scanlineseedfillingview.cpp

提供一个图形工具界面

// ScanLineSeedFillingView.cpp : implementation of the CScanLineSeedFillingView class
//

#include "stdafx.h"
#include "ScanLineSeedFilling.h"

#include "ScanLineSeedFillingDoc.h"
#include "ScanLineSeedFillingView.h"

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

/////////////////////////////////////////////////////////////////////////////
// CScanLineSeedFillingView

IMPLEMENT_DYNCREATE(CScanLineSeedFillingView, CView)

BEGIN_MESSAGE_MAP(CScanLineSeedFillingView, CView)
	//{{AFX_MSG_MAP(CScanLineSeedFillingView)
	ON_COMMAND(IDC_DRAWREGION, OnDrawregion)
	ON_WM_LBUTTONDOWN()
	ON_WM_MOUSEMOVE()
	ON_WM_LBUTTONUP()
	ON_COMMAND(IDC_SEED, OnSeed)
	ON_COMMAND(IDC_SCANNINGLINESEEDFILLING, OnScanninglineseedfilling)
	ON_WM_RBUTTONDOWN()
	ON_COMMAND(IDM_COLOR, OnColor)
	//}}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()

/////////////////////////////////////////////////////////////////////////////
// CScanLineSeedFillingView construction/destruction

CScanLineSeedFillingView::CScanLineSeedFillingView()
{
	// TODO: add construction code here
	sign=0;top=-1;
	m_bTracking=FALSE;
	m_bCaptureEnabled=TRUE;
	m_clr=RGB(255,0,0);
}

CScanLineSeedFillingView::~CScanLineSeedFillingView()
{
}

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

	return CView::PreCreateWindow(cs);
}

/////////////////////////////////////////////////////////////////////////////
// CScanLineSeedFillingView drawing

void CScanLineSeedFillingView::OnDraw(CDC* pDC)
{
	CScanLineSeedFillingDoc* pDoc = GetDocument();
	ASSERT_VALID(pDoc);
	// TODO: add draw code for native data here
}

/////////////////////////////////////////////////////////////////////////////
// CScanLineSeedFillingView printing

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

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

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

/////////////////////////////////////////////////////////////////////////////
// CScanLineSeedFillingView diagnostics

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

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

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

/////////////////////////////////////////////////////////////////////////////
// CScanLineSeedFillingView message handlers

void CScanLineSeedFillingView::OnDrawregion() 
{
	// TODO: Add your command handler code here
	sign=1;Invalidate(1);
}

void CScanLineSeedFillingView::OnLButtonDown(UINT nFlags, CPoint point) 
{
	// TODO: Add your message handler code here and/or call default
	if (sign==1)
	{
		m_ptFrom=point;
		m_ptTo=point;
		m_bTracking=TRUE;
		if (m_bCaptureEnabled)
		{
			SetCapture();
		}
	}
	if (sign==2)
	{
		P=point;
		CClientDC dc(this);
		SetPixel(dc,P.x,P.y,RGB(255,0,0));
	}
	CView::OnLButtonDown(nFlags, point);
}

void CScanLineSeedFillingView::OnMouseMove(UINT nFlags, CPoint point) 
{
	// TODO: Add your message handler code here and/or call default
	if (m_bTracking&&sign==1)
	{
		CClientDC dc(this);
		CPen pen(PS_SOLID,1,RGB(0,0,0));
		CPen*pOldPen=dc.SelectObject(&pen);
		dc.MoveTo(m_ptFrom);
		dc.LineTo(point);
		m_ptFrom=point;
	}
	CView::OnMouseMove(nFlags, point);
}

void CScanLineSeedFillingView::OnLButtonUp(UINT nFlags, CPoint point) 
{
	// TODO: Add your message handler code here and/or call default
	if (m_bTracking)
	{
		m_bTracking=FALSE;
		if (GetCapture()==this)
		{
			::ReleaseCapture();
		}
//		sign=0;
	}
	CView::OnLButtonUp(nFlags, point);
}

void CScanLineSeedFillingView::OnSeed() 
{
	// TODO: Add your command handler code here
	sign=2;
}

void CScanLineSeedFillingView::OnScanninglineseedfilling() 
{
	// TODO: Add your command handler code here
	sign=3;
	CPoint ptFrom;
	int x0,x,y,y0,xid,xleft,xright,flag,xnextspan;
	Push(P);
	while (Empty())
	{
		ptFrom=Pop();
		CClientDC dc(this);
		SetPixel(dc,ptFrom.x,ptFrom.y,m_clr);
		x=ptFrom.x;y=ptFrom.y;
		x0=x+1;
		while(GetPixel(dc,x0,y)!=RGB(0,0,0)) //填充右方像素
		{
			SetPixel(dc,x0,y,m_clr);
			x0++;
		}
		xright=x0-1; //最右边像素
		x0=x-1;
		while(GetPixel(dc,x0,y)!=RGB(0,0,0)) //填充左方像素
		{
			SetPixel(dc,x0,y,m_clr);
			x0--;
		}
		xleft=x0+1; //最左边像素
		//检查上一条扫描线和下一条扫描线，若存在非边界且未填充的像素，
		//则选取代表各连续区间的种子像素入栈。
		y0=y;
		for(int i=1;i>=-1;i-=2)
		{
			x0=xright;
			y=y0+i;
			while(x0>=xleft)
			{
				flag=0;
				while((GetPixel(dc,x0,y)!=RGB(0,0,0))
					&& (GetPixel(dc,x0,y)!=m_clr)
					&& (x0>xleft))
				{
					if(flag==0)
					{
						flag=1;
						xid=x0;
					}
					x0--;
				}
				if(flag==1)
				{
					ptFrom.x=xid;ptFrom.y=y;
					Push(ptFrom);
					flag=0;
				}
				xnextspan=x0;
				while((GetPixel(dc,x0,y)==RGB(0,0,0)) || (GetPixel(dc,x0,y)==m_clr) && (x0>=xleft))
					x0--;
				if(xnextspan==x0) x0--;
			}
		}
	}
}

void CScanLineSeedFillingView::Push(CPoint e)
{
	top++;
	elem[top]=e;
}

CPoint CScanLineSeedFillingView::Pop()
{
	CPoint P0;
	if (top<=-1)
	{
		P0=0;
	}
	else
	{
		P0=elem[top];
		top--;
	}
	return P0;
}

void CScanLineSeedFillingView::OnRButtonDown(UINT nFlags, CPoint point) 
{
	// TODO: Add your message handler code here and/or call default
	sign=0;
	CView::OnRButtonDown(nFlags, point);
}

int CScanLineSeedFillingView::Empty()
{
	if (top==-1)
	{
		return 0;
	}
	else
		return 1;
}

void CScanLineSeedFillingView::OnColor() 
{
	// TODO: Add your command handler code here
     CColorDialog dlg;
	 dlg.m_cc.Flags |=CC_RGBINIT|CC_FULLOPEN;
	 dlg.m_cc.rgbResult=m_clr;
	 if(IDOK==dlg.DoModal())
	 {
		 m_clr=dlg.m_cc.rgbResult;
	 }

	
}