(no commit message)

[git.ikiwiki.info.git] / IkiWiki / Plugin / img.pm

diff --git a/IkiWiki/Plugin/img.pm b/IkiWiki/Plugin/img.pm
index bde5a3e1ae9ff997385b98751efae28da0768e31..2375ead8968b6a9baf64ff8ac825dbde6a75b82d 100644 (file)
--- a/IkiWiki/Plugin/img.pm
+++ b/IkiWiki/Plugin/img.pm
@@ -5,81 +5,212 @@ package IkiWiki::Plugin::img;
 
 use warnings;
 use strict;
 
 use warnings;
 use strict;

-use IkiWiki;
-use Image::Magick;
-
-my $convert = 'convert';
+use IkiWiki 3.00;

 
 my %imgdefaults;
 
 
 my %imgdefaults;
 

-sub import { #{{{
-       hook(type => "preprocess", id => "img", call => \&preprocess);
-} #}}}
-
-sub preprocess (@) { #{{{
+sub import {
+       hook(type => "getsetup", id => "img", call => \&getsetup);
+       hook(type => "preprocess", id => "img", call => \&preprocess, scan => 1);
+}
+
+sub getsetup () {
+       return
+               plugin => {
+                       safe => 1,
+                       rebuild => undef,
+                       section => "widget",
+               },
+}
+
+sub preprocess (@) {

        my ($image) = $_[0] =~ /$config{wiki_file_regexp}/; # untaint
        my %params=@_;
 
        my ($image) = $_[0] =~ /$config{wiki_file_regexp}/; # untaint
        my %params=@_;
 

-       if (! exists $imgdefaults{$params{page}}) {
-               $imgdefaults{$params{page}} = {};
+       if (! defined $image) {
+               error("bad image filename");
+       }
+
+       if (exists $imgdefaults{$params{page}}) {
+               foreach my $key (keys %{$imgdefaults{$params{page}}}) {
+                       if (! exists $params{$key}) {
+                               $params{$key}=$imgdefaults{$params{page}}->{$key};
+                       }
+               }
+       }
+
+       if (! exists $params{size} || ! length $params{size}) {
+               $params{size}='full';

        }
        }

-       my $size = $params{size} || $imgdefaults{$params{page}}->{size} || 'full';
-       my $alt = $params{alt} || $imgdefaults{$params{page}}->{alt} || '';

 
        if ($image eq 'defaults') {
 
        if ($image eq 'defaults') {

-               $imgdefaults{$params{page}} = {
-                       size => $size,
-                       alt => $alt,
-               };
+               $imgdefaults{$params{page}} = \%params;

                return '';
        }
 
                return '';
        }
 

-       my $file = bestlink($params{page}, $image) || return "[[img $image not found]]";
-       add_depends($params{page}, $file);
+       add_link($params{page}, $image);
+       add_depends($params{page}, $image);

 
 

-       my $dir = IkiWiki::dirname($file);
-       my $base = IkiWiki::basename($file);
-       my $im = Image::Magick->new;
-       my $imglink;
-       my $r;
+       # optimisation: detect scan mode, and avoid generating the image
+       if (! defined wantarray) {
+               return;
+       }

 
 

-       if ($size ne 'full') {
-               my ($w, $h) = ($size =~ /^(\d+)x(\d+)$/);
-               return "[[img bad size \"$size\"]]" unless (defined $w && defined $h);
+       my $file = bestlink($params{page}, $image);
+       my $srcfile = srcfile($file, 1);
+       if (! length $file || ! defined $srcfile) {
+               return htmllink($params{page}, $params{destpage}, $image);
+       }

 
 

-               my $outfile = "$config{destdir}/$dir/${w}x${h}-$base";
-               $imglink = "$dir/${w}x${h}-$base";
-               will_render($params{page}, $imglink);
+       my $dir = $params{page};
+       my $base = IkiWiki::basename($file);

 
 

-               if (-e $outfile && (-M srcfile($file) >= -M $outfile)) {
-                       $r = $im->Read($outfile);
-                       return "[[img failed to read $outfile: $r]]" if $r;
+       eval q{use Image::Magick};
+       error gettext("Image::Magick is not installed") if $@;
+       my $im = Image::Magick->new;
+       my $imglink;
+       my $r = $im->Read($srcfile);
+       error sprintf(gettext("failed to read %s: %s"), $file, $r) if $r;
+       
+       my ($dwidth, $dheight);
+
+       if ($params{size} ne 'full') {
+               my ($w, $h) = ($params{size} =~ /^(\d*)x(\d*)$/);
+               error sprintf(gettext('wrong size format "%s" (should be WxH)'), $params{size})
+                       unless (defined $w && defined $h &&
+                               (length $w || length $h));
+               
+               if ((length $w && $w > $im->Get("width")) ||
+                   (length $h && $h > $im->Get("height"))) {
+                       # resizing larger
+                       $imglink = $file;
+
+                       # don't generate larger image, just set display size
+                       if (length $w && length $h) {
+                               ($dwidth, $dheight)=($w, $h);
+                       }
+                       # avoid division by zero on 0x0 image
+                       elsif ($im->Get("width") == 0 || $im->Get("height") == 0) {
+                               ($dwidth, $dheight)=(0, 0);
+                       }
+                       # calculate unspecified size from the other one, preserving
+                       # aspect ratio
+                       elsif (length $w) {
+                               $dwidth=$w;
+                               $dheight=$w / $im->Get("width") * $im->Get("height");
+                       }
+                       elsif (length $h) {
+                               $dheight=$h;
+                               $dwidth=$h / $im->Get("height") * $im->Get("width");
+                       }

