imageproview.cpp

这个是VC的源代码

// ImageProView.cpp : implementation of the CImageProView class
//

#include "stdafx.h"
#include "ImagePro.h"

#include "ImageProDoc.h"
#include "ImageProView.h"
#include "mask.h"

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

/////////////////////////////////////////////////////////////////////////////
// CImageProView

IMPLEMENT_DYNCREATE(CImageProView, CView)

BEGIN_MESSAGE_MAP(CImageProView, CView)
	//{{AFX_MSG_MAP(CImageProView)
	ON_COMMAND(ID_FILE_OPEN, OnFileOpen)
	ON_COMMAND(ID_HISTOGRAM, OnHistogram)
	ON_COMMAND(ID_SMOTH, OnSmoth)
	//}}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()

/////////////////////////////////////////////////////////////////////////////
// CImageProView construction/destruction

CImageProView::CImageProView()
{
	// TODO: add construction code here
	
	m_bHist=false;


}

CImageProView::~CImageProView()
{
}

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

	return CView::PreCreateWindow(cs);
}

/////////////////////////////////////////////////////////////////////////////
// CImageProView drawing

void CImageProView::OnDraw(CDC* pDC)
{
	CImageProDoc* pDoc = GetDocument();
	ASSERT_VALID(pDoc);
	// TODO: add draw code for native data here
	
	if(m_dib.m_bLoaded==true)
	{
		int nw=m_dib.GetDIBWidth();
		int nh=m_dib.GetDIBHeight();
		m_dib.ShowDIB(pDC,10,10,nw,nh,m_dib.m_pDIBData,m_dib.m_pBMI);
		m_dib.ShowDIB(pDC,400,10,nw,nh,m_dib.m_pDumpDIBData,m_dib.m_pBMI);
	}

	if(m_bHist==true)
	{
		//绘画直方图
		CString str;
		int nh=m_dib.GetDIBHeight();
		int i;
		
		//	画坐标轴
		
		// 绘制坐标轴
		pDC->MoveTo(10,nh+20);  //（10，nh+20 ）是直方图的左上角坐标 
	
		// 垂直轴
		pDC->LineTo(10,nh+200);//（10，nh+200 ）是直方图的左下角坐标 
	
		// 水平轴
		pDC->LineTo(310,nh+200);//（310，nh+200 ）是直方图的右下角坐标 
	
		// 写X轴刻度值
		str.Format("0");
		pDC->TextOut(10, nh+200+10, str);
		str.Format("50");
		pDC->TextOut(60, nh+200+10, str);
		str.Format("100");
		pDC->TextOut(110, nh+200+10, str);
		str.Format("150");
		pDC->TextOut(160, nh+200+10, str);
		str.Format("200");
		pDC->TextOut(210, nh+200+10, str);
		str.Format("255");
		pDC->TextOut(265, nh+200+10, str);
	
		// 绘制X轴刻度
		for ( i = 0; i < 256; i += 25)
		{
			if ((i & 1) == 0)
			{
				// 10的倍数
				pDC->MoveTo(i + 10, nh+200-2);
				pDC->LineTo(i + 10, nh+200+2);
			}
			else
			{
				// 10的倍数
				pDC->MoveTo(i + 10, nh+200-2);
				pDC->LineTo(i + 10, nh+200+2);
			}
		}

		// 绘制X轴箭头
		pDC->MoveTo(305,nh+200-5);
		pDC->LineTo(310,nh+200);
		pDC->LineTo(305,nh+200+5);

		// 绘制y轴箭头
		pDC->MoveTo(10,nh+20);
		pDC->LineTo(5,nh+20+5);
		pDC->MoveTo(10,nh+20);
		pDC->LineTo(15,nh+20+5);

		


		int max=0;
		for(i=0;i<256;i++)
			if(m_hist[i]>max)
				max=m_hist[i];

	//	str.Format("d%",max);
		
	//	pDC->TextOut(12, nh+200-170, str);
		// 蓝色画笔
	//	CPen *pPenBlue;
		//pPenBlue->CreatePen(PS_SOLID,1,RGB(0,0, 255));
		//CGdiObject* pOldPen = pDC->SelectObject(pPenBlue);
		
		for(i=0;i<256;i++)
		{
			pDC->MoveTo(10+i,nh+200);
			pDC->LineTo(10+i,nh+200-(m_hist[i]*160/max));

