kgsueme/kgsueme/chat.pl

use utf8;

package chat;

# waaay cool widget. well... maybe at one point in the future

use Gtk2;
use Gtk2::Pango;

use Glib::Object::Subclass
   Gtk2::VBox,
   signals => {
      command => {
         flags         => [qw/run-first/],
         return_type   => undef,
         param_types   => [Glib::Scalar, Glib::Scalar],
         class_closure => sub { },
      },
      tag_event => {
         flags         => [qw/run-first/],
         return_type   => undef,
                          # tag, event, content
         param_types   => [Glib::String, Gtk2::Gdk::Event, Glib::String],
         class_closure => sub { },
      },
      enter_tag => {
         flags         => [qw/run-first/],
         return_type   => undef,
                          # tag, content
         param_types   => [Glib::String, Glib::String],
         class_closure => sub { },
      },
      leave_tag => {
         flags         => [qw/run-first/],
         return_type   => undef,
                          # tag
         param_types   => [Glib::String, Glib::String],
         class_closure => sub { },
      },
   };

sub INIT_INSTANCE {
   my $self = shift;

   my $tagtable = new Gtk2::TextTagTable;

   {
      my @tags = (
         [default     => { foreground => "black", wrap_mode => "word-char" }],
         [node        => { foreground => "#0000b0", event => 1 }],
         [move        => { foreground => "#0000b0", event => 1 }],
         [user        => { foreground => "#0000b0", event => 1 }],
         [coord       => { foreground => "#0000b0", event => 1 }],
         [score       => { foreground => "#0000b0", event => 1 }],
         [error       => { foreground => "#ff0000", event => 1 }],
         [leader      => { weight => 800, pixels_above_lines => 6 }],
         [header      => { weight => 800, pixels_above_lines => 6 }],
         [undo        => { foreground => "#ffff00", background => "#ff0000", weight => 800, pixels_above_lines => 6 }],
         [challenge   => { weight => 800, pixels_above_lines => 6, background => "#ffffb0" }],
         [description => { weight => 800, foreground => "blue" }],
         [infoblock   => { weight => 700, foreground => "blue" }],
      );

      for (@tags) {
         my ($k, $v) = @$_;
         my $tag = new Gtk2::TextTag $k;
         if (delete $v->{event}) {
            $tag->signal_connect (event => sub {
               my ($tag, $view, $event, $iter) = @_;
               my ($a, $b) = ($iter, $iter->copy);
               $a->backward_to_tag_toggle ($tag) unless $a->begins_tag ($tag);
               $b->forward_to_tag_toggle  ($tag) unless $b->ends_tag   ($tag);

               $self->signal_emit (tag_event => $k, $event, $a->get_text ($b));
            });
         }
         $tag->set (%$v);
         $tagtable->add ($tag);
      }
   }

   $self->{tagtable} = $tagtable;

   $self->signal_connect (destroy => sub {
      remove Glib::Source delete $self->{idle} if $self->{idle};
      %{$_[0]} = ();
   });

   $self->{buffer} = new Gtk2::TextBuffer $self->{tagtable};

   $self->{widget} = new Gtk2::ScrolledWindow;
   $self->{widget}->set_policy ("automatic", "always");
   $self->pack_start ($self->{widget}, 1, 1, 0);

   $self->{widget}->add ($self->{view} = new_with_buffer Gtk2::TextView $self->{buffer});
   $self->{view}->set (
         wrap_mode      => "word-char",
         cursor_visible => 0,
         editable       => 0,
         tabs           =>
            (new Gtk2::Pango::TabArray 1, 0, left => 125000), # arbitrary... pango is underfeatured
   );

   $self->{view}->signal_connect (motion_notify_event => sub {
      my ($widget, $event) = @_;

      my $window = $widget->get_window ("text");
      if ($event->window == $window) {
         my ($win, $x, $y, $mask) = $window->get_pointer;
         ($x, $y) = $self->{view}->window_to_buffer_coords ("text", $x, $y);
         my ($iter) = $self->{view}->get_iter_at_location ($x, $y);

         my $tag = ($iter->get_tags)[01];
         
         if ($tag) {
            my ($a, $b) = ($iter, $iter->copy);
            $a->backward_to_tag_toggle ($tag) unless $a->begins_tag ($tag);
            $b->forward_to_tag_toggle  ($tag) unless $b->ends_tag   ($tag);

