void CLineGraph::Serialize(CArchive& ar)
{
if ( ar.IsStoring() )
{
ar << m_bShowAxis;
ar << m_bShowGrid;
ar << m_bShowLegend;
ar << m_nSpeed;
ar << m_nScale;
ar.WriteCount( GetItemCount() );
for ( POSITION pos = GetItemIterator() ; pos ; )
{
GetNextItem( pos )->Serialize( ar );
}
}
else
{
ar >> m_bShowAxis;
ar >> m_bShowGrid;
ar >> m_bShowLegend;
ar >> m_nSpeed;
ar >> m_nScale;
for ( int nCount = ar.ReadCount() ; nCount > 0 ; nCount-- )
{
CGraphItem* pItem = new CGraphItem();
pItem->Serialize( ar );
m_pItems.AddTail( pItem );
}
}
}
void CLineGraph::PaintGrid(CDC* pDC, CRect* pRect)
{
CPen* pOldPen = (CPen*)pDC->SelectObject( &m_pGridPen );
if ( pRect->Height() <= TOP_MARGIN ) return;
DWORD nScale = max( m_nScale, MIN_GRID_SIZE_HORZ );
DWORD nCount = pRect->Width() / nScale + 1;
DWORD nTimeB = nScale / m_nScale;
int nX = pRect->right + m_nScale - ( m_nUpdates % nTimeB ) * m_nScale;
for ( DWORD nPos = 0 ; nPos < nCount ; nPos++, nX -= nScale )
{
pDC->MoveTo( nX, pRect->top );
pDC->LineTo( nX, pRect->bottom );
}
BOOL bVolume = FALSE;
if ( m_bShowAxis )
{
for ( POSITION pos = GetItemIterator() ; pos && ! bVolume ; )
{
const CGraphItem* pItem = GetNextItem( pos );
const GRAPHITEM* pDesc = pItem->GetItemDesc( pItem->m_nCode );
if ( pDesc && pDesc->m_nUnits == 1 ) bVolume = TRUE;
}
pDC->SetTextColor( Colors.m_crTrafficWindowText );
}
nScale = m_nMinGridVert * m_nMaximum / ( pRect->Height() - TOP_MARGIN );
if ( ! nScale ) nScale = 1;
int nOldY = pRect->bottom;
for ( DWORD nPos = 1 ; ; nPos++ )
{
int nY = pRect->bottom - nScale * nPos * ( pRect->Height() - TOP_MARGIN ) / m_nMaximum;
if ( nY < 0 || nY >= nOldY - 4 ) break;
nOldY = nY;
pDC->MoveTo( pRect->left, nY );
pDC->LineTo( pRect->right, nY );
if ( m_bShowAxis )
{
CString strValue;
if ( bVolume )
strValue = Settings.SmartSpeed( nScale * nPos, bits );
else
strValue.Format( _T("%lu"), nScale * nPos );
pDC->ExtTextOut( pRect->left + 4, nY + 1, 0, NULL, strValue, NULL );
// Add the scale to the right side also
pDC->ExtTextOut( pRect->right - 4 - pDC->GetTextExtent( strValue ).cx, nY + 1, 0, NULL, strValue, NULL );
}
}
pDC->SelectObject( pOldPen );
}
void CLineGraph::Serialize(CArchive& ar)
{
if ( ar.IsStoring() )
{
ar << m_bShowAxis;
ar << m_bShowGrid;
ar << m_bShowLegend;
ar << m_nSpeed;
ar << max( m_nScale, MIN_GRID_SIZE_HORZ );
ar.WriteCount( GetItemCount() );
for ( POSITION pos = GetItemIterator() ; pos ; )
{
GetNextItem( pos )->Serialize( ar );
}
}
else // Loading
{
ar >> m_bShowAxis;
ar >> m_bShowGrid;
ar >> m_bShowLegend;
ar >> m_nSpeed;
ar >> m_nScale;
m_nScale = max( m_nScale, MIN_GRID_SIZE_HORZ );
for ( DWORD_PTR nCount = ar.ReadCount() ; nCount > 0 ; nCount-- )
{
CGraphItem* pItem = new CGraphItem();
pItem->Serialize( ar );
m_pItems.AddTail( pItem );
}
}
}
void CLineGraph::ClearItems()
{
for ( POSITION pos = GetItemIterator() ; pos ; )
{
delete GetNextItem( pos );
}
m_pItems.RemoveAll();
}
void CLineGraph::Clear()
{
for ( POSITION pos = GetItemIterator() ; pos ; )
{
GetNextItem( pos )->Clear();
}
m_nMaximum = 0;
}
void CLineGraph::PaintLegend(CDC* pDC, CRect* pRect)
