viewcutview.cpp

实现简单的分割视图并在其中实现计数器功能,以及简单的绘图

// viewcutView.cpp : implementation of the CViewcutView class
//

#include "stdafx.h"
#include "viewcut.h"

#include "viewcutDoc.h"
#include "viewcutView.h"

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

/////////////////////////////////////////////////////////////////////////////
// CViewcutView

IMPLEMENT_DYNCREATE(CViewcutView, CView)

BEGIN_MESSAGE_MAP(CViewcutView, CView)
	//{{AFX_MSG_MAP(CViewcutView)
	ON_COMMAND(ID_Clear, OnClear)
	ON_COMMAND(ID_Ellipse, OnEllipse)
	ON_COMMAND(ID_Line, OnLine)
	ON_COMMAND(ID_Rectangle, OnRectangle)
	ON_WM_LBUTTONDOWN()
	ON_WM_LBUTTONUP()
	ON_WM_MOUSEMOVE()
	ON_COMMAND(ID_changecolor, Onchangecolor)
	ON_COMMAND(ID_changefont, Onchangefont)
	ON_COMMAND(ID_Brush, OnBrush)
	//}}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()

/////////////////////////////////////////////////////////////////////////////
// CViewcutView construction/destruction

CViewcutView::CViewcutView()
{
	drawflay=false;
	drawtype=-1;

}

CViewcutView::~CViewcutView()
{
}

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

	return CView::PreCreateWindow(cs);
}

/////////////////////////////////////////////////////////////////////////////
// CViewcutView drawing

void CViewcutView::OnDraw(CDC* pDC)
{
	CViewcutDoc* pDoc = GetDocument();
	ASSERT_VALID(pDoc);
    
	CString str;
	str.Format("%6f",result);
	pDC->TextOut(200,200,str);
	CFont font;
	//通过LOGFONT结构创建字体
	font.CreateFontIndirect(&pDoc->logfont);
	//将字体选入设备环境
	CFont *oldfont=pDC->SelectObject(&font);
	pDC->SetTextAlign(TA_CENTER);//可去除
	//设置字体颜色
	pDC->SetTextColor(pDoc->color);
	pDC->TextOut(100,100,"太平天国");
	OnBrush(pDC);
	//恢复设备环境
	pDC->SelectObject(oldfont);//可去除
	//删除字体
	font.DeleteObject();//可去除
	// TODO: add draw code for native data here
}

/////////////////////////////////////////////////////////////////////////////
// CViewcutView printing

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

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

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

/////////////////////////////////////////////////////////////////////////////
// CViewcutView diagnostics

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

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

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

/////////////////////////////////////////////////////////////////////////////
// CViewcutView message handlers

void CViewcutView::OnClear() 
{
	Invalidate();
	
}

void CViewcutView::OnEllipse() 
{
	drawtype=2;
	
}

void CViewcutView::OnLine() 
{
	drawtype=0;
	
}

void CViewcutView::OnRectangle() 
{
	drawtype=1;
	
}

void CViewcutView::OnLButtonDown(UINT nFlags, CPoint point) 
{
	drawflay=true;
	startpoint=endpoint=point;
	
	CView::OnLButtonDown(nFlags, point);
}

void CViewcutView::OnLButtonUp(UINT nFlags, CPoint point) 
{
	drawflay=false;
	startpoint=endpoint=point;
	
	CView::OnLButtonUp(nFlags, point);
}

void CViewcutView::OnMouseMove(UINT nFlags, CPoint point) 
{   
	CViewcutDoc* pDoc = GetDocument();
	ASSERT_VALID(pDoc);

	CClientDC dc(this);
	dc.SetROP2(R2_NOTXORPEN);

	CPen  mypen;
    mypen.CreatePen(PS_SOLID,3,pDoc->color);
    dc.SelectObject(&mypen);
	  if(drawflay)
	  {
		switch(drawtype)
		{case 0:dc.MoveTo(startpoint);dc.LineTo(endpoint);endpoint=point;
		        dc.MoveTo(startpoint);dc.LineTo(endpoint);break;
		 case 1:dc.Rectangle(startpoint.x,startpoint.y,endpoint.x,endpoint.y);
                        endpoint=point;
                        dc.Rectangle(startpoint.x,startpoint.y,endpoint.x,endpoint.y);break;
		 case 2:dc.Ellipse(startpoint.x,startpoint.y,endpoint.x,endpoint.y);endpoint=point;
		        dc.Ellipse(startpoint.x,startpoint.y,endpoint.x,endpoint.y);break;
		}
	  }      
	
	mypen.DeleteObject();
	CView::OnMouseMove(nFlags, point);
}

void CViewcutView::Onchangecolor() 
{
	CViewcutDoc* pDoc = GetDocument();
	ASSERT_VALID(pDoc);
	//生成标准字体对话框
	CColorDialog cd;
	if(cd.DoModal()==IDOK)
	{
		//获取用户选择的颜色
		pDoc->color=cd.GetColor();
	}
	
}

void CViewcutView::Onchangefont() 
{
	CViewcutDoc* pDoc = GetDocument();
	ASSERT_VALID(pDoc);
	//生成标准字体对话框
	CFontDialog cd;
	if(cd.DoModal()==IDOK)
	{
		//获取用户选择的字体
		cd.GetCurrentFont(&pDoc->logfont);
	    Invalidate();
	}
	
}

void CViewcutView::OnBrush(CDC *pDC) 
{
   UINT i,pos,gap,width;
   CRect rc;
   GetClientRect(&rc);
   pos=20;
   gap=35;
   width=rc.Width()-40;
   CBrush br,*obr;

   CViewcutDoc* pDoc=GetDocument();
   ASSERT_VALID(pDoc);
   //使用6种花纹绘制圆角矩形
   for(i=0;i<6;i++)
   {   //创建一个带花纹的画刷
	   br.CreateHatchBrush(i,pDoc->color);       
	   obr=pDC->SelectObject(&br);         //将画刷选入设备环境
       //绘制圆角矩形
	   pDC->RoundRect(pos,pos+i*gap,pos+width,pos+i*gap+30,pos+20,pos+20);  
	   pDC->SelectObject(obr);              //恢复原来的绘图设备环境
	   //删除画刷
	   br.DeleteObject();//由于下面还要调用br.CreateSolidBrush(),因此这一句代码是必须的
   }
   //最后使用实填充画刷绘制矩形
   br.CreateSolidBrush(pDoc->color);
   obr=pDC->SelectObject(&br);
   pDC->RoundRect(pos,pos+i*gap,pos+width,pos+i*gap+30,pos+20,pos+20);
   pDC->SelectObject(obr);
   br.DeleteObject();	
}