| … | |
… | |
| 23 | |
23 | |
| 24 | use File::Spec; |
24 | use File::Spec; |
| 25 | |
25 | |
| 26 | my $mainwin; |
26 | my $mainwin; |
| 27 | my $viewer; |
27 | my $viewer; |
|
|
28 | my $viewer_count; |
| 28 | my $schnauzer; |
29 | my $schnauzer; |
| 29 | my $info; |
30 | my $info; |
| 30 | my $help; |
31 | my $help; |
| 31 | |
32 | |
| 32 | my $schnauzer_idx = 0; |
33 | my $schnauzer_idx = 0; |
| … | |
… | |
| 38 | $s->signal_connect (activate => sub { |
39 | $s->signal_connect (activate => sub { |
| 39 | my $label = sprintf "%s (%d)", |
40 | my $label = sprintf "%s (%d)", |
| 40 | (File::Spec->splitpath ($_[1]))[2], |
41 | (File::Spec->splitpath ($_[1]))[2], |
| 41 | -s $_[1]; |
42 | -s $_[1]; |
| 42 | $info->set_label ($label); |
43 | $info->set_label ($label); |
| 43 | $viewer->load_image ($_[1]); |
44 | $viewer->load_image ($_[1]) if $viewer; # TODO: error, or chose ANY viewer |
| 44 | }); |
45 | }); |
| 45 | |
46 | |
| 46 | Gtk2::CV::Plugin->call (new_schnauzer => $s); |
47 | Gtk2::CV::Plugin->call (new_schnauzer => $s); |
| 47 | |
48 | |
| 48 | $s; |
49 | $s |
|
|
50 | } |
|
|
51 | |
|
|
52 | sub new_viewer { |
|
|
53 | my $self = new Gtk2::CV::ImageWindow; |
|
|
54 | |
|
|
55 | $viewer_count++; |
|
|
56 | |
|
|
57 | $self->set_title ("CV: Image"); |
|
|
58 | |
|
|
59 | $self->signal_connect (key_press_event => sub { |
|
|
60 | $viewer = $_[0]; |
|
|
61 | |
|
|
62 | my $key = $_[1]->keyval; |
|
|
63 | my $state = $_[1]->state; |
|
|
64 | |
|
|
65 | if ($state * "control-mask" && $key == $Gtk2::Gdk::Keysyms{c}) { |
|
|
66 | my $viewer = new_viewer (); |
|
|
67 | $viewer->set_image ($_[0]->{image}); |
|
|
68 | $viewer->show_all; |
|
|
69 | 1 |
|
|
70 | } else { |
|
|
71 | &std_keys |
|
|
72 | or $schnauzer->signal_emit (key_press_event => $_[1]) |
|
|
73 | } |
|
|
74 | }); |
|
|
75 | $self->signal_connect (destroy => sub { |
|
|
76 | $viewer = undef if $viewer == $_[0]; |
|
|
77 | |
|
|
78 | main_quit Gtk2 unless --$viewer_count; |
|
|
79 | }); |
|
|
80 | |
|
|
81 | $self->signal_connect (button3_press_event => sub { |
|
|
82 | $mainwin->visible |
|
|
83 | ? $mainwin->hide |
|
|
84 | : $mainwin->show_all; |
|
|
85 | 1 |
|
|
86 | }); |
|
|
87 | |
|
|
88 | Gtk2::CV::Plugin->call (new_imagewindow => $self); |
|
|
89 | |
|
|
90 | $self |
| 49 | } |
91 | } |
| 50 | |
92 | |
| 51 | sub std_keys { |
93 | sub std_keys { |
| 52 | my $key = $_[1]->keyval; |
94 | my $key = $_[1]->keyval; |
| 53 | my $state = $_[1]->state; |
95 | my $state = $_[1]->state; |
| 54 | |
96 | |
| 55 | my $ctrl = $state * "control-mask"; |
97 | my $ctrl = $state * "control-mask"; |
| 56 | |
98 | |
| 57 | if ($key == $Gtk2::Gdk::Keysyms{q}) { |
99 | if ($key == $Gtk2::Gdk::Keysyms{q}) { |
| 58 | main_quit Gtk2; |
100 | $viewer->destroy; |
| 59 | } elsif ($ctrl && $key == $Gtk2::Gdk::Keysyms{v}) { |
101 | } elsif ($ctrl && $key == $Gtk2::Gdk::Keysyms{v}) { |
| 60 | my $w = new Gtk2::Window; |
102 | my $w = new Gtk2::Window; |
| 61 | |
103 | |
| 62 | $w->set_title ("CV: Schnauzer"); |
104 | $w->set_title ("CV: Schnauzer"); |
| 63 | $w->add (my $s = new_schnauzer); |
105 | $w->add (my $s = new_schnauzer); |
| … | |
… | |
| 88 | |
130 | |
| 89 | 1 |
131 | 1 |
| 90 | } |
132 | } |
| 91 | |
133 | |
| 92 | { |
134 | { |
| 93 | $viewer = new Gtk2::CV::ImageWindow; |
135 | $viewer = new_viewer; |
| 94 | |
136 | $::cur_viewer = $viewer; |
| 95 | $viewer->set_title ("CV: Image"); |
|
|
| 96 | |
|
|
| 97 | $viewer->signal_connect (key_press_event => sub { |
|
|
| 98 | &std_keys |
|
|
| 99 | or $schnauzer->signal_emit (key_press_event => $_[1]) |
|
|
| 100 | }); |
|
|
