetSysColor(COLOR_HIGHLIGHT));
- pDC->FillRect(rcAllLabels, &CBrush(::GetSysColor(COLOR_HIGHLIGHT)));
- }
- else
- pDC->FillRect(rcAllLabels, &CBrush(m_clrTextBk));
- // set color and mask for the icon
- if (lvi.state & LVIS_CUT)
- {
- clrImage = m_clrBkgnd;
- uiFlags |= ILD_BLEND50;
- }
- else if (bSelected)
- {
- clrImage = ::GetSysColor(COLOR_HIGHLIGHT);
- uiFlags |= ILD_BLEND50;
- }
- // draw state icon
- UINT nStateImageMask = lvi.state & LVIS_STATEIMAGEMASK;
- if (nStateImageMask)
- {
- int nImage = (nStateImageMask>>12) - 1;
- pImageList = GetImageList(LVSIL_STATE);
- if (pImageList)
- {
- pImageList->Draw(pDC, nImage,
- CPoint(rcItem.left, rcItem.top), ILD_TRANSPARENT);
- }
- }
- // draw normal and overlay icon
- CRect rcIcon;
- GetItemRect(nItem, rcIcon, LVIR_ICON);
- pImageList = GetImageList(LVSIL_SMALL);
- if (pImageList)
- {
- UINT nOvlImageMask=lvi.state & LVIS_OVERLAYMASK;
- if (rcItem.left<rcItem.right-1)
- {
- ImageList_DrawEx(pImageList->m_hImageList, lvi.iImage,
- pDC->m_hDC,rcIcon.left,rcIcon.top, 16, 16,
- m_clrBkgnd, clrImage, uiFlags | nOvlImageMask);
- }
- }
- // draw item label
- GetItemRect(nItem, rcItem, LVIR_LABEL);
- rcItem.right -= m_cxStateImageOffset;
- pszText = MakeShortString(pDC, szBuff,
- rcItem.right-rcItem.left, 2*OFFSET_FIRST);
- rcLabel = rcItem;
- rcLabel.left += OFFSET_FIRST;
- rcLabel.right -= OFFSET_FIRST;
- pDC->DrawText(pszText,-1,rcLabel,DT_LEFT | DT_SINGLELINE | DT_NOPREFIX | DT_NOCLIP | DT_VCENTER);
- // draw labels for extra columns
- LV_COLUMN lvc;
- lvc.mask = LVCF_FMT | LVCF_WIDTH;
- for(int nColumn = 1; GetColumn(nColumn, &lvc); nColumn++)
- {
- rcItem.left = rcItem.right;
- rcItem.right += lvc.cx;
- int nRetLen = GetItemText(nItem, nColumn,
- szBuff, sizeof(szBuff));
- if (nRetLen == 0)
- continue;
- pszText = MakeShortString(pDC, szBuff,
- rcItem.right - rcItem.left, 2*OFFSET_OTHER);
- UINT nJustify = DT_LEFT;
- if(pszText == szBuff)
- {
- switch(lvc.fmt & LVCFMT_JUSTIFYMASK)
- {
- case LVCFMT_RIGHT:
- nJustify = DT_RIGHT;
- break;
- case LVCFMT_CENTER:
- nJustify = DT_CENTER;
- break;
- default:
- break;
- }
- }
- rcLabel = rcItem;
- rcLabel.left += OFFSET_OTHER;
- rcLabel.right -= OFFSET_OTHER;
- if (nColumn < NR_COL_COLORS)
- pDC->SetTextColor(colTextColor[nColumn]);
- pDC->DrawText(pszText, -1, rcLabel,
- nJustify | DT_SINGLELINE | DT_NOPREFIX | DT_NOCLIP | DT_VCENTER);
- }
- // draw focus rectangle if item has focus
- if (lvi.state & LVIS_FOCUSED && bFocus)
- pDC->DrawFocusRect(rcAllLabels);
- // set original colors if item was selected
- if (bSelected)
- {
- pDC->SetTextColor(clrTextSave);
- pDC->SetBkColor(clrBkSave);
- }
- }
- LPCTSTR CListCtrlEx::MakeShortString(CDC* pDC, LPCTSTR lpszLong, int nColumnLen, int nOffset)
- {
- static const _TCHAR szThreeDots[] = _T("...");
- int nStringLen = lstrlen(lpszLong);
- if(nStringLen == 0 ||
- (pDC->GetTextExtent(lpszLong, nStringLen).cx + nOffset) <= nColumnLen)
- {
- return(lpszLong);
- }
- static _TCHAR szShort[MAX_PATH];
- lstrcpy(szShort,lpszLong);
- int nAddLen = pDC->GetTextExtent(szThreeDots,sizeof(szThreeDots)).cx;
- for(int i = nStringLen-1; i > 0; i--)
- {
- szShort[i] = 0;
- if((pDC->GetTextExtent(szShort, i).cx + nOffset + nAddLen)
- <= nColumnLen)
- {
- break;
- }
- }
- lstrcat(szShort, szThreeDots);
- return(szShort);
- }
- void CListCtrlEx::RepaintSelectedItems()
- {
- CRect rcItem, rcLabel;
- // invalidate focused item so it can repaint properly
- int nItem = GetNextItem(-1, LVNI_FOCUSED);
