cedlg.cpp

又VC＋＋实现的基于TWAIN的扫描仪图像输入处理软件

// CEDlg.cpp : implementation file
//

#include "stdafx.h"
#include "source10.h"
#include "AIEDlg.h"
#include "CEDlg.h"

#include "math.h"
#ifdef _DEBUG
#define new DEBUG_NEW
#undef THIS_FILE
static char THIS_FILE[] = __FILE__;
#endif
extern CAIEDlg *m_pAIEDlg;
/////////////////////////////////////////////////////////////////////////////
// CCEDlg dialog
//POINT MousePos;
CCEDlg::CCEDlg(CWnd* pParent /*=NULL*/)
	: CDialog(CCEDlg::IDD, pParent)
{
	int i;
	COORDINATE p;

	m_nID     = CCEDlg::IDD;//IDD=IDD_AIE_CURVE
	m_pParent = pParent;//pParent=NULL

	//初始化矩形方框中索引点坐标的索引表，表明在LIST定义的两点之间有256个
	//查询点，它的大小为变量，随LIST中点的个数，点与点之间的距离有关
	for(i=0;i<256;i++)
		m_Index[i] = i;
	p.x = 0;
	p.y = 0;
	//为表增加内容，表的元素反映的是点的坐标
	m_PointList.AddTail( p );
	i=0;
//	m_PointList.AddTail(i);
	p.x = 255;
	p.y = 255;
	m_PointList.AddTail( p );

	//{{AFX_DATA_INIT(CCEDlg)
	  m_sMethod = _T("Gamma");
	  m_sChannel = _T("主通道");
   	//}}AFX_DATA_INIT
}
extern CSource10App theApp;

BOOL CCEDlg::Create(void)
{
	//调用资源产生无模式的CE对话框
	return CDialog::Create(m_nID,m_pParent);
}

void CCEDlg::DoDataExchange(CDataExchange* pDX)
{
	CDialog::DoDataExchange(pDX);
	//{{AFX_DATA_MAP(CCEDlg)
	   DDX_CBString(pDX, IDC_METHOD, m_sMethod);
	   DDX_CBString(pDX, IDC_CHANNEL, m_sChannel);
  	//}}AFX_DATA_MAP
}


BEGIN_MESSAGE_MAP(CCEDlg, CDialog)
	//{{AFX_MSG_MAP(CCEDlg)
	ON_WM_PAINT()
	ON_WM_LBUTTONDOWN()
	ON_CBN_SELCHANGE(IDC_METHOD, OnSelchangeMethod)
	ON_WM_MOUSEMOVE()
	ON_WM_LBUTTONUP()
	ON_WM_TIMER()
	//}}AFX_MSG_MAP
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
//响应消息调用画线函数

void CCEDlg::OnPaint() 
{
	int i;
	POSITION position;
	COORDINATE p1,p2;
	CRect		rect;	//Histogram zoom
		
	//Get the coordination of histogram frame.
	GetDlgItem(IDC_STATIC_FRAME)->GetClientRect(rect);
	GetDlgItem(IDC_STATIC_FRAME)->ClientToScreen(rect);
	ScreenToClient(rect);

	//使用户坐标缩小
	rect.left++;
	rect.top++;
	rect.right--;
	rect.bottom--;
	rect.right--;
	rect.bottom--;

	////////
	CPaintDC dc(this); // device context for painting
	//产生点线笔，宽度为1
	CPen newPen( PS_DOT, 1, RGB(240,240,240));//;RGB(255,0,0)	 
    //产生硬笔
	CPen MasterPen( PS_SOLID, 1, RGB(0,0,0));
	CPen RedPen( PS_SOLID, 1, RGB(255,0,0));
	CPen GreenPen( PS_SOLID, 1, RGB(0,255,0));
	CPen BluePen( PS_SOLID, 1, RGB(0,0,255));
	CPen* oldPen;
	
	//选择新笔代替当前的笔
	oldPen=dc.SelectObject( &newPen );

