| 1 |
package CursesChatMainwindow; |
| 2 |
use strict; |
| 3 |
use Curses; |
| 4 |
use Term::ReadKey; |
| 5 |
use Exporter; |
| 6 |
our @ISA = qw/Exporter/; |
| 7 |
our @EXPORT = qw/printline select_buffer current_buffer list_buffers clear_buffer clear_buffer_temporaries/; |
| 8 |
|
| 9 |
our $wins; |
| 10 |
|
| 11 |
our $HEIGHT; |
| 12 |
our $WIDTH; |
| 13 |
our $MAINWIN; |
| 14 |
our $stdiowatcher; |
| 15 |
our $winchwatcher; |
| 16 |
|
| 17 |
our $current_buffer_scroll = 0; |
| 18 |
our $current_buffer = "status"; |
| 19 |
our $winbuffers = {}; |
| 20 |
|
| 21 |
our $complete_cb = sub {}; |
| 22 |
our $input_cb = sub {}; |
| 23 |
|
| 24 |
our %completions; |
| 25 |
our @history; |
| 26 |
our $hist_ptr = -1; |
| 27 |
our $inputbuffer; |
| 28 |
our $inputoffset = 0; |
| 29 |
our $cursor = 0; |
| 30 |
our $statusline; |
| 31 |
our $msgline; |
| 32 |
|
| 33 |
sub handle_resize { |
| 34 |
my ($wc, $hc, $wpx, $hpx) = GetTerminalSize (); |
| 35 |
resizeterm ($hc, $wc); |
| 36 |
$MAINWIN->resize ($hc, $wc); |
| 37 |
$HEIGHT = $hc; |
| 38 |
$WIDTH = $wc; |
| 39 |
$MAINWIN->erase; |
| 40 |
refresh (); |
| 41 |
} |
| 42 |
|
| 43 |
sub complete { |
| 44 |
my ($line) = @_; |
| 45 |
my @words; |
| 46 |
while ($line ne '') { |
| 47 |
$line =~ s/^(\S+)// |
| 48 |
or $line =~ s/^(\s+)//; |
| 49 |
push @words, $1; |
| 50 |
} |
| 51 |
my $widx = @words - 1; |
| 52 |
unless (@words) { $words[0] = ''; $widx = 0; } |
| 53 |
|
| 54 |
my $word = $complete_cb->($words[$widx], $widx, @words); |
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$words[$widx] = defined $word ? $word : $words[$widx]; |
| 56 |
|
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return join '', @words; |
| 58 |
} |
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|
| 60 |
sub color2attr { |
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my $c = $_[0]; |
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my $attr; |
| 63 |
if ($c <= 63) { |
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$attr = COLOR_PAIR($c); |
| 65 |
} elsif ($c <= 127) { |
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$c -= 64; |
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$attr = COLOR_PAIR($c) | A_BOLD; |
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} elsif ($c <= 191) { |
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$c -= 128; |
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$attr = COLOR_PAIR($c) | A_UNDERLINE; |
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} else { |
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$c -= 192; |
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$attr = COLOR_PAIR($c) | A_UNDERLINE | A_BOLD; |
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} |
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$attr |
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} |
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|
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sub register_input_cb { |
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my ($cb) = @_; |
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$input_cb = $cb; |
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} |
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|
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sub register_complete_cb { |
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my ($cb) = @_; |
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$complete_cb = $cb; |
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} |
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|
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sub _draw_attr_line_at { |
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my ($line, $attrline) = @_; |
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|
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my @lcont = @$attrline; |
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my $li = 0; |
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|
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while (@lcont > 0) { |
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my ($color, $str) = (shift @lcont, shift @lcont); |
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while ($color eq 'f' or $color eq 't') { |
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if ($color eq 'f') { |
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($color, $str) = ($str, shift @lcont); |
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$str .= " " x ($WIDTH - length ($str)); |
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} elsif ($color eq 't') { |
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($color, $str) = ($str, shift @lcont); |
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} |
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} |
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|
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$MAINWIN->attron (color2attr ($color)); |
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|
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my $sl = length $str; |
