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2017-08-15 16:59:01 +08:00
commit bdc83e07ef
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+//
+//  SDWebImageCompat.m
+//  SDWebImage
+//
+//  Created by Olivier Poitrey on 11/12/12.
+//  Copyright (c) 2012 Dailymotion. All rights reserved.
+//
+
+#import "SDWebImageCompat.h"
+
+#if !__has_feature(objc_arc)
+#error SDWebImage is ARC only. Either turn on ARC for the project or use -fobjc-arc flag
+#endif
+
+inline UIImage *SDScaledImageForKey(NSString *key, UIImage *image) {
+    if (!image) {
+        return nil;
+    }
+    
+    if ([image.images count] > 0) {
+        NSMutableArray *scaledImages = [NSMutableArray array];
+
+        for (UIImage *tempImage in image.images) {
+            [scaledImages addObject:SDScaledImageForKey(key, tempImage)];
+        }
+
+        return [UIImage animatedImageWithImages:scaledImages duration:image.duration];
+    }
+    else {
+        if ([[UIScreen mainScreen] respondsToSelector:@selector(scale)]) {
+            CGFloat scale = 1;
+            if (key.length >= 8) {
+                NSRange range = [key rangeOfString:@"@2x."];
+                if (range.location != NSNotFound) {
+                    scale = 2.0;
+                }
+                
+                range = [key rangeOfString:@"@3x."];
+                if (range.location != NSNotFound) {
+                    scale = 3.0;
+                }
+            }
+
+            UIImage *scaledImage = [[UIImage alloc] initWithCGImage:image.CGImage scale:scale orientation:image.imageOrientation];
+            image = scaledImage;
+        }
+        return image;
+    }
+}
+
+NSString *const SDWebImageErrorDomain = @"SDWebImageErrorDomain";