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2017-08-15 16:59:01 +08:00
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+//
+//  UIView+YYAdd.h
+//  YYKit <https://github.com/ibireme/YYKit>
+//
+//  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 (UMComAddition)
+
+/**
+ Create a snapshot image of the complete view hierarchy.
+ */
+- (UIImage *)snapshotImage_;
+
+/**
+ Create a snapshot image of the complete view hierarchy.
+ @discussion It's faster than "snapshotImage", but may cause screen updates.
+ See -[UIView drawViewHierarchyInRect:afterScreenUpdates:] for more information.
+ */
+- (UIImage *)snapshotImageAfterScreenUpdates_:(BOOL)afterUpdates;
+
+/**
+ Create a snapshot PDF of the complete view hierarchy.
+ */
+- (NSData *)snapshotPDF_;
+
+/**
+ Shortcut to set the view.layer's shadow
+ 
+ @param color  Shadow Color
+ @param offset Shadow offset
+ @param radius Shadow radius
+ */
+- (void)setLayerShadow_:(UIColor*)color offset:(CGSize)offset radius:(CGFloat)radius;
+
+/**
+ Remove all subviews.
+ 
+ @warning Never call this method inside your view's drawRect: method.
+ */
+- (void)removeAllSubviews_;
+
+/**
+ Returns the view's view controller (may be nil).
+ */
+@property (nonatomic, readonly) UIViewController *viewController_;
+
+/**
+ Returns the visible alpha on screen, taking into account superview and window.
+ */
+@property (nonatomic, readonly) CGFloat 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)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)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)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)convertRect_:(CGRect)rect fromViewOrWindow:(UIView *)view;
+
+
+@property (nonatomic) CGFloat left_;        ///< Shortcut for frame.origin.x.
+@property (nonatomic) CGFloat top_;         ///< Shortcut for frame.origin.y
+@property (nonatomic) CGFloat right_;       ///< Shortcut for frame.origin.x + frame.size.width
+@property (nonatomic) CGFloat bottom_;      ///< Shortcut for frame.origin.y + frame.size.height
+@property (nonatomic) CGFloat width_;       ///< Shortcut for frame.size.width.
+@property (nonatomic) CGFloat height_;      ///< Shortcut for frame.size.height.
+@property (nonatomic) CGFloat centerX_;     ///< Shortcut for center.x
+@property (nonatomic) CGFloat centerY_;     ///< Shortcut for center.y
+@property (nonatomic) CGPoint origin_;      ///< Shortcut for frame.origin.
+@property (nonatomic) CGSize  size_;        ///< Shortcut for frame.size.
+
+@end