blcview.cpp

一个简单的地理信息系统

// blcView.cpp : implementation of the CBlcView class
//

#include "stdafx.h"
#include "blc.h"
#include "MainFrm.h"
#include "blcDoc.h"
#include "blcView.h"

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

/////////////////////////////////////////////////////////////////////////////
// CBlcView

IMPLEMENT_DYNCREATE(CBlcView, CScrollView)

BEGIN_MESSAGE_MAP(CBlcView, CScrollView)
	//{{AFX_MSG_MAP(CBlcView)
	ON_COMMAND(ID_MAX, OnMax)
	ON_COMMAND(ID_MIN, OnMin)
	ON_COMMAND(ID_ALL, OnAll)
	ON_WM_MOUSEMOVE()
	//}}AFX_MSG_MAP
	// Standard printing commands
	ON_COMMAND(ID_FILE_PRINT, CScrollView::OnFilePrint)
	ON_COMMAND(ID_FILE_PRINT_DIRECT, CScrollView::OnFilePrint)
	ON_COMMAND(ID_FILE_PRINT_PREVIEW, CScrollView::OnFilePrintPreview)
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CBlcView construction/destruction

CBlcView::CBlcView()
{
	// TODO: add construction code here
    blc=1.0;
	A0rect.left=0;
	A0rect.top=0;
	A0rect.right=914;
	A0rect.bottom=1219;
 	m_CoorStr.Empty();
	m_CoorPoint.x=0;
	m_CoorPoint.y=0;
	i=0;
	j=0;
}

CBlcView::~CBlcView()
{
	
}

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

	return CScrollView::PreCreateWindow(cs);
}

/////////////////////////////////////////////////////////////////////////////
// CBlcView drawing

void CBlcView::OnDraw(CDC* pDC)
{
	CBlcDoc* pDoc = GetDocument();
	ASSERT_VALID(pDoc);
	// TODO: add draw code for native data here
	GetCurrentPen1();
    CPen pen;
	pen.CreatePen(i,j+1,RGB(128,0,128));

	pDC->SelectObject(pen);
	pDC->Rectangle((int)(A0rect.left*blc)+10,(int)(A0rect.top*blc)+10,
                    (int)(A0rect.right*blc)-10,(int)(A0rect.bottom*blc)-10);
                   
	pDC->MoveTo((int)(A0rect.left*blc)+10,(int)(A0rect.top*blc)+10);
	pDC->LineTo((int)(A0rect.right*blc)-10,(int)(A0rect.bottom*blc)-10);
	pDC->MoveTo((int)(A0rect.right*blc)-10,(int)(A0rect.top*blc)+10);
	pDC->LineTo((int)(A0rect.left*blc)+10,(int)(A0rect.bottom*blc)-10);
    
}

void CBlcView::OnInitialUpdate()
{
	CScrollView::OnInitialUpdate();
    m_WndStatusBar=(CStatusBar *)AfxGetApp()->GetMainWnd()->GetDescendantWindow(AFX_IDW_STATUS_BAR);
	CSize sizeTotal;
	m_CoorStr.Format("X坐标:%8d       mmY坐标:%8d     mm",m_CoorPoint.x,m_CoorPoint.y);
	m_WndStatusBar->SetPaneText(1,m_CoorStr);

	// TODO: calculate the total size of this view
	sizeTotal.cx=A0rect.right; sizeTotal.cy=A0rect.bottom;

	SetScrollSizes(MM_TEXT, sizeTotal);
}

/////////////////////////////////////////////////////////////////////////////
// CBlcView printing

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

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

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

/////////////////////////////////////////////////////////////////////////////
// CBlcView diagnostics

