text: //
  //  UIView+Addition.h
  //  DXDesign
  //
  //  Created by caxa on 15-7-9.
  //  Copyright (c) 2015年 mlf. All rights reserved.
  //
  
  #import <UIKit/UIKit.h>
  
  @interface UIView (Addition)
  
  
  /**
   * Shortcut for frame.origin.x.
   *
   * Sets frame.origin.x = left
   */
  @property (nonatomic) CGFloat left;
  
  /**
   * Shortcut for frame.origin.y
   *
   * Sets frame.origin.y = top
   */
  @property (nonatomic) CGFloat top;
  
  /**
   * Shortcut for frame.origin.x + frame.size.width
   *
   * Sets frame.origin.x = right - frame.size.width
   */
  @property (nonatomic) CGFloat right;
  
  /**
   * Shortcut for frame.origin.y + frame.size.height
   *
   * Sets frame.origin.y = bottom - frame.size.height
   */
  @property (nonatomic) CGFloat bottom;
  
  /**
   * Shortcut for frame.size.width
   *
   * Sets frame.size.width = width
   */
  @property (nonatomic) CGFloat width;
  
  /**
   * Shortcut for frame.size.height
   *
   * Sets frame.size.height = height
   */
  @property (nonatomic) CGFloat height;
  
  /**
   * Shortcut for center.x
   *
   * Sets center.x = centerX
   */
  @property (nonatomic) CGFloat centerX;
  
  /**
   * Shortcut for center.y
   *
   * Sets center.y = centerY
   */
  @property (nonatomic) CGFloat centerY;
  
  /**
   * Return the x coordinate on the screen.
   */
  @property (nonatomic, readonly) CGFloat screenX;
  
  /**
   * Return the y coordinate on the screen.
   */
  @property (nonatomic, readonly) CGFloat screenY;
  
  /**
   * Return the x coordinate on the screen, taking into account scroll views.
   */
  @property (nonatomic, readonly) CGFloat screenViewX;
  
  /**
   * Return the y coordinate on the screen, taking into account scroll views.
   */
  @property (nonatomic, readonly) CGFloat screenViewY;
  
  /**
   * Return the view frame on the screen, taking into account scroll views.
   */
  @property (nonatomic, readonly) CGRect screenFrame;
  
  /**
   * Shortcut for frame.origin
   */
  @property (nonatomic) CGPoint origin;
  
  /**
   * Shortcut for frame.size
   */
  @property (nonatomic) CGSize size;
  
  /**
   * Return the width in portrait or the height in landscape.
   */
  @property (nonatomic, readonly) CGFloat orientationWidth;
  
  /**
   * Return the height in portrait or the width in landscape.
   */
  @property (nonatomic, readonly) CGFloat orientationHeight;
  
  
  @end
  