            $self->tag_enterleave ($tag->get ("name"), $a->get_text ($b));
         } else {
            $self->tag_enterleave ();
         }

         1;
      }
      0;
   });

   $self->{view}->signal_connect (leave_notify_event => sub {
      $self->tag_enterleave ();
      0;
   });

   $self->{view}->add_events (qw(leave_notify_mask));

   $self->pack_start (($self->{entry} = new Gtk2::Entry), 0, 1, 0);

   $self->{entry}->signal_connect (activate => sub {
      my ($entry) = @_;
      my $text = $entry->get_text;
      $entry->set_text("");

      my ($cmd, $arg);

      if ($text =~ /^\/(\S+)\s*(.*)$/) {
         ($cmd, $arg) = ($1, $2);
      } else {
         ($cmd, $arg) = ("say", $text);
      }

      $self->signal_emit (command => $cmd, $arg);
   });

   #$self->{end} = $self->{buffer}->create_mark (undef, $self->{buffer}->get_end_iter, 0);#d##todo# use this one for gtk-1.050+
   $self->{end} = $self->{buffer}->create_mark (++$USELESSNAME, $self->{buffer}->get_end_iter, 0); # workaround for gtk-perl bug

   $self->set_end;
}

sub tag_enterleave {
   my ($self, $tag, $content) = @_;

   my $cur = $self->{current_tag};

   if ($cur->[0] != $tag || $cur->[1] ne $content) {
      $self->signal_emit (leave_tag => @$cur) if $cur->[0];
      $self->{current_tag} = $cur = [$tag, $content];
      $self->signal_emit (enter_tag => @$cur) if $cur->[0];
   }
}

sub set_end {
   my ($self) = @_;

   # this is probably also a hack...
   $self->{idle} ||= add Glib::Idle sub {
      $self->{view}->scroll_to_iter ($self->{buffer}->get_end_iter, 0, 0, 0, 0)
         if $self->{view};
      delete $self->{idle};
   };
}

sub at_end {
   my ($self) = @_;

   # this is, maybe, a bad hack :/
   my $adj = $self->{widget}->get_vadjustment;
   $adj->value + $adj->page_size >= $adj->upper - 0.5;
}

sub append_text {
   my ($self, $text) = @_;

   $self->_append_text ($self->{end}, $text);
}

sub _append_text {
   my ($self, $mark, $text) = @_;

   my $at_end = $self->at_end;

   $text = "<default>$text</default>";

   my @tag;
   # pseudo-simplistic-xml-parser
   for (;;) {
      $text =~ /\G<([^>]+)>/gc or last;
      my $tag = $1;
      if ($tag =~ s/^\///) {
         pop @tag;
      } else {
         push @tag, $tag;
      }

      $text =~ /\G([^<]*)/gc or last;
      $self->{buffer}->insert_with_tags_by_name ($self->{buffer}->get_iter_at_mark ($mark), util::xmlto $1, @tag)
         if length $1;
   }

   $self->set_end if $at_end;
}

sub set_text {
   my ($self, $text) = @_;

   my $at_end = $self->at_end;
           
   $self->{buffer}->set_text ("");
   $self->append_text ($text);

   $self->set_end if $at_end;
}

sub new_eventtag {
   my ($self, $cb) = @_;

   my $tag = new Gtk2::TextTag;
   $tag->signal_connect (event => $cb);
   $self->{tagtable}->add ($tag);

   $tag
}

# create a new "subbuffer"
sub new_inlay {
   my ($self) = @_;

   my $end = $self->{buffer}->get_end_iter;

   my $self = bless {
      buffer  => $self->{buffer},
      parent  => $self,
   }, superchat::inlay;

   # $USELESSNAME is a Gtk-perl < 1.042 workaround
   $self->{l} = $self->{buffer}->create_mark (++$USELESSNAME, $end, 1);
   $self->{buffer}->insert ($end, "\x{200d}");
   $self->{r} = $self->{buffer}->create_mark (++$USELESSNAME, $self->{buffer}->get_iter_at_mark ($self->{l}), 0);

