qt_demoe/qwtdemo/qwt/qwt_analog_clock.h

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2019-11-07 02:55:57 +00:00
/* -*- mode: C++ ; c-file-style: "stroustrup" -*- *****************************
* Qwt Widget Library
* Copyright (C) 1997 Josef Wilgen
* Copyright (C) 2002 Uwe Rathmann
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the Qwt License, Version 1.0
*****************************************************************************/
#ifndef QWT_ANALOG_CLOCK_H
#define QWT_ANALOG_CLOCK_H
#include "qwt_global.h"
#include "qwt_dial.h"
#include "qwt_dial_needle.h"
#include <qdatetime.h>
/*!
\brief An analog clock
\image html analogclock.png
\par Example
\code
#include <qwt_analog_clock.h>
QwtAnalogClock *clock = new QwtAnalogClock(...);
clock->scaleDraw()->setPenWidth(3);
clock->setLineWidth(6);
clock->setFrameShadow(QwtDial::Sunken);
clock->setTime();
// update the clock every second
QTimer *timer = new QTimer(clock);
timer->connect(timer, SIGNAL(timeout()), clock, SLOT(setCurrentTime()));
timer->start(1000);
\endcode
\note The examples/dials example shows how to use QwtAnalogClock.
*/
class QWT_EXPORT QwtAnalogClock: public QwtDial
{
Q_OBJECT
public:
/*!
Hand type
\sa setHand(), hand()
*/
enum Hand
{
//! Needle displaying the seconds
SecondHand,
//! Needle displaying the minutes
MinuteHand,
//! Needle displaying the hours
HourHand,
//! Number of needles
NHands
};
explicit QwtAnalogClock( QWidget* parent = NULL );
virtual ~QwtAnalogClock();
void setHand( Hand, QwtDialNeedle * );
const QwtDialNeedle *hand( Hand ) const;
QwtDialNeedle *hand( Hand );
public Q_SLOTS:
void setCurrentTime();
void setTime( const QTime & );
protected:
virtual void drawNeedle( QPainter *, const QPointF &,
double radius, double direction, QPalette::ColorGroup ) const;
virtual void drawHand( QPainter *, Hand, const QPointF &,
double radius, double direction, QPalette::ColorGroup ) const;
private:
// use setHand instead
void setNeedle( QwtDialNeedle * );
QwtDialNeedle *d_hand[NHands];
};
#endif