[ViewVC] Annotation of: cvs/CV/bin/cv

#!/opt/bin/perl

use Cwd ();
use Encode ();

use Gtk2 -init;
use Gtk2::Gdk::Keysyms;

use Gtk2::CV::ImageWindow;
use Gtk2::CV::Schnauzer;

use Gtk2::CV;

Gtk2::Rc->parse (Gtk2::CV::find_rcfile "gtkrc");

use File::Spec;

my $mainwin;
my $viewer;
my $schnauzer;
my $info;
my $help;

my $schnauzer_idx = 0;

sub new_schnauzer {
   my $s = new Gtk2::CV::Schnauzer;

   $s->signal_connect_after (key_press_event => \&std_keys);
   $s->signal_connect (activate => sub {
      my $label = sprintf "%s (%d)",
                  (File::Spec->splitpath ($_[1]))[2],
                  -s $_[1];
      $info->set_label ($label);
      $viewer->load_image ($_[1]);
   });
   $s->signal_connect (chdir => sub {
      my ($self, $dir) = @_;

      my $path = Cwd::abs_path $dir;

      $self->realize;
      $self->window->property_change (
         Gtk2::Gdk::Atom->intern ("_X_CWD", 0),
         Gtk2::Gdk::Atom->intern ("UTF8_STRING", 0),
         Gtk2::Gdk::CHARS, 'replace',
         Encode::encode_utf8 $path,
      );
   });

   $s;
}

sub std_keys {
   my $key = $_[1]->keyval;
   my $state = $_[1]->state;

   my $ctrl = $state * "control-mask";

   if ($key == $Gtk2::Gdk::Keysyms{q}) {
      main_quit Gtk2;
   } elsif ($ctrl && $key == $Gtk2::Gdk::Keysyms{v}) {
      my $w = new Gtk2::Window;

      $w->set_title ("CV: Schnauzer");
      $w->add (my $s = new_schnauzer);
      $s->set_dir (File::Spec->curdir);
      $s->set_geometry_hints;
      $w->show_all;

   } elsif ($ctrl && $key == $Gtk2::Gdk::Keysyms{h}) {
      unless ($help) {
         require Gtk2::PodViewer;

         $help = new Gtk2::Window;
         $help->set_title ("CV: Help");
         $help->set_default_size (500, 300);
         $help->signal_connect (delete_event => sub { $help->hide; 1 });

         $help->add (my $sw = new Gtk2::ScrolledWindow);
         $sw->add (my $h = new Gtk2::PodViewer);

         #binmode DATA, ":utf8";
         $h->load_string (do { local $/; <DATA> });
      }

      $help->show_all;
   } else {
      #$mainwin->show_all;
      $schnauzer->handle_key ($key, $state);
   }

   1;
}

{
   $viewer = new Gtk2::CV::ImageWindow;

   $viewer->set_title ("CV: Image");

   $viewer->signal_connect (key_press_event => \&std_keys);
   $viewer->signal_connect (delete_event => sub { main_quit Gtk2 });

   $viewer->signal_connect (button3_press_event => sub {
      $mainwin->visible
         ? $mainwin->hide
         : $mainwin->show_all;
      1;
   });

   $schnauzer = new_schnauzer;

   $mainwin = new Gtk2::Window;
   $mainwin->set_title ("CV");
   $mainwin->add (my $vbox = new Gtk2::VBox);
   $mainwin->signal_connect (delete_event => sub { $mainwin->hide; 1; });

   $vbox->add ($schnauzer);
   $vbox->pack_end (my $frame = new Gtk2::Frame, 0, 0, 0);
   $frame->add (my $hbox = new Gtk2::HBox 0, 0);
   $hbox->pack_start ((new Gtk2::Label "Info"), 0, 0, 0);
   $hbox->pack_start (($info = new Gtk2::Label), 1, 1, 0);
   $info->set (wrap => 1);

   $schnauzer->set_geometry_hints;
}

if (@ARGV) {
   $schnauzer->set_paths ([map Glib::filename_to_unicode $_, @ARGV]);
   $schnauzer->show_all;
   $schnauzer->handle_key ($Gtk2::Gdk::Keysyms{space}, []);
} else {
   $schnauzer->set_dir (File::Spec->curdir);
   $mainwin->show_all;
   $viewer->show_all;
}

$viewer->show_all;

main Gtk2;

__DATA__

=head1 NAME

cv - a fast gtk+ image viewer modeled after xv

=head1 SYNOPSIS

   cv [file...]