		}

	//	delete pPenGray;
	//	delete pPenBlue;
		//pDC->SelectObject(pOldPen);








	}
}

/////////////////////////////////////////////////////////////////////////////
// CImageProView printing

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

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

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

/////////////////////////////////////////////////////////////////////////////
// CImageProView diagnostics

#ifdef _DEBUG
void CImageProView::AssertValid() const
{
	CView::AssertValid();
}

void CImageProView::Dump(CDumpContext& dc) const
{
	CView::Dump(dc);
}

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

/////////////////////////////////////////////////////////////////////////////
// CImageProView message handlers

void CImageProView::OnFileOpen() 
{
	// TODO: Add your command handler code here
	static char szFilter[]="BMP文件(*.bmp)|*.bmp||";
	CFileDialog dlg(TRUE,"bmp",NULL,
					OFN_HIDEREADONLY|OFN_OVERWRITEPROMPT,szFilter);
	CString filename;

	int ret=dlg.DoModal();
	if(ret==IDOK)
	{		
		filename=dlg.GetFileName();
		m_dib.LoadFromFile(filename);
		if(!m_dib.m_bLoaded)
		{
			AfxMessageBox("图像打不开");
			return;
		}

		for(int i=0;i<256;i++)  //初始化直方图数组
		m_hist[i]=0;
		m_bHist=false;
	}
	Invalidate(1);	
}

void CImageProView::OnHistogram() 
{
	// TODO: Add your command handler code here

	if(m_dib.m_bLoaded!=true)
	{
		AfxMessageBox("要处理的图像文件没打开");
		return;
	}

	int i,j;
	BYTE* pdata=m_dib.m_pdata;
	int nh=m_dib.GetDIBHeight();
	int nw=m_dib.GetDIBWidth();

	for(i=0;i<256;i++)  //初始化直方图数组
		m_hist[i]=0;

	if( m_dib.m_nImType==24)
	{	
		for(j=0;j<nh;j++)
			for(i=0;i<nw;i++)
			{
				BYTE temp=pdata[j*nw+i];
				m_hist[temp]++;
			}
	}
	m_bHist=true;
	Invalidate(1);
	
}

void CImageProView::OnSmoth() 
{
	// TODO: Add your command handler code here

	//均值滤波；

	if(m_dib.m_bLoaded!=true)
	{
		AfxMessageBox("要处理的图像文件没打开");
		return;
	}

	int i,j;
	BYTE* pdata=m_dib.m_pdata;
	int nh=m_dib.GetDIBHeight();
	int nw=m_dib.GetDIBWidth();

	if( m_dib.m_nImType==24)  //目前仅仅对24位bmp图进行
	{

		Mask dlg;
		int ret=dlg.DoModal();
		if(ret==IDOK)
		{
			//从对话框中获取相关的模板运算的信息
			int* mask=dlg.mask;                //模板指针
			int mask_width=dlg.m_width;  // 模板大小
			float mask_coef=dlg.m_coef;    //模板的系数

			int wid=(mask_width-1)/2;      //计算运算的边界
			
			BYTE* temp=new BYTE[nh*nw];  //开辟临时内存
			memcpy(temp,m_dib.m_pdata,nh*nw);

			for(j=wid;j<nh-wid;j++)  //row
				for(i=wid;i<nw-wid;i++) //col
				{
					int amount=0;
					for(int k=-wid;k<=wid;k++)
						for(int l=-wid;l<=wid;l++)
							amount+=temp[(j+k)*nw+i+l]*mask[(k+wid)*mask_width+l+wid];
					
					amount=int(amount*mask_coef);
					if(amount<0)
						amount=0;
					if(amount>255)
						amount=255;
					pdata[j*nw+i]=BYTE(amount);
				}
			m_dib.InvalidateData();
			delete temp;
			Invalidate(1);
		}
	}
		
}

int CImageProView::abs(int a, int b)
{
 return 0;
}