http://www.perlmonks.org?node_id=313254


in reply to Re: $_ is null in Tk:Scrolled search?
in thread $_ is null in Tk:Scrolled search?

Man that works sweet. Except the comments by themselves of course. I raped your code and implemented it in what I was doing and it works pretty good. It solved 2 of my problems at once. The commented text and the coloring on input. I am going to work on the comments by themselves in a little bit. I will post back if I come up with an answer. Edit 1:Got the code working with comments without keywords on same line.
#!/usr/bin/winperl use strict; use warnings; use Tk; our @Red_Keywords = qw(print sprintf); our @Blue_Keywords = qw(if elsif else my our use sub); our $Comment = '#|//'; our @Comment = ("\#", "\//"); our $All_Keys = "print|sprintf|if|elsif|else|my|our|use|sub|while|fore +ach|loop|split| glob|substr|length|open|close|chomp|chop|next|unless" +; our %Highlights = ( Red_Keyword => [qw(red bold)], Blue_Keyword => [qw(blue bold)], Comment => [qw(orange italic)], ); setup_window(); MainLoop; sub setup_window { my $mw = MainWindow->new(); my $t = $mw->Scrolled('Text', -font => ['Courier New', 10])->pack() +; $t->tagConfigure('blue', -foreground => 'blue'); $t->tagConfigure('red', -foreground => 'red'); $t->tagConfigure('orange', -foreground => 'orange'); $t->tagConfigure('gray', -foreground => 'gray'); $t->tagConfigure('bold', -font => ['Courier New', 10, 'bold']); $t->tagConfigure('italic', -font => ['Courier New', 10, 'italic']); $t->bind( '<KeyRelease>', # Automatically prepends $t to called sub's args [\&highlight_range, 'insert linestart', 'insert lineend'], ); # Paste events may include more than one line to be formatted, # so we rehighlight the entire text. $t->bind( '<<Paste>>', [\&highlight_range, '1.0', 'end'], ); $t->focus(); } # Remove all formatting so that updates will unhighlight things proper +ly sub unhighlight_range { my $t = shift; my $start = shift; my $end = shift; foreach my $style (keys %Highlights) { foreach my $tag (@{$Highlights{$style}}) { $t->tagRemove($tag, $start, $end); } } } sub highlight_range { my $t = shift; my $start = shift; my $end = shift; unhighlight_range($t, $start, $end); foreach my $comm (@Comment) { my $word_len = length $comm; my $next = $start; while (my $comment = $t->search(-regexp => $comm, $next, $end)) { $next = "$comment + $word_len chars"; # Search for a keyword on the same line my $from = $t->search(-regexp, "\\b\Q$All_Keys\E\\b", "$commen +t linestart" => "$comment lineend"); if($comment and !$from) { mark_word($t, $comment, "$comment lineend", 'Comment'); } } } foreach my $word (@Red_Keywords) { my $word_len = length $word; my $next = $start; while (my $from = $t->search(-regexp, "\\b\Q$word\E\\b", $next, $e +nd)) { $next = "$from + $word_len chars"; # Search for a comment character on the same line my $comment = $t->search( -regexp => $Comment, "$from linestart" => "$from lineend" ); # If comment found and is before keyword, skip formatting unless($comment and $t->compare($comment, '<', $from)) { mark_word($t, $from, $next, 'Red_Keyword'); } if($comment) { mark_word($t, $comment, "$comment lineend", 'Comment'); } } } foreach my $word (@Blue_Keywords) { my $word_len = length $word; my $next = $start; while (my $from = $t->search(-regexp, "\\b\Q$word\E\\b", $next, $e +nd)) { $next = "$from + $word_len chars"; # Search for a comment character on the same line my $comment = $t->search( -regexp => $Comment, "$from linestart" => "$from lineend" ); # If comment found and is before keyword, skip formatting unless($comment and $t->compare($comment, '<', $from)) { mark_word($t, $from, $next, 'Blue_Keyword'); } if($comment) { mark_word($t, $comment, "$comment lineend", 'Comment'); } } } } sub mark_word { my $text = shift; my $start = shift; my $end = shift; my $style = shift; return unless exists $Highlights{$style}; foreach my $tag (@{$Highlights{$style}}) { $text->tagAdd($tag, $start, $end); } }
Thanx again for the great input!