| 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 | |
| 6 | use Gtk2::CV::ImageWindow; |
9 | use Gtk2::CV::ImageWindow; |
| 7 | use Gtk2::CV::Schnauzer; |
10 | use Gtk2::CV::Schnauzer; |
| 8 | |
11 | |
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12 | use Gtk2::CV; |
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13 | |
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14 | Gtk2::Rc->parse (Gtk2::CV::find_rcfile "gtkrc"); |
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15 | |
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16 | use File::Spec; |
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17 | |
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18 | require Gtk2::CV::Plugin; |
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19 | require "$ENV{HOME}/.cvrc" if -r "$ENV{HOME}/.cvrc"; |
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20 | |
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21 | my $mainwin; |
| 9 | my $viewer; |
22 | my $viewer; |
| 10 | my $schnauzer; |
23 | my $schnauzer; |
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24 | my $info; |
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25 | my $help; |
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26 | |
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27 | my $schnauzer_idx = 0; |
| 11 | |
28 | |
| 12 | sub new_schnauzer { |
29 | sub new_schnauzer { |
| 13 | my $w = new Gtk2::Window; |
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| 14 | $w->add (my $s = new Gtk2::CV::Schnauzer); |
30 | my $s = new Gtk2::CV::Schnauzer; |
| 15 | |
31 | |
| 16 | $s->signal_connect (activate => sub { $viewer->load_image ($_[1]) }); |
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| 17 | $s->signal_connect_after (key_press_event => \&std_keys); |
32 | $s->signal_connect_after (key_press_event => \&std_keys); |
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33 | $s->signal_connect (activate => sub { |
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34 | my $label = sprintf "%s (%d)", |
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35 | (File::Spec->splitpath ($_[1]))[2], |
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36 | -s $_[1]; |
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37 | $info->set_label ($label); |
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38 | $viewer->load_image ($_[1]); |
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39 | }); |
| 18 | |
40 | |
| 19 | $s->set_dir ("."); |
41 | Gtk2::CV::Plugin->call (new_schnauzer => $s); |
| 20 | $w->show_all; |
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| 21 | |
42 | |
| 22 | $s; |
43 | $s; |
| 23 | } |
44 | } |
| 24 | |
45 | |
| 25 | sub std_keys { |
46 | sub std_keys { |
| 26 | my $key = $_[1]->keyval; |
47 | my $key = $_[1]->keyval; |
| 27 | my $state = $_[1]->state; |
48 | my $state = $_[1]->state; |
| 28 | |
49 | |
| 29 | my $ctrl = grep $_ eq "control-mask", @$state; |
50 | my $ctrl = $state * "control-mask"; |
| 30 | |
51 | |
| 31 | if ($key == $Gtk2::Gdk::Keysyms{q}) { |
52 | if ($key == $Gtk2::Gdk::Keysyms{q}) { |
| 32 | main_quit Gtk2; |
53 | main_quit Gtk2; |
| 33 | } elsif ($ctrl && $key == $Gtk2::Gdk::Keysyms{v}) { |
54 | } elsif ($ctrl && $key == $Gtk2::Gdk::Keysyms{v}) { |
| 34 | new_schnauzer; |
55 | my $w = new Gtk2::Window; |
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56 | |
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57 | $w->set_title ("CV: Schnauzer"); |
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58 | $w->add (my $s = new_schnauzer); |
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59 | $s->set_dir (File::Spec->curdir); |
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60 | $s->set_geometry_hints; |
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61 | $w->show_all; |
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62 | |
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63 | } elsif ($ctrl && $key == $Gtk2::Gdk::Keysyms{h}) { |
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64 | unless ($help) { |
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65 | require Gtk2::PodViewer; |
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66 | |
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67 | $help = new Gtk2::Window; |
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68 | $help->set_title ("CV: Help"); |
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69 | $help->set_default_size (500, 300); |
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70 | $help->signal_connect (delete_event => sub { $help->hide; 1 }); |
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71 | |
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72 | $help->add (my $sw = new Gtk2::ScrolledWindow); |
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73 | $sw->add (my $h = new Gtk2::PodViewer); |
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74 | |
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75 | #binmode DATA, ":utf8"; |
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76 | $h->load_string (do { local $/; <DATA> }); |
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77 | } |
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78 | |
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79 | $help->show_all; |
| 35 | } else { |
80 | } else { |
| 36 | $schnauzer->handle_key ($key, $state); |
81 | return 0; |
| 37 | } |
82 | } |
| 38 | |
83 | |
| 39 | 1; |
84 | 1 |
| 40 | } |
85 | } |
| 41 | |
86 | |
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87 | { |
| 42 | $viewer = new Gtk2::CV::ImageWindow; |
88 | $viewer = new Gtk2::CV::ImageWindow; |
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89 | |
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90 | $viewer->set_title ("CV: Image"); |
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91 | |
| 43 | $viewer->signal_connect (key_press_event => \&std_keys); |
92 | $viewer->signal_connect (key_press_event => sub { |
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93 | &std_keys |
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94 | or $schnauzer->signal_emit (key_press_event => $_[1]) |
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95 | }); |
| 44 | $viewer->signal_connect (delete_event => sub { main_quit Gtk2 }); |
96 | $viewer->signal_connect (delete_event => sub { main_quit Gtk2 }); |
| 45 | |
97 | |
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98 | $viewer->signal_connect (button3_press_event => sub { |
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99 | $mainwin->visible |
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100 | ? $mainwin->hide |
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101 | : $mainwin->show_all; |
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102 | 1; |
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103 | }); |
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104 | |
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105 | Gtk2::CV::Plugin->call (new_imagewindow => $viewer); |
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106 | |
| 46 | $schnauzer = new_schnauzer; |
107 | $schnauzer = new_schnauzer; |
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108 | |
