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

Comparing CV/bin/cv (file contents):
Revision 1.23 by root, Wed Nov 12 00:59:02 2003 UTC vs.
Revision 1.73 by root, Thu Nov 22 08:52:57 2007 UTC

1	#!/opt/bin/perl	1	#!/opt/bin/perl
		2
		3	use Cwd ();
		4	use Encode ();
		5	use File::Glob ();
2		6
3	use Gtk2 -init;	7	use Gtk2 -init;
4	use Gtk2::Gdk::Keysyms;	8	use Gtk2::Gdk::Keysyms;
5		9
		10	use Gtk2::CV;
		11
6	use Gtk2::CV::ImageWindow;	12	use Gtk2::CV::ImageWindow;
7	use Gtk2::CV::Schnauzer;	13	use Gtk2::CV::Schnauzer;
8		14
9	use Gtk2::CV;	15	BEGIN {
		16	require Gtk2::CV::Plugin;
		17	require "$ENV{HOME}/.cvrc" if -r "$ENV{HOME}/.cvrc";
		18	}
		19
		20	use Gtk2::CV::Plugin::NameCluster;
		21	use Gtk2::CV::Plugin::RCluster;
10		22
11	Gtk2::Rc->parse (Gtk2::CV::find_rcfile "gtkrc");	23	Gtk2::Rc->parse (Gtk2::CV::find_rcfile "gtkrc");
12		24
13	use File::Spec;	25	use File::Spec;
14		26
15	my $mainwin;	27	my $mainwin;
16	my $viewer;	28	my $viewer;
		29	my $viewer_count;
17	my $schnauzer;	30	my $schnauzer;
18	my $info;	31	my $info;
19	my $help;	32	my $help;
		33
		34	my $schnauzer_idx = 0;
20		35
21	sub new_schnauzer {	36	sub new_schnauzer {
22	my $s = new Gtk2::CV::Schnauzer;	37	my $s = new Gtk2::CV::Schnauzer;
23		38
24	$s->signal_connect_after (key_press_event => \&std_keys);	39	$s->signal_connect_after (key_press_event => \&std_keys);
25	$s->signal_connect (activate => sub {	40	$s->signal_connect (activate => sub {
26	my $label = sprintf "%s (%d)",	41	my $label = sprintf "%s (%d)",
27	(File::Spec->splitpath ($_[1]))[2],	42	(File::Spec->splitpath ($_[1]))[2],
28	-s $_[1];	43	-s $_[1];
29	$info->set_label ($label);	44	$info->set_label ($label);
30	$viewer->load_image ($_[1]);	45	$viewer->load_image ($_[1]) if $viewer; # TODO: error, or chose ANY viewer
31	});	46	});
32		47
		48	Gtk2::CV::Plugin->call (new_schnauzer => $s);
		49
33	$s;	50	$s
		51	}
		52
		53	sub new_viewer {
		54	my $self = new Gtk2::CV::ImageWindow;
		55
		56	$viewer_count++;
		57
		58	$self->set_title ("CV: Image");
		59
		60	$self->signal_connect (key_press_event => sub {
		61	$viewer = $_[0];
		62
		63	my $key = $_[1]->keyval;
		64	my $state = $_[1]->state;
		65
		66	if ($state * "control-mask" && $key == $Gtk2::Gdk::Keysyms{c}) {
		67	my $viewer = new_viewer ();
		68	$viewer->set_image ($_[0]->{image});
		69	$viewer->show_all;
		70	1
		71	} else {
		72	&std_keys
		73	or $schnauzer->signal_emit (key_press_event => $_[1])
		74	}
		75	});
		76	$self->signal_connect (delete_event => sub { $_[0]->destroy; 0 });
		77	$self->signal_connect (destroy => sub {
		78	$viewer = undef if $viewer == $_[0];
		79
		80	main_quit Gtk2 unless --$viewer_count;
		81
		82	0
		83	});
		84
		85	$self->signal_connect (button3_press_event => sub {
		86	$mainwin->visible
		87	? $mainwin->hide
		88	: $mainwin->show_all;
		89
		90	1
		91	});
		92
