--- M6502/Screen.pm	2007/07/30 22:27:47	37
+++ M6502/Screen.pm	2007/08/01 12:57:15	76
@@ -8,11 +8,17 @@
 use SDL::App;
 use SDL::Rect;
 use SDL::Color;
+use SDL::Constants;
 
 use Carp qw/confess/;
+use Data::Dump qw/dump/;
 
-use base qw(Class::Accessor);
-__PACKAGE__->mk_accessors(qw(debug scale show_mem mem_dump trace app));
+use base qw(Class::Accessor Prefs);
+__PACKAGE__->mk_accessors(qw(app));
+
+=head1 NAME
+
+Screen - simulated 256*256 pixels monochrome screen using SDL
 
 =head2 open_screen
 
@@ -25,6 +31,8 @@
 sub open_screen {
 	my $self = shift;
 
+	$self->prefs;
+
 	if ( ! $self->scale ) {
 		$self->scale( 1 );
 		warn "using default unscaled display\n";
@@ -35,7 +43,8 @@
 		-height => 256 * $self->scale,
 		-depth  => 16,
 	);
-	#$app->grab_input( 0 );
+	#$app->grab_input( SDL_GRAB_QUERY );
+	$app->grab_input( SDL_GRAB_OFF );
 
 	warn "# created SDL::App\n";
 	$self->app( $app );
@@ -48,6 +57,9 @@
 my $green	= SDL::Color->new( -r => 0x00, -g => 0xff, -b => 0x00 );
 my $blue	= SDL::Color->new( -r => 0x00, -g => 0x00, -b => 0xff );
 
+my $rect_screen = SDL::Rect->new( -x => 0, -y => 0, -width => 256, -height => 256 );
+my $rect_mem = SDL::Rect->new( -x => 256, -y => 0, -width => 256, -height => 256 );
+
 =head2 p
 
  $screen->p( $x, $y, 1 );
@@ -107,7 +119,7 @@
 	my $mask = 1;
 	my $scale = $self->scale;
 
-#	printf "## vram %04x %02x*%02x %02x\n", $offset, $x, $y, $byte if $self->trace;
+	printf "## vram %04x %02x*%02x %02x\n", $offset, $x, $y, $byte if $self->trace;
 
 	foreach ( 0 .. 7 ) {
 		my $on = $byte & $mask;
@@ -138,7 +150,7 @@
 	return unless $self->show_mem && $self->app;
 
 	my ( $x, $y ) = $self->mem_xy( $addr );
-	warn sprintf "## mem %04x %02x %02x %02d*%02d\n", $addr, $r, $g, $x, $y if $self->trace;
+	warn sprintf "## mem %04x %02x %02x %02d*%02d\n", $addr, $r, $g, $x, $y if $self->debug;
 
 	my $col = SDL::Color->new( -r => $r, -g => $g, -b => $b );
 	$self->app->pixel( $x, $y, $col );
@@ -160,4 +172,83 @@
 	$app->sync;
 }
 
+=head2 render
+
+Render one frame of video ram
+
+  $self->render( @video_memory );
+
+=cut
+
+sub render {
+	my $self = shift;
+
+	die "this function isn't supported if scale isn't 1" unless $self->scale == 1;
+
+	my $pixels = pack("C*", @_);
+
+	my $vram = SDL::Surface->new(
+		-width => 256,
+		-height => 256,
+		-depth => 1,	# 1 bit per pixel
+		-pitch => 32,	# bytes per line
+		-from => $pixels,
+	);
+	$vram->set_colors( 0, $black, $white, $red );
+	$vram->display_format;
+
+	my $rect = SDL::Rect->new( -x => 0, -y => 0, -width => 256, -height => 256 );
+	$vram->blit( $rect, $app, $rect_screen );
+
+	$app->sync;
+}
+
+=head2 render_mem
+
+  $self->render_mem( @ram );
+
+=cut
+
+sub render_mem {
+	my $self = shift;
+
+	return unless $self->show_mem;
+
+	my $pixels = pack("C*", @_);
+
+	my $vram = SDL::Surface->new(
+		-width => 256,
+		-height => 256,
+		-depth => 8,	# 1 bit per pixel
+		-pitch => 256,	# bytes per line
+		-from => $pixels,
+		-Rmask => 0xffff00ff,
+		-Gmask => 0xffff00ff,
+		-Bmask => 0xffff00ff,
+	);
+
+	$vram->display_format;
+
+	my $rect = SDL::Rect->new( -x => 0, -y => 0, -width => 256, -height => 256 );
+	$vram->blit( $rect, $app, $rect_mem );
+
+	$app->sync;
+}
+
+=head1 SEE ALSO
+
+L<Orao> is sample implementation using this module
+
+=head1 AUTHOR
+
+Dobrica Pavlinusic, C<< <dpavlin@rot13.org> >>
+
+=head1 COPYRIGHT & LICENSE
+
+Copyright 2007 Dobrica Pavlinusic, All Rights Reserved.
+
+This program is free software; you can redistribute it and/or modify it
+under the same terms as Perl itself.
+
+=cut
 1;