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Diffstat (limited to 'plugins/Quotes/src/Chart.h')
| -rw-r--r-- | plugins/Quotes/src/Chart.h | 280 |
1 files changed, 280 insertions, 0 deletions
diff --git a/plugins/Quotes/src/Chart.h b/plugins/Quotes/src/Chart.h new file mode 100644 index 0000000000..62a658d818 --- /dev/null +++ b/plugins/Quotes/src/Chart.h @@ -0,0 +1,280 @@ +#ifndef __FAE7F26E_61ED_4951_BE87_5E022CDF21DF_Chart_h__
+#define __FAE7F26E_61ED_4951_BE87_5E022CDF21DF_Chart_h__
+
+#pragma once
+
+namespace detail
+{
+ template<class T> struct CConverter
+ {
+ static double Convert(const T& v)
+ {
+ return boost::numeric_cast<double>(v);
+ }
+
+ static tstring ToString(const T& v)
+ {
+ return boost::lexical_cast<tstring>(v);
+ }
+ };
+
+ template<> struct CConverter<double>
+ {
+ static double Convert(double v)
+ {
+ return v;
+ }
+
+ static tstring ToString(double v)
+ {
+ tostringstream s;
+ s.imbue(std::locale(""));
+ s << std::fixed << v;
+ return s.str();
+ }
+ };
+}
+
+template<class TXValue,class TYValue,class TXConverter = detail::CConverter<TXValue>,class TYConverter = detail::CConverter<TYValue> >
+class CChart
+{
+private:
+ typedef std::pair<TXValue,TYValue> TValue;
+ typedef std::vector<TValue> TValues;
+
+public:
+ CChart() : m_MaxY(),m_MinY()
+ {
+ ZeroMemory(&m_rect,sizeof(m_rect));
+ }
+
+ ~CChart()
+ {
+ }
+
+ void AddValue(const TXValue& x,const TYValue& y)
+ {
+ if(m_aValues.empty())
+ {
+ m_MaxY = m_MinY = y;
+ }
+ else
+ {
+ m_MaxY = __max(y,m_MaxY);
+ m_MinY = __min(y,m_MinY);
+ }
+ m_aValues.push_back(std::make_pair(x,y));
+ }
+
+ void SetRect(int x,int y,int cx,int cy)
+ {
+ m_rect.left = x;
+ m_rect.right = x + cx;
+ m_rect.top = y;
+ m_rect.bottom = y + cy;
+ }
+
+ void Draw(HDC hdc)const
+ {
+ RECT rc = m_rect;
+ DrawBackground(hdc,rc);
+ if(false == m_aValues.empty())
+ {
+ ::InflateRect(&rc,-10,-10);
+ DrawGrid(hdc,rc);
+ DrawAxis(hdc,rc);
+ DrawPoints(hdc,rc);
+ }
+ else
+ {
+ HFONT hFont = static_cast<HFONT>(::GetStockObject(DEFAULT_GUI_FONT));
+ HFONT hOldFont = static_cast<HFONT>(::SelectObject(hdc,hFont));
+
+ LPCTSTR pszText = TranslateT("There is no to show");
+ int nDrawTextResult = ::DrawText(hdc,pszText,::lstrlen(pszText),&rc,DT_SINGLELINE|DT_VCENTER|DT_CENTER);
+ assert(0 != nDrawTextResult);
+
+ ::SelectObject(hdc,hOldFont);
+ BOOL bResult = ::DeleteObject(hFont);
+ assert(TRUE == bResult);
+ }
+ }
+
+private:
+ void DrawBackground(HDC hdc,RECT& rc)const
+ {
+// HBRUSH hBrush = ::CreateSolidBrush(RGB(255,0,0));//user preferable background color here!
