Initial import of libqt-perl (not yet TQt compatible)

1 files changed, 146 insertions, 0 deletions

diff --git a/PerlQt/tutorials/t11/CannonField.pm b/PerlQt/tutorials/t11/CannonField.pm
new file mode 100644
index 0000000..7ddfb24
--- /dev/null
+++ b/PerlQt/tutorials/t11/CannonField.pm
@@ -0,0 +1,146 @@
+package CannonField;
+use strict;
+use Qt;
+use Qt::isa qw(Qt::Widget);
+use Qt::signals
+	angleChanged => ['int'],
+	forceChanged => ['int'];
+use Qt::slots
+	setAngle => ['int'],
+	setForce => ['int'],
+	shoot => [],
+	moveShot => [];
+use Qt::attributes qw(
+	ang
+	f
+
+	timerCount
+	autoShootTimer
+	shoot_ang
+	shoot_f
+);
+use POSIX qw(atan);
+
+sub angle () { ang }
+sub force () { f }
+
+sub NEW {
+    shift->SUPER::NEW(@_);
+
+    ang = 45;
+    f = 0;
+    timerCount = 0;
+    autoShootTimer = Qt::Timer(this, "movement handler");
+    this->connect(autoShootTimer, SIGNAL('timeout()'), SLOT('moveShot()'));
+    shoot_ang = 0;
+    shoot_f = 0;
+    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(cannonRect(), 0);
+    emit angleChanged(ang);
+}
+
+sub setForce {
+    my $newton = shift;
+    $newton = 0 if $newton < 0;
+    return if f == $newton;
+    f = $newton;
+    emit forceChanged(f);
+}
+
+sub shoot {
+    return if autoShootTimer->isActive;
+    timerCount = 0;
+    shoot_ang = ang;
+    shoot_f = f;
+    autoShootTimer->start(50);
+}
+
+sub moveShot {
+    my $r = Qt::Region(shotRect());
+    timerCount++;
+
+    my $shotR = shotRect();
+
+    if($shotR->x > width() || $shotR->y > height()) {
+	autoShootTimer->stop;
+    } else {
+	$r = $r->unite(Qt::Region($shotR));
+    }
+    repaint($r);
+}
+
+sub paintEvent {
+    my $e = shift;
+    my $updateR = $e->rect;
+    my $p = Qt::Painter(this);
+
+    paintCannon($p)  if $updateR->intersects(cannonRect());
+    paintShot($p)    if autoShootTimer->isActive and $updateR->intersects(shotRect());
+}
+
+sub paintShot {
+    my $p = shift;
+    $p->setBrush(&black);
+    $p->setPen(&NoPen);
+    $p->drawRect(shotRect());
+}
+
+my $barrelRect = Qt::Rect(33, -4, 15, 8);
+
+sub paintCannon {
+    my $p = shift;
+    my $cr = cannonRect();
+    my $pix = Qt::Pixmap($cr->size);
+    $pix->fill(this, $cr->topLeft);
+
+    my $tmp = Qt::Painter($pix);
+    $tmp->setBrush(&blue);
+    $tmp->setPen(&NoPen);
+
+    $tmp->translate(0, $pix->height - 1);
+    $tmp->drawPie(Qt::Rect(-35, -35, 70, 70), 0, 90*16);
+    $tmp->rotate(- ang);
+    $tmp->drawRect($barrelRect);
+    $tmp->end;
+
+    $p->drawPixmap($cr->topLeft, $pix);
+}
+
+sub cannonRect {
+    my $r = Qt::Rect(0, 0, 50, 50);
+    $r->moveBottomLeft(rect()->bottomLeft);
+    return $r;
+}
+
+sub shotRect {
+    my $gravity = 4;
+
+    my $time     = timerCount / 4.0;
+    my $velocity = shoot_f;
+    my $radians  = shoot_ang*3.14159265/180;
+
+    my $velx     = $velocity*cos($radians);
+    my $vely     = $velocity*sin($radians);
+    my $x0       = ($barrelRect->right + 5)*cos($radians);
+    my $y0       = ($barrelRect->right + 5)*sin($radians);
+    my $x        = $x0 + $velx*$time;
+    my $y        = $y0 + $vely*$time - 0.5*$gravity*$time**2;
+
+    my $r = Qt::Rect(0, 0, 6, 6);
+    $r->moveCenter(Qt::Point(int($x), height() - 1 - int($y)));
+    return $r;
+}
+
+sub sizePolicy {
+    Qt::SizePolicy(&Qt::SizePolicy::Expanding, &Qt::SizePolicy::Expanding);
+}
+
+1;