| 101 | $viewer->signal_connect (delete_event => sub { main_quit Gtk2 }); |
|
|
| 102 | |
|
|
| 103 | $viewer->signal_connect (button3_press_event => sub { |
|
|
| 104 | $mainwin->visible |
|
|
| 105 | ? $mainwin->hide |
|
|
| 106 | : $mainwin->show_all; |
|
|
| 107 | 1; |
|
|
| 108 | }); |
|
|
| 109 | |
|
|
| 110 | Gtk2::CV::Plugin->call (new_imagewindow => $viewer); |
|
|
| 111 | |
137 | |
| 112 | $schnauzer = new_schnauzer; |
138 | $schnauzer = new_schnauzer; |
| 113 | |
139 | |
| 114 | $mainwin = new Gtk2::Window; |
140 | $mainwin = new Gtk2::Window; |
| 115 | $mainwin->set_title ("CV"); |
141 | $mainwin->set_title ("CV"); |
| 116 | $mainwin->add (my $vbox = new Gtk2::VBox); |
142 | $mainwin->add (my $vbox = new Gtk2::VBox); |
| 117 | $mainwin->signal_connect (delete_event => sub { $mainwin->hide; 1; }); |
143 | $mainwin->signal_connect (delete_event => sub { $mainwin->hide; 1 }); |
| 118 | |
144 | |
| 119 | $vbox->add ($schnauzer); |
145 | $vbox->add ($schnauzer); |
| 120 | $vbox->pack_end (my $frame = new Gtk2::Frame, 0, 0, 0); |
146 | $vbox->pack_end (my $frame = new Gtk2::Frame, 0, 0, 0); |
| 121 | $frame->add (my $hbox = new Gtk2::HBox 0, 0); |
147 | $frame->add (my $hbox = new Gtk2::HBox 0, 0); |
| 122 | $hbox->pack_start ((new Gtk2::Label "Info: "), 0, 0, 0); |
148 | $hbox->pack_start ((new Gtk2::Label "Info: "), 0, 0, 0); |
| … | |
… | |
| 143 | |
169 | |
| 144 | main Gtk2; |
170 | main Gtk2; |
| 145 | |
171 | |
| 146 | __DATA__ |
172 | __DATA__ |
| 147 | |
173 | |
|
|
174 | =encoding utf-8 |
|
|
175 | |
| 148 | =head1 NAME |
176 | =head1 NAME |
| 149 | |
177 | |
| 150 | cv - a fast gtk+ image viewer loosely modeled after XV |
178 | cv - a fast gtk+ image viewer loosely modeled after XV |
| 151 | |
179 | |
| 152 | =head1 SYNOPSIS |
180 | =head1 SYNOPSIS |
| … | |
… | |
| 160 | |
188 | |
| 161 | =over 4 |
189 | =over 4 |
| 162 | |
190 | |
| 163 | =item * optimized directory scanning algorithm |
191 | =item * optimized directory scanning algorithm |
| 164 | |
192 | |
| 165 | The directory scanning in CV plays some tricks that - on most modern |
193 | The directory scanning in CV uses some tricks that - on most modern |
| 166 | filesystems - makes it possible to detect filetypes faster than stat()'ing |
194 | filesystems - makes it possible to detect filetypes faster than stat()'ing |
| 167 | every file. This makes CV suitable for directories with lots of files |
195 | every file. This makes CV suitable for directories with lots of files |
| 168 | (10000+). |
196 | (10000+). |
| 169 | |
197 | |
| 170 | This algorithm is quite unprecise - it doesn't make a difference between |
198 | 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 |
199 | files, device nodes, symlinks and the like, and filetype detection is done |
| 172 | using the file extension only. |
200 | using the file extension only. |
| 173 | |
201 | |
|
|
202 | On the positive side, it is usually many orders of magnitude faster than |
|
|
203 | traditional scanning techniques (good for directories with 10000 or |
|
|
204 | 100000+ files). |
|
|
205 | |
|
|
206 | =item * queuing for all time-consuming background tasks |
|
|
207 | |
|
|
208 | All tasks, such as unlinking files or generating thumbnails, that can be |
|
|
209 | done in the background will be done so - no waiting required, even when |
|
|
210 | changing directories. |
|
|
211 | |
| 174 | =item * use of asynchronous I/O |
212 | =item * use of asynchronous I/O |
| 175 | |
213 | |
| 176 | CV tries to use asynchronous I/O whereever it makes sense, for example |
214 | CV tries to use asynchronous I/O whereever it makes sense, for example |
