X-Git-Url: http://git.shiar.net/descalc.git/blobdiff_plain/4e1d9535fda6685e53ce570ca4e4cd6c260f55d3..090ac304afe801cb3e72ced0941ff2a874a98cc9:/04_disp_curses.pm

diff --git a/04_disp_curses.pm b/04_disp_curses.pm
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+# ncurses output for DCT, by Shiar
+
+# 1.13.0 200411042100 - hook to display and handle menu
+#                     - submenus are named instead of numbered
+#                     - refresh hook renamed to showall
+# 1.12.0 200410312200 - define main loop (get input from Term::ReadKey)
+# 1.11.0 200410152225 - uses class in filename instead of $set{display} check
+# 1.10.0 200410140120 - all output functions seperated from main
+
+use strict;
+use warnings;
+
+use Curses;
+use Term::ReadKey;
+
+use vars qw(%falias $path);
+require $path."termcommon.pm";
+
+sub setsize () {
+	$set{height} = $LINES-3 if $LINES>=3;
+	$set{width} = $COLS if $COLS;
+	$set{menushow} = int($set{width}/(4+$set{width}/20))+1;  # menu items to show simultaneously
+} # setsize
+
+push @{$hook{init}}, sub {
+	initscr;
+	ReadMode 3;  # cbreak mode
+
+	END {
+		ReadMode 0;
+		endwin;
+	} # restore terminal on quit
+
+	$SIG{WINCH} = sub {
+		endwin;
+		refresh;  # setup for new screen size
+		setsize();  # adjust for new sizes
+		redraw(all=>1);  # queue complete refresh
+		draw();  # redraw rightnow
+	};
+
+	setsize();
+}; # init
+
+push @{$hook{showerror}}, sub {
+	attron(A_REVERSE);
+	addstr(0, 0, shift);
+	attroff(A_REVERSE);
+	clrtoeol;
+	refresh;
+
+	ReadKey; # wait for confirm
+	1 while defined ReadKey(-1); # clear key buffer
+}; # showerror
+
+push @{$hook{showstack}}, sub {
+	for (0..@stack-1) {
+		addstr($set{height}-$_, 1, "$_: ".showval($stack[$_], $set{base}));
+		clrtoeol;
+	} # show stack
+	clrtoeol($set{height}-@stack, 1);
+}; # showstack
+
+push @{$hook{showmenu}}, sub {
+	clrtoeol($set{height}+2, 1);
+	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+$//;
+		addstr($set{height}+2, $set{width}/$set{menushow}*$nr, $_);
+		attron(A_REVERSE);
+		addstr($s);
+		attroff(A_REVERSE);
+		addch('>') 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{$_}] and return;  # execute found menu item instead
+	error("no such menu entry");
+	return 1;
+}; # precmd (menu item selection)
+
+push @{$hook{showall}}, sub {
+	clear;
+	addstr($set{height}+1, 0, "> ");  # prompt
+}; # showall
+
+push @{$hook{showentry}}, sub {
+	addstr($set{height}+1, 2, $_[0]);
+	clrtoeol;
+	refresh;
+}; # showentry
+
+$hook{main} = sub {
+	while (1) {
+		draw();
+
+		my $key = ReadKey;  # wait for user input
+		if ($key eq chr 27) {
+			$key .= $_ while defined ($_ = ReadKey(-1));  # read additional keys
+		} # escape sequence
+
+		onkey($key);
+	} # input loop
+}; # main
+
+return {
+	author  => "Shiar",
+	title   => "curses output",
+	version => "1.13",
+};
+