| 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/; |
| 8 |
|
| 9 |
our $HEIGHT; |
| 10 |
our $WIDTH; |
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our $MAINWIN; |
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our $stdiowatcher; |
| 13 |
|
| 14 |
our $current_buffer_scroll = 0; |
| 15 |
our $current_buffer = "status"; |
| 16 |
our $winbuffers = {}; |
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|
| 18 |
our $complete_cb = sub {}; |
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our $input_cb = sub {}; |
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|
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our %completions; |
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our $first_compl; |
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our @history; |
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our $inputbuffer; |
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our $inputoffset = 0; |
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our $cursor = 0; |
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our $statusline; |
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|
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$SIG{WINCH} = sub { |
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my ($wc, $hc, $wpx, $hpx) = GetTerminalSize (); |
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resizeterm ($hc, $wc); |
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$MAINWIN->resize ($hc, $wc); |
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$HEIGHT = $hc; |
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$WIDTH = $wc; |
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$MAINWIN->erase; |
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refresh (); |
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}; |
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|
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sub complete { |
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my ($line) = @_; |
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my @words; |
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while ($line ne '') { |
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$line =~ s/^(\S+)// |
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or $line =~ s/^(\s+)//; |
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push @words, $1; |
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} |
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my $widx = @words - 1; |
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unless (@words) { $words[0] = ''; $widx = 0; } |
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# while ($widx >= 0 && $words[$widx] =~ /^\s*$/) { |
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# $widx--; |
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# } |
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# return $line unless $widx >= 0; |
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|
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$first_compl = defined $first_compl ? $first_compl : $words[$widx]; |
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my $word = $complete_cb->($words[$widx], $first_compl, $widx, @words); |
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$words[$widx] = defined $word ? $word : $words[$widx]; |
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|
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return join '', @words; |
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} |
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|
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sub color2attr { |
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my $c = $_[0]; |
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my $attr; |
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if ($c <= 63) { |
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$attr = COLOR_PAIR($c); |
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} 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, $str) = (shift @lcont, shift @lcont); |
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|
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$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, $str) = (shift @cline, shift @cline); |
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if ($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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} |
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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 < $width) { |
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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 ($HEIGHT - 2, $statusline || [0, 'nothing']); |
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|
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my $line = $HEIGHT - 3; |
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while ($line >= 0) { |
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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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$current_buffer |
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} |
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|
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sub list_buffers { |
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keys %$winbuffers; |
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} |
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|
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sub printline { |
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if ($_[0] eq 'statusline') { |
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$statusline = $_[1]; |
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} else { |
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push @{$winbuffers->{(defined $_[0] ? $_[0] : $current_buffer)}}, $_[1]; |
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} |
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refresh (); |
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} |
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|
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sub clear_completion_state { |
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# erase completion state |
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$first_compl = undef; |
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} |
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|
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sub input { |
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my $c = $MAINWIN->getch; |
| 252 |
|
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if ($c == KEY_BACKSPACE) { |
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if ($cursor > 0) { |
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substr $inputbuffer, --$cursor, 1, ''; |
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} |
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clear_completion_state; |
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} elsif ($c == KEY_DC) { |
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substr $inputbuffer, $cursor, 1, ''; |
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clear_completion_state; |
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} elsif ($c == KEY_LEFT) { |
| 262 |
$cursor-- if $cursor > 0; |
| 263 |
clear_completion_state; |
| 264 |
} elsif ($c == KEY_RIGHT) { |
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$cursor++ if (($cursor + 1) <= (length $inputbuffer)); |
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clear_completion_state; |
| 267 |
} elsif ($c == KEY_PPAGE) { |
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$current_buffer_scroll += int ($HEIGHT / 2); |
| 269 |
} elsif ($c == KEY_NPAGE) { |
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$current_buffer_scroll -= int ($HEIGHT / 2); |
| 271 |
$current_buffer_scroll = 0 if $current_buffer_scroll < 0; |
| 272 |
} elsif ($c eq "\t") { |
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my $compl_line = substr $inputbuffer, 0, $cursor; |
| 274 |
$compl_line = complete ($compl_line); |
| 275 |
substr $inputbuffer, 0, $cursor, $compl_line; |
| 276 |
$cursor = length $compl_line; |
| 277 |
} elsif ($c eq "\n") { |
| 278 |
push @history, $inputbuffer; |
| 279 |
$input_cb->($inputbuffer); |
| 280 |
$inputbuffer = ""; |
| 281 |
$cursor = 0; |
| 282 |
clear_completion_state; |
| 283 |
} else { |
| 284 |
if ($c > 255) { |
| 285 |
printline (status => [0, "SPECIAL[$c]"]); |
| 286 |
} else { |
| 287 |
if (ord ($c) == 27) { |
| 288 |
my $nxt = $MAINWIN->getch; |
| 289 |
$input_cb->(undef, $nxt); |
| 290 |
return; |
| 291 |
} else { |
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clear_completion_state; |
| 293 |
substr $inputbuffer, $cursor++, 0, $c; |
| 294 |
} |
| 295 |
} |
| 296 |
} |
| 297 |
refresh (); |
| 298 |
} |
| 299 |
|
| 300 |
sub init { |
| 301 |
my $win = $MAINWIN = Curses->new; |
| 302 |
cbreak; |
| 303 |
noecho; |
| 304 |
clear; |
| 305 |
$win->keypad (1); |
| 306 |
($HEIGHT, $WIDTH) = ($LINES, $COLS); |
| 307 |
if (has_colors ()) { |
| 308 |
start_color (); |
| 309 |
use_default_colors (); |
| 310 |
my $colors = ""; |
| 311 |
my (@ansi_tab) = qw/0 4 2 6 1 5 3 7/; |
| 312 |
for (my $i = 1; $i < $COLOR_PAIRS; $i++) { |
| 313 |
init_pair ($i, $ansi_tab[$i & 7], $i <= 7 ? -1 : $ansi_tab[$i >> 3]); |
| 314 |
} |
| 315 |
} |
| 316 |
$win->attron (A_NORMAL); |
| 317 |
$stdiowatcher = AnyEvent->io (fh => \*STDIN, poll => "r", cb => sub { |
| 318 |
input; |
| 319 |
}); |
| 320 |
} |
| 321 |
|
| 322 |
sub end { |
| 323 |
endwin; |
| 324 |
} |
| 325 |
|
| 326 |
sub print_colors { |
| 327 |
my $l = []; |
| 328 |
for (my $i = 0; $i <= 256; $i++) { |
| 329 |
push @$l, $i, (sprintf "[%3d]", $i); |
| 330 |
if (($i + 1) % 8 == 0) { |
| 331 |
printline ($current_buffer => $l); |
| 332 |
$l = []; |
| 333 |
} |
| 334 |
} |
| 335 |
printline ($current_buffer => $l); |
| 336 |
} |
| 337 |
#printline ("TESTE!!!"); |
| 338 |
|
| 339 |
1; |