| 177 | while scanning directories, waiting for stat data or unlinking files. This |
215 | while scanning directories, waiting for stat data, unlinking files or |
| 178 | usually decreases scanning times for large directories a bit (especially |
216 | generating thumbnails. This usually decreases scanning times for large |
| 179 | on RAID devices and over NFS). |
217 | directories a bit (especially on RAID devices and over NFS) and makes CV |
|
|
218 | much more interactive. |
| 180 | |
219 | |
| 181 | =item * fast image loading |
220 | =item * fast image loading |
| 182 | |
221 | |
| 183 | The time span between the user issuing a command and displaying the new |
222 | The time span between the user issuing a command and displaying the new |
| 184 | image should be as small as possible. CV uses optimized (especially |
223 | image should be as small as possible. CV uses optimized (especially |
| 185 | for JPEG) loading functions and sacrifices some quality (e.g no gamma |
224 | for JPEG) loading functions and sacrifices some quality (e.g no gamma |
| 186 | correction) to achieve this speed. |
225 | correction, although this might change) to achieve this speed. |
| 187 | |
226 | |
| 188 | =item * fast thumbnail creation |
227 | =item * fast thumbnail creation |
| 189 | |
228 | |
| 190 | Thumbnail creation is crucial for me, so it's better be fast. Thumbnail |
229 | Thumbnail creation uses both CPU and Disk-I/O. CV interleaves both, so |
|
|
230 | on modern CPUs, thumbnailing is usually limited by I/O speed. Thumbnail |
| 191 | creation for JPEGs has been specially optimized. |
231 | creation for JPEGs has been specially optimized and can even take |
|
|
232 | advantage of multiple CPUs. |
| 192 | |
233 | |
| 193 | =item * minimum optical clutter |
234 | =item * minimum optical clutter |
| 194 | |
235 | |
| 195 | CV has no menus or other user interface elements that take up a lot of |
236 | CV has no menus or other user interface elements that take up a lot of |
| 196 | screen space. The schnauzer windows can also be somewhat crowded. |
237 | screen space (or are useful for beginning users). The schnauzer windows |
|
|
238 | can also be somewhat crowded. |
| 197 | |
239 | |
| 198 | The point of an image viewer is viewing images, not a nice GUI. This is |
240 | The point of an image viewer is viewing images, not a nice GUI. This is |
| 199 | similar to XV's behaviour. |
241 | similar to XV's behaviour. |
| 200 | |
242 | |
| 201 | =item * efficient (and hard to learn) user interface |
243 | =item * efficient (and hard to learn) user interface |
| 202 | |
244 | |
| 203 | CV uses key combinations. A lot. If you are an experienced XV user, you |
245 | CV uses key combinations. A lot. If you are an experienced XV user, you |
| 204 | will find most of these keys familiar. If not, CV might be hard to use at |
246 | will find most of these keys familiar. If not, CV might be hard to use at |
| 205 | first, but will be an efficient tool later. |
247 | first, but will be an efficient tool later. |
| 206 | |
248 | |
|
|
249 | =item * multi-window GUI |
|
|
250 | |
|
|
251 | CV doesn't force you to use a specific layout, instead it relies on your |
|
|
252 | window manager, thus enabling you to chose whatever layout that suits you |
|
|
253 | most. |
|
|
254 | |
| 207 | =item * i18n'ed filename handling throughout |
255 | =item * i18n'ed filename handling throughout |
| 208 | |
256 | |
| 209 | As long as glib can recognize your filename encoding (either UTF-8 or |
257 | As long as glib can recognize your filename encoding (either UTF-8 or |
