81 lines
2.6 KiB
Objective-C
81 lines
2.6 KiB
Objective-C
//
|
|
// MJRefreshNormalTrailer.m
|
|
// MJRefresh
|
|
//
|
|
// Created by kinarobin on 2020/5/3.
|
|
// Copyright © 2020 小码哥. All rights reserved.
|
|
//
|
|
|
|
#import "MJRefreshNormalTrailer.h"
|
|
#import "NSBundle+MJRefresh.h"
|
|
#import "UIView+MJExtension.h"
|
|
|
|
@interface MJRefreshNormalTrailer() {
|
|
__unsafe_unretained UIImageView *_arrowView;
|
|
}
|
|
@end
|
|
|
|
@implementation MJRefreshNormalTrailer
|
|
#pragma mark - 懒加载子控件
|
|
- (UIImageView *)arrowView {
|
|
if (!_arrowView) {
|
|
UIImageView *arrowView = [[UIImageView alloc] initWithImage:[NSBundle mj_trailArrowImage]];
|
|
[self addSubview:_arrowView = arrowView];
|
|
}
|
|
return _arrowView;
|
|
}
|
|
|
|
- (void)placeSubviews {
|
|
[super placeSubviews];
|
|
|
|
CGSize arrowSize = self.arrowView.image.size;
|
|
// 箭头的中心点
|
|
CGPoint selfCenter = CGPointMake(self.mj_w * 0.5, self.mj_h * 0.5);
|
|
CGPoint arrowCenter = CGPointMake(arrowSize.width * 0.5 + 5, self.mj_h * 0.5);
|
|
BOOL stateHidden = self.stateLabel.isHidden;
|
|
|
|
if (self.arrowView.constraints.count == 0) {
|
|
self.arrowView.mj_size = self.arrowView.image.size;
|
|
self.arrowView.center = stateHidden ? selfCenter : arrowCenter ;
|
|
}
|
|
self.arrowView.tintColor = self.stateLabel.textColor;
|
|
|
|
if (stateHidden) return;
|
|
|
|
BOOL noConstrainsOnStatusLabel = self.stateLabel.constraints.count == 0;
|
|
CGFloat stateLabelW = ceil(self.stateLabel.font.pointSize);
|
|
// 状态
|
|
if (noConstrainsOnStatusLabel) {
|
|
BOOL arrowHidden = self.arrowView.isHidden;
|
|
CGFloat stateCenterX = (self.mj_w + arrowSize.width) * 0.5;
|
|
self.stateLabel.center = arrowHidden ? selfCenter : CGPointMake(stateCenterX, self.mj_h * 0.5);
|
|
self.stateLabel.mj_size = CGSizeMake(stateLabelW, self.mj_h) ;
|
|
}
|
|
}
|
|
|
|
- (void)setState:(MJRefreshState)state {
|
|
MJRefreshCheckState
|
|
// 根据状态做事情
|
|
if (state == MJRefreshStateIdle) {
|
|
if (oldState == MJRefreshStateRefreshing) {
|
|
[UIView animateWithDuration:self.fastAnimationDuration animations:^{
|
|
self.arrowView.transform = CGAffineTransformMakeRotation(M_PI);
|
|
} completion:^(BOOL finished) {
|
|
self.arrowView.transform = CGAffineTransformIdentity;
|
|
}];
|
|
} else {
|
|
[UIView animateWithDuration:self.fastAnimationDuration animations:^{
|
|
self.arrowView.transform = CGAffineTransformIdentity;
|
|
}];
|
|
}
|
|
} else if (state == MJRefreshStatePulling) {
|
|
[UIView animateWithDuration:self.fastAnimationDuration animations:^{
|
|
self.arrowView.transform = CGAffineTransformMakeRotation(M_PI);
|
|
}];
|
|
}
|
|
}
|
|
|
|
|
|
|
|
@end
|