{
int nHeight = pDC->GetTextExtent( _T("Cy") ).cy;
int nLeft = pRect->left + ( pRect->Width() > 128 ) ? 64 : 0;
int nTop = pRect->top + 1;
for ( POSITION pos = GetItemIterator() ; pos ; nTop += nHeight )
{
CGraphItem* pItem = GetNextItem( pos );
pDC->SetTextColor( pItem->m_nColour );
pDC->ExtTextOut( nLeft, nTop, 0, NULL, _T("• ") + pItem->m_sName, NULL );
}
}
void CLineGraph::ResetMaximum(BOOL bForce)
{
DWORD nMaximum = 0;
for ( POSITION pos = GetItemIterator() ; pos ; )
{
CGraphItem* pItem = GetNextItem( pos );
DWORD nValue = pItem->GetMaximum();
nMaximum = max( nMaximum, nValue );
}
if ( nMaximum || bForce ) m_nMaximum = nMaximum;
}
BOOL CLineGraph::Update()
{
DWORD tNow = GetTickCount();
if ( tNow - m_tLastScale > 10000 )
{
m_tLastScale = tNow;
ResetMaximum();
}
for ( POSITION pos = GetItemIterator() ; pos ; )
{
CGraphItem* pItem = GetNextItem( pos );
DWORD nValue = pItem->Update();
m_nMaximum = max( m_nMaximum, nValue );
}
m_nUpdates++;
return m_pItems.GetCount();
}
void CLineGraph::PaintLegend(CDC* pDC, CRect* pRect)
{
int nHeight = pDC->GetTextExtent( _T("Cy") ).cy;
int nLeft = pRect->left + ( ( pRect->Width() > 128 ) ? 64 : 0 );
int nTop = pRect->top + 1;
for ( POSITION pos = GetItemIterator() ; pos ; nTop += nHeight )
{
CGraphItem* pItem = GetNextItem( pos );
pDC->SetTextColor( pItem->m_nColor );
CString strText;
if ( pItem->m_nMultiplier != 1.0f )
strText.Format( L"%s (\x00D7%f)", (LPCTSTR)pItem->m_sName, pItem->m_nMultiplier );
else
strText = pItem->m_sName;
pDC->ExtTextOut( nLeft, nTop, 0, NULL, _T("\x2022 ") + strText, NULL );
}
}
void CLineGraph::Paint(CDC* pDC, CRect* pRect)
{
if ( m_pGridPen.m_hObject == NULL ) m_pGridPen.CreatePen( PS_SOLID, 1, m_crGrid );
DWORD nWidth = (DWORD)pRect->Width() / m_nScale + 2;
if ( pRect->Width() > 64 )
{
for ( POSITION pos = GetItemIterator() ; pos ; )
{
CGraphItem* pItem = GetNextItem( pos );
pItem->SetHistory( nWidth );
}
}
pDC->FillSolidRect( pRect, m_crBack );
if ( m_pItems.IsEmpty() || m_nMaximum == 0 ) return;
CFont* pOldFont = (CFont*)pDC->SelectObject( &theApp.m_gdiFont );
pDC->SetBkMode( TRANSPARENT );
if ( m_bShowGrid ) PaintGrid( pDC, pRect );
for ( POSITION pos = m_pItems.GetHeadPosition() ; pos ; )
{
CGraphItem* pItem = (CGraphItem*)m_pItems.GetNext( pos );
DWORD nPoints = min( pItem->m_nLength, nWidth );
POINT* pPoints = new POINT[ nPoints ];
for ( DWORD nPos = 0 ; nPos < nPoints ; nPos++ )
{
DWORD nValue = pItem->GetValueAt( nPos );
nValue = pRect->bottom - nValue * ( pRect->Height() - TOP_MARGIN ) / m_nMaximum;
pPoints[ nPos ].x = pRect->right - nPos * m_nScale - 1;
pPoints[ nPos ].y = nValue + 4;
}
pItem->MakeGradient( m_crBack );
CPen* pOldPen = (CPen*)pDC->SelectObject( &pItem->m_pPen[3] );
for ( int nLayer = 4 ; nLayer ; nLayer-- )
{
pDC->Polyline( pPoints, nPoints );
if ( nLayer > 1 )
{
for ( DWORD nPos = 0 ; nPos < nPoints ; nPos++ ) pPoints[ nPos ].y --;
pDC->SelectObject( &pItem->m_pPen[ nLayer - 2 ] );
}
}
pDC->SelectObject( pOldPen );
delete [] pPoints;
}
if ( m_bShowLegend ) PaintLegend( pDC, pRect );
pDC->SelectObject( pOldFont );
}