		93	Gtk2::CV::Plugin->call (new_imagewindow => $self);
		94
		95	$self
34	}	96	}
35		97
36	sub std_keys {	98	sub std_keys {
37	my $key = $_[1]->keyval;	99	my $key = $_[1]->keyval;
38	my $state = $_[1]->state;	100	my $state = $_[1]->state;
39		101
40	my $ctrl = $state * "control-mask";	102	my $ctrl = $state * "control-mask";
41		103
42	if ($key == $Gtk2::Gdk::Keysyms{q}) {	104	if ($key == $Gtk2::Gdk::Keysyms{q}) {
43	main_quit Gtk2;	105	$viewer->destroy;
44	} elsif ($ctrl && $key == $Gtk2::Gdk::Keysyms{v}) {	106	} elsif ($ctrl && $key == $Gtk2::Gdk::Keysyms{v}) {
45	my $w = new Gtk2::Window;	107	my $w = new Gtk2::Window;
		108
		109	$w->set_role ("schnauzer");
		110	$w->set_title ("CV: Schnauzer");
46	$w->add (my $s = new_schnauzer);	111	$w->add (my $s = new_schnauzer);
47	$s->set_dir (File::Spec->curdir);	112	$s->set_dir (File::Spec->curdir);
		113	$s->set_geometry_hints;
48	$w->show_all;	114	$w->show_all;
		115
49	} elsif ($ctrl && $key == $Gtk2::Gdk::Keysyms{h}) {	116	} elsif ($ctrl && $key == $Gtk2::Gdk::Keysyms{h}) {
50	unless ($help) {	117	unless ($help) {
51	require Gtk2::PodViewer;	118	require Gtk2::Ex::PodViewer;
52		119
53	$help = new Gtk2::Window;	120	$help = new Gtk2::Window;
		121	$help->set_role ("help");
54	$help->set_title ("CV Help");	122	$help->set_title ("CV: Help");
55	$help->set_default_size (500, 300);	123	$help->set_default_size (500, 300);
56	$help->signal_connect (delete_event => sub { $help->hide; 1 });	124	$help->signal_connect (delete_event => sub { $help->hide; 1 });
57		125
58	$help->add (my $sw = new Gtk2::ScrolledWindow);	126	$help->add (my $sw = new Gtk2::ScrolledWindow);
59	$sw->add (my $h = new Gtk2::PodViewer);	127	$sw->add (my $h = new Gtk2::Ex::PodViewer);
60		128
61	#binmode DATA, ":utf8";	129	#binmode DATA, ":utf8";
62	$h->load_string (do { local $/; <DATA> });	130	$h->load_string (do { local $/; <DATA> });
63	}	131	}
64		132
65	$help->show_all;	133	$help->show_all;
66	} else {	134	} else {
67	#$mainwin->show_all;	135	return 0;
68	$schnauzer->handle_key ($key, $state);
69	}	136	}
70		137
71	1;	138	1
72	}	139	}
73		140
74	{	141	{
75	$viewer = new Gtk2::CV::ImageWindow;	142	$viewer = new_viewer;
76		143	$::cur_viewer = $viewer;
77	$viewer->set_title ("CV: Image");
78
79	$viewer->signal_connect (key_press_event => \&std_keys);
80	$viewer->signal_connect (delete_event => sub { main_quit Gtk2 });
81
82	$viewer->signal_connect (button3_press_event => sub {
83	$mainwin->visible
84	? $mainwin->hide
85	: $mainwin->show_all;
86	1;
87	});
88		144
89	$schnauzer = new_schnauzer;	145	$schnauzer = new_schnauzer;
90		146
91	$mainwin = new Gtk2::Window;	147	$mainwin = new Gtk2::Window;
		148	$mainwin->set_role ("main");
92	$mainwin->set_title ("CV");	149	$mainwin->set_title ("CV");
93	$mainwin->add (my $vbox = new Gtk2::VBox);	150	$mainwin->add (my $vbox = new Gtk2::VBox);
