… | |
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143 | |
143 | |
144 | main Gtk2; |
144 | main Gtk2; |
145 | |
145 | |
146 | __DATA__ |
146 | __DATA__ |
147 | |
147 | |
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148 | =encoding utf-8 |
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149 | |
148 | =head1 NAME |
150 | =head1 NAME |
149 | |
151 | |
150 | cv - a fast gtk+ image viewer loosely modeled after XV |
152 | cv - a fast gtk+ image viewer loosely modeled after XV |
151 | |
153 | |
152 | =head1 SYNOPSIS |
154 | =head1 SYNOPSIS |
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160 | |
162 | |
161 | =over 4 |
163 | =over 4 |
162 | |
164 | |
163 | =item * optimized directory scanning algorithm |
165 | =item * optimized directory scanning algorithm |
164 | |
166 | |
165 | The directory scanning in CV plays some tricks that - on most modern |
167 | The directory scanning in CV uses some tricks that - on most modern |
166 | filesystems - makes it possible to detect filetypes faster than stat()'ing |
168 | filesystems - makes it possible to detect filetypes faster than stat()'ing |
167 | every file. This makes CV suitable for directories with lots of files |
169 | every file. This makes CV suitable for directories with lots of files |
168 | (10000+). |
170 | (10000+). |
169 | |
171 | |
170 | This algorithm is quite unprecise - it doesn't make a difference between |
172 | This algorithm is quite unprecise - it doesn't make a difference between |
171 | files, device nodes, symlinks and the like, and filetype detection is done |
173 | files, device nodes, symlinks and the like, and filetype detection is done |
172 | using the file extension only. |
174 | using the file extension only. |
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175 | |
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176 | On the positive side, it is usually many orders of magnitude faster than |
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177 | traditional scanning techniques (good for directories with 10000 or |
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178 | 100000+ files). |
173 | |
179 | |
174 | =item * queuing for all time-consuming background tasks |
180 | =item * queuing for all time-consuming background tasks |
175 | |
181 | |
176 | All tasks, such as unlinking files or generating thumbnails, that can be |
182 | All tasks, such as unlinking files or generating thumbnails, that can be |
177 | done in the background will be done so - no waiting required, even when |
183 | done in the background will be done so - no waiting required, even when |
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188 | =item * fast image loading |
194 | =item * fast image loading |
189 | |
195 | |
190 | The time span between the user issuing a command and displaying the new |
196 | The time span between the user issuing a command and displaying the new |
191 | image should be as small as possible. CV uses optimized (especially |
197 | image should be as small as possible. CV uses optimized (especially |
192 | for JPEG) loading functions and sacrifices some quality (e.g no gamma |
198 | for JPEG) loading functions and sacrifices some quality (e.g no gamma |
193 | correction) to achieve this speed. |
199 | correction, although this might change) to achieve this speed. |
194 | |
200 | |
195 | =item * fast thumbnail creation |
201 | =item * fast thumbnail creation |
196 | |
202 | |
197 | Thumbnail creation is crucial for me, so it's better be fast. Thumbnail |
203 | Thumbnail creation uses both CPU and Disk-I/O. CV interleaves both, so |
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204 | on modern CPUs, thumbnailing is usually limited by I/O speed. Thumbnail |
198 | creation for JPEGs has been specially optimized. |
205 | creation for JPEGs has been specially optimized and can even take |
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206 | advantage of multiple CPUs. |
199 | |
207 | |
200 | =item * minimum optical clutter |
208 | =item * minimum optical clutter |
201 | |
209 | |
202 | CV has no menus or other user interface elements that take up a lot of |
210 | CV has no menus or other user interface elements that take up a lot of |
203 | screen space. The schnauzer windows can also be somewhat crowded. |
211 | screen space (or are useful for beginning users). The schnauzer windows |
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212 | can also be somewhat crowded. |
204 | |
213 | |
205 | The point of an image viewer is viewing images, not a nice GUI. This is |
214 | The point of an image viewer is viewing images, not a nice GUI. This is |
206 | similar to XV's behaviour. |
215 | similar to XV's behaviour. |
207 | |
216 | |
208 | =item * efficient (and hard to learn) user interface |
217 | =item * efficient (and hard to learn) user interface |
209 | |
218 | |
210 | CV uses key combinations. A lot. If you are an experienced XV user, you |
219 | CV uses key combinations. A lot. If you are an experienced XV user, you |
