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Comparing CV/bin/cv (file contents):
Revision 1.46 by root, Sun Jul 17 05:01:30 2005 UTC vs.
Revision 1.61 by root, Sat Sep 24 00:51:28 2005 UTC

… …
4use Encode (); 4use Encode ();
5 5
6use Gtk2 -init; 6use Gtk2 -init;
7use Gtk2::Gdk::Keysyms; 7use Gtk2::Gdk::Keysyms;
8 8
9use Gtk2::CV;
10
9use Gtk2::CV::ImageWindow; 11use Gtk2::CV::ImageWindow;
10use Gtk2::CV::Schnauzer; 12use Gtk2::CV::Schnauzer;
11 13
12use 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;
13 21
14Gtk2::Rc->parse (Gtk2::CV::find_rcfile "gtkrc"); 22Gtk2::Rc->parse (Gtk2::CV::find_rcfile "gtkrc");
15 23
16use File::Spec; 24use File::Spec;
17
18require Gtk2::CV::Plugin;
19require "$ENV{HOME}/.cvrc" if -r "$ENV{HOME}/.cvrc";
20 25
21my $mainwin; 26my $mainwin;
22my $viewer; 27my $viewer;
23my $schnauzer; 28my $schnauzer;
24my $info; 29my $info;
… …
38 $viewer->load_image ($_[1]); 43 $viewer->load_image ($_[1]);
39 }); 44 });
40 45
41 Gtk2::CV::Plugin->call (new_schnauzer => $s); 46 Gtk2::CV::Plugin->call (new_schnauzer => $s);
42 47
43 $s; 48 $s
44} 49}
45 50
46sub std_keys { 51sub std_keys {
47 my $key = $_[1]->keyval; 52 my $key = $_[1]->keyval;
48 my $state = $_[1]->state; 53 my $state = $_[1]->state;
… …
97 102
98 $viewer->signal_connect (button3_press_event => sub { 103 $viewer->signal_connect (button3_press_event => sub {
99 $mainwin->visible 104 $mainwin->visible
100 ? $mainwin->hide 105 ? $mainwin->hide
101 : $mainwin->show_all; 106 : $mainwin->show_all;
102 1; 107 1
103 }); 108 });
104 109
105 Gtk2::CV::Plugin->call (new_imagewindow => $viewer); 110 Gtk2::CV::Plugin->call (new_imagewindow => $viewer);
106 111
107 $schnauzer = new_schnauzer; 112 $schnauzer = new_schnauzer;
108 113
109 $mainwin = new Gtk2::Window; 114 $mainwin = new Gtk2::Window;
110 $mainwin->set_title ("CV"); 115 $mainwin->set_title ("CV");
111 $mainwin->add (my $vbox = new Gtk2::VBox); 116 $mainwin->add (my $vbox = new Gtk2::VBox);
112 $mainwin->signal_connect (delete_event => sub { $mainwin->hide; 1; }); 117 $mainwin->signal_connect (delete_event => sub { $mainwin->hide; 1 });
113 118
114 $vbox->add ($schnauzer); 119 $vbox->add ($schnauzer);
115 $vbox->pack_end (my $frame = new Gtk2::Frame, 0, 0, 0); 120 $vbox->pack_end (my $frame = new Gtk2::Frame, 0, 0, 0);
116 $frame->add (my $hbox = new Gtk2::HBox 0, 0); 121 $frame->add (my $hbox = new Gtk2::HBox 0, 0);
117 $hbox->pack_start ((new Gtk2::Label "Info: "), 0, 0, 0); 122 $hbox->pack_start ((new Gtk2::Label "Info: "), 0, 0, 0);
… …
122 127
123 $schnauzer->set_geometry_hints; 128 $schnauzer->set_geometry_hints;
124} 129}
125 130
126if (@ARGV) { 131if (@ARGV) {
132 @ARGV == 1 && -d $ARGV[0]
133 ? $schnauzer->set_dir (Glib::filename_to_unicode shift)
127 $schnauzer->set_paths ([map Glib::filename_to_unicode $_, @ARGV]); 134 : $schnauzer->set_paths ([map Glib::filename_to_unicode $_, @ARGV]);
128 $schnauzer->show_all; 135 $schnauzer->show_all;
129$viewer->show_all;
130 $schnauzer->handle_key ($Gtk2::Gdk::Keysyms{space}, []); 136 $schnauzer->handle_key ($Gtk2::Gdk::Keysyms{space}, []);
131} else { 137} else {
132 $schnauzer->set_dir (File::Spec->curdir); 138 $schnauzer->set_dir (File::Spec->curdir);
133 $mainwin->show_all; 139 $mainwin->show_all;
134 $viewer->show_all;
135} 140}
136 141
137$viewer->show_all; 142$viewer->show_all;
138 143
139main Gtk2; 144main Gtk2;
140 145
141__DATA__ 146__DATA__
142 147
148=encoding utf-8
149
143=head1 NAME 150=head1 NAME
144 151
145cv - a fast gtk+ image viewer modeled after xv 152cv - a fast gtk+ image viewer loosely modeled after XV
146 153
147=head1 SYNOPSIS 154=head1 SYNOPSIS
148 155
149 cv [file...] 156 cv [file...]
