72 lines
2.1 KiB
C++
72 lines
2.1 KiB
C++
/*
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*
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* ChartDragLineCursor.h
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*
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* Written by Cédric 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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#ifndef _CHARTDRAGLINECURSOR_H_
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#define _CHARTDRAGLINECURSOR_H_
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#include "ChartCursor.h"
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class CChartAxis;
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//! Specialization of a CChartCursor class for a dragline cursor.
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/**
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A dragline cursor is a simple vertical or horizontal line associated
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with a specific axis. The line can be moved if the user clicks on the
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line (and keeps the button pressed) and moves the mouse. Once the mouse
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button is released, the line doesn't move anymore.<br>
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To create a dragline cursor, call the CreateDragLineCursor from the
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CChartCtrl class.
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**/
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class CChartDragLineCursor : public CChartCursor
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{
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friend CChartCtrl;
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public:
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//! Sets the position (by value) of the cursor.
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void SetPosition(double dPosition);
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protected:
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//! Called when the mouse is moved over the plot area.
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void OnMouseMove(CPoint mousePoint);
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//! Called when the mouse button is pressed over the plot area.
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void OnMouseButtonDown(CPoint mousePoint);
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//! Called when the mouse button is released over the plot area.
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void OnMouseButtonUp(CPoint mousePoint);
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//! Draw the cursor.
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void Draw(CDC* pDC);
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private:
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//! Constructor
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CChartDragLineCursor(CChartCtrl* pParent, CChartAxis* pRelatedAxis);
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//! Destructor
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~CChartDragLineCursor();
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//! The axis to which this cursor is attached.
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CChartAxis* m_pRelatedAxis;
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//! flag specifying if the cursor is currently being dragged.
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bool m_bDragged;
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//! The current screen position of the cursor.
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long m_lPosition;
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};
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#endif // _CHARTDRAGLINECURSOR_H_
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