-
- /**
- * Adapted from http://mekshq.com/how-to-convert-hexadecimal-color-code-to-rgb-or-rgba-using-php/
- * Converts a hex color code in to an RGBA string.
- *
- * @param string $color
- * @param float|boolean $opacity
- * @return boolean|string
- */
- protected function hex2rgba($color, $opacity = false)
- {
- // Return false if no color provided
- if(empty($color)) {
- return false;
- }
- // Trim any whitespace
- $color = trim($color);
-
- // Sanitize $color if "#" is provided
- if($color[0] == '#' ) {
- $color = substr($color, 1);
- }
-
- // Check if color has 6 or 3 characters and get values
- if(strlen($color) == 6) {
- $hex = array( $color[0] . $color[1], $color[2] . $color[3], $color[4] . $color[5] );
- } elseif( strlen( $color ) == 3 ) {
- $hex = array( $color[0] . $color[0], $color[1] . $color[1], $color[2] . $color[2] );
- } else {
- return false;
- }
-
- // Convert hexadec to rgb
- $rgb = array_map('hexdec', $hex);
-
- // Check if opacity is set(rgba or rgb)
- if($opacity) {
- if(abs($opacity) > 1)
- $opacity = 1.0;
- $output = 'rgba('.implode(",",$rgb).','.$opacity.')';
- } else {
- $output = 'rgb('.implode(",",$rgb).')';
- }
-
- // Return rgb(a) color string
- return $output;
- }
-