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Comparing CV/bin/cv (file contents):
Revision 1.40 by root, Mon Jun 27 18:25:50 2005 UTC vs.
Revision 1.58 by root, Wed Sep 7 20:17:25 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 $info;
… …
35 (File::Spec->splitpath ($_[1]))[2], 40 (File::Spec->splitpath ($_[1]))[2],
36 -s $_[1]; 41 -s $_[1];
37 $info->set_label ($label); 42 $info->set_label ($label);
38 $viewer->load_image ($_[1]); 43 $viewer->load_image ($_[1]);
39 }); 44 });
40 $s->signal_connect (chdir => sub {
41 my ($self, $dir) = @_;
42
43 my $path = Cwd::abs_path $dir;
44
45 $self->realize;
46 $self->window->property_change (
47 Gtk2::Gdk::Atom->intern ("_X_CWD", 0),
48 Gtk2::Gdk::Atom->intern ("UTF8_STRING", 0),
49 Gtk2::Gdk::CHARS, 'replace',
50 Encode::encode_utf8 $path,
51 );
52 });
53 45
54 Gtk2::CV::Plugin->call (new_schnauzer => $s); 46 Gtk2::CV::Plugin->call (new_schnauzer => $s);
55 47
56 $s; 48 $s
57} 49}
58 50
59sub std_keys { 51sub std_keys {
60 my $key = $_[1]->keyval; 52 my $key = $_[1]->keyval;
61 my $state = $_[1]->state; 53 my $state = $_[1]->state;
… …
89 $h->load_string (do { local $/; <DATA> }); 81 $h->load_string (do { local $/; <DATA> });
90 } 82 }
91 83
92 $help->show_all; 84 $help->show_all;
93 } else { 85 } else {
94 #$mainwin->show_all; 86 return 0;
95 $schnauzer->handle_key ($key, $state);
96 } 87 }
97 88
98 1; 89 1
99} 90}
100 91
101{ 92{
102 $viewer = new Gtk2::CV::ImageWindow; 93 $viewer = new Gtk2::CV::ImageWindow;
103 94
104 $viewer->set_title ("CV: Image"); 95 $viewer->set_title ("CV: Image");
105 96
106 $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 });
107 $viewer->signal_connect (delete_event => sub { main_quit Gtk2 }); 101 $viewer->signal_connect (delete_event => sub { main_quit Gtk2 });
108 102
109 $viewer->signal_connect (button3_press_event => sub { 103 $viewer->signal_connect (button3_press_event => sub {
110 $mainwin->visible 104 $mainwin->visible
111 ? $mainwin->hide 105 ? $mainwin->hide
112 : $mainwin->show_all; 106 : $mainwin->show_all;
113 1; 107 1
114 }); 108 });
115 109
116 Gtk2::CV::Plugin->call (new_imagewindow => $viewer); 110 Gtk2::CV::Plugin->call (new_imagewindow => $viewer);
117 111
118 $schnauzer = new_schnauzer; 112 $schnauzer = new_schnauzer;
119 113
120 $mainwin = new Gtk2::Window; 114 $mainwin = new Gtk2::Window;
121 $mainwin->set_title ("CV"); 115 $mainwin->set_title ("CV");
122 $mainwin->add (my $vbox = new Gtk2::VBox); 116 $mainwin->add (my $vbox = new Gtk2::VBox);
123 $mainwin->signal_connect (delete_event => sub { $mainwin->hide; 1; }); 117 $mainwin->signal_connect (delete_event => sub { $mainwin->hide; 1 });
124 118
125 $vbox->add ($schnauzer); 119 $vbox->add ($schnauzer);
126 $vbox->pack_end (my $frame = new Gtk2::Frame, 0, 0, 0); 120 $vbox->pack_end (my $frame = new Gtk2::Frame, 0, 0, 0);
127 $frame->add (my $hbox = new Gtk2::HBox 0, 0); 121 $frame->add (my $hbox = new Gtk2::HBox 0, 0);
128 $hbox->pack_start ((new Gtk2::Label "Info"), 0, 0, 0); 122 $hbox->pack_start ((new Gtk2::Label "Info: "), 0, 0, 0);
129 $hbox->pack_start (($info = new Gtk2::Label), 1, 1, 0); 123 $hbox->pack_end (my $labelwindow = new Gtk2::EventBox, 1, 1, 0);
130 $info->set (wrap => 1); 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");
131 127
132 $schnauzer->set_geometry_hints; 128 $schnauzer->set_geometry_hints;
133} 129}
134 130
135if (@ARGV) { 131if (@ARGV) {
132 @ARGV == 1 && -d $ARGV[0]
133 ? $schnauzer->set_dir (Glib::filename_to_unicode shift)
