paintview.cpp

来自「Visual_C++.NET实用编程百例」· C++ 代码 · 共 307 行

// paintView.cpp : CpaintView 类的实现
//

#include "stdafx.h"
#include "paint.h"

#include "paintDoc.h"
#include "paintView.h"
#include ".\paintview.h"

#ifdef _DEBUG
#define new DEBUG_NEW
#endif


// CpaintView

IMPLEMENT_DYNCREATE(CpaintView, CView)

BEGIN_MESSAGE_MAP(CpaintView, CView)
	// 标准打印命令
	ON_COMMAND(ID_FILE_PRINT, CView::OnFilePrint)
	ON_COMMAND(ID_FILE_PRINT_DIRECT, CView::OnFilePrint)
	ON_COMMAND(ID_FILE_PRINT_PREVIEW, CView::OnFilePrintPreview)
	ON_WM_MOUSEMOVE()
	ON_WM_LBUTTONDBLCLK()
	ON_WM_LBUTTONDOWN()
	ON_WM_LBUTTONUP()
	ON_COMMAND(ID_DOT, OnDot)
	ON_COMMAND(ID_LINE, OnLine)
	ON_COMMAND(ID_RECT, OnRect)
	ON_COMMAND(ID_ELLIPSE, OnEllipse)
	ON_COMMAND(ID_Red, OnRed)
	ON_COMMAND(ID_Green, OnGreen)
	ON_COMMAND(ID_Blue, OnBlue)
END_MESSAGE_MAP()

// CpaintView 构造/析构

CpaintView::CpaintView()
{
	// TODO: 在此处添加构造代码
	down=false;
	flag = 0;
	color = 0;
}

CpaintView::~CpaintView()
{
}

BOOL CpaintView::PreCreateWindow(CREATESTRUCT& cs)
{
	// TODO: 在此处通过修改 CREATESTRUCT cs 来修改窗口类或
	// 样式

	return CView::PreCreateWindow(cs);
}

// CpaintView 绘制

void CpaintView::OnDraw(CDC* /*pDC*/)
{
	CpaintDoc* pDoc = GetDocument();
	ASSERT_VALID(pDoc);
	if (!pDoc)
		return;

	// TODO: 在此处为本机数据添加绘制代码
}


// CpaintView 打印

BOOL CpaintView::OnPreparePrinting(CPrintInfo* pInfo)
{
	// 默认准备
	return DoPreparePrinting(pInfo);
}

void CpaintView::OnBeginPrinting(CDC* /*pDC*/, CPrintInfo* /*pInfo*/)
{
	// TODO: 打印前添加额外的初始化
}

void CpaintView::OnEndPrinting(CDC* /*pDC*/, CPrintInfo* /*pInfo*/)
{
	// TODO: 打印后添加清除过程
}


// CpaintView 诊断

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

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

CpaintDoc* CpaintView::GetDocument() const // 非调试版本是内联的
{
	ASSERT(m_pDocument->IsKindOf(RUNTIME_CLASS(CpaintDoc)));
	return (CpaintDoc*)m_pDocument;
}
#endif //_DEBUG


// CpaintView 消息处理程序

void CpaintView::OnMouseMove(UINT nFlags, CPoint point)
{
	// TODO: 在此添加消息处理程序代码和/或调用默认值
	if(down)
	{
		CClientDC dc(this);
		if(flag==0)
		{	
			CPen *pOld;
			if(color == 1)
			{
				CBrush cb;
				cb.CreateSolidBrush(RGB(255,0,0));
				dc.SelectObject (&cb);
				CPen p(PS_SOLID,1,RGB(255,0,0));
				pOld=dc.SelectObject (&p);
				dc.Ellipse (point.x,point.y,point.x + 3,point.y + 3);
			}
			else if(color == 2)
			{
				CBrush cb;
				cb.CreateSolidBrush(RGB(0,255,0));
				dc.SelectObject (&cb);
				CPen p(PS_SOLID,1,RGB(0,255,0));
				pOld=dc.SelectObject (&p);
				dc.Ellipse (point.x,point.y,point.x + 3,point.y + 3);
			}
			else if(color == 3)
			{
				CBrush cb;
				cb.CreateSolidBrush(RGB(0,0,255));
				dc.SelectObject (&cb);
				CPen p(PS_SOLID,1,RGB(0,0,255));
				pOld=dc.SelectObject (&p);
				dc.Ellipse (point.x,point.y,point.x + 3,point.y + 3);
			}
			else
			{
				CBrush cb;
				cb.CreateSolidBrush(RGB(255,255,255));
				dc.SelectObject (&cb);
				CPen p(PS_SOLID,1,RGB(255,255,255));
				pOld=dc.SelectObject (&p);
				dc.Ellipse (point.x,point.y,point.x + 3,point.y + 3);
			}
			dc.SelectObject (pOld);
		}
		CView::OnMouseMove(nFlags, point);
	}
}