=head1 DESCRIPTION

None yet.

=head2 THE IMAGE WINDOW

You can use the following keys in the image window:

 q       quit the program
 <       half the image size
 >       double the image size
 ,       shrink the image by 10%
 .       enlarge the image by 10%
 n       reset to normal size
 m       maximize to screensize
 M       maxime to screensize, respecting image aspect
 ctrl-m  toggle maxpect-always mode
 u       uncrop
 r       set scaling mode to 'nearest' (fastest)
 s       set scaling mode to 'bilinear' (default)
 S       set scaling mode to 'hyper' (slowest)
 t       rotate clockwise 90°
 T       rotate counterclockwise°
 ctrl-v  open a new visual schnauzer window for the current dir
 ctrl-s  rescan visual schnauzer files for updates/deletes etc.
 ctrl-e  run an editor ($CV_EDITOR or "gimp") on the current image.

And when playing movies, these additional keys are active:

 left    rewind by 10 seconds
 right   forward by 10 seconds
 down    rewind by 60 seconds
 up      forward by 60 seconds
 pg_up   rewind by 600 seconds
 pg_down forward by 600 seconds
 o       toggle on-screen display
 p       pause/unpause
 escape  stop playing
 9       turn volume down
 0       turn volume up

The following keys are redirected to the default visual schnauzer window:

 space     next image
 backspace last image

=head2 THE VISUAL SCHNAUZER

You can use the following keys in the schnauzer window:

 space       move to and display next image
 backspace   move to and display previous image
 return      display selected picture

 cursor keys move selection
 page-up     move one page up
 page-down   move one page down
 home        move to first file
 end         move to last file

 ctrl-d      delete selected files WITHOUT ASKING AGAIN
 ctrl-g      generate icons for the selected files
 ctrl-u      update selected (or all) icons if neccessary
 ctrl-a      select all files

=head1 ENVIRONMENT

=over 4

=item CV_EDITOR

The program that gets executed when the user presses C<CTRL-e> in the
Schnauzer or image window. The default is C<gimp>.

=item CV_PRINT_DESTINATION

The default (perl-style) destination to use in the print dialog.

=item CV_TRASHCAN

When set, must point to a directory where all files that are deleted are
moved to. If unset, files that are deleted are really being deleted.

=back

=head1 SECURITY CONSIDERATIONS

CV uses Pixbuf to load images. Pixbuf is not considered safe for this
purpose, though (from the gtk-2.2 release notes):

"While efforts have been made to make gdk-pixbuf robust against invalid
images, using gdk-pixbuf to load untrusted data is not recommended, due to
the likelyhood that there are additional problems where an invalid image
could cause gdk-pixbuf to crash or worse."

=head1 BUGS/TODO

 Pixbuf doesn't honor G_BROKEN_FILENAMES, so accessing files with names
 incompatible with utf-8 fails.

 rotate on disk
 print
 lots of ui issues
 save(?)
 preferences
 ctrl-u in schnauzer
 shift-cursor in schnauzer

=head1 AUTHOR

Marc Lehmann <cv@plan9.de>.