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109 | $mainwin = new Gtk2::Window; |
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110 | $mainwin->set_title ("CV"); |
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111 | $mainwin->add (my $vbox = new Gtk2::VBox); |
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112 | $mainwin->signal_connect (delete_event => sub { $mainwin->hide; 1; }); |
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113 | |
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114 | $vbox->add ($schnauzer); |
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115 | $vbox->pack_end (my $frame = new Gtk2::Frame, 0, 0, 0); |
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116 | $frame->add (my $hbox = new Gtk2::HBox 0, 0); |
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117 | $hbox->pack_start ((new Gtk2::Label "Info: "), 0, 0, 0); |
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118 | $hbox->pack_end (my $labelwindow = new Gtk2::EventBox, 1, 1, 0); |
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119 | $labelwindow->add ($info = new Gtk2::Label); |
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120 | $labelwindow->signal_connect_after (size_request => sub { $_[1]->width (0); 0 }); |
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121 | $info->set (selectable => 1, xalign => 0, justify => "left"); |
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122 | |
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123 | $schnauzer->set_geometry_hints; |
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124 | } |
| 47 | |
125 | |
| 48 | if (@ARGV) { |
126 | if (@ARGV) { |
| 49 | $viewer->load_image ($ARGV[0]); |
127 | $schnauzer->set_paths ([map Glib::filename_to_unicode $_, @ARGV]); |
| 50 | |
128 | $schnauzer->show_all; |
| 51 | if (@ARGV > 1) { |
129 | $viewer->show_all; |
| 52 | $schnauzer->set_paths (\@ARGV); |
130 | $schnauzer->handle_key ($Gtk2::Gdk::Keysyms{space}, []); |
| 53 | } |
131 | } else { |
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132 | $schnauzer->set_dir (File::Spec->curdir); |
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133 | $mainwin->show_all; |
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134 | $viewer->show_all; |
| 54 | } |
135 | } |
| 55 | |
136 | |
| 56 | $viewer->show_all; |
137 | $viewer->show_all; |
| 57 | |
138 | |
| 58 | main Gtk2; |
139 | main Gtk2; |
| 59 | |
140 | |
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141 | __DATA__ |
| 60 | |
142 | |
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143 | =head1 NAME |
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144 | |
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145 | cv - a fast gtk+ image viewer loosely modeled after XV |
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146 | |
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147 | =head1 SYNOPSIS |
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148 | |
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149 | cv [file...] |
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150 | |
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151 | =head1 FEATURES |
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152 | |
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153 | CV is supposed to work similar to the venerable XV image viewer, just |
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154 | faster. Why faster? |
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155 | |
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156 | =over 4 |
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157 | |
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158 | =item * optimized directory scanning algorithm |
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159 | |
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160 | The directory scanning in CV plays some tricks that - on most modern |
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161 | filesystems - makes it possible to detect filetypes faster than stat()'ing |
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162 | every file. This makes CV suitable for directories with lots of files |
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163 | (10000+). |
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164 | |
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165 | This algorithm is quite unprecise - it doesn't make a difference between |
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166 | files, device nodes, symlinks and the like, and filetype detection is done |
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167 | using the file extension only. |
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168 | |
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169 | =item * use of asynchronous I/O |
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170 | |
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171 | CV tries to use asynchronous I/O whereever it makes sense, for example |
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172 | while scanning directories, waiting for stat data or unlinking files. This |
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173 | usually decreases scanning times for large directories a bit (especially |
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174 | on RAID devices and over NFS). |
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175 | |
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176 | =item * fast image loading |
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177 | |
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178 | The time span between the user issuing a command and displaying the new |
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179 | image should be as small as possible. CV uses optimized (especially |
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180 | for JPEG) loading functions and sacrifices some quality (e.g no gamma |
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181 | correction) to achieve this speed. |
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182 | |
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183 | =item * fast thumbnail creation |
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184 | |
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185 | Thumbnail creation is crucial for me, so it's better be fast. Thumbnail |
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186 | creation for JPEGs has been specially optimized. |
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187 | |
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188 | =item * minimum optical clutter |
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189 | |
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190 | CV has no menus or other user interface elements that take up a lot of |
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191 | screen space. The schnauzer windows can also be somewhat crowded. |
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192 | |
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193 | The point of an image viewer is viewing images, not a nice GUI. This is |
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194 | similar to XV's behaviour. |
