X-Git-Url: http://git.shiar.net/descalc.git/blobdiff_plain/7db84757c6ba80836bc8c2cc9de326f16862a2cd..4e1d9535fda6685e53ce570ca4e4cd6c260f55d3:/05_disp_stdout.pm

diff --git a/05_disp_stdout.pm b/05_disp_stdout.pm
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+++ b/05_disp_stdout.pm
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+# console output for DCT, by Shiar
+
+# 1.12.0 200411032130 - handle input via Term::ReadKey; define main loop
+# 1.11.0 200410152225 - class in file name, so check is not needed anymore
+# 1.10.1 200410142200 - startup message omitted (now shown by main)
+# 1.10.0 200410140120 - never clear screen (just let it scroll)
+#                     - try to get width/height from environment vars
+#                     - use escape sequences for clear/reposition/invert
+#                     - print everything to STDOUT
+
+use strict;
+use warnings;
+
+use Term::ReadKey;
+
+push @{$hook{init}}, sub {
+	ReadMode 3;  # cbreak mode
+
+#	print "\ec";  # reset (clear screen, go home)
+#	print "\e[4mDCT $::VERSION\e[24m ";  # print intro (underlined)
+	END {
+		ReadMode 0;
+		print "\n";
+	}
+
+	$set{height} = $ENV{LINES}-2 if $ENV{LINES} and $ENV{LINES}>=3;
+	$set{width} = $ENV{COLUMNS} if $ENV{COLUMNS};
+}; # init
+
+push @{$hook{showerror}}, sub {
+	print "\n\a\e[7m$_[0]\e[27m";  # bell and reverse video
+}; # showerror
+
+push @{$hook{showstack}}, sub {
+	for (reverse 0..@stack-1) {
+		print "\n$_: ", showval($stack[$_], $set{base});
+	} # show stack
+	print "\n> ";  # prompt
+}; # showstack
+
+push @{$hook{showentry}}, sub {
+	print "\e[3G\e[K", $_[0];  # cursor to column #3; erase line
+}; # showentry
+
+$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   => "console output",
+	version => "1.12",
+};
+