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<?php
/**
 * @author    ThemePunch <info@themepunch.com>
 * @link      http://www.themepunch.com/
 * @version: 1.0.4 (7.9.2017)
 * @copyright 2017 ThemePunch
 */

if( !defined( 'ABSPATH') ) exit();

if(!class_exists('TPColorpicker')){
	class TPColorpicker {
		
		
		/**
		 * @since 5.3.1.6
		 */
		public function __construct(){	
			add_filter(AJAX_ACTION, array($this, 'init_ajax'), 10, 6);
		}
		
		/**
		 * @since 5.3.1.6
		 */
		public static $isColor = '/(^#[0-9A-F]{6}$)|(^#[0-9A-F]{3}$)/i';

		/**
		 * best option for frontend
		 * @since 5.3.1.6
		 */
		public static function get($val) {
	        
	        if(!$val || empty($val)) return 'transparent';
	        $process = TPColorpicker::process($val, true);
	        return $process[0];
	        
	    }
		
		/**
		 * return usable CSS value from stored color data value
		 * @since 5.3.1.6
		 */
		public static function parse($val, $prop, $returnColorType){
			
			$val = TPColorpicker::process($val, true);
			$ar = array();
				
			if(!$prop) $ar[0] = $val[0];	
			else $ar[0] = $prop + ': ' + $val[0] + ';';
				
			if($returnColorType) $ar[1] = $val[1];
			return $ar;
		
		}


		/**
		 * convert hex and opacity to rgba
		 * @since 5.3.1.6
		 */
		public static function convert($color, $opacity){
			if( $opacity == "transparent" ){
				return 'rgba(0,0,0,0)';
			} 
			if($color=="" ) return '';
			if(strpos($color, "[{") !== false  || strpos($color,'gradient') !== false ) return TPColorpicker::get($color);
			
			if(!is_bool($opacity) && "".$opacity === "0"){
				return 'transparent';
			} 

			if($opacity==-1 || !$opacity || empty($opacity) || !is_numeric($opacity) || $color == "transparent" || $opacity === 1 || $opacity == 100 ) {
				if(strpos($color,'rgba') === false && strpos($color,'#') !== false) {
					return TPColorpicker::processRgba(TPColorpicker::sanitizeHex($color), $opacity);
				}
				else {
					$color = TPColorpicker::process($color, true);
					return $color[0];
				}
			}

			$opacity = floatval($opacity);
			if($opacity < 1) $opacity = $opacity * 100;
			$opacity = round($opacity);
			$opacity = $opacity > 100 ? 100 : $opacity;
			$opacity = $opacity < -1 ? 0 : $opacity;

			if($opacity === 0) return 'transparent';

			if(strpos($color,'#') !== false ) {
				
				return TPColorpicker::processRgba(TPColorpicker::sanitizeHex($color), $opacity);
				
			}
			else {		
				$color = TPColorpicker::rgbValues($color, 3);
				return TPColorpicker::rgbaString($color[0], $color[1], $color[2], $opacity);
				
			}
		}


		/**
		 * core function for converting ColorPicker input values
		 * @since 5.3.1.6
		 */
		public static function process($clr, $processColor = false){
			
			if(empty($clr)) return array('transparent', 'transparent');

			if(!is_string($clr) ) {
				if($processColor) $clr = TPColorpicker::sanatizeGradient($clr);
				return array( TPColorpicker::processGradient($clr), 'gradient', $clr );
			}
			else if( trim($clr) == 'transparent' ) {
				
				return array('transparent', 'transparent');
				
			}
			else if( strpos( $clr, "[{" ) !== false ) {
				try {
					$clr = json_decode( str_replace("amp;", '',str_replace("&", '"', $clr)) );

					if($processColor) $clr = TPColorpicker::sanatizeGradient($clr);

					return array(TPColorpicker::processGradient($clr), 'gradient', $clr);
				}
				catch (Exception $e) {
					return '{"type":"linear","angle":"0","colors":[{"r":"255","g":"255","b":"255","a":"1","position":"0","align":"bottom"},{"r":"0","g":"0","b":"0","a":"1","position":"100","align":"bottom"}]}';
				}
			}

			else if( strpos($clr,'#') !== false ) {
				
				return array(TPColorpicker::sanitizeHex($clr), 'hex');
				
			}
			else if( strpos($clr,'rgba') !== false ) {
				$clr = preg_replace( '/\s+/', '', $clr ) ;
				return array($clr, 'rgba');
				
			}
			else if( strpos($clr,'rgb') !== false ) {
				$clr = preg_replace('/\s+/', '', $clr);
				return array($clr, 'rgb');
				
			}
			else if(preg_match(TPColorpicker::$isColor, $clr) !== false) {
				$clr = preg_replace('/\s+/', '', $clr);
				return array($clr, 'hex');
			}
			
			return array('transparent', 'transparent');

		}

		/**
		 * clean up duplicate values in gradient
		 * @since 5.3.1.6
		 */
		public static function sanatizeGradient($obj) {

			$colors = $obj->colors;
			$len = sizeof($colors);
			$ar = array();

			for($i = 0; $i < $len; $i++) {
				
				$cur = $colors[$i];
				unset($cur->align);
				
				if( isset($prev) ) {
					
					if(json_encode($cur) !== json_encode($prev)) {
						
						$ar[sizeof($ar)] = $cur;
						