void CpaintView::OnLButtonDblClk(UINT nFlags, CPoint point)
{
	// TODO: 在此添加消息处理程序代码和/或调用默认值

	CView::OnLButtonDblClk(nFlags, point);
}

void CpaintView::OnLButtonDown(UINT nFlags, CPoint point)
{
	// TODO: 在此添加消息处理程序代码和/或调用默认值
	down = true;
	sPoint = point;
	SetCapture();
	CView::OnLButtonDown(nFlags, point);
}

void CpaintView::OnLButtonUp(UINT nFlags, CPoint point)
{
	// TODO: 在此添加消息处理程序代码和/或调用默认值
	down = false;
	CClientDC dc(this);
	ReleaseCapture();
	ePoint=point;	
	CPen *pOld;
	if(color == 1)
	{		
		CPen p(PS_SOLID,1,RGB(255,0,0));
		pOld=dc.SelectObject (&p);
		if(flag==1)
		{
			dc.MoveTo(sPoint);
			dc.LineTo(point);
		}
		else if(flag==2)
		{
			dc.Rectangle (sPoint.x,sPoint.y,point.x,point.y);
		}
		else if(flag == 3)
		{
			dc.Ellipse (sPoint.x,sPoint.y,point.x,point.y);
		}
	}
	else if(color == 2)
	{
		CPen p(PS_SOLID,1,RGB(0,255,0));
		pOld=dc.SelectObject (&p);
		if(flag==1)
		{
			dc.MoveTo(sPoint);
			dc.LineTo(point);
		}
		else if(flag==2)
		{
			dc.Rectangle (sPoint.x,sPoint.y,point.x,point.y);
		}
		else if(flag == 3)
		{
			dc.Ellipse (sPoint.x,sPoint.y,point.x,point.y);
		}
	}
	else if(color == 3)
	{
		CPen p(PS_SOLID,1,RGB(0,0,255));
		pOld=dc.SelectObject (&p);
		if(flag==1)
		{
			dc.MoveTo(sPoint);
			dc.LineTo(point);
		}
		else if(flag==2)
		{
			dc.Rectangle (sPoint.x,sPoint.y,point.x,point.y);
		}
		else if(flag == 3)
		{
			dc.Ellipse (sPoint.x,sPoint.y,point.x,point.y);
		}
	}
	else
	{
		CPen p(PS_SOLID,1,RGB(255,255,255));
		pOld=dc.SelectObject (&p);
		if(flag==1)
		{
			dc.MoveTo(sPoint);
			dc.LineTo(point);
		}
		else if(flag==2)
		{
			dc.Rectangle (sPoint.x,sPoint.y,point.x,point.y);
		}
		else if(flag == 3)
		{
			dc.Ellipse (sPoint.x,sPoint.y,point.x,point.y);
		}
	}	
	dc.SelectObject (pOld);
	CView::OnLButtonUp(nFlags, point);
}

void CpaintView::OnDot()
{
	// TODO: 在此添加命令处理程序代码
	flag=0;
}

void CpaintView::OnLine()
{
	// TODO: 在此添加命令处理程序代码
	flag =1;
}

void CpaintView::OnRect()
{
	// TODO: 在此添加命令处理程序代码
	flag = 2;
}

void CpaintView::OnEllipse()
{
	// TODO: 在此添加命令处理程序代码
	flag = 3;
}

void CpaintView::OnRed()
{
	// TODO: 在此添加命令处理程序代码
	color = 1;
}

void CpaintView::OnGreen()
{
	// TODO: 在此添加命令处理程序代码
	color = 2;
}

void CpaintView::OnBlue()
{
	// TODO: 在此添加命令处理程序代码
	color = 3;
}