package Shiar_Sheet::ImagePrep;
-use 5.014;
+use 5.020;
use warnings;
+use experimental 'signatures';
-our $VERSION = '1.00';
+our $VERSION = '1.02';
-sub new {
- my ($class, $target) = @_;
+sub new ($class, $target) {
bless \$target, $class;
}
-sub download {
+sub download ($target, $download) {
# copy changed remote url to local file
- my $target = shift;
unlink $$target if -e $$target;
- my $download = shift or return 1;
+ defined $download or return 1;
require LWP::UserAgent;
my $ua = LWP::UserAgent->new;
$ua->agent('/');
or die "Download from <q>$download</q> failed: ".$status->status_line."\n";
}
-sub dimensions {
- my ($imgpath) = @_;
+sub dimensions ($imgpath) {
require IPC::Run;
IPC::Run::run(
[identify => -format => '%w %h', $$imgpath],
return split /\s/, $xy, 3;
}
-sub convert {
- my ($imgpath, $thumbpath, $cmds) = @_;
+sub generate ($imgpath, $thumbpath, $opt) {
if (not -e $$imgpath) {
return !-e $thumbpath || unlink $thumbpath;
}
+ my @cmds = @{$opt->{convert} // []};
+ unshift @cmds, -area => $_ for $opt->{crop32} || ();
+ $imgpath->convert($thumbpath, \@cmds, '300x200') and # low-res cover
+ $imgpath->convert($thumbpath =~ s/\.jpg$/.webp/r,
+ [@cmds, -quality => 40], '600x400' # higher dpi tradeoff
+ );
+}
+sub convert ($imgpath, $thumbpath, $cmds, $xyres) {
#my ($w, $h) = $imgpath->dimensions;
- my $xyres = 0 ? '600x400' : '300x200'; # cover
- my $aspect = 3/2;
- my @cmds = @{ $cmds // [] };
+ #my $aspect = 3/2; # $xyres
+ my @cmds = @{$cmds};
if (my ($cmdarg) = grep { $cmds[$_] eq '-area' } 0 .. $#cmds) {
# replace option by permillage crop
my @dim = map { $_ / 1000 } split /\D/, $cmds[$cmdarg + 1];
'convert',
$$imgpath,
-delete => '1--1', -background => 'white',
+ '-strip', -quality => '60%', -interlace => 'plane',
-gravity => defined $cmds ? 'northwest' : 'center',
@cmds,
-resize => "$xyres^", -extent => $xyres,
- '-strip', -quality => '60%', -interlace => 'plane',
$thumbpath
);
+ $imgpath->runcommand(@cmds);
+}
+
+sub runcommand ($, @cmds) {
require IPC::Run;
my $output;
IPC::Run::run(\@cmds, '<' => \undef, '>&' => \$output) or die [