SDL::App - a SDL perl extension
Extension
use SDL; use SDL::Event; use SDL::App; my $app = new SDL::App ( -title => 'Application Title', -width => 640, -height => 480, -depth => 32 );
This is the manual way of doing things
my $event = new SDL::Event; # create a new event $event->pump(); $event->poll(); while ($event->wait()) { my $type = $event->type(); # get event type print $type; exit if $type == SDL_QUIT; } An alternative to the manual Event processing is the L<SDL::App::loop> .
SDL::App controls the root window of the of your SDL based application. It extends the SDL::Surface class, and provides an interface to the window manager oriented functions.
SDL::App::new
initializes the SDL, creates a new screen,
and initializes some of the window manager properties.
SDL::App::new
takes a series of named parameters:
SDL::App::title
takes 0, 1, or 2 arguments. It returns the current
application window title. If one parameter is passed, both the window
title and icon title will be set to its value. If two parameters are
passed the window title will be set to the first, and the icon title
to the second.
SDL::App::delay
takes 1 argument, and will sleep the application for
that many ms.
SDL::App::ticks
returns the number of ms since the application began.
SDL::App::error
returns the last error message set by the SDL.
SDL::App::resize
takes a new height and width of the application
if the application was originally created with the -resizable option.
SDL::App::fullscreen
toggles the application in and out of fullscreen mode.
SDL::App::iconify
iconifies the applicaiton window.
SDL::App::grab_input
can be used to change the input focus behavior of
the application. It takes one argument, which should be one of the following:
SDL::App::loop
is a simple event loop method which takes a reference to a hash
of event handler subroutines. The keys of the hash must be SDL event types such
as SDL_QUIT(), SDL_KEYDOWN(), and the like. The event method recieves as its parameter
the event object used in the loop.
Example: my $app = new SDL::App -title => "test.app", -width => 800, -height => 600, -depth => 32; my %actions = ( SDL_QUIT() => sub { exit(0); }, SDL_KEYDOWN() => sub { print "Key Pressed" }, ); $app->loop(\%actions);
SDL::App::sync
encapsulates the various methods of syncronizing the screen with the
current video buffer. SDL::App::sync
will do a fullscreen update, using the double buffer
or OpenGL buffer if applicable. This is prefered to calling flip on the application window.
SDL::App::attribute
allows one to set and get GL attributes. By passing a value
in addition to the attribute selector, the value will be set. SDL:::App::attribute
always returns the current value of the given attribute, or croaks on failure.
David J. Goehrig Kartik Thakore
perl SDL::Surface SDL::Event SDL::OpenGL