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Comparing CV/bin/cv (file contents):
Revision 1.52 by root, Sun Aug 14 19:07:15 2005 UTC vs.
Revision 1.69 by root, Thu Nov 2 00:09:15 2006 UTC

23 23
24use File::Spec; 24use File::Spec;
25 25
26my $mainwin; 26my $mainwin;
27my $viewer; 27my $viewer;
28my $viewer_count;
28my $schnauzer; 29my $schnauzer;
29my $info; 30my $info;
30my $help; 31my $help;
31 32
32my $schnauzer_idx = 0; 33my $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
52sub 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 (delete_event => sub { $_[0]->destroy; 0 });
76 $self->signal_connect (destroy => sub {
77 $viewer = undef if $viewer == $_[0];
78
79 main_quit Gtk2 unless --$viewer_count;
80
81 0
82 });
83
84 $self->signal_connect (button3_press_event => sub {
85 $mainwin->visible
86 ? $mainwin->hide
87 : $mainwin->show_all;
88
89 1
90 });
91
92 Gtk2::CV::Plugin->call (new_imagewindow => $self);
93
94 $self
49} 95}
50 96
51sub std_keys { 97sub std_keys {
52 my $key = $_[1]->keyval; 98 my $key = $_[1]->keyval;
53 my $state = $_[1]->state; 99 my $state = $_[1]->state;
54 100
55 my $ctrl = $state * "control-mask"; 101 my $ctrl = $state * "control-mask";
56 102
57 if ($key == $Gtk2::Gdk::Keysyms{q}) { 103 if ($key == $Gtk2::Gdk::Keysyms{q}) {
58 main_quit Gtk2; 104 $viewer->destroy;
59 } elsif ($ctrl && $key == $Gtk2::Gdk::Keysyms{v}) { 105 } elsif ($ctrl && $key == $Gtk2::Gdk::Keysyms{v}) {
60 my $w = new Gtk2::Window; 106 my $w = new Gtk2::Window;
61 107
108 $w->set_role ("schnauzer");
62 $w->set_title ("CV: Schnauzer"); 109 $w->set_title ("CV: Schnauzer");
63 $w->add (my $s = new_schnauzer); 110 $w->add (my $s = new_schnauzer);
64 $s->set_dir (File::Spec->curdir); 111 $s->set_dir (File::Spec->curdir);
65 $s->set_geometry_hints; 112 $s->set_geometry_hints;
66 $w->show_all; 113 $w->show_all;
68 } elsif ($ctrl && $key == $Gtk2::Gdk::Keysyms{h}) { 115 } elsif ($ctrl && $key == $Gtk2::Gdk::Keysyms{h}) {
69 unless ($help) { 116 unless ($help) {
70 require Gtk2::PodViewer; 117 require Gtk2::PodViewer;
71 118
72 $help = new Gtk2::Window; 119 $help = new Gtk2::Window;
120 $help->set_role ("help");
73 $help->set_title ("CV: Help"); 121 $help->set_title ("CV: Help");
74 $help->set_default_size (500, 300); 122 $help->set_default_size (500, 300);
75 $help->signal_connect (delete_event => sub { $help->hide; 1 }); 123 $help->signal_connect (delete_event => sub { $help->hide; 1 });
76 124
77 $help->add (my $sw = new Gtk2::ScrolledWindow); 125 $help->add (my $sw = new Gtk2::ScrolledWindow);
88 136
89 1 137 1
90} 138}
91 139
92{ 140{
93 $viewer = new Gtk2::CV::ImageWindow; 141 $viewer = new_viewer;
94 142 $::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);
111 143
112 $schnauzer = new_schnauzer; 144 $schnauzer = new_schnauzer;
113 145
114 $mainwin = new Gtk2::Window; 146 $mainwin = new Gtk2::Window;
147 $mainwin->set_role ("main");
115 $mainwin->set_title ("CV"); 148 $mainwin->set_title ("CV");
116 $mainwin->add (my $vbox = new Gtk2::VBox); 149 $mainwin->add (my $vbox = new Gtk2::VBox);
117 $mainwin->signal_connect (delete_event => sub { $mainwin->hide; 1; }); 150 $mainwin->signal_connect (delete_event => sub { $mainwin->hide; 1 });
118 151
119 $vbox->add ($schnauzer); 152 $vbox->add ($schnauzer);
120 $vbox->pack_end (my $frame = new Gtk2::Frame, 0, 0, 0); 153 $vbox->pack_end (my $frame = new Gtk2::Frame, 0, 0, 0);
121 $frame->add (my $hbox = new Gtk2::HBox 0, 0); 154 $frame->add (my $hbox = new Gtk2::HBox 0, 0);
122 $hbox->pack_start ((new Gtk2::Label "Info: "), 0, 0, 0); 155 $hbox->pack_start ((new Gtk2::Label "Info: "), 0, 0, 0);
127 160
128 $schnauzer->set_geometry_hints; 161 $schnauzer->set_geometry_hints;
129} 162}
130 163
131if (@ARGV) { 164if (@ARGV) {
165 my $show_first = sub {