| 210 | locale-specific, depending on your settings) and you have the relevant |
258 | locale-specific, depending on the setting of G_BROKEN_FILENAMES) and you |
| 211 | fonts, CV will display your filenames correctly. |
259 | have the relevant fonts, CV will display your filenames correctly. |
| 212 | |
260 | |
| 213 | =item * extensible through plug-ins |
261 | =item * extensible through plug-ins |
| 214 | |
262 | |
| 215 | I have weird plug-ins that access remote databases to find a |
263 | I have weird plug-ins that access remote databases to find a |
| 216 | directory. This is not likely to be of any use to other people. Likewise, |
264 | directory. This is not likely to be of any use to other people. Likewise, |
| … | |
… | |
| 237 | . enlarge the image by 10% |
285 | . enlarge the image by 10% |
| 238 | n reset to normal size |
286 | n reset to normal size |
| 239 | m maximize to screensize |
287 | m maximize to screensize |
| 240 | M maximize to screensize, respecting image aspect |
288 | M maximize to screensize, respecting image aspect |
| 241 | ctrl-m toggle maxpect-always mode |
289 | ctrl-m toggle maxpect-always mode |
|
|
290 | ctrl-sift-m toggle using current image size as max image size |
| 242 | u uncrop |
291 | u uncrop |
| 243 | r set scaling mode to 'nearest' (fastest) |
292 | r set scaling mode to 'nearest' (fastest) |
| 244 | s set scaling mode to 'bilinear' (default) |
293 | s set scaling mode to 'bilinear' (default) |
| 245 | shift-s set scaling mode to 'hyper' (slowest) |
294 | shift-s set scaling mode to 'hyper' (slowest) |
| 246 | t rotate clockwise 90° |
295 | t rotate clockwise 90° |
| 247 | T rotate counterclockwise° |
296 | T rotate counterclockwise° |
| 248 | ctrl-v open a new visual schnauzer window for the current dir |
297 | ctrl-v open a new visual schnauzer window for the current dir |
| 249 | ctrl-e run an editor ($CV_EDITOR or "gimp") on the current image |
298 | ctrl-e run an editor ($CV_EDITOR or "gimp") on the current image |
| 250 | ctrl-p fire up the print fialog |
299 | ctrl-p fire up the print dialog |
| 251 | escape cancel a crop action |
300 | escape cancel a crop action |
| 252 | |
301 | |
| 253 | And when playing movies, these additional keys are active: |
302 | And when playing movies, these additional keys are active: |
| 254 | |
303 | |
| 255 | left rewind by 10 seconds |
304 | left rewind by 10 seconds |
| … | |
… | |
| 293 | ctrl-g force generation of thumbnais for the selected files |
342 | ctrl-g force generation of thumbnais for the selected files |
| 294 | ctrl-s rescan current direcory or files updates/deletes etc. |
343 | ctrl-s rescan current direcory or files updates/deletes etc. |
| 295 | ctrl-u update selected (or all) icons if neccessary |
344 | ctrl-u update selected (or all) icons if neccessary |
| 296 | ctrl-l don't use, will become a plug-in eventually |
345 | ctrl-l don't use, will become a plug-in eventually |
| 297 | |
346 | |
|
|
347 | ^ go to parent directory (caret). |
|
|
348 | |
| 298 | 0-9, |
349 | 0-9, |
| 299 | a-z find the first filename beginning with this letter |
350 | a-z find the first filename beginning with this letter |
| 300 | |
351 | |
| 301 | Right-clicking into the schnauzer window displays a pop-up menu with |
352 | Right-clicking into the schnauzer window displays a pop-up menu with |
| 302 | additional actions. |
353 | additional actions. |
| 303 | |
354 | |
|
|
355 | =head3 SELECTION |
|
|
356 | |
|
|
357 | You can select entries in the Schnauzer in a variety of ways: |
|
|
358 | |
|
|
359 | =over 4 |
|
|
360 | |
|
|
361 | =item Keyboard |
|
|
362 | |
|
|
