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Comparing CV/bin/cv (file contents):
Revision 1.29 by root, Fri Nov 14 00:38:43 2003 UTC vs.
Revision 1.54 by root, Fri Aug 19 00:19:52 2005 UTC

1#!/opt/bin/perl 1#!/opt/bin/perl
2
3use Cwd ();
4use Encode ();
2 5
3use Gtk2 -init; 6use Gtk2 -init;
4use Gtk2::Gdk::Keysyms; 7use Gtk2::Gdk::Keysyms;
5 8
9use Gtk2::CV;
10
6use Gtk2::CV::ImageWindow; 11use Gtk2::CV::ImageWindow;
7use Gtk2::CV::Schnauzer; 12use Gtk2::CV::Schnauzer;
8 13
9use Gtk2::CV; 14BEGIN {
15 require Gtk2::CV::Plugin;
16 require "$ENV{HOME}/.cvrc" if -r "$ENV{HOME}/.cvrc";
17}
18
19use Gtk2::CV::Plugin::NameCluster;
20use Gtk2::CV::Plugin::RCluster;
10 21
11Gtk2::Rc->parse (Gtk2::CV::find_rcfile "gtkrc"); 22Gtk2::Rc->parse (Gtk2::CV::find_rcfile "gtkrc");
12 23
13use File::Spec; 24use File::Spec;
14 25
… …
30 -s $_[1]; 41 -s $_[1];
31 $info->set_label ($label); 42 $info->set_label ($label);
32 $viewer->load_image ($_[1]); 43 $viewer->load_image ($_[1]);
33 }); 44 });
34 45
46 Gtk2::CV::Plugin->call (new_schnauzer => $s);
47
35 $s; 48 $s
36} 49}
37 50
38sub std_keys { 51sub std_keys {
39 my $key = $_[1]->keyval; 52 my $key = $_[1]->keyval;
40 my $state = $_[1]->state; 53 my $state = $_[1]->state;
… …
68 $h->load_string (do { local $/; <DATA> }); 81 $h->load_string (do { local $/; <DATA> });
69 } 82 }
70 83
71 $help->show_all; 84 $help->show_all;
72 } else { 85 } else {
73 #$mainwin->show_all; 86 return 0;
74 $schnauzer->handle_key ($key, $state);
75 } 87 }
76 88
77 1; 89 1
78} 90}
79 91
80{ 92{
81 $viewer = new Gtk2::CV::ImageWindow; 93 $viewer = new Gtk2::CV::ImageWindow;
82 94
83 $viewer->set_title ("CV: Image"); 95 $viewer->set_title ("CV: Image");
84 96
85 $viewer->signal_connect (key_press_event => \&std_keys); 97 $viewer->signal_connect (key_press_event => sub {
98 &std_keys
99 or $schnauzer->signal_emit (key_press_event => $_[1])
100 });
86 $viewer->signal_connect (delete_event => sub { main_quit Gtk2 }); 101 $viewer->signal_connect (delete_event => sub { main_quit Gtk2 });
87 102
88 $viewer->signal_connect (button3_press_event => sub { 103 $viewer->signal_connect (button3_press_event => sub {
89 $mainwin->visible 104 $mainwin->visible
90 ? $mainwin->hide 105 ? $mainwin->hide
91 : $mainwin->show_all; 106 : $mainwin->show_all;
92 1; 107 1
93 }); 108 });
109
110 Gtk2::CV::Plugin->call (new_imagewindow => $viewer);
94 111
95 $schnauzer = new_schnauzer; 112 $schnauzer = new_schnauzer;
96 113
97 $mainwin = new Gtk2::Window; 114 $mainwin = new Gtk2::Window;
98 $mainwin->set_title ("CV"); 115 $mainwin->set_title ("CV");
99 $mainwin->add (my $vbox = new Gtk2::VBox); 116 $mainwin->add (my $vbox = new Gtk2::VBox);
100 $mainwin->signal_connect (delete_event => sub { $mainwin->hide; 1; }); 117 $mainwin->signal_connect (delete_event => sub { $mainwin->hide; 1 });
101 118
102 $vbox->add ($schnauzer); 119 $vbox->add ($schnauzer);
103 $vbox->pack_end (my $frame = new Gtk2::Frame, 0, 0, 0); 120 $vbox->pack_end (my $frame = new Gtk2::Frame, 0, 0, 0);
104 $frame->add (my $hbox = new Gtk2::HBox 0, 0); 121 $frame->add (my $hbox = new Gtk2::HBox 0, 0);
