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

#!/opt/bin/perl

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;
}

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->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);

   $schnauzer->set_geometry_hints;
}

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

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

=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:	1.25
Committed:	Wed Nov 12 19:36:06 2003 UTC (20 years, 8 months ago) by root
Branch:	MAIN
Changes since 1.24:	+6 -0 lines
Log Message:	* empty log message *
#	User	Rev	Content
1	root	1.1	#!/opt/bin/perl
2
3	root	1.12	use Gtk2 -init;
4			use Gtk2::Gdk::Keysyms;
5
6			use Gtk2::CV::ImageWindow;
7			use Gtk2::CV::Schnauzer;
8
9	root	1.16	use Gtk2::CV;
10
11			Gtk2::Rc->parse (Gtk2::CV::find_rcfile "gtkrc");
12
13	root	1.20	use File::Spec;
14
15			my $mainwin;
16	root	1.12	my $viewer;
17			my $schnauzer;
18	root	1.20	my $info;
19	root	1.21	my $help;
20	root	1.12
21	root	1.25	my $schnauzer_idx = 0;
22
23	root	1.12	sub new_schnauzer {
24	root	1.20	my $s = new Gtk2::CV::Schnauzer;
25	root	1.12
26			$s->signal_connect_after (key_press_event => \&std_keys);
27	root	1.20	$s->signal_connect (activate => sub {
28			my $label = sprintf "%s (%d)",
29			(File::Spec->splitpath ($_[1]))[2],
30			-s $_[1];
31			$info->set_label ($label);
32			$viewer->load_image ($_[1]);
33			});
34	root	1.12
35			$s;
36			}
37
38			sub std_keys {
39			my $key = $_[1]->keyval;
40			my $state = $_[1]->state;
41
42	root	1.21	my $ctrl = $state * "control-mask";
43	root	1.12
44			if ($key == $Gtk2::Gdk::Keysyms{q}) {
45			main_quit Gtk2;
46			} elsif ($ctrl && $key == $Gtk2::Gdk::Keysyms{v}) {
47	root	1.20	my $w = new Gtk2::Window;
48			$w->add (my $s = new_schnauzer);
49			$s->set_dir (File::Spec->curdir);
50	root	1.25	$s->set_geometry_hints;
51	root	1.21	$w->show_all;
52	root	1.25
53	root	1.21	} elsif ($ctrl && $key == $Gtk2::Gdk::Keysyms{h}) {
54			unless ($help) {
55			require Gtk2::PodViewer;
56
57			$help = new Gtk2::Window;
58			$help->set_title ("CV Help");
59			$help->set_default_size (500, 300);
60			$help->signal_connect (delete_event => sub { $help->hide; 1 });
61
62			$help->add (my $sw = new Gtk2::ScrolledWindow);
63			$sw->add (my $h = new Gtk2::PodViewer);
64
65			#binmode DATA, ":utf8";
66			$h->load_string (do { local $/; <DATA> });
67			}
68
69			$help->show_all;
70	root	1.12	} else {
71	root	1.19	#$mainwin->show_all;
72	root	1.12	$schnauzer->handle_key ($key, $state);
73			}
74
75			1;
76			}
77
78	root	1.20	{
79			$viewer = new Gtk2::CV::ImageWindow;
80	root	1.15
81	root	1.20	$viewer->set_title ("CV: Image");
82	root	1.15
83	root	1.20	$viewer->signal_connect (key_press_event => \&std_keys);
84			$viewer->signal_connect (delete_event => sub { main_quit Gtk2 });
85	root	1.13
86	root	1.20	$viewer->signal_connect (button3_press_event => sub {
87			$mainwin->visible
88			? $mainwin->hide
89			: $mainwin->show_all;
90	root	1.23	1;
91	root	1.20	});
92
93			$schnauzer = new_schnauzer;
94
95			$mainwin = new Gtk2::Window;
96			$mainwin->set_title ("CV");
97			$mainwin->add (my $vbox = new Gtk2::VBox);
98	root	1.23	$mainwin->signal_connect (delete_event => sub { $mainwin->hide; 1; });
