www.pudn.com > ImgSeg.rar > DlgIntensity.cpp

// DlgIntensity.cpp : implementation file 
// 
 
#include "stdafx.h" 
#include "ImgSeg.h" 
#include "DlgIntensity.h" 
 
#ifdef _DEBUG 
#define new DEBUG_NEW 
#undef THIS_FILE 
static char THIS_FILE[] = __FILE__; 
#endif 
 
///////////////////////////////////////////////////////////////////////////// 
// CDlgIntensity dialog 
 
 
CDlgIntensity::CDlgIntensity(CWnd* pParent /*=NULL*/) 
	: CDialog(CDlgIntensity::IDD, pParent) 
{ 
	//{{AFX_DATA_INIT(CDlgIntensity) 
	m_iLowGray = 0; 
	m_iUpGray = 0; 
	//}}AFX_DATA_INIT 
} 
 
 
void CDlgIntensity::DoDataExchange(CDataExchange* pDX) 
{ 
	CDialog::DoDataExchange(pDX); 
	//{{AFX_DATA_MAP(CDlgIntensity) 
	DDX_Text(pDX, IDC_LOWGRAY, m_iLowGray); 
	DDV_MinMaxInt(pDX, m_iLowGray, 0, 255); 
	DDX_Text(pDX, IDC_UPGRAY, m_iUpGray); 
	DDV_MinMaxInt(pDX, m_iUpGray, 0, 255); 
	//}}AFX_DATA_MAP 
} 
 
 
BEGIN_MESSAGE_MAP(CDlgIntensity, CDialog) 
	//{{AFX_MSG_MAP(CDlgIntensity) 
	ON_BN_CLICKED(IDC_OK, OnOk) 
	ON_EN_CHANGE(IDC_LOWGRAY, OnChangeLowgray) 
	ON_EN_CHANGE(IDC_UPGRAY, OnChangeUpgray) 
	ON_WM_LBUTTONDOWN() 
	ON_WM_LBUTTONUP() 
	ON_WM_MOUSEMOVE() 
	ON_WM_PAINT() 
	//}}AFX_MSG_MAP 
END_MESSAGE_MAP() 
 
///////////////////////////////////////////////////////////////////////////// 
// CDlgIntensity message handlers 
 
void CDlgIntensity::OnOk()  
{ 
	// TODO: Add your control notification handler code here 
 
	// 判断是否下限超过上限 
	if (m_iLowGray > m_iUpGray) 
	{ 
		// 互换 
		int iTemp = m_iLowGray; 
		m_iLowGray = m_iUpGray; 
		m_iUpGray = iTemp; 
	} 
	 
	// 返回 
	CDialog::OnOK(); 
	 
} 
 
BOOL CDlgIntensity::OnInitDialog()  
{ 
	CDialog::OnInitDialog(); 
	 
	// TODO: Add extra initialization here 
 
	//指向原图像象素的指针 
	unsigned char *lpSrc; 
 
	//循环变量 
	LONG i; 
	LONG j; 
 
	CDialog::OnInitDialog(); 
	 
	// TODO: Add extra initialization here 
 
	//////////////////////////// 
	// 我的代码开始 
	//////////////////////////// 
 
	//获取绘制直方图的标签 
	CWnd* pWnd=GetDlgItem(IDC_COORD); 
	//计算接受鼠标事件的有效区域 
	pWnd->GetClientRect(m_MouseRect); 
	pWnd->ClientToScreen(&m_MouseRect); 
 
    //设置接受鼠标事件的有效区域 
	m_MouseRect.top-=35; 
	m_MouseRect.left+=7; 
	m_MouseRect.bottom=m_MouseRect.top+260; 
	m_MouseRect.right=m_MouseRect.left+256; 
 
	//置计数为0 
	for(i=0;i<256;i++) 
	{ 
		//清零 
		m_lGrayCount[i]=0; 
	} 
 
	//图像每行的字节数 
	LONG lLineBytes; 
 
	//计算图像每行的字节数 
	lLineBytes=m_lWidth+m_lWidth%4; 
 
	//计算各个灰度值的计数 
	for(i=0;i m_iUpGray) 
	{ 
		// 互换 
		int iTemp = m_iLowGray; 
		m_iLowGray = m_iUpGray; 
		m_iUpGray = iTemp; 
		 
		// 更新（成员变量中数值保存到控件中） 
		UpdateData(FALSE); 
	} 
	 
	// 重绘直方图 
	InvalidateRect(m_MouseRect, TRUE);	 
} 
 
void CDlgIntensity::OnChangeUpgray()  
{ 
	// TODO: If this is a RICHEDIT control, the control will not 
	// send this notification unless you override the CDialog::OnInitDialog() 
	// function and call CRichEditCtrl().SetEventMask() 
	// with the ENM_CHANGE flag ORed into the mask. 
	 