363 | Moving the cursor with the keyboard will first deselect all files and then |
|
|
364 | select the file you moved to. |
|
|
365 | |
|
|
366 | =item Clicking |
|
|
367 | |
|
|
368 | Clicking on an entry will select the one you clicked and deselect all |
|
|
369 | others. |
|
|
370 | |
|
|
371 | =item Shift-Clicking |
|
|
372 | |
|
|
373 | Shift-clicking will toggle the selection on the entry under the mouse. |
|
|
374 | |
|
|
375 | =item Dragging |
|
|
376 | |
|
|
377 | Dragging will select all entries between the one selected when pushing the |
|
|
378 | button and the one selected when releasing the button. If you move above |
|
|
379 | or below the schnauzer area while drag-selecting, the schnauzer will move |
|
|
380 | up/down one row twice per second. In addition, horizontal mouse movement |
|
|
381 | acts as a kind of invisible horizontal scrollbar. |
|
|
382 | |
|
|
383 | =item Hint: double-click works while click-selecting |
|
|
384 | |
|
|
385 | You can double-click any image while click-selecting to display it |
|
|
386 | without stopping the selection process. This will act as if you normally |
|
|
387 | double-clicked the image to display it, and will toggle the selection |
|
|
388 | twice, resulting in no change. |
|
|
389 | |
|
|
390 | =back |
|
|
391 | |
| 304 | =head1 FILES |
392 | =head1 FILES |
| 305 | |
393 | |
| 306 | When starting, CV runs the F<.cvrc> file in your F<$HOME> directory as if |
394 | When starting, CV runs the F<.cvrc> file in your F<$HOME> directory as if |
| 307 | it were a perl script. in that, you will mostly load plug-ins. |
395 | it were a perl script. in that, you will mostly load plug-ins. |
| 308 | |
396 | |
| … | |
… | |
| 334 | |
422 | |
| 335 | =back |
423 | =back |
| 336 | |
424 | |
| 337 | =head1 SECURITY CONSIDERATIONS |
425 | =head1 SECURITY CONSIDERATIONS |
| 338 | |
426 | |
| 339 | CV uses Pixbuf to load images. Pixbuf is not considered safe for this |
427 | CV uses Pixbuf to load non-JPEG images. Pixbuf is not considered safe for |
| 340 | purpose, though (from the gtk-2.2 release notes): |
428 | this purpose, though (from the gtk-2.2 release notes): |
| 341 | |
429 | |
| 342 | "While efforts have been made to make gdk-pixbuf robust against invalid |
430 | "While efforts have been made to make gdk-pixbuf robust against invalid |
| 343 | images, using gdk-pixbuf to load untrusted data is not recommended, due to |
431 | images, using gdk-pixbuf to load untrusted data is not recommended, due to |
| 344 | the likelyhood that there are additional problems where an invalid image |
432 | the likelyhood that there are additional problems where an invalid image |
| 345 | could cause gdk-pixbuf to crash or worse." |
433 | could cause gdk-pixbuf to crash or worse." |
| … | |
… | |
| 347 | =head1 BUGS/TODO |
435 | =head1 BUGS/TODO |
| 348 | |
436 | |
| 349 | Lots of functionality is missing. |
437 | Lots of functionality is missing. |
| 350 | |
438 | |
| 351 | Pixbuf doesn't always honor G_BROKEN_FILENAMES, so accessing files with |
439 | Pixbuf doesn't always honor G_BROKEN_FILENAMES, so accessing files with |
| 352 | names incompatible might utf-8 fail. |
440 | names incompatible with utf-8 might fail. |
| 353 | |
441 | |
| 354 | rotate on disk |
442 | rotate on disk |
| 355 | lots of ui issues |
443 | lots of ui issues |
| 356 | save(?) |
444 | save(?) |
| 357 | preferences |
445 | preferences |
| 358 | shift-cursor in schnauzer |
|
|
| 359 | |
446 | |
| 360 | =head1 AUTHOR |
447 | =head1 AUTHOR |
| 361 | |
448 | |
| 362 | Marc Lehmann <cv@plan9.de>. |
449 | Marc Lehmann <cv@plan9.de>. |
| 363 | |
450 | |
