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114 lines
2.9 KiB
114 lines
2.9 KiB
/* -*- mode: C++ ; c-file-style: "stroustrup" -*- ***************************** |
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* Qwt Widget Library |
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* Copyright (C) 1997 Josef Wilgen |
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* Copyright (C) 2002 Uwe Rathmann |
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* |
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* This library is free software; you can redistribute it and/or |
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* modify it under the terms of the Qwt License, Version 1.0 |
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*****************************************************************************/ |
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// vim: expandtab |
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#ifndef QWT_PLOT_PICKER_H |
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#define QWT_PLOT_PICKER_H |
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#include "qwt_double_rect.h" |
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#include "qwt_plot_canvas.h" |
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#include "qwt_picker.h" |
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class QwtPlot; |
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/*! |
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\brief QwtPlotPicker provides selections on a plot canvas |
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QwtPlotPicker is a QwtPicker tailored for selections on |
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a plot canvas. It is set to a x-Axis and y-Axis and |
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translates all pixel coordinates into this coodinate system. |
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*/ |
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class QWT_EXPORT QwtPlotPicker: public QwtPicker |
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{ |
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Q_OBJECT |
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public: |
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explicit QwtPlotPicker(QwtPlotCanvas *); |
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explicit QwtPlotPicker(int xAxis, int yAxis, |
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QwtPlotCanvas *); |
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explicit QwtPlotPicker(int xAxis, int yAxis, int selectionFlags, |
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RubberBand rubberBand, DisplayMode trackerMode, |
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QwtPlotCanvas *); |
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virtual void setAxis(int xAxis, int yAxis); |
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int xAxis() const; |
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int yAxis() const; |
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QwtPlot *plot(); |
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const QwtPlot *plot() const; |
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QwtPlotCanvas *canvas(); |
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const QwtPlotCanvas *canvas() const; |
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signals: |
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/*! |
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A signal emitted in case of selectionFlags() & PointSelection. |
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\param pos Selected point |
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*/ |
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void selected(const QwtDoublePoint &pos); |
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/*! |
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A signal emitted in case of selectionFlags() & RectSelection. |
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\param rect Selected rectangle |
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*/ |
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void selected(const QwtDoubleRect &rect); |
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/*! |
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A signal emitting the selected points, |
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at the end of a selection. |
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\param pa Selected points |
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*/ |
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void selected(const QwtArray<QwtDoublePoint> &pa); |
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/*! |
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A signal emitted when a point has been appended to the selection |
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\param pos Position of the appended point. |
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\sa append(). moved() |
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*/ |
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void appended(const QwtDoublePoint &pos); |
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/*! |
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A signal emitted whenever the last appended point of the |
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selection has been moved. |
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\param pos Position of the moved last point of the selection. |
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\sa move(), appended() |
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*/ |
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void moved(const QwtDoublePoint &pos); |
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protected: |
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QwtDoubleRect scaleRect() const; |
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QwtDoubleRect invTransform(const QRect &) const; |
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QRect transform(const QwtDoubleRect &) const; |
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QwtDoublePoint invTransform(const QPoint &) const; |
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QPoint transform(const QwtDoublePoint &) const; |
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virtual QwtText trackerText(const QPoint &) const; |
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virtual QwtText trackerText(const QwtDoublePoint &) const; |
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virtual void move(const QPoint &); |
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virtual void append(const QPoint &); |
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virtual bool end(bool ok = true); |
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private: |
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int d_xAxis; |
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int d_yAxis; |
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}; |
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#endif
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