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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 1.56 by root, Mon Aug 22 03:33:33 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;
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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;
… …
155 160
156=over 4 161=over 4
157 162
158=item * optimized directory scanning algorithm 163=item * optimized directory scanning algorithm
159 164
160The directory scanning in CV plays some tricks that - on most modern 165The directory scanning in CV uses some tricks that - on most modern
161filesystems - makes it possible to detect filetypes faster than stat()'ing 166filesystems - makes it possible to detect filetypes faster than stat()'ing
162every file. This makes CV suitable for directories with lots of files 167every file. This makes CV suitable for directories with lots of files
163(10000+). 168(10000+).
164 169
165This algorithm is quite unprecise - it doesn't make a difference between 170This algorithm is quite unprecise - it doesn't make a difference between
166files, device nodes, symlinks and the like, and filetype detection is done 171files, device nodes, symlinks and the like, and filetype detection is done
167using the file extension only. 172using the file extension only.
168 173
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
169=item * use of asynchronous I/O 184=item * use of asynchronous I/O
170 185
171CV tries to use asynchronous I/O whereever it makes sense, for example 186CV tries to use asynchronous I/O whereever it makes sense, for example
172while scanning directories, waiting for stat data or unlinking files. This 187while scanning directories, waiting for stat data, unlinking files or
173usually decreases scanning times for large directories a bit (especially 188generating thumbnails. This usually decreases scanning times for large
174on RAID devices and over NFS). 189directories a bit (especially on RAID devices and over NFS) and makes CV
190much more interactive.
175 191
176=item * fast image loading 192=item * fast image loading
177 193
178The time span between the user issuing a command and displaying the new 194The time span between the user issuing a command and displaying the new
179image should be as small as possible. CV uses optimized (especially 195image should be as small as possible. CV uses optimized (especially
180for JPEG) loading functions and sacrifices some quality (e.g no gamma 196for JPEG) loading functions and sacrifices some quality (e.g no gamma
181correction) to achieve this speed. 197correction, although this might change) to achieve this speed.
182 198
183=item * fast thumbnail creation 199=item * fast thumbnail creation
184 200
185Thumbnail creation is crucial for me, so it's better be fast. Thumbnail 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
186creation for JPEGs has been specially optimized. 203creation for JPEGs has been specially optimized and can even take
204advantage of multiple CPUs.
187 205
188=item * minimum optical clutter 206=item * minimum optical clutter
189 207
190CV has no menus or other user interface elements that take up a lot of 208CV has no menus or other user interface elements that take up a lot of
191screen space. The schnauzer windows can also be somewhat crowded. 209screen space (or are useful for beginning users). The schnauzer windows
210can also be somewhat crowded.
192 211
193The point of an image viewer is viewing images, not a nice GUI. This is 212The point of an image viewer is viewing images, not a nice GUI. This is
194similar to XV's behaviour. 213similar to XV's behaviour.
195 214
196=item * efficient (and hard to learn) user interface 215=item * efficient (and hard to learn) user interface
197 216
198CV uses key combinations. A lot. If you are an experienced XV user, you 217CV 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 218will find most of these keys familiar. If not, CV might be hard to use at
200first, but will be an efficient tool later. 219first, but will be an efficient tool later.
201 220
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
202=item * i18n'ed filename handling throughout 227=item * i18n'ed filename handling throughout
203 228
204As long as glib can recognize your filename encoding (either UTF-8 or 229As long as glib can recognize your filename encoding (either UTF-8 or
205locale-specific, depending on your settings) and you have the relevant 230locale-specific, depending on the setting of G_BROKEN_FILENAMES) and you
206fonts, CV will display your filenames correctly. 231have the relevant fonts, CV will display your filenames correctly.
