System Windowing

class ProgramWindow{ public $x; public $y; public $width; public $height; function __construct(){ $this->x = 0; $this->y = 0; $this->width = 800; $this->height = 600; } function resize($size){ $this->width = $size->width; $this->height = $size->height; } function move($position){ $this->x = $position->x; $this->y = $position->y; } } <?php class Size{ public $width; public $height; function __construct($height,$width){ $this->width = $width; $this->height = $height; } } <?php class Position{ public $x; public $y; function __construct($y,$x){ $this->y = $y; $this->x = $x; } }