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checkkeys.pl
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checkkeys.pl
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#!/usr/bin/env perl
use SDL;
use SDLx::App;
use SDL::Event;
my %options;
die <<USAGE if ( in $ARGV[0], qw/ -? -h --help / );
usage: $0 [-hw] [-fullscreen] [-width 640] [-height 480] [-bpp 24]
USAGE
for ( 0 .. @ARGV - 1 ) {
$options{ $ARGV[$_] } = $ARGV[ $_ + 1 ] || 1;
}
$options{-flags} = SDL_SWSURFACE;
$options{-flags} |= SDL_HWPALETTE if ( $options{-hw} );
$options{-flags} |= SDL_FULLSCREEN if ( $options{-fullscreen} );
$options{-title} = $0;
$options{-width} ||= 640;
$options{-height} ||= 480;
$options{-depth} ||= $options{-bpp} || 24;
my $app = SDLx::App->new(%options);
# SDL::EventState(SDL_KEYUP,SDL_DISABLE);
sub print_modifiers {
$mod = SDL::GetModState();
print " modifiers:",
( $mod & KMOD_LSHIFT ) ? " LSHIFT" : "",
( $mod & KMOD_RSHIFT ) ? " RSHIFT" : "",
( $mod & KMOD_LCTRL ) ? " LCTRL" : "",
( $mod & KMOD_RCTRL ) ? " RCTRL" : "",
( $mod & KMOD_LALT ) ? " LALT" : "",
( $mod & KMOD_RALT ) ? " RALT" : "",
( $mod & KMOD_LMETA ) ? " LMETA" : "",
( $mod & KMOD_RMETA ) ? " RMETA" : "",
( $mod & KMOD_CAPS ) ? " CAPS" : "",
( $mod & KMOD_NUM ) ? " NUM" : "",
( $mod & KMOD_MODE ) ? " MODE" : "",
"\n";
}
sub print_key {
my ($e) = @_;
print "pressed " if ( SDL::KeyEventState($e) == SDL_PRESSED );
print "released " if ( SDL::KeyEventState($e) == SDL_RELEASED );
my $sym = SDL::KeyEventSym($e);
if ($sym) {
print SDL::GetKeyName($sym);
} else {
printf "Unknown Key (scancode = %d) ", SDL::KeyEventScanCode($e);
}
}
my $event = SDL::Event->new;
my $done = 0;
$process_keys = sub {
print_key( $_[0] );
print_modifiers();
};
my %events = (
SDL_KEYUP() => $process_keys,
SDL_KEYDOWN() => $process_keys,
SDL_QUIT() => sub { $done = 1; },
);
while ( !$done && $event->wait() ) {
if ( $events{ $event->type() } ) {
&{ $events{ $event->type() } }($$event);
}
}