166 $schnauzer->show_all;
167 $schnauzer->handle_key ($Gtk2::Gdk::Keysyms{space}, []);
168 $viewer->show_all;
169 };
170
132 @ARGV == 1 && -d $ARGV[0] 171 @ARGV == 1 && -d $ARGV[0]
133 ? $schnauzer->set_dir (Glib::filename_to_unicode shift) 172 ? $schnauzer->set_dir (Glib::filename_to_unicode shift, $show_first)
134 : $schnauzer->set_paths ([map Glib::filename_to_unicode $_, @ARGV]); 173 : $schnauzer->set_paths ([map Glib::filename_to_unicode $_, @ARGV], 1, $show_first);
135 $schnauzer->show_all;
136 $schnauzer->handle_key ($Gtk2::Gdk::Keysyms{space}, []);
137} else { 174} else {
138 $schnauzer->set_dir (File::Spec->curdir); 175 $schnauzer->set_dir (File::Spec->curdir, sub {
139 $mainwin->show_all; 176 $mainwin->show_all;
140}
141
142$viewer->show_all; 177 $viewer->show_all;
178 });
179}
143 180
144main Gtk2; 181main Gtk2;
145 182
183Gtk2::CV::flush_aio;
184
146__DATA__ 185__DATA__
186
187=encoding utf-8
147 188
148=head1 NAME 189=head1 NAME
149 190
150cv - a fast gtk+ image viewer loosely modeled after XV 191cv - a fast gtk+ image viewer loosely modeled after XV
151 192
160 201
161=over 4 202=over 4
162 203
163=item * optimized directory scanning algorithm 204=item * optimized directory scanning algorithm
164 205
165The directory scanning in CV plays some tricks that - on most modern 206The directory scanning in CV uses some tricks that - on most modern
166filesystems - makes it possible to detect filetypes faster than stat()'ing 207filesystems - makes it possible to detect filetypes faster than stat()'ing
167every file. This makes CV suitable for directories with lots of files 208every file. This makes CV suitable for directories with lots of files
168(10000+). 209(10000+).
169 210
170This algorithm is quite unprecise - it doesn't make a difference between 211This algorithm is quite unprecise - it doesn't make a difference between
171files, device nodes, symlinks and the like, and filetype detection is done 212files, device nodes, symlinks and the like, and filetype detection is done
172using the file extension only. 213using the file extension only.
173 214
215On the positive side, it is usually many orders of magnitude faster than
216traditional scanning techniques (good for directories with 10000 or
217100000+ files).
218
219=item * queuing for all time-consuming background tasks
220
221All tasks, such as unlinking files or generating thumbnails, that can be
222done in the background will be done so - no waiting required, even when
223changing directories.
224
174=item * use of asynchronous I/O 225=item * use of asynchronous I/O
175 226
176CV tries to use asynchronous I/O whereever it makes sense, for example 227CV tries to use asynchronous I/O whereever it makes sense, for example
177while scanning directories, waiting for stat data or unlinking files. This 228while scanning directories, waiting for stat data, unlinking files or
178usually decreases scanning times for large directories a bit (especially 229generating thumbnails. This usually decreases scanning times for large
179on RAID devices and over NFS). 230directories a bit (especially on RAID devices and over NFS) and makes CV
231much more interactive.
180 232
181=item * fast image loading 233=item * fast image loading
182 234
183The time span between the user issuing a command and displaying the new 235The time span between the user issuing a command and displaying the new
184image should be as small as possible. CV uses optimized (especially 236image should be as small as possible. CV uses optimized (especially
185for JPEG) loading functions and sacrifices some quality (e.g no gamma 237for JPEG) loading functions and sacrifices some quality (e.g no gamma
186correction) to achieve this speed. 238correction, although this might change) to achieve this speed.
