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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 1.55 by root, Mon Aug 22 00:30:58 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 uses 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
174On the positive side, it is usually many orders of magnitude faster than
175traditional scanning techniques (good for directories with 10000 or
176100000+ files).
177
178=item * queuing for all time-consuming background tasks
179
180All tasks, such as unlinking files or generating thumbnails, that can be
181done in the background will be done so - no waiting required, even when
182changing directories.
183
184=item * use of asynchronous I/O
185
186CV tries to use asynchronous I/O whereever it makes sense, for example
187while scanning directories, waiting for stat data, unlinking files or
188generating thumbnails. This usually decreases scanning times for large
189directories a bit (especially on RAID devices and over NFS) and makes CV
190much more interactive.
191
192=item * fast image loading
193
194The time span between the user issuing a command and displaying the new
195image should be as small as possible. CV uses optimized (especially
196for JPEG) loading functions and sacrifices some quality (e.g no gamma
197correction, although this might change) to achieve this speed.
198
199=item * fast thumbnail creation
200
201Thumbnail creation uses both CPU and Disk-I/O. CV interleaves both, so
202on modern CPUs, thumbnailing is usually limited by I/O speed. Thumbnail
203creation for JPEGs has been specially optimized and can even take
204advantage of multiple CPUs.
205
206=item * minimum optical clutter
207
208CV has no menus or other user interface elements that take up a lot of
209screen space (or are useful for beginning users). The schnauzer windows
210can also be somewhat crowded.
211
212The point of an image viewer is viewing images, not a nice GUI. This is
213similar to XV's behaviour.
214
215=item * efficient (and hard to learn) user interface
216
217CV uses key combinations. A lot. If you are an experienced XV user, you
218will find most of these keys familiar. If not, CV might be hard to use at
219first, but will be an efficient tool later.
220
221=item * multi-window GUI
222
223CV doesn't force you to use a specific layout, instead it relies on your
224window manager, thus enabling you to chose whatever layout that suits you
225most.
226
227=item * i18n'ed filename handling throughout
228
229As long as glib can recognize your filename encoding (either UTF-8 or
230locale-specific, depending on the setting of G_BROKEN_FILENAMES) and you
231have the relevant fonts, CV will display your filenames correctly.
232
233=item * extensible through plug-ins
234
235I have weird plug-ins that access remote databases to find a
236directory. This is not likely to be of any use to other people. Likewise,
237others might have weird requirements I cannot dream of.
238
239=item * filename clustering
240
241Among the standard plug-ins is a filename clustering plug-in, that (in
242case of tens of thousands images in one directory) might be able to
243cluster similar names together.
244
245=back
246
135=head1 DESCRIPTION 247=head1 DESCRIPTION
136 248
137None yet.
138
139=head2 THE IMAGE WINDOW 249=head2 THE IMAGE WINDOW
140 250
141You can use the following keys in the image window: 251You can use the following keys in the image window:
142 252
143 q quit the program 253 q quit the program
144 < half the image size 254 < half the image size
145 > double the image size 255 > double the image size
146 , shrink the image by 10% 256 , shrink the image by 10%
147 . enlarge the image by 10% 257 . enlarge the image by 10%
148 n reset to normal size 258 n reset to normal size
149 m maximize to screensize 259 m maximize to screensize
150 M maxime to screensize, respecting image aspect 260 M maximize to screensize, respecting image aspect
151 ctrl-m toggle maxpect-always mode 261 ctrl-m toggle maxpect-always mode
152 u uncrop 262 u uncrop
153 r set scaling mode to 'nearest' (fastest) 263 r set scaling mode to 'nearest' (fastest)
154 s set scaling mode to 'bilinear' (default) 264 s set scaling mode to 'bilinear' (default)
155 S set scaling mode to 'hyper' (slowest) 265 shift-s set scaling mode to 'hyper' (slowest)
156 t rotate clockwise 90° 266 t rotate clockwise 90°
157 T rotate counterclockwise° 267 T rotate counterclockwise°
158 ctrl-v open a new visual schnauzer window for the current dir 268 ctrl-v open a new visual schnauzer window for the current dir
159 ctrl-s rescan visual schnauzer files for updates/deletes etc. 269 ctrl-e run an editor ($CV_EDITOR or "gimp") on the current image
270 ctrl-p fire up the print fialog
271 escape cancel a crop action
160 272
161The following keys are redirected to the default visual schnauzer window: 273And when playing movies, these additional keys are active:
162 274
163 space next image 275 left rewind by 10 seconds
164 backspace last image 276 right forward by 10 seconds
277 down rewind by 60 seconds
278 up forward by 60 seconds
279 pg_up rewind by 600 seconds
280 pg_down forward by 600 seconds
281 o toggle on-screen display
282 p pause/unpause
283 escape stop playing
284 9 turn volume down
285 0 turn volume up
286
287Any other keys will be sent to the default schnauzer window, which can be
288toggled on and off by right-clicking into the image window.
