Add Qt3 development HEAD version

1 files changed, 99 insertions, 0 deletions

diff --git a/examples/forever/forever.cpp b/examples/forever/forever.cpp
new file mode 100644
index 0000000..4ee6016
--- /dev/null
+++ b/examples/forever/forever.cpp
@@ -0,0 +1,99 @@
+/****************************************************************************
+**
+** 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 <qtimer.h>
+#include <qpainter.h>
+#include <qapplication.h>
+#include <stdlib.h>				// defines rand() function
+
+#include "forever.h"
+
+
+//
+// Forever - a widget that draws rectangles forever.
+//
+
+//
+// Constructs a Forever widget.
+//
+
+Forever::Forever( QWidget *parent, const char *name )
+    : QWidget( parent, name )
+{
+    for (int a=0; a<numColors; a++) {
+	colors[a] = QColor( rand()&255,
+			    rand()&255,
+			    rand()&255 );
+    }
+    rectangles = 0;
+    startTimer( 0 );				// run continuous timer
+    QTimer * counter = new QTimer( this );
+    connect( counter, SIGNAL(timeout()),
+	     this, SLOT(updateCaption()) );
+    counter->start( 1000 );
+}
+
+
+void Forever::updateCaption()
+{
+    QString s;
+    s.sprintf( "Qt Example - Forever - %d rectangles/second", rectangles );
+    rectangles = 0;
+    setCaption( s );
+}
+
+
+//
+// Handles paint events for the Forever widget.
+//
+
+void Forever::paintEvent( QPaintEvent * )
+{
+    QPainter paint( this );			// painter object
+    int w = width();
+    int h = height();
+    if(w <= 0 || h <= 0) 
+	return;
+    paint.setPen( NoPen );			// do not draw outline
+    paint.setBrush( colors[rand() % numColors]);// set random brush color
+    
+    QPoint p1( rand()%w, rand()%h );	// p1 = top left
+    QPoint p2( rand()%w, rand()%h );	// p2 = bottom right
+    
+    QRect r( p1, p2 );
+    paint.drawRect( r );			// draw filled rectangle
+}
+
+//
+// Handles timer events for the Forever widget.
+//
+
+void Forever::timerEvent( QTimerEvent * )
+{
+    for ( int i=0; i<100; i++ ) {
+	repaint( FALSE );			// repaint, don't erase
+	rectangles++;
+    }
+}
+
+
+//
+// Create and display Forever widget.
+//
+
+int main( int argc, char **argv )
+{
+    QApplication a( argc, argv );		// create application object
+    Forever always;				// create widget
+    always.resize( 400, 250 );			// start up with size 400x250
+    a.setMainWidget( &always );			// set as main widget
+    always.setCaption("Qt Example - Forever");
+    always.show();				// show widget
+    return a.exec();				// run event loop
+}