187 239
188=item * fast thumbnail creation 240=item * fast thumbnail creation
189 241
190Thumbnail creation is crucial for me, so it's better be fast. Thumbnail 242Thumbnail creation uses both CPU and Disk-I/O. CV interleaves both, so
243on modern CPUs, thumbnailing is usually limited by I/O speed. Thumbnail
191creation for JPEGs has been specially optimized. 244creation for JPEGs has been specially optimized and can even take
245advantage of multiple CPUs.
192 246
193=item * minimum optical clutter 247=item * minimum optical clutter
194 248
195CV has no menus or other user interface elements that take up a lot of 249CV has no menus or other user interface elements that take up a lot of
196screen space. The schnauzer windows can also be somewhat crowded. 250screen space (or are useful for beginning users). The schnauzer windows
251can also be somewhat crowded.
197 252
198The point of an image viewer is viewing images, not a nice GUI. This is 253The point of an image viewer is viewing images, not a nice GUI. This is
199similar to XV's behaviour. 254similar to XV's behaviour.
200 255
201=item * efficient (and hard to learn) user interface 256=item * efficient (and hard to learn) user interface
202 257
203CV uses key combinations. A lot. If you are an experienced XV user, you 258CV uses key combinations. A lot. If you are an experienced XV user, you
204will find most of these keys familiar. If not, CV might be hard to use at 259will find most of these keys familiar. If not, CV might be hard to use at
205first, but will be an efficient tool later. 260first, but will be an efficient tool later.
206 261
262=item * multi-window GUI
263
264CV doesn't force you to use a specific layout, instead it relies on your
265window manager, thus enabling you to chose whatever layout that suits you
266most.
267
207=item * i18n'ed filename handling throughout 268=item * i18n'ed filename handling throughout
208 269
209As long as glib can recognize your filename encoding (either UTF-8 or 270As long as glib can recognize your filename encoding (either UTF-8 or
210locale-specific, depending on your settings) and you have the relevant 271locale-specific, depending on the setting of G_BROKEN_FILENAMES) and you
211fonts, CV will display your filenames correctly. 272have the relevant fonts, CV will display your filenames correctly.
212 273
213=item * extensible through plug-ins 274=item * extensible through plug-ins
214 275
215I have weird plug-ins that access remote databases to find a 276I have weird plug-ins that access remote databases to find a
216directory. This is not likely to be of any use to other people. Likewise, 277directory. This is not likely to be of any use to other people. Likewise,
237 . enlarge the image by 10% 298 . enlarge the image by 10%
238 n reset to normal size 299 n reset to normal size
239 m maximize to screensize 300 m maximize to screensize
240 M maximize to screensize, respecting image aspect 301 M maximize to screensize, respecting image aspect
241 ctrl-m toggle maxpect-always mode 302 ctrl-m toggle maxpect-always mode
303 ctrl-sift-m toggle using current image size as max image size
242 u uncrop 304 u uncrop
243 r set scaling mode to 'nearest' (fastest) 305 r set scaling mode to 'nearest' (fastest)
244 s set scaling mode to 'bilinear' (default) 306 s set scaling mode to 'bilinear' (default)
245 shift-s set scaling mode to 'hyper' (slowest) 307 shift-s set scaling mode to 'hyper' (slowest)
246 t rotate clockwise 90° 308 t rotate clockwise 90°
247 T rotate counterclockwise° 309 T rotate counterclockwise°
310 a apply all rotations loslessly to a jpeg file (using exiftran)
248 ctrl-v open a new visual schnauzer window for the current dir 311 ctrl-v open a new visual schnauzer window for the current dir
312 ctrl-c clone the current image window
249 ctrl-e run an editor ($CV_EDITOR or "gimp") on the current image 313 ctrl-e run an editor ($CV_EDITOR or "gimp") on the current image
250 ctrl-p fire up the print fialog 314 ctrl-p fire up the print dialog
251 escape cancel a crop action 315 escape cancel a crop action
252 316
253And when playing movies, these additional keys are active: 317And when playing movies, these additional keys are active:
254 318
255 left rewind by 10 seconds 319 left rewind by 10 seconds
270Left-clicking into the image window will let you crop the image (usually 334Left-clicking into the image window will let you crop the image (usually
271to zoom into large images that CV scales down). 335to zoom into large images that CV scales down).