+// ::FillRect(hdc,&m_rect,hBrush);
+// ::DeleteBrush(hBrush);
+ }
+
+ void DrawGrid(HDC hdc,RECT& rc)const
+ {
+ enum{number_of_lines = 5};
+ HPEN hPen = ::CreatePen(PS_SOLID,1,RGB(125,125,125));
+ HPEN hPenOld = static_cast<HPEN>(::SelectObject(hdc,hPen));
+ HFONT hFont = static_cast<HFONT>(::GetStockObject(DEFAULT_GUI_FONT));
+ HFONT hOldFont = static_cast<HFONT>(::SelectObject(hdc,hFont));
+
+ //vertical grid
+ int step = (rc.bottom-rc.top)/number_of_lines;
+ TYValue y_val = m_MinY + ((m_MaxY-m_MinY)/number_of_lines);
+ int nXIndent = 0;
+ for(int y = rc.bottom-step;y > rc.top;y-=step,y_val+=((m_MaxY-m_MinY)/number_of_lines))
+ {
+ tstring sY = TYConverter::ToString(y_val);
+ SIZE sizeText = {0,0};
+ BOOL bResult = ::GetTextExtentPoint32(hdc,sY.c_str(), (int)sY.size(), &sizeText);
+ assert(TRUE == bResult);
+ nXIndent = __max(nXIndent,sizeText.cx);
+ }
+
+ y_val = m_MinY + ((m_MaxY-m_MinY)/number_of_lines);
+ nXIndent += 2;
+ rc.left += nXIndent;
+ for(int y = rc.bottom-step;y > rc.top;y-=step,y_val+=((m_MaxY-m_MinY)/number_of_lines))
+ {
+ tstring sY = TYConverter::ToString(y_val);
+ SIZE sizeText = {0,0};
+ BOOL bResult = ::GetTextExtentPoint32(hdc, sY.c_str(), (int)sY.size(), &sizeText);
+ assert(TRUE == bResult);
+
+ RECT rcText = {rc.left-nXIndent,y-(sizeText.cy/2),rc.left-1,y+(sizeText.cy/2)};
+ int nDrawTextResult = ::DrawText(hdc, sY.c_str(), (int)sY.size(), &rcText, DT_SINGLELINE|DT_VCENTER|DT_RIGHT);
+ assert(0 != nDrawTextResult);
+
+ bResult = ::MoveToEx(hdc,rc.left,y,NULL);
+ assert(TRUE == bResult);
+
+ bResult = ::LineTo(hdc,rc.right,y);
+ assert(TRUE == bResult);
+ }
+
+ // horizontal grid
+ HRGN rgnAllLables = ::CreateRectRgn(0,0,0,0);
+ HRGN rgnTemporary = ::CreateRectRgn(0,0,0,0);
+ bool bFixedRect = false;
+ step = (rc.right-rc.left)/number_of_lines;
+ TXValue x_val = m_aValues[0].first + ((m_aValues[m_aValues.size()-1].first-m_aValues[0].first)/number_of_lines);
+ for(int x = rc.left+step;x < rc.right;x+=step,x_val+=((m_aValues[m_aValues.size()-1].first-m_aValues[0].first)/number_of_lines))
+ {
+ tstring sX = TXConverter::ToString(x_val);
+ SIZE sizeText = {0,0};
+ BOOL bResult = ::GetTextExtentPoint32(hdc, sX.c_str(), (int)sX.size(), &sizeText);
+ assert(TRUE == bResult);
+
+ if(false == bFixedRect)
+ {
+ rc.bottom -= sizeText.cy+2;
+ bFixedRect = true;
+ }
+
+ RECT rcText = {x-(sizeText.cx/2),rc.bottom,x+(sizeText.cx/2),rc.bottom+sizeText.cy-1};
+ // Draw a label if it doesn't overlap with previous ones
+ HRGN rgnCurrentLable = ::CreateRectRgnIndirect(&rcText);
+ if(NULLREGION == ::CombineRgn(rgnTemporary,rgnCurrentLable,rgnAllLables,RGN_AND))
+ {
+ int nDrawTextResult = ::DrawText(hdc, sX.c_str(), (int)sX.size(), &rcText, DT_SINGLELINE|DT_VCENTER|DT_CENTER);
+ assert(0 != nDrawTextResult);
