this allows picking a page from a pdf. also, this enhances performance
greatly when rendering pdfs, as only the first page is rasterized.
(otherwise, imagemagick would treat the pdf as a list of images, work
with all of them, until finally only the first page gets saved). the
default parameter of 0 will select the single image contained in typical
image files anyway, so no specialcasing between single- and multifile
containers is needed.
my $base = IkiWiki::basename($file);
my $issvg = $base=~s/\.svg$/.png/i;
my $ispdf = $base=~s/\.pdf$/.png/i;
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 $imglink;
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);
+ my $r = $im->Read("$srcfile\[$pagenumber]");
error sprintf(gettext("failed to read %s: %s"), $file, $r) if $r;
my ($dwidth, $dheight);
error sprintf(gettext("failed to read %s: %s"), $file, $r) if $r;
my ($dwidth, $dheight);
to another page instead, or "link=no" to disable the link, or
"link=http://url" to link to a given url.
to another page instead, or "link=no" to disable the link, or
"link=http://url" to link to a given url.
+The `pagenumber` parameter selects which of multiple images should be rendered;
+this is relevant mainly for GIF and PDF source images.
+
You can also set default values that will be applied to all later images on
the page, unless overridden. Useful when including many images on a page.
You can also set default values that will be applied to all later images on
the page, unless overridden. Useful when including many images on a page.