release 1.12.1

[descalc.git] / 04_disp_slang.pm

diff --git a/04_disp_slang.pm b/04_disp_slang.pm
new file mode 100644 (file)
index 0000000..90dccf6
--- /dev/null
+++ b/04_disp_slang.pm
@@ -0,0 +1,76 @@
+# s-lang output for DCT, by Shiar
+
+# 1.12.0 200411032145 - define main loop
+#                     - use slang key reading functions
+# 1.11.0 200410291300 - 
+
+use strict;
+use warnings;
+
+use Term::Slang qw(:all);
+
+push @{$hook{init}}, sub {
+       SLtt_get_terminfo and exit;
+       SLang_init_tty(-1, 0, 1);
+       SLsmg_init_smg;
+       
+       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;
+       $set{height} -= 2;
+}; # init
+
+push @{$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 @{$hook{refresh}}, sub {
+       SLsmg_cls;
+       SLsmg_gotorc($set{height}+1, 0);
+       SLsmg_write_string("> ");  # prompt
+}; # refresh
+
+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 => "1.12",
+};
+