99	root	1.20
100			$vbox->add ($schnauzer);
101	root	1.22	$vbox->pack_end (my $frame = new Gtk2::Frame, 0, 0, 0);
102	root	1.20	$frame->add (my $hbox = new Gtk2::HBox 0, 0);
103			$hbox->pack_start ((new Gtk2::Label "Info"), 0, 0, 0);
104			$hbox->pack_start (($info = new Gtk2::Label), 1, 1, 0);
105	root	1.25
106			$schnauzer->set_geometry_hints;
107	root	1.20	}
108	root	1.12
109			if (@ARGV) {
110	root	1.18	$schnauzer->set_paths (\@ARGV);
111			$schnauzer->handle_key ($Gtk2::Gdk::Keysyms{space}, []);
112	root	1.17	} else {
113	root	1.20	$schnauzer->set_dir (File::Spec->curdir);
114	root	1.19	$mainwin->show_all;
115	root	1.12	}
116
117			$viewer->show_all;
118
119			main Gtk2;
120	root	1.21
121			__DATA__
122	root	1.12
123	root	1.11	=head1 NAME
124
125			cv - a fast gtk+ image viewer modeled after xv
126
127			=head1 SYNOPSIS
128
129			cv [file...]
130
131			=head1 DESCRIPTION
132
133			None yet.
134
135			=head2 THE IMAGE WINDOW
136
137			You can use the following keys in the image window:
138
139			q quit the program
140			< half the image size
141			> double the image size
142			, shrink the image by 10%
143			. enlarge the image by 10%
144			n reset to normal size
145			m maximize to screensize
146			M maxime to screensize, respecting image aspect
147			u uncrop
148			r set scaling mode to 'nearest' (fastest)
149			s set scaling mode to 'bilinear' (default)
150			S set scaling mode to 'hyper' (slowest)
151			t rotate clockwise 90°
152			T rotate counterclockwise°
153			ctrl-v open a new visual schnauzer window for the current dir
154
155			The following keys are redirected to the default visual schnauzer window:
156
157			space next image
158			backspace last image
159
160			=head2 THE VISUAL SCHNAUZER
161
162			You can use the following keys in the schnauzer window:
163
164			space move to and display next image
165			backspace move to and display previous image
166			return display selected picture
167
168			cursor keys move selection
169			page-up move one page up
170			page-down move one page down
171			home move to first file
172			end move to last file
173
174	root	1.24	ctrl-d delete selected files WITHOUT ASKING AGAIN
175	root	1.11	ctrl-g generate icons for the selected files
176	root	1.24	ctrl-u update selected (or all) icons if neccessary
177	root	1.11
178	root	1.23	=head1 SECURITY CONSIDERATIONS
179
180			CV uses Pixbuf to load images. Pixbuf is not considered safe for this
181			purpose, though (from the gtk-2.2 release notes):
182
183			"While efforts have been made to make gdk-pixbuf robust against invalid
184			images, using gdk-pixbuf to load untrusted data is not recommended, due to
185			the likelyhood that there are additional problems where an invalid image
186			could cause gdk-pixbuf to crash or worse."
187
188	root	1.11	=head1 BUGS/TODO
189	root	1.23
190			Pixbuf doesn't honor G_BROKEN_FILENAMES, so accessing files with names
191			incompatible with utf-8 fails.
192	root	1.11
193			rotate on disk
194			print
195			lots of ui issues
196			save(?)
197			preferences
198	root	1.12	ctrl-u in schnauzer
199			shift-cursor in schnauzer
200	root	1.11
201			=head1 AUTHOR
202
203			Marc Lehmann <cv@plan9.de>.
204
205			=cut
206	root	1.1