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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 1.59 by root, Thu Sep 8 00:40:23 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
… …
122 143
123main Gtk2; 144main Gtk2;
124 145
125__DATA__ 146__DATA__
126 147
148=encoding utf-8
149
127=head1 NAME 150=head1 NAME
128 151
129cv - a fast gtk+ image viewer modeled after xv 152cv - a fast gtk+ image viewer loosely modeled after XV
130 153
131=head1 SYNOPSIS 154=head1 SYNOPSIS
132 155
133 cv [file...] 156 cv [file...]
134 157
158=head1 FEATURES
159
160CV is supposed to work similar to the venerable XV image viewer, just
161faster. Why faster?
162
163=over 4
164
165=item * optimized directory scanning algorithm
166
167The directory scanning in CV uses some tricks that - on most modern
168filesystems - makes it possible to detect filetypes faster than stat()'ing
169every file. This makes CV suitable for directories with lots of files
170(10000+).
171
172This algorithm is quite unprecise - it doesn't make a difference between
173files, device nodes, symlinks and the like, and filetype detection is done
174using the file extension only.
175
176On the positive side, it is usually many orders of magnitude faster than
177traditional scanning techniques (good for directories with 10000 or
178100000+ files).
179
180=item * queuing for all time-consuming background tasks
181
182All tasks, such as unlinking files or generating thumbnails, that can be
183done in the background will be done so - no waiting required, even when
184changing directories.
185
186=item * use of asynchronous I/O
187
188CV tries to use asynchronous I/O whereever it makes sense, for example
189while scanning directories, waiting for stat data, unlinking files or
190generating thumbnails. This usually decreases scanning times for large
191directories a bit (especially on RAID devices and over NFS) and makes CV
192much more interactive.
193
194=item * fast image loading
195
196The time span between the user issuing a command and displaying the new
197image should be as small as possible. CV uses optimized (especially
198for JPEG) loading functions and sacrifices some quality (e.g no gamma
199correction, although this might change) to achieve this speed.
200
201=item * fast thumbnail creation
202
203Thumbnail creation uses both CPU and Disk-I/O. CV interleaves both, so
204on modern CPUs, thumbnailing is usually limited by I/O speed. Thumbnail
205creation for JPEGs has been specially optimized and can even take
206advantage of multiple CPUs.
207
208=item * minimum optical clutter
209
210CV has no menus or other user interface elements that take up a lot of
211screen space (or are useful for beginning users). The schnauzer windows
212can also be somewhat crowded.
213
214The point of an image viewer is viewing images, not a nice GUI. This is
215similar to XV's behaviour.
216
217=item * efficient (and hard to learn) user interface
218
219CV uses key combinations. A lot. If you are an experienced XV user, you
220will find most of these keys familiar. If not, CV might be hard to use at
221first, but will be an efficient tool later.
222
223=item * multi-window GUI
224
225CV doesn't force you to use a specific layout, instead it relies on your
226window manager, thus enabling you to chose whatever layout that suits you
227most.
228
229=item * i18n'ed filename handling throughout
230
231As long as glib can recognize your filename encoding (either UTF-8 or
232locale-specific, depending on the setting of G_BROKEN_FILENAMES) and you
233have the relevant fonts, CV will display your filenames correctly.
234
235=item * extensible through plug-ins
236
237I have weird plug-ins that access remote databases to find a
238directory. This is not likely to be of any use to other people. Likewise,
239others might have weird requirements I cannot dream of.
240
241=item * filename clustering
242
243Among the standard plug-ins is a filename clustering plug-in, that (in
244case of tens of thousands images in one directory) might be able to
245cluster similar names together.
246
247=back
248
135=head1 DESCRIPTION 249=head1 DESCRIPTION
136 250
137None yet.
138
139=head2 THE IMAGE WINDOW 251=head2 THE IMAGE WINDOW
140 252
141You can use the following keys in the image window: 253You can use the following keys in the image window:
142 254
143 q quit the program 255 q quit the program
144 < half the image size 256 < half the image size
145 > double the image size 257 > double the image size
146 , shrink the image by 10% 258 , shrink the image by 10%
147 . enlarge the image by 10% 259 . enlarge the image by 10%
148 n reset to normal size 260 n reset to normal size
149 m maximize to screensize 261 m maximize to screensize
150 M maxime to screensize, respecting image aspect 262 M maximize to screensize, respecting image aspect
151 ctrl-m toggle maxpect-always mode 263 ctrl-m toggle maxpect-always mode
264 ctrl-sift-m toggle using current image size as max image size
152 u uncrop 265 u uncrop
153 r set scaling mode to 'nearest' (fastest) 266 r set scaling mode to 'nearest' (fastest)
154 s set scaling mode to 'bilinear' (default) 267 s set scaling mode to 'bilinear' (default)
155 S set scaling mode to 'hyper' (slowest) 268 shift-s set scaling mode to 'hyper' (slowest)
156 t rotate clockwise 90° 269 t rotate clockwise 90°
157 T rotate counterclockwise° 270 T rotate counterclockwise°
158 ctrl-v open a new visual schnauzer window for the current dir 271 ctrl-v open a new visual schnauzer window for the current dir
159 ctrl-s rescan visual schnauzer files for updates/deletes etc. 272 ctrl-e run an editor ($CV_EDITOR or "gimp") on the current image
273 ctrl-p fire up the print dialog
274 escape cancel a crop action
160 275
161The following keys are redirected to the default visual schnauzer window: 276And when playing movies, these additional keys are active:
162 277
163 space next image 278 left rewind by 10 seconds
164 backspace last image 279 right forward by 10 seconds
280 down rewind by 60 seconds
281 up forward by 60 seconds
282 pg_up rewind by 600 seconds
283 pg_down forward by 600 seconds
284 o toggle on-screen display
285 p pause/unpause
286 escape stop playing
287 9 turn volume down
288 0 turn volume up
289
290Any other keys will be sent to the default schnauzer window, which can be
291toggled on and off by right-clicking into the image window.
