tag. Empty values will be omitted.
function image_hwstring($width, $height) {
$out = '';
if ($width)
$out .= 'width="'.intval($width).'" ';
if ($height)
$out .= 'height="'.intval($height).'" ';
return $out;
}
// Scale an image to fit a particular size (such as 'thumb' or 'medium'), and return an image URL, height and width.
// The URL might be the original image, or it might be a resized version.
// returns an array($url, $width, $height)
function image_downsize($id, $size = 'medium') {
$img_url = wp_get_attachment_url($id);
$meta = wp_get_attachment_metadata($id);
$width = $height = 0;
// plugins can use this to provide resize services
if ( $out = apply_filters('image_downsize', false, $id, $size) )
return $out;
if ( $size == 'thumb' ) {
// thumbnail: use the thumb as the displayed image, and constrain based on its dimensions
$thumb_path = wp_get_attachment_thumb_file($id);
// the actual thumbnail size isn't stored so we'll have to calculate it
if ( $thumb_path && ($info = getimagesize($thumb_path)) ) {
list( $width, $height ) = image_constrain_size_for_editor( $info[0], $info[1], $size );
$img_url = wp_get_attachment_thumb_url($id);
}
// this could be improved to provide a default thumbnail if one doesn't exist
}
elseif ( isset($meta['width'], $meta['height']) ) {
// any other type: use the real image and constrain it
list( $width, $height ) = image_constrain_size_for_editor( $meta['width'], $meta['height'], $size );
}
return array( $img_url, $width, $height );
}
// return an ![]()
tag for the given image attachment, scaling it down if requested
function get_image_tag($id, $alt, $title, $align, $rel = false, $size='medium') {
list( $img_src, $width, $height ) = image_downsize($id, $size);
$hwstring = image_hwstring($width, $height);
$html = '.' "'.attribute_escape($title).'")
';
$html = apply_filters( 'image_send_to_editor', $html, $id, $alt, $title, $align, $url );
return $html;
}
?>