115 lines
3.3 KiB
C
115 lines
3.3 KiB
C
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/*
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*
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* ChartLineSerie.h
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*
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* Written by C<EFBFBD>dric Moonen (cedric_moonen@hotmail.com)
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*
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*
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*
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* This code may be used for any non-commercial and commercial purposes in a compiled form.
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* The code may be redistributed as long as it remains unmodified and providing that the
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* author name and this disclaimer remain intact. The sources can be modified WITH the author
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* consent only.
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*
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* This code is provided without any garanties. I cannot be held responsible for the damage or
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* the loss of time it causes. Use it at your own risks
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*
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* An e-mail to notify me that you are using this code is appreciated also.
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*
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*
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*/
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#if !defined(AFX_CHARTLINESERIE_H__792C2F20_9650_42FA_B13D_E63911C98CE5__INCLUDED_)
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#define AFX_CHARTLINESERIE_H__792C2F20_9650_42FA_B13D_E63911C98CE5__INCLUDED_
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#if _MSC_VER > 1000
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#pragma once
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#endif // _MSC_VER > 1000
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#include "ChartXYSerie.h"
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//! Specialization of a CChartSerie to display a line series.
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/**
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The data points are connected by line segments. The curve can also
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be smoothed.
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**/
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class CChartLineSerie : public CChartXYSerie
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{
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public:
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//! Returns the pen style (plain, dashed, dotted, ...)
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/**
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For a list of pen styles available, see the CreatePen function in MSDN.
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**/
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int GetPenStyle() const { return m_iPenStyle; }
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//! Sets the pen style (plain, dashed, dotted, ...)
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/**
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For a list of pen styles available, see the CreatePen function in MSDN.
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**/
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void SetPenStyle(int NewStyle);
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//! Returns the pen width
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int GetWidth() const { return m_iLineWidth; }
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//! Sets the pen width
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void SetWidth(int PenWidth);
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//! Enables the smoothing of the curve (slower).
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void SetSmooth(bool bSmooth);
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//! Constructor
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CChartLineSerie(CChartCtrl* pParent);
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//! Destructor
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virtual ~CChartLineSerie();
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//! Check whether a screen point is on the series.
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/**
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This function returns true if the screen point is close to a line segment.
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If the screen point is also close to a specific point of the series, the
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index of the point is stored in the uIndex parameter. Otherwise, this
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parameter contains INVALID_POINT.
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@param screenPoint
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The screen point to test
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@param uIndex
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If the point is close to a specific point of the series, its index is stored here.
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@return true if the point is on the series
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**/
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bool IsPointOnSerie(const CPoint& screenPoint, unsigned& uIndex) const;
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private:
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//! Draws the legend icon for the series.
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/**
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@param pDC
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The device context used to draw
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@param rectBitmap
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The rectangle in which to draw the legend icon
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**/
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void DrawLegend(CDC* pDC, const CRect& rectBitmap) const;
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//! Draws the most recent points of the series.
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/**
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This function should only draw the points that were not previously
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drawn.
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@param pDC
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The device context used to draw
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**/
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void Draw(CDC* pDC);
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//! Redraws the full series.
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/**
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@param pDC
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The device context used to draw
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**/
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void DrawAll(CDC *pDC);
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//! Checks whether a point is close to a line segment
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bool IsNearLine(long Axl, long Ayl,long Bxl,
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long Byl, long Cxl, long Cyl) const;
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//! The pen width
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int m_iLineWidth;
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//! The pen style
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int m_iPenStyle;
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//! Specifies if the curve is smoothed
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bool m_bSmooth;
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};
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#endif // !defined(AFX_CHARTLINESERIE_H__792C2F20_9650_42FA_B13D_E63911C98CE5__INCLUDED_)
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