94	$mainwin->signal_connect (delete_event => sub { $mainwin->hide; 1; });	151	$mainwin->signal_connect (delete_event => sub { $mainwin->hide; 1 });
95		152
96	$vbox->add ($schnauzer);	153	$vbox->add ($schnauzer);
97	$vbox->pack_end (my $frame = new Gtk2::Frame, 0, 0, 0);	154	$vbox->pack_end (my $frame = new Gtk2::Frame, 0, 0, 0);
98	$frame->add (my $hbox = new Gtk2::HBox 0, 0);	155	$frame->add (my $hbox = new Gtk2::HBox 0, 0);
99	$hbox->pack_start ((new Gtk2::Label "Info"), 0, 0, 0);	156	$hbox->pack_start ((new Gtk2::Label "Info: "), 0, 0, 0);
100	$hbox->pack_start (($info = new Gtk2::Label), 1, 1, 0);	157	$hbox->pack_end (my $labelwindow = new Gtk2::EventBox, 1, 1, 0);
		158	$labelwindow->add ($info = new Gtk2::Label);
		159	$labelwindow->signal_connect_after (size_request => sub { $_[1]->width (0); 0 });
		160	$info->set (selectable => 1, xalign => 0, justify => "left");
		161
		162	$schnauzer->set_geometry_hints;
101	}	163	}
102		164
103	if (@ARGV) {	165	if (@ARGV) {
104	$schnauzer->set_paths (\@ARGV);	166	my $show_first = sub {
		167	$schnauzer->show_all;
105	$schnauzer->handle_key ($Gtk2::Gdk::Keysyms{space}, []);	168	$schnauzer->handle_key ($Gtk2::Gdk::Keysyms{space}, []);
		169	$viewer->show_all;
		170	};
		171
		172	if (@ARGV == 1 && $ARGV[0] eq "-0r") {
		173	local $/;
		174	$schnauzer->set_paths ([map Glib::filename_to_unicode $_, split /\x00/, <STDIN>], 1, $show_first);
		175	} elsif (@ARGV == 1 && -d $ARGV[0]) {
		176	$schnauzer->set_dir (Glib::filename_to_unicode shift, $show_first);
		177	} else {
		178	if ($ARGV[0] eq "-g") {
		179	shift @ARGV;
		180	@ARGV = map +(File::Glob::bsd_glob $_, File::Glob::GLOB_BRACE \| File::Glob::GLOB_QUOTE), @ARGV;
		181	}
		182	$schnauzer->set_paths ([map Glib::filename_to_unicode $_, @ARGV], 1, $show_first);
		183	}
106	} else {	184	} else {
107	$schnauzer->set_dir (File::Spec->curdir);	185	$schnauzer->set_dir (File::Spec->curdir, sub {
108	$mainwin->show_all;	186	$mainwin->show_all;
109	}
110
111	$viewer->show_all;	187	$viewer->show_all;
		188	});
		189	}
112		190
113	main Gtk2;	191	main Gtk2;
114		192
		193	Gtk2::CV::flush_aio;
		194
115	__DATA__	195	__DATA__
116		196
		197	=encoding utf-8
		198
117	=head1 NAME	199	=head1 NAME
118		200
119	cv - a fast gtk+ image viewer modeled after xv	201	cv - a fast gtk+ image viewer loosely modeled after XV
120		202
121	=head1 SYNOPSIS	203	=head1 SYNOPSIS
122		204
123	cv [file...]	205	cv [file...]
124		206
		207	=head1 FEATURES
		208
		209	CV is supposed to work similar to the venerable XV image viewer, just
		210	faster. Why faster?
		211
		212	=over 4
		213
		214	=item * optimized directory scanning algorithm
		215
		216	The directory scanning in CV uses some tricks that - on most modern
		217	filesystems - makes it possible to detect filetypes faster than stat()'ing
		218	every file. This makes CV suitable for directories with lots of files
		219	(10000+).
