//
//  UIView+YYText.h
//  YYText <https://github.com/ibireme/YYText>
//
//  Created by ibireme on 13/4/3.
//  Copyright (c) 2015 ibireme.
//
//  This source code is licensed under the MIT-style license found in the
//  LICENSE file in the root directory of this source tree.
//

#import <UIKit/UIKit.h>

/**
 Provides extensions for `UIView`.
 */
@interface UIView (YYText)

/**
 Returns the view's view controller (may be nil).
 */
@property (nonatomic, readonly) UIViewController *yy_viewController;

/**
 Returns the visible alpha on screen, taking into account superview and window.
 */
@property (nonatomic, readonly) CGFloat yy_visibleAlpha;

/**
 Converts a point from the receiver's coordinate system to that of the specified view or window.
 
 @param point A point specified in the local coordinate system (bounds) of the receiver.
 @param view  The view or window into whose coordinate system point is to be converted.
 If view is nil, this method instead converts to window base coordinates.
 @return The point converted to the coordinate system of view.
 */
- (CGPoint)yy_convertPoint:(CGPoint)point toViewOrWindow:(UIView *)view;

/**
 Converts a point from the coordinate system of a given view or window to that of the receiver.
 
 @param point A point specified in the local coordinate system (bounds) of view.
 @param view  The view or window with point in its coordinate system.
 If view is nil, this method instead converts from window base coordinates.
 @return The point converted to the local coordinate system (bounds) of the receiver.
 */
- (CGPoint)yy_convertPoint:(CGPoint)point fromViewOrWindow:(UIView *)view;

/**
 Converts a rectangle from the receiver's coordinate system to that of another view or window.
 
 @param rect A rectangle specified in the local coordinate system (bounds) of the receiver.
 @param view The view or window that is the target of the conversion operation. If view is nil, this method instead converts to window base coordinates.
 @return The converted rectangle.
 */
- (CGRect)yy_convertRect:(CGRect)rect toViewOrWindow:(UIView *)view;

/**
 Converts a rectangle from the coordinate system of another view or window to that of the receiver.
 
 @param rect A rectangle specified in the local coordinate system (bounds) of view.
 @param view The view or window with rect in its coordinate system.
 If view is nil, this method instead converts from window base coordinates.
 @return The converted rectangle.
 */
- (CGRect)yy_convertRect:(CGRect)rect fromViewOrWindow:(UIView *)view;

@end