+ int nCombineRgnResult = ::CombineRgn(rgnTemporary,rgnCurrentLable,rgnAllLables,RGN_OR);
+ assert(ERROR != nCombineRgnResult);
+ nCombineRgnResult = ::CombineRgn(rgnAllLables,rgnTemporary,NULL,RGN_COPY);
+ assert(ERROR != nCombineRgnResult);
+ }
+ bResult = ::DeleteObject(rgnCurrentLable);
+ assert(TRUE == bResult);
+
+ bResult = ::MoveToEx(hdc,x,rc.bottom,NULL);
+ assert(TRUE == bResult);
+
+ bResult = ::LineTo(hdc,x,rc.top);
+ assert(TRUE == bResult);
+ }
+
+ BOOL bResult = ::DeleteObject(rgnAllLables);
+ assert(TRUE == bResult);
+ bResult = ::DeleteObject(rgnTemporary);
+ assert(TRUE == bResult);
+
+ ::SelectObject(hdc,hOldFont);
+ ::SelectObject(hdc,hPenOld);
+ bResult = ::DeleteObject(hFont);
+ assert(TRUE == bResult);
+ bResult = ::DeleteObject(hPen);
+ assert(TRUE == bResult);
+ }
+
+ void DrawAxis(HDC hdc,RECT& rc)const
+ {
+ HPEN hPen = ::CreatePen(PS_SOLID,2,RGB(0,0,0));
+ HPEN hPenOld = static_cast<HPEN>(::SelectObject(hdc,hPen));
+
+ // draw Y-axes
+ BOOL bResult = ::MoveToEx(hdc,rc.left+1,rc.bottom-1,NULL);
+ assert(TRUE == bResult);
+ bResult = ::LineTo(hdc,rc.left+1,rc.top+1);
+ assert(TRUE == bResult);
+
+ // draw X-axes
+ bResult = ::MoveToEx(hdc,rc.left+1,rc.bottom-1,NULL);
+ assert(TRUE == bResult);
+ bResult = ::LineTo(hdc,rc.right-1,rc.bottom-1);
+ assert(TRUE == bResult);
+
+ ::SelectObject(hdc,hPenOld);
+ bResult = ::DeleteObject(hPen);
+ assert(TRUE == bResult);
+ }
+
+ void DrawPoints(HDC hdc,RECT& rc)const
+ {
+ TXValue xMin(m_aValues[0].first);
+ double dx = TXConverter::Convert(m_aValues[m_aValues.size()-1].first-xMin);
+ double dY = TYConverter::Convert(m_MaxY-m_MinY);
+
+ HPEN hPen = ::CreatePen(PS_SOLID,1,RGB(255,0,0));
+ HGDIOBJ hPenOld = ::SelectObject(hdc,hPen);
+
+ HBRUSH hBrush = ::CreateSolidBrush(RGB(255,0,0));
+ HGDIOBJ hBrushOld = ::SelectObject(hdc,hBrush);
+
+ bool bPrevValid = false;
+ int xPrex,yPrev;
+
+ BOOST_FOREACH(const TValue& v,m_aValues)
+ {
+ double k = TXConverter::Convert(v.first-xMin);
+
+ int x = rc.left+boost::numeric_cast<int>((rc.right-rc.left)*(k/dx));
+ k = TYConverter::Convert(v.second-m_MinY);
+ int y = rc.bottom-boost::numeric_cast<int>((rc.bottom-rc.top)*(k/dY));
+ ::Ellipse(hdc,x-5,y-5,x+5,y+5);
+ if(bPrevValid)
+ {
+ BOOL bResult = ::MoveToEx(hdc,xPrex,yPrev,NULL);
+ assert(TRUE == bResult);
+ bResult = ::LineTo(hdc,x,y);
+ assert(TRUE == bResult);
+ }
+
+ xPrex = x,yPrev = y;
+ bPrevValid = true;
+ }
+
+ ::SelectObject(hdc,hPenOld);
+ BOOL bResult = ::DeleteObject(hPen);
+ assert(TRUE == bResult);
+
+ ::SelectObject(hdc,hBrushOld);
+ bResult = ::DeleteObject(hBrush);
+ assert(TRUE == bResult);
+ }
+
+private:
+ TValues m_aValues;
+ RECT m_rect;
+ TYValue m_MaxY;
+ TYValue m_MinY;
+};
+
+#endif // __FAE7F26E_61ED_4951_BE87_5E022CDF21DF_Chart_h__
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