	//画水平和垂直的点划线
	for(i=1;i<4;i++)
	{
		//horizontal
		dc.MoveTo(rect.left, rect.top+(rect.bottom-rect.top)/4*i);
		dc.LineTo(rect.right,rect.top+(rect.bottom-rect.top)/4*i);
		//vertical
		dc.MoveTo(rect.left+(rect.right-rect.left)/4*i,rect.top);
		dc.LineTo(rect.left+(rect.right-rect.left)/4*i,rect.bottom);

	}

	UpdateData(TRUE);

    if(m_sChannel=="主通道")
	{
		dc.SelectObject( &MasterPen);
	}
	if(m_sChannel=="红通道")
	{
		dc.SelectObject( &RedPen );
	}
	if(m_sChannel=="绿通道")
	{
	   dc.SelectObject( &GreenPen );
	}
	if(m_sChannel=="蓝通道")
	{
	   dc.SelectObject( &BluePen );
	}

	//根据LIST中位置点画线
	position = m_PointList.GetHeadPosition();
	p1=m_PointList.GetNext(position);
    dc.Rectangle( (p1.x*(rect.right-rect.left))/255+rect.left-3 ,rect.bottom-(p1.y*(rect.bottom-rect.top))/255-3,
			(p1.x*(rect.right-rect.left))/255+rect.left+3 ,rect.bottom-(p1.y*(rect.bottom-rect.top))/255+3 );

	dc.MoveTo( (p1.x*(rect.right-rect.left))/255+rect.left ,rect.bottom-(p1.y*(rect.bottom-rect.top))/255);
	while( position!=NULL )
	{
	
		p2=m_PointList.GetNext(position);
		dc.LineTo((p2.x*(rect.right-rect.left))/255+rect.left ,rect.bottom-(p2.y*(rect.bottom-rect.top))/255);
		p1=p2;
		
		//在笔的起始点画一个小矩形框 .
		dc.Rectangle( (p1.x*(rect.right-rect.left))/255+rect.left-3 ,rect.bottom-(p1.y*(rect.bottom-rect.top))/255-3,
			(p1.x*(rect.right-rect.left))/255+rect.left+3 ,rect.bottom-(p1.y*(rect.bottom-rect.top))/255+3 );
		//移动笔到下一个点
		dc.MoveTo( (p1.x*(rect.right-rect.left))/255+rect.left ,rect.bottom-(p1.y*(rect.bottom-rect.top))/255);
	};

	//恢复初始笔即点线笔
	dc.SelectObject( oldPen );

}

//////////////////////////////////////////////////////////////////////////////////////////
//
void CALLBACK EXPORT MyOnTimer(struct HWND__ *,unsigned int,unsigned int,unsigned long);

//CE对话框前响应WM_INITDIALOG消息调用初始化函数
BOOL CCEDlg::OnInitDialog() 
{
	COORDINATE p;
	int i;

    
	CDialog::OnInitDialog();
	if(m_sMethod=="Gamma")
	{
         ((CAIEDlg*)m_pParent)->method=FALSE;
		//由继承知表中已存在两个元素
		//移走队尾元素并返回其值
		m_PointList.RemoveTail();
		//表中增加元素，共27个元素即位置点
		for(i=1;i<26;i++)
		{
			p.x=10*i;
			p.y=(int)(255*pow(p.x/255.0,0.5));
			m_PointList.AddTail(p);
		}
		p.x=255;
		p.y=255;
		m_PointList.AddTail(p);

		//调用函数产生Gamma索引值数组
		Updatem_IndexfromGamma( 0.5 );		
		
	}
	// TODO: Add extra initialization here
	
	m_bDragLines = FALSE;
	m_bDragGamma = FALSE;

