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#!/opt/bin/perl |
| 2 |
|
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BEGIN { |
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# work around libraries (and perl) outputting numbers in weird formats |
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# when they shouldn't. this is somewhat brutal - better suggestions |
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# appreciated. |
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$ENV{LC_NUMERIC} = "C"; |
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$ENV{LANG} = delete $ENV{LC_ALL} if exists $ENV{LC_ALL}; |
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} |
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|
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BEGIN { |
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require Gtk2::CV::Plugin; |
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require "$ENV{HOME}/.cvrc" if -r "$ENV{HOME}/.cvrc"; |
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} |
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|
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use common::sense; |
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|
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use Cwd (); |
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use Encode (); |
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use File::Glob (); |
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use Scalar::Util (); |
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|
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use Gtk2; |
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use Gtk2::Gdk::Keysyms; |
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|
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use Gtk2::CV; |
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|
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use Gtk2::CV::ImageWindow; |
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use Gtk2::CV::Schnauzer; |
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|
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use Carp (); $Carp::MaxArgLen = 256; |
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|
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use Gtk2::CV::Plugin::NameCluster; |
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use Gtk2::CV::Plugin::RCluster; |
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use Gtk2::CV::Plugin::PatRenamer; |
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use Gtk2::CV::Plugin::MetaCluster; |
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|
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use AnyEvent::Fork::Template; |
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|
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Gtk2::CV::Jobber::set_template $AnyEvent::Fork::Template; |
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|
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# now we can initialize Gtk2 etc. |
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init Gtk2; |
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|
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Gtk2::Rc->parse (Gtk2::CV::find_rcfile "gtkrc"); |
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|
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use File::Spec; |
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|
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my $mainwin; |
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my $viewer; |
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my $viewer_count; |
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my $schnauzer; |
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my $info; |
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my $help; |
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|
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my $schnauzer_idx = 0; |
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|
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sub new_schnauzer { |
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my $s = new Gtk2::CV::Schnauzer; |
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|
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$s->signal_connect_after (key_press_event => \&std_keys); |
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$s->signal_connect (activate => sub { |
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my $label = sprintf "%s (%d)", |
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(Glib::filename_display_name +(File::Spec->splitpath ($_[1]))[2]), |
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-s $_[1]; |
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$info->set_label ($label); |
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$viewer->load_image ($_[1]) if $viewer; # TODO: error, or chose ANY viewer |
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}); |
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|
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Gtk2::CV::Plugin->call (new_schnauzer => $s); |
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|
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$s |
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} |
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|
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our %VIEWER; # global viewer container so we can propagate signals |
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|
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$SIG{USR1} = sub { |
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# I assume glib calls us in a safe enough context to create an idle watcher |
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add Glib::Idle sub { |
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$_->reload for values %VIEWER; |
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0 |
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}; |
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}; |
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|
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sub new_viewer { |
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my $self = new Gtk2::CV::ImageWindow; |
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|
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Scalar::Util::weaken ($VIEWER{$self+0} = $self); |
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|
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$viewer_count++; |
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|
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$self->set_title ("CV: Image"); |
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|
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$self->signal_connect (key_press_event => sub { |
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$viewer = $_[0]; |
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|
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my $key = $_[1]->keyval; |
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my $state = $_[1]->state; |
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|
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if ($state * "control-mask" && $key == $Gtk2::Gdk::Keysyms{c}) { |
