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