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#!/usr/bin/perl
use strict;
use warnings;
use QtCore4;
use QtGui4;
use Mouse;
my $MouseCount = 7;
# [0]
sub main
{
my $app = Qt::Application( \@ARGV );
srand(Qt::Time(0,0,0)->secsTo(Qt::Time::currentTime()));
# [0]
# [1]
my $scene = Qt::GraphicsScene();
$scene->setSceneRect(-300, -300, 600, 600);
# [1] //! [2]
$scene->setItemIndexMethod(Qt::GraphicsScene::NoIndex());
# [2]
# [3]
for (my $i = 0; $i < $MouseCount; ++$i) {
my $mouse = Mouse();
$mouse->setPos(sin(($i * 6.28) / $MouseCount) * 200,
cos(($i * 6.28) / $MouseCount) * 200);
$scene->addItem($mouse);
}
# [3]
# [4]
my $view = Qt::GraphicsView($scene);
$view->setRenderHint(Qt::Painter::Antialiasing());
$view->setBackgroundBrush(Qt::Brush(Qt::Pixmap('images/cheese.jpg')));
# [4] //! [5]
$view->setCacheMode(Qt::GraphicsView::CacheBackground());
$view->setViewportUpdateMode(Qt::GraphicsView::BoundingRectViewportUpdate());
$view->setDragMode(Qt::GraphicsView::ScrollHandDrag());
# [5] //! [6]
$view->setWindowTitle(Qt::GraphicsView::tr('Colliding Mice'));
$view->resize(400, 300);
$view->show();
my $timer = Qt::Timer();
Qt::Object::connect( $timer, SIGNAL 'timeout()', $scene, SLOT 'advance()' );
$timer->start(1000 / 33);
return $app->exec();
}
# [6]
exit main();
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