- if(nItem != -1)
- {
- GetItemRect(nItem, rcItem, LVIR_BOUNDS);
- GetItemRect(nItem, rcLabel, LVIR_LABEL);
- rcItem.left = rcLabel.left;
- InvalidateRect(rcItem, FALSE);
- }
- // if selected items should not be preserved, invalidate them
- if(!(GetStyle() & LVS_SHOWSELALWAYS))
- {
- for(nItem = GetNextItem(-1, LVNI_SELECTED);
- nItem != -1; nItem = GetNextItem(nItem, LVNI_SELECTED))
- {
- GetItemRect(nItem, rcItem, LVIR_BOUNDS);
- GetItemRect(nItem, rcLabel, LVIR_LABEL);
- rcItem.left = rcLabel.left;
- InvalidateRect(rcItem, FALSE);
- }
- }
- // update changes
- UpdateWindow();
- }
- /////////////////////////////////////////////////////////////////////////////
- // CListCtrlEx diagnostics
- #ifdef _DEBUG
- void CListCtrlEx::Dump(CDumpContext& dc) const
- {
- CListCtrl::Dump(dc);
- dc << "m_bFullRowSel = " << (UINT)m_bFullRowSel;
- dc << "n";
- dc << "m_cxStateImageOffset = " << m_cxStateImageOffset;
- dc << "n";
- }
- #endif //_DEBUG
- /////////////////////////////////////////////////////////////////////////////
- // CListCtrlEx message handlers
- LRESULT CListCtrlEx::OnSetImageList(WPARAM wParam, LPARAM lParam)
- {
- // if we're running Windows 4, there's no need to offset the
- // item text location
- OSVERSIONINFO info;
- info.dwOSVersionInfoSize = sizeof(info);
- VERIFY(::GetVersionEx(&info));
- if( (int) wParam == LVSIL_STATE && info.dwMajorVersion < 4)
- {
- int cx, cy;
- if(::ImageList_GetIconSize((HIMAGELIST)lParam, &cx, &cy))
- m_cxStateImageOffset = cx;
- else
- m_cxStateImageOffset = 0;
- }
- return(Default());
- }
- LRESULT CListCtrlEx::OnSetTextColor(WPARAM wParam, LPARAM lParam)
- {
- m_clrText = (COLORREF)lParam;
- return(Default());
- }
- LRESULT CListCtrlEx::OnSetTextBkColor(WPARAM wParam, LPARAM lParam)
- {
- m_clrTextBk = (COLORREF)lParam;
- return(Default());
- }
- LRESULT CListCtrlEx::OnSetBkColor(WPARAM wParam, LPARAM lParam)
- {
- m_clrBkgnd = (COLORREF)lParam;
- return(Default());
- }
- void CListCtrlEx::OnSize(UINT nType, int cx, int cy)
- {
- m_cxClient = cx;
- CListCtrl::OnSize(nType, cx, cy);
- }
- void CListCtrlEx::OnPaint()
- {
- // in full row select mode, we need to extend the clipping region
- // so we can paint a selection all the way to the right
- if (m_bClientWidthSel &&
- (GetStyle() & LVS_TYPEMASK) == LVS_REPORT &&
- GetFullRowSel())
- {
- CRect rcAllLabels;
- GetItemRect(0, rcAllLabels, LVIR_BOUNDS);
- if(rcAllLabels.right < m_cxClient)
- {
- // need to call BeginPaint (in CPaintDC c-tor)
- // to get correct clipping rect
- CPaintDC dc(this);
- CRect rcClip;
- dc.GetClipBox(rcClip);
- rcClip.left = min(rcAllLabels.right-1, rcClip.left);
- rcClip.right = m_cxClient;
- InvalidateRect(rcClip, FALSE);
- // EndPaint will be called in CPaintDC d-tor
- }
- }
- CListCtrl::OnPaint();
- }
- void CListCtrlEx::OnSetFocus(CWnd* pOldWnd)
- {
- CListCtrl::OnSetFocus(pOldWnd);
- // check if we are getting focus from label edit box
- if(pOldWnd!=NULL && pOldWnd->GetParent()==this)
- return;
- // repaint items that should change appearance
- if(m_bFullRowSel && (GetStyle() & LVS_TYPEMASK)==LVS_REPORT)
- RepaintSelectedItems();
- }
- void CListCtrlEx::OnKillFocus(CWnd* pNewWnd)
- {
- CListCtrl::OnKillFocus(pNewWnd);
- // check if we are losing focus to label edit box
- if(pNewWnd != NULL && pNewWnd->GetParent() == this)
- return;
- // repaint items that should change appearance
- if(m_bFullRowSel && (GetStyle() & LVS_TYPEMASK) == LVS_REPORT)
- RepaintSelectedItems();
- }