   Scalar::Util::weaken $self->{buffer};
   Scalar::Util::weaken $self->{parent};
   $self;
}

sub new_switchable_inlay {
   my ($self, $header, $cb, $visible) = @_;

   my $inlay;

   my $tag = $self->new_eventtag (sub {
      my ($tag, $view, $event, $iter) = @_;

      if ($event->type eq "button-press") {
         $inlay->set_visible (!$inlay->{visible});
         return 1;
      }

      0;
   });

   $tag->set (background => "#e0e0ff");

   $inlay = $self->new_inlay;

   $inlay->{visible} = $visible;
   $inlay->{header}  = $header;
   $inlay->{tag}     = $tag;
   $inlay->{cb}      = $cb;

   Scalar::Util::weaken $inlay->{tag};

   $inlay->refresh;

   $inlay;
}

package superchat::inlay;

sub liter { $_[0]{buffer}->get_iter_at_mark ($_[0]{l}) }
sub riter { $_[0]{buffer}->get_iter_at_mark ($_[0]{r}) }

sub clear {
   my ($self) = @_;
   $self->{buffer}->delete ($self->liter, $self->riter);
}

sub append_text {
   my ($self, $text) = @_;

   $self->{parent}->_append_text ($self->{r}, $text);
}

sub append_widget {
   my ($self, $widget) = @_;

   $widget->show_all;

   my $anchor = $self->{buffer}->create_child_anchor ($self->riter);
   $self->{parent}{view}->add_child_at_anchor ($widget, $anchor);

   $widget;
}

sub append_optionmenu {
   my ($self, $ref, @entry) = @_;

   $self->append_widget (gtk::optionmenu $ref, @entry);
}

sub append_button {
   my ($self, $label, $cb) = @_;

   $self->append_widget (gtk::button $label, $cb);
}

sub visible { $_[0]{visible} }

sub set_visible {
   my ($self, $visible) = @_;

   return if $self->{visible} == $visible;
   $self->{visible} = $visible;

   $self->refresh;
}

sub refresh {
   my ($self) = @_;

   $self->clear;

   my $arrow = $self->{visible} ? "⊟" : "⊞";

   $self->{buffer}->insert ($self->riter, "\n");
   $self->{buffer}->insert_with_tags ($self->riter, util::xmlto "$arrow $self->{header}", $self->{tag});

   return unless $self->{visible};

   $self->{cb}->($self);
}

sub destroy {
   my ($self) = @_;

   return if !$self->{l} || !$self->{buffer} || $self->{l}->get_deleted;

   $self->clear if $self->{buffer};

   delete $self->{parent};
   delete $self->{buffer};
   delete $self->{l};
   delete $self->{r};
}

sub DESTROY {
   my $self = shift;

   $self->{parent}{tagtable}->remove (delete $self->{tag}) if $self->{tag} && $self->{parent};
   #&destroy;
}

1;

