[ViewVC] Diff of: cvs/CV/bin/cv

Comparing CV/bin/cv (file contents):
Revision 1.34 by root, Mon Feb 7 13:52:30 2005 UTC vs.
Revision 1.67 by root, Mon Mar 20 04:18:01 2006 UTC

…		…
1	#!/opt/bin/perl	1	#!/opt/bin/perl
		2
		3	use Cwd ();
		4	use Encode ();
2		5
3	use Gtk2 -init;	6	use Gtk2 -init;
4	use Gtk2::Gdk::Keysyms;	7	use Gtk2::Gdk::Keysyms;
5		8
		9	use Gtk2::CV;
		10
6	use Gtk2::CV::ImageWindow;	11	use Gtk2::CV::ImageWindow;
7	use Gtk2::CV::Schnauzer;	12	use Gtk2::CV::Schnauzer;
8		13
9	use Gtk2::CV;	14	BEGIN {
		15	require Gtk2::CV::Plugin;
		16	require "$ENV{HOME}/.cvrc" if -r "$ENV{HOME}/.cvrc";
		17	}
		18
		19	use Gtk2::CV::Plugin::NameCluster;
		20	use Gtk2::CV::Plugin::RCluster;
10		21
11	Gtk2::Rc->parse (Gtk2::CV::find_rcfile "gtkrc");	22	Gtk2::Rc->parse (Gtk2::CV::find_rcfile "gtkrc");
12		23
13	use File::Spec;	24	use File::Spec;
14		25
15	my $mainwin;	26	my $mainwin;
16	my $viewer;	27	my $viewer;
		28	my $viewer_count;
17	my $schnauzer;	29	my $schnauzer;
18	my $info;	30	my $info;
19	my $help;	31	my $help;
20		32
21	my $schnauzer_idx = 0;	33	my $schnauzer_idx = 0;
27	$s->signal_connect (activate => sub {	39	$s->signal_connect (activate => sub {
28	my $label = sprintf "%s (%d)",	40	my $label = sprintf "%s (%d)",
29	(File::Spec->splitpath ($_[1]))[2],	41	(File::Spec->splitpath ($_[1]))[2],
30	-s $_[1];	42	-s $_[1];
31	$info->set_label ($label);	43	$info->set_label ($label);
32	$viewer->load_image ($_[1]);	44	$viewer->load_image ($_[1]) if $viewer; # TODO: error, or chose ANY viewer
33	});	45	});
34		46
		47	Gtk2::CV::Plugin->call (new_schnauzer => $s);
		48
35	$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 (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
36	}	95	}
37		96
38	sub std_keys {	97	sub std_keys {
39	my $key = $_[1]->keyval;	98	my $key = $_[1]->keyval;
40	my $state = $_[1]->state;	99	my $state = $_[1]->state;
41		100
42	my $ctrl = $state * "control-mask";	101	my $ctrl = $state * "control-mask";
43		102
44	if ($key == $Gtk2::Gdk::Keysyms{q}) {	103	if ($key == $Gtk2::Gdk::Keysyms{q}) {
45	main_quit Gtk2;	104	$viewer->destroy;
46	} elsif ($ctrl && $key == $Gtk2::Gdk::Keysyms{v}) {	105	} elsif ($ctrl && $key == $Gtk2::Gdk::Keysyms{v}) {
47	my $w = new Gtk2::Window;	106	my $w = new Gtk2::Window;
48		107
		108	$w->set_role ("schnauzer");
49	$w->set_title ("CV: Schnauzer");	109	$w->set_title ("CV: Schnauzer");
50	$w->add (my $s = new_schnauzer);	110	$w->add (my $s = new_schnauzer);
51	$s->set_dir (File::Spec->curdir);	111	$s->set_dir (File::Spec->curdir);
52	$s->set_geometry_hints;	112	$s->set_geometry_hints;
53	$w->show_all;	113	$w->show_all;
…		…
55	} elsif ($ctrl && $key == $Gtk2::Gdk::Keysyms{h}) {	115	} elsif ($ctrl && $key == $Gtk2::Gdk::Keysyms{h}) {
56	unless ($help) {	116	unless ($help) {
57	require Gtk2::PodViewer;	117	require Gtk2::PodViewer;
58		118
59	$help = new Gtk2::Window;	119	$help = new Gtk2::Window;
		120	$help->set_role ("help");
60	$help->set_title ("CV: Help");	121	$help->set_title ("CV: Help");
61	$help->set_default_size (500, 300);	122	$help->set_default_size (500, 300);
62	$help->signal_connect (delete_event => sub { $help->hide; 1 });	123	$help->signal_connect (delete_event => sub { $help->hide; 1 });
63		124