	// TODO: Add your control notification handler code here 
 
	// 保存变动 
	UpdateData(TRUE); 
	 
	// 判断是否下限超过上限 
	if (m_iLowGray > m_iUpGray) 
	{ 
		// 互换 
		int iTemp = m_iLowGray; 
		m_iLowGray = m_iUpGray; 
		m_iUpGray = iTemp; 
		 
		// 更新 
		UpdateData(FALSE); 
	} 
	 
	// 重绘直方图 
	InvalidateRect(m_MouseRect, TRUE);	 
} 
 
void CDlgIntensity::OnLButtonDown(UINT nFlags, CPoint point)  
{ 
	// TODO: Add your message handler code here and/or call default 
 
	// 当用户单击鼠标左键开始拖动 
	 
	// 判断是否在接受鼠标事件的有效区域中 
	if(m_MouseRect.PtInRect(point)) 
	{ 
		if (point.x-(m_MouseRect.left + m_iLowGray)==0) 
		{ 
			 
			// 设置拖动状态1，拖动下限 
			m_iIsDraging = 1; 
			 
			// 更改光标 
			::SetCursor(::LoadCursor(NULL, IDC_SIZEWE)); 
		} 
		else if (point.x-(m_MouseRect.left + m_iUpGray)==0) 
		{ 
			 
			// 设置拖动状态为2，拖动上限 
			m_iIsDraging = 2; 
			 
			// 更改光标 
			::SetCursor(::LoadCursor(NULL, IDC_SIZEWE)); 
		} 
	} 
	 
	CDialog::OnLButtonDown(nFlags, point); 
} 
 
void CDlgIntensity::OnMouseMove(UINT nFlags, CPoint point)  
{ 
	// TODO: Add your message handler code here and/or call default 
 
	// 判断是否在接受鼠标事件的有效区域中 
	if(m_MouseRect.PtInRect(point)) 
	{ 
		// 判断是否正在拖动 
		if (m_iIsDraging != 0) 
		{ 
			// 判断正在拖动上限还是下限 
			if (m_iIsDraging == 1) 
			{ 
				// 判断是否下限<上限 
				if (point.x - m_MouseRect.left < m_iUpGray) 
				{ 
					// 是，更改下限 
					m_iLowGray = point.x - m_MouseRect.left; 
				} 
				else 
				{ 
					// 下限拖过上限，设置为上限-1 
					m_iLowGray = m_iUpGray - 1; 
					 
					// 重设鼠标位置 
					point.x = m_MouseRect.left + m_iUpGray - 1; 
				} 
			} 
			else 
			{ 
				// 正在拖动上限 
				 
				// 判断是否上限>下限 
				if (point.x - m_MouseRect.left > m_iLowGray) 
				{ 
					// 更改上限 
					m_iUpGray = point.x - m_MouseRect.left; 
				} 
				else 
				{ 
					// 上限拖过下限，设置为下限＋1 
					m_iUpGray = m_iLowGray + 1; 
					 
					// 重设鼠标位置 
					point.x = m_MouseRect.left + m_iLowGray + 1; 
				} 
			} 
			 
			// 更改光标 
			::SetCursor(::LoadCursor(NULL, IDC_SIZEWE)); 
			 
			// 更新 
			UpdateData(FALSE); 
			 
			// 重绘直方图 
			InvalidateRect(m_MouseRect, TRUE); 
		} 
		else if (point.x == (m_MouseRect.left + m_iLowGray) || point.x == (m_MouseRect.left + m_iUpGray)) 
		{ 
			// 更改光标 
			::SetCursor(::LoadCursor(NULL, IDC_SIZEWE)); 
		} 
	} 
	 
	CDialog::OnMouseMove(nFlags, point); 
} 
 
void CDlgIntensity::OnLButtonUp(UINT nFlags, CPoint point)  
{ 
	// TODO: Add your message handler code here and/or call default 
 
	// 当用户释放鼠标左键停止拖动 
	if (m_iIsDraging != 0) 
	{ 
		// 重置拖动状态 
		m_iIsDraging = 0; 
	} 
	 
