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/* -*- mode: C++ ; c-file-style: "stroustrup" -*- *****************************
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* Copyright (C) 1997 Josef Wilgen
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* Copyright (C) 2002 Uwe Rathmann
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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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#include "qwt_global.h"
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#include "qwt_double_range.h"
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\brief The Counter Widget
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A Counter consists of a label displaying a number and
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one ore more (up to three) push buttons on each side
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of the label which can be used to increment or decrement
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A Counter has a range from a minimum value to a maximum value
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and a step size. The range can be specified using
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QwtDblRange::setRange().
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The counter's value is an integer multiple of the step size.
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The number of steps by which a button increments or decrements
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the value can be specified using QwtCounter::setIncSteps().
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The number of buttons can be changed with
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QwtCounter::setNumButtons().
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Holding the space bar down with focus on a button is the
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fastest method to step through the counter values.
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When the counter underflows/overflows, the focus is set
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to the smallest up/down button and counting is disabled.
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Counting is re-enabled on a button release event (mouse or
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#include "../include/qwt_counter.h>
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cnt = new QwtCounter(parent, name);
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cnt->setRange(0.0, 100.0, 1.0); // From 0.0 to 100, step 1.0
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cnt->setNumButtons(2); // Two buttons each side
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cnt->setIncSteps(QwtCounter::Button1, 1); // Button 1 increments 1 step
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cnt->setIncSteps(QwtCounter::Button2, 20); // Button 2 increments 20 steps
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connect(cnt, SIGNAL(valueChanged(double)), my_class, SLOT(newValue(double)));
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class QWT_EXPORT QwtCounter : public QWidget, public QwtDoubleRange
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Q_PROPERTY( int numButtons READ numButtons WRITE setNumButtons )
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Q_PROPERTY( double basicstep READ step WRITE setStep )
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Q_PROPERTY( double minValue READ minVal WRITE setMinValue )
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Q_PROPERTY( double maxValue READ maxVal WRITE setMaxValue )
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Q_PROPERTY( int stepButton1 READ stepButton1 WRITE setStepButton1 )
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Q_PROPERTY( int stepButton2 READ stepButton2 WRITE setStepButton2 )
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Q_PROPERTY( int stepButton3 READ stepButton3 WRITE setStepButton3 )
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Q_PROPERTY( double value READ value WRITE setValue )
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Q_PROPERTY( bool editable READ editable WRITE setEditable )
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explicit QwtCounter(QWidget *parent = NULL);
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#if QT_VERSION < 0x040000
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explicit QwtCounter(QWidget *parent, const char *name);
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virtual ~QwtCounter();
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bool editable() const;
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void setEditable(bool);
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void setNumButtons(int n);
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int numButtons() const;
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void setIncSteps(QwtCounter::Button btn, int nSteps);
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int incSteps(QwtCounter::Button btn) const;
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virtual void setValue(double);
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virtual QSize sizeHint() const;
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virtual void polish();
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// a set of dummies to help the designer
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void setStep(double s);
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double minVal() const;
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void setMinValue(double m);
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double maxVal() const;
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void setMaxValue(double m);
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void setStepButton1(int nSteps);
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int stepButton1() const;
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void setStepButton2(int nSteps);
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int stepButton2() const;
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void setStepButton3(int nSteps);
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int stepButton3() const;
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virtual double value() const;
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This signal is emitted when a button has been released
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\param value The new value
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void buttonReleased (double value);
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This signal is emitted when the counter's value has changed
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\param value The new value
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void valueChanged (double value);
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virtual bool event(QEvent *);
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virtual void wheelEvent(QWheelEvent *);
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virtual void keyPressEvent(QKeyEvent *);
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virtual void rangeChange();
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void updateButtons();
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void showNum(double);
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virtual void valueChange();
added
removed
qwt-5.0.1/src/qwt_counter.h