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if (($li + $sl) > $WIDTH) { |
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$sl = $WIDTH - $li; |
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last if $sl < 0; |
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} |
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|
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$MAINWIN->addnstr ($line, $li, (substr $str, 0, $sl), $sl); |
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|
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$li += $sl; |
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|
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$MAINWIN->attroff (color2attr ($color)); |
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} |
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} |
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|
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sub clog { |
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open LOG, ">>/tmp/debuglog"; |
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print LOG @_; |
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close LOG; |
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} |
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|
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sub wrap_attr_lines { |
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my ($width, @lines) = @_; |
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|
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my @outlines; |
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|
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for my $line (@lines) { |
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my $wrap_padding = 0; |
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my @cline = @$line; |
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my @oline; |
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|
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my $outc = 0; |
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|
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while (@cline) { |
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my ($color, $str) = (shift @cline, shift @cline); |
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while ($color =~ m/^p/ or $color eq 't') { |
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if ($color =~ m/^p\s*(\d+)\s*$/) { |
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$wrap_padding = $1; |
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($color, $str) = ($str, shift @cline); |
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} elsif ($color eq 't') { |
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($color, $str) = ($str, shift @cline); |
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} |
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} |
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|
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my $strlen = length $str; |
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|
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if (($outc + $strlen) > $width) { |
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my $thisl = $width - $outc; |
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push @oline, ($color, substr $str, 0, $thisl); |
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push @outlines, [@oline]; |
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@oline = (); |
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unshift @cline, ($color, substr $str, $thisl); |
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if ($wrap_padding && ($wrap_padding + 7) < $width) { # 7 too few cols to display a sentence nicely |
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unshift @cline, (0, ' ' x $wrap_padding); |
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} |
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$outc = 0; |
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} else { |
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push @oline, ($color, $str); |
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$outc += $strlen; |
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} |
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} |
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|
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push @outlines, [@oline]; |
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} |
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|
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# my $i = 0; |
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# for my $line (@outlines) { |
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# clog ("LINE$i: ".join ('|',@$line)."\n"); |
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# $i++; |
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# } |
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|
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@outlines; |
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} |
