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Comparing CV/bin/cv (file contents):
Revision 1.30 by root, Mon Nov 17 04:04:49 2003 UTC vs.
Revision 1.57 by root, Wed Sep 7 17:17:39 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 $_ = Glib::filename_to_unicode $_ for @ARGV; 132 @ARGV == 1 && -d $ARGV[0]
113 $schnauzer->set_paths (\@ARGV); 133 ? $schnauzer->set_dir (Glib::filename_to_unicode shift)
134 : $schnauzer->set_paths ([map Glib::filename_to_unicode $_, @ARGV]);
135 $schnauzer->show_all;
114 $schnauzer->handle_key ($Gtk2::Gdk::Keysyms{space}, []); 136 $schnauzer->handle_key ($Gtk2::Gdk::Keysyms{space}, []);
115
116 $viewer->load_image ($ARGV[0]);
117} else { 137} else {
118 $schnauzer->set_dir (File::Spec->curdir); 138 $schnauzer->set_dir (File::Spec->curdir);
119 $mainwin->show_all; 139 $mainwin->show_all;
120} 140}
121 141
… …
125 145
126__DATA__ 146__DATA__
127 147
128=head1 NAME 148=head1 NAME
129 149
130cv - a fast gtk+ image viewer modeled after xv 150cv - a fast gtk+ image viewer loosely modeled after XV
131 151
132=head1 SYNOPSIS 152=head1 SYNOPSIS
133 153
134 cv [file...] 154 cv [file...]
135 155
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
136=head1 DESCRIPTION 247=head1 DESCRIPTION
137 248
138None yet.
139
140=head2 THE IMAGE WINDOW 249=head2 THE IMAGE WINDOW
141 250
142You can use the following keys in the image window: 251You can use the following keys in the image window:
143 252
144 q quit the program 253 q quit the program
145 < half the image size 254 < half the image size
146 > double the image size 255 > double the image size
147 , shrink the image by 10% 256 , shrink the image by 10%
148 . enlarge the image by 10% 257 . enlarge the image by 10%
149 n reset to normal size 258 n reset to normal size
150 m maximize to screensize 259 m maximize to screensize
151 M maxime to screensize, respecting image aspect 260 M maximize to screensize, respecting image aspect
152 ctrl-m toggle maxpect-always mode 261 ctrl-m toggle maxpect-always mode
153 u uncrop 262 u uncrop
154 r set scaling mode to 'nearest' (fastest) 263 r set scaling mode to 'nearest' (fastest)
155 s set scaling mode to 'bilinear' (default) 264 s set scaling mode to 'bilinear' (default)
156 S set scaling mode to 'hyper' (slowest) 265 shift-s set scaling mode to 'hyper' (slowest)
157 t rotate clockwise 90° 266 t rotate clockwise 90°
158 T rotate counterclockwise° 267 T rotate counterclockwise°
159 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
160 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 dialog
271 escape cancel a crop action
161 272
162The following keys are redirected to the default visual schnauzer window: 273And when playing movies, these additional keys are active:
163 274
164 space next image 275 left rewind by 10 seconds
165 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).
166 292
167=head2 THE VISUAL SCHNAUZER 293=head2 THE VISUAL SCHNAUZER
168 294
169You can use the following keys in the schnauzer window: 295You can use the following keys in the schnauzer window:
170 296
297 ctrl-space,
171 space move to and display next image 298 space move to and display next image
299 ctrl-backspace,
172 backspace move to and display previous image 300 backspace move to and display previous image
301 ctrl-return,
173 return display selected picture 302 return display selected picture, or enter directory
174 303
175 cursor keys move selection 304 cursor keys move selection
176 page-up move one page up 305 page-up move one page up
177 page-down move one page down 306 page-down move one page down
178 home move to first file 307 home move to first file
179 end move to last file 308 end move to last file
180 309
310 ctrl-a select all files
311 ctrl-shift-a select all files currently displayed in the schnauzer window
181 ctrl-d delete selected files WITHOUT ASKING AGAIN 312 ctrl-d delete selected files WITHOUT ASKING AGAIN
182 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.
183 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 ^ go to parent directory (caret).
319
320 0-9,
321 a-z find the first filename beginning with this letter
322
323Right-clicking into the schnauzer window displays a pop-up menu with
324additional actions.
325
326=head1 FILES
327
328When starting, CV runs the F<.cvrc> file in your F<$HOME> directory as if
329it were a perl script. in that, you will mostly load plug-ins.
330
331Example:
332
333 system "fping -q -t 10 ether"
334 or require "/fs/cv/cvplugin.pl";
335
336This will load a plug-in, but only if the machine I<ether> is reachable
337(supposedly the plug-in is networked in some way :).
184 338
185=head1 ENVIRONMENT 339=head1 ENVIRONMENT
186 340
187=over 4 341=over 4
188 342
343=item CV_EDITOR
344
345The program that gets executed when the user presses C<CTRL-e> in the
346Schnauzer or image window. The default is C<gimp>.
347
189=item CV_PRINT_DESTINATION 348=item CV_PRINT_DESTINATION
190 349
191The default (perl-style) destination to use in the print dialog. 350The default (perl-style) destination to use in the print dialog.
192 351
352=item CV_TRASHCAN
353
354When set, must point to a directory where all files that are deleted are
355moved to. If unset, files that are deleted are really being deleted.
356
193=back 357=back
194 358
195=head1 SECURITY CONSIDERATIONS 359=head1 SECURITY CONSIDERATIONS
196 360
197CV uses Pixbuf to load images. Pixbuf is not considered safe for this 361CV uses Pixbuf to load non-JPEG images. Pixbuf is not considered safe for
198purpose, though (from the gtk-2.2 release notes): 362this purpose, though (from the gtk-2.2 release notes):
199 363
200"While efforts have been made to make gdk-pixbuf robust against invalid 364"While efforts have been made to make gdk-pixbuf robust against invalid
201images, using gdk-pixbuf to load untrusted data is not recommended, due to 365images, using gdk-pixbuf to load untrusted data is not recommended, due to
202the likelyhood that there are additional problems where an invalid image 366the likelyhood that there are additional problems where an invalid image
203could cause gdk-pixbuf to crash or worse." 367could cause gdk-pixbuf to crash or worse."
204 368
205=head1 BUGS/TODO 369=head1 BUGS/TODO
206 370
371 Lots of functionality is missing.
372
207 Pixbuf doesn't honor G_BROKEN_FILENAMES, so accessing files with names 373 Pixbuf doesn't always honor G_BROKEN_FILENAMES, so accessing files with
208 incompatible with utf-8 fails. 374 names incompatible with utf-8 might fail.
209 375
210 rotate on disk 376 rotate on disk
211 print
212 lots of ui issues 377 lots of ui issues
213 save(?) 378 save(?)
214 preferences 379 preferences
215 ctrl-u in schnauzer
216 shift-cursor in schnauzer
217 380
218=head1 AUTHOR 381=head1 AUTHOR
219 382
220Marc Lehmann <cv@plan9.de>. 383Marc Lehmann <cv@plan9.de>.
221 384

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