X-Git-Url: https://sipb.mit.edu/gitweb.cgi/ikiwiki.git/blobdiff_plain/335a6a59e66ee7c2cf0c68c659259b885f7e8a07..06c712a7f0c75da344da43cd6030924b856a9439:/IkiWiki/Plugin/img.pm

diff --git a/IkiWiki/Plugin/img.pm b/IkiWiki/Plugin/img.pm
index 748d28ace..9ae85c4e6 100644
--- a/IkiWiki/Plugin/img.pm
+++ b/IkiWiki/Plugin/img.pm
@@ -5,15 +5,24 @@ package IkiWiki::Plugin::img;
 
 use warnings;
 use strict;
-use IkiWiki 2.00;
+use IkiWiki 3.00;
 
 my %imgdefaults;
 
-sub import { #{{{
+sub import {
+	hook(type => "getsetup", id => "img", call => \&getsetup);
 	hook(type => "preprocess", id => "img", call => \&preprocess, scan => 1);
-} #}}}
+}
 
-sub preprocess (@) { #{{{
+sub getsetup () {
+	return
+		plugin => {
+			safe => 1,
+			rebuild => undef,
+		},
+}
+
+sub preprocess (@) {
 	my ($image) = $_[0] =~ /$config{wiki_file_regexp}/; # untaint
 	my %params=@_;
 
@@ -34,7 +43,8 @@ sub preprocess (@) { #{{{
 		return '';
 	}
 
-	push @{$links{$params{page}}}, $image;
+	add_link($params{page}, $image);
+
 	# optimisation: detect scan mode, and avoid generating the image
 	if (! defined wantarray) {
 		return;
@@ -55,10 +65,15 @@ sub preprocess (@) { #{{{
 	my $imglink;
 	my $r;
 
+	my ($dwidth, $dheight);
+
 	if ($params{size} ne 'full') {
-		my ($w, $h) = ($params{size} =~ /^(\d+)x(\d+)$/);
-		error sprintf(gettext('bad size "%s"'), $params{size})
-			unless (defined $w && defined $h);
+		add_depends($params{page}, $image);
+
+		my ($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));
 
 		my $outfile = "$config{destdir}/$dir/${w}x${h}-$base";
 		$imglink = "$dir/${w}x${h}-$base";
@@ -73,7 +88,15 @@ sub preprocess (@) { #{{{
 			$r = $im->Read($srcfile);
 			error sprintf(gettext("failed to read %s: %s"), $file, $r) if $r;
 
-			$r = $im->Resize(geometry => "${w}x${h}");
+			# don't resize any larger
+			my ($rw, $rh) = ($w, $h);
+			if ((length $rw && $rw > $im->Get("width")) ||
+			    (length $rh && $rh > $im->Get("height"))) {
+				$rw=$im->Get("width");
+				$rh=$im->Get("height");
+			}
+
+			$r = $im->Resize(geometry => "${rw}x${rh}");
 			error sprintf(gettext("failed to resize: %s"), $r) if $r;
 
 			# don't actually write file in preview mode
@@ -85,15 +108,36 @@ sub preprocess (@) { #{{{
 				$imglink = $file;
 			}
 		}
+
+		# since we don't really resize larger, set the display
+		# size, so the browser can scale the image up if necessary
+		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);
 		error sprintf(gettext("failed to read %s: %s"), $file, $r) if $r;
 		$imglink = $file;
+		$dwidth = $im->Get("width");
+		$dheight = $im->Get("height");
 	}
 
-	add_depends($imglink, $params{page});
-
 	my ($fileurl, $imgurl);
 	if (! $params{preview}) {
 		$fileurl=urlto($file, $params{destpage});
@@ -109,10 +153,11 @@ sub preprocess (@) { #{{{
 	}
 
 	my $imgtag='<img src="'.$imgurl.
-		'" alt="'.(exists $params{alt} ? $params{alt} : '').
-		'" width="'.$im->Get("width").
-		'" height="'.$im->Get("height").'"'.
+		'" width="'.$dwidth.
+		'" height="'.$dheight.'"'.
+		(exists $params{alt} ? ' alt="'.$params{alt}.'"' : '').
 		(exists $params{title} ? ' title="'.$params{title}.'"' : '').
+		(exists $params{align} ? ' align="'.$params{align}.'"' : '').
 		(exists $params{class} ? ' class="'.$params{class}.'"' : '').
 		(exists $params{id} ? ' id="'.$params{id}.'"' : '').
 		' />';
@@ -123,11 +168,15 @@ sub preprocess (@) { #{{{
 	elsif ($params{link} =~ /^\w+:\/\//) {
 		$imgtag='<a href="'.$params{link}.'">'.$imgtag.'</a>';
 	}
-	elsif (length bestlink($params{page}, $params{link})) {
-		add_depends($params{page}, $params{link});
-		$imgtag=htmllink($params{page}, $params{destpage},
-			$params{link}, linktext => $imgtag,
-			noimageinline => 1);
+	else {
+		my $b = bestlink($params{page}, $params{link});
+	
+		if (length $b) {
+			add_depends($params{page}, $b);
+			$imgtag=htmllink($params{page}, $params{destpage},
+				$params{link}, linktext => $imgtag,
+				noimageinline => 1);
+		}
 	}
 
 	if (exists $params{caption}) {
@@ -139,6 +188,6 @@ sub preprocess (@) { #{{{
 	else {
 		return $imgtag;
 	}
-} #}}}
+}
 
 1