histrogram.cpp

c语言实现的遥感图像处理的一些基本操作

// Histrogram.cpp : implementation file
//

#include "stdafx.h"
#include "RSImageStar.h"
#include "RSImageStarDoc.h"
#include "RSImageStarView.h"

#include "Histrogram.h"

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

/////////////////////////////////////////////////////////////////////////////
// CHistrogram dialog

extern CRSImageStarView *m_pView;

CHistrogram::CHistrogram(CWnd* pParent /*=NULL*/)
	: CDialog(CHistrogram::IDD, pParent)
{
	//{{AFX_DATA_INIT(CHistrogram)
	m_count1 = 0;
	m_count2 = 0;
	m_count3 = 0;
	m_count6 = 0.0f;
	m_count5 = 0;
	m_count4 = _T("");
	//}}AFX_DATA_INIT
	nCount=0;
	m_InRect= false;
	mStart  = false;
	nRedraw =true;
}


void CHistrogram::DoDataExchange(CDataExchange* pDX)
{
	CDialog::DoDataExchange(pDX);
	//{{AFX_DATA_MAP(CHistrogram)
	DDX_Control(pDX, IDC_BUTTON1, m_Bitmap);
	DDX_Control(pDX, IDC_COMBO1, m_ComboBox);
	DDX_Control(pDX, IDC_STATIC7, Histrog);
	DDX_Text(pDX, IDC_EDIT1, m_count1);
	DDX_Text(pDX, IDC_EDIT2, m_count2);
	DDX_Text(pDX, IDC_EDIT3, m_count3);
	DDX_Text(pDX, IDC_EDIT6, m_count6);
	DDX_Text(pDX, IDC_EDIT5, m_count5);
	DDX_Text(pDX, IDC_EDIT4, m_count4);
	//}}AFX_DATA_MAP
}


BEGIN_MESSAGE_MAP(CHistrogram, CDialog)
	//{{AFX_MSG_MAP(CHistrogram)
	ON_WM_LBUTTONDOWN()
	ON_WM_MOUSEMOVE()
	ON_WM_LBUTTONUP()
	ON_CBN_SELCHANGE(IDC_COMBO1, OnSelchangeCombo1)
	ON_WM_PAINT()
	//}}AFX_MSG_MAP
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CHistrogram message handlers

BOOL CHistrogram::OnInitDialog() 
{
	CDialog::OnInitDialog();
    
	// TODO: Add extra initialization here
	Histrog.GetWindowRect(rect);
    ScreenToClient(&rect);
	m_Bitmap.GetWindowRect(RectMap);
	ScreenToClient(&RectMap);

	if((m_pView->m_pDoc->curptr->dib->filetype==6)||(m_pView->m_pDoc->curptr->dib->filetype==5))
	{
		m_ComboBox.SetWindowText("红色");
		m_ComboBox.AddString("红色");
		m_ComboBox.AddString("绿色");
		m_ComboBox.AddString("蓝色");

	}
	else
	{
		m_ComboBox.SetWindowText("亮度");
		m_ComboBox.AddString("亮度");
	}
   
    m_Cross =  AfxGetApp()->LoadCursor(IDC_CURSORCROSS);
    m_count1=m_pView->m_pDoc->curptr->dib->MeanRed;
	m_count2=m_pView->m_pDoc->curptr->dib->DevRed;
    m_count3=m_pView->m_pDoc->size.cx*m_pView->m_pDoc->size.cy;
	UpdateData(FALSE);
	return TRUE;  // return TRUE unless you set the focus to a control
	              // EXCEPTION: OCX Property Pages should return FALSE
}

void CHistrogram::OnLButtonDown(UINT nFlags, CPoint point) 
{
	// TODO: Add your message handler code here and/or call default
	if((rect.PtInRect(point))&&(!m_InRect))
	{
		SetCursor( m_Cross);
        SetCapture();
		CClientDC dc(this);
		int nOldRop = dc.SetROP2(R2_NOT);
		dc.MoveTo(point.x,rect.top);
        dc.LineTo(point.x,rect.bottom);
		dc.SetROP2(nOldRop);
		m_InRect=true;
		startpoint=point;
	}
	CDialog::OnLButtonDown(nFlags, point);
}

void CHistrogram::OnMouseMove(UINT nFlags, CPoint point) 
{
	// TODO: Add your message handler code here and/or call default
	if((m_InRect))//&&(rect.PtInRect(point)))
	{
		CClientDC dc(this);
		int nOldRop = dc.SetROP2(R2_NOT);
		if(mStart)
          dc.Rectangle(rect1);
		mStart=true;
		if(startpoint.x<point.x)
		{
			rect1.left = startpoint.x;
			rect1.right= point.x;
		}
		else
		{
			rect1.left = point.x;
			rect1.right= startpoint.x;
		}
		rect1.top=rect.top;
		rect1.bottom=rect.bottom;