                }
                else {
                }
                else {

-                       $r = $im->Read(srcfile($file));
-                       return "[[img failed to read $file: $r]]" if $r;
-
-                       $r = $im->Resize(geometry => "${w}x${h}");
-                       return "[[img failed to resize: $r]]" if $r;
-
-                       my @blob = $im->ImageToBlob();
-                       writefile($imglink, $config{destdir}, $blob[0], 1);
+                       # resizing smaller
+                       my $outfile = "$config{destdir}/$dir/${w}x${h}-$base";
+                       $imglink = "$dir/${w}x${h}-$base";
+               
+                       will_render($params{page}, $imglink);
+
+                       if (-e $outfile && (-M $srcfile >= -M $outfile)) {
+                               $im = Image::Magick->new;
+                               $r = $im->Read($outfile);
+                               error sprintf(gettext("failed to read %s: %s"), $outfile, $r) if $r;
+                       }
+                       else {
+                               ($dwidth, $dheight)=($w, $h);
+                               $r = $im->Resize(geometry => "${w}x${h}");
+                               error sprintf(gettext("failed to resize: %s"), $r) if $r;
+
+                               # don't actually write resized file in preview mode;
+                               # rely on width and height settings
+                               if (! $params{preview}) {
+                                       my @blob = $im->ImageToBlob();
+                                       writefile($imglink, $config{destdir}, $blob[0], 1);
+                               }
+                               else {
+                                       $imglink = $file;
+                               }
+                       }
+                       
+                       $dwidth = $im->Get("width") unless defined $dwidth;
+                       $dheight = $im->Get("height") unless defined $dheight;

                }
        }
        else {
                }
        }
        else {

-               $r = $im->Read(srcfile($file));
-               return "[[img failed to read $file: $r]]" if $r;

                $imglink = $file;
                $imglink = $file;

+               $dwidth = $im->Get("width");
+               $dheight = $im->Get("height");
+       }
+       
+       if (! defined($dwidth) || ! defined($dheight)) {
+               error sprintf(gettext("failed to determine size of image %s"), $file)
+       }
+
+       my ($fileurl, $imgurl);
+       if (! $params{preview}) {
+               $fileurl=urlto($file, $params{destpage});
+               $imgurl=urlto($imglink, $params{destpage});
+       }
+       else {
+               $fileurl="$config{url}/$file";
+               $imgurl="$config{url}/$imglink";

        }
 
        }
 

-       add_depends($imglink, $params{page});
+       if (exists $params{class}) {
+               $params{class}.=" img";
+       }
+       else {
+               $params{class}="img";
+       }

 
 

-       return '<a href="'.
-               IkiWiki::abs2rel($file, IkiWiki::dirname($params{destpage})).
-               '"><img src="'.
-               IkiWiki::abs2rel($imglink, IkiWiki::dirname($params{destpage})).
-               '" alt="'.$alt.'" width="'.$im->Get("width").
-               '" height="'.$im->Get("height").'" /></a>';
-} #}}}
+       my $attrs='';
+       foreach my $attr (qw{alt title class id hspace vspace}) {
+               if (exists $params{$attr}) {
+                       $attrs.=" $attr=\"$params{$attr}\"";
+               }
+       }
+       
+       my $imgtag='<img src="'.$imgurl.
+               '" width="'.$dwidth.
+               '" height="'.$dheight.'"'.
+               $attrs.
+               (exists $params{align} && ! exists $params{caption} ? ' align="'.$params{align}.'"' : '').
+               ' />';
+
+       my $link;
+       if (! defined $params{link}) {
+               $link=$fileurl;
+       }
+       elsif ($params{link} =~ /^\w+:\/\//) {
+               $link=$params{link};
+       }
+
+       if (defined $link) {
+               $imgtag='<a href="'.$link.'">'.$imgtag.'</a>';
+       }
+       else {
+               my $b = bestlink($params{page}, $params{link});
+       
+               if (length $b) {
+                       add_depends($params{page}, $b, deptype("presence"));
+                       $imgtag=htmllink($params{page}, $params{destpage},
+                               $params{link}, linktext => $imgtag,
+                               noimageinline => 1,
+                       );
+               }
+       }
+
+       if (exists $params{caption}) {
+               return '<table class="img'.
+                       (exists $params{align} ? " align-$params{align}" : "").
+                       '">'.
+                       '<caption>'.$params{caption}.'</caption>'.
+                       '<tr><td>'.$imgtag.'</td></tr>'.
+                       '</table>';
+       }
+       else {
+               return $imgtag;
+       }
+}

 
 

-1;
+1