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($dheight)) {
}
my ($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";
- }
- else {
+ if (! exists $params{class}) {
$params{class}="img";
}