www.pudn.com > viewImage.rar > ViewDIBView.cpp

// ViewDIBView.cpp : implementation of the CViewDIBView class 
// 
 
#include "stdafx.h" 
#include "ViewDIB.h" 
#include "MainFrm.h" 
#include "Dib.h" 
 
#include "ViewDIBDoc.h" 
#include "ViewDIBView.h" 
 
#ifdef _DEBUG 
#define new DEBUG_NEW 
#undef THIS_FILE 
static char THIS_FILE[] = __FILE__; 
#endif 
 
///////////////////////////////////////////////////////////////////////////// 
// CViewDIBView 
 
IMPLEMENT_DYNCREATE(CViewDIBView, CScrollView) 
 
BEGIN_MESSAGE_MAP(CViewDIBView, CScrollView) 
	//{{AFX_MSG_MAP(CViewDIBView) 
		// 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, CScrollView::OnFilePrint) 
	ON_COMMAND(ID_FILE_PRINT_DIRECT, CScrollView::OnFilePrint) 
	ON_COMMAND(ID_FILE_PRINT_PREVIEW, CScrollView::OnFilePrintPreview) 
	ON_MESSAGE(WM_REALIZEPAL, OnRealizePal) 
END_MESSAGE_MAP() 
 
///////////////////////////////////////////////////////////////////////////// 
// CViewDIBView construction/destruction 
 
CViewDIBView::CViewDIBView() 
{ 
	// TODO: add construction code here 
 
} 
 
CViewDIBView::~CViewDIBView() 
{ 
} 
 
BOOL CViewDIBView::PreCreateWindow(CREATESTRUCT& cs) 
{ 
	// TODO: Modify the Window class or styles here by modifying 
	//  the CREATESTRUCT cs 
 
	return CScrollView::PreCreateWindow(cs); 
} 
 
///////////////////////////////////////////////////////////////////////////// 
// CViewDIBView drawing 
 
void CViewDIBView::OnDraw(CDC* pDC) 
{ 
	CViewDIBDoc* pDoc = GetDocument(); 
	ASSERT_VALID(pDoc); 
	if (! pDoc->m_pDib->IsEmpty()) 
		pDoc->m_pDib->Display(pDC, 0, 0); 
} 
 
void CViewDIBView::OnInitialUpdate() 
{ 
	CScrollView::OnInitialUpdate(); 
	CViewDIBDoc* pDoc = GetDocument(); 
 
	CSize sizeTotal(pDoc->m_pDib->GetWidth(), pDoc->m_pDib->GetHeight()); 
	SetScrollSizes(MM_TEXT, sizeTotal); 
	 
	CMainFrame* pAppFrame = (CMainFrame*) AfxGetApp()->m_pMainWnd; 
	ASSERT_KINDOF(CMainFrame, pAppFrame); 
	CRect rc; 
	pAppFrame->GetClientRect(&rc); 
	if (rc.Width() >= sizeTotal.cx && rc.Height() >= sizeTotal.cy && 
		(sizeTotal.cx>0 || sizeTotal.cy>0)) 
		ResizeParentToFit(FALSE); 
} 
 
///////////////////////////////////////////////////////////////////////////// 
// CViewDIBView printing 
 
BOOL CViewDIBView::OnPreparePrinting(CPrintInfo* pInfo) 
{ 
	// default preparation 
	return DoPreparePrinting(pInfo); 
} 
 
void CViewDIBView::OnBeginPrinting(CDC* /*pDC*/, CPrintInfo* /*pInfo*/) 
{ 
	// TODO: add extra initialization before printing 
} 
 
void CViewDIBView::OnEndPrinting(CDC* /*pDC*/, CPrintInfo* /*pInfo*/) 
{ 
	// TODO: add cleanup after printing 
} 
 
///////////////////////////////////////////////////////////////////////////// 
// CViewDIBView diagnostics 
 
#ifdef _DEBUG 
void CViewDIBView::AssertValid() const 
{ 
	CScrollView::AssertValid(); 
} 
 
void CViewDIBView::Dump(CDumpContext& dc) const 
{ 
	CScrollView::Dump(dc); 
} 
 
CViewDIBDoc* CViewDIBView::GetDocument() // non-debug version is inline 
{ 
	ASSERT(m_pDocument->IsKindOf(RUNTIME_CLASS(CViewDIBDoc))); 
	return (CViewDIBDoc*)m_pDocument; 
} 
#endif //_DEBUG 
 
///////////////////////////////////////////////////////////////////////////// 
// CViewDIBView message handlers 
 
void CViewDIBView::OnRealizePal(WPARAM wParam, LPARAM lParam) 
{ 
	ASSERT(wParam != NULL); 
	CViewDIBDoc* pDoc = GetDocument(); 
 
	if (pDoc->m_pDib->IsEmpty()) 
		return;  // must be a new document 
 
	CPalette* pPal = pDoc->m_pDib->GetPalette(); 
	if (pPal != NULL) 
	{ 
		CWnd* pAppFrame = AfxGetApp()->m_pMainWnd; 
 
		CClientDC appDC(pAppFrame); 
		// All views but one should be a background palette. 
		// wParam contains a handle to the active view, so the SelectPalette 
		// bForceBackground flag is FALSE only if wParam == m_hWnd (this view) 
		CPalette* oldPalette = appDC.SelectPalette(pPal, ((HWND)wParam) != m_hWnd); 
 
		if (oldPalette != NULL) 
		{ 
			UINT nColorsChanged = appDC.RealizePalette(); 
			if (nColorsChanged > 0) 
				GetDocument()->UpdateAllViews(NULL); 
			appDC.SelectPalette(oldPalette, TRUE); 
		} 
		else 
		{ 
			TRACE0("\tSelectPalette failed!\n"); 
		} 
	} 
}