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Comparing CV/bin/cv (file contents):
Revision 1.47 by root, Wed Jul 20 09:06:37 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__
147
148=encoding utf-8
142 149
143=head1 NAME 150=head1 NAME
144 151
145cv - a fast gtk+ image viewer loosely modeled after XV 152cv - a fast gtk+ image viewer loosely modeled after XV
146 153
… …
155 162
156=over 4 163=over 4
157 164
158=item * optimized directory scanning algorithm 165=item * optimized directory scanning algorithm
159 166
160The directory scanning in CV plays some tricks that - on most modern 167The directory scanning in CV uses some tricks that - on most modern
161filesystems - makes it possible to detect filetypes faster than stat()'ing 168filesystems - makes it possible to detect filetypes faster than stat()'ing
162every file. This makes CV suitable for directories with lots of files 169every file. This makes CV suitable for directories with lots of files
163(10000+). 170(10000+).
164 171
165This algorithm is quite unprecise - it doesn't make a difference between 172This algorithm is quite unprecise - it doesn't make a difference between
166files, device nodes, symlinks and the like, and filetype detection is done 173files, device nodes, symlinks and the like, and filetype detection is done
167using the file extension only. 174using the file extension only.
168 175
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
169=item * use of asynchronous I/O 186=item * use of asynchronous I/O
170 187
171CV tries to use asynchronous I/O whereever it makes sense, for example 188CV tries to use asynchronous I/O whereever it makes sense, for example
172while scanning directories, waiting for stat data or unlinking files. This 189while scanning directories, waiting for stat data, unlinking files or
173usually decreases scanning times for large directories a bit (especially 190generating thumbnails. This usually decreases scanning times for large
174on RAID devices and over NFS). 191directories a bit (especially on RAID devices and over NFS) and makes CV
192much more interactive.
175 193
176=item * fast image loading 194=item * fast image loading
177 195
178The time span between the user issuing a command and displaying the new 196The time span between the user issuing a command and displaying the new
179image should be as small as possible. CV uses optimized (especially 197image should be as small as possible. CV uses optimized (especially
180for JPEG) loading functions and sacrifices some quality (e.g no gamma 198for JPEG) loading functions and sacrifices some quality (e.g no gamma
181correction) to achieve this speed. 199correction, although this might change) to achieve this speed.
182 200
183=item * fast thumbnail creation 201=item * fast thumbnail creation
184 202
185Thumbnail creation is crucial for me, so it's better be fast. Thumbnail 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
186creation for JPEGs has been specially optimized. 205creation for JPEGs has been specially optimized and can even take
206advantage of multiple CPUs.
187 207
188=item * minimum optical clutter 208=item * minimum optical clutter
189 209
190CV has no menus or other user interface elements that take up a lot of 210CV has no menus or other user interface elements that take up a lot of
191screen space. The schnauzer windows can also be somewhat crowded. 211screen space (or are useful for beginning users). The schnauzer windows
212can also be somewhat crowded.
192 213
193The point of an image viewer is viewing images, not a nice GUI. This is 214The point of an image viewer is viewing images, not a nice GUI. This is
194similar to XV's behaviour. 215similar to XV's behaviour.
195 216
196=item * efficient (and hard to learn) user interface 217=item * efficient (and hard to learn) user interface
197 218
198CV uses key combinations. A lot. If you are an experienced XV user, you 219CV uses key combinations. A lot. If you are an experienced XV user, you
199will find most of these keys familiar. If not, CV might be hard to use at 220will find most of these keys familiar. If not, CV might be hard to use at
200first, but will be an efficient tool later. 221first, but will be an efficient tool later.
201 222
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
202=item * i18n'ed filename handling throughout 229=item * i18n'ed filename handling throughout
203 230
204As long as glib can recognize your filename encoding (either UTF-8 or 231As long as glib can recognize your filename encoding (either UTF-8 or
205locale-specific, depending on your settings) and you have the relevant 232locale-specific, depending on the setting of G_BROKEN_FILENAMES) and you
206fonts, CV will display your filenames correctly. 233have the relevant fonts, CV will display your filenames correctly.
