彻底改版2.0

third/3rd_qwt/qwt_analog_clock.cpp

@@ -0,0 +1,244 @@
+/* -*- 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
+ *****************************************************************************/
+
+#include "qwt_analog_clock.h"
+#include "qwt_round_scale_draw.h"
+#include <qmath.h>
+#include <qlocale.h>
+
+class QwtAnalogClockScaleDraw: public QwtRoundScaleDraw
+{
+public:
+    QwtAnalogClockScaleDraw()
+    {
+        setSpacing( 8 );
+
+        enableComponent( QwtAbstractScaleDraw::Backbone, false );
+
+        setTickLength( QwtScaleDiv::MinorTick, 2 );
+        setTickLength( QwtScaleDiv::MediumTick, 4 );
+        setTickLength( QwtScaleDiv::MajorTick, 8 );
+
+        setPenWidth( 1 );
+    }
+
+    virtual QwtText label( double value ) const
+    {
+        if ( qFuzzyCompare( value + 1.0, 1.0 ) )
+            value = 60.0 * 60.0 * 12.0;
+
+        return QLocale().toString( qRound( value / ( 60.0 * 60.0 ) ) );
+    }
+};
+
+/*!
+  Constructor
+  \param parent Parent widget
+*/
+QwtAnalogClock::QwtAnalogClock( QWidget *parent ):
+    QwtDial( parent )
+{
+    setWrapping( true );
+    setReadOnly( true );
+
+    setOrigin( 270.0 );
+    setScaleDraw( new QwtAnalogClockScaleDraw() );
+
+    setTotalSteps( 60 );
+
+    const int secondsPerHour = 60.0 * 60.0;
+
+    QList<double> majorTicks;
+    QList<double> minorTicks;
+
+    for ( int i = 0; i < 12; i++ )
+    {
+        majorTicks += i * secondsPerHour;
+
+        for ( int j = 1; j < 5; j++ )
+            minorTicks += i * secondsPerHour + j * secondsPerHour / 5.0;
+    }
+
+    QwtScaleDiv scaleDiv;
+    scaleDiv.setInterval( 0.0, 12.0 * secondsPerHour );
+    scaleDiv.setTicks( QwtScaleDiv::MajorTick, majorTicks );
+    scaleDiv.setTicks( QwtScaleDiv::MinorTick, minorTicks );
+    setScale( scaleDiv );
+
+    QColor knobColor = palette().color( QPalette::Active, QPalette::Text );
+    knobColor = knobColor.dark( 120 );
+
+    QColor handColor;
+    int width;
+
+    for ( int i = 0; i < NHands; i++ )
+    {
+        if ( i == SecondHand )
+        {
+            width = 2;
+            handColor = knobColor.dark( 120 );
+        }
+        else
+        {
+            width = 8;
+            handColor = knobColor;
+        }
+
+        QwtDialSimpleNeedle *hand = new QwtDialSimpleNeedle(
+            QwtDialSimpleNeedle::Arrow, true, handColor, knobColor );
+        hand->setWidth( width );
+
+        d_hand[i] = NULL;
+        setHand( static_cast<Hand>( i ), hand );
+    }
+}
+
+//! Destructor
+QwtAnalogClock::~QwtAnalogClock()
+{
+    for ( int i = 0; i < NHands; i++ )
+        delete d_hand[i];
+}
+
+/*!
+  Nop method, use setHand() instead
+  \sa setHand()
+*/
+void QwtAnalogClock::setNeedle( QwtDialNeedle * )
+{
+    // no op
+    return;
+}
+
+/*!
+   Set a clock hand
+   \param hand Specifies the type of hand
+   \param needle Hand
+   \sa hand()
+*/
+void QwtAnalogClock::setHand( Hand hand, QwtDialNeedle *needle )
+{
+    if ( hand >= 0 && hand < NHands )
+    {
+        delete d_hand[hand];
+        d_hand[hand] = needle;
+    }
+}
+
+/*!
+  \return Clock hand
+  \param hd Specifies the type of hand
+  \sa setHand()
+*/
+QwtDialNeedle *QwtAnalogClock::hand( Hand hd )
+{
+    if ( hd < 0 || hd >= NHands )
+        return NULL;
+
+    return d_hand[hd];
+}
+
+/*!
+  \return Clock hand
+  \param hd Specifies the type of hand
+  \sa setHand()
+*/
+const QwtDialNeedle *QwtAnalogClock::hand( Hand hd ) const
+{
+    return const_cast<QwtAnalogClock *>( this )->hand( hd );
+}
+
+/*!
+  \brief Set the current time
+*/
+void QwtAnalogClock::setCurrentTime()
+{
+    setTime( QTime::currentTime() );
+}
+
+/*!
+  Set a time
+  \param time Time to display
+*/
+void QwtAnalogClock::setTime( const QTime &time )
+{
+    if ( time.isValid() )
+    {
+        setValue( ( time.hour() % 12 ) * 60.0 * 60.0
+            + time.minute() * 60.0 + time.second() );
+    }
+    else
+        setValid( false );
+}
+
+/*!
+  \brief Draw the needle
+
+  A clock has no single needle but three hands instead. drawNeedle()
+  translates value() into directions for the hands and calls
+  drawHand().
+
+  \param painter Painter
+  \param center Center of the clock
+  \param radius Maximum length for the hands
+  \param dir Dummy, not used.
+  \param colorGroup ColorGroup
+
+  \sa drawHand()
+*/
+void QwtAnalogClock::drawNeedle( QPainter *painter, const QPointF &center,
+    double radius, double dir, QPalette::ColorGroup colorGroup ) const
+{
+    Q_UNUSED( dir );
+
+    if ( isValid() )
+    {
+        const double hours = value() / ( 60.0 * 60.0 );
+        const double minutes =
+            ( value() - qFloor(hours) * 60.0 * 60.0 ) / 60.0;
+        const double seconds = value() - qFloor(hours) * 60.0 * 60.0
+            - qFloor(minutes) * 60.0;
+
+        double angle[NHands];
+        angle[HourHand] = 360.0 * hours / 12.0;
+        angle[MinuteHand] = 360.0 * minutes / 60.0;
+        angle[SecondHand] = 360.0 * seconds / 60.0;
+
+        for ( int hand = 0; hand < NHands; hand++ )
+        {
+            const double d = 360.0 - angle[hand] - origin();
+            drawHand( painter, static_cast<Hand>( hand ),
+                center, radius, d, colorGroup );
+        }
+    }
+}
+
+/*!
+  Draw a clock hand
+
+  \param painter Painter
+  \param hd Specify the type of hand
+  \param center Center of the clock
+  \param radius Maximum length for the hands
+  \param direction Direction of the hand in degrees, counter clockwise
+  \param cg ColorGroup
+*/
+void QwtAnalogClock::drawHand( QPainter *painter, Hand hd,
+    const QPointF &center, double radius, double direction,
+    QPalette::ColorGroup cg ) const
+{
+    const QwtDialNeedle *needle = hand( hd );
+    if ( needle )
+    {
+        if ( hd == HourHand )
+            radius = qRound( 0.8 * radius );
+
+        needle->draw( painter, center, radius, direction, cg );
+    }
+}