105 $hbox->pack_start ((new Gtk2::Label "Info"), 0, 0, 0); 122 $hbox->pack_start ((new Gtk2::Label "Info: "), 0, 0, 0);
106 $hbox->pack_start (($info = new Gtk2::Label), 1, 1, 0); 123 $hbox->pack_end (my $labelwindow = new Gtk2::EventBox, 1, 1, 0);
124 $labelwindow->add ($info = new Gtk2::Label);
125 $labelwindow->signal_connect_after (size_request => sub { $_[1]->width (0); 0 });
126 $info->set (selectable => 1, xalign => 0, justify => "left");
107 127
108 $schnauzer->set_geometry_hints; 128 $schnauzer->set_geometry_hints;
109} 129}
110 130
111if (@ARGV) { 131if (@ARGV) {
112 $schnauzer->set_paths (\@ARGV); 132 @ARGV == 1 && -d $ARGV[0]
133 ? $schnauzer->set_dir (Glib::filename_to_unicode shift)
134 : $schnauzer->set_paths ([map Glib::filename_to_unicode $_, @ARGV]);
135 $schnauzer->show_all;
113 $schnauzer->handle_key ($Gtk2::Gdk::Keysyms{space}, []); 136 $schnauzer->handle_key ($Gtk2::Gdk::Keysyms{space}, []);
114
115 $viewer->load_image ($ARGV[0]);
116} else { 137} else {
117 $schnauzer->set_dir (File::Spec->curdir); 138 $schnauzer->set_dir (File::Spec->curdir);
118 $mainwin->show_all; 139 $mainwin->show_all;
119} 140}
120 141
… …
124 145
125__DATA__ 146__DATA__
126 147
127=head1 NAME 148=head1 NAME
128 149
129cv - a fast gtk+ image viewer modeled after xv 150cv - a fast gtk+ image viewer loosely modeled after XV
130 151
131=head1 SYNOPSIS 152=head1 SYNOPSIS
132 153
133 cv [file...] 154 cv [file...]
134 155
156=head1 FEATURES
157
158CV is supposed to work similar to the venerable XV image viewer, just
159faster. Why faster?
160
161=over 4
162
163=item * optimized directory scanning algorithm
164
165The directory scanning in CV plays some tricks that - on most modern
166filesystems - makes it possible to detect filetypes faster than stat()'ing
167every file. This makes CV suitable for directories with lots of files
168(10000+).
169
170This algorithm is quite unprecise - it doesn't make a difference between
171files, device nodes, symlinks and the like, and filetype detection is done
172using the file extension only.
173
174=item * queuing for all time-consuming background tasks
175
176All tasks, such as unlinking files or generating thumbnails, that can be
177done in the background will be done so - no waiting required, even when
178changing directories.
179
180=item * use of asynchronous I/O
181
182CV tries to use asynchronous I/O whereever it makes sense, for example
183while scanning directories, waiting for stat data, unlinking files or
184generating thumbnails. This usually decreases scanning times for large
185directories a bit (especially on RAID devices and over NFS) and makes CV
186much more interactive.
187
188=item * fast image loading
189
190The time span between the user issuing a command and displaying the new
191image should be as small as possible. CV uses optimized (especially
192for JPEG) loading functions and sacrifices some quality (e.g no gamma
193correction) to achieve this speed.
194
195=item * fast thumbnail creation
196
197Thumbnail creation is crucial for me, so it's better be fast. Thumbnail
198creation for JPEGs has been specially optimized.
