X-Git-Url: http://wagnertech.de/git?a=blobdiff_plain;ds=sidebyside;f=SL%2FController%2FHelper%2FThumbnailCreator.pm;fp=SL%2FController%2FHelper%2FThumbnailCreator.pm;h=cc262d130d1c728521648214decebfc1393fa3af;hb=53593baa211863fbf66540cf1bcc36c8fb37257f;hp=0000000000000000000000000000000000000000;hpb=deb4d2dbb676d7d6f69dfe7815d6e0cb09bd4a44;p=kivitendo-erp.git

diff --git a/SL/Controller/Helper/ThumbnailCreator.pm b/SL/Controller/Helper/ThumbnailCreator.pm
new file mode 100644
index 000000000..cc262d130
--- /dev/null
+++ b/SL/Controller/Helper/ThumbnailCreator.pm
@@ -0,0 +1,124 @@
+package SL::Controller::Helper::ThumbnailCreator;
+
+use strict;
+
+use SL::Locale::String qw(t8);
+use Carp;
+use GD;
+use Image::Info;
+use File::MimeInfo::Magic;
+use List::MoreUtils qw(apply);
+use List::Util qw(max);
+use Rose::DB::Object::Util;
+
+require Exporter;
+our @ISA      = qw(Exporter);
+our @EXPORT   = qw(file_create_thumbnail file_update_thumbnail file_probe_type file_probe_image_type file_update_type_and_dimensions);
+
+our %supported_mime_types = (
+  'image/gif'  => { extension => 'gif', convert_to_png => 1, },
+  'image/png'  => { extension => 'png' },
+  'image/jpeg' => { extension => 'jpg' },
+  'image/tiff' => { extension => 'tif'},
+);
+
+sub file_create_thumbnail {
+  my ($thumb, %params) = @_;
+
+  croak "No picture set yet" if !$thumb->{content};
+
+  my $image            = GD::Image->new($thumb->{content});
+  my ($width, $height) = $image->getBounds;
+  my $max_dim          = $params{size} // 64;
+  my $curr_max         = max $width, $height, 1;
+  my $factor           = $curr_max <= $max_dim ? 1 : $curr_max / $max_dim;
+  my $new_width        = int($width  / $factor + 0.5);
+  my $new_height       = int($height / $factor + 0.5);
+  my $thumbnail        = GD::Image->new($new_width, $new_height);
+
+  $thumbnail->copyResized($image, 0, 0, 0, 0, $new_width, $new_height, $width, $height);
+
+  $thumb->{thumbnail_img_content} = $thumbnail->png;
+  $thumb->{thumbnail_img_content_type} = "image/png";
+  $thumb->{thumbnail_img_width} = $new_width;
+  $thumb->{thumbnail_img_height} = $new_height;
+  return $thumb;
+
+}
+
+sub file_update_thumbnail {
+  my ($self) = @_;
+
+  return 1 if !$self->file_content || !$self->file_content_type || !Rose::DB::Object::Util::get_column_value_modified($self, 'file_content');
+  $self->file_create_thumbnail;
+  return 1;
+}
+
+sub file_probe_image_type {
+  my ($self, $mime_type, $basefile) = @_;
+
+  if ( !$supported_mime_types{ $mime_type } ) {
+    $self->js->flash('error',t8('file \'#1\' has unsupported image type \'#2\' (supported types: #3)',
+                                $basefile, $mime_type, join(' ', sort keys %supported_mime_types)));
+    return 1;
+  }
+  return 0;
+}
+
+sub file_probe_type {
+  my ($content, %params) = @_;
+  return (t8("No file uploaded yet")) if !$content;
+  my $info = Image::Info::image_info(\$content);
+  if (!$info || $info->{error} || !$info->{file_media_type} || !$supported_mime_types{ $info->{file_media_type} }) {
+    $::lxdebug->warn("Image::Info error: " . $info->{error}) if $info && $info->{error};
+    return (t8('Unsupported image type (supported types: #1)', join(' ', sort keys %supported_mime_types)));
+  }
+
+  my $thumbnail;
+  $thumbnail->{file_content_type} = $info->{file_media_type};
+  $thumbnail->{file_image_width} = $info->{width};
+  $thumbnail->{file_image_height} = $info->{height};
+  $thumbnail->{content} = $content;
+
+  $thumbnail = &file_create_thumbnail($thumbnail, %params);
+
+  return $thumbnail;
+}
+
+sub file_update_type_and_dimensions {
+  my ($self) = @_;
+
+  return () if !$self->file_content;
+  return () if $self->file_content_type && $self->files_img_width && $self->files_img_height && !Rose::DB::Object::Util::get_column_value_modified($self, 'file_content');
+
+  my @errors = $self->file_probe_type;
+  return @errors if @errors;
+
+  my $info = $supported_mime_types{ $self->file_content_type };
+  if ($info->{convert_to_png}) {
+    $self->file_content(GD::Image->new($self->file_content)->png);
+    $self->file_content_type('image/png');
+    $self->filename(apply { s/\.[^\.]+$//;  $_ .= '.png'; } $self->filename);
+  }
+  return ();
+}
+
+1;
+
+__END__
+
+=pod
+
+=encoding utf8
+
+=head1 NAME
+
+SL::Controller::Helper::ThumbnailCreator - Helper for Fileuploads
+
+=head1 SYNOPSIS
+
+use SL::Controller::Helper::ThumbnailCreator;
+
+=head1 AUTHOR
+
+Werner Hahn E<lt>wh@futureworldsearch.netE<gt>