150 157
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
151=head1 DESCRIPTION 249=head1 DESCRIPTION
152 250
153None yet.
154
155=head2 THE IMAGE WINDOW 251=head2 THE IMAGE WINDOW
156 252
157You can use the following keys in the image window: 253You can use the following keys in the image window:
158 254
159 q quit the program 255 q quit the program
160 < half the image size 256 < half the image size
161 > double the image size 257 > double the image size
162 , shrink the image by 10% 258 , shrink the image by 10%
163 . enlarge the image by 10% 259 . enlarge the image by 10%
164 n reset to normal size 260 n reset to normal size
165 m maximize to screensize 261 m maximize to screensize
166 M maxime to screensize, respecting image aspect 262 M maximize to screensize, respecting image aspect
167 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
168 u uncrop 265 u uncrop
169 r set scaling mode to 'nearest' (fastest) 266 r set scaling mode to 'nearest' (fastest)
170 s set scaling mode to 'bilinear' (default) 267 s set scaling mode to 'bilinear' (default)
171 S set scaling mode to 'hyper' (slowest) 268 shift-s set scaling mode to 'hyper' (slowest)
172 t rotate clockwise 90° 269 t rotate clockwise 90°
173 T rotate counterclockwise° 270 T rotate counterclockwise°
174 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
175 ctrl-s rescan visual schnauzer files for updates/deletes etc.
176 ctrl-e run an editor ($CV_EDITOR or "gimp") on the current image. 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
177 275
178And when playing movies, these additional keys are active: 276And when playing movies, these additional keys are active:
179 277
180 left rewind by 10 seconds 278 left rewind by 10 seconds
181 right forward by 10 seconds 279 right forward by 10 seconds
182 down rewind by 60 seconds 280 down rewind by 60 seconds
183 up forward by 60 seconds 281 up forward by 60 seconds
184 pg_up rewind by 600 seconds 282 pg_up rewind by 600 seconds
185 pg_down forward by 600 seconds 283 pg_down forward by 600 seconds
186 o toggle on-screen display 284 o toggle on-screen display
187 p pause/unpause 285 p pause/unpause
188 escape stop playing 286 escape stop playing
189 9 turn volume down 287 9 turn volume down
190 0 turn volume up 288 0 turn volume up
191 289
192The following keys are redirected to the default visual schnauzer window: 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.
193 292
194 space next image 293Left-clicking into the image window will let you crop the image (usually
195 backspace last image 294to zoom into large images that CV scales down).
