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fix bug : replace device scale with image scale #1

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fix bug : replace device scale with image scale #1

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184298c
fix bug : replace device scale with image scale
Feb 25, 2016
0163e38
remove some extra code that no use
Feb 25, 2016
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14 changes: 2 additions & 12 deletions VPImageCropper/VPImageCropperViewController.m
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Original file line number Diff line number Diff line change
Expand Up @@ -10,7 +10,6 @@

#define SCALE_FRAME_Y 100.0f
#define BOUNDCE_DURATION 0.3f
#define kDeviceScale [UIScreen mainScreen].scale

@interface VPImageCropperViewController ()

Expand Down Expand Up @@ -273,21 +272,12 @@ -(UIImage *)getSubImage{
x = x + (w - newW) / 2; y = 0;
w = newH; h = newH;
}
//乘以图片的分辨率，保证截到一张完整的图（分辨率：kDeviceScale）
CGRect myImageRect = CGRectMake(x*kDeviceScale,y*kDeviceScale, w*kDeviceScale, h*kDeviceScale);
//乘以图片的分辨率，保证截到一张完整的图（分辨率：self.originalImage.scale）
CGRect myImageRect = CGRectMake(x*self.originalImage.scale,y*self.originalImage.scale, w*self.originalImage.scale, h*self.originalImage.scale);
CGImageRef imageRef = self.originalImage.CGImage;
CGImageRef subImageRef = CGImageCreateWithImageInRect(imageRef, myImageRect);
CGSize size;
size.width = myImageRect.size.width;
size.height = myImageRect.size.height;
//UIGraphicsBeginImageContext(size);
//设置图片的分辨率，保证图片的清晰度(kDeviceScale)
UIGraphicsBeginImageContextWithOptions(size,NO,kDeviceScale);
CGContextRef context = UIGraphicsGetCurrentContext();
CGContextDrawImage(context, myImageRect, subImageRef);
UIImage *smallImage = [UIImage imageWithCGImage:subImageRef];
CGImageRelease(subImageRef);
UIGraphicsEndImageContext();
return smallImage;
}

Expand Down