#ifdef _DEBUG
void CBlcView::AssertValid() const
{
	CScrollView::AssertValid();
}

void CBlcView::Dump(CDumpContext& dc) const
{
	CScrollView::Dump(dc);
}

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

/////////////////////////////////////////////////////////////////////////////
// CBlcView message handlers

void CBlcView::OnMax() 
{
	// TODO: Add your command handler code here
	CDC *dc=GetDC();
	CRect clientrect;
	CBrush brush(RGB(255,255,255));
	dc->GetWindow()->GetClientRect(&clientrect);
	dc->FillRect(&clientrect,&brush);
	dc->SetWindowOrg(0,0);
	dc->SetViewportOrg(0,0);
    blc=1.2*blc;
   OnDraw(dc);
  	ReleaseDC(dc);
}

void CBlcView::OnMin() 
{
	// TODO: Add your command handler code here
	CDC *dc=GetDC();
	CRect clientrect;
	CBrush brush(RGB(255,255,255));
	dc->GetWindow()->GetClientRect(&clientrect);
	dc->FillRect(&clientrect,&brush);
	dc->SetWindowOrg(0,0);
	dc->SetViewportOrg(0,0);
    blc=0.8*blc;
    OnDraw(dc);	
	ReleaseDC(dc);
}

void CBlcView::OnAll() 
{
	// TODO: Add your command handler code here
	double blc1;
	CDC *dc=GetDC();
	CRect clientrect;
	CBrush brush(RGB(255,255,255));
	dc->GetWindow()->GetClientRect(&clientrect);
	dc->FillRect(&clientrect,&brush);
	dc->SetWindowOrg(0,0);
	dc->SetViewportOrg(0,0);
	blc=914/(float)clientrect.right;
	blc1=1219/(float)clientrect.bottom;
	if(blc<blc1)
		blc=blc1;
	blc=1/blc;
	char m_blc[8];
	sprintf(m_blc,"%f",blc);
 //    AfxMessageBox(m_blc[8]);
   OnDraw(dc);
   ReleaseDC(dc);

}

void CBlcView::OnMouseMove(UINT nFlags, CPoint point) 
{
	// TODO: Add your message handler code here and/or call default
	CDC *pDC=GetDC();
	pDC->SetWindowOrg(0,0);
	pDC->SetViewportOrg(0,0);
	m_CoorPoint=point;
	m_CoorStr.Format("X:%8d        mm,Y:%8d          mm",m_CoorPoint.x,m_CoorPoint.y);
	m_WndStatusBar->SetPaneText(4,m_CoorStr);
	ReleaseDC(pDC);
	CScrollView::OnMouseMove(nFlags, point);
}

//DEL void CBlcView::GetCurrentPen()
//DEL {
//DEL 	CMainFrame * pMainFrm=(CMainFrame *)AfxGetApp()->GetMainWnd();
//DEL 	CComboBox *p_Com1=(CComboBox * )pMainFrm->m_wndDlgBar.GetDlgItem(IDC_COMBO1);
//DEL     int i=p_Com1->GetCurSel();
//DEL 	CComboBox *p_Com2=(CComboBox *)pMainFrm->m_wndDlgBar.GetDlgItem(IDC_COMBO2);
//DEL     int j=p_Com2->GetCurSel();
//DEL 	m_pen.CreatePen(2,2,RGB(0,0,0));
//DEL 	CDC *dc;
//DEL 	dc=GetDC();
//DEL 	dc->SelectObject(&m_pen);
//DEL }

CPen * CBlcView::GetCurrentPen1()
{
	CMainFrame * pMainFrm=(CMainFrame *)AfxGetApp()->GetMainWnd();
	CComboBox *p_Com1=(CComboBox * )pMainFrm->m_wndDlgBar.GetDlgItem(IDC_COMBO1);
    i=p_Com1->GetCurSel();
	CComboBox *p_Com2=(CComboBox *)pMainFrm->m_wndDlgBar.GetDlgItem(IDC_COMBO2);
    j=p_Com2->GetCurSel();
	CPen mypen;
	CPen * pen;
	pen=&mypen;
	mypen.CreatePen(i+1,j+1,RGB(128,0,128));
//	CDC *dc;
//	dc=GetDC();
//	dc->SelectObject(&m_pen);
//	dc->MoveTo(0,0);
//	dc->LineTo(400,400);
 //	CString string;
 //	string.Format("%d  %d",i+1,j+1);
 //	dc->TextOut(100,100,string);
    return pen;
}