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my $viewer = new_viewer (); |
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$viewer->set_image ($_[0]->{image}); |
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$viewer->show_all; |
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1 |
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} else { |
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&std_keys |
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or $schnauzer->signal_emit (key_press_event => $_[1]) |
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} |
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}); |
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$self->signal_connect (delete_event => sub { $_[0]->destroy; 0 }); |
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$self->signal_connect (destroy => sub { |
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delete $VIEWER{$_[0]+0}; |
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$viewer = undef if $viewer == $_[0]; |
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|
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main_quit Gtk2 unless --$viewer_count; |
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|
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0 |
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}); |
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|
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$self->signal_connect (button3_press_event => sub { |
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$mainwin->visible |
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? $mainwin->hide |
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: $mainwin->show_all; |
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|
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1 |
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}); |
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|
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Gtk2::CV::Plugin->call (new_imagewindow => $self); |
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|
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$self |
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} |
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|
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sub std_keys { |
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my $key = $_[1]->keyval; |
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my $state = $_[1]->state; |
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|
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my $ctrl = $state * "control-mask"; |
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|
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if ($key == $Gtk2::Gdk::Keysyms{q}) { |
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$viewer->destroy; |
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} elsif ($ctrl && $key == $Gtk2::Gdk::Keysyms{v}) { |
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my $w = new Gtk2::Window; |
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|
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$w->set_role ("schnauzer"); |
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$w->set_title ("CV: Schnauzer"); |
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$w->add (my $s = new_schnauzer); |
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$s->set_dir (File::Spec->curdir); |
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$s->set_geometry_hints; |
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$w->show_all; |
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|
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} elsif ($ctrl && $key == $Gtk2::Gdk::Keysyms{h}) { |
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unless ($help) { |
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require Gtk2::Ex::PodViewer; |
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|
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$help = new Gtk2::Window; |
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$help->set_role ("help"); |
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$help->set_title ("CV: Help"); |
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$help->set_default_size (500, 300); |
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$help->signal_connect (delete_event => sub { $help->hide; 1 }); |
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|
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$help->add (my $sw = new Gtk2::ScrolledWindow); |
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$sw->add (my $h = new Gtk2::Ex::PodViewer); |
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|
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#binmode DATA, ":utf8"; |
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$h->load_string (do { local $/; <DATA> }); |
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} |
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|
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$help->show_all; |
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} elsif (!$state && $Gtk2::Gdk::Keysyms{a} <= $key && $key <= $Gtk2::Gdk::Keysyms{z}) { |
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# |
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} else { |
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return 0; |
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} |
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|
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1 |
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} |
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|
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&cvrc_boot if defined &cvrc_boot; |
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|
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{ |
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$viewer = new_viewer; |
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$::cur_viewer = $viewer; |
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|
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$schnauzer = new_schnauzer; |
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|
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$mainwin = new Gtk2::Window; |
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$mainwin->set_role ("main"); |
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$mainwin->set_title ("CV"); |
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$mainwin->add (my $vbox = new Gtk2::VBox); |
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$mainwin->signal_connect (delete_event => sub { $mainwin->hide; 1 }); |
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|
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$vbox->add ($schnauzer); |
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$vbox->pack_end (my $frame = new Gtk2::Frame, 0, 0, 0); |
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$frame->add (my $hbox = new Gtk2::HBox 0, 0); |
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$hbox->pack_start ((new Gtk2::Label "Info: "), 0, 0, 0); |
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$hbox->pack_end (my $labelwindow = new Gtk2::EventBox, 1, 1, 0); |
