protected function _resize_padded($canvas_w, $canvas_h, $canvas_color, $width, $height, $orig_w, $orig_h, $origin_x, $origin_y)
{
$src_x = $src_y = 0;
$src_w = $orig_w;
$src_h = $orig_h;
$cmp_x = $orig_w / $width;
$cmp_y = $orig_h / $height;
// calculate x or y coordinate and width or height of source
if ($cmp_x > $cmp_y) {
$src_w = round($orig_w / $cmp_x * $cmp_y);
$src_x = round(($orig_w - $orig_w / $cmp_x * $cmp_y) / 2);
} else {
if ($cmp_y > $cmp_x) {
$src_h = round($orig_h / $cmp_y * $cmp_x);
$src_y = round(($orig_h - $orig_h / $cmp_y * $cmp_x) / 2);
}
}
$resized = wp_imagecreatetruecolor($canvas_w, $canvas_h);
if ($canvas_color === 'transparent') {
$color = imagecolorallocatealpha($resized, 255, 255, 255, 127);
} else {
$rgb = cnColor::rgb2hex2rgb($canvas_color);
$color = imagecolorallocatealpha($resized, $rgb['red'], $rgb['green'], $rgb['blue'], 0);
}
// Fill the background of the new image with allocated color.
imagefill($resized, 0, 0, $color);
// Restore transparency.
imagesavealpha($resized, TRUE);
imagecopyresampled($resized, $this->image, $origin_x, $origin_y, $src_x, $src_y, $width, $height, $src_w, $src_h);
if (is_resource($resized)) {
$this->update_size($width, $height);
return $resized;
}
return new WP_Error('image_resize_error', __('Image resize failed.', 'connections'), $this->file);
}
/**
* Parses a TimThumb compatible URL via the CN_IMAGE_ENDPOINT root rewrite endpoint
* and stream the image to the browser with the correct headers for the image type being served.
*
* Streams an image resource to the browser or a error message.
*
* @access private
* @since 8.1
* @static
*
* @uses get_query_var()
* @uses path_is_absolute()
* @uses cnColor::rgb2hex2rgb()
* @uses self::get()
* @uses is_wp_error()
*/
public static function query()
{
/** @var wpdb $wpdb */
global $wpdb;
if (get_query_var(CN_IMAGE_ENDPOINT)) {
if (path_is_absolute(get_query_var('src'))) {
header($_SERVER['SERVER_PROTOCOL'] . ' 400 Bad Request');
echo '<h1>ERROR/s:</h1><ul><li>Source is file path. Source must be a local file URL.</li></ul>';
exit;
}
$atts = array();
if (get_query_var('cn-entry-slug')) {
$sql = $wpdb->prepare('SELECT slug FROM ' . CN_ENTRY_TABLE . ' WHERE slug=%s', get_query_var('cn-entry-slug'));
$result = $wpdb->get_var($sql);
if (is_null($result)) {
header($_SERVER['SERVER_PROTOCOL'] . ' 400 Bad Request');
echo '<h1>ERROR/s:</h1><ul><li>Cheating?</li></ul>';
exit;
} else {
$atts['sub_dir'] = $result;
}
}
if (get_query_var('w')) {
$atts['width'] = get_query_var('w');
}
if (get_query_var('h')) {
$atts['height'] = get_query_var('h');
}
if (get_query_var('zc') || get_query_var('zc') === '0') {
$atts['crop_mode'] = get_query_var('zc');
}
if (get_query_var('a')) {
$atts['crop_focus'] = array('center', 'center');
if (strpos(get_query_var('a'), 't') !== FALSE) {
$atts['crop_focus'][1] = 'top';
}
if (strpos(get_query_var('a'), 'r') !== FALSE) {
$atts['crop_focus'][0] = 'right';
}
if (strpos(get_query_var('a'), 'b') !== FALSE) {
$atts['crop_focus'][1] = 'bottom';
}
if (strpos(get_query_var('a'), 'l') !== FALSE) {
$atts['crop_focus'][0] = 'left';
}
$atts['crop_focus'] = implode(',', $atts['crop_focus']);
}
if (get_query_var('f')) {
$filters = explode('|', get_query_var('f'));
foreach ($filters as $filter) {
$param = explode(',', $filter);
for ($i = 0; $i < 4; $i++) {
if (!isset($param[$i])) {
$param[$i] = NULL;
} else {
$param[$i] = $param[$i];
}
}
switch ($param[0]) {
case '1':
$atts['negate'] = TRUE;
break;
case '2':
$atts['grayscale'] = TRUE;
break;
case '3':
$atts['brightness'] = $param[1];
break;
case '4':
$atts['contrast'] = $param[1];
break;
case '5':
$atts['colorize'] = cnColor::rgb2hex2rgb($param[1] . ',' . $param[2] . ',' . $param[3]);
break;
case '6':
$atts['detect_edges'] = TRUE;
break;
case '7':
$atts['emboss'] = TRUE;
break;
case '8':
$atts['gaussian_blur'] = TRUE;
break;
case '9':
$atts['blur'] = TRUE;
break;
case '10':
$atts['sketchy'] = TRUE;
break;
case '11':
$atts['smooth'] = $param[1];
}
}
}
if (get_query_var('s') && get_query_var('s') === '1') {
$atts['sharpen'] = TRUE;
}
if (get_query_var('o')) {
$atts['opacity'] = get_query_var('o');
}
if (get_query_var('q')) {
$atts['quality'] = get_query_var('q');
}
if (get_query_var('cc')) {
$atts['canvas_color'] = get_query_var('cc');
}
// This needs to be set after the `cc` query var because it should override any value set using the `cc` query var, just like TimThumb.
if (get_query_var('ct') && get_query_var('ct') === '1') {
$atts['canvas_color'] = 'transparent';
}
// Process the image.
$image = self::get(get_query_var('src'), $atts, 'editor');
// If there been an error
if (is_wp_error($image)) {
$errors = implode('</li><li>', $image->get_error_messages());
// Display the error messages.
header($_SERVER['SERVER_PROTOCOL'] . ' 400 Bad Request');
echo '<h1>ERROR/s:</h1><ul><li>' . wp_kses_post($errors) . '</li></ul>';
exit;
}
// Ensure a stream quality is set otherwise we get a block mess as an image when serving a cached image.
$quality = get_query_var('q') ? get_query_var('q') : 90;
// Ensure valid value for $quality. If invalid valid is supplied reset to the default of 90, matching WP core.
if (filter_var((int) $quality, FILTER_VALIDATE_INT, array('options' => array('min_range' => 1, 'max_range' => 100))) === FALSE) {
$quality = 90;
}
$image->set_quality($quality);
$image->stream();
exit;
}
}