272 336
273=head2 THE VISUAL SCHNAUZER 337=head2 THE VISUAL SCHNAUZER
274 338
339Any image-loading action in a schnauzer window acts on the
340"last-recently-activated" imagewindow, which currently is simply the last
341image window that received a keypress.
342
275You can use the following keys in the schnauzer window: 343You can use the following keys in the schnauzer window:
276 344
277 ctrl-space, 345 ctrl-space,
278 space move to and display next image 346 space move to and display next image
279 ctrl-backspace, 347 ctrl-backspace,
293 ctrl-g force generation of thumbnais for the selected files 361 ctrl-g force generation of thumbnais for the selected files
294 ctrl-s rescan current direcory or files updates/deletes etc. 362 ctrl-s rescan current direcory or files updates/deletes etc.
295 ctrl-u update selected (or all) icons if neccessary 363 ctrl-u update selected (or all) icons if neccessary
296 ctrl-l don't use, will become a plug-in eventually 364 ctrl-l don't use, will become a plug-in eventually
297 365
366 ^ go to parent directory (caret).
367
298 0-9, 368 0-9,
299 a-z find the first filename beginning with this letter 369 a-z find the first filename beginning with this letter
300 370
301Right-clicking into the schnauzer window displays a pop-up menu with 371Right-clicking into the schnauzer window displays a pop-up menu with
302additional actions. 372additional actions.
303 373
374=head3 SELECTION
375
376You can select entries in the Schnauzer in a variety of ways:
377
378=over 4
379
380=item Keyboard
381
382Moving the cursor with the keyboard will first deselect all files and then
383select the file you moved to.
384
385=item Clicking
386
387Clicking on an entry will select the one you clicked and deselect all
388others.
389
390=item Shift-Clicking
391
392Shift-clicking will toggle the selection on the entry under the mouse.
393
394=item Dragging
395
396Dragging will select all entries between the one selected when pushing the
397button and the one selected when releasing the button. If you move above
398or below the schnauzer area while drag-selecting, the schnauzer will move
399up/down one row twice per second. In addition, horizontal mouse movement
400acts as a kind of invisible horizontal scrollbar.
401
402=item Hint: double-click works while click-selecting
403
404You can double-click any image while click-selecting to display it
405without stopping the selection process. This will act as if you normally
406double-clicked the image to display it, and will toggle the selection
407twice, resulting in no change.
408
409=back
410
304=head1 FILES 411=head1 FILES
305 412
306When starting, CV runs the F<.cvrc> file in your F<$HOME> directory as if 413When starting, CV runs the F<.cvrc> file in your F<$HOME> directory as if
307it were a perl script. in that, you will mostly load plug-ins. 414it were a perl script. in that, you will mostly load plug-ins.
308 415
334 441
335=back 442=back
336 443
337=head1 SECURITY CONSIDERATIONS 444=head1 SECURITY CONSIDERATIONS
338 445
339CV uses Pixbuf to load images. Pixbuf is not considered safe for this 446CV uses Pixbuf to load non-JPEG images. Pixbuf is not considered safe for
340purpose, though (from the gtk-2.2 release notes): 447this purpose, though (from the gtk-2.2 release notes):
341 448
342"While efforts have been made to make gdk-pixbuf robust against invalid 449"While efforts have been made to make gdk-pixbuf robust against invalid
343images, using gdk-pixbuf to load untrusted data is not recommended, due to 450images, using gdk-pixbuf to load untrusted data is not recommended, due to
344the likelyhood that there are additional problems where an invalid image 451the likelyhood that there are additional problems where an invalid image
345could cause gdk-pixbuf to crash or worse." 452could cause gdk-pixbuf to crash or worse."
347=head1 BUGS/TODO 454=head1 BUGS/TODO
348 455
349 Lots of functionality is missing. 456 Lots of functionality is missing.
350 457
351 Pixbuf doesn't always honor G_BROKEN_FILENAMES, so accessing files with 458 Pixbuf doesn't always honor G_BROKEN_FILENAMES, so accessing files with
352 names incompatible might utf-8 fail. 459 names incompatible with utf-8 might fail.
353 460
354 rotate on disk 461 rotate on disk
355 lots of ui issues 462 lots of ui issues
356 save(?) 463 save(?)
357 preferences 464 preferences
358 shift-cursor in schnauzer
359 465
360=head1 AUTHOR 466=head1 AUTHOR
361 467
362Marc Lehmann <cv@plan9.de>. 468Marc Lehmann <cv@plan9.de>.
363 469

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