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195 | |
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196 | =item * efficient (and hard to learn) user interface |
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197 | |
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198 | CV uses key combinations. A lot. If you are an experienced XV user, you |
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199 | will find most of these keys familiar. If not, CV might be hard to use at |
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200 | first, but will be an efficient tool later. |
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201 | |
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202 | =item * i18n'ed filename handling throughout |
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203 | |
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204 | As long as glib can recognize your filename encoding (either UTF-8 or |
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205 | locale-specific, depending on your settings) and you have the relevant |
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206 | fonts, CV will display your filenames correctly. |
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207 | |
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208 | =item * extensible through plug-ins |
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209 | |
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210 | I have weird plug-ins that access remote databases to find a |
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211 | directory. This is not likely to be of any use to other people. Likewise, |
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212 | others might have weird requirements I cannot dream of. |
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213 | |
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214 | =item * filename clustering |
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215 | |
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216 | Among the standard plug-ins is a filename clustering plug-in, that (in |
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217 | case of tens of thousands images in one directory) might be able to |
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218 | cluster similar names together. |
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219 | |
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220 | =back |
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221 | |
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222 | =head1 DESCRIPTION |
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223 | |
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224 | =head2 THE IMAGE WINDOW |
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225 | |
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226 | You can use the following keys in the image window: |
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227 | |
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228 | q quit the program |
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229 | < half the image size |
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230 | > double the image size |
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231 | , shrink the image by 10% |
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232 | . enlarge the image by 10% |
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233 | n reset to normal size |
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234 | m maximize to screensize |
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235 | M maximize to screensize, respecting image aspect |
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236 | ctrl-m toggle maxpect-always mode |
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237 | u uncrop |
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238 | r set scaling mode to 'nearest' (fastest) |
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239 | s set scaling mode to 'bilinear' (default) |
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240 | shift-s set scaling mode to 'hyper' (slowest) |
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241 | t rotate clockwise 90° |
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242 | T rotate counterclockwise° |
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243 | ctrl-v open a new visual schnauzer window for the current dir |
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244 | ctrl-e run an editor ($CV_EDITOR or "gimp") on the current image |
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245 | ctrl-p fire up the print fialog |
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246 | escape cancel a crop action |
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247 | |
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248 | And when playing movies, these additional keys are active: |
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249 | |
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250 | left rewind by 10 seconds |
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251 | right forward by 10 seconds |
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252 | down rewind by 60 seconds |
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253 | up forward by 60 seconds |
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254 | pg_up rewind by 600 seconds |
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255 | pg_down forward by 600 seconds |
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256 | o toggle on-screen display |
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257 | p pause/unpause |
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258 | escape stop playing |
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259 | 9 turn volume down |
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260 | 0 turn volume up |
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261 | |
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262 | Any other keys will be sent to the default schnauzer window, which can be |
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263 | toggled on and off by right-clicking into the image window. |
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264 | |
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265 | Left-clicking into the image window will let you crop the image (usually |
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266 | to zoom into large images that CV scales down). |
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267 | |
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268 | =head2 THE VISUAL SCHNAUZER |
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269 | |
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270 | You can use the following keys in the schnauzer window: |
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271 | |
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272 | ctrl-space, |
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273 | space move to and display next image |
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274 | ctrl-backspace, |
