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;
}
void CChartLegend::Draw(CDC *pDC)
{
if (!pDC->GetSafeHdc())
return;
if (!m_bIsVisible)
return;
if (m_ObjectRect.IsRectEmpty())
return;
CPen SolidPen(PS_SOLID,0,RGB(0,0,0));
CPen* pOldPen;
CFont* pOldFont;
CFont NewFont;
NewFont.CreatePointFont(m_iFontSize,m_strFontName.c_str(),pDC);
// Draw the shadow
if (m_bShadow)
{
CRect ShadowRect = m_ObjectRect;
ShadowRect.OffsetRect(m_iShadowDepth,m_iShadowDepth);
CBrush BrushShadow;
BrushShadow.CreateSolidBrush(m_ShadowColor) ;
pDC->FillRect(ShadowRect,&BrushShadow);
}
if (!m_bIsTransparent)
{
//Fill back color
CBrush BrushBack;
BrushBack.CreateSolidBrush(m_ObjectColor) ;
pDC->FillRect(m_ObjectRect,&BrushBack);
}
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);
int iPrevMode = pDC->SetBkMode(TRANSPARENT);
CRect rectBitmap(m_ObjectRect.left+2,m_ObjectRect.top+5,
m_ObjectRect.left+2+m_BitmapSize.cx,
m_ObjectRect.top+6+m_BitmapSize.cy);
int SeriesCount = m_pParent->GetSeriesCount();
for (int i=0;i<SeriesCount;i++)
{
CChartSerie* pSerie = m_pParent->GetSerie(i);
if ( (pSerie->GetName() == _T("")) || !pSerie->IsVisible() )
continue;
int MaxHeight = 0;
CSize TextSize = pDC->GetTextExtent(pSerie->GetName().c_str());
if (TextSize.cy > m_BitmapSize.cy)
{
pDC->ExtTextOut(rectBitmap.right+4,rectBitmap.top,ETO_CLIPPED,NULL,pSerie->GetName().c_str(),NULL);
CRect rectTemp(rectBitmap);
int YOffset = TextSize.cy/2 - rectBitmap.Height()/2;
rectTemp.OffsetRect(0,YOffset);
pSerie->DrawLegend(pDC,rectTemp);
MaxHeight = TextSize.cy;
}
else
{
int YOffset = rectBitmap.CenterPoint().y - TextSize.cy/2;
pDC->ExtTextOut(rectBitmap.right+4,YOffset,ETO_CLIPPED,NULL,pSerie->GetName().c_str(),NULL);
MaxHeight = m_BitmapSize.cy;
pSerie->DrawLegend(pDC,rectBitmap);
}
if (!m_bIsHorizontal)
rectBitmap.OffsetRect(0,MaxHeight+2);
else
rectBitmap.OffsetRect(m_BitmapSize.cx+4+TextSize.cx+10,0);
}
pDC->SetBkMode(iPrevMode);
pDC->SelectObject(pOldFont);
DeleteObject(NewFont);
pDC->SelectObject(pOldPen);
DeleteObject(SolidPen);
}
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);
}
void CChartLegend::UpdatePosition(CDC* pDC, const CRect& rcControl)
{
CRect NewPosition;
NewPosition.SetRectEmpty();
if (!m_bIsVisible)
{
SetRect(NewPosition);
return;
}
CFont* pOldFont;
CFont NewFont;
NewFont.CreatePointFont(m_iFontSize,m_strFontName.c_str(),pDC);
pOldFont = pDC->SelectObject(&NewFont);
int Height = 0;
int Width = 0;
int MaxText = 0;
CSize TextSize;
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++;
TextSize = pDC->GetTextExtent(pSerie->GetName().c_str());
if (!m_bIsHorizontal)
{
if (TextSize.cy>m_BitmapSize.cy)
Height += TextSize.cy + 2;
else
Height += m_BitmapSize.cy + 2;
if (TextSize.cx > MaxText)
MaxText = TextSize.cx;
}
else
{
Width += TextSize.cx + 4 + m_BitmapSize.cx + 10;
if (TextSize.cy > MaxText)
MaxText = TextSize.cy;
}
}
pDC->SelectObject(pOldFont);
DeleteObject(NewFont);
if (!Drawn)
{
SetRect(NewPosition);
return;
}
if (!m_bIsHorizontal)
{
Width += MaxText + m_BitmapSize.cx + 12;
Height += 4 + 4 - 2; // Top and bottom margins. -2 because space counted once too much
}
else
{
Width += 2 + 2 - 10;
Height = 4 + max(m_BitmapSize.cy,MaxText) + 4;
}
if (!m_bDocked)
{
NewPosition.top = m_iTopPos;
NewPosition.left = m_iLeftPos;
NewPosition.bottom = m_iTopPos + Height + 2;
NewPosition.right = m_iLeftPos + Width;
}
else
{
switch (m_DockSide)
{
case dsDockRight:
NewPosition.top = ((rcControl.bottom-rcControl.top)/2) - ((Height + 2)/2);
NewPosition.left = rcControl.right - (Width + 6);
NewPosition.bottom = NewPosition.top + Height;
NewPosition.right = NewPosition.left + Width;
break;
case dsDockLeft:
NewPosition.top = ((rcControl.bottom-rcControl.top)/2) - ((Height + 2)/2);
NewPosition.left = rcControl.left + 3;
NewPosition.bottom = NewPosition.top + Height;
NewPosition.right = NewPosition.left + Width;
break;
case dsDockTop:
NewPosition.top = rcControl.top + 3; //((rcControl.bottom-rcControl.top)/2) - ((Height + 2)/2);
NewPosition.left = ((rcControl.right-rcControl.left)/2) - (Width/2); // rcControl.left + 3;
NewPosition.bottom = NewPosition.top + Height;
NewPosition.right = NewPosition.left + Width;
break;
case dsDockBottom:
NewPosition.top = rcControl.bottom - (Height + 2); //((rcControl.bottom-rcControl.top)/2) - ((Height + 2)/2);
NewPosition.left = ((rcControl.right-rcControl.left)/2) - (Width/2); // rcControl.left + 3;
NewPosition.bottom = NewPosition.top + Height;
NewPosition.right = NewPosition.left + Width;
break;
}
}
SetRect(NewPosition);
}