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