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$labelwindow->add ($info = new Gtk2::Label); |
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$labelwindow->signal_connect_after (size_request => sub { $_[1]->width (0); 0 }); |
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$info->set (selectable => 1, xalign => 0, justify => "left"); |
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|
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$schnauzer->set_geometry_hints; |
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} |
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|
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if (@ARGV) { |
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my $show_first = sub { |
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$schnauzer->show_all; |
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|
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# activate first file, but avoid dirs |
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my $entry = $schnauzer->{entry}[0]; |
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my $path = "$entry->[0]/$entry->[1]"; |
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|
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$schnauzer->handle_key ($Gtk2::Gdk::Keysyms{space}, new Gtk2::Gdk::ModifierType []) |
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unless -d $path; |
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|
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$viewer->show_all; |
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}; |
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|
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if (@ARGV == 1 && $ARGV[0] eq "-0r") { |
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local $/; |
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$schnauzer->set_paths ([split /\x00/, <STDIN>], 1, $show_first); |
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} elsif (@ARGV == 1 && -d $ARGV[0]) { |
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$schnauzer->set_dir (shift, $show_first); |
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} else { |
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if ($ARGV[0] eq "-g") { |
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shift @ARGV; |
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@ARGV = map +(File::Glob::bsd_glob $_, File::Glob::GLOB_BRACE | File::Glob::GLOB_QUOTE), @ARGV; |
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} |
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$schnauzer->set_paths ([@ARGV], 1, $show_first); |
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} |
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} else { |
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$schnauzer->set_dir (File::Spec->curdir, sub { |
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$mainwin->show_all; |
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$viewer->show_all; |
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}); |
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} |
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|
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&cvrc_start if defined &cvrc_start; |
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|
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main Gtk2; |
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|
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Gtk2::CV::flush_aio; |
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|
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__DATA__ |
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|
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=encoding utf-8 |
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|
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=head1 NAME |
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|
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cv - a fast gtk+ image viewer loosely modeled after XV |
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|
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=head1 SYNOPSIS |
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|
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cv |
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|
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cv directory |
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|
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cv path... |
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|
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cv -g <glob expression...> |
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|
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find .. -print0 | cv -0r |
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|
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=head1 FEATURES |
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|
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CV is supposed to work similar to the venerable XV image viewer, just |
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faster. Why faster? |
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|
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=over 4 |
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|
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=item * optimized directory scanning algorithm |
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|
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The directory scanning in CV uses some tricks that - on most modern |
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filesystems - makes it possible to detect filetypes faster than stat()'ing |
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every file. This makes CV suitable for directories with lots of files |
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(10000+). |
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|
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This algorithm is quite unprecise - it doesn't make a difference between |
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files, device nodes, symlinks and the like, and filetype detection is done |
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using the file extension only. |
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|
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On the positive side, it is usually many orders of magnitude faster than |
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traditional scanning techniques (good for directories with 10000 or |
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100000+ files). |
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|
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=item * queuing for all time-consuming background tasks |
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|
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All tasks, such as unlinking files or generating thumbnails, that can be |
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done in the background will be done so - no waiting required, even when |
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changing directories. |
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|