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275 | backspace move to and display previous image |
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276 | ctrl-return, |
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277 | return display selected picture, or enter directory |
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278 | |
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279 | cursor keys move selection |
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280 | page-up move one page up |
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281 | page-down move one page down |
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282 | home move to first file |
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283 | end move to last file |
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284 | |
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285 | ctrl-a select all files |
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286 | ctrl-d delete selected files WITHOUT ASKING AGAIN |
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287 | ctrl-g force generation of thumbnais for the selected files |
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288 | ctrl-s rescan current direcory or files updates/deletes etc. |
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289 | ctrl-u update selected (or all) icons if neccessary |
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290 | ctrl-l don't use, will become a plug-in eventually |
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291 | |
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292 | 0-9, |
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293 | a-z find the first filename beginning with this letter |
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294 | |
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295 | Right-clicking into the schnauzer window displays a pop-up menu with |
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296 | additional actions. |
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297 | |
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298 | =head1 FILES |
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299 | |
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300 | When starting, CV runs the F<.cvrc> file in your F<$HOME> directory as if |
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301 | it were a perl script. in that, you will mostly load plug-ins. |
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302 | |
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303 | Example: |
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304 | |
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305 | system "fping -q -t 10 ether" |
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306 | or require "/fs/cv/cvplugin.pl"; |
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307 | |
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308 | This will load a plug-in, but only if the machine I<ether> is reachable |
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309 | (supposedly the plug-in is networked in some way :). |
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310 | |
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311 | =head1 ENVIRONMENT |
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312 | |
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313 | =over 4 |
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314 | |
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315 | =item CV_EDITOR |
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316 | |
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317 | The program that gets executed when the user presses C<CTRL-e> in the |
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318 | Schnauzer or image window. The default is C<gimp>. |
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319 | |
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320 | =item CV_PRINT_DESTINATION |
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321 | |
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322 | The default (perl-style) destination to use in the print dialog. |
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323 | |
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324 | =item CV_TRASHCAN |
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325 | |
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326 | When set, must point to a directory where all files that are deleted are |
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327 | moved to. If unset, files that are deleted are really being deleted. |
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328 | |
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329 | =back |
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330 | |
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331 | =head1 SECURITY CONSIDERATIONS |
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332 | |
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333 | CV uses Pixbuf to load images. Pixbuf is not considered safe for this |
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334 | purpose, though (from the gtk-2.2 release notes): |
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335 | |
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336 | "While efforts have been made to make gdk-pixbuf robust against invalid |
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337 | images, using gdk-pixbuf to load untrusted data is not recommended, due to |
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338 | the likelyhood that there are additional problems where an invalid image |
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339 | could cause gdk-pixbuf to crash or worse." |
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340 | |
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341 | =head1 BUGS/TODO |
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342 | |
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343 | Lots of functionality is missing. |
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344 | |
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345 | Pixbuf doesn't always honor G_BROKEN_FILENAMES, so accessing files with |
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346 | names incompatible might utf-8 fail. |
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347 | |
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348 | rotate on disk |
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349 | lots of ui issues |
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350 | save(?) |
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351 | preferences |
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352 | shift-cursor in schnauzer |
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353 | |
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354 | =head1 AUTHOR |
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355 | |
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356 | Marc Lehmann <cv@plan9.de>. |
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357 | |
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358 | =cut |
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359 | |
