UITextField align left margin

如果我们想让我们的UITextField输入的字体偏移几个像素，我们常常用空格来代替，有时候我们不想用空格的话怎么办？

#import <UIKit/UIKit.h>

@interface MYTextField : UITextField

@end

@implementation MYTextField

- (CGRect)textRectForBounds:(CGRect)bounds {
    int margin = 10;
    CGRect inset = CGRectMake(bounds.origin.x + margin, bounds.origin.y, bounds.size.width - margin, bounds.size.height);
    return inset;
}

- (CGRect)editingRectForBounds:(CGRect)bounds {
    int margin = 10;
    CGRect inset = CGRectMake(bounds.origin.x + margin, bounds.origin.y, bounds.size.width - margin, bounds.size.height);
    return inset;
}

@end