X-Git-Url: http://git.vanrenterghem.biz/git.ikiwiki.info.git/blobdiff_plain/b2327cfae4ac7da1df7bbf848f575b553f74eafb..bd8198fb77ed5cf77ddeb860ca1ac983bfaacbbd:/IkiWiki/Plugin/img.pm diff --git a/IkiWiki/Plugin/img.pm b/IkiWiki/Plugin/img.pm index 48211454e..17a58ca7a 100644 --- a/IkiWiki/Plugin/img.pm +++ b/IkiWiki/Plugin/img.pm @@ -39,7 +39,7 @@ sub preprocess (@) { } } - if (! exists $params{size}) { + if (! exists $params{size} || ! length $params{size}) { $params{size}='full'; } @@ -64,82 +64,90 @@ sub preprocess (@) { my $dir = $params{page}; my $base = IkiWiki::basename($file); + 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 $im = Image::Magick->new(); my $imglink; - my $r = $im->Read($srcfile); + my $imgdatalink; + my $r = $im->Read("$srcfile\[$pagenumber]"); error sprintf(gettext("failed to read %s: %s"), $file, $r) if $r; - + + 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} ne 'full') { + 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 ((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") * $im->Get("width"); - } + + if ($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"; + + 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 { - # 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; + $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(); + # don't actually write resized file in preview mode; + # rely on width and height settings + if (! $params{preview}) { + writefile($imglink, $config{destdir}, $blob[0], 1); } else { - ($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 = $file; - } + eval q{use MIME::Base64}; + error($@) if $@; + $imgdatalink = "data:image/".$im->Get("magick").";base64,".encode_base64($blob[0]); } - - $dwidth = $im->Get("width") unless defined $dwidth; - $dheight = $im->Get("height") unless defined $dheight; } - } - else { - $imglink = $file; - $dwidth = $im->Get("width"); + + # 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($dheight)) { @@ -147,23 +155,26 @@ sub preprocess (@) { } my ($fileurl, $imgurl); - if (! $params{preview}) { - $fileurl=urlto($file, $params{destpage}); - $imgurl=urlto($imglink, $params{destpage}); - } - else { - $fileurl="$config{url}/$file"; - $imgurl="$config{url}/$imglink"; + my $urltobase = $params{preview} ? undef : $params{destpage}; + $fileurl=urlto($file, $urltobase); + $imgurl=$imgdatalink ? $imgdatalink : urlto($imglink, $urltobase); + + if (! exists $params{class}) { + $params{class}="img"; } + my $attrs=''; + foreach my $attr (qw{alt title class id hspace vspace}) { + if (exists $params{$attr}) { + $attrs.=" $attr=\"$params{$attr}\""; + } + } + my $imgtag=''.$params{alt}.''; my $link;