64	$help->add (my $sw = new Gtk2::ScrolledWindow);	125	$help->add (my $sw = new Gtk2::ScrolledWindow);
…		…
68	$h->load_string (do { local $/; <DATA> });	129	$h->load_string (do { local $/; <DATA> });
69	}	130	}
70		131
71	$help->show_all;	132	$help->show_all;
72	} else {	133	} else {
73	#$mainwin->show_all;	134	return 0;
74	$schnauzer->handle_key ($key, $state);
75	}	135	}
76		136
77	1;	137	1
78	}	138	}
79		139
80	{	140	{
81	$viewer = new Gtk2::CV::ImageWindow;	141	$viewer = new_viewer;
82		142	$::cur_viewer = $viewer;
83	$viewer->set_title ("CV: Image");
84
85	$viewer->signal_connect (key_press_event => \&std_keys);
86	$viewer->signal_connect (delete_event => sub { main_quit Gtk2 });
87
88	$viewer->signal_connect (button3_press_event => sub {
89	$mainwin->visible
90	? $mainwin->hide
91	: $mainwin->show_all;
92	1;
93	});
94		143
95	$schnauzer = new_schnauzer;	144	$schnauzer = new_schnauzer;
96		145
97	$mainwin = new Gtk2::Window;	146	$mainwin = new Gtk2::Window;
		147	$mainwin->set_role ("main");
98	$mainwin->set_title ("CV");	148	$mainwin->set_title ("CV");
99	$mainwin->add (my $vbox = new Gtk2::VBox);	149	$mainwin->add (my $vbox = new Gtk2::VBox);
100	$mainwin->signal_connect (delete_event => sub { $mainwin->hide; 1; });	150	$mainwin->signal_connect (delete_event => sub { $mainwin->hide; 1 });
101		151
102	$vbox->add ($schnauzer);	152	$vbox->add ($schnauzer);
103	$vbox->pack_end (my $frame = new Gtk2::Frame, 0, 0, 0);	153	$vbox->pack_end (my $frame = new Gtk2::Frame, 0, 0, 0);
104	$frame->add (my $hbox = new Gtk2::HBox 0, 0);	154	$frame->add (my $hbox = new Gtk2::HBox 0, 0);
105	$hbox->pack_start ((new Gtk2::Label "Info"), 0, 0, 0);	155	$hbox->pack_start ((new Gtk2::Label "Info: "), 0, 0, 0);
106	$hbox->pack_start (($info = new Gtk2::Label), 1, 1, 0);	156	$hbox->pack_end (my $labelwindow = new Gtk2::EventBox, 1, 1, 0);
		157	$labelwindow->add ($info = new Gtk2::Label);
		158	$labelwindow->signal_connect_after (size_request => sub { $_[1]->width (0); 0 });
		159	$info->set (selectable => 1, xalign => 0, justify => "left");
107		160
108	$schnauzer->set_geometry_hints;	161	$schnauzer->set_geometry_hints;
109	}	162	}
110		163
111	if (@ARGV) {	164	if (@ARGV) {
112	$_ = Glib::filename_to_unicode $_ for @ARGV;	165	@ARGV == 1 && -d $ARGV[0]
113	$schnauzer->set_paths (\@ARGV);	166	? $schnauzer->set_dir (Glib::filename_to_unicode shift)
		167	: $schnauzer->set_paths ([map Glib::filename_to_unicode $_, @ARGV], 1);
114	$schnauzer->show_all;	168	$schnauzer->show_all;
115	$viewer->show_all;
116	$schnauzer->handle_key ($Gtk2::Gdk::Keysyms{space}, []);	169	$schnauzer->handle_key ($Gtk2::Gdk::Keysyms{space}, []);
117	} else {	170	} else {
118	$schnauzer->set_dir (File::Spec->curdir);	171	$schnauzer->set_dir (File::Spec->curdir);
119	$mainwin->show_all;	172	$mainwin->show_all;
		173	}
		174
120	$viewer->show_all;	175	$viewer->show_all;
121	}
122		176
123	main Gtk2;	177	main Gtk2;
124		178
125	__DATA__	179	__DATA__
126		180
		181	=encoding utf-8
		182
127	=head1 NAME	183	=head1 NAME
128		184
129	cv - a fast gtk+ image viewer modeled after xv	185	cv - a fast gtk+ image viewer loosely modeled after XV
130		186
131	=head1 SYNOPSIS	187	=head1 SYNOPSIS
132		188
133	cv [file...]	189	cv [file...]