211 | will find most of these keys familiar. If not, CV might be hard to use at |
220 | will find most of these keys familiar. If not, CV might be hard to use at |
212 | first, but will be an efficient tool later. |
221 | first, but will be an efficient tool later. |
213 | |
222 | |
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223 | =item * multi-window GUI |
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224 | |
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225 | CV doesn't force you to use a specific layout, instead it relies on your |
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226 | window manager, thus enabling you to chose whatever layout that suits you |
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227 | most. |
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228 | |
214 | =item * i18n'ed filename handling throughout |
229 | =item * i18n'ed filename handling throughout |
215 | |
230 | |
216 | As long as glib can recognize your filename encoding (either UTF-8 or |
231 | As long as glib can recognize your filename encoding (either UTF-8 or |
217 | locale-specific, depending on your settings) and you have the relevant |
232 | locale-specific, depending on the setting of G_BROKEN_FILENAMES) and you |
218 | fonts, CV will display your filenames correctly. |
233 | have the relevant fonts, CV will display your filenames correctly. |
219 | |
234 | |
220 | =item * extensible through plug-ins |
235 | =item * extensible through plug-ins |
221 | |
236 | |
222 | I have weird plug-ins that access remote databases to find a |
237 | I have weird plug-ins that access remote databases to find a |
223 | directory. This is not likely to be of any use to other people. Likewise, |
238 | directory. This is not likely to be of any use to other people. Likewise, |
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244 | . enlarge the image by 10% |
259 | . enlarge the image by 10% |
245 | n reset to normal size |
260 | n reset to normal size |
246 | m maximize to screensize |
261 | m maximize to screensize |
247 | M maximize to screensize, respecting image aspect |
262 | M maximize to screensize, respecting image aspect |
248 | ctrl-m toggle maxpect-always mode |
263 | ctrl-m toggle maxpect-always mode |
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264 | ctrl-sift-m toggle using current image size as max image size |
249 | u uncrop |
265 | u uncrop |
250 | r set scaling mode to 'nearest' (fastest) |
266 | r set scaling mode to 'nearest' (fastest) |
251 | s set scaling mode to 'bilinear' (default) |
267 | s set scaling mode to 'bilinear' (default) |
252 | shift-s set scaling mode to 'hyper' (slowest) |
268 | shift-s set scaling mode to 'hyper' (slowest) |
253 | t rotate clockwise 90° |
269 | t rotate clockwise 90° |
254 | T rotate counterclockwise° |
270 | T rotate counterclockwise° |
255 | 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 |
256 | 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 |
257 | ctrl-p fire up the print fialog |
273 | ctrl-p fire up the print dialog |
258 | escape cancel a crop action |
274 | escape cancel a crop action |
259 | |
275 | |
260 | And when playing movies, these additional keys are active: |
276 | And when playing movies, these additional keys are active: |
261 | |
277 | |
262 | left rewind by 10 seconds |
278 | left rewind by 10 seconds |
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300 | ctrl-g force generation of thumbnais for the selected files |
316 | ctrl-g force generation of thumbnais for the selected files |
301 | ctrl-s rescan current direcory or files updates/deletes etc. |
317 | ctrl-s rescan current direcory or files updates/deletes etc. |
302 | ctrl-u update selected (or all) icons if neccessary |
318 | ctrl-u update selected (or all) icons if neccessary |
303 | ctrl-l don't use, will become a plug-in eventually |
319 | ctrl-l don't use, will become a plug-in eventually |
304 | |
320 | |
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321 | ^ go to parent directory (caret). |
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322 | |
305 | 0-9, |
323 | 0-9, |
306 | a-z find the first filename beginning with this letter |
324 | a-z find the first filename beginning with this letter |
307 | |
325 | |
308 | Right-clicking into the schnauzer window displays a pop-up menu with |
326 | Right-clicking into the schnauzer window displays a pop-up menu with |
309 | additional actions. |
327 | additional actions. |
310 | |
328 | |
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329 | =head3 SELECTION |
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330 | |
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331 | You can select entries in the Schnauzer in a variety of ways: |
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332 | |
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333 | =over 4 |
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334 | |
