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<?php
function get_udims( $width, $height) {
if ( $height <= 96 && $width <= 128 )
return array( $width, $height);
elseif ( $width / $height > 4 / 3 )
return array( 128, (int) ($height / $width * 128 ));
else
return array( (int) ($width / $height * 96 ), 96 );
}
function wp_create_thumbnail( $file, $max_side, $effect = '' ) {
// 1 = GIF, 2 = JPEG, 3 = PNG
if ( file_exists( $file ) ) {
$type = getimagesize( $file );
// if the associated function doesn't exist - then it's not
// handle. duh. i hope.
if (!function_exists( 'imagegif' ) && $type[2] == 1 ) {
$error = __( 'Filetype not supported. Thumbnail not created.' );
}
elseif (!function_exists( 'imagejpeg' ) && $type[2] == 2 ) {
$error = __( 'Filetype not supported. Thumbnail not created.' );
}
elseif (!function_exists( 'imagepng' ) && $type[2] == 3 ) {
$error = __( 'Filetype not supported. Thumbnail not created.' );
} else {
// create the initial copy from the original file
if ( $type[2] == 1 ) {
$image = imagecreatefromgif( $file );
}
elseif ( $type[2] == 2 ) {
$image = imagecreatefromjpeg( $file );
}
elseif ( $type[2] == 3 ) {
$image = imagecreatefrompng( $file );
}
if ( function_exists( 'imageantialias' ))
imageantialias( $image, TRUE );
$image_attr = getimagesize( $file );
// figure out the longest side
if ( $image_attr[0] > $image_attr[1] ) {
$image_width = $image_attr[0];
$image_height = $image_attr[1];
$image_new_width = $max_side;
$image_ratio = $image_width / $image_new_width;
$image_new_height = $image_height / $image_ratio;
//width is > height
} else {
$image_width = $image_attr[0];
$image_height = $image_attr[1];
$image_new_height = $max_side;
$image_ratio = $image_height / $image_new_height;
$image_new_width = $image_width / $image_ratio;
//height > width
}
$thumbnail = imagecreatetruecolor( $image_new_width, $image_new_height);
@ imagecopyresampled( $thumbnail, $image, 0, 0, 0, 0, $image_new_width, $image_new_height, $image_attr[0], $image_attr[1] );
// If no filters change the filename, we'll do a default transformation.
if ( basename( $file ) == $thumb = apply_filters( 'thumbnail_filename', basename( $file ) ) )
$thumb = preg_replace( '!(\.[^.]+)?$!', '.thumbnail' . '$1', basename( $file ), 1 );
$thumbpath = str_replace( basename( $file ), $thumb, $file );
// move the thumbnail to its final destination
if ( $type[2] == 1 ) {
if (!imagegif( $thumbnail, $thumbpath ) ) {
$error = __( "Thumbnail path invalid" );
}
}
elseif ( $type[2] == 2 ) {
if (!imagejpeg( $thumbnail, $thumbpath ) ) {
$error = __( "Thumbnail path invalid" );
}
}
elseif ( $type[2] == 3 ) {
if (!imagepng( $thumbnail, $thumbpath ) ) {
$error = __( "Thumbnail path invalid" );
}
}
}
} else {
$error = __( 'File not found' );
}
if (!empty ( $error ) ) {
return $error;
} else {
return apply_filters( 'wp_create_thumbnail', $thumbpath );
}
}
function wp_crop_image( $src_file, $src_x, $src_y, $src_w, $src_h, $dst_w, $dst_h, $src_abs = false, $dst_file = false ) {
if ( ctype_digit( $src_file ) ) // Handle int as attachment ID
$src_file = get_attached_file( $src_file );
$src = wp_load_image( $src_file );
if ( !is_resource( $src ))
return $src;
$dst = imagecreatetruecolor( $dst_w, $dst_h );
if ( $src_abs ) {
$src_w -= $src_x;
$src_h -= $src_y;
}
if (function_exists('imageantialias'))
imageantialias( $dst, true );
imagecopyresampled( $dst, $src, 0, 0, $src_x, $src_y, $dst_w, $dst_h, $src_w, $src_h );
if ( !$dst_file )
$dst_file = str_replace( basename( $src_file ), 'cropped-'.basename( $src_file ), $src_file );
$dst_file = preg_replace( '/\\.[^\\.]+$/', '.jpg', $dst_file );
if ( imagejpeg( $dst, $dst_file ) )
return $dst_file;
else
return false;
}
function wp_generate_attachment_metadata( $attachment_id, $file ) {
$attachment = get_post( $attachment_id );
$metadata = array();
if ( preg_match('!^image/!', get_post_mime_type( $attachment )) ) {
$imagesize = getimagesize($file);
$metadata['width'] = $imagesize['0'];
$metadata['height'] = $imagesize['1'];
list($uwidth, $uheight) = get_udims($metadata['width'], $metadata['height']);
$metadata['hwstring_small'] = "height='$uheight' width='$uwidth'";
$metadata['file'] = $file;
$max = apply_filters( 'wp_thumbnail_creation_size_limit', 3 * 1024 * 1024, $attachment_id, $file );
if ( $max < 0 || $metadata['width'] * $metadata['height'] < $max ) {
$max_side = apply_filters( 'wp_thumbnail_max_side_length', 128, $attachment_id, $file );
$thumb = wp_create_thumbnail( $file, $max_side );
if ( @file_exists($thumb) )
$metadata['thumb'] = basename($thumb);
}
}
return apply_filters( 'wp_generate_attachment_metadata', $metadata );
}
function wp_load_image( $file ) {
if ( ctype_digit( $file ) )
$file = get_attached_file( $file );
if ( !file_exists( $file ) )
return sprintf(__("File '%s' doesn't exist?"), $file);
if ( ! function_exists('imagecreatefromstring') )
return __('The GD image library is not installed.');
$contents = file_get_contents( $file );
$image = imagecreatefromstring( $contents );
if ( !is_resource( $image ) )
return sprintf(__("File '%s' is not an image."), $file);
return $image;
}
function wp_shrink_dimensions( $width, $height, $wmax = 128, $hmax = 96 ) {
if ( $height <= $hmax && $width <= $wmax )
return array( $width, $height);
elseif ( $width / $height > $wmax / $hmax )
return array( $wmax, (int) ($height / $width * $wmax ));
else
return array( (int) ($width / $height * $hmax ), $hmax );
}
?>
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