=cut

Revision:	1.39
Committed:	Sun May 1 05:53:40 2005 UTC (19 years, 2 months ago) by root
Branch:	MAIN
Changes since 1.38:	+1 -0 lines
Log Message:	* empty log message *
#	User	Rev	Content
1	root	1.1	#!/opt/bin/perl
2
3	root	1.37	use Cwd ();
4			use Encode ();
5
6	root	1.12	use Gtk2 -init;
7			use Gtk2::Gdk::Keysyms;
8
9			use Gtk2::CV::ImageWindow;
10			use Gtk2::CV::Schnauzer;
11
12	root	1.16	use Gtk2::CV;
13
14			Gtk2::Rc->parse (Gtk2::CV::find_rcfile "gtkrc");
15
16	root	1.20	use File::Spec;
17
18			my $mainwin;
19	root	1.12	my $viewer;
20			my $schnauzer;
21	root	1.20	my $info;
22	root	1.21	my $help;
23	root	1.12
24	root	1.25	my $schnauzer_idx = 0;
25
26	root	1.12	sub new_schnauzer {
27	root	1.20	my $s = new Gtk2::CV::Schnauzer;
28	root	1.12
29			$s->signal_connect_after (key_press_event => \&std_keys);
30	root	1.20	$s->signal_connect (activate => sub {
31			my $label = sprintf "%s (%d)",
32			(File::Spec->splitpath ($_[1]))[2],
33			-s $_[1];
34			$info->set_label ($label);
35			$viewer->load_image ($_[1]);
36			});
37	root	1.37	$s->signal_connect (chdir => sub {
38			my ($self, $dir) = @_;
39
40			my $path = Cwd::abs_path $dir;
41
42			$self->realize;
43			$self->window->property_change (
44			Gtk2::Gdk::Atom->intern ("_X_CWD", 0),
45			Gtk2::Gdk::Atom->intern ("UTF8_STRING", 0),
46			Gtk2::Gdk::CHARS, 'replace',
47			Encode::encode_utf8 $path,
48			);
49			});
50	root	1.12
51			$s;
52			}
53
54			sub std_keys {
55			my $key = $_[1]->keyval;
56			my $state = $_[1]->state;
57
58	root	1.21	my $ctrl = $state * "control-mask";
59	root	1.12
60			if ($key == $Gtk2::Gdk::Keysyms{q}) {
61			main_quit Gtk2;
62			} elsif ($ctrl && $key == $Gtk2::Gdk::Keysyms{v}) {
63	root	1.20	my $w = new Gtk2::Window;
64	root	1.26
65			$w->set_title ("CV: Schnauzer");
66	root	1.20	$w->add (my $s = new_schnauzer);
67			$s->set_dir (File::Spec->curdir);
68	root	1.25	$s->set_geometry_hints;
69	root	1.21	$w->show_all;
70	root	1.25
71	root	1.21	} elsif ($ctrl && $key == $Gtk2::Gdk::Keysyms{h}) {
72			unless ($help) {
73			require Gtk2::PodViewer;
74
75			$help = new Gtk2::Window;
76	root	1.26	$help->set_title ("CV: Help");
77	root	1.21	$help->set_default_size (500, 300);
78			$help->signal_connect (delete_event => sub { $help->hide; 1 });
79
80			$help->add (my $sw = new Gtk2::ScrolledWindow);
81			$sw->add (my $h = new Gtk2::PodViewer);
82
83			#binmode DATA, ":utf8";
84			$h->load_string (do { local $/; <DATA> });
85			}
86
87			$help->show_all;
88	root	1.12	} else {
89	root	1.19	#$mainwin->show_all;
90	root	1.12	$schnauzer->handle_key ($key, $state);
91			}
92
93			1;
94			}
95
96	root	1.20	{
97			$viewer = new Gtk2::CV::ImageWindow;
98	root	1.15
99	root	1.20	$viewer->set_title ("CV: Image");
100	root	1.15
101	root	1.20	$viewer->signal_connect (key_press_event => \&std_keys);
102			$viewer->signal_connect (delete_event => sub { main_quit Gtk2 });
103	root	1.13
104	root	1.20	$viewer->signal_connect (button3_press_event => sub {
105			$mainwin->visible
106			? $mainwin->hide
107			: $mainwin->show_all;
108	root	1.23	1;
109	root	1.20	});
110
111			$schnauzer = new_schnauzer;
112
113			$mainwin = new Gtk2::Window;
114			$mainwin->set_title ("CV");
115			$mainwin->add (my $vbox = new Gtk2::VBox);
116	root	1.23	$mainwin->signal_connect (delete_event => sub { $mainwin->hide; 1; });
117	root	1.20
118			$vbox->add ($schnauzer);
119	root	1.22	$vbox->pack_end (my $frame = new Gtk2::Frame, 0, 0, 0);
120	root	1.20	$frame->add (my $hbox = new Gtk2::HBox 0, 0);
121			$hbox->pack_start ((new Gtk2::Label "Info"), 0, 0, 0);
122			$hbox->pack_start (($info = new Gtk2::Label), 1, 1, 0);
123	root	1.39	$info->set (wrap => 1);
124	root	1.25
125			$schnauzer->set_geometry_hints;
126	root	1.20	}
127	root	1.12
128			if (@ARGV) {
129	root	1.36	$schnauzer->set_paths ([map Glib::filename_to_unicode $_, @ARGV]);
130	root	1.31	$schnauzer->show_all;
131	root	1.18	$schnauzer->handle_key ($Gtk2::Gdk::Keysyms{space}, []);
132	root	1.17	} else {
