www.pudn.com > OSDemo.rar > GraphLegend.cpp

//GraphLegend.cpp - Version 3.0 (Brian Convery, May, 2001) 
 
#include "stdafx.h" 
#include "GraphLegend.h" 
#include "GraphLegendSet.h" 
 
#ifdef _DEBUG 
#define new DEBUG_NEW 
#undef THIS_FILE 
static char THIS_FILE[] = __FILE__; 
#endif 
 
///////////////////////////////////////////////////////////////////////////// 
// CGraphLegend 
 
CGraphLegend::CGraphLegend() 
{ 
	legendLabels = new CObList(); 
	legendLength = 0; 
 
} 
 
CGraphLegend::~CGraphLegend() 
{ 
	POSITION pos; 
	CGraphLegendSet *legendSet; 
	pos = legendLabels->GetHeadPosition(); 
	while(pos != NULL) 
	{ 
		legendSet = (CGraphLegendSet*)legendLabels->GetAt(pos); 
		legendLabels->RemoveAt(pos); 
		delete legendSet; 
	} 
	delete legendLabels; 
} 
 
 
BEGIN_MESSAGE_MAP(CGraphLegend, CStatic) 
	//{{AFX_MSG_MAP(CGraphLegend) 
		// NOTE - the ClassWizard will add and remove mapping macros here. 
	//}}AFX_MSG_MAP 
END_MESSAGE_MAP() 
 
///////////////////////////////////////////////////////////////////////////// 
// CGraphLegend message handlers 
 
void CGraphLegend::SetLegendText(int datagroup, CString label) 
{ 
	CGraphLegendSet *legendData = new CGraphLegendSet(); 
	legendData->SetLegendLabel(datagroup, label); 
	legendLabels->AddTail(legendData); 
	if(label.GetLength() > legendLength) 
		legendLength = label.GetLength(); 
} 
 
CString CGraphLegend::GetLegendText(int datagroup) 
{ 
	POSITION pos; 
	CGraphLegendSet *legendData; 
	if((legendLabels->GetCount() < datagroup) || (legendLabels->GetCount() == 0)) 
		return ""; 
	pos = legendLabels->GetHeadPosition(); 
	for(int i = 0; i < datagroup; i++) 
		legendLabels->GetNext(pos); 
	legendData = (CGraphLegendSet*)legendLabels->GetAt(pos); 
	return legendData->GetLegendLabel(); 
} 
 
int CGraphLegend::GetLegendLength() 
{ 
	return legendLength; 
} 
 
void CGraphLegend::Remove(int dataGroup) 
{ 
	POSITION pos; 
	CGraphLegendSet *legendSet; 
	pos = legendLabels->GetHeadPosition(); 
	for(int i = 0; i < dataGroup; i++) 
	{ 
		legendSet = (CGraphLegendSet*)legendLabels->GetAt(pos); 
		legendLabels->GetNext(pos); 
	} 
	legendLabels->RemoveAt(pos); 
	delete legendSet; 
} 
 
void CGraphLegend::RemoveAll() 
{ 
	POSITION pos; 
	CGraphLegendSet *legendSet; 
	pos = legendLabels->GetHeadPosition(); 
	while(pos != NULL) 
	{ 
		legendSet = (CGraphLegendSet*)legendLabels->GetAt(pos); 
		legendLabels->RemoveAt(pos); 
		delete legendSet; 
	} 
}