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