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335 | =item Keyboard |
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336 | |
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337 | Moving the cursor with the keyboard will first deselect all files and then |
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338 | select the file you moved to. |
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339 | |
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340 | =item Clicking |
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341 | |
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342 | Clicking on an entry will select the one you clicked and deselect all |
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343 | others. |
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344 | |
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345 | =item Shift-Clicking |
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346 | |
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347 | Shift-clicking will toggle the selection on the entry under the mouse. |
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348 | |
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349 | =item Dragging |
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350 | |
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351 | Dragging will select all entries between the one selected when pushing the |
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352 | button and the one selected when releasing the button. If you move above |
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353 | or below the schnauzer area while drag-selecting, the schnauzer will move |
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354 | up/down one row twice per second. In addition, horizontal mouse movement |
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355 | acts as a kind of invisible horizontal scrollbar. |
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356 | |
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357 | =item Hint: double-click works while click-selecting |
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358 | |
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359 | You can double-click any image while click-selecting to display it |
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360 | without stopping the selection process. This will act as if you normally |
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361 | double-clicked the image to display it, and will toggle the selection |
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362 | twice, resulting in no change. |
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363 | |
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364 | =back |
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365 | |
311 | =head1 FILES |
366 | =head1 FILES |
312 | |
367 | |
313 | When starting, CV runs the F<.cvrc> file in your F<$HOME> directory as if |
368 | When starting, CV runs the F<.cvrc> file in your F<$HOME> directory as if |
314 | it were a perl script. in that, you will mostly load plug-ins. |
369 | it were a perl script. in that, you will mostly load plug-ins. |
315 | |
370 | |
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341 | |
396 | |
342 | =back |
397 | =back |
343 | |
398 | |
344 | =head1 SECURITY CONSIDERATIONS |
399 | =head1 SECURITY CONSIDERATIONS |
345 | |
400 | |
346 | CV uses Pixbuf to load images. Pixbuf is not considered safe for this |
401 | CV uses Pixbuf to load non-JPEG images. Pixbuf is not considered safe for |
347 | purpose, though (from the gtk-2.2 release notes): |
402 | this purpose, though (from the gtk-2.2 release notes): |
348 | |
403 | |
349 | "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 |
350 | images, using gdk-pixbuf to load untrusted data is not recommended, due to |
405 | images, using gdk-pixbuf to load untrusted data is not recommended, due to |
351 | the likelyhood that there are additional problems where an invalid image |
406 | the likelyhood that there are additional problems where an invalid image |
352 | could cause gdk-pixbuf to crash or worse." |
407 | could cause gdk-pixbuf to crash or worse." |
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354 | =head1 BUGS/TODO |
409 | =head1 BUGS/TODO |
355 | |
410 | |
356 | Lots of functionality is missing. |
411 | Lots of functionality is missing. |
357 | |
412 | |
358 | 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 |
359 | names incompatible might utf-8 fail. |
414 | names incompatible with utf-8 might fail. |
360 | |
415 | |
361 | rotate on disk |
416 | rotate on disk |
362 | lots of ui issues |
417 | lots of ui issues |
363 | save(?) |
418 | save(?) |
364 | preferences |
419 | preferences |
365 | shift-cursor in schnauzer |
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366 | |
420 | |
367 | =head1 AUTHOR |
421 | =head1 AUTHOR |
368 | |
422 | |
369 | Marc Lehmann <cv@plan9.de>. |
423 | Marc Lehmann <cv@plan9.de>. |
370 | |
424 | |