196 295
197=head2 THE VISUAL SCHNAUZER 296=head2 THE VISUAL SCHNAUZER
198 297
199You can use the following keys in the schnauzer window: 298You can use the following keys in the schnauzer window:
200 299
300 ctrl-space,
201 space move to and display next image 301 space move to and display next image
302 ctrl-backspace,
202 backspace move to and display previous image 303 backspace move to and display previous image
304 ctrl-return,
203 return display selected picture 305 return display selected picture, or enter directory
204 306
205 cursor keys move selection 307 cursor keys move selection
206 page-up move one page up 308 page-up move one page up
207 page-down move one page down 309 page-down move one page down
208 home move to first file 310 home move to first file
209 end move to last file 311 end move to last file
210 312
313 ctrl-a select all files
314 ctrl-shift-a select all files currently displayed in the schnauzer window
211 ctrl-d delete selected files WITHOUT ASKING AGAIN 315 ctrl-d delete selected files WITHOUT ASKING AGAIN
212 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.
213 ctrl-u update selected (or all) icons if neccessary 318 ctrl-u update selected (or all) icons if neccessary
214 ctrl-a select all files 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=head3 SELECTION
330
331You can select entries in the Schnauzer in a variety of ways:
332
333=over 4
334
335=item Keyboard
336
337Moving the cursor with the keyboard will first deselect all files and then
338select the file you moved to.
339
340=item Clicking
341
342Clicking on an entry will select the one you clicked and deselect all
343others.
344
345=item Shift-Clicking
346
347Shift-clicking will toggle the selection on the entry under the mouse.
348
349=item Dragging
350
351Dragging will select all entries between the one selected when pushing the
352button and the one selected when releasing the button. If you move above
353or below the schnauzer area while drag-selecting, the schnauzer will move
354up/down one row twice per second. In addition, horizontal mouse movement
355acts as a kind of invisible horizontal scrollbar.
356
357=item Hint: double-click works while click-selecting
358
359You can double-click any image while click-selecting to display it
360without stopping the selection process. This will act as if you normally
361double-clicked the image to display it, and will toggle the selection
362twice, resulting in no change.
363
364=back
365
366=head1 FILES
367
368When starting, CV runs the F<.cvrc> file in your F<$HOME> directory as if
369it were a perl script. in that, you will mostly load plug-ins.
370
371Example:
372
373 system "fping -q -t 10 ether"
374 or require "/fs/cv/cvplugin.pl";
375
376This will load a plug-in, but only if the machine I<ether> is reachable
377(supposedly the plug-in is networked in some way :).
215 378
216=head1 ENVIRONMENT 379=head1 ENVIRONMENT
217 380
218=over 4 381=over 4
219 382
… …
233 396
234=back 397=back
235 398
236=head1 SECURITY CONSIDERATIONS 399=head1 SECURITY CONSIDERATIONS
237 400
238CV uses Pixbuf to load images. Pixbuf is not considered safe for this 401CV uses Pixbuf to load non-JPEG images. Pixbuf is not considered safe for
239purpose, though (from the gtk-2.2 release notes): 402this purpose, though (from the gtk-2.2 release notes):
240 403
241"While efforts have been made to make gdk-pixbuf robust against invalid 404"While efforts have been made to make gdk-pixbuf robust against invalid
242images, using gdk-pixbuf to load untrusted data is not recommended, due to 405images, using gdk-pixbuf to load untrusted data is not recommended, due to
243the likelyhood that there are additional problems where an invalid image 406the likelyhood that there are additional problems where an invalid image
244could cause gdk-pixbuf to crash or worse." 407could cause gdk-pixbuf to crash or worse."
245 408
246=head1 BUGS/TODO 409=head1 BUGS/TODO
247 410
411 Lots of functionality is missing.
412
248 Pixbuf doesn't honor G_BROKEN_FILENAMES, so accessing files with names 413 Pixbuf doesn't always honor G_BROKEN_FILENAMES, so accessing files with
249 incompatible with utf-8 fails. 414 names incompatible with utf-8 might fail.
250 415
251 rotate on disk 416 rotate on disk
252 print
253 lots of ui issues 417 lots of ui issues
254 save(?) 418 save(?)
255 preferences 419 preferences
256 ctrl-u in schnauzer
257 shift-cursor in schnauzer
258 420
259=head1 AUTHOR 421=head1 AUTHOR
260 422
261Marc Lehmann <cv@plan9.de>. 423Marc Lehmann <cv@plan9.de>.
262 424

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