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Revision 1.46 by root, Sun Jul 17 05:01:30 2005 UTC vs.
Revision 1.47 by root, Wed Jul 20 09:06:37 2005 UTC

… …
140 140
141__DATA__ 141__DATA__
142 142
143=head1 NAME 143=head1 NAME
144 144
145cv - a fast gtk+ image viewer modeled after xv 145cv - a fast gtk+ image viewer loosely modeled after XV
146 146
147=head1 SYNOPSIS 147=head1 SYNOPSIS
148 148
149 cv [file...] 149 cv [file...]
150 150
151=head1 FEATURES
152
153CV is supposed to work similar to the venerable XV image viewer, just
154faster. Why faster?
155
156=over 4
157
158=item * optimized directory scanning algorithm
159
160The directory scanning in CV plays some tricks that - on most modern
161filesystems - makes it possible to detect filetypes faster than stat()'ing
162every file. This makes CV suitable for directories with lots of files
163(10000+).
164
165This algorithm is quite unprecise - it doesn't make a difference between
166files, device nodes, symlinks and the like, and filetype detection is done
167using the file extension only.
168
169=item * use of asynchronous I/O
170
171CV tries to use asynchronous I/O whereever it makes sense, for example
172while scanning directories, waiting for stat data or unlinking files. This
173usually decreases scanning times for large directories a bit (especially
174on RAID devices and over NFS).
175
176=item * fast image loading
177
178The time span between the user issuing a command and displaying the new
179image should be as small as possible. CV uses optimized (especially
180for JPEG) loading functions and sacrifices some quality (e.g no gamma
181correction) to achieve this speed.
182
183=item * fast thumbnail creation
184
185Thumbnail creation is crucial for me, so it's better be fast. Thumbnail
186creation for JPEGs has been specially optimized.
187
188=item * minimum optical clutter
189
190CV has no menus or other user interface elements that take up a lot of
191screen space. The schnauzer windows can also be somewhat crowded.
192
193The point of an image viewer is viewing images, not a nice GUI. This is
194similar to XV's behaviour.
195
196=item * efficient (and hard to learn) user interface
197
198CV 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
200first, but will be an efficient tool later.
201
202=item * i18n'ed filename handling throughout
203
204As long as glib can recognize your filename encoding (either UTF-8 or
205locale-specific, depending on your settings) and you have the relevant
206fonts, CV will display your filenames correctly.
207
208=item * extensible through plug-ins
209
210I 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,
212others might have weird requirements I cannot dream of.
213
214=item * filename clustering
215
216Among the standard plug-ins is a filename clustering plug-in, that (in
217case of tens of thousands images in one directory) might be able to
218cluster similar names together.
219
220=back
221
151=head1 DESCRIPTION 222=head1 DESCRIPTION
152
153None yet.
154 223
155=head2 THE IMAGE WINDOW 224=head2 THE IMAGE WINDOW
156 225
157You can use the following keys in the image window: 226You can use the following keys in the image window:
158 227
… …
161 > double the image size 230 > double the image size
162 , shrink the image by 10% 231 , shrink the image by 10%
163 . enlarge the image by 10% 232 . enlarge the image by 10%
164 n reset to normal size 233 n reset to normal size
165 m maximize to screensize 234 m maximize to screensize
166 M maxime to screensize, respecting image aspect 235 M maximize to screensize, respecting image aspect
167 ctrl-m toggle maxpect-always mode 236 ctrl-m toggle maxpect-always mode
168 u uncrop 237 u uncrop
169 r set scaling mode to 'nearest' (fastest) 238 r set scaling mode to 'nearest' (fastest)
170 s set scaling mode to 'bilinear' (default) 239 s set scaling mode to 'bilinear' (default)
171 S set scaling mode to 'hyper' (slowest) 240 shift-s set scaling mode to 'hyper' (slowest)
172 t rotate clockwise 90° 241 t rotate clockwise 90°
173 T rotate counterclockwise° 242 T rotate counterclockwise°
174 ctrl-v open a new visual schnauzer window for the current dir 243 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 ($CV_EDITOR or "gimp") on the current image. 244 ctrl-e run an editor ($CV_EDITOR or "gimp") on the current image
245 ctrl-p fire up the print fialog
246 escape cancel a crop action
177 247
178And when playing movies, these additional keys are active: 248And when playing movies, these additional keys are active:
179 249
180 left rewind by 10 seconds 250 left rewind by 10 seconds
181 right forward by 10 seconds 251 right forward by 10 seconds
… …
187 p pause/unpause 257 p pause/unpause
188 escape stop playing 258 escape stop playing
189 9 turn volume down 259 9 turn volume down
190 0 turn volume up 260 0 turn volume up
191 261
192The following keys are redirected to the default visual schnauzer window: 262Any other keys will be sent to the default schnauzer window, which can be
263toggled on and off by right-clicking into the image window.
