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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 1.55 by root, Mon Aug 22 00:30:58 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
143=head1 NAME 148=head1 NAME
144 149
145cv - a fast gtk+ image viewer modeled after xv 150cv - a fast gtk+ image viewer loosely modeled after XV
146 151
147=head1 SYNOPSIS 152=head1 SYNOPSIS
148 153
149 cv [file...] 154 cv [file...]
150 155
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
151=head1 DESCRIPTION 247=head1 DESCRIPTION
152 248
153None yet.
154
155=head2 THE IMAGE WINDOW 249=head2 THE IMAGE WINDOW
156 250
157You can use the following keys in the image window: 251You can use the following keys in the image window:
158 252
159 q quit the program 253 q quit the program
160 < half the image size 254 < half the image size
161 > double the image size 255 > double the image size
162 , shrink the image by 10% 256 , shrink the image by 10%
163 . enlarge the image by 10% 257 . enlarge the image by 10%
164 n reset to normal size 258 n reset to normal size
165 m maximize to screensize 259 m maximize to screensize
166 M maxime to screensize, respecting image aspect 260 M maximize to screensize, respecting image aspect
167 ctrl-m toggle maxpect-always mode 261 ctrl-m toggle maxpect-always mode
168 u uncrop 262 u uncrop
169 r set scaling mode to 'nearest' (fastest) 263 r set scaling mode to 'nearest' (fastest)
170 s set scaling mode to 'bilinear' (default) 264 s set scaling mode to 'bilinear' (default)
171 S set scaling mode to 'hyper' (slowest) 265 shift-s set scaling mode to 'hyper' (slowest)
172 t rotate clockwise 90° 266 t rotate clockwise 90°
173 T rotate counterclockwise° 267 T rotate counterclockwise°
174 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
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. 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
177 272
178And when playing movies, these additional keys are active: 273And when playing movies, these additional keys are active:
179 274
180 left rewind by 10 seconds 275 left rewind by 10 seconds
181 right forward by 10 seconds 276 right forward by 10 seconds
182 down rewind by 60 seconds 277 down rewind by 60 seconds
183 up forward by 60 seconds 278 up forward by 60 seconds
184 pg_up rewind by 600 seconds 279 pg_up rewind by 600 seconds
185 pg_down forward by 600 seconds 280 pg_down forward by 600 seconds
186 o toggle on-screen display 281 o toggle on-screen display
187 p pause/unpause 282 p pause/unpause
188 escape stop playing 283 escape stop playing
189 9 turn volume down 284 9 turn volume down
190 0 turn volume up 285 0 turn volume up
191 286
192The following keys are redirected to the default visual schnauzer window: 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.
193 289
194 space next image 290Left-clicking into the image window will let you crop the image (usually
195 backspace last image 291to zoom into large images that CV scales down).
196 292
197=head2 THE VISUAL SCHNAUZER 293=head2 THE VISUAL SCHNAUZER
198 294
199You can use the following keys in the schnauzer window: 295You can use the following keys in the schnauzer window:
200 296
297 ctrl-space,
201 space move to and display next image 298 space move to and display next image
299 ctrl-backspace,
202 backspace move to and display previous image 300 backspace move to and display previous image
301 ctrl-return,
203 return display selected picture 302 return display selected picture, or enter directory
204 303
205 cursor keys move selection 304 cursor keys move selection
206 page-up move one page up 305 page-up move one page up
207 page-down move one page down 306 page-down move one page down
208 home move to first file 307 home move to first file
209 end move to last file 308 end move to last file
210 309
310 ctrl-a select all files
311 ctrl-shift-a select all files currently displayed in the schnauzer window
211 ctrl-d delete selected files WITHOUT ASKING AGAIN 312 ctrl-d delete selected files WITHOUT ASKING AGAIN
212 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.
213 ctrl-u update selected (or all) icons if neccessary 315 ctrl-u update selected (or all) icons if neccessary
214 ctrl-a select all files 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 :).
215 336
216=head1 ENVIRONMENT 337=head1 ENVIRONMENT
217 338
218=over 4 339=over 4
219 340
… …
233 354
234=back 355=back
235 356
236=head1 SECURITY CONSIDERATIONS 357=head1 SECURITY CONSIDERATIONS
237 358
238CV 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
239purpose, though (from the gtk-2.2 release notes): 360this purpose, though (from the gtk-2.2 release notes):
240 361
241"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
242images, 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
243the likelyhood that there are additional problems where an invalid image 364the likelyhood that there are additional problems where an invalid image
244could cause gdk-pixbuf to crash or worse." 365could cause gdk-pixbuf to crash or worse."
245 366
246=head1 BUGS/TODO 367=head1 BUGS/TODO
247 368
369 Lots of functionality is missing.
370
248 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
249 incompatible with utf-8 fails. 372 names incompatible with utf-8 might fail.
250 373
251 rotate on disk 374 rotate on disk
252 print
253 lots of ui issues 375 lots of ui issues
254 save(?) 376 save(?)
255 preferences 377 preferences
256 ctrl-u in schnauzer
257 shift-cursor in schnauzer
258 378
259=head1 AUTHOR 379=head1 AUTHOR
260 380
261Marc Lehmann <cv@plan9.de>. 381Marc Lehmann <cv@plan9.de>.
262 382

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