2 |
|
|
3 |
use strict; |
use strict; |
4 |
use Term::Screen; |
use Term::Screen; |
5 |
use Carp qw/confess/; |
use Carp qw/cluck/; |
6 |
use Data::Dump qw/dump/; |
use Data::Dump qw/dump/; |
7 |
|
|
8 |
my $data = <<'EOF'; |
my $data = <<'EOF'; |
75 |
|
|
76 |
sub chunk { |
sub chunk { |
77 |
my $t = shift; |
my $t = shift; |
78 |
return unless length($t) > 2; |
cluck "expected line" unless defined $t; |
79 |
return substr($t,1,$scr->cols); |
return substr($t,0,$scr->cols); |
80 |
} |
} |
81 |
|
|
82 |
sub redraw_line { |
sub redraw_line { |
95 |
redraw_line( $l, $line ); |
redraw_line( $l, $line ); |
96 |
last if ($l == $#lines); |
last if ($l == $#lines); |
97 |
} |
} |
98 |
|
selected(0); |
99 |
} |
} |
100 |
|
|
101 |
sub status { |
sub status { |
128 |
} |
} |
129 |
redraw; |
redraw; |
130 |
} elsif ( $d > 0 && $screen_line == $last_screen_line ) { |
} elsif ( $d > 0 && $screen_line == $last_screen_line ) { |
131 |
if ( $pos <= $#lines ) { |
if ( $pos < $#lines ) { |
132 |
$top_screen_line++; |
$top_screen_line++; |
133 |
$pos++; |
$pos++; |
134 |
} else { |
} else { |
169 |
# first line on screen? |
# first line on screen? |
170 |
if ( $pos == $top_screen_line ) { |
if ( $pos == $top_screen_line ) { |
171 |
$top_screen_line -= $lines_on_screen; |
$top_screen_line -= $lines_on_screen; |
172 |
$top_screen_line = 0; |
$top_screen_line = 0 if $top_screen_line < 0; |
|
$pos = $top_screen_line; |
|
173 |
redraw; |
redraw; |
|
selected( $pos ); |
|
|
} else { |
|
|
selected( -( $pos - $top_screen_line ) ); |
|
174 |
} |
} |
175 |
|
selected( -( $pos - $top_screen_line ) ); |
176 |
} elsif ($key eq 'pgdn' ) { |
} elsif ($key eq 'pgdn' ) { |
177 |
# last line on screen? |
# last line on screen? |
178 |
if ( $pos - $top_screen_line == $lines_on_screen ) { |
if ( $pos - $top_screen_line == $lines_on_screen ) { |
179 |
$top_screen_line += $lines_on_screen; |
$top_screen_line += $lines_on_screen; |
180 |
$top_screen_line = $#lines - $lines_on_screen if $top_screen_line > $#lines - $lines_on_screen; |
$top_screen_line = $#lines - $lines_on_screen if $top_screen_line >= $#lines - $lines_on_screen; |
|
$pos = $top_screen_line; |
|
181 |
redraw; |
redraw; |
|
selected( $pos ); |
|
|
} else { |
|
|
selected( $top_screen_line + $scr->rows - $pos - 3 ); |
|
182 |
} |
} |
183 |
|
selected( $top_screen_line + $lines_on_screen - $pos ); |
184 |
} |
} |
185 |
|
|
186 |
$status_text = sprintf("pos: %-3d sel_pos: %-3d top_screen_line: %-3d", $pos, $sel_pos, $top_screen_line ); |
$status_text = sprintf("pos: %-3d sel_pos: %-3d top_screen_line: %-3d", $pos, $sel_pos, $top_screen_line ); |
192 |
|
|
193 |
status; |
status; |
194 |
|
|
195 |
redraw if lc($key) eq 'r'; |
# CTRL+L |
196 |
|
redraw if ord($key) eq 0x0c; |
197 |
|
|
198 |
exit if (lc($key) eq 'q'); |
exit if (lc($key) eq 'q'); |
199 |
} |
} |