		int m=int((rect1.left-rect.left)*256.0/rect.Width()+0.5);
		if(m<0)
		{
			m=0;
			rect1.left=rect.left;
		}
		int n=int((rect1.right-rect.left)*256.0/rect.Width()+0.5);
		if(n>255)
		{
			n=255;
			rect1.right=rect.right;
		}
        dc.Rectangle(rect1);
		dc.SetROP2(nOldRop);
		m_count5=0;
		int i;
		switch(nCount)
		{
		    case 0:
				for(i=m;i<=n;i++)
					m_count5+=m_pView->m_pDoc->curptr->dib->nRedChannel[i];
				break;
		    case 1:
				for(i=m;i<=n;i++)
					m_count5+=m_pView->m_pDoc->curptr->dib->nGreenChannel[i];
				break;
		    case 2:
				for(i=m;i<=n;i++)
					m_count5+=m_pView->m_pDoc->curptr->dib->nBlueChannel[i];
				break;
		    default:
				break;
		}
		m_count4.Format("%d.%d",m,n);
		m_count6=float(m_count5)/m_count3;
		UpdateData(FALSE);
	}
	else if(rect.PtInRect(point))
	{
		SetCursor( m_Cross);
		int m=int((point.x-rect.left)*256.0/rect.Width()+0.5);
		m_count5=0;
		switch(nCount)
		{
		    case 0:
		      m_count5=m_pView->m_pDoc->curptr->dib->nRedChannel[m];
			  break;
		    case 1:
		      m_count5=m_pView->m_pDoc->curptr->dib->nGreenChannel[m];
			  break;
		    case 2:
		      m_count5=m_pView->m_pDoc->curptr->dib->nBlueChannel[m];
			  break;
			default:
				break;
		}
		m_count4.Format("%d",m);
		m_count6=float(m_count5)/m_count3;
		UpdateData(FALSE);
	}
	CDialog::OnMouseMove(nFlags, point);
}

void CHistrogram::OnLButtonUp(UINT nFlags, CPoint point) 
{
	// TODO: Add your message handler code here and/or call default
	m_InRect=false;
	mStart=false;
	if(rect.PtInRect(point))
	   SetCursor(m_Cross);
//	InvalidateRect(rect,true);
	m_count4.Empty();
    m_count5=0;
	m_count6=0;
	UpdateData(FALSE);
    ReleaseCapture();
	CDialog::OnLButtonUp(nFlags, point);
}

void CHistrogram::OnSelchangeCombo1() 
{
	// TODO: Add your control notification handler code here
	nCount=m_ComboBox.GetCurSel();
    Histrog.nChannel=nCount;
	switch(nCount)
	{
	     case 0:
			 m_count1=m_pView->m_pDoc->curptr->dib->MeanRed;
			 m_count2=m_pView->m_pDoc->curptr->dib->DevRed;

             break;
		 case 1:
			 m_count1=m_pView->m_pDoc->curptr->dib->MeanGreen;
			 m_count2=m_pView->m_pDoc->curptr->dib->DevGreen;
             
			 break;
		 case 2:
			 m_count1=m_pView->m_pDoc->curptr->dib->MeanBlue;
			 m_count2=m_pView->m_pDoc->curptr->dib->DevBlue;
             break;
		 default:
			 break;

	}
	nRedraw=true;
	UpdateData(FALSE);
	Invalidate();
}

void CHistrogram::OnPaint() 
{
	CPaintDC dc(this); // device context for painting
	
	// TODO: Add your message handler code here
 	if(nRedraw)
	{
		CPen pen(PS_SOLID, 1, RGB(0,0,0));
		CPen *pOldpen;
		pOldpen=dc.SelectObject(&pen);
		
		int i;
		float scale,color;
		scale=float(2.0*256/RectMap.Width());
		color=0;
		if((m_pView->m_pDoc->curptr->dib->filetype==6)||(m_pView->m_pDoc->curptr->dib->filetype==5))
		switch(nCount)
		{
			case 0:
				for(i=RectMap.left;i<RectMap.right;i+=2)
				{
					CPen pen1(PS_SOLID, 1, RGB(int(color+0.5),0,0));
					dc.SelectObject(&pen1);	
					dc.Rectangle(i,RectMap.top,i+2,RectMap.bottom);
					color+=scale;
				}
				break;
			case 1:
				for(i=RectMap.left;i<RectMap.right;i+=2)
				{
					CPen pen1(PS_SOLID, 1, RGB(0,int(color+0.5),0));
					dc.SelectObject(&pen1);	
					dc.Rectangle(i,RectMap.top,i+2,RectMap.bottom);
					color+=scale;
				}
				break;
			case 2:
				for(i=RectMap.left;i<RectMap.right;i+=2)
				{
					CPen pen1(PS_SOLID, 1, RGB(0,0,int(color+0.5)));
					dc.SelectObject(&pen1);	
					dc.Rectangle(i,RectMap.top,i+2,RectMap.bottom);
					color+=scale;
				}
				break;
			default:
				break;
		}
		else
		{
			for(i=RectMap.left;i<RectMap.right;i+=2)
			{
				CPen pen1(PS_SOLID, 1, RGB(int(color+0.5),int(color+0.5),int(color+0.5)));
				dc.SelectObject(&pen1);	
				dc.Rectangle(i,RectMap.top,i+2,RectMap.bottom);
				color+=scale;
			}
		}
		dc.SelectObject(pOldpen);
		nRedraw=false;
	}
	// Do not call CDialog::OnPaint() for painting messages
}