Revision:	1.12
Committed:	Tue Jun 8 17:35:00 2004 UTC (19 years, 11 months ago) by root
Content type:	text/plain
Branch:	MAIN
Changes since 1.11:	+75 -26 lines
Log Message:	* empty log message *
#	User	Rev	Content
1	root	1.4	use utf8;
2
3	pcg	1.1	package chat;
4
5	root	1.4	# waaay cool widget. well... maybe at one point in the future
6
7	pcg	1.1	use Gtk2;
8	root	1.12	use Gtk2::Pango;
9	pcg	1.1
10			use Glib::Object::Subclass
11			Gtk2::VBox,
12			signals => {
13			command => {
14	root	1.12	flags => [qw/run-first/],
15			return_type => undef,
16			param_types => [Glib::Scalar, Glib::Scalar],
17			class_closure => sub { },
18			},
19			tag_event => {
20			flags => [qw/run-first/],
21			return_type => undef,
22			# tag, event, content
23			param_types => [Glib::String, Gtk2::Gdk::Event, Glib::String],
24			class_closure => sub { },
25			},
26			enter_tag => {
27			flags => [qw/run-first/],
28			return_type => undef,
29			# tag, content
30			param_types => [Glib::String, Glib::String],
31			class_closure => sub { },
32			},
33			leave_tag => {
34			flags => [qw/run-first/],
35			return_type => undef,
36			# tag
37			param_types => [Glib::String, Glib::String],
38			class_closure => sub { },
39	pcg	1.1	},
40			};
41
42	root	1.4	sub INIT_INSTANCE {
43			my $self = shift;
44	pcg	1.1
45	root	1.4	my $tagtable = new Gtk2::TextTagTable;
46
47			{
48			my @tags = (
49	root	1.12	[default => { foreground => "black", wrap_mode => "word-char" }],
50	root	1.4	[node => { foreground => "#0000b0", event => 1 }],
51			[move => { foreground => "#0000b0", event => 1 }],
52	root	1.11	[user => { foreground => "#0000b0", event => 1 }],
53	root	1.4	[coord => { foreground => "#0000b0", event => 1 }],
54			[score => { foreground => "#0000b0", event => 1 }],
55			[error => { foreground => "#ff0000", event => 1 }],
56	root	1.9	[leader => { weight => 800, pixels_above_lines => 6 }],
57	root	1.4	[header => { weight => 800, pixels_above_lines => 6 }],
58			[undo => { foreground => "#ffff00", background => "#ff0000", weight => 800, pixels_above_lines => 6 }],
59			[challenge => { weight => 800, pixels_above_lines => 6, background => "#ffffb0" }],
60			[description => { weight => 800, foreground => "blue" }],
61			[infoblock => { weight => 700, foreground => "blue" }],
62			);
63
64			for (@tags) {
65			my ($k, $v) = @$_;
66			my $tag = new Gtk2::TextTag $k;
67			if (delete $v->{event}) {
68	root	1.12	$tag->signal_connect (event => sub {
69			my ($tag, $view, $event, $iter) = @_;
70			my ($a, $b) = ($iter, $iter->copy);
71			$a->backward_to_tag_toggle ($tag) unless $a->begins_tag ($tag);
72			$b->forward_to_tag_toggle ($tag) unless $b->ends_tag ($tag);
73
74			$self->signal_emit (tag_event => $k, $event, $a->get_text ($b));
75			});
76	root	1.4	}
77			$tag->set (%$v);
78			$tagtable->add ($tag);
79	pcg	1.1	}
80			}
81
82	root	1.4	$self->{tagtable} = $tagtable;
83	pcg	1.1
84	pcg	1.3	$self->signal_connect (destroy => sub {
85			remove Glib::Source delete $self->{idle} if $self->{idle};
86			%{$_[0]} = ();
87			});
88
89	root	1.4	$self->{buffer} = new Gtk2::TextBuffer $self->{tagtable};
90	pcg	1.1
91			$self->{widget} = new Gtk2::ScrolledWindow;
92	root	1.11	$self->{widget}->set_policy ("automatic", "always");
93	pcg	1.1	$self->pack_start ($self->{widget}, 1, 1, 0);
94
95			$self->{widget}->add ($self->{view} = new_with_buffer Gtk2::TextView $self->{buffer});
96	root	1.12	$self->{view}->set (
97			wrap_mode => "word-char",
98			cursor_visible => 0,
99			editable => 0,
100			tabs =>
101			(new Gtk2::Pango::TabArray 1, 0, left => 125000), # arbitrary... pango is underfeatured
102			);