193 264
194 space next image 265Left-clicking into the image window will let you crop the image (usually
195 backspace last image 266to zoom into large images that CV scales down).
196 267
197=head2 THE VISUAL SCHNAUZER 268=head2 THE VISUAL SCHNAUZER
198 269
199You can use the following keys in the schnauzer window: 270You can use the following keys in the schnauzer window:
200 271
272 ctrl-space,
201 space move to and display next image 273 space move to and display next image
274 ctrl-backspace,
202 backspace move to and display previous image 275 backspace move to and display previous image
276 ctrl-return,
203 return display selected picture 277 return display selected picture, or enter directory
204 278
205 cursor keys move selection 279 cursor keys move selection
206 page-up move one page up 280 page-up move one page up
207 page-down move one page down 281 page-down move one page down
208 home move to first file 282 home move to first file
209 end move to last file 283 end move to last file
210 284
285 ctrl-a select all files
211 ctrl-d delete selected files WITHOUT ASKING AGAIN 286 ctrl-d delete selected files WITHOUT ASKING AGAIN
212 ctrl-g generate icons for the selected files 287 ctrl-g force generation of thumbnais for the selected files
288 ctrl-s rescan current direcory or files updates/deletes etc.
213 ctrl-u update selected (or all) icons if neccessary 289 ctrl-u update selected (or all) icons if neccessary
214 ctrl-a select all files 290 ctrl-l don't use, will become a plug-in eventually
291
292 0-9,
293 a-z find the first filename beginning with this letter
294
295Right-clicking into the schnauzer window displays a pop-up menu with
296additional actions.
297
298=head1 FILES
299
300When 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.
302
303Example:
304
305 system "fping -q -t 10 ether"
306 or require "/fs/cv/cvplugin.pl";
307
308This will load a plug-in, but only if the machine I<ether> is reachable
309(supposedly the plug-in is networked in some way :).
215 310
216=head1 ENVIRONMENT 311=head1 ENVIRONMENT
217 312
218=over 4 313=over 4
219 314
… …
243the likelyhood that there are additional problems where an invalid image 338the likelyhood that there are additional problems where an invalid image
244could cause gdk-pixbuf to crash or worse." 339could cause gdk-pixbuf to crash or worse."
245 340
246=head1 BUGS/TODO 341=head1 BUGS/TODO
247 342
343 Lots of functionality is missing.
344
248 Pixbuf doesn't honor G_BROKEN_FILENAMES, so accessing files with names 345 Pixbuf doesn't always honor G_BROKEN_FILENAMES, so accessing files with
249 incompatible with utf-8 fails. 346 names incompatible might utf-8 fail.
250 347
251 rotate on disk 348 rotate on disk
252 print
253 lots of ui issues 349 lots of ui issues
254 save(?) 350 save(?)
255 preferences 351 preferences
256 ctrl-u in schnauzer
257 shift-cursor in schnauzer 352 shift-cursor in schnauzer
258 353
259=head1 AUTHOR 354=head1 AUTHOR
260 355
261Marc Lehmann <cv@plan9.de>. 356Marc Lehmann <cv@plan9.de>.

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