134		190
		191	=head1 FEATURES
		192
		193	CV is supposed to work similar to the venerable XV image viewer, just
		194	faster. Why faster?
		195
		196	=over 4
		197
		198	=item * optimized directory scanning algorithm
		199
		200	The directory scanning in CV uses some tricks that - on most modern
		201	filesystems - makes it possible to detect filetypes faster than stat()'ing
		202	every file. This makes CV suitable for directories with lots of files
		203	(10000+).
		204
		205	This algorithm is quite unprecise - it doesn't make a difference between
		206	files, device nodes, symlinks and the like, and filetype detection is done
		207	using the file extension only.
		208
		209	On the positive side, it is usually many orders of magnitude faster than
		210	traditional scanning techniques (good for directories with 10000 or
		211	100000+ files).
		212
		213	=item * queuing for all time-consuming background tasks
		214
		215	All tasks, such as unlinking files or generating thumbnails, that can be
		216	done in the background will be done so - no waiting required, even when
		217	changing directories.
		218
		219	=item * use of asynchronous I/O
		220
		221	CV tries to use asynchronous I/O whereever it makes sense, for example
		222	while scanning directories, waiting for stat data, unlinking files or
		223	generating thumbnails. This usually decreases scanning times for large
		224	directories a bit (especially on RAID devices and over NFS) and makes CV
		225	much more interactive.
		226
		227	=item * fast image loading
		228
		229	The time span between the user issuing a command and displaying the new
		230	image should be as small as possible. CV uses optimized (especially
		231	for JPEG) loading functions and sacrifices some quality (e.g no gamma
		232	correction, although this might change) to achieve this speed.
		233
		234	=item * fast thumbnail creation
		235
		236	Thumbnail creation uses both CPU and Disk-I/O. CV interleaves both, so
		237	on modern CPUs, thumbnailing is usually limited by I/O speed. Thumbnail
		238	creation for JPEGs has been specially optimized and can even take
		239	advantage of multiple CPUs.
		240
		241	=item * minimum optical clutter
		242
		243	CV has no menus or other user interface elements that take up a lot of
		244	screen space (or are useful for beginning users). The schnauzer windows
		245	can also be somewhat crowded.
		246
		247	The point of an image viewer is viewing images, not a nice GUI. This is
		248	similar to XV's behaviour.
		249
		250	=item * efficient (and hard to learn) user interface
		251
		252	CV uses key combinations. A lot. If you are an experienced XV user, you
		253	will find most of these keys familiar. If not, CV might be hard to use at
		254	first, but will be an efficient tool later.
		255
		256	=item * multi-window GUI
		257
		258	CV doesn't force you to use a specific layout, instead it relies on your
		259	window manager, thus enabling you to chose whatever layout that suits you
		260	most.
		261
		262	=item * i18n'ed filename handling throughout
		263
		264	As long as glib can recognize your filename encoding (either UTF-8 or
		265	locale-specific, depending on the setting of G_BROKEN_FILENAMES) and you
		266	have the relevant fonts, CV will display your filenames correctly.
		267
		268	=item * extensible through plug-ins
		269
		270	I have weird plug-ins that access remote databases to find a
		271	directory. This is not likely to be of any use to other people. Likewise,
		272	others might have weird requirements I cannot dream of.
		273
		274	=item * filename clustering
		275
		276	Among the standard plug-ins is a filename clustering plug-in, that (in
		277	case of tens of thousands images in one directory) might be able to
		278	cluster similar names together.