136 $schnauzer->set_paths ([map Glib::filename_to_unicode $_, @ARGV]); 134 : $schnauzer->set_paths ([map Glib::filename_to_unicode $_, @ARGV]);
137 $schnauzer->show_all; 135 $schnauzer->show_all;
138 $schnauzer->handle_key ($Gtk2::Gdk::Keysyms{space}, []); 136 $schnauzer->handle_key ($Gtk2::Gdk::Keysyms{space}, []);
139} else { 137} else {
140 $schnauzer->set_dir (File::Spec->curdir); 138 $schnauzer->set_dir (File::Spec->curdir);
141 $mainwin->show_all; 139 $mainwin->show_all;
142 $viewer->show_all;
143} 140}
144 141
145$viewer->show_all; 142$viewer->show_all;
146 143
147main Gtk2; 144main Gtk2;
148 145
149__DATA__ 146__DATA__
150 147
148=encoding utf-8
149
151=head1 NAME 150=head1 NAME
152 151
153cv - a fast gtk+ image viewer modeled after xv 152cv - a fast gtk+ image viewer loosely modeled after XV
154 153
155=head1 SYNOPSIS 154=head1 SYNOPSIS
156 155
157 cv [file...] 156 cv [file...]
158 157
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
159=head1 DESCRIPTION 249=head1 DESCRIPTION
160 250
161None yet.
162
163=head2 THE IMAGE WINDOW 251=head2 THE IMAGE WINDOW
164 252
165You can use the following keys in the image window: 253You can use the following keys in the image window:
166 254
167 q quit the program 255 q quit the program
168 < half the image size 256 < half the image size
169 > double the image size 257 > double the image size
170 , shrink the image by 10% 258 , shrink the image by 10%
171 . enlarge the image by 10% 259 . enlarge the image by 10%
172 n reset to normal size 260 n reset to normal size
173 m maximize to screensize 261 m maximize to screensize
174 M maxime to screensize, respecting image aspect 262 M maximize to screensize, respecting image aspect
175 ctrl-m toggle maxpect-always mode 263 ctrl-m toggle maxpect-always mode
176 u uncrop 264 u uncrop
177 r set scaling mode to 'nearest' (fastest) 265 r set scaling mode to 'nearest' (fastest)
178 s set scaling mode to 'bilinear' (default) 266 s set scaling mode to 'bilinear' (default)
179 S set scaling mode to 'hyper' (slowest) 267 shift-s set scaling mode to 'hyper' (slowest)
180 t rotate clockwise 90° 268 t rotate clockwise 90°
181 T rotate counterclockwise° 269 T rotate counterclockwise°
182 ctrl-v open a new visual schnauzer window for the current dir 270 ctrl-v open a new visual schnauzer window for the current dir
183 ctrl-s rescan visual schnauzer files for updates/deletes etc.
184 ctrl-e run an editor ($CV_EDITOR or "gimp") on the current image. 271 ctrl-e run an editor ($CV_EDITOR or "gimp") on the current image
272 ctrl-p fire up the print dialog
273 escape cancel a crop action
185 274
186And when playing movies, these additional keys are active: 275And when playing movies, these additional keys are active:
187 276
188 left rewind by 10 seconds 277 left rewind by 10 seconds
189 right forward by 10 seconds 278 right forward by 10 seconds
190 down rewind by 60 seconds 279 down rewind by 60 seconds
191 up forward by 60 seconds 280 up forward by 60 seconds
192 pg_up rewind by 600 seconds 281 pg_up rewind by 600 seconds
193 pg_down forward by 600 seconds 282 pg_down forward by 600 seconds
194 o toggle on-screen display 283 o toggle on-screen display
195 p pause/unpause 284 p pause/unpause
196 escape stop playing 285 escape stop playing
197 9 turn volume down 286 9 turn volume down
198 0 turn volume up 287 0 turn volume up
199 288
200The following keys are redirected to the default visual schnauzer window: 289Any other keys will be sent to the default schnauzer window, which can be
290toggled on and off by right-clicking into the image window.