199
200=item * minimum optical clutter
201
202CV has no menus or other user interface elements that take up a lot of
203screen space. The schnauzer windows can also be somewhat crowded.
204
205The point of an image viewer is viewing images, not a nice GUI. This is
206similar to XV's behaviour.
207
208=item * efficient (and hard to learn) user interface
209
210CV uses key combinations. A lot. If you are an experienced XV user, you
211will find most of these keys familiar. If not, CV might be hard to use at
212first, but will be an efficient tool later.
213
214=item * i18n'ed filename handling throughout
215
216As long as glib can recognize your filename encoding (either UTF-8 or
217locale-specific, depending on your settings) and you have the relevant
218fonts, CV will display your filenames correctly.
219
220=item * extensible through plug-ins
221
222I have weird plug-ins that access remote databases to find a
223directory. This is not likely to be of any use to other people. Likewise,
224others might have weird requirements I cannot dream of.
225
226=item * filename clustering
227
228Among the standard plug-ins is a filename clustering plug-in, that (in
229case of tens of thousands images in one directory) might be able to
230cluster similar names together.
231
232=back
233
135=head1 DESCRIPTION 234=head1 DESCRIPTION
136 235
137None yet.
138
139=head2 THE IMAGE WINDOW 236=head2 THE IMAGE WINDOW
140 237
141You can use the following keys in the image window: 238You can use the following keys in the image window:
142 239
143 q quit the program 240 q quit the program
144 < half the image size 241 < half the image size
145 > double the image size 242 > double the image size
146 , shrink the image by 10% 243 , shrink the image by 10%
147 . enlarge the image by 10% 244 . enlarge the image by 10%
148 n reset to normal size 245 n reset to normal size
149 m maximize to screensize 246 m maximize to screensize
150 M maxime to screensize, respecting image aspect 247 M maximize to screensize, respecting image aspect
151 ctrl-m toggle maxpect-always mode 248 ctrl-m toggle maxpect-always mode
152 u uncrop 249 u uncrop
153 r set scaling mode to 'nearest' (fastest) 250 r set scaling mode to 'nearest' (fastest)
154 s set scaling mode to 'bilinear' (default) 251 s set scaling mode to 'bilinear' (default)
155 S set scaling mode to 'hyper' (slowest) 252 shift-s set scaling mode to 'hyper' (slowest)
156 t rotate clockwise 90° 253 t rotate clockwise 90°
157 T rotate counterclockwise° 254 T rotate counterclockwise°
158 ctrl-v open a new visual schnauzer window for the current dir 255 ctrl-v open a new visual schnauzer window for the current dir
159 ctrl-s rescan visual schnauzer files for updates/deletes etc. 256 ctrl-e run an editor ($CV_EDITOR or "gimp") on the current image
257 ctrl-p fire up the print fialog
258 escape cancel a crop action
160 259
161The following keys are redirected to the default visual schnauzer window: 260And when playing movies, these additional keys are active:
162 261
163 space next image 262 left rewind by 10 seconds
164 backspace last image 263 right forward by 10 seconds
264 down rewind by 60 seconds
265 up forward by 60 seconds
266 pg_up rewind by 600 seconds
267 pg_down forward by 600 seconds
268 o toggle on-screen display
269 p pause/unpause
270 escape stop playing
271 9 turn volume down
272 0 turn volume up
273
274Any other keys will be sent to the default schnauzer window, which can be
275toggled on and off by right-clicking into the image window.
276
277Left-clicking into the image window will let you crop the image (usually
278to zoom into large images that CV scales down).