	CDialog::OnLButtonUp(nFlags, point); 
} 
 
void CDlgIntensity::OnPaint()  
{ 
	CPaintDC dc(this); // device context for painting 
	 
	// TODO: Add your message handler code here 
 
	// 字符串 
	CString str; 
	 
	// 循环变量 
	LONG i; 
	 
	// 最大计数 
	LONG lMaxCount = 0; 
	 
	// 获取绘制坐标的文本框 
	CWnd* pWnd = GetDlgItem(IDC_COORD); 
	 
	// 指针 
	CDC* pDC = pWnd->GetDC(); 
	pWnd->Invalidate(); 
	pWnd->UpdateWindow(); 
	 
	pDC->Rectangle(0,0,330,300); 
	 
	// 创建画笔对象 
	CPen* pPenRed = new CPen; 
	 
	// 红色画笔 
	pPenRed->CreatePen(PS_SOLID,1,RGB(255,0,0)); 
	 
	// 创建画笔对象 
	CPen* pPenBlack=new CPen; 
	 
	// 黑色画笔 
	pPenBlack->CreatePen(PS_SOLID,1,RGB(0,0,0)); 
	 
	CGdiObject* pOldPen=pDC->SelectObject(pPenBlack); 
	 
	// 绘制坐标轴 
	pDC->MoveTo(10,10); 
	 
	// 垂直轴 
	pDC->LineTo(10,280); 
	 
	// 水平轴 
	pDC->LineTo(310,280); 
	 
	// 写X轴刻度值 
	str.Format("0"); 
	pDC->TextOut(10, 283, str); 
	str.Format("50"); 
	pDC->TextOut(60, 283, str); 
	str.Format("100"); 
	pDC->TextOut(110, 283, str); 
	str.Format("150"); 
	pDC->TextOut(160, 283, str); 
	str.Format("200"); 
	pDC->TextOut(210, 283, str); 
	str.Format("255"); 
	pDC->TextOut(260, 283, str); 
	 
	// 绘制X轴刻度 
	for (i = 0; i < 256; i += 5) 
	{ 
		if ((i & 1) == 0) 
		{ 
			//10的倍数 
			pDC->MoveTo(i + 10, 280); 
			pDC->LineTo(i + 10, 284); 
		} 
		else 
		{ 
			//非10的倍数 
			pDC->MoveTo(i + 10, 280); 
			pDC->LineTo(i + 10, 282); 
		} 
	} 
	 
	// 绘制X轴箭头 
	pDC->MoveTo(305,275); 
	pDC->LineTo(310,280); 
	pDC->LineTo(305,285); 
	 
	// 绘制Y轴箭头 
	pDC->MoveTo(5,15); 
	pDC->LineTo(10,10); 
	pDC->LineTo(15,15); 
	 
	// 计算最大计数值 
	for (i = m_iLowGray; i <= m_iUpGray; i ++) 
	{ 
		// 判断是否大于当前最大值 
		if (m_lGrayCount[i] > lMaxCount) 
		{ 
			// 更新最大值 
			lMaxCount = m_lGrayCount[i]; 
		} 
	} 
	 
	// 输出最大计数值 
	pDC->MoveTo(10, 25); 
	pDC->LineTo(14, 25); 
	str.Format("%d", lMaxCount); 
	pDC->TextOut(11, 26, str); 
	 
	// 更改成红色画笔 
	pDC->SelectObject(pPenRed);	 
	 
	// 绘制窗口上下限 
	pDC->MoveTo(m_iLowGray + 10, 25); 
	pDC->LineTo(m_iLowGray + 10, 280); 
	 
	pDC->MoveTo(m_iUpGray + 10, 25); 
	pDC->LineTo(m_iUpGray + 10, 280); 
	 
	// 更改成黑色画笔 
	pDC->SelectObject(pPenBlack);	 
	 
	// 判断是否有计数 
	if (lMaxCount > 0) 
	{ 
		// 绘制直方图 
		for (i = m_iLowGray; i <= m_iUpGray; i ++) 
		{ 
			pDC->MoveTo(i + 10, 280); 
			pDC->LineTo(i + 10, 281 - (int) (m_lGrayCount[i] * 256 / lMaxCount)); 
		} 
	} 
	 
	// 恢复以前的画笔 
	pDC->SelectObject(pOldPen);	 
	 
	// 删除新的画笔 
	delete pPenRed; 
	delete pPenBlack; 
}