		279
		280	=back
		281
135	=head1 DESCRIPTION	282	=head1 DESCRIPTION
136		283
137	None yet.
138
139	=head2 THE IMAGE WINDOW	284	=head2 THE IMAGE WINDOW
140		285
141	You can use the following keys in the image window:	286	You can use the following keys in the image window:
142		287
143	q quit the program	288	q quit the program
144	< half the image size	289	< half the image size
145	> double the image size	290	> double the image size
146	, shrink the image by 10%	291	, shrink the image by 10%
147	. enlarge the image by 10%	292	. enlarge the image by 10%
148	n reset to normal size	293	n reset to normal size
149	m maximize to screensize	294	m maximize to screensize
150	M maxime to screensize, respecting image aspect	295	M maximize to screensize, respecting image aspect
151	ctrl-m toggle maxpect-always mode	296	ctrl-m toggle maxpect-always mode
		297	ctrl-sift-m toggle using current image size as max image size
152	u uncrop	298	u uncrop
153	r set scaling mode to 'nearest' (fastest)	299	r set scaling mode to 'nearest' (fastest)
154	s set scaling mode to 'bilinear' (default)	300	s set scaling mode to 'bilinear' (default)
155	S set scaling mode to 'hyper' (slowest)	301	shift-s set scaling mode to 'hyper' (slowest)
156	t rotate clockwise 90°	302	t rotate clockwise 90°
157	T rotate counterclockwise°	303	T rotate counterclockwise°
		304	a apply all rotations loslessly to a jpeg file (using exiftran)
158	ctrl-v open a new visual schnauzer window for the current dir	305	ctrl-v open a new visual schnauzer window for the current dir
159	ctrl-s rescan visual schnauzer files for updates/deletes etc.	306	ctrl-c clone the current image window
160	ctrl-e run an editor ($CV_EDITOR or "gimp") on the current image.	307	ctrl-e run an editor ($CV_EDITOR or "gimp") on the current image
		308	ctrl-p fire up the print dialog
		309	escape cancel a crop action
161		310
162	And when playing movies, these additional keys are active:	311	And when playing movies, these additional keys are active:
163		312
164	left rewind by 10 seconds	313	left rewind by 10 seconds
165	right forward by 10 seconds	314	right forward by 10 seconds
166	down rewind by 60 seconds	315	down rewind by 60 seconds
167	up forward by 60 seconds	316	up forward by 60 seconds
168	pg_up rewind by 600 seconds	317	pg_up rewind by 600 seconds
169	pg_down forward by 600 seconds	318	pg_down forward by 600 seconds
170	o toggle on-screen display	319	o toggle on-screen display
171	p pause/unpause	320	p pause/unpause
172	escape stop playing	321	escape stop playing
173	9 turn volume down	322	9 turn volume down
174	0 turn volume up	323	0 turn volume up
175		324
176	The following keys are redirected to the default visual schnauzer window:	325	Any other keys will be sent to the default schnauzer window, which can be
		326	toggled on and off by right-clicking into the image window.
177		327
178	space next image	328	Left-clicking into the image window will let you crop the image (usually
179	backspace last image	329	to zoom into large images that CV scales down).
180		330
181	=head2 THE VISUAL SCHNAUZER	331	=head2 THE VISUAL SCHNAUZER
182		332
		333	Any image-loading action in a schnauzer window acts on the
		334	"last-recently-activated" imagewindow, which currently is simply the last
		335	image window that received a keypress.
		336
183	You can use the following keys in the schnauzer window:	337	You can use the following keys in the schnauzer window:
184		338
		339	ctrl-space,
185	space move to and display next image	340	space move to and display next image
		341	ctrl-backspace,
186	backspace move to and display previous image	342	backspace move to and display previous image
		343	ctrl-return,
187	return display selected picture	344	return display selected picture, or enter directory
188		345
189	cursor keys move selection	346	cursor keys move selection
190	page-up move one page up	347	page-up move one page up
191	page-down move one page down	348	page-down move one page down
192	home move to first file	349	home move to first file
193	end move to last file	350	end move to last file
194		351
		352	ctrl-a select all files
		353	ctrl-shift-a select all files currently displayed in the schnauzer window
195	ctrl-d delete selected files WITHOUT ASKING AGAIN	354	ctrl-d delete selected files WITHOUT ASKING AGAIN
196	ctrl-g generate icons for the selected files	355	ctrl-g force generation of thumbnais for the selected files
		356	ctrl-s rescan current direcory or files updates/deletes etc.
197	ctrl-u update selected (or all) icons if neccessary	357	ctrl-u update selected (or all) icons if neccessary
198	ctrl-a select all files	358	ctrl-l don't use, will become a plug-in eventually
		359
		360	^ go to parent directory (caret).
		361
		362	0-9,
		363	a-z find the first filename beginning with this letter
		364
		365	Right-clicking into the schnauzer window displays a pop-up menu with
		366	additional actions.
		367
		368	=head3 SELECTION
		369
		370	You can select entries in the Schnauzer in a variety of ways:
		371
		372	=over 4
		373
		374	=item Keyboard
		375
		376	Moving the cursor with the keyboard will first deselect all files and then
		377	select the file you moved to.