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|
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sub refresh_lines { |
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$MAINWIN->erase; |
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|
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# TODO: cache the wrapped lines until something in the buffer |
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# or the window size changes |
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# NOTE: cache doesn't have to be invalidated for adding new lines! |
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my @revwin = @{$winbuffers->{$current_buffer} || []}; |
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my (@out_lines) = reverse wrap_attr_lines ($WIDTH, @revwin); |
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|
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if ($current_buffer_scroll > 0) { |
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if ($current_buffer_scroll > scalar (@out_lines)) { |
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$current_buffer_scroll = scalar (@out_lines); |
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} |
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@out_lines = splice @out_lines, $current_buffer_scroll; |
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clog ("SPLICE$current_buffer_scroll [".(scalar @out_lines)."]\n"); |
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} |
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|
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_draw_attr_line_at (0, $msgline || [0, 'nothing']); |
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_draw_attr_line_at ($HEIGHT - 2, $statusline || [0, 'nothing']); |
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|
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my $line = $HEIGHT - 3; |
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while ($line >= 1) { |
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my $l = shift @out_lines; |
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last unless defined $l; |
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_draw_attr_line_at ($line--, $l); |
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} |
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} |
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|
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sub refresh { |
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my ($onlyinput) = @_; |
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|
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refresh_lines unless $onlyinput; |
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|
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$MAINWIN->move ($HEIGHT - 1, 0); |
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$MAINWIN->clrtoeol (); |
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|
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my $padding = $WIDTH - int ($WIDTH / 1.2); |
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|
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if ($cursor >= ($WIDTH - $padding)) { |
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my $iobuf = $inputbuffer; |
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my $il = length $iobuf; |
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my $ncursor = $cursor; |
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my $lcursor = $cursor - int ($WIDTH / 1.2); |
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$ncursor -= $lcursor; |
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substr $iobuf, 0, $lcursor, ''; |
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$MAINWIN->addstr ($HEIGHT - 1, 0, (substr $iobuf, 0, $WIDTH)); |
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$MAINWIN->move ($HEIGHT - 1, $ncursor); |
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} else { |
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$MAINWIN->addstr ($HEIGHT - 1, 0, (substr $inputbuffer, 0, $WIDTH)); |
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$MAINWIN->move ($HEIGHT - 1, $cursor); |
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} |
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$MAINWIN->refresh; |
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} |
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|
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sub select_buffer { |
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$current_buffer = $_[0]; |
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$current_buffer_scroll = 0; |
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refresh (); |
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} |
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|
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sub current_buffer { |
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$current_buffer |
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} |
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|
