X-Git-Url: http://git.shiar.net/descalc.git/blobdiff_plain/4e1d9535fda6685e53ce570ca4e4cd6c260f55d3..090ac304afe801cb3e72ced0941ff2a874a98cc9:/03_disp_slang.pm

diff --git a/03_disp_slang.pm b/03_disp_slang.pm
new file mode 100644
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--- /dev/null
+++ b/03_disp_slang.pm
@@ -0,0 +1,118 @@
+# s-lang output for DCT, by Shiar
+
+# 1.13.0 200411042100 - menu i/o functions
+#                     - refresh hook renamed to showall
+# 1.12.0 200411032145 - define main loop
+#                     - use slang key reading functions
+# 1.11.0 200410291300 - basic output using Term::Slang (ported from Curses)
+
+use strict;
+use warnings;
+
+use Term::Slang qw(:all);
+
+use vars qw(%falias $path);
+require $path."termcommon.pm";
+
+push @{$hook{init}}, sub {
+	SLtt_get_terminfo and exit;
+	SLang_init_tty(-1, 0, 1);
+	SLsmg_init_smg;
+	SLtt_set_color(1, 0, 'black', 'lightgray');
+	
+	END { SLsmg_reset_smg; SLang_reset_tty; } # shutdown display system
+
+	# where are $SLtt_Screen_Rows and $SLtt_Screen_Cols?
+	($set{height}, $set{width}) = SLtt_get_screen_size;
+	$set{height} -= 3;
+	$set{menushow} = int($set{width}/(4+$set{width}/20))+1;  # menu items to show simultaneously
+}; # init
+
+push @{$hook{showerror}}, sub {
+	my $error = shift;
+	SLsmg_draw_box(0, 0, 3, length($error)+4);
+	SLsmg_gotorc(1, 1);
+	SLsmg_write_string(" $error ");
+	SLsmg_refresh;
+
+	SLang_getkey;  # wait for confirm
+	SLang_getkey while SLang_input_pending(0)==1; # clear key buffer
+}; # showerror
+
+push @{$hook{showstack}}, sub {
+	for (0..@stack-1) {
+		SLsmg_gotorc($set{height}-$_, 1);
+		SLsmg_write_string("$_: ".showval($stack[$_], $set{base}));  # prompt
+		SLsmg_erase_eol;
+	} # show stack
+	SLsmg_gotorc($set{height}-@stack, 1);
+	SLsmg_erase_eol;
+}; # showstack
+
+push @{$hook{showmenu}}, sub {
+	SLsmg_gotorc($set{height}+2, 1);
+	SLsmg_erase_eol;
+	my $nr = -1;
+	for (grep exists $menu[0][$_], $menu[0][0]+1..$menu[0][0]+$set{menushow}) {
+		$nr++;
+		next unless defined $menu[0][$_];
+		my $sub = (my $s = $menu[0][$_]) =~ s/>[\w ]+$//;
+		SLsmg_gotorc($set{height}+2, $set{width}/$set{menushow}*$nr);
+		SLsmg_write_string($_);
+		SLsmg_reverse_video; # reverse
+		SLsmg_write_string($s);
+		SLsmg_normal_video;
+		SLsmg_write_string('>') if $sub;  # indicate submenu
+	} # display menu txts
+}; # showmenu
+
+$action{more} = [-1, sub {
+	$menu[0][0] += $set{menushow};
+	$menu[0][0] = 0 if $menu[0][0] > @{$menu[0]};
+	$_->() for @{$hook{showmenu}};
+}]; # tab
+
+unshift @{$hook{precmd}}, sub {
+	exists $falias{$_} or return;  # handle function key
+	if ($falias{$_}==0) {
+		shift @menu if @menu>1;  # remove current submenu
+		redraw(menu=>1);
+		return 1;
+	} # escape (go to parent)
+	$_ = $menu[0][$falias{$_}] and return;  # execute found menu item instead
+	error("no such menu entry");
+	return 1;
+}; # precmd
+
+push @{$hook{showall}}, sub {
+	SLsmg_cls;
+	SLsmg_gotorc($set{height}+1, 0);
+	SLsmg_write_string("> ");  # prompt
+}; # showall
+
+push @{$hook{showentry}}, sub {
+	SLsmg_gotorc($set{height}+1, 2);
+	SLsmg_write_string($_[0]);
+	SLsmg_erase_eol;
+	SLsmg_refresh;
+}; # showentry
+
+$hook{main} = sub {
+	while (1) {
+		draw();
+
+		my $key = chr SLang_getkey;  # wait for user input
+		if ($key eq chr 27) {
+			$key .= chr SLang_getkey while SLang_input_pending(0)==1;  # read additional keys
+		} # escape sequence
+#		error(join " ", map ord, split //, $key); #debug
+		onkey($key);
+	} # input loop
+}; # main
+
+return {
+	author  => "Shiar",
+	title   => "slang output",
+	version => "1.13",
+};
+