60 lines
2.4 KiB
Objective-C
60 lines
2.4 KiB
Objective-C
//
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// NetImageYYLabel.m
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// YUMI
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//
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// Created by zu on 2021/11/2.
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//
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#import "XPNetImageYYLabel.h"
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#import "NetImageView.h"
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#import "XPRoomMessageConstant.h"
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#import "NSArray+Safe.h"
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@implementation XPNetImageYYLabel
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- (void)setAttributedText:(NSAttributedString *)attributedText {
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NSMutableAttributedString* attributedTextCopy = [attributedText mutableCopy];
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CGSize maxSize = CGSizeMake(kRoomMessageMaxWidth - 24, MAXFLOAT);
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YYTextLayout * layout = [YYTextLayout layoutWithContainerSize:maxSize text:attributedText];
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for (int i = 0; i< layout.attachments.count; i++) {
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YYTextAttachment * attachment = [layout.attachments safeObjectAtIndex1:i];
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if (!attachment || ![attachment.content isKindOfClass:[NetImageView class]]) continue;
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NetImageView* imageView = attachment.content;
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NSValue * value = [layout.attachmentRanges safeObjectAtIndex1:i];
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NSRange range = value.rangeValue;
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if (!imageView.imageUrl) continue;
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if (imageView.state == NetImageStateLoaded) {
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attributedTextCopy = [self updateNetImageAttribute:imageView attributes:attributedTextCopy range:range];
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continue;
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}else {
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[imageView loadImage:^(UIImage * _Nonnull image, NSURL * _Nonnull url) {
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imageView.image = image;
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[super setAttributedText:[self updateNetImageAttribute:imageView attributes:attributedTextCopy range:range]];
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}];
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}
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}
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[super setAttributedText:attributedTextCopy];
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}
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- (NSMutableAttributedString*)updateNetImageAttribute:(NetImageView*)imageView attributes:(NSMutableAttributedString*)attributes range:(NSRange)range{
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UIImage* image = imageView.image;
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CGSize size;
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if (image != nil){
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CGFloat scale = image.size.width / image.size.height;
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// 目前是根据原高度（imageView.bounds.size.height）等比例缩放图片。
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size = CGSizeMake(imageView.bounds.size.height * scale, imageView.bounds.size.height);
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imageView.bounds = CGRectMake(0, 0, size.width, size.height);
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}else{
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size = CGSizeMake(16, 16);
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imageView.bounds = CGRectMake(0, 0, 16, 16);
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}
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NSMutableAttributedString * replaceAttr = [NSMutableAttributedString yy_attachmentStringWithContent:imageView contentMode:UIViewContentModeScaleAspectFit attachmentSize:size alignToFont:[UIFont systemFontOfSize:15.0] alignment:YYTextVerticalAlignmentCenter];
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[attributes replaceCharactersInRange:range withAttributedString:replaceAttr];
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return attributes;
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}
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@end
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