use warnings;
use strict;
-use IkiWiki;
-use Image::Magick;
+use IkiWiki 3.00;
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=@_;
- 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') {
- $imgdefaults{$params{page}} = {
- size => $size,
- alt => $alt,
- };
+ $imgdefaults{$params{page}} = \%params;
return '';
}
+ add_link($params{page}, $image);
add_depends($params{page}, $image);
- my $file = bestlink($params{page}, $image) || return "[[img $image not found]]";
- my $dir = IkiWiki::dirname($file);
+ # optimisation: detect scan mode, and avoid generating the image
+ if (! defined wantarray) {
+ return;
+ }
+
+ my $file = bestlink($params{page}, $image);
+ my $srcfile = srcfile($file, 1);
+ if (! length $file || ! defined $srcfile) {
+ return htmllink($params{page}, $params{destpage}, $image);
+ }
+
+ my $dir = $params{page};
my $base = IkiWiki::basename($file);
- my $im = Image::Magick->new;
+ my $issvg = $base=~s/\.svg$/.png/i;
+ my $ispdf = $base=~s/\.pdf$/.png/i;
+ my $pagenumber = exists($params{pagenumber}) ? int($params{pagenumber}) : 0;
+ if ($pagenumber != 0) {
+ $base = "p$pagenumber-$base";
+ }
+
+ eval q{use Image::Magick};
+ error gettext("Image::Magick is not installed") if $@;
+ my $im = Image::Magick->new();
my $imglink;
- my $r;
+ my $imgdatalink;
+ my $r = $im->Read("$srcfile\[$pagenumber]");
+ error sprintf(gettext("failed to read %s: %s"), $file, $r) if $r;
- if ($size ne 'full') {
- my ($w, $h) = ($size =~ /^(\d+)x(\d+)$/);
- return "[[img bad size \"$size\"]]" unless (defined $w && defined $h);
+ if (! defined $im->Get("width") || ! defined $im->Get("height")) {
+ error sprintf(gettext("failed to get dimensions of %s"), $file);
+ }
+
+ my ($dwidth, $dheight);
+
+ if ($params{size} eq 'full') {
+ $dwidth = $im->Get("width");
+ $dheight = $im->Get("height");
+ } else {
+ my ($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 $h));
+
+ if ($im->Get("width") == 0 || $im->Get("height") == 0) {
+ ($dwidth, $dheight)=(0, 0);
+ } elsif (! length $w || (length $h && $im->Get("height")*$w > $h * $im->Get("width"))) {
+ # using height because only height is given or ...
+ # because original image is more portrait than $w/$h
+ # ... slimness of $im > $h/w
+ # ... $im->Get("height")/$im->Get("width") > $h/$w
+ # ... $im->Get("height")*$w > $h * $im->Get("width")
+
+ $dheight=$h;
+ $dwidth=$h / $im->Get("height") * $im->Get("width");
+ } else { # (! length $h) or $w is what determines the resized size
+ $dwidth=$w;
+ $dheight=$w / $im->Get("width") * $im->Get("height");
+ }
+ }
+
+ if ($dwidth < $im->Get("width") || $ispdf) {
+ # resize down, or resize to pixels at all
+
+ my $outfile = "$config{destdir}/$dir/$params{size}-$base";
+ $imglink = "$dir/$params{size}-$base";
- my $outfile = "$config{destdir}/$dir/${w}x${h}-$base";
- $imglink = "$dir/${w}x${h}-$base";
will_render($params{page}, $imglink);
- if (-e $outfile && (-M srcfile($file) >= -M $outfile)) {
+ if (-e $outfile && (-M $srcfile >= -M $outfile)) {
+ $im = Image::Magick->new;
$r = $im->Read($outfile);
- return "[[img failed to read $outfile: $r]]" if $r;
+ error sprintf(gettext("failed to read %s: %s"), $outfile, $r) if $r;
}
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;
+ $r = $im->Resize(geometry => "${dwidth}x${dheight}");
+ error sprintf(gettext("failed to resize: %s"), $r) if $r;
+ $im->set(($issvg || $ispdf) ? (magick => 'png') : ());
my @blob = $im->ImageToBlob();
- writefile($imglink, $config{destdir}, $blob[0], 1);
+ # don't actually write resized file in preview mode;
+ # rely on width and height settings
+ if (! $params{preview}) {
+ writefile($imglink, $config{destdir}, $blob[0], 1);
+ }
+ else {
+ eval q{use MIME::Base64};
+ error($@) if $@;
+ $imgdatalink = "data:image/".$im->Get("magick").";base64,".encode_base64($blob[0]);
+ }
}
- }
- else {
- $r = $im->Read(srcfile($file));
- return "[[img failed to read $file: $r]]" if $r;
+
+ # always get the true size of the resized image (it could be
+ # that imagemagick did its calculations differently)
+ $dwidth = $im->Get("width");
+ $dheight = $im->Get("height");
+ } else {
$imglink = $file;
}
+
+ if (! defined($dwidth) || ! defined($dheight)) {
+ error sprintf(gettext("failed to determine size of image %s"), $file)
+ }
+
+ my ($fileurl, $imgurl);
+ my $urltobase = $params{preview} ? undef : $params{destpage};
+ $fileurl=urlto($file, $urltobase);
+ $imgurl=$imgdatalink ? $imgdatalink : urlto($imglink, $urltobase);
- add_depends($imglink, $params{page});
+ if (! exists $params{class}) {
+ $params{class}="img";
+ }
- return '<a href="'.
- IkiWiki::abs2rel($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