207 232
208=item * extensible through plug-ins 233=item * extensible through plug-ins
209 234
210I have weird plug-ins that access remote databases to find a 235I 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, 236directory. This is not likely to be of any use to other people. Likewise,
… …
223 248
224=head2 THE IMAGE WINDOW 249=head2 THE IMAGE WINDOW
225 250
226You can use the following keys in the image window: 251You can use the following keys in the image window:
227 252
228 q quit the program 253 q quit the program
229 < half the image size 254 < half the image size
230 > double the image size 255 > double the image size
231 , shrink the image by 10% 256 , shrink the image by 10%
232 . enlarge the image by 10% 257 . enlarge the image by 10%
233 n reset to normal size 258 n reset to normal size
234 m maximize to screensize 259 m maximize to screensize
235 M maximize to screensize, respecting image aspect 260 M maximize to screensize, respecting image aspect
236 ctrl-m toggle maxpect-always mode 261 ctrl-m toggle maxpect-always mode
237 u uncrop 262 u uncrop
238 r set scaling mode to 'nearest' (fastest) 263 r set scaling mode to 'nearest' (fastest)
239 s set scaling mode to 'bilinear' (default) 264 s set scaling mode to 'bilinear' (default)
240 shift-s set scaling mode to 'hyper' (slowest) 265 shift-s set scaling mode to 'hyper' (slowest)
241 t rotate clockwise 90° 266 t rotate clockwise 90°
242 T rotate counterclockwise° 267 T rotate counterclockwise°
243 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
244 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
245 ctrl-p fire up the print fialog 270 ctrl-p fire up the print fialog
246 escape cancel a crop action 271 escape cancel a crop action
247 272
248And when playing movies, these additional keys are active: 273And when playing movies, these additional keys are active:
249 274
250 left rewind by 10 seconds 275 left rewind by 10 seconds
251 right forward by 10 seconds 276 right forward by 10 seconds
252 down rewind by 60 seconds 277 down rewind by 60 seconds
253 up forward by 60 seconds 278 up forward by 60 seconds
254 pg_up rewind by 600 seconds 279 pg_up rewind by 600 seconds
255 pg_down forward by 600 seconds 280 pg_down forward by 600 seconds
256 o toggle on-screen display 281 o toggle on-screen display
257 p pause/unpause 282 p pause/unpause
258 escape stop playing 283 escape stop playing
259 9 turn volume down 284 9 turn volume down
260 0 turn volume up 285 0 turn volume up
261 286
262Any other keys will be sent to the default schnauzer window, which can be 287Any other keys will be sent to the default schnauzer window, which can be
263toggled on and off by right-clicking into the image window. 288toggled on and off by right-clicking into the image window.
264 289
265Left-clicking into the image window will let you crop the image (usually 290Left-clicking into the image window will let you crop the image (usually
… …
268=head2 THE VISUAL SCHNAUZER 293=head2 THE VISUAL SCHNAUZER
269 294
270You can use the following keys in the schnauzer window: 295You can use the following keys in the schnauzer window:
271 296
272 ctrl-space, 297 ctrl-space,
273 space move to and display next image 298 space move to and display next image
274 ctrl-backspace, 299 ctrl-backspace,
275 backspace move to and display previous image 300 backspace move to and display previous image
276 ctrl-return, 301 ctrl-return,
277 return display selected picture, or enter directory 302 return display selected picture, or enter directory
278 303
279 cursor keys move selection 304 cursor keys move selection
280 page-up move one page up 305 page-up move one page up
281 page-down move one page down 306 page-down move one page down
282 home move to first file 307 home move to first file
283 end move to last file 308 end move to last file
284 309
285 ctrl-a select all files 310 ctrl-a select all files
311 ctrl-shift-a select all files currently displayed in the schnauzer window
286 ctrl-d delete selected files WITHOUT ASKING AGAIN 312 ctrl-d delete selected files WITHOUT ASKING AGAIN
287 ctrl-g force generation of thumbnais for the selected files 313 ctrl-g force generation of thumbnais for the selected files
288 ctrl-s rescan current direcory or files updates/deletes etc. 314 ctrl-s rescan current direcory or files updates/deletes etc.
289 ctrl-u update selected (or all) icons if neccessary 315 ctrl-u update selected (or all) icons if neccessary
290 ctrl-l don't use, will become a plug-in eventually 316 ctrl-l don't use, will become a plug-in eventually
317
318 ^ go to parent directory (caret).
291 319
292 0-9, 320 0-9,
293 a-z find the first filename beginning with this letter 321 a-z find the first filename beginning with this letter
294 322
295Right-clicking into the schnauzer window displays a pop-up menu with 323Right-clicking into the schnauzer window displays a pop-up menu with
296additional actions. 324additional actions.
297 325
298=head1 FILES 326=head1 FILES
… …
328 356
329=back 357=back
330 358
331=head1 SECURITY CONSIDERATIONS 359=head1 SECURITY CONSIDERATIONS
332 360
333CV 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
334purpose, though (from the gtk-2.2 release notes): 362this purpose, though (from the gtk-2.2 release notes):
335 363
336"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
337images, 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
338the likelyhood that there are additional problems where an invalid image 366the likelyhood that there are additional problems where an invalid image
339could cause gdk-pixbuf to crash or worse." 367could cause gdk-pixbuf to crash or worse."
… …
341=head1 BUGS/TODO 369=head1 BUGS/TODO
342 370
343 Lots of functionality is missing. 371 Lots of functionality is missing.
344 372
345 Pixbuf doesn't always honor G_BROKEN_FILENAMES, so accessing files with 373 Pixbuf doesn't always honor G_BROKEN_FILENAMES, so accessing files with
346 names incompatible might utf-8 fail. 374 names incompatible with utf-8 might fail.
347 375
348 rotate on disk 376 rotate on disk
349 lots of ui issues 377 lots of ui issues
350 save(?) 378 save(?)
351 preferences 379 preferences
352 shift-cursor in schnauzer
353 380
354=head1 AUTHOR 381=head1 AUTHOR
355 382
356Marc Lehmann <cv@plan9.de>. 383Marc Lehmann <cv@plan9.de>.
357 384

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