skinheaderctrl.cpp

windows ce 6.0下的实现Listctrl自画

// SkinHeaderCtrl.cpp : implementation file
//

#include "stdafx.h"
#include "CE6_ListCtrl_HideScrollBar.h"
#include "SkinHeaderCtrl.h"
#include "memdc.h"

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

/////////////////////////////////////////////////////////////////////////////
// CSkinHeaderCtrl

CSkinHeaderCtrl::CSkinHeaderCtrl(){}

CSkinHeaderCtrl::~CSkinHeaderCtrl(){}


BEGIN_MESSAGE_MAP(CSkinHeaderCtrl, CHeaderCtrl)
//{{AFX_MSG_MAP(CSkinHeaderCtrl)
    ON_WM_PAINT()ON_WM_ERASEBKGND()
//}}AFX_MSG_MAP
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CSkinHeaderCtrl message handlers

void CSkinHeaderCtrl::DrawItem(LPDRAWITEMSTRUCT lpDrawItemStruct)
{
}

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

    CRect rect, rectItem, clientRect;
    GetClientRect(&rect);
    GetClientRect(&clientRect);
    CMemDC memDC(&dc, rect);
    CDC bitmapDC;
    bitmapDC.CreateCompatibleDC(&dc);

    memDC.FillSolidRect(&rect, RGB(76, 85, 118));

    CBitmap bitmapSpan;
    bitmapSpan.LoadBitmap(IDB_COLUMNHEADER_SPAN);
    CBitmap *pOldBitmapSpan = bitmapDC.SelectObject(&bitmapSpan);

    memDC.StretchBlt(rect.left + 2, 0, rect.Width(), 12, &bitmapDC, 0, 0, 1, 12,
        SRCCOPY);

    bitmapDC.SelectObject(pOldBitmapSpan);
    bitmapSpan.DeleteObject();

    int nItems = GetItemCount();

    CBitmap bitmap;
    CBitmap bitmap2;
    CBitmap bitmap3;

    bitmap.LoadBitmap(IDB_COLUMNHEADER_START);
    bitmap2.LoadBitmap(IDB_COLUMNHEADER_SPAN);
    bitmap3.LoadBitmap(IDB_COLUMNHEADER_END);

    for (int i = 0; i < nItems; i++)
    {
        TCHAR buf1[256];
        HD_ITEM hditem1;

        hditem1.mask = HDI_TEXT | HDI_FORMAT | HDI_ORDER;
        hditem1.pszText = buf1;
        hditem1.cchTextMax = 255;
        GetItem(i, &hditem1);

        GetItemRect(i, &rect);

        CBitmap *pOldBitmap = NULL;

        // make sure we draw the start piece
        // on the first item so it has a left border

        // For the following items we will just use the
        // right border of the previous items as the left
        // border
        if (hditem1.iOrder == 0)
        {
            pOldBitmap = bitmapDC.SelectObject(&bitmap);
            memDC.BitBlt(rect.left, rect.top, 2, 12, &bitmapDC, 0, 0, SRCCOPY);
        }
        else
        {
            memDC.BitBlt(rect.left - 1, rect.top, 2, 12, &bitmapDC, 0, 0,
                SRCCOPY);
            pOldBitmap = bitmapDC.SelectObject(&bitmap2);
            memDC.BitBlt(rect.left + 1, rect.top, 1, 12, &bitmapDC, 0, 0,
                SRCCOPY);
        }

        bitmapDC.SelectObject(pOldBitmap);

        //span the bitmap for the width of the column header item
        int nWidth = rect.Width() - 4;

        CBitmap *pOldBitmap2 = bitmapDC.SelectObject(&bitmap2);

        memDC.StretchBlt(rect.left + 2, 0, nWidth, 1, &bitmapDC, 0, 0, 1, 12,
            SRCCOPY);

        bitmapDC.SelectObject(pOldBitmap2);


        //draw the end piece of the column header
        CBitmap *pOldBitmap3 = bitmapDC.SelectObject(&bitmap3);
        memDC.BitBlt((rect.right - 2), 0, 2, 12, &bitmapDC, 0, 0, SRCCOPY);
        bitmapDC.SelectObject(pOldBitmap3);

        //Get all the info for the current
        //item so we can draw the text to it
        //in the desired font and style
        DRAWITEMSTRUCT DrawItemStruct;
        GetItemRect(i, &rectItem);


        DrawItemStruct.CtlType = 100;
        DrawItemStruct.hDC = dc.GetSafeHdc();
        DrawItemStruct.itemAction = ODA_DRAWENTIRE;
        DrawItemStruct.hwndItem = GetSafeHwnd();
        DrawItemStruct.rcItem = rectItem;
        DrawItemStruct.itemID = i;
        DrawItem(&DrawItemStruct);

        UINT uFormat = DT_SINGLELINE | DT_NOPREFIX | DT_TOP | DT_CENTER |
            DT_END_ELLIPSIS;


        CFont font;
        LOGFONT lf;
        memset(&lf, 0, sizeof(LOGFONT));
        lf.lfHeight = 8;
        strcpy((char*)lf.lfFaceName, "Sevenet 7");
        font.CreateFontIndirect(&lf);
        CFont *def_font = memDC.SelectObject(&font);

        memDC.SetBkMode(TRANSPARENT);
        rectItem.DeflateRect(2, 2, 2, 2);

        TCHAR buf[256];
        HD_ITEM hditem;

        hditem.mask = HDI_TEXT | HDI_FORMAT | HDI_ORDER;
        hditem.pszText = buf;
        hditem.cchTextMax = 255;
        GetItem(DrawItemStruct.itemID, &hditem);

        memDC.DrawText(buf, &rectItem, uFormat);
        memDC.SelectObject(def_font);
        font.DeleteObject();
    }
}

BOOL CSkinHeaderCtrl::OnEraseBkgnd(CDC *pDC)
{
    return false;
}