165 279
166=head2 THE VISUAL SCHNAUZER 280=head2 THE VISUAL SCHNAUZER
167 281
168You can use the following keys in the schnauzer window: 282You can use the following keys in the schnauzer window:
169 283
284 ctrl-space,
170 space move to and display next image 285 space move to and display next image
286 ctrl-backspace,
171 backspace move to and display previous image 287 backspace move to and display previous image
288 ctrl-return,
172 return display selected picture 289 return display selected picture, or enter directory
173 290
174 cursor keys move selection 291 cursor keys move selection
175 page-up move one page up 292 page-up move one page up
176 page-down move one page down 293 page-down move one page down
177 home move to first file 294 home move to first file
178 end move to last file 295 end move to last file
179 296
297 ctrl-a select all files
298 ctrl-shift-a select all files currently displayed in the schnauzer window
180 ctrl-d delete selected files WITHOUT ASKING AGAIN 299 ctrl-d delete selected files WITHOUT ASKING AGAIN
181 ctrl-g generate icons for the selected files 300 ctrl-g force generation of thumbnais for the selected files
301 ctrl-s rescan current direcory or files updates/deletes etc.
182 ctrl-u update selected (or all) icons if neccessary 302 ctrl-u update selected (or all) icons if neccessary
303 ctrl-l don't use, will become a plug-in eventually
304
305 0-9,
306 a-z find the first filename beginning with this letter
307
308Right-clicking into the schnauzer window displays a pop-up menu with
309additional actions.
310
311=head1 FILES
312
313When starting, CV runs the F<.cvrc> file in your F<$HOME> directory as if
314it were a perl script. in that, you will mostly load plug-ins.
315
316Example:
317
318 system "fping -q -t 10 ether"
319 or require "/fs/cv/cvplugin.pl";
320
321This will load a plug-in, but only if the machine I<ether> is reachable
322(supposedly the plug-in is networked in some way :).
183 323
184=head1 ENVIRONMENT 324=head1 ENVIRONMENT
185 325
186=over 4 326=over 4
187 327
328=item CV_EDITOR
329
330The program that gets executed when the user presses C<CTRL-e> in the
331Schnauzer or image window. The default is C<gimp>.
332
188=item CV_PRINT_DESTINATION 333=item CV_PRINT_DESTINATION
189 334
190The default (perl-style) destination to use in the print dialog. 335The default (perl-style) destination to use in the print dialog.
191 336
337=item CV_TRASHCAN
338
339When set, must point to a directory where all files that are deleted are
340moved to. If unset, files that are deleted are really being deleted.
341
192=back 342=back
193 343
194=head1 SECURITY CONSIDERATIONS 344=head1 SECURITY CONSIDERATIONS
195 345
196CV uses Pixbuf to load images. Pixbuf is not considered safe for this 346CV uses Pixbuf to load non-JPEG images. Pixbuf is not considered safe for
197purpose, though (from the gtk-2.2 release notes): 347this purpose, though (from the gtk-2.2 release notes):
198 348
199"While efforts have been made to make gdk-pixbuf robust against invalid 349"While efforts have been made to make gdk-pixbuf robust against invalid
200images, using gdk-pixbuf to load untrusted data is not recommended, due to 350images, using gdk-pixbuf to load untrusted data is not recommended, due to
201the likelyhood that there are additional problems where an invalid image 351the likelyhood that there are additional problems where an invalid image
202could cause gdk-pixbuf to crash or worse." 352could cause gdk-pixbuf to crash or worse."
203 353
204=head1 BUGS/TODO 354=head1 BUGS/TODO
205 355
356 Lots of functionality is missing.
357
206 Pixbuf doesn't honor G_BROKEN_FILENAMES, so accessing files with names 358 Pixbuf doesn't always honor G_BROKEN_FILENAMES, so accessing files with
207 incompatible with utf-8 fails. 359 names incompatible with utf-8 might fail.
208 360
209 rotate on disk 361 rotate on disk
210 print
211 lots of ui issues 362 lots of ui issues
212 save(?) 363 save(?)
213 preferences 364 preferences
214 ctrl-u in schnauzer
215 shift-cursor in schnauzer
216 365
217=head1 AUTHOR 366=head1 AUTHOR
218 367
219Marc Lehmann <cv@plan9.de>. 368Marc Lehmann <cv@plan9.de>.
220 369

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