201 291
202 space next image 292Left-clicking into the image window will let you crop the image (usually
203 backspace last image 293to zoom into large images that CV scales down).
204 294
205=head2 THE VISUAL SCHNAUZER 295=head2 THE VISUAL SCHNAUZER
206 296
207You can use the following keys in the schnauzer window: 297You can use the following keys in the schnauzer window:
208 298
299 ctrl-space,
209 space move to and display next image 300 space move to and display next image
301 ctrl-backspace,
210 backspace move to and display previous image 302 backspace move to and display previous image
303 ctrl-return,
211 return display selected picture 304 return display selected picture, or enter directory
212 305
213 cursor keys move selection 306 cursor keys move selection
214 page-up move one page up 307 page-up move one page up
215 page-down move one page down 308 page-down move one page down
216 home move to first file 309 home move to first file
217 end move to last file 310 end move to last file
218 311
312 ctrl-a select all files
313 ctrl-shift-a select all files currently displayed in the schnauzer window
219 ctrl-d delete selected files WITHOUT ASKING AGAIN 314 ctrl-d delete selected files WITHOUT ASKING AGAIN
220 ctrl-g generate icons for the selected files 315 ctrl-g force generation of thumbnais for the selected files
316 ctrl-s rescan current direcory or files updates/deletes etc.
221 ctrl-u update selected (or all) icons if neccessary 317 ctrl-u update selected (or all) icons if neccessary
222 ctrl-a select all files 318 ctrl-l don't use, will become a plug-in eventually
319
320 ^ go to parent directory (caret).
321
322 0-9,
323 a-z find the first filename beginning with this letter
324
325Right-clicking into the schnauzer window displays a pop-up menu with
326additional actions.
327
328=head1 FILES
329
330When starting, CV runs the F<.cvrc> file in your F<$HOME> directory as if
331it were a perl script. in that, you will mostly load plug-ins.
332
333Example:
334
335 system "fping -q -t 10 ether"
336 or require "/fs/cv/cvplugin.pl";
337
338This will load a plug-in, but only if the machine I<ether> is reachable
339(supposedly the plug-in is networked in some way :).
223 340
224=head1 ENVIRONMENT 341=head1 ENVIRONMENT
225 342
226=over 4 343=over 4
227 344
… …
241 358
242=back 359=back
243 360
244=head1 SECURITY CONSIDERATIONS 361=head1 SECURITY CONSIDERATIONS
245 362
246CV uses Pixbuf to load images. Pixbuf is not considered safe for this 363CV uses Pixbuf to load non-JPEG images. Pixbuf is not considered safe for
247purpose, though (from the gtk-2.2 release notes): 364this purpose, though (from the gtk-2.2 release notes):
248 365
249"While efforts have been made to make gdk-pixbuf robust against invalid 366"While efforts have been made to make gdk-pixbuf robust against invalid
250images, using gdk-pixbuf to load untrusted data is not recommended, due to 367images, using gdk-pixbuf to load untrusted data is not recommended, due to
251the likelyhood that there are additional problems where an invalid image 368the likelyhood that there are additional problems where an invalid image
252could cause gdk-pixbuf to crash or worse." 369could cause gdk-pixbuf to crash or worse."
253 370
254=head1 BUGS/TODO 371=head1 BUGS/TODO
255 372
373 Lots of functionality is missing.
374
256 Pixbuf doesn't honor G_BROKEN_FILENAMES, so accessing files with names 375 Pixbuf doesn't always honor G_BROKEN_FILENAMES, so accessing files with
257 incompatible with utf-8 fails. 376 names incompatible with utf-8 might fail.
258 377
259 rotate on disk 378 rotate on disk
260 print
261 lots of ui issues 379 lots of ui issues
262 save(?) 380 save(?)
263 preferences 381 preferences
264 ctrl-u in schnauzer
265 shift-cursor in schnauzer
266 382
267=head1 AUTHOR 383=head1 AUTHOR
268 384
269Marc Lehmann <cv@plan9.de>. 385Marc Lehmann <cv@plan9.de>.
270 386

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