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67 lines
1.6 KiB
67 lines
1.6 KiB
4 years ago
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//
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// TYDrawViewStorage.m
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// TYAttributedLabelDemo
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//
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// Created by tanyang on 15/4/9.
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// Copyright (c) 2015年 tanyang. All rights reserved.
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//
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#import "TYViewStorage.h"
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@interface TYViewStorage ()
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@property (nonatomic, weak) UIView *superView;
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@end
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@implementation TYViewStorage
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#pragma mark - protocol
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- (void)setView:(UIView *)view
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{
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_view = view;
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if (CGSizeEqualToSize(self.size, CGSizeZero)) {
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if ([NSThread isMainThread]) {
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self.size = view.frame.size;
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} else {
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dispatch_semaphore_t signal = dispatch_semaphore_create(0);
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dispatch_sync(dispatch_get_main_queue(), ^{
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self.size = view.frame.size;
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dispatch_semaphore_signal(signal);
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});
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dispatch_semaphore_wait(signal, DISPATCH_TIME_FOREVER);
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}
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}
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}
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- (void)setOwnerView:(UIView *)ownerView
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{
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if (_view.superview) {
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[_view removeFromSuperview];
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}
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_superView = ownerView;
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}
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- (void)didNotDrawRun
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{
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[_view removeFromSuperview];
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}
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- (void)drawStorageWithRect:(CGRect)rect
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{
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if (_view == nil || _superView == nil) return;
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// 设置frame 注意 转换rect CoreText context coordinates are the opposite to UIKit so we flip the bounds
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CGAffineTransform transform = CGAffineTransformScale(CGAffineTransformMakeTranslation(0, _superView.bounds.size.height), 1.f, -1.f);
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rect = CGRectApplyAffineTransform(rect, transform);
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[_view setFrame:rect];
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[_superView addSubview:_view];
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}
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- (void)dealloc {
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[self.view performSelectorOnMainThread:@selector(removeFromSuperview) withObject:nil waitUntilDone:[NSThread isMainThread]];
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}
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@end
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