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44 lines
762 B
44 lines
762 B
package CannonField;
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use strict;
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use TQt;
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use TQt::isa qw(TQt::Widget);
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use TQt::signals
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angleChanged => ['int'];
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use TQt::slots
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setAngle => ['int'];
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use TQt::attributes qw(
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ang
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);
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use POSIX qw(atan);
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sub angle () { ang }
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sub NEW {
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shift->SUPER::NEW(@_);
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ang = 45;
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setPalette(TQt::Palette(TQt::Color(250, 250, 200)));
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}
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sub setAngle {
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my $degrees = shift;
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$degrees = 5 if $degrees < 5;
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$degrees = 70 if $degrees > 70;
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return if ang == $degrees;
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ang = $degrees;
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repaint();
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emit angleChanged(ang);
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}
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sub paintEvent {
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my $s = "Angle = " . ang;
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my $p = TQt::Painter(this);
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$p->drawText(200, 200, $s);
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}
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sub sizePolicy {
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TQt::SizePolicy(&TQt::SizePolicy::Expanding, &TQt::SizePolicy::Expanding);
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}
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1;
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