商业编程-源码-多层图像合成示例代码.zip

// CTestSelDrawPicView.cpp : implementation of the CCTestSelDrawPicView class // #include "stdafx.h" #include "CTestSelDrawPic.h" #include "CTestSelDrawPicDoc.h" #include "CTestSelDrawPicView.h" #ifdef _DEBUG #define new DEBUG_NEW #undef THIS_FILE static char THIS_FILE[] = __FILE__; #endif ///////////////////////////////////////////////////////////////////////////// // CCTestSelDrawPicView IMPLEMENT_DYNCREATE(CCTestSelDrawPicView, CView) BEGIN_MESSAGE_MAP(CCTestSelDrawPicView, CView) //{{AFX_MSG_MAP(CCTestSelDrawPicView) // NOTE - the ClassWizard will add and remove mapping macros here. // DO NOT EDIT what you see in these blocks of generated code! //}}AFX_MSG_MAP // Standard printing commands ON_COMMAND(ID_FILE_PRINT, CView::OnFilePrint) ON_COMMAND(ID_FILE_PRINT_DIRECT, CView::OnFilePrint) ON_COMMAND(ID_FILE_PRINT_PREVIEW, CView::OnFilePrintPreview) END_MESSAGE_MAP() ///////////////////////////////////////////////////////////////////////////// // CCTestSelDrawPicView construction/destruction CCTestSelDrawPicView::CCTestSelDrawPicView() { // TODO: add construction code here } CCTestSelDrawPicView::~CCTestSelDrawPicView() { } BOOL CCTestSelDrawPicView::PreCreateWindow(CREATESTRUCT& cs) { // TODO: Modify the Window class or styles here by modifying // the CREATESTRUCT cs return CView::PreCreateWindow(cs); } ///////////////////////////////////////////////////////////////////////////// // CCTestSelDrawPicView drawing void CCTestSelDrawPicView::OnDraw(CDC* pDC) { CCTestSelDrawPicDoc* pDoc = GetDocument(); ASSERT_VALID(pDoc); // TODO: add draw code for native data here CBitmap* poldBk=m_dcBk.SelectObject(&m_bmpBk); //选入背景图 CBitmap* poldFore=m_dcFore.SelectObject(&m_bmpFore); CRect rect; GetClientRect(&rect); //得到客户区矩形 CDC maskDc; //创建设备环境maskDc CBitmap maskBitmap; maskDc.CreateCompatibleDC(pDC); //创建与当前设备相兼容的设备 maskBitmap.CreateBitmap(rect.Width(),rect.Height(),1,1,NULL ); //创建一个单色图 CBitmap* pOldMaskDCBitmap = maskDc.SelectObject( &maskBitmap ); //选入单色图 CBrush brush(RGB(255,255,255)); // CBrush brush(RGB(134,112,124)); CBrush * oldbrush; oldbrush=maskDc.SelectObject(&brush); maskDc.FillRect(&rect,&brush); //取得要消除的背景色值 COLORREF clrTrans= m_dcFore.GetPixel(2, 2); // 设置前景图的背景色 COLORREF clrSaveBk = m_dcFore.SetBkColor(clrTrans); //将前景图拷贝到maskDc maskDc.BitBlt(0,0,rect.Width(),rect.Height(), &m_dcFore, 0,0,SRCCOPY); // pDC->BitBlt(0,0,rect.Width(), rect.Height(),&maskDc,0,0,SRCCOPY); //前景图与mask做‘与’运算 m_dcFore.SetBkColor(RGB(0,0,0)); m_dcFore.SetTextColor(RGB(255,255,255)); m_dcFore.BitBlt(0,0,rect.Width(), rect.Height(),&maskDc,0,0,SRCAND); // pDC->BitBlt(0,0,rect.Width(), rect.Height(),&m_dcFore,0,0,SRCCOPY); //背景图与mask做‘与’运算 m_dcBk.SetBkColor(RGB(255,255,255)); m_dcBk.SetTextColor(RGB(0,0,0)); m_dcBk.BitBlt(0,0,rect.Width(),rect.Height(),&maskDc,0,0,SRCAND); //背景图与前景图做‘或’运算 m_dcBk.BitBlt(rect.left,rect.top,rect.Width(),rect.Height(),&m_dcFore,0,0,SRCPAINT); // pDC->BitBlt(0,0,rect.Width(), rect.Height(),&m_dcBk,0,0,SRCCOPY); //将合成后的图像显示 pDC->BitBlt(0,0,rect.Width(),rect.Height(),&m_dcBk,0,0,SRCCOPY); pDC->SelectObject(oldbrush); m_dcBk.SelectObject(poldBk); m_dcFore.SelectObject(poldFore); } ///////////////////////////////////////////////////////////////////////////// // CCTestSelDrawPicView printing BOOL CCTestSelDrawPicView::OnPreparePrinting(CPrintInfo* pInfo) { // default preparation return DoPreparePrinting(pInfo); } void CCTestSelDrawPicView::OnBeginPrinting(CDC* /*pDC*/, CPrintInfo* /*pInfo*/) { // TODO: add extra initialization before printing } void CCTestSelDrawPicView::OnEndPrinting(CDC* /*pDC*/, CPrintInfo* /*pInfo*/) { // TODO: add cleanup after printing } ///////////////////////////////////////////////////////////////////////////// // CCTestSelDrawPicView diagnostics #ifdef _DEBUG void CCTestSelDrawPicView::AssertValid() const { CView::AssertValid(); } void CCTestSelDrawPicView::Dump(CDumpContext& dc) const { CView::Dump(dc); } CCTestSelDrawPicDoc* CCTestSelDrawPicView::GetDocument() // non-debug version is inline { ASSERT(m_pDocument->IsKindOf(RUNTIME_CLASS(CCTestSelDrawPicDoc))); return (CCTestSelDrawPicDoc*)m_pDocument; } #endif //_DEBUG ///////////////////////////////////////////////////////////////////////////// // CCTestSelDrawPicView message handlers void CCTestSelDrawPicView::OnInitialUpdate() { CView::OnInitialUpdate(); // TODO: Add your specialized code here and/or call the base class m_bmpBk.LoadBitmap(IDB_BK); //将背景图载入 m_bmpFore.LoadBitmap(IDB_FORE); //将前景图载入 CClientDC dc(this); //获得当前客户区设备环境 m_dcBk.CreateCompatibleDC(&dc); //创建与当前设备相兼容的设备 m_dcFore.CreateCompatibleDC(&dc); }