bufferdlg.cpp

GIS地理信息系统开发。大名鼎鼎的MAPX＋C++软件开发

// BufferDlg.cpp : implementation file
//
/*
 * This sample application and corresponding sample code is provided for 
 * example purposes only.  It has not undergone rigorous testing and as 
 * such should not be shipped as part of a final application without 
 * extensive testing on the part of the organization releasing the 
 * end-user product. 
 */

#include "stdafx.h"
#include "MapTest.h"
#include "BufferDlg.h"
#include "Mapx.h"


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

/////////////////////////////////////////////////////////////////////////////
// CBufferDlg dialog


CBufferDlg::CBufferDlg(CWnd* pParent /*=NULL*/)
	: CDialog(CBufferDlg::IDD, pParent)
{
	//{{AFX_DATA_INIT(CBufferDlg)
	m_Distance = 0;
	//}}AFX_DATA_INIT
}


void CBufferDlg::DoDataExchange(CDataExchange* pDX)
{
	CDialog::DoDataExchange(pDX);
	//{{AFX_DATA_MAP(CBufferDlg)
	DDX_Text(pDX, IDC_EDITDISTANCE, m_Distance);
	DDV_MinMaxInt(pDX, m_Distance, 1, 1000);
	//}}AFX_DATA_MAP
	DDX_Control(pDX, IDC_LISTOUTLETS, m_chkListBox);
	
} 

BEGIN_MESSAGE_MAP(CBufferDlg, CDialog)
	//{{AFX_MSG_MAP(CBufferDlg)
	ON_BN_CLICKED(IDC_MILES, OnMiles)
	ON_BN_CLICKED(IDC_KILOMETERS, OnKilometers)
	ON_NOTIFY(UDN_DELTAPOS, IDC_SPINDISTANCE, OnDeltaposSpindistance)
	//}}AFX_MSG_MAP
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CBufferDlg message handlers

void CBufferDlg::InitListBox()
{
	CMapXLayer outletLyr;
	
	m_chkListBox.ResetContent();   //Empty the contents of the list box.

	if (!m_pMap->GetLayers().Item("Outlets")){//If the "Outlets" layer isn't there, do not 
		return;									//go any further.
	}

	try {
		m_outletFtrs = m_pMap->GetLayers().Item("Outlets").AllFeatures();
		//m_outletFtrs is set equal to the features of the "Outlets" layer
		outletLyr = m_pMap->GetLayers().Item("Outlets");
		//outletLyr is set equal to the "Outlets" layer
		outletLyr.SetKeyField("Store_Name");
		//Change the keyfield of outletLyr equal to "Store_Name" the second column
		// in the Outlets.tab file

		for (int i = 1; i <= m_outletFtrs.GetCount(); i++){
			CString ftrName = m_outletFtrs.Item(i).GetKeyValue(); //Get the keyvalue
			int n = m_chkListBox.AddString(ftrName);	//Add it to the listbox
			m_chkListBox.SetItemData(n, (DWORD)i);
		}
	} catch (COleDispatchException *e) {
		e->ReportError();
		e->Delete();
	} catch (COleException *e) {
		e->ReportError();
		e->Delete();
	}
}

BOOL CBufferDlg::OnInitDialog() 
{
	CSpinButtonCtrl* pSpin;
	
	CDialog::OnInitDialog();
	ASSERT(m_pMap);


	InitListBox();
	CheckDlgButton(IDC_MILES, 1);
	m_Units = miUnitMile;

	pSpin = (CSpinButtonCtrl*)GetDlgItem(IDC_SPINDISTANCE);
	pSpin->SetRange(1, 1000);
	pSpin->SetPos(140);

	m_Distance = 140;
	UpdateData(true);

	return TRUE;  // return TRUE unless you set the focus to a control
	              // EXCEPTION: OCX Property Pages should return FALSE
}

void CBufferDlg::OnMiles() 
{
	m_Units = miUnitMile;  //Sets the units variable equal to miles.
}

void CBufferDlg::OnKilometers() 
{
	m_Units = miUnitKilometer;
}

void CBufferDlg::OnOK() 
{
	CCheckListBox* pLstOutlets = (CCheckListBox*)GetDlgItem(IDC_LISTOUTLETS); // The list of outlets

	if(!CBufferDlg::UpdateData(TRUE))
		return;

	//This layer will hold the buffers that the user creates around the outlets.
	CMapXLayer outletBuffLyr = m_pMap->GetLayers().CreateLayer("Outlet Buffer",NULL,3);
	
	for(int counter = 0; counter < pLstOutlets->GetCount(); counter++) {
		if(pLstOutlets->GetCheck(counter) == BST_CHECKED) {
			//"outletFtr" is the buffer we create around our outlet.  Since the indexes of the items selected from the list box
			// are 1 less than the actual outlet item #'s, we need to increment the counter.
			CMapXFeature outletFtr = m_pMap->GetFeatureFactory().BufferFeatures(m_outletFtrs.Item(counter+1), m_Distance, m_Units);
			outletBuffLyr.AddFeature(outletFtr); //Add the buffer feature, outletFtr, to the outletBuffLyr.
		}
	}

	CMapXStyle lyrStyle = outletBuffLyr.GetStyle();
	//"lyrStyle" will hold the style of the newly created "Outlet Buffer" layer 

	outletBuffLyr.SetOverrideStyle(TRUE); //Allow us to override the style of the "Outlet Buffer" layer 
	lyrStyle.SetRegionTransparent(TRUE);  //Sets the region created by the buffer to be transparent
	lyrStyle.SetRegionBorderWidth(5);		//Set the border width of the buffer to be 5
	lyrStyle.SetRegionPattern(0);		//Set the region pattern to be no fill
	lyrStyle.SetRegionBorderColor(miColorBlue);	//Set the color of the border to be Blue

	m_pMap->Refresh();	//display the changes we made
	CDialog::OnOK();	
}

void CBufferDlg::OnDeltaposSpindistance(NMHDR* pNMHDR, LRESULT* pResult) 
{
	NM_UPDOWN* pNMUpDown = (NM_UPDOWN*)pNMHDR;

	if(!UpdateData(true))
		return;

	m_Distance += pNMUpDown->iDelta;

	if(m_Distance > 1000)
		m_Distance = 1000;
	if(m_Distance < 1)
		m_Distance = 1;

	UpdateData(false);
	*pResult = 0;
}