3 # The application object, sort of like a surface
5 # Copyright (C) 2000,2002,2003,2004 David J. Goehrig
6 # Copyright (C) 2009 Kartik Thakore
18 our @ISA = qw(SDL::Surface);
22 my $class = ref($proto) || $proto;
25 verify (%options, qw/ -opengl -gl -fullscreen -full -resizeable
26 -title -t -icon_title -it -icon -i
27 -width -w -height -h -depth -d -flags -f
28 -red_size -r -blue_size -b -green_size -g -alpha_size -a
29 -red_accum_size -ras -blue_accum_size -bas
30 -green_accum_sizee -gas -alpha_accum_size -aas
31 -double_buffer -db -buffer_size -bs -stencil_size -st
35 # SDL_INIT_VIDEO() is 0, so check defined instead of truth.
36 my $init = defined $options{-init} ? $options{-init} : SDL_INIT_EVERYTHING();
40 my $t = $options{-title} || $options{-t} || $0;
41 my $it = $options{-icon_title} || $options{-it} || $t;
42 my $ic = $options{-icon} || $options{-i} || "";
43 my $w = $options{-width} || $options{-w} || 800;
44 my $h = $options{-height} || $options{-h} || 600;
45 my $d = $options{-depth} || $options{-d} || 16;
46 my $f = $options{-flags} || $options{-f} || SDL::SDL_ANYFORMAT();
47 my $r = $options{-red_size} || $options{-r} || 5;
48 my $g = $options{-green_size} || $options{-g} || 5;
49 my $b = $options{-blue_size} || $options{-b} || 5;
50 my $a = $options{-alpha_size} || $options{-a} || 0;
51 my $ras = $options{-red_accum_size} || $options{-ras} || 0;
52 my $gas = $options{-green_accum_size} || $options{-gas} || 0;
53 my $bas = $options{-blue_accum_size} || $options{-bas} || 0;
54 my $aas = $options{-alpha_accum_size} || $options{-aas} || 0;
55 my $db = $options{-double_buffer} || $options{-db} || 0;
57 my $bs = $options{-buffer_size} || $options{-bs} || 0;
58 my $st = $options{-stencil_size} || $options{-st} || 0;
59 my $async = $options{-asyncblit} || 0;
61 $f |= SDL::SDL_OPENGL() if ($options{-gl} || $options{-opengl});
62 $f |= SDL::SDL_FULLSCREEN() if ($options{-fullscreen} || $options{-full});
63 $f |= SDL::SDL_RESIZABLE() if ($options{-resizeable});
64 $f |= SDL::SDL_DOUBLEBUF() if ($db);
65 $f |= SDL::SDL_ASYNCBLIT() if ($async);
67 if ($f & SDL_OPENGL()) {
68 $SDL::App::USING_OPENGL = 1;
69 SDL::GLSetAttribute(SDL_GL_RED_SIZE(),$r) if ($r);
70 SDL::GLSetAttribute(SDL_GL_GREEN_SIZE(),$g) if ($g);
71 SDL::GLSetAttribute(SDL_GL_BLUE_SIZE(),$b) if ($b);
72 SDL::GLSetAttribute(SDL_GL_ALPHA_SIZE(),$a) if ($a);
74 SDL::GLSetAttribute(SDL_GL_RED_ACCUM_SIZE(),$ras) if ($ras);
75 SDL::GLSetAttribute(SDL_GL_GREEN_ACCUM_SIZE(),$gas) if ($gas);
76 SDL::GLSetAttribute(SDL_GL_BLUE_ACCUM_SIZE(),$bas) if ($bas);
77 SDL::GLSetAttribute(SDL_GL_ALPHA_ACCUM_SIZE(),$aas) if ($aas);
79 SDL::GLSetAttribute(SDL_GL_DOUBLEBUFFER(),$db) if ($db);
80 SDL::GLSetAttribute(SDL_GL_BUFFER_SIZE(),$bs) if ($bs);
81 SDL::GLSetAttribute(SDL_GL_DEPTH_SIZE(),$d);
83 $SDL::App::USING_OPENGL = 0;
85 my $self = \SDL::SetVideoMode($w,$h,$d,$f);
87 or croak SDL::GetError();
90 my $icon = new SDL::Surface -name => $ic;
91 SDL::WMSetIcon($$icon);
94 SDL::WMSetCaption($t,$it);
101 my ($self,$w,$h) = @_;
102 my $flags = SDL::SurfaceFlags($$self);
103 if ( $flags & SDL::SDL_RESIZABLE()) {
104 my $bpp = SDL::SurfaceBitsPerPixel($$self);
105 $$self = SDL::SetVideoMode($w,$h,$bpp,$flags);
114 $icon = shift || $title;
115 SDL::WMSetCaption($title,$icon);