		220
		221	This algorithm is quite unprecise - it doesn't make a difference between
		222	files, device nodes, symlinks and the like, and filetype detection is done
		223	using the file extension only.
		224
		225	On the positive side, it is usually many orders of magnitude faster than
		226	traditional scanning techniques (good for directories with 10000 or
		227	100000+ files).
		228
		229	=item * queuing for all time-consuming background tasks
		230
		231	All tasks, such as unlinking files or generating thumbnails, that can be
		232	done in the background will be done so - no waiting required, even when
		233	changing directories.
		234
		235	=item * use of asynchronous I/O
		236
		237	CV tries to use asynchronous I/O whereever it makes sense, for example
		238	while scanning directories, waiting for stat data, unlinking files or
		239	generating thumbnails. This usually decreases scanning times for large
		240	directories a bit (especially on RAID devices and over NFS) and makes CV
		241	much more interactive.
		242
		243	=item * fast image loading
		244
		245	The time span between the user issuing a command and displaying the new
		246	image should be as small as possible. CV uses optimized (especially
		247	for JPEG) loading functions and sacrifices some quality (e.g no gamma
		248	correction, although this might change) to achieve this speed.
		249
		250	=item * fast thumbnail creation
		251
		252	Thumbnail creation uses both CPU and Disk-I/O. CV interleaves both, so
		253	on modern CPUs, thumbnailing is usually limited by I/O speed. Thumbnail
		254	creation for JPEGs has been specially optimized and can even take
		255	advantage of multiple CPUs.
		256
		257	=item * minimum optical clutter
		258
		259	CV has no menus or other user interface elements that take up a lot of
		260	screen space (or are useful for beginning users). The schnauzer windows
		261	can also be somewhat crowded.
		262
		263	The point of an image viewer is viewing images, not a nice GUI. This is
		264	similar to XV's behaviour.
		265
		266	=item * efficient (and hard to learn) user interface
		267
		268	CV uses key combinations. A lot. If you are an experienced XV user, you
		269	will find most of these keys familiar. If not, CV might be hard to use at
		270	first, but will be an efficient tool later.
		271
		272	=item * multi-window GUI
		273
		274	CV doesn't force you to use a specific layout, instead it relies on your
		275	window manager, thus enabling you to chose whatever layout that suits you
		276	most.
		277
		278	=item * i18n'ed filename handling throughout
		279
		280	As long as glib can recognize your filename encoding (either UTF-8 or
		281	locale-specific, depending on the setting of G_BROKEN_FILENAMES) and you
		282	have the relevant fonts, CV will display your filenames correctly.
		283
		284	=item * extensible through plug-ins
		285
		286	I have weird plug-ins that access remote databases to find a
		287	directory. This is not likely to be of any use to other people. Likewise,
		288	others might have weird requirements I cannot dream of.
		289
		290	=item * filename clustering
		291
		292	Among the standard plug-ins is a filename clustering plug-in, that (in
		293	case of tens of thousands images in one directory) might be able to
		294	cluster similar names together.
