Add Qt3 development HEAD version

1 files changed, 147 insertions, 0 deletions

diff --git a/examples/aclock/aclock.cpp b/examples/aclock/aclock.cpp
new file mode 100644
index 0000000..ea51313
--- /dev/null
+++ b/examples/aclock/aclock.cpp
@@ -0,0 +1,147 @@
+/****************************************************************************
+**
+** Copyright (C) 1992-2008 Trolltech ASA.  All rights reserved.
+**
+** This file is part of an example program for Qt.  This example
+** program may be used, distributed and modified without limitation.
+**
+*****************************************************************************/
+
+#include "aclock.h"
+#include <qtimer.h>
+#include <qpainter.h>
+#include <qbitmap.h>
+
+//
+// Constructs an analog clock widget that uses an internal QTimer.
+//
+
+AnalogClock::AnalogClock( QWidget *parent, const char *name )
+    : QWidget( parent, name )
+{
+    time = QTime::currentTime();		// get current time
+    internalTimer = new QTimer( this );	// create internal timer
+    connect( internalTimer, SIGNAL(timeout()), SLOT(timeout()) );
+    internalTimer->start( 5000 );		// emit signal every 5 seconds
+}
+
+void AnalogClock::mousePressEvent( QMouseEvent *e )
+{
+    if(isTopLevel()) 
+	clickPos = e->pos() + QPoint(geometry().topLeft() - frameGeometry().topLeft());
+}
+
+void AnalogClock::mouseMoveEvent( QMouseEvent *e )
+{
+    if(isTopLevel())
+	move( e->globalPos() - clickPos );
+}
+
+//
+// The QTimer::timeout() signal is received by this slot.
+//
+
+//
+// When we set an explicit time we don't want the timeout() slot to be 
+// called anymore as this relies on currentTime()
+//
+void AnalogClock::setTime( const QTime & t )
+{
+    time = t;
+    disconnect( internalTimer, SIGNAL(timeout()), this, SLOT(timeout()) );
+    if (autoMask())
+	updateMask();
+    else
+	update();
+}
+
+
+void AnalogClock::timeout()
+{
+    QTime old_time = time;
+    time = QTime::currentTime();
+    if ( old_time.minute() != time.minute() 
+	|| old_time.hour() != time.hour() ) {	// minute or hour has changed
+	if (autoMask())
+	    updateMask();
+	else
+	    update();
+    }
+}
+
+
+void AnalogClock::paintEvent( QPaintEvent * )
+{
+    if ( autoMask() )
+	return;
+    QPainter paint( this );
+    paint.setBrush( colorGroup().foreground() );
+    drawClock( &paint );
+}
+
+// If the clock is transparent, we use updateMask()
+// instead of paintEvent()
+
+void AnalogClock::updateMask()	// paint clock mask
+{
+    QBitmap bm( size() );
+    bm.fill( color0 );			//transparent
+
+    QPainter paint;
+    paint.begin( &bm, this );
+    paint.setBrush( color1 );		// use non-transparent color
+    paint.setPen( color1 );
+
+    drawClock( &paint );
+
+    paint.end();
+    setMask( bm );
+}
+
+//
+// The clock is painted using a 1000x1000 square coordinate system, in
+// the a centered square, as big as possible.  The painter's pen and
+// brush colors are used.
+//
+void AnalogClock::drawClock( QPainter *paint )
+{
+    paint->save();
+    
+    paint->setWindow( -500,-500, 1000,1000 );
+
+    QRect v = paint->viewport();
+    int d = QMIN( v.width(), v.height() );
+    paint->setViewport( v.left() + (v.width()-d)/2,
+			v.top() + (v.height()-d)/2, d, d );
+    
+    QPointArray pts;
+
+    paint->save();
+    paint->rotate( 30*(time.hour()%12-3) + time.minute()/2 );
+    pts.setPoints( 4, -20,0,  0,-20, 300,0, 0,20 );
+    paint->drawConvexPolygon( pts );
+    paint->restore();
+
+    paint->save();
+    paint->rotate( (time.minute()-15)*6 );
+    pts.setPoints( 4, -10,0, 0,-10, 400,0, 0,10 );
+    paint->drawConvexPolygon( pts );
+    paint->restore();
+
+    for ( int i=0; i<12; i++ ) {
+	paint->drawLine( 440,0, 460,0 );
+	paint->rotate( 30 );
+    }
+
+    paint->restore();
+}
+
+
+void AnalogClock::setAutoMask(bool b)
+{
+    if (b) 
+	setBackgroundMode( PaletteForeground );
+    else 
+	setBackgroundMode( PaletteBackground );
+    QWidget::setAutoMask(b);
+}