103	pcg	1.1
104			$self->{view}->signal_connect (motion_notify_event => sub {
105			my ($widget, $event) = @_;
106
107			my $window = $widget->get_window ("text");
108			if ($event->window == $window) {
109			my ($win, $x, $y, $mask) = $window->get_pointer;
110	root	1.12	($x, $y) = $self->{view}->window_to_buffer_coords ("text", $x, $y);
111			my ($iter) = $self->{view}->get_iter_at_location ($x, $y);
112
113			my $tag = ($iter->get_tags)[01];
114
115			if ($tag) {
116			my ($a, $b) = ($iter, $iter->copy);
117			$a->backward_to_tag_toggle ($tag) unless $a->begins_tag ($tag);
118			$b->forward_to_tag_toggle ($tag) unless $b->ends_tag ($tag);
119
120			$self->tag_enterleave ($tag->get ("name"), $a->get_text ($b));
121			} else {
122			$self->tag_enterleave ();
123			}
124
125			1;
126	pcg	1.1	}
127			0;
128			});
129
130	root	1.12	$self->{view}->signal_connect (leave_notify_event => sub {
131			$self->tag_enterleave ();
132			0;
133			});
134
135			$self->{view}->add_events (qw(leave_notify_mask));
136
137	pcg	1.1	$self->pack_start (($self->{entry} = new Gtk2::Entry), 0, 1, 0);
138
139	root	1.4	$self->{entry}->signal_connect (activate => sub {
140	pcg	1.1	my ($entry) = @_;
141			my $text = $entry->get_text;
142			$entry->set_text("");
143
144			my ($cmd, $arg);
145
146			if ($text =~ /^\/(\S+)\s(.)$/) {
147			($cmd, $arg) = ($1, $2);
148			} else {
149	pcg	1.2	($cmd, $arg) = ("say", $text);
150	pcg	1.1	}
151
152			$self->signal_emit (command => $cmd, $arg);
153			});
154
155	root	1.4	#$self->{end} = $self->{buffer}->create_mark (undef, $self->{buffer}->get_end_iter, 0);#d##todo# use this one for gtk-1.050+
156			$self->{end} = $self->{buffer}->create_mark (++$USELESSNAME, $self->{buffer}->get_end_iter, 0); # workaround for gtk-perl bug
157	pcg	1.1
158			$self->set_end;
159			}
160
161	root	1.12	sub tag_enterleave {
162			my ($self, $tag, $content) = @_;
163
164			my $cur = $self->{current_tag};
165
166			if ($cur->[0] != $tag \|\| $cur->[1] ne $content) {
167			$self->signal_emit (leave_tag => @$cur) if $cur->[0];
168			$self->{current_tag} = $cur = [$tag, $content];
169			$self->signal_emit (enter_tag => @$cur) if $cur->[0];
170			}
171	pcg	1.1	}
172
173			sub set_end {
174			my ($self) = @_;
175
176			# this is probably also a hack...
177			$self->{idle} \|\|= add Glib::Idle sub {
178			$self->{view}->scroll_to_iter ($self->{buffer}->get_end_iter, 0, 0, 0, 0)
179			if $self->{view};
180			delete $self->{idle};
181			};
182			}
183
184			sub at_end {
185			my ($self) = @_;
186
187			# this is, maybe, a bad hack :/
188			my $adj = $self->{widget}->get_vadjustment;
189			$adj->value + $adj->page_size >= $adj->upper - 0.5;
190			}
191
192			sub append_text {
193			my ($self, $text) = @_;
194
195	root	1.4	$self->_append_text ($self->{end}, $text);
196			}
197
198			sub _append_text {
199			my ($self, $mark, $text) = @_;
200
201	pcg	1.1	my $at_end = $self->at_end;
202
203			$text = "<default>$text</default>";
204
205	root	1.4	my @tag;
206	pcg	1.1	# pseudo-simplistic-xml-parser
207			for (;;) {
208			$text =~ /\G<([^>]+)>/gc or last;
209			my $tag = $1;
210			if ($tag =~ s/^\///) {
211			pop @tag;
212			} else {
213			push @tag, $tag;
214			}
215
216			$text =~ /\G([^<]*)/gc or last;
217	root	1.4	$self->{buffer}->insert_with_tags_by_name ($self->{buffer}->get_iter_at_mark ($mark), util::xmlto $1, @tag)
218	pcg	1.1	if length $1;
219			}
220
221			$self->set_end if $at_end;
222			}
223
224			sub set_text {
225			my ($self, $text) = @_;
226
227			my $at_end = $self->at_end;
228
229			$self->{buffer}->set_text ("");
230			$self->append_text ($text);
231