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=item * use of asynchronous I/O |
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|
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CV tries to use asynchronous I/O whereever it makes sense, for example |
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while scanning directories, waiting for stat data, unlinking files or |
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generating thumbnails. This usually decreases scanning times for large |
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directories a bit (especially on RAID devices and over NFS) and makes CV |
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much more interactive. |
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|
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=item * fast image loading |
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|
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The time span between the user issuing a command and displaying the new |
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image should be as small as possible. CV uses optimized (especially |
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for JPEG) loading functions and sacrifices some quality (e.g no gamma |
| 304 |
correction, although this might change) to achieve this speed. |
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|
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=item * fast thumbnail creation |
| 307 |
|
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Thumbnail creation uses both CPU and Disk-I/O. CV interleaves both, so |
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on modern CPUs, thumbnailing is usually limited by I/O speed. Thumbnail |
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creation for JPEGs has been specially optimized and can even take |
| 311 |
advantage of multiple CPUs. |
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|
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=item * minimum optical clutter |
| 314 |
|
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CV has no menus or other user interface elements that take up a lot of |
| 316 |
screen space (or are useful for beginning users). The schnauzer windows |
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can also be somewhat crowded. |
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|
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The point of an image viewer is viewing images, not a nice GUI. This is |
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similar to XV's behaviour. |
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|
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=item * efficient (and hard to learn) user interface |
| 323 |
|
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CV uses key combinations. A lot. If you are an experienced XV user, you |
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will find most of these keys familiar. If not, CV might be hard to use at |
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first, but will be an efficient tool later. |
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|
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=item * multi-window GUI |
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|
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CV doesn't force you to use a specific layout, instead it relies on your |
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window manager, thus enabling you to chose whatever layout that suits you |
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most. |
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|
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=item * i18n'ed filename handling throughout |
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|
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As long as glib can recognize your filename encoding (either UTF-8 or |
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locale-specific, depending on the setting of G_BROKEN_FILENAMES) and you |
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have the relevant fonts, CV will display your filenames correctly. |
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|
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=item * extensible through plug-ins |
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|
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I have weird plug-ins that access remote databases to find a |
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directory. This is not likely to be of any use to other people. Likewise, |
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others might have weird requirements I cannot dream of. |
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|
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=item * filename clustering |
| 347 |
|
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Among the standard plug-ins is a filename clustering plug-in, that (in |
| 349 |
case of tens of thousands images in one directory) might be able to |
| 350 |
cluster similar names together. |
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|
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=back |
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|
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=head1 DESCRIPTION |
| 355 |
|
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=head2 THE IMAGE WINDOW |
| 357 |
|
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You can use the following keys in the image window: |
| 359 |
|
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q quit the program |
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< half the image size |
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> double the image size |
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, shrink the image by 10% |
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. enlarge the image by 10% |
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n reset to normal size |
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m maximize to screensize |
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M maximize to screensize, respecting image aspect |
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ctrl-m toggle maxpect-always mode |
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ctrl-sift-m toggle using current image size as max image size |
| 370 |
u uncrop |
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r set scaling mode to 'nearest' (fastest) |
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s set scaling mode to 'bilinear' (default) |
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shift-s set scaling mode to 'hyper' (slowest) |
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t rotate clockwise 90° |
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T rotate counterclockwise° |
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a apply all rotations loslessly to a jpeg file (using exiftran) |
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ctrl-shift-t apply current rotation for future image loads |
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ctrl-v open a new visual schnauzer window for the current dir |
| 379 |
