erpsuiteios/common/LayoutConstraint/UIView+RAConstraint.h

//
//  UIView+JKConstraint.h
//  Constraint
//
//  Created by Jack on 2018/12/10.
//  Copyright © 2018年 Jack Template. All rights reserved.
//

#import <UIKit/UIKit.h>

@interface RAConstraint : NSObject

@property (nonatomic,readonly,copy) RAConstraint *(^ra_offset)(CGFloat offset);
@property (nonatomic,readonly,copy) RAConstraint *(^ra_lessThanOrEqualTo)(RAConstraint *constraint);
@property (nonatomic,readonly,copy) RAConstraint *(^ra_equalTo)(RAConstraint *constraint);
@property (nonatomic,readonly,copy) RAConstraint *(^ra_greaterThanOrEqualTo)(RAConstraint *constraint);
@property (nonatomic,readonly,copy) RAConstraint *(^ra_priority)(UILayoutPriority priority);

@property (nonatomic,readonly,copy) RAConstraint *(^ra_append)(NSString *identifier);
@property (nonatomic,copy) RAConstraint *(^ra_size_greaterThanOrEqualTo)(CGFloat size);
@property (nonatomic,copy) RAConstraint *(^ra_size_lessThanOrEqualTo)(CGFloat size);

@property (nonatomic,readonly,copy) void (^ra_modify)(CGFloat constant);

@end

#pragma mark - Maker

@interface RAConstraintMaker : NSObject

@property (nonatomic,strong,readonly) RAConstraint *left;
@property (nonatomic,strong,readonly) RAConstraint *top;
@property (nonatomic,strong,readonly) RAConstraint *right;
@property (nonatomic,strong,readonly) RAConstraint *bottom;
@property (nonatomic,strong,readonly) RAConstraint *centerX;
@property (nonatomic,strong,readonly) RAConstraint *centerY;
@property (nonatomic,strong,readonly) RAConstraint *baseLine;
@property (nonatomic,strong,readonly) RAConstraint *width;
@property (nonatomic,strong,readonly) RAConstraint *height;

@property (nonatomic,strong,readonly) RAConstraint *ra_safeAreaLeft API_AVAILABLE(ios(11.0),tvos(11.0));
@property (nonatomic,strong,readonly) RAConstraint *ra_safeAreaTop API_AVAILABLE(ios(11.0),tvos(11.0));
@property (nonatomic,strong,readonly) RAConstraint *ra_safeAreaRight API_AVAILABLE(ios(11.0),tvos(11.0));
@property (nonatomic,strong,readonly) RAConstraint *ra_safeAreaBottom API_AVAILABLE(ios(11.0),tvos(11.0));

// 抗拉伸
@property (nonatomic,assign) UILayoutPriority ra_horizontalHuggingPriority;
@property (nonatomic,assign) UILayoutPriority ra_verticalHuggingPriority;

// 抗压缩
@property (nonatomic,assign) UILayoutPriority ra_horizontalCompressionResistancePriority;
@property (nonatomic,assign) UILayoutPriority ra_verticalCompressionResistancePriority;

@end

#pragma mark - UIView

@interface UIView (RAConstraint)

@property (nonatomic,strong,readonly) RAConstraint *left;
@property (nonatomic,strong,readonly) RAConstraint *top;
@property (nonatomic,strong,readonly) RAConstraint *right;
@property (nonatomic,strong,readonly) RAConstraint *bottom;
@property (nonatomic,strong,readonly) RAConstraint *centerX;
@property (nonatomic,strong,readonly) RAConstraint *centerY;
@property (nonatomic,strong,readonly) RAConstraint *baseLine;
@property (nonatomic,strong,readonly) RAConstraint *width;
@property (nonatomic,strong,readonly) RAConstraint *height;

@property (nonatomic,strong,readonly) RAConstraint *ra_safeAreaLeft API_AVAILABLE(ios(11.0),tvos(11.0));
@property (nonatomic,strong,readonly) RAConstraint *ra_safeAreaTop API_AVAILABLE(ios(11.0),tvos(11.0));
@property (nonatomic,strong,readonly) RAConstraint *ra_safeAreaRight API_AVAILABLE(ios(11.0),tvos(11.0));
@property (nonatomic,strong,readonly) RAConstraint *ra_safeAreaBottom API_AVAILABLE(ios(11.0),tvos(11.0));

@property (nonatomic,copy,readonly) void (^ra_modifyConstraint)(NSString *identifier, CGFloat constant);

- (void)ra_applyConstraints:(void(^)(RAConstraintMaker *maker))apply;

/**
 * it will remove all of its constraints before installing them again.
 */
- (void)ra_remakeConstraints:(void(^)(RAConstraintMaker *maker))remake;

@end


#pragma mark - View Controller

@interface UIViewController (RAConstraint)

@property (nonatomic,strong,readonly) RAConstraint *ra_topLayoutGuid;
@property (nonatomic,strong,readonly) RAConstraint *ra_topLayoutGuidTop;
@property (nonatomic,strong,readonly) RAConstraint *ra_topLayoutGuidBottom;

@property (nonatomic,strong,readonly) RAConstraint *ra_bottomLayoutGuid;
@property (nonatomic,strong,readonly) RAConstraint *ra_bottomLayoutGuidTop;
@property (nonatomic,strong,readonly) RAConstraint *ra_bottomLayoutGuidBottom;

@end