Exemplo n.º 1
0
CSize CChartLegend::GetSize(CDC* pDC) const
{
	CSize LegendSize;
	CSize TextSize;

	if (!m_bIsVisible)
	{
		LegendSize.cx = LegendSize.cy = 0;
		return LegendSize;
	}

	CFont* pOldFont;
	CFont NewFont;
	NewFont.CreatePointFont(m_iFontSize, (LPCTSTR)m_strFontName.c_str(),pDC);
	pOldFont = pDC->SelectObject(&NewFont);

	int Height = 4;		//Upper space
	int Width = 0;		
	int MaxTextWidth = 0;

	size_t SeriesCount = m_pParent->GetSeriesCount();
	int Drawn = 0;
	for (size_t i=0;i<SeriesCount;i++)
	{
		CChartSerie* pSerie = m_pParent->GetSerie(i);
		if ( (pSerie->GetName() == _T("")) || !pSerie->IsVisible() )
			continue;

		Drawn++;
		CSize BitmapSize =pSerie->GetLegendSize();
		TextSize = pDC->GetTextExtent(pSerie->GetName().c_str());

		if (TextSize.cy>BitmapSize.cy)
			Height += TextSize.cy + 2;
		else
			Height += BitmapSize.cy + 2;

		if ( (TextSize.cx + BitmapSize.cx + 6)> MaxTextWidth)
			MaxTextWidth = TextSize.cx + BitmapSize.cx + 6;
	}

	if (!Drawn)
	{
		LegendSize.cx = LegendSize.cy = 0;
		return LegendSize;
	}

	Width += MaxTextWidth + 6;
	LegendSize.cx = Width;
	LegendSize.cy = Height+2;

	pDC->SelectObject(pOldFont);
	DeleteObject(NewFont);
	return LegendSize;
}
Exemplo n.º 2
0
void CChartLegend::Draw(CDC *pDC)
{
	if (!pDC->GetSafeHdc())
		return;
	if (!m_bIsVisible)
		return;

	int YPos = 2;
	int MaxBitmapWidth = 0;
	bool bDraw = false;

	size_t SeriesCount = m_pParent->GetSeriesCount();
	size_t i=0;
	for (i=0;i<SeriesCount;i++)
	{
		CChartSerie* pSerie = m_pParent->GetSerie(i);
		if ( (pSerie->GetName() == _T("")) || !pSerie->IsVisible() )
			continue;

		bDraw = true;
		CSize BitmapSize = pSerie->GetLegendSize();
		if (BitmapSize.cx > MaxBitmapWidth)
			MaxBitmapWidth = BitmapSize.cx;
	}

	if (!bDraw)
		return;

	CPen SolidPen(PS_SOLID,0,RGB(0,0,0));
	CPen* pOldPen;
	CFont* pOldFont;
	CFont NewFont;
	NewFont.CreatePointFont(m_iFontSize,(LPCTSTR)m_strFontName.c_str(),pDC);

	//Fill back color
	CBrush m_BrushBack;
	m_BrushBack.CreateSolidBrush(m_ObjectColor) ;
	pDC->FillRect(m_ObjectRect,&m_BrushBack);
	COLORREF OldColor = pDC->SetBkColor(m_ObjectColor);

	pOldFont = pDC->SelectObject(&NewFont);
	pOldPen = pDC->SelectObject(&SolidPen);

	//Draw rectangle:
	pDC->MoveTo(m_ObjectRect.left,m_ObjectRect.top);
	pDC->LineTo(m_ObjectRect.right,m_ObjectRect.top);
	pDC->LineTo(m_ObjectRect.right,m_ObjectRect.bottom);
	pDC->LineTo(m_ObjectRect.left,m_ObjectRect.bottom);
	pDC->LineTo(m_ObjectRect.left,m_ObjectRect.top);

	CPoint UpperLeft;
	UpperLeft.x = m_ObjectRect.left;
	UpperLeft.y = m_ObjectRect.top + 4;
	for (i=0;i<SeriesCount;i++)
	{
		CChartSerie* pSerie = m_pParent->GetSerie(i);

		int NewHeight = pSerie->DrawLegend(pDC,UpperLeft,MaxBitmapWidth);
		UpperLeft.y += NewHeight+2;
	}

	pDC->SelectObject(pOldFont);
	DeleteObject(NewFont);
	pDC->SelectObject(pOldPen);
	DeleteObject(SolidPen);
	pDC->SetBkColor(OldColor);
}