		295
		296	=back
		297
125	=head1 DESCRIPTION	298	=head1 DESCRIPTION
126		299
127	None yet.
128
129	=head2 THE IMAGE WINDOW	300	=head2 THE IMAGE WINDOW
130		301
131	You can use the following keys in the image window:	302	You can use the following keys in the image window:
132		303
133	q quit the program	304	q quit the program
134	< half the image size	305	< half the image size
135	> double the image size	306	> double the image size
136	, shrink the image by 10%	307	, shrink the image by 10%
137	. enlarge the image by 10%	308	. enlarge the image by 10%
138	n reset to normal size	309	n reset to normal size
139	m maximize to screensize	310	m maximize to screensize
140	M maxime to screensize, respecting image aspect	311	M maximize to screensize, respecting image aspect
		312	ctrl-m toggle maxpect-always mode
		313	ctrl-sift-m toggle using current image size as max image size
141	u uncrop	314	u uncrop
142	r set scaling mode to 'nearest' (fastest)	315	r set scaling mode to 'nearest' (fastest)
143	s set scaling mode to 'bilinear' (default)	316	s set scaling mode to 'bilinear' (default)
144	S set scaling mode to 'hyper' (slowest)	317	shift-s set scaling mode to 'hyper' (slowest)
145	t rotate clockwise 90°	318	t rotate clockwise 90°
146	T rotate counterclockwise°	319	T rotate counterclockwise°
		320	a apply all rotations loslessly to a jpeg file (using exiftran)
147	ctrl-v open a new visual schnauzer window for the current dir	321	ctrl-v open a new visual schnauzer window for the current dir
		322	ctrl-c clone the current image window
		323	ctrl-e run an editor ($CV_EDITOR or "gimp") on the current image
		324	ctrl-p fire up the print dialog
		325	escape cancel a crop action
148		326
149	The following keys are redirected to the default visual schnauzer window:	327	And when playing movies, these additional keys are active:
150		328
151	space next image	329	left rewind by 10 seconds
152	backspace last image	330	right forward by 10 seconds
		331	down rewind by 60 seconds
		332	up forward by 60 seconds
		333	pg_up rewind by 600 seconds
		334	pg_down forward by 600 seconds
		335	o toggle on-screen display
		336	p pause/unpause
		337	escape stop playing
		338	9 turn volume down
		339	0 turn volume up
		340
		341	Any other keys will be sent to the default schnauzer window, which can be
		342	toggled on and off by right-clicking into the image window.
		343
		344	Left-clicking into the image window will let you crop the image (usually
		345	to zoom into large images that CV scales down).
153		346
154	=head2 THE VISUAL SCHNAUZER	347	=head2 THE VISUAL SCHNAUZER
155		348
		349	Any image-loading action in a schnauzer window acts on the
		350	"last-recently-activated" imagewindow, which currently is simply the last
		351	image window that received a keypress.
		352
156	You can use the following keys in the schnauzer window:	353	You can use the following keys in the schnauzer window:
157		354
		355	ctrl-space,
158	space move to and display next image	356	space move to and display next image
		357	ctrl-backspace,
159	backspace move to and display previous image	358	backspace move to and display previous image
		359	ctrl-return,
160	return display selected picture	360	return display selected picture, or enter directory
161		361
162	cursor keys move selection	362	cursor keys move selection
163	page-up move one page up	363	page-up move one page up
164	page-down move one page down	364	page-down move one page down
165	home move to first file	365	home move to first file
166	end move to last file	366	end move to last file
167		367
168	ctrl-g generate icons for the selected files	368	ctrl-a select all files
		369	ctrl-shift-a select all files currently displayed in the schnauzer window
169	ctrl-d delete selected files WITHOUT ASKING AGAIN	370	ctrl-d delete selected files WITHOUT ASKING AGAIN
		371	ctrl-g force generation of thumbnais for the selected files
		372	ctrl-s rescan current direcory or files updates/deletes etc.
		373	ctrl-u update selected (or all) icons if neccessary
		374	ctrl-l don't use, will become a plug-in eventually
		375
		376	^ go to parent directory (caret).
		377
		378	0-9,
		379	a-z find the first filename beginning with this letter
		380
		381	Right-clicking into the schnauzer window displays a pop-up menu with
		382	additional actions.
		383
		384	=head3 SELECTION
		385
		386	You can select entries in the Schnauzer in a variety of ways:
		387
		388	=over 4
		389
		390	=item Keyboard
		391
		392	Moving the cursor with the keyboard will first deselect all files and then
		393	select the file you moved to.
		394
		395	=item Clicking
		396
		397	Clicking on an entry will select the one you clicked and deselect all
		398	others.
		399
		400	=item Shift-Clicking
		401
		402	Shift-clicking will toggle the selection on the entry under the mouse.
		403
		404	=item Dragging
		405
		406	Dragging will select all entries between the one selected when pushing the
		407	button and the one selected when releasing the button. If you move above
		408	or below the schnauzer area while drag-selecting, the schnauzer will move
		409	up/down one row twice per second. In addition, horizontal mouse movement
		410	acts as a kind of invisible horizontal scrollbar.