292
293Left-clicking into the image window will let you crop the image (usually
294to zoom into large images that CV scales down).
165 295
166=head2 THE VISUAL SCHNAUZER 296=head2 THE VISUAL SCHNAUZER
167 297
168You can use the following keys in the schnauzer window: 298You can use the following keys in the schnauzer window:
169 299
300 ctrl-space,
170 space move to and display next image 301 space move to and display next image
302 ctrl-backspace,
171 backspace move to and display previous image 303 backspace move to and display previous image
304 ctrl-return,
172 return display selected picture 305 return display selected picture, or enter directory
173 306
174 cursor keys move selection 307 cursor keys move selection
175 page-up move one page up 308 page-up move one page up
176 page-down move one page down 309 page-down move one page down
177 home move to first file 310 home move to first file
178 end move to last file 311 end move to last file
179 312
313 ctrl-a select all files
314 ctrl-shift-a select all files currently displayed in the schnauzer window
180 ctrl-d delete selected files WITHOUT ASKING AGAIN 315 ctrl-d delete selected files WITHOUT ASKING AGAIN
181 ctrl-g generate icons for the selected files 316 ctrl-g force generation of thumbnais for the selected files
317 ctrl-s rescan current direcory or files updates/deletes etc.
182 ctrl-u update selected (or all) icons if neccessary 318 ctrl-u update selected (or all) icons if neccessary
319 ctrl-l don't use, will become a plug-in eventually
320
321 ^ go to parent directory (caret).
322
323 0-9,
324 a-z find the first filename beginning with this letter
325
326Right-clicking into the schnauzer window displays a pop-up menu with
327additional actions.
328
329=head1 FILES
330
331When starting, CV runs the F<.cvrc> file in your F<$HOME> directory as if
332it were a perl script. in that, you will mostly load plug-ins.
333
334Example:
335
336 system "fping -q -t 10 ether"
337 or require "/fs/cv/cvplugin.pl";
338
339This will load a plug-in, but only if the machine I<ether> is reachable
340(supposedly the plug-in is networked in some way :).
183 341
184=head1 ENVIRONMENT 342=head1 ENVIRONMENT
185 343
186=over 4 344=over 4
187 345
346=item CV_EDITOR
347
348The program that gets executed when the user presses C<CTRL-e> in the
349Schnauzer or image window. The default is C<gimp>.
350
188=item CV_PRINT_DESTINATION 351=item CV_PRINT_DESTINATION
189 352
190The default (perl-style) destination to use in the print dialog. 353The default (perl-style) destination to use in the print dialog.
191 354
355=item CV_TRASHCAN
356
357When set, must point to a directory where all files that are deleted are
358moved to. If unset, files that are deleted are really being deleted.
359
192=back 360=back
193 361
194=head1 SECURITY CONSIDERATIONS 362=head1 SECURITY CONSIDERATIONS
195 363
196CV uses Pixbuf to load images. Pixbuf is not considered safe for this 364CV uses Pixbuf to load non-JPEG images. Pixbuf is not considered safe for
197purpose, though (from the gtk-2.2 release notes): 365this purpose, though (from the gtk-2.2 release notes):
198 366
199"While efforts have been made to make gdk-pixbuf robust against invalid 367"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 368images, using gdk-pixbuf to load untrusted data is not recommended, due to
201the likelyhood that there are additional problems where an invalid image 369the likelyhood that there are additional problems where an invalid image
202could cause gdk-pixbuf to crash or worse." 370could cause gdk-pixbuf to crash or worse."
203 371
204=head1 BUGS/TODO 372=head1 BUGS/TODO
205 373
374 Lots of functionality is missing.
375
206 Pixbuf doesn't honor G_BROKEN_FILENAMES, so accessing files with names 376 Pixbuf doesn't always honor G_BROKEN_FILENAMES, so accessing files with
207 incompatible with utf-8 fails. 377 names incompatible with utf-8 might fail.
208 378
209 rotate on disk 379 rotate on disk
210 print
211 lots of ui issues 380 lots of ui issues
212 save(?) 381 save(?)
213 preferences 382 preferences
214 ctrl-u in schnauzer
215 shift-cursor in schnauzer
216 383
217=head1 AUTHOR 384=head1 AUTHOR
218 385
219Marc Lehmann <cv@plan9.de>. 386Marc Lehmann <cv@plan9.de>.
220 387

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