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sub clear_buffer { |
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my ($buffer) = @_; |
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delete $winbuffers->{$buffer}; |
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} |
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|
| 249 |
sub clear_buffer_temporaries { |
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my ($buffer) = @_; |
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@{$winbuffers->{$buffer}} = grep { $_->[0] ne 't' } @{$winbuffers->{$buffer}}; |
| 252 |
refresh () if $buffer eq current_buffer (); |
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} |
| 254 |
|
| 255 |
sub list_buffers { |
| 256 |
keys %$winbuffers; |
| 257 |
} |
| 258 |
|
| 259 |
sub printline { |
| 260 |
if ($_[0] eq 'statusline') { |
| 261 |
$statusline = $_[1]; |
| 262 |
} elsif ($_[0] eq 'msgline') { |
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$msgline = $_[1]; |
| 264 |
} else { |
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push @{$winbuffers->{(defined $_[0] ? $_[0] : $current_buffer)}}, $_[1]; |
| 266 |
} |
| 267 |
refresh (); |
| 268 |
} |
| 269 |
|
| 270 |
sub input { |
| 271 |
my $c = $MAINWIN->getch; |
| 272 |
|
| 273 |
my $only_input = 1; |
| 274 |
|
| 275 |
if ($c == KEY_BACKSPACE) { |
| 276 |
if ($cursor > 0) { |
| 277 |
substr $inputbuffer, --$cursor, 1, ''; |
| 278 |
} |
| 279 |
} elsif ($c == KEY_DC) { |
| 280 |
substr $inputbuffer, $cursor, 1, ''; |
| 281 |
} elsif ($c == KEY_LEFT) { |
| 282 |
$cursor-- if $cursor > 0; |
| 283 |
} elsif ($c == KEY_RIGHT) { |
| 284 |
$cursor++ if (($cursor + 1) <= (length $inputbuffer)); |
| 285 |
} elsif ($c == KEY_PPAGE) { |
| 286 |
$current_buffer_scroll += int ($HEIGHT / 2); |
| 287 |
$only_input = 0; |
| 288 |
} elsif ($c == KEY_NPAGE) { |
| 289 |
$current_buffer_scroll -= int ($HEIGHT / 2); |
| 290 |
$current_buffer_scroll = 0 if $current_buffer_scroll < 0; |
| 291 |
$only_input = 0; |
| 292 |
} elsif ($c == KEY_END) { |
| 293 |
$cursor = length $inputbuffer; |
| 294 |
} elsif ($c == KEY_HOME) { |
| 295 |
$cursor = 0; |
| 296 |
} elsif ($c eq "\t") { |
| 297 |
my $compl_line = substr $inputbuffer, 0, $cursor; |
| 298 |
$compl_line = complete ($compl_line); |
| 299 |
substr $inputbuffer, 0, $cursor, $compl_line; |
| 300 |
$cursor = length $compl_line; |
| 301 |
} elsif ($c eq "\n") { |
| 302 |
unshift @history, $inputbuffer; |
| 303 |
$input_cb->($inputbuffer); |
| 304 |
$inputbuffer = ""; |
| 305 |
$cursor = 0; |
| 306 |
$hist_ptr = -1; |
| 307 |
} elsif ($c == KEY_UP) { |
| 308 |
if (($hist_ptr + 1) < scalar (@history)) { |
| 309 |
if ($hist_ptr < 0 or $history[$hist_ptr] ne $inputbuffer) { |
| 310 |
if ($inputbuffer =~ /\S/) { |
| 311 |
unshift @history, $inputbuffer; |
| 312 |
$hist_ptr++; |
| 313 |
} |
| 314 |
} |
| 315 |
|
| 316 |
$hist_ptr++; |
| 317 |
|
| 318 |
$inputbuffer = $history[$hist_ptr]; |
| 319 |
$cursor = length $inputbuffer; |
| 320 |
} |
| 321 |
} elsif ($c == KEY_DOWN) { |
| 322 |
if ($hist_ptr - 1 <= -1) { |
| 323 |
$inputbuffer = ""; |
| 324 |
$cursor = 0; |
| 325 |
$hist_ptr = -1; |
| 326 |
|
| 327 |
} elsif (($hist_ptr - 1) >= 0) { |
| 328 |
if ($hist_ptr < 0 or $history[$hist_ptr] ne $inputbuffer) { |
| 329 |
if ($inputbuffer =~ /\S/) { |
| 330 |
unshift @history, $inputbuffer; |
| 331 |
$hist_ptr++; |
| 332 |
} |
| 333 |
} |
| 334 |
|
| 335 |
$inputbuffer = $history[--$hist_ptr]; |
| 336 |
$cursor = length $inputbuffer; |
| 337 |
} |
| 338 |
} else { |
| 339 |
if ($c > 255) { |
| 340 |
#d# printline (status => [0, "SPECIAL[$c]"]); |
| 341 |
} else { |
| 342 |
if (ord ($c) == 27) { |
| 343 |
my $nxt = $MAINWIN->getch; |
| 344 |
$input_cb->(undef, $nxt); |
| 345 |
return; |
| 346 |
} else { |
| 347 |
substr $inputbuffer, $cursor++, 0, $c; |
| 348 |
} |
| 349 |
} |
| 350 |
} |
| 351 |
|
| 352 |
refresh ($only_input); |
| 353 |
} |
| 354 |
|
| 355 |
sub init { |
| 356 |
my $win = $MAINWIN = Curses->new; |
| 357 |
cbreak; |
| 358 |
noecho; |
| 359 |
clear; |
| 360 |
$win->keypad (1); |
| 361 |
($HEIGHT, $WIDTH) = ($LINES, $COLS); |
| 362 |
if (has_colors ()) { |
| 363 |
start_color (); |
| 364 |
use_default_colors (); |
| 365 |
my $colors = ""; |
| 366 |
my (@ansi_tab) = qw/0 4 2 6 1 5 3 7/; |
| 367 |
for (my $i = 1; $i < $COLOR_PAIRS; $i++) { |
| 368 |
init_pair ($i, $ansi_tab[$i & 7], $i <= 7 ? -1 : $ansi_tab[$i >> 3]); |
| 369 |
} |
| 370 |
} |
| 371 |
$win->attron (A_NORMAL); |
| 372 |
$winchwatcher = AnyEvent->signal (signal => 'WINCH', cb => sub { handle_resize }); |
| 373 |
$stdiowatcher = AnyEvent->io (fh => \*STDIN, poll => "r", cb => sub { |
| 374 |
input; |
| 375 |
}); |
| 376 |
} |
| 377 |
|
| 378 |
sub end { |
| 379 |
endwin; |
| 380 |
} |
| 381 |
|
| 382 |
sub print_colors { |
| 383 |
my $l = []; |
| 384 |
for (my $i = 0; $i <= 256; $i++) { |
| 385 |
push @$l, $i, (sprintf "[%3d]", $i); |
| 386 |
if (($i + 1) % 8 == 0) { |
| 387 |
printline ($current_buffer => $l); |
| 388 |
$l = []; |
| 389 |
} |
| 390 |
} |
| 391 |
printline ($current_buffer => $l); |
| 392 |
} |
| 393 |
#printline ("TESTE!!!"); |
| 394 |
|
| 395 |
1; |