133	root	1.20	$schnauzer->set_dir (File::Spec->curdir);
134	root	1.19	$mainwin->show_all;
135	root	1.34	$viewer->show_all;
136	root	1.12	}
137
138	root	1.35	$viewer->show_all;
139
140	root	1.12	main Gtk2;
141	root	1.21
142			__DATA__
143	root	1.12
144	root	1.11	=head1 NAME
145
146			cv - a fast gtk+ image viewer modeled after xv
147
148			=head1 SYNOPSIS
149
150			cv [file...]
151
152			=head1 DESCRIPTION
153
154			None yet.
155
156			=head2 THE IMAGE WINDOW
157
158			You can use the following keys in the image window:
159
160			q quit the program
161			< half the image size
162			> double the image size
163			, shrink the image by 10%
164			. enlarge the image by 10%
165			n reset to normal size
166			m maximize to screensize
167			M maxime to screensize, respecting image aspect
168	root	1.26	ctrl-m toggle maxpect-always mode
169	root	1.11	u uncrop
170			r set scaling mode to 'nearest' (fastest)
171			s set scaling mode to 'bilinear' (default)
172			S set scaling mode to 'hyper' (slowest)
173			t rotate clockwise 90°
174			T rotate counterclockwise°
175			ctrl-v open a new visual schnauzer window for the current dir
176	root	1.28	ctrl-s rescan visual schnauzer files for updates/deletes etc.
177	root	1.31	ctrl-e run an editor ($CV_EDITOR or "gimp") on the current image.
178	root	1.11
179	root	1.33	And when playing movies, these additional keys are active:
180
181			left rewind by 10 seconds
182			right forward by 10 seconds
183			down rewind by 60 seconds
184			up forward by 60 seconds
185			pg_up rewind by 600 seconds
186			pg_down forward by 600 seconds
187			o toggle on-screen display
188			p pause/unpause
189			escape stop playing
190			9 turn volume down
191			0 turn volume up
192
193	root	1.11	The following keys are redirected to the default visual schnauzer window:
194
195			space next image
196			backspace last image
197
198			=head2 THE VISUAL SCHNAUZER
199
200			You can use the following keys in the schnauzer window:
201
202			space move to and display next image
203			backspace move to and display previous image
204			return display selected picture
205
206			cursor keys move selection
207			page-up move one page up
208			page-down move one page down
209			home move to first file
210			end move to last file
211
212	root	1.24	ctrl-d delete selected files WITHOUT ASKING AGAIN
213	root	1.11	ctrl-g generate icons for the selected files
214	root	1.24	ctrl-u update selected (or all) icons if neccessary
215	root	1.32	ctrl-a select all files
216	root	1.11
217	root	1.27	=head1 ENVIRONMENT
218
219			=over 4
220
221	root	1.38	=item CV_EDITOR
222
223			The program that gets executed when the user presses C<CTRL-e> in the
224			Schnauzer or image window. The default is C<gimp>.
225
226	root	1.27	=item CV_PRINT_DESTINATION
227
228			The default (perl-style) destination to use in the print dialog.
229
230	root	1.38	=item CV_TRASHCAN
231
232			When set, must point to a directory where all files that are deleted are
233			moved to. If unset, files that are deleted are really being deleted.
234
235	root	1.27	=back
236
237	root	1.23	=head1 SECURITY CONSIDERATIONS
238
239			CV uses Pixbuf to load images. Pixbuf is not considered safe for this
240			purpose, though (from the gtk-2.2 release notes):
241
242			"While efforts have been made to make gdk-pixbuf robust against invalid
243			images, using gdk-pixbuf to load untrusted data is not recommended, due to
244			the likelyhood that there are additional problems where an invalid image
245			could cause gdk-pixbuf to crash or worse."
246
247	root	1.11	=head1 BUGS/TODO
248	root	1.23
249			Pixbuf doesn't honor G_BROKEN_FILENAMES, so accessing files with names
250			incompatible with utf-8 fails.
251	root	1.11
252			rotate on disk
253			print
254			lots of ui issues
255			save(?)
256			preferences
257	root	1.12	ctrl-u in schnauzer
258			shift-cursor in schnauzer
259	root	1.11
260			=head1 AUTHOR
261
262			Marc Lehmann <cv@plan9.de>.
263
264			=cut
265	root	1.1