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High-speed-Charting-Control/ChartDemo/ChartCtrl/ChartPointsSerie.cpp

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/*
*
* ChartPointsSerie.cpp
*
* Written by Cédric Moonen (cedric_moonen@hotmail.com)
*
*
*
* This code may be used for any non-commercial and commercial purposes in a compiled form.
* The code may be redistributed as long as it remains unmodified and providing that the
* author name and this disclaimer remain intact. The sources can be modified WITH the author
* consent only.
*
* This code is provided without any garanties. I cannot be held responsible for the damage or
* the loss of time it causes. Use it at your own risks
*
* An e-mail to notify me that you are using this code is appreciated also.
*
*
* History:
* - 07/07/2008: Last point of the series was not displayed. Fixed.
*/
#include "stdafx.h"
#include "ChartPointsSerie.h"
#include "ChartCtrl.h"
#include "Math.h"
#ifdef _DEBUG
#undef THIS_FILE
static char THIS_FILE[]=__FILE__;
#define new DEBUG_NEW
#endif
//////////////////////////////////////////////////////////////////////
// Construction/Destruction
//////////////////////////////////////////////////////////////////////
CChartPointsSerie::CChartPointsSerie(CChartCtrl* pParent)
: CChartXYSerie(pParent), m_iPointType(ptEllipse), m_iXPointSize(5),
m_iYPointSize(5), m_colBorder(RGB(0,0,0))
{
}
CChartPointsSerie::~CChartPointsSerie()
{
}
void CChartPointsSerie::SetPointSize(int XSize, int YSize)
{
m_iXPointSize = XSize;
m_iYPointSize = YSize;
m_pParentCtrl->RefreshCtrl();
}
void CChartPointsSerie::SetPointType(PointType Type)
{
m_iPointType = Type;
m_pParentCtrl->RefreshCtrl();
}
void CChartPointsSerie::SetBorderColor(COLORREF Color)
{
m_colBorder = Color;
m_pParentCtrl->RefreshCtrl();
}
void CChartPointsSerie::Draw(CDC *pDC)
{
if (!m_bIsVisible)
return;
if (!pDC->GetSafeHdc())
return;
CBrush NewBrush(m_SerieColor);
CPen BorderPen(PS_SOLID, 1, m_colBorder);
CBrush ShadowBrush(m_ShadowColor);
CPen ShadowPen(PS_SOLID, 1, m_ShadowColor);
CPen* pOldPen = pDC->SelectObject(&BorderPen);
CBrush* pOldBrush = pDC->SelectObject(&NewBrush);
pDC->SetBkMode(TRANSPARENT);
//To have lines limited in the drawing rectangle :
pDC->IntersectClipRect(m_PlottingRect);
//Draw all points that haven't been drawn yet
for (m_uLastDrawnPoint;m_uLastDrawnPoint<(int)GetPointsCount();m_uLastDrawnPoint++)
{
SChartXYPoint Point = GetPoint(m_uLastDrawnPoint);
CPoint ScreenPoint;
ValueToScreen(Point.X, Point.Y, ScreenPoint);
CRect PointRect;
PointRect.SetRect(ScreenPoint.x-m_iXPointSize/2,ScreenPoint.y-m_iYPointSize/2,ScreenPoint.x+m_iXPointSize/2,ScreenPoint.y+m_iYPointSize/2);
CRect ShadowRect = PointRect + CSize(m_iShadowDepth,m_iShadowDepth);
switch(m_iPointType)
{
case ptEllipse:
if (m_bShadow)
{
pOldPen = pDC->SelectObject(&ShadowPen);
pDC->SelectObject(&ShadowBrush);
pDC->Ellipse(ShadowRect);
pDC->SelectObject(&NewBrush);
pDC->SelectObject(&BorderPen);
}
pDC->Ellipse(PointRect);
break;
case ptRectangle:
if (m_bShadow)
{
pOldPen = pDC->SelectObject(&ShadowPen);
pDC->SelectObject(&ShadowBrush);
pDC->Rectangle(ShadowRect);
pDC->SelectObject(&NewBrush);
pDC->SelectObject(&BorderPen);
}
pDC->Rectangle(PointRect);
break;
case ptTriangle:
{
CPoint TrPoints[3];
TrPoints[0].x = PointRect.left;
TrPoints[0].y = PointRect.bottom;
TrPoints[1].x = PointRect.right;
TrPoints[1].y = PointRect.bottom;
TrPoints[2].x = PointRect.left + (int)fabs((PointRect.left-PointRect.right)/2.0);
TrPoints[2].y = PointRect.top;
if (m_bShadow)
{
CPoint ShadowPoints[3];
for (int i=0;i<3;i++)
{
ShadowPoints[i] = TrPoints[i] + CSize(m_iShadowDepth,m_iShadowDepth);
}
pOldPen = pDC->SelectObject(&ShadowPen);
pDC->SelectObject(&ShadowBrush);
pDC->Polygon(ShadowPoints,3);
pDC->SelectObject(&NewBrush);
pDC->SelectObject(&BorderPen);
}
pDC->Polygon(TrPoints,3);
}
break;
}
}
pDC->SelectClipRgn(NULL);
pDC->SelectObject(pOldPen);
pDC->SelectObject(pOldBrush);
DeleteObject(BorderPen);
DeleteObject(NewBrush);