289
290Left-clicking into the image window will let you crop the image (usually
291to zoom into large images that CV scales down).
165 292
166=head2 THE VISUAL SCHNAUZER 293=head2 THE VISUAL SCHNAUZER
167 294
168You can use the following keys in the schnauzer window: 295You can use the following keys in the schnauzer window:
169 296
297 ctrl-space,
170 space move to and display next image 298 space move to and display next image
299 ctrl-backspace,
171 backspace move to and display previous image 300 backspace move to and display previous image
301 ctrl-return,
172 return display selected picture 302 return display selected picture, or enter directory
173 303
174 cursor keys move selection 304 cursor keys move selection
175 page-up move one page up 305 page-up move one page up
176 page-down move one page down 306 page-down move one page down
177 home move to first file 307 home move to first file
178 end move to last file 308 end move to last file
179 309
310 ctrl-a select all files
311 ctrl-shift-a select all files currently displayed in the schnauzer window
180 ctrl-d delete selected files WITHOUT ASKING AGAIN 312 ctrl-d delete selected files WITHOUT ASKING AGAIN
181 ctrl-g generate icons for the selected files 313 ctrl-g force generation of thumbnais for the selected files
314 ctrl-s rescan current direcory or files updates/deletes etc.
182 ctrl-u update selected (or all) icons if neccessary 315 ctrl-u update selected (or all) icons if neccessary
316 ctrl-l don't use, will become a plug-in eventually
317
318 0-9,
319 a-z find the first filename beginning with this letter
320
321Right-clicking into the schnauzer window displays a pop-up menu with
322additional actions.
323
324=head1 FILES
325
326When starting, CV runs the F<.cvrc> file in your F<$HOME> directory as if
327it were a perl script. in that, you will mostly load plug-ins.
328
329Example:
330
331 system "fping -q -t 10 ether"
332 or require "/fs/cv/cvplugin.pl";
333
334This will load a plug-in, but only if the machine I<ether> is reachable
335(supposedly the plug-in is networked in some way :).
183 336
184=head1 ENVIRONMENT 337=head1 ENVIRONMENT
185 338
186=over 4 339=over 4
187 340
341=item CV_EDITOR
342
343The program that gets executed when the user presses C<CTRL-e> in the
344Schnauzer or image window. The default is C<gimp>.
345
188=item CV_PRINT_DESTINATION 346=item CV_PRINT_DESTINATION
189 347
190The default (perl-style) destination to use in the print dialog. 348The default (perl-style) destination to use in the print dialog.
191 349
350=item CV_TRASHCAN
351
352When set, must point to a directory where all files that are deleted are
353moved to. If unset, files that are deleted are really being deleted.
354
192=back 355=back
193 356
194=head1 SECURITY CONSIDERATIONS 357=head1 SECURITY CONSIDERATIONS
195 358
196CV uses Pixbuf to load images. Pixbuf is not considered safe for this 359CV uses Pixbuf to load non-JPEG images. Pixbuf is not considered safe for
197purpose, though (from the gtk-2.2 release notes): 360this purpose, though (from the gtk-2.2 release notes):
198 361
199"While efforts have been made to make gdk-pixbuf robust against invalid 362"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 363images, using gdk-pixbuf to load untrusted data is not recommended, due to
201the likelyhood that there are additional problems where an invalid image 364the likelyhood that there are additional problems where an invalid image
202could cause gdk-pixbuf to crash or worse." 365could cause gdk-pixbuf to crash or worse."
203 366
204=head1 BUGS/TODO 367=head1 BUGS/TODO
205 368
369 Lots of functionality is missing.
370
206 Pixbuf doesn't honor G_BROKEN_FILENAMES, so accessing files with names 371 Pixbuf doesn't always honor G_BROKEN_FILENAMES, so accessing files with
207 incompatible with utf-8 fails. 372 names incompatible with utf-8 might fail.
208 373
209 rotate on disk 374 rotate on disk
210 print
211 lots of ui issues 375 lots of ui issues
212 save(?) 376 save(?)
213 preferences 377 preferences
214 ctrl-u in schnauzer
215 shift-cursor in schnauzer
216 378
217=head1 AUTHOR 379=head1 AUTHOR
218 380
219Marc Lehmann <cv@plan9.de>. 381Marc Lehmann <cv@plan9.de>.
220 382

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