		378
		379	=item Clicking
		380
		381	Clicking on an entry will select the one you clicked and deselect all
		382	others.
		383
		384	=item Shift-Clicking
		385
		386	Shift-clicking will toggle the selection on the entry under the mouse.
		387
		388	=item Dragging
		389
		390	Dragging will select all entries between the one selected when pushing the
		391	button and the one selected when releasing the button. If you move above
		392	or below the schnauzer area while drag-selecting, the schnauzer will move
		393	up/down one row twice per second. In addition, horizontal mouse movement
		394	acts as a kind of invisible horizontal scrollbar.
		395
		396	=item Hint: double-click works while click-selecting
		397
		398	You can double-click any image while click-selecting to display it
		399	without stopping the selection process. This will act as if you normally
		400	double-clicked the image to display it, and will toggle the selection
		401	twice, resulting in no change.
		402
		403	=back
		404
		405	=head1 FILES
		406
		407	When starting, CV runs the F<.cvrc> file in your F<$HOME> directory as if
		408	it were a perl script. in that, you will mostly load plug-ins.
		409
		410	Example:
		411
		412	system "fping -q -t 10 ether"
		413	or require "/fs/cv/cvplugin.pl";
		414
		415	This will load a plug-in, but only if the machine I<ether> is reachable
		416	(supposedly the plug-in is networked in some way :).
199		417
200	=head1 ENVIRONMENT	418	=head1 ENVIRONMENT
201		419
202	=over 4	420	=over 4
203		421
		422	=item CV_EDITOR
		423
		424	The program that gets executed when the user presses C<CTRL-e> in the
		425	Schnauzer or image window. The default is C<gimp>.
		426
204	=item CV_PRINT_DESTINATION	427	=item CV_PRINT_DESTINATION
205		428
206	The default (perl-style) destination to use in the print dialog.	429	The default (perl-style) destination to use in the print dialog.
207		430
		431	=item CV_TRASHCAN
		432
		433	When set, must point to a directory where all files that are deleted are
		434	moved to. If unset, files that are deleted are really being deleted.
		435
208	=back	436	=back
209		437
210	=head1 SECURITY CONSIDERATIONS	438	=head1 SECURITY CONSIDERATIONS
211		439
212	CV uses Pixbuf to load images. Pixbuf is not considered safe for this	440	CV uses Pixbuf to load non-JPEG images. Pixbuf is not considered safe for
213	purpose, though (from the gtk-2.2 release notes):	441	this purpose, though (from the gtk-2.2 release notes):
214		442
215	"While efforts have been made to make gdk-pixbuf robust against invalid	443	"While efforts have been made to make gdk-pixbuf robust against invalid
216	images, using gdk-pixbuf to load untrusted data is not recommended, due to	444	images, using gdk-pixbuf to load untrusted data is not recommended, due to
217	the likelyhood that there are additional problems where an invalid image	445	the likelyhood that there are additional problems where an invalid image
218	could cause gdk-pixbuf to crash or worse."	446	could cause gdk-pixbuf to crash or worse."
219		447
220	=head1 BUGS/TODO	448	=head1 BUGS/TODO
221		449
		450	Lots of functionality is missing.
		451
222	Pixbuf doesn't honor G_BROKEN_FILENAMES, so accessing files with names	452	Pixbuf doesn't always honor G_BROKEN_FILENAMES, so accessing files with
223	incompatible with utf-8 fails.	453	names incompatible with utf-8 might fail.
224		454
225	rotate on disk	455	rotate on disk
226	print
227	lots of ui issues	456	lots of ui issues
228	save(?)	457	save(?)
229	preferences	458	preferences
230	ctrl-u in schnauzer
231	shift-cursor in schnauzer
232		459
233	=head1 AUTHOR	460	=head1 AUTHOR
234		461
235	Marc Lehmann <cv@plan9.de>.	462	Marc Lehmann <cv@plan9.de>.
236		463

Diff Legend

-–
+Removed lines
-+
+Added lines
-<
+Changed lines
->
+Changed lines

Comparing CV/bin/cv (file contents): Revision 1.34 by root, Mon Feb 7 13:52:30 2005 UTC vs. Revision 1.67 by root, Mon Mar 20 04:18:01 2006 UTC

Diff Legend

Comparing CV/bin/cv (file contents):
Revision 1.34 by root, Mon Feb 7 13:52:30 2005 UTC vs.
Revision 1.67 by root, Mon Mar 20 04:18:01 2006 UTC