pixelfusionview.cpp

本程序采用Visual C++6.0对全色图像和多光谱遥感图像进行了基于相关系数的图像融合

// PixelFusionView.cpp : implementation of the CPixelFusionView class
//

#include "stdafx.h"
#include "PixelFusion.h"

#include "PixelFusionDoc.h"
#include "PixelFusionView.h"

#include "dibapi.h"

#include "DlgOpenFile.h"

/*
 * Dib文件头标志（字符串"BM"，写DIB时用到该常数）
 */
#define DIB_HEADER_MARKER   ((WORD) ('M' << 8) | 'B')
#define WIDTHBYTES(bits)    (((bits) + 31) / 32 * 4)
#include "math.h"

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

/////////////////////////////////////////////////////////////////////////////
// CPixelFusionView

IMPLEMENT_DYNCREATE(CPixelFusionView, CScrollView)

BEGIN_MESSAGE_MAP(CPixelFusionView, CScrollView)
	//{{AFX_MSG_MAP(CPixelFusionView)
	//}}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)
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CPixelFusionView construction/destruction

CPixelFusionView::CPixelFusionView()
{
	// TODO: add construction code here

}

CPixelFusionView::~CPixelFusionView()
{
}

BOOL CPixelFusionView::PreCreateWindow(CREATESTRUCT& cs)
{
	// TODO: Modify the Window class or styles here by modifying
	//  the CREATESTRUCT cs

	return CScrollView::PreCreateWindow(cs);
}

/////////////////////////////////////////////////////////////////////////////
// CPixelFusionView drawing

void CPixelFusionView::OnDraw(CDC* pDC)
{
	CPixelFusionDoc* pDoc = GetDocument();
	ASSERT_VALID(pDoc);

	HDIB hDIB = pDoc->GetHDIB();

	// TODO: add draw code for native data here
	// 判断DIB是否为空
	if (hDIB != NULL)
	{
		LPSTR lpDIB = (LPSTR) ::GlobalLock((HGLOBAL) hDIB);
		
		// 获取DIB宽度
		int cxDIB = (int) ::DIBWidth(lpDIB);
		
		// 获取DIB高度
		int cyDIB = (int) ::DIBHeight(lpDIB);

		::GlobalUnlock((HGLOBAL) hDIB);
		
		CRect rcDIB;
		rcDIB.top = rcDIB.left = 0;
		rcDIB.right = cxDIB;
		rcDIB.bottom = cyDIB;
		
		CRect rcDest;
		
		// 判断是否是打印
		if (pDC->IsPrinting())
		{
			// 是打印，计算输出图像的位置和大小，以便符合页面
			
			// 获取打印页面的水平宽度(象素)
			int cxPage = pDC->GetDeviceCaps(HORZRES);
			
			// 获取打印页面的垂直高度(象素)
			int cyPage = pDC->GetDeviceCaps(VERTRES);
			
			// 获取打印机每英寸象素数
			int cxInch = pDC->GetDeviceCaps(LOGPIXELSX);
			int cyInch = pDC->GetDeviceCaps(LOGPIXELSY);
			
			// 计算打印图像大小（缩放，根据页面宽度调整图像大小）
			rcDest.top = rcDest.left = 0;
			rcDest.bottom = (int)(((double)cyDIB * cxPage * cyInch)
					/ ((double)cxDIB * cxInch));
			rcDest.right = cxPage;
			
			// 计算打印图像位置（垂直居中）
			int temp = cyPage - (rcDest.bottom - rcDest.top);
			rcDest.bottom += temp/2;
			rcDest.top += temp/2;

		}
		else   
		// 非打印
		{
			// 不必缩放图像
			rcDest = rcDIB;
		}
		
		// 输出DIB
		::PaintDIB(pDC->m_hDC, &rcDest, pDoc->GetHDIB(),
			&rcDIB, pDoc->m_palDIB);
	}
}

/////////////////////////////////////////////////////////////////////////////
// CPixelFusionView printing

BOOL CPixelFusionView::OnPreparePrinting(CPrintInfo* pInfo)
{
	// default preparation
	return DoPreparePrinting(pInfo);
}

void CPixelFusionView::OnBeginPrinting(CDC* /*pDC*/, CPrintInfo* /*pInfo*/)
{
	// TODO: add extra initialization before printing
}

void CPixelFusionView::OnEndPrinting(CDC* /*pDC*/, CPrintInfo* /*pInfo*/)
{
	// TODO: add cleanup after printing
}

/////////////////////////////////////////////////////////////////////////////
// CPixelFusionView diagnostics

#ifdef _DEBUG
void CPixelFusionView::AssertValid() const
{
	CScrollView::AssertValid();
}

void CPixelFusionView::Dump(CDumpContext& dc) const
{
	CScrollView::Dump(dc);
}

CPixelFusionDoc* CPixelFusionView::GetDocument() // non-debug version is inline
{
	ASSERT(m_pDocument->IsKindOf(RUNTIME_CLASS(CPixelFusionDoc)));
	return (CPixelFusionDoc*)m_pDocument;
}
#endif //_DEBUG

/////////////////////////////////////////////////////////////////////////////
// CPixelFusionView message handlers

void CPixelFusionView::OnInitialUpdate() 
{
	CScrollView::OnInitialUpdate();

	CPixelFusionDoc* pDoc = GetDocument();
	ASSERT_VALID(pDoc);

	// 弹出输入配准图像的对话框
	pDoc->OpenFile();

	SetScrollSizes(MM_TEXT,GetDocument()->GetDocSize());
}