162 lines
4.2 KiB
C++
162 lines
4.2 KiB
C++
/* -*- 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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#ifndef QWT_COUNTER_H
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#define QWT_COUNTER_H
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#include "qwt_global.h"
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#include <qwidget.h>
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/*!
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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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the counter's value.
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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. When the wrapping property is set
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the counter is circular.
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The number of steps by which a button increments or decrements the value
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can be specified using setIncSteps(). The number of buttons can be
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changed with setNumButtons().
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Example:
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\code
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#include <qwt_counter.h>
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QwtCounter *counter = new QwtCounter(parent);
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counter->setRange(0.0, 100.0); // From 0.0 to 100
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counter->setSingleStep( 1.0 ); // Step size 1.0
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counter->setNumButtons(2); // Two buttons each side
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counter->setIncSteps(QwtCounter::Button1, 1); // Button 1 increments 1 step
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counter->setIncSteps(QwtCounter::Button2, 20); // Button 2 increments 20 steps
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connect(counter, SIGNAL(valueChanged(double)), myClass, SLOT(newValue(double)));
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\endcode
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*/
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class QWT_EXPORT QwtCounter : public QWidget
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{
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Q_OBJECT
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Q_PROPERTY( double value READ value WRITE setValue )
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Q_PROPERTY( double minimum READ minimum WRITE setMinimum )
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Q_PROPERTY( double maximum READ maximum WRITE setMaximum )
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Q_PROPERTY( double singleStep READ singleStep WRITE setSingleStep )
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Q_PROPERTY( int numButtons READ numButtons WRITE setNumButtons )
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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( bool readOnly READ isReadOnly WRITE setReadOnly )
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Q_PROPERTY( bool wrapping READ wrapping WRITE setWrapping )
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public:
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//! Button index
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enum Button
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{
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//! Button intended for minor steps
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Button1,
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//! Button intended for medium steps
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Button2,
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//! Button intended for large steps
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Button3,
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//! Number of buttons
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ButtonCnt
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};
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explicit QwtCounter( QWidget *parent = NULL );
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virtual ~QwtCounter();
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void setValid( bool );
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bool isValid() const;
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void setWrapping( bool );
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bool wrapping() const;
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bool isReadOnly() const;
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void setReadOnly( 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 QSize sizeHint() const;
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double singleStep() const;
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void setSingleStep( double s );
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void setRange( double min, double max );
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double minimum() const;
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void setMinimum( double min );
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double maximum() const;
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void setMaximum( double max );
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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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double value() const;
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public Q_SLOTS:
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void setValue( double );
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Q_SIGNALS:
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/*!
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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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*/
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void buttonReleased ( double value );
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/*!
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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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*/
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void valueChanged ( double value );
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protected:
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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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private Q_SLOTS:
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void btnReleased();
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void btnClicked();
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void textChanged();
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private:
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void incrementValue( int numSteps );
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void initCounter();
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void updateButtons();
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void showNumber( double );
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class PrivateData;
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PrivateData *d_data;
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};
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#endif
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