ctrl-c clone the current image window |
| 380 |
ctrl-e run an editor ($CV_EDITOR or "gimp") on the current image |
| 381 |
ctrl-p fire up the print dialog |
| 382 |
ctrl-shift-p same as ctrl-p, but automatically selects "ok" |
| 383 |
escape cancel a crop action |
| 384 |
|
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And when playing movies, these additional keys are active: |
| 386 |
|
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left rewind by 10 seconds |
| 388 |
right forward by 10 seconds |
| 389 |
down rewind by 60 seconds |
| 390 |
up forward by 60 seconds |
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pg_up rewind by 600 seconds |
| 392 |
pg_down forward by 600 seconds |
| 393 |
o toggle on-screen display |
| 394 |
p pause/unpause |
| 395 |
escape stop playing |
| 396 |
9 turn volume down |
| 397 |
0 turn volume up |
| 398 |
|
| 399 |
Any other keys will be sent to the default schnauzer window, which can be |
| 400 |
toggled on and off by right-clicking into the image window. |
| 401 |
|
| 402 |
Left-clicking into the image window will let you crop the image (usually |
| 403 |
to zoom into large images that CV scales down). |
| 404 |
|
| 405 |
=head2 THE VISUAL SCHNAUZER |
| 406 |
|
| 407 |
Any image-loading action in a schnauzer window acts on the |
| 408 |
"last-recently-activated" imagewindow, which currently is simply the last |
| 409 |
image window that received a keypress. |
| 410 |
|
| 411 |
You can use the following keys in the schnauzer window: |
| 412 |
|
| 413 |
ctrl-space, |
| 414 |
space move to and display next image |
| 415 |
ctrl-backspace, |
| 416 |
backspace move to and display previous image |
| 417 |
ctrl-return, |
| 418 |
return display selected picture, or enter directory |
| 419 |
|
| 420 |
cursor keys move selection |
| 421 |
page-up move one page up |
| 422 |
page-down move one page down |
| 423 |
home move to first file |
| 424 |
end move to last file |
| 425 |
|
| 426 |
ctrl-a select all files |
| 427 |
ctrl-shift-a select all files currently displayed in the schnauzer window |
| 428 |
ctrl-d delete selected files WITHOUT ASKING AGAIN |
| 429 |
ctrl-g force generation of thumbnails for the selected files |
| 430 |
ctrl-shift-g remove thumbnails for the selected files |
| 431 |
ctrl-s rescan current direcory or files updates/deletes etc. |
| 432 |
ctrl-u update selected (or all) icons if neccessary |
| 433 |
ctrl-- unselected thumbnailed images |
| 434 |
ctrl-+ keep only thumbnailed images, deselect others |
| 435 |
|
| 436 |
^ go to parent directory (caret). |
| 437 |
|
| 438 |
0-9, |
| 439 |
a-z find the first filename beginning with this letter |
| 440 |
|
| 441 |
Right-clicking into the schnauzer window displays a pop-up menu with |
| 442 |
additional actions. |
| 443 |
|
| 444 |
=head3 SELECTION |
| 445 |
|
| 446 |
You can select entries in the Schnauzer in a variety of ways: |
| 447 |
|
| 448 |
=over 4 |
| 449 |
|
| 450 |
=item Keyboard |
| 451 |
|
| 452 |
Moving the cursor with the keyboard will first deselect all files and then |
| 453 |
select the file you moved to. |
| 454 |
|
| 455 |
=item Clicking |
| 456 |
|
| 457 |
Clicking on an entry will select the one you clicked and deselect all |
| 458 |
others. |
| 459 |
|
| 460 |
=item Shift-Clicking |
| 461 |
|
| 462 |
Shift-clicking will toggle the selection on the entry under the mouse. |
| 463 |
|
| 464 |
=item Dragging |
| 465 |
|
| 466 |
Dragging will select all entries between the one selected when pushing the |
| 467 |
button and the one selected when releasing the button. If you move above |
| 468 |
or below the schnauzer area while drag-selecting, the schnauzer will move |
| 469 |
up/down one row twice per second. In addition, horizontal mouse movement |
| 470 |
acts as a kind of invisible horizontal scrollbar. |
| 471 |
|
| 472 |
=item Hint: double-click works while click-selecting |
| 473 |
|
| 474 |
You can double-click any image while click-selecting to display it |
| 475 |
without stopping the selection process. This will act as if you normally |
| 476 |
double-clicked the image to display it, and will toggle the selection |
| 477 |
twice, resulting in no change. |
| 478 |
|
| 479 |
=back |
| 480 |
|
| 481 |
=head1 FILES |
| 482 |
|
| 483 |
When starting, CV runs the F<.cvrc> file in your F<$HOME> directory as if |
| 484 |
it were a perl script. in that, you will mostly load plug-ins. |
| 485 |
|
| 486 |
Example: |
| 487 |
|
| 488 |
system "fping -q -t 10 ether" |
| 489 |
or require "/fs/cv/cvplugin.pl"; |
| 490 |
|
| 491 |
This will load a plug-in, but only if the machine I<ether> is reachable |
| 492 |
(supposedly the plug-in is networked in some way :). |
| 493 |
|
| 494 |
=head1 ENVIRONMENT VARIABLES |
| 495 |
|
| 496 |
=over 4 |
| 497 |
|
| 498 |
=item CV_EDITOR |
| 499 |
|
| 500 |
The program that gets executed when the user presses C<CTRL-e> in the |
| 501 |
Schnauzer or image window. The default is C<gimp>. |
| 502 |
|
| 503 |
=item CV_AUDIO_PLAYER |
| 504 |
|
| 505 |
EXPERIMENTAL: audio playback is now via mpv, this variable is currently |
| 506 |
ignored. |
| 507 |
|
| 508 |
Program used to play all sorts of audio (wav, aif, mp3, ogg...), default "play". |
| 509 |
Will be called like C<< $CV_AUDIO_PLAYER -- <path> >>. |
| 510 |
|
| 511 |
=item CV_MPLAYER |
| 512 |
|
| 513 |
Program used to play all sorts of video files. Unlike C<CV_AUDIO_PLAYER>, |
| 514 |
this really must be some version of the C<mpv> programs, or something that |
| 515 |
is very command-line compatible to them. |
| 516 |
|
| 517 |
Note: for video-thumbnailing, mplayer is still used (and hardcoded). |
| 518 |
|
| 519 |
=item CV_PRINT_DESTINATION |
| 520 |
|
| 521 |
The default (perl-style) destination to use in the print dialog. |
| 522 |
|
| 523 |
=item CV_TRASHCAN |
| 524 |
|
| 525 |
When set, must point to a directory where all files that are deleted by |
| 526 |
the "Delete Physically" (ctrl-d) action are moved to (other deletion |
| 527 |
actions still delete!). If unset, files that are deleted are really being |
| 528 |
deleted. |
| 529 |
|
| 530 |
=back |
| 531 |
|
| 532 |
=head1 SIGNALS |
| 533 |
|
| 534 |
Sending CV a SIGUSR1 signal will cause all image viewers to reload the |
| 535 |
currently loaded image. This is useful if you use CV as a viewer for |
| 536 |
changing data - just run it in the background with some path and each time |
| 537 |
the image changes, send it a SIGUSR1. |
| 538 |
|
| 539 |
=head1 SECURITY CONSIDERATIONS |
| 540 |
|
| 541 |
CV uses Pixbuf to load non-JPEG images. Pixbuf is not considered safe for |
| 542 |
this purpose, though (from the gtk-2.2 release notes): |
| 543 |
|
| 544 |
"While efforts have been made to make gdk-pixbuf robust against invalid |
| 545 |
images, using gdk-pixbuf to load untrusted data is not recommended, due to |
| 546 |
the likelyhood that there are additional problems where an invalid image |
| 547 |
could cause gdk-pixbuf to crash or worse." |
| 548 |
|
| 549 |
=head1 BUGS/TODO |
| 550 |
|
| 551 |
Lots of functionality is missing. |
| 552 |
|
| 553 |
Pixbuf doesn't always honor G_BROKEN_FILENAMES, so accessing files with |
| 554 |
names incompatible with utf-8 might fail. |
| 555 |
|
| 556 |
rotate on disk |
| 557 |
lots of ui issues |
| 558 |
save(?) |
| 559 |
preferences |
| 560 |
|
| 561 |
=head1 AUTHOR |
| 562 |
|
| 563 |
Marc Lehmann <cv@plan9.de>. |
| 564 |
|
| 565 |
=cut |
| 566 |
|