117 return SDL::WMGetCaption();
127 return SDL::GetTicks();
131 return SDL::GetError();
141 SDL::WMToggleFullScreen($$self);
146 SDL::WMIconifyWindow();
149 sub grab_input ($$) {
150 my ($self,$mode) = @_;
151 SDL::WMGrabInput($mode);
155 my ($self,$href) = @_;
156 my $event = new SDL::Event;
157 while ( $event->wait() ) {
158 if ( ref($$href{$event->type()}) eq "CODE" ) {
159 &{$$href{$event->type()}}($event);
167 if ($SDL::App::USING_OPENGL) {
174 sub attribute ($$;$) {
175 my ($self,$mode,$value) = @_;
176 return undef unless ($SDL::App::USING_OPENGL);
177 if (defined $value) {
178 SDL::GLSetAttribute($mode,$value);
180 my $returns = SDL::GLGetAttribute($mode);
181 croak "SDL::App::attribute failed to get GL attribute" if ($$returns[0] < 0);
193 SDL::App - a SDL perl extension
197 my $app = new SDL::App (
198 -title => 'Application Title',
205 L<SDL::App> controls the root window of the of your SDL based application.
206 It extends the L<SDL_Surface> class, and provides an interface to the window
207 manager oriented functions.
213 C<SDL::App::new> initializes the SDL, creates a new screen,
214 and initializes some of the window manager properties.
215 C<SDL::App::new> takes a series of named parameters:
255 C<SDL::App::title> takes 0, 1, or 2 arguments. It returns the current
256 application window title. If one parameter is passed, both the window
257 title and icon title will be set to its value. If two parameters are
258 passed the window title will be set to the first, and the icon title
263 C<SDL::App::delay> takes 1 argument, and will sleep the application for
268 C<SDL::App::ticks> returns the number of ms since the application began.
272 C<SDL::App::error> returns the last error message set by the SDL.
276 C<SDL::App::resize> takes a new height and width of the application
277 if the application was originally created with the -resizable option.
281 C<SDL::App::fullscreen> toggles the application in and out of fullscreen mode.
285 C<SDL::App::iconify> iconifies the applicaiton window.
289 C<SDL::App::grab_input> can be used to change the input focus behavior of
290 the application. It takes one argument, which should be one of the following:
307 C<SDL::App::loop> is a simple event loop method which takes a reference to a hash
308 of event handler subroutines. The keys of the hash must be SDL event types such
309 as SDL_QUIT(), SDL_KEYDOWN(), and the like. The event method recieves as its parameter
310 the event object used in the loop.
314 my $app = new SDL::App -title => "test.app",
320 SDL_QUIT() => sub { exit(0); },
321 SDL_KEYDOWN() => sub { print "Key Pressed" },
324 $app->loop(\%actions);
328 C<SDL::App::sync> encapsulates the various methods of syncronizing the screen with the
329 current video buffer. C<SDL::App::sync> will do a fullscreen update, using the double buffer
330 or OpenGL buffer if applicable. This is prefered to calling flip on the application window.
332 =head2 attribute ( attr, [value] )
334 C<SDL::App::attribute> allows one to set and get GL attributes. By passing a value
335 in addition to the attribute selector, the value will be set. C<SDL:::App::attribute>
336 always returns the current value of the given attribute, or croaks on failure.
345 L<perl> L<SDL::Surface> L<SDL::Event> L<SDL::OpenGL>