//
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// UIImageView+DDKit.m
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// DDCategory
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//
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// Created by DeJohn Dong on 15-3-20.
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// Copyright (c) 2015年 DDKit. All rights reserved.
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//
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#import "UIImageView+DDKit.h"
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#import "UIImageView+WebCache.h"
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@implementation UIImageView (DDKit)
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@end
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@implementation UIImageView (DDPlaceholder)
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- (void)sd_setImageWithURL:(NSURL *)url placeholderImageScale:(UIImage *)placeholder{
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placeholder = [self scaleImage:placeholder];
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[self sd_setImageWithURL:url placeholderImage:placeholder];
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}
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- (UIImage *)scaleImage:(UIImage *)originImage{
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CGSize imageSize = self.frame.size;
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//判断图片尺寸是否小于UIImageView的尺寸
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if(imageSize.width <= originImage.size.width ||
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imageSize.height <= originImage.size.height)
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return originImage;
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//绘制新的图片
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UIGraphicsBeginImageContextWithOptions(imageSize, 0, [UIScreen mainScreen].scale);
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[[UIColor colorWithRed:238.0/255.0f green:238.0/255.0f blue:238.0/255.0f alpha:1.0f] set];
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UIRectFill(CGRectMake(0, 0, imageSize.width, imageSize.height));
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[originImage drawAtPoint:CGPointMake((imageSize.width - originImage.size.width)/2.0f, (imageSize.height - originImage.size.height)/2.0f)];
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UIImage *image = UIGraphicsGetImageFromCurrentImageContext();
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UIGraphicsEndImageContext();
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return image;
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}
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@end
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