1 files changed, 48 insertions, 0 deletions
diff --git a/PerlQt/tutorials/t9/CannonField.pm b/PerlQt/tutorials/t9/CannonField.pm
new file mode 100644
index 0000000..e12489a
--- /dev/null
+++ b/PerlQt/tutorials/t9/CannonField.pm
@@ -0,0 +1,48 @@
+package CannonField;
+use strict;
+use Qt;
+use Qt::isa qw(Qt::Widget);
+use Qt::signals
+	angleChanged => ['int'];
+use Qt::slots
+	setAngle => ['int'];
+use Qt::attributes qw(
+	ang
+);
+use POSIX qw(atan);
+
+sub angle () { ang }
+
+sub NEW {
+    shift->SUPER::NEW(@_);
+
+    ang = 45;
+    setPalette(Qt::Palette(Qt::Color(250, 250, 200)));
+}
+
+sub setAngle {
+    my $degrees = shift;
+    $degrees = 5 if $degrees < 5;
+    $degrees = 70 if $degrees > 70;
+    return if ang == $degrees;
+    ang = $degrees;
+    repaint();
+    emit angleChanged(ang);
+}
+
+sub paintEvent {
+    my $p = Qt::Painter(this);
+    $p->setBrush(&blue);
+    $p->setPen(&NoPen);
+
+    $p->translate(0, rect()->bottom);
+    $p->drawPie(Qt::Rect(-35, -35, 70, 70), 0, 90*16);
+    $p->rotate(- ang);
+    $p->drawRect(Qt::Rect(33, -4, 15, 8));
+}
+
+sub sizePolicy {
+    Qt::SizePolicy(&Qt::SizePolicy::Expanding, &Qt::SizePolicy::Expanding);
+}
+
+1;