	SetTimer( 1, 2000, MyOnTimer);
	return TRUE;  
}

//选择参数矫正的方法（GAMMA，LINE）缺省为GAMMA
void CCEDlg::OnSelchangeMethod() 
{
	COORDINATE p;
    CRect rect;
     int i;
	UpdateData(TRUE);
	if(m_sMethod=="Line")
	{
		((CAIEDlg*)m_pParent)->method=TRUE;
		m_PointList.RemoveAll();
		//增加新的元素
		p.x=0;
		p.y=0;
		m_PointList.AddTail(p);
		p.x=255;
		p.y=255;
		m_PointList.AddTail(p);
	}
	else
	{
       ((CAIEDlg*)m_pParent)->method=FALSE;
 
        m_PointList.RemoveAll();
         p.x=0;
		 p.y=0;
         m_PointList.AddTail(p);
		//表中增加元素，共27个元素即位置点
		for(i=1;i<26;i++)
		{
			p.x=10*i;
			p.y=(int)(255*pow(p.x/255.0,0.5));
			m_PointList.AddTail(p);
		}
		p.x=255;
		p.y=255;
		m_PointList.AddTail(p);
	}
    
	GetDlgItem(IDC_STATIC_FRAME)->GetClientRect(rect);
	//将RECT中的用户坐标转换为系统坐标
	GetDlgItem(IDC_STATIC_FRAME)->ClientToScreen(rect);
	ScreenToClient(rect);
    InvalidateRect( &rect, TRUE ); 
}
//////////////////////////////////////////////////////////////////////////////////////////////

//在当前窗口下鼠标左键按下时调用此函数
void CCEDlg::OnLButtonDown(UINT nFlags, CPoint point) 
{
	POSITION position;
	COORDINATE NewNod;
	CRect rect;
	double fGamma;
	int i;

	GetDlgItem(IDC_STATIC_FRAME)->GetClientRect(rect);
	GetDlgItem(IDC_STATIC_FRAME)->ClientToScreen(rect);
	ScreenToClient(rect);

	if(point.x<=rect.right&&point.x>=rect.left&&point.y<=rect.bottom&&point.y>=rect.top)
	{
		UpdateData(TRUE);

		//矫正方法为LINE，LINE线上点的个数随鼠标按下点的增多而增加
		//LIST表的大小是变化的，索引表也随之而变
		if(m_sMethod=="Line")
		{
		  if( MouseInSlidePos(point) )
		  {
			m_bDragLines = TRUE;
		  }
		  else
		  {
			//插入新点并画新线
			position = m_PointList.GetHeadPosition();		
			while( position!=NULL )
			{
			//从头点开始直到找到比按下点大的点，跳出循环
			  NewNod=m_PointList.GetNext(position);
			  if(NewNod.x>=(point.x-rect.left)*255/(rect.right-rect.left))
			   break;
			}
			//修正按下点的位置值
			NewNod.x = (point.x-rect.left)*255/(rect.right-rect.left);
			NewNod.y = (rect.bottom-point.y)*255/(rect.bottom-rect.top);
			if(position==NULL)
			{
			//没有比按下点大的点，取表尾点
				position=m_PointList.GetTailPosition();
                m_PointList.InsertBefore(position,NewNod);
			}
			else
			{
				m_PointList.GetPrev(position);
                m_PointList.GetPrev(position);
				m_PointList.InsertAfter(position,NewNod);
			}
			//修正索引位置的索引表
			Updatem_IndexfromLines( );
			InvalidateRect( &rect, TRUE );	
		}
	}

//矫正GAMMA曲线的方法，GAMMA曲线中LIST中有27个位置点
//矫正的过程是随着按下点的位置重新计算27个点位置，同时修正索引表
		if(m_sMethod=="Gamma")
		{
		  if( MouseInSlidePos(point) )
		  {
			m_bDragGamma = TRUE;
		  }
		  else
		  {
			NewNod.x = (point.x-rect.left)*255/(rect.right-rect.left);
			NewNod.y = (rect.bottom-point.y)*255/(rect.bottom-rect.top);
			if(NewNod.x==0||NewNod.y==0)
				return;