					}
					
				}
				else {
					
					$ar[sizeof($ar)] = $cur;
					
				}
				
				$prev = $cur;
				
			}
			
			$obj->colors = $ar;
			return $obj;
			
		}

		/**
		 * convert gradient object to CSS background gradient value
		 * @since 5.3.1.6
		 */
		public static function processGradient($obj){
			$tpe = $obj->type;
			$begin = $tpe . '-gradient(';
			$middle = $tpe === 'linear' ? $obj->angle . 'deg, ' : 'ellipse at center, ';
			$colors = $obj->colors;
			$len = sizeof($colors);	
			$end = '';
			
			for($i = 0; $i < $len; $i++) {
				
				if($i > 0) $end .= ', ';
				$clr = $colors[$i];
				$end .= 'rgba(' . $clr->r . ',' . $clr->g . ',' . $clr->b . ',' . $clr->a . ') ' . $clr->position . '%';
				
			}
			
			return $begin . $middle . $end . ')';
		}


		/**
		 * convert rgb values to CSS value
		 * @since 5.3.1.6
		 */
		public static function rgbValues($values, $num) {
		
			$values = substr( $values, strpos($values, '(') + 1  , strpos($values, ')')-strpos($values, '(') - 1 );
			$values = explode(",", $values);
			
			if(sizeof($values) == 3 && $num == 4) $values[3] = '1';
			for($i = 0; $i < $num; $i++) {
				if(isset($values[$i])) $values[$i] = trim($values[$i]);
			}
			
			return $values;
			
		}

		/**
		 * convert rgba data values to CSS value
		 * @since 5.3.1.6
		 */
		public static function rgbaString($r, $g, $b, $a) {
			if($a > 1){
				$a = "".number_format($a * 0.01 ,  2);
	      		$a = str_replace(".00", "", $a);
	      	}
			return 'rgba(' . $r . ',' . $g . ',' . $b . ',' . $a . ')';
			
		}

		/**
		 * convert rgb to hex
		 * @since 5.3.1.6
		 */
		public static function rgbToHex($clr) {
			
			$values = TPColorpicker::rgbValues($clr, 3);
			return TPColorpicker::getRgbToHex($values[0], $values[1], $values[2]);
			
		}

		/**
		 * convert rgba to hex
		 * @since 5.3.1.6
		 */
		public static function rgbaToHex($clr) {
			
			$values = TPColorpicker::rgbValues($clr, 4);

			return array(TPColorpicker::getRgbToHex($values[0], $values[1], $values[2]), $values[3]);
			
		}

		/**
		 * get opacity value from rgba
		 * @since 5.3.1.6
		 */
		public static function getOpacity($val){
			$rgb = TPColorpicker::rgbValues($val, 4);
			return intval($rgb[3] * 100, 10) + '%';
		}

		/**
		 * convert rgb to hex
		 * @since 5.3.1.6
		 */
		public static function getRgbToHex($r, $g, $b){
			$rgb = array($r, $g, $b);
			$hex = "#";
	   		$hex .= str_pad(dechex($rgb[0]), 2, "0", STR_PAD_LEFT);
	   		$hex .= str_pad(dechex($rgb[1]), 2, "0", STR_PAD_LEFT);
	   		$hex .= str_pad(dechex($rgb[2]), 2, "0", STR_PAD_LEFT);
	   		return $hex;
		}

		/**
		 * convert hex and opacity values to rgba
		 * @since 5.3.1.6
		 */
		public static function joinToRgba($val){
			$val = explode('||', $val);
			return TPColorpicker::convert($val[0], $val[1]);
		}

		/**
		 * convert hex to rgba
		 * @since 5.3.1.6
		 */
		public static function processRgba($hex, $opacity=false){
			
			$hex = trim(str_replace('#', '' , $hex));
			
			$rgb = $opacity!==false ? 'rgba' : 'rgb';  
			$r = hexdec(substr($hex,0,2));
	      	$g = hexdec(substr($hex,2,2));
	      	$b = hexdec(substr($hex,4,2));
	      	
	      	$color = $rgb . "(" . $r . "," . $g . "," . $b ;

	      	if($opacity!==false){
	      		if($opacity > 1)
	      			$opacity = "".number_format($opacity * 0.01 ,  2);
	      		$opacity = str_replace(".00", "", $opacity);
	      		$color .= ',' . $opacity;
	      	}

	      	$color .= ')';

	      	return $color;
		}

		/**
		 * sanitize hex color values
		 * @since 5.3.1.6
		 */
		public static function sanitizeHex($hex){
			$hex = trim(str_replace('#', '' , $hex));
			if (strlen($hex) == 3) {
			    $hex[5] = $hex[2]; // f60##0
			    $hex[4] = $hex[2]; // f60#00
			    $hex[3] = $hex[1]; // f60600
			    $hex[2] = $hex[1]; // f66600
			    $hex[1] = $hex[0]; // ff6600
			}
			return '#'.$hex;
		}
		
		
		/**
		 * Save presets
		 * @since 5.3.2
		 */
		public static function save_color_presets($presets){
			
			update_option('tp_colorpicker_presets', $presets);
			
			return self::get_color_presets();
		}
		
		
		/**
		 * Load presets
		 * @since 5.3.2
		 */
		public static function get_color_presets(){
			
			return get_option('tp_colorpicker_presets', array());
			
		}
		
	}
}
?>