彻底改版2.0

third/3rd_qwt/qwt_analog_clock.h

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+/* -*- 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