232			$self->set_end if $at_end;
233	root	1.4	}
234
235			sub new_eventtag {
236			my ($self, $cb) = @_;
237
238			my $tag = new Gtk2::TextTag;
239			$tag->signal_connect (event => $cb);
240			$self->{tagtable}->add ($tag);
241
242			$tag
243			}
244
245			# create a new "subbuffer"
246			sub new_inlay {
247			my ($self) = @_;
248
249			my $end = $self->{buffer}->get_end_iter;
250
251			my $self = bless {
252			buffer => $self->{buffer},
253			parent => $self,
254			}, superchat::inlay;
255
256			# $USELESSNAME is a Gtk-perl < 1.042 workaround
257			$self->{l} = $self->{buffer}->create_mark (++$USELESSNAME, $end, 1);
258			$self->{buffer}->insert ($end, "\x{200d}");
259			$self->{r} = $self->{buffer}->create_mark (++$USELESSNAME, $self->{buffer}->get_iter_at_mark ($self->{l}), 0);
260
261			Scalar::Util::weaken $self->{buffer};
262			Scalar::Util::weaken $self->{parent};
263			$self;
264			}
265
266			sub new_switchable_inlay {
267			my ($self, $header, $cb, $visible) = @_;
268
269			my $inlay;
270
271			my $tag = $self->new_eventtag (sub {
272			my ($tag, $view, $event, $iter) = @_;
273
274			if ($event->type eq "button-press") {
275			$inlay->set_visible (!$inlay->{visible});
276			return 1;
277			}
278
279			0;
280			});
281
282			$tag->set (background => "#e0e0ff");
283
284			$inlay = $self->new_inlay;
285
286			$inlay->{visible} = $visible;
287			$inlay->{header} = $header;
288			$inlay->{tag} = $tag;
289			$inlay->{cb} = $cb;
290
291			Scalar::Util::weaken $inlay->{tag};
292
293			$inlay->refresh;
294
295			$inlay;
296			}
297
298			package superchat::inlay;
299
300			sub liter { $_[0]{buffer}->get_iter_at_mark ($_[0]{l}) }
301			sub riter { $_[0]{buffer}->get_iter_at_mark ($_[0]{r}) }
302
303			sub clear {
304			my ($self) = @_;
305			$self->{buffer}->delete ($self->liter, $self->riter);
306			}
307
308			sub append_text {
309			my ($self, $text) = @_;
310
311			$self->{parent}->_append_text ($self->{r}, $text);
312			}
313
314			sub append_widget {
315			my ($self, $widget) = @_;
316
317			$widget->show_all;
318
319			my $anchor = $self->{buffer}->create_child_anchor ($self->riter);
320			$self->{parent}{view}->add_child_at_anchor ($widget, $anchor);
321	root	1.10
322			$widget;
323	root	1.4	}
324
325			sub append_optionmenu {
326			my ($self, $ref, @entry) = @_;
327
328	root	1.10	$self->append_widget (gtk::optionmenu $ref, @entry);
329	root	1.4	}
330
331			sub append_button {
332			my ($self, $label, $cb) = @_;
333
334	root	1.10	$self->append_widget (gtk::button $label, $cb);
335	root	1.4	}
336
337			sub visible { $_[0]{visible} }
338
339			sub set_visible {
340			my ($self, $visible) = @_;
341
342			return if $self->{visible} == $visible;
343			$self->{visible} = $visible;
344
345			$self->refresh;
346			}
347
348			sub refresh {
349			my ($self) = @_;
350
351			$self->clear;
352
353			my $arrow = $self->{visible} ? "⊟" : "⊞";
354
355			$self->{buffer}->insert ($self->riter, "\n");
356			$self->{buffer}->insert_with_tags ($self->riter, util::xmlto "$arrow $self->{header}", $self->{tag});
357
358			return unless $self->{visible};
359
360			$self->{cb}->($self);
361			}
362
363			sub destroy {
364			my ($self) = @_;
365
366			return if !$self->{l} \|\| !$self->{buffer} \|\| $self->{l}->get_deleted;
367
368			$self->clear if $self->{buffer};
369
370			delete $self->{parent};
371			delete $self->{buffer};
372			delete $self->{l};
373			delete $self->{r};
374			}
375
376			sub DESTROY {
377			my $self = shift;
378
379			$self->{parent}{tagtable}->remove (delete $self->{tag}) if $self->{tag} && $self->{parent};
380			#&destroy;
381	pcg	1.1	}
382
383			1;
384