In case it helps, here is the code:
Few explanations on what is trying to be achieved:
• The user has a library of images that he uses to build comics. There are 2 repeater fields within one “comic” custom post type: “comic slides” (images within a comic) and “comic_bildkomposition” (layers of images within a slide that will be put into a final image)
• current_timestamp is being used as an ID for each comic that is being built.
• there are 2 repeater fields: “comic_slides” and nested in it there are the fields “comic_text” (wysiwyg field) and “comic_bildkomposition” (repeater field for the image layers within a slide)
CODE:
function lextoons_comic_builder( $ID ) {
$comic_slides = get_field(‘comic_slides’);
// $comic_excerpt = substr(get_field(‘comic_excerpt’), 0, 120);
[Author comment: this was a test in order to see if the function receives acf custom field data at all, which it does, “comic_excerpt” is a custom description field that is being put into the variable and printed just fine
$comic_timestamp = get_field (‘timestamp’);
$current_timestamp = time();
$timestamp_field_key = “field_53da164db054e”;
$comic_title = get_the_title();
//check if comic timestamp has been set yet for this post, set an ID based on timestamp if not
if ($comic_timestamp < 1 ) {
update_field( $timestamp_field_key, $current_timestamp, $ID );
$comic_timestamp = $current_timestamp;
$pathname = “”.$_SERVER[‘DOCUMENT_ROOT’].”wp-content/uploads/comics/”.$comic_timestamp.””;
//print $pathname;
mkdir($pathname);
}
//If an ID has been set before, delete all files in the folder of this comic for recreation afterwards
if ($comic_timestamp > 1 ) {
//echo “<br/>Files: <br/>”;
foreach (glob(“”.$_SERVER[‘DOCUMENT_ROOT’].”wp-content/uploads/comics/”.$comic_timestamp.”/*.*”) as $filename) {
// echo “$filename size ” . filesize($filename) . “<br/>”;
unlink($filename);
}
}
//Now, Loop through all Comic Slides and Generate a single Image out of each slides’ Layer
$slide_nr = 0;
foreach ($comic_slides as $comic_slide) {
$slide_nr++;
$slide_text = $comic_slide[‘comic_text’];
$slide_text = substr($slide_text, 3, -5);
$comic_layers =$comic_slide[‘comic_bildkomposition’];
$width = get_field (‘image_input_width’, ‘options’);
$height = get_field (‘image_input_height’, ‘options’);
$newwidth = get_field (‘image_output_width’, ‘options’);
$newheight = get_field (‘image_output_height’, ‘options’);
$image = imagecreatetruecolor($width, $height);
foreach ($comic_layers as $layer) {
unset ($layer_data);
// to make background transparent
imagealphablending($image, false);
$transparency = imagecolorallocatealpha($image, 0, 0, 0, 127);
imagefill($image, 0, 0, $transparency);
imagesavealpha($image, true);
imagealphablending($image, true);
$layer_url = $layer[‘comic_layer’][‘url’];
print $layer_url;
$layer_data = imagecreatefrompng($layer_url);
imagecopy($image, $layer_data, 0, 0, 0, 0, $width, $height);
imagealphablending($image, false);
imagesavealpha($image, true);
}
$image2 = imagecreatetruecolor($width, $height);
$white = imagecolorallocate($image, 255, 255, 255);
imagefill($image2, 0, 0, $white);
imagecopy($image2, $image, 0, 0, 0, 0, $width, $height);
//create a thumb file img for resizing
$thumb = imagecreatetruecolor($newwidth, $newheight);
imagecopyresized($thumb, $image2, 0, 0, 0, 0, $newwidth, $newheight, $width, $height);
imagepng($thumb, “”.$_SERVER[‘DOCUMENT_ROOT’].”wp-content/uploads/comics/”.$comic_timestamp.”/”.$comic_title.”_”.$slide_nr.”.png”);
unset ($image);
unset ($image2);
unset ($thumb);
}
}
add_action( ‘acf/save_post’, ‘lextoons_comic_builder’, 20 );
[/CODE]
post.php_.zi....zip
Screen-Shot-....png