DeleteObject(ShadowBrush);
DeleteObject(ShadowPen);
}
void CChartPointsSerie::DrawAll(CDC *pDC)
{
if (!m_bIsVisible)
return;
if (!pDC->GetSafeHdc())
return;
CBrush NewBrush(m_SerieColor);
CPen BorderPen(PS_SOLID, 1, m_colBorder);
CBrush ShadowBrush(m_ShadowColor);
CPen ShadowPen(PS_SOLID, 1, m_ShadowColor);
CPen* pOldPen = pDC->SelectObject(&BorderPen);
CBrush* pOldBrush = pDC->SelectObject(&NewBrush);
unsigned uFirst=0, uLast=0;
if (!GetVisiblePoints(uFirst,uLast))
return;
pDC->SetBkMode(TRANSPARENT);
//To have lines limited in the drawing rectangle :
pDC->IntersectClipRect(m_PlottingRect);
for (m_uLastDrawnPoint=uFirst;m_uLastDrawnPoint<=uLast;m_uLastDrawnPoint++)
{
SChartXYPoint Point = GetPoint(m_uLastDrawnPoint);
CPoint ScreenPoint;
ValueToScreen(Point.X, Point.Y, ScreenPoint);
CRect PointRect;
PointRect.SetRect(ScreenPoint.x-m_iXPointSize/2,ScreenPoint.y-m_iYPointSize/2,ScreenPoint.x+m_iXPointSize/2,ScreenPoint.y+m_iYPointSize/2);
CRect ShadowRect = PointRect + CSize(m_iShadowDepth,m_iShadowDepth);
switch(m_iPointType)
{
case ptEllipse:
if (m_bShadow)
{
pOldPen = pDC->SelectObject(&ShadowPen);
pDC->SelectObject(&ShadowBrush);
pDC->Ellipse(ShadowRect);
pDC->SelectObject(&NewBrush);
pDC->SelectObject(&BorderPen);
}
pDC->Ellipse(PointRect);
break;
case ptRectangle:
if (m_bShadow)
{
pOldPen = pDC->SelectObject(&ShadowPen);
pDC->SelectObject(&ShadowBrush);
pDC->Rectangle(ShadowRect);
pDC->SelectObject(&NewBrush);
pDC->SelectObject(&BorderPen);
}
pDC->Rectangle(PointRect);
break;
case ptTriangle:
{
CPoint TrPoints[3];
TrPoints[0].x = PointRect.left;
TrPoints[0].y = PointRect.bottom;
TrPoints[1].x = PointRect.right;
TrPoints[1].y = PointRect.bottom;
TrPoints[2].x = PointRect.left + (int)fabs((PointRect.left-PointRect.right)/2.0);
TrPoints[2].y = PointRect.top;
if (m_bShadow)
{
CPoint ShadowPoints[3];
for (int i=0;i<3;i++)
{
ShadowPoints[i] = TrPoints[i] + CSize(m_iShadowDepth,m_iShadowDepth);
}
pOldPen = pDC->SelectObject(&ShadowPen);
pDC->SelectObject(&ShadowBrush);
pDC->Polygon(ShadowPoints,3);
pDC->SelectObject(&NewBrush);
pDC->SelectObject(&BorderPen);
}
pDC->Polygon(TrPoints,3);
}
break;
}
}
pDC->SelectClipRgn(NULL);
pDC->SelectObject(pOldPen);
pDC->SelectObject(pOldBrush);
DeleteObject(BorderPen);
DeleteObject(NewBrush);
DeleteObject(ShadowBrush);
DeleteObject(ShadowPen);
}
void CChartPointsSerie::DrawLegend(CDC *pDC, const CRect& rectBitmap) const
{
if (m_strSerieName== _T(""))
return;
CRect PointRect(0,0,m_iXPointSize,m_iYPointSize);
if ( (rectBitmap.Height()>m_iYPointSize) && (rectBitmap.Width()>m_iXPointSize) )
{
int XOffset = rectBitmap.left + rectBitmap.Width()/2 - m_iXPointSize/2;
int YOffset = rectBitmap.top + rectBitmap.Height()/2 - m_iYPointSize/2;
PointRect.OffsetRect(XOffset,YOffset);
}
else
PointRect = rectBitmap;
CBrush NewBrush(m_SerieColor);
CBrush* pOldBrush = pDC->SelectObject(&NewBrush);
switch(m_iPointType)
{
case ptEllipse:
pDC->Ellipse(PointRect);
break;
case ptRectangle:
pDC->Rectangle(PointRect);
break;
case ptTriangle:
{
CPoint TrPoints[3];
TrPoints[0].x = PointRect.left;
TrPoints[0].y = PointRect.bottom;
TrPoints[1].x = PointRect.right;
TrPoints[1].y = PointRect.bottom;
TrPoints[2].x = PointRect.left + (int)fabs((PointRect.left-PointRect.right)/2.0);
TrPoints[2].y = PointRect.top;
pDC->Polygon(TrPoints,3);
}
break;
}
pDC->SelectObject(pOldBrush);
DeleteObject(NewBrush);
}
bool CChartPointsSerie::IsPointOnSerie(const CPoint& screenPoint, unsigned& uIndex) const
{
uIndex = INVALID_POINT;
if (!m_bIsVisible)
return false;
unsigned uFirst=0, uLast=0;
if (!GetVisiblePoints(uFirst, uLast))
return false;
bool bResult = false;
for (unsigned i=uFirst ; i < uLast ; i++)
{
SChartXYPoint Point = GetPoint(i);
CPoint ValuePoint;
ValueToScreen(Point.X, Point.Y, ValuePoint);
int xDist = abs(screenPoint.x - ValuePoint.x);
int yDist = abs(screenPoint.y - ValuePoint.y);
if (xDist<=5 && yDist<=5)
{
uIndex = i;
bResult = true;
break;
}
}
return bResult;
}
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