www.pudn.com > Map_OpenGL.rar > Map_2DView.cpp

// Map_2DView.cpp : implementation file 
// 
 
#include "stdafx.h" 
#include "Map_OpenGL.h" 
#include "Map_2DView.h" 
#include "Map_Tool.h" 
#include "MainFrm.h" 
 
#ifdef _DEBUG 
#define new DEBUG_NEW 
#undef THIS_FILE 
static char THIS_FILE[] = __FILE__; 
#endif 
 
///////////////////////////////////////////////////////////////////////////// 
// CMap_2DView 
 
IMPLEMENT_DYNCREATE(CMap_2DView, CView) 
 
CMap_2DView::CMap_2DView() 
{ 
	m_mpDC=new CDC; 
	m_bitmap=new CBitmap; 
} 
 
CMap_2DView::~CMap_2DView() 
{ 
} 
 
 
BEGIN_MESSAGE_MAP(CMap_2DView, CView) 
	//{{AFX_MSG_MAP(CMap_2DView) 
	ON_WM_CREATE() 
	ON_WM_MOUSEMOVE() 
	//}}AFX_MSG_MAP 
END_MESSAGE_MAP() 
 
///////////////////////////////////////////////////////////////////////////// 
// CMap_2DView drawing 
 
void CMap_2DView::OnDraw(CDC* pDC) 
{ 
	CMap_OpenGLDoc* pDoc = GetDocument(); 
	ASSERT(pDoc); 
	 
	GetClientRect(m_maprc); 
//	GetWindowRect(m_maprc); 
 
	CBitmap* oldbitmap=m_mpDC->SelectObject(m_bitmap); 
	CBrush bgbrush((COLORREF)::GetSysColor(COLOR_WINDOW)); 
	CBrush* oldbrush=m_mpDC->SelectObject(&bgbrush); 
	m_mpDC->PatBlt(m_maprc.left,m_maprc.top,m_maprc.Width(),m_maprc.Height(),PATCOPY); 
 
	if(CMap_Tool::map_select==Map_binarydem) 
	{ 
		pDoc->m_binarydem.InitShow(m_maprc); 
		pDoc->m_binarydem.ShowDem(m_mpDC); 
	} 
 
	if(CMap_Tool::map_select==Map_texttin) 
	{ 
		pDoc->m_tindate.InitShow(m_maprc); 
		pDoc->m_tindate.TinShow(m_mpDC); 
	} 
 
	pDC->BitBlt(m_maprc.left,m_maprc.top,m_maprc.Width(),m_maprc.Height(),m_mpDC,m_maprc.left,m_maprc.top,SRCCOPY); 
	m_mpDC->SelectObject(oldbitmap); 
	m_mpDC->SelectObject(oldbrush); 
 
	 
} 
 
///////////////////////////////////////////////////////////////////////////// 
// CMap_2DView diagnostics 
 
#ifdef _DEBUG 
void CMap_2DView::AssertValid() const 
{ 
	CView::AssertValid(); 
} 
 
void CMap_2DView::Dump(CDumpContext& dc) const 
{ 
	CView::Dump(dc); 
} 
#endif //_DEBUG 
 
///////////////////////////////////////////////////////////////////////////// 
// CMap_2DView message handlers 
 
int CMap_2DView::OnCreate(LPCREATESTRUCT lpCreateStruct)  
{ 
	if (CView::OnCreate(lpCreateStruct) == -1) 
		return -1; 
	 
		CClientDC pDC(this); 
	 
	// TODO: Add your specialized creation code here 
	//保存屏幕坐标中水平和垂直方向的值 
	int		m_nFullWidth	= GetSystemMetrics(SM_CXSCREEN); 
	int		m_nFullHeight	= GetSystemMetrics(SM_CYSCREEN); 
 
	//GetSafeHdc()函数的功能是:得到成员函数输出设备的上下文m_hdc 
 
	// 如果设备上下文的m_hdc为空,则执行以下的程序,否则不执行 
	if(m_mpDC->GetSafeHdc() == NULL)			//m_pMemDC	=	new CDC 
	{				 
		CRect	rectMax(0,0,m_nFullWidth,m_nFullHeight); 
 
		//CreateCompatibleDC()是在内存中分创建一个与设备上下文对应的设备上下文 
		m_mpDC->CreateCompatibleDC(&pDC);		 
 
		//在内存中创建一个于位图相关的设备上下文 
		m_bitmap->CreateCompatibleBitmap(&pDC,rectMax.right,rectMax.bottom); 
 
		//定义一个位图指针变更,保存原有的位图模式 
		CBitmap* pOldBitmap	= m_mpDC->SelectObject(m_bitmap); 
 
		//得到系统窗口的画刷颜色 
		CBrush backgroundBrush((COLORREF)::GetSysColor(COLOR_WINDOW)); 
 
		//设置并保存原有的画刷颜色 
		CBrush*	pOldBrush	= m_mpDC->SelectObject(&backgroundBrush); 
 
		//复制模式到指定的矩形范围内 
		m_mpDC->PatBlt(rectMax.left,rectMax.top,rectMax.Width(),rectMax.Height(),PATCOPY); 
 
		//还原位图和画刷设置 
		m_mpDC->SelectObject(pOldBitmap); 
		m_mpDC->SelectObject(pOldBrush); 
	} 
	 
	return 0; 
} 
 
void CMap_2DView::OnMouseMove(UINT nFlags, CPoint point)  
{ 
	// TODO: Add your message handler code here and/or call default 
	CMap_OpenGLDoc* pDoc=GetDocument(); 
	ASSERT(pDoc); 
	 
	CMainFrame* pFram=(CMainFrame*)AfxGetApp()->m_pMainWnd; 
	CStatusBar* pst=&pFram->m_wndStatusBar; 
	CString str_dem; 
 
	if(CMap_Tool::map_select==Map_binarydem) 
	{ 
		double x,y; 
		pDoc->m_binarydem.ScreenToMap(point.x,point.y,x,y); 
		str_dem.Format("X=%f;Y=%f",x,y); 
		pst->SetPaneText(0,str_dem); 
	} 
 
	if(CMap_Tool::map_select==Map_texttin) 
	{ 
		double x,y; 
		pDoc->m_tindate.ScreenToMap(point.x,point.y,x,y); 
		str_dem.Format("X=%f;Y=%f",x,y); 
		pst->SetPaneText(0,str_dem); 
	} 
		 
	CView::OnMouseMove(nFlags, point); 
}