X-Git-Url: http://git.vanrenterghem.biz/git.ikiwiki.info.git/blobdiff_plain/54c90b2d41488657c583e657b16e363c9eb999fa..73f4a8835876c8cb07808367cd72d9ae972893e8:/IkiWiki/Plugin/img.pm?ds=inline diff --git a/IkiWiki/Plugin/img.pm b/IkiWiki/Plugin/img.pm index 20893f56c..c1048d3c9 100644 --- a/IkiWiki/Plugin/img.pm +++ b/IkiWiki/Plugin/img.pm @@ -5,81 +5,195 @@ package IkiWiki::Plugin::img; use warnings; use strict; -use IkiWiki; -use Image::Magick; - -my $convert = 'convert'; +use IkiWiki 3.00; my %imgdefaults; -sub import { #{{{ - hook(type => "preprocess", id => "img", call => \&preprocess); -} #}}} +sub import { + hook(type => "getsetup", id => "img", call => \&getsetup); + hook(type => "preprocess", id => "img", call => \&preprocess, scan => 1); +} + +sub getsetup () { + return + plugin => { + safe => 1, + rebuild => undef, + }, +} -sub preprocess (@) { #{{{ +sub preprocess (@) { my ($image) = $_[0] =~ /$config{wiki_file_regexp}/; # untaint my %params=@_; - if (! exists $imgdefaults{$params{page}}) { - $imgdefaults{$params{page}} = {}; + 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}) { + $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); - 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 { - $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; + + $dwidth = $im->Get("width"); + $dheight = $im->Get("height"); + } + else { + ($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 file in preview mode + if (! $params{preview}) { + my @blob = $im->ImageToBlob(); + writefile($imglink, $config{destdir}, $blob[0], 1); + } + else { + $imglink = $file; + } + } } } else { - $r = $im->Read(srcfile($file)); - return "[[img failed to read $file: $r]]" if $r; $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}); + my $imgtag=''.$params{alt}.''; + + my $link; + if (! defined $params{link}) { + $link=$fileurl; + } + elsif ($params{link} =~ /^\w+:\/\//) { + $link=$params{link}; + } - return ''.$alt.''; -} #}}} + if (defined $link) { + $imgtag=''.$imgtag.''; + } + 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 $params{caption}) { + return ''. + ''. + ''. + '
'.$params{caption}.'
'.$imgtag.'
'; + } + else { + return $imgtag; + } +} -1; +1