		411
		412	=item Hint: double-click works while click-selecting
		413
		414	You can double-click any image while click-selecting to display it
		415	without stopping the selection process. This will act as if you normally
		416	double-clicked the image to display it, and will toggle the selection
		417	twice, resulting in no change.
		418
		419	=back
		420
		421	=head1 FILES
		422
		423	When starting, CV runs the F<.cvrc> file in your F<$HOME> directory as if
		424	it were a perl script. in that, you will mostly load plug-ins.
		425
		426	Example:
		427
		428	system "fping -q -t 10 ether"
		429	or require "/fs/cv/cvplugin.pl";
		430
		431	This will load a plug-in, but only if the machine I<ether> is reachable
		432	(supposedly the plug-in is networked in some way :).
		433
		434	=head1 ENVIRONMENT
		435
		436	=over 4
		437
		438	=item CV_EDITOR
		439
		440	The program that gets executed when the user presses C<CTRL-e> in the
		441	Schnauzer or image window. The default is C<gimp>.
		442
		443	=item CV_AUDIO_PLAYER
		444
		445	Program used to play all sorts of audio (wav, aif, mp3, ogg...), default "play".
		446	Will be called like C<< $CV_AUDIO_PLAYER -- <path> >>.
		447
		448	=item CV_PRINT_DESTINATION
		449
		450	The default (perl-style) destination to use in the print dialog.
		451
		452	=item CV_TRASHCAN
		453
		454	When set, must point to a directory where all files that are deleted are
		455	moved to. If unset, files that are deleted are really being deleted.
		456
		457	=back
170		458
171	=head1 SECURITY CONSIDERATIONS	459	=head1 SECURITY CONSIDERATIONS
172		460
173	CV uses Pixbuf to load images. Pixbuf is not considered safe for this	461	CV uses Pixbuf to load non-JPEG images. Pixbuf is not considered safe for
174	purpose, though (from the gtk-2.2 release notes):	462	this purpose, though (from the gtk-2.2 release notes):
175		463
176	"While efforts have been made to make gdk-pixbuf robust against invalid	464	"While efforts have been made to make gdk-pixbuf robust against invalid
177	images, using gdk-pixbuf to load untrusted data is not recommended, due to	465	images, using gdk-pixbuf to load untrusted data is not recommended, due to
178	the likelyhood that there are additional problems where an invalid image	466	the likelyhood that there are additional problems where an invalid image
179	could cause gdk-pixbuf to crash or worse."	467	could cause gdk-pixbuf to crash or worse."
180		468
181	=head1 BUGS/TODO	469	=head1 BUGS/TODO
182		470
		471	Lots of functionality is missing.
		472
183	Pixbuf doesn't honor G_BROKEN_FILENAMES, so accessing files with names	473	Pixbuf doesn't always honor G_BROKEN_FILENAMES, so accessing files with
184	incompatible with utf-8 fails.	474	names incompatible with utf-8 might fail.
185		475
186	rotate on disk	476	rotate on disk
187	print
188	lots of ui issues	477	lots of ui issues
189	save(?)	478	save(?)
190	preferences	479	preferences
191	ctrl-u in schnauzer
192	shift-cursor in schnauzer
193		480
194	=head1 AUTHOR	481	=head1 AUTHOR
195		482
196	Marc Lehmann <cv@plan9.de>.	483	Marc Lehmann <cv@plan9.de>.
197		484

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Comparing CV/bin/cv (file contents): Revision 1.23 by root, Wed Nov 12 00:59:02 2003 UTC vs. Revision 1.73 by root, Thu Nov 22 08:52:57 2007 UTC

Diff Legend

Comparing CV/bin/cv (file contents):
Revision 1.23 by root, Wed Nov 12 00:59:02 2003 UTC vs.
Revision 1.73 by root, Thu Nov 22 08:52:57 2007 UTC