207 234
208=item * extensible through plug-ins 235=item * extensible through plug-ins
209 236
210I have weird plug-ins that access remote databases to find a 237I have weird plug-ins that access remote databases to find a
211directory. This is not likely to be of any use to other people. Likewise, 238directory. This is not likely to be of any use to other people. Likewise,
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223 250
224=head2 THE IMAGE WINDOW 251=head2 THE IMAGE WINDOW
225 252
226You can use the following keys in the image window: 253You can use the following keys in the image window:
227 254
228 q quit the program 255 q quit the program
229 < half the image size 256 < half the image size
230 > double the image size 257 > double the image size
231 , shrink the image by 10% 258 , shrink the image by 10%
232 . enlarge the image by 10% 259 . enlarge the image by 10%
233 n reset to normal size 260 n reset to normal size
234 m maximize to screensize 261 m maximize to screensize
235 M maximize to screensize, respecting image aspect 262 M maximize to screensize, respecting image aspect
236 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
237 u uncrop 265 u uncrop
238 r set scaling mode to 'nearest' (fastest) 266 r set scaling mode to 'nearest' (fastest)
239 s set scaling mode to 'bilinear' (default) 267 s set scaling mode to 'bilinear' (default)
240 shift-s set scaling mode to 'hyper' (slowest) 268 shift-s set scaling mode to 'hyper' (slowest)
241 t rotate clockwise 90° 269 t rotate clockwise 90°
242 T rotate counterclockwise° 270 T rotate counterclockwise°
243 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
244 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
245 ctrl-p fire up the print fialog 273 ctrl-p fire up the print dialog
246 escape cancel a crop action 274 escape cancel a crop action
247 275
248And when playing movies, these additional keys are active: 276And when playing movies, these additional keys are active:
249 277
250 left rewind by 10 seconds 278 left rewind by 10 seconds
251 right forward by 10 seconds 279 right forward by 10 seconds
252 down rewind by 60 seconds 280 down rewind by 60 seconds
253 up forward by 60 seconds 281 up forward by 60 seconds
254 pg_up rewind by 600 seconds 282 pg_up rewind by 600 seconds
255 pg_down forward by 600 seconds 283 pg_down forward by 600 seconds
256 o toggle on-screen display 284 o toggle on-screen display
257 p pause/unpause 285 p pause/unpause
258 escape stop playing 286 escape stop playing
259 9 turn volume down 287 9 turn volume down
260 0 turn volume up 288 0 turn volume up
261 289
262Any other keys will be sent to the default schnauzer window, which can be 290Any other keys will be sent to the default schnauzer window, which can be
263toggled on and off by right-clicking into the image window. 291toggled on and off by right-clicking into the image window.
264 292
265Left-clicking into the image window will let you crop the image (usually 293Left-clicking into the image window will let you crop the image (usually
… …
268=head2 THE VISUAL SCHNAUZER 296=head2 THE VISUAL SCHNAUZER
269 297
270You can use the following keys in the schnauzer window: 298You can use the following keys in the schnauzer window:
271 299
272 ctrl-space, 300 ctrl-space,
273 space move to and display next image 301 space move to and display next image
274 ctrl-backspace, 302 ctrl-backspace,
275 backspace move to and display previous image 303 backspace move to and display previous image
276 ctrl-return, 304 ctrl-return,
277 return display selected picture, or enter directory 305 return display selected picture, or enter directory
278 306
279 cursor keys move selection 307 cursor keys move selection
280 page-up move one page up 308 page-up move one page up
281 page-down move one page down 309 page-down move one page down
282 home move to first file 310 home move to first file
283 end move to last file 311 end move to last file
284 312
285 ctrl-a select all files 313 ctrl-a select all files
314 ctrl-shift-a select all files currently displayed in the schnauzer window
286 ctrl-d delete selected files WITHOUT ASKING AGAIN 315 ctrl-d delete selected files WITHOUT ASKING AGAIN
287 ctrl-g force generation of thumbnais for the selected files 316 ctrl-g force generation of thumbnais for the selected files
288 ctrl-s rescan current direcory or files updates/deletes etc. 317 ctrl-s rescan current direcory or files updates/deletes etc.
289 ctrl-u update selected (or all) icons if neccessary 318 ctrl-u update selected (or all) icons if neccessary
290 ctrl-l don't use, will become a plug-in eventually 319 ctrl-l don't use, will become a plug-in eventually
320
321 ^ go to parent directory (caret).
291 322
292 0-9, 323 0-9,
293 a-z find the first filename beginning with this letter 324 a-z find the first filename beginning with this letter
294 325
295Right-clicking into the schnauzer window displays a pop-up menu with 326Right-clicking into the schnauzer window displays a pop-up menu with
296additional actions. 327additional actions.
297 328
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
298=head1 FILES 366=head1 FILES
299 367
300When starting, CV runs the F<.cvrc> file in your F<$HOME> directory as if 368When starting, CV runs the F<.cvrc> file in your F<$HOME> directory as if
301it were a perl script. in that, you will mostly load plug-ins. 369it were a perl script. in that, you will mostly load plug-ins.
302 370
… …
328 396
329=back 397=back
330 398
331=head1 SECURITY CONSIDERATIONS 399=head1 SECURITY CONSIDERATIONS
332 400
333CV 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
334purpose, though (from the gtk-2.2 release notes): 402this purpose, though (from the gtk-2.2 release notes):
335 403
336"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
337images, 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
338the likelyhood that there are additional problems where an invalid image 406the likelyhood that there are additional problems where an invalid image
339could cause gdk-pixbuf to crash or worse." 407could cause gdk-pixbuf to crash or worse."
… …
341=head1 BUGS/TODO 409=head1 BUGS/TODO
342 410
343 Lots of functionality is missing. 411 Lots of functionality is missing.
344 412
345 Pixbuf doesn't always honor G_BROKEN_FILENAMES, so accessing files with 413 Pixbuf doesn't always honor G_BROKEN_FILENAMES, so accessing files with
346 names incompatible might utf-8 fail. 414 names incompatible with utf-8 might fail.
347 415
348 rotate on disk 416 rotate on disk
349 lots of ui issues 417 lots of ui issues
350 save(?) 418 save(?)
351 preferences 419 preferences
352 shift-cursor in schnauzer
353 420
354=head1 AUTHOR 421=head1 AUTHOR
355 422
356Marc Lehmann <cv@plan9.de>. 423Marc Lehmann <cv@plan9.de>.
357 424

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