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AuthCodeView.m
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119 lines (111 loc) · 4.5 KB
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#import "AuthCodeView.h"
#define CountForLine 6
#define SizeForTextFont 20.0
@implementation AuthCodeView
@synthesize dataSource = _dataSource;
- (id)initWithType:(AuthCodeViewType)p_type {
self = [super init];
if (self) {
_type = p_type;
self.layer.cornerRadius = 5.0;
self.layer.masksToBounds = YES;
}
return self;
}
////
/**
* 亲写dataSource的setter方法，同时根据实现方式设置背景颜色或者图片View
**/
- (void)setDataSource:(id<AuthCodeViewDataSource>)dataSource {
_dataSource = dataSource;
if ([_dataSource respondsToSelector:@selector(authCodeView:withType:)]) {
if (_type == AuthCodeViewTypeText) {
[self setBackgroundColor:[UIColor orangeColor]];
} else {
_imgView = [[UIImageView alloc] init];
[_imgView setFrame:self.bounds];
[_imgView setBackgroundColor:[UIColor grayColor]];
[self addSubview:_imgView];
[_imgView release];
_activityView = [[UIActivityIndicatorView alloc] initWithActivityIndicatorStyle:UIActivityIndicatorViewStyleWhite];
_activityView.center = _imgView.center;
[_imgView addSubview:_activityView];
[_activityView release];
[self _configureImageView:[_dataSource authCodeView:self withType:AuthCodeViewTypeURL]];
}
}
}
/**
* 亲写drawRect:方法，绘制文字和干扰线
**/
- (void)drawRect:(CGRect)rect {
[super drawRect:rect];
if ([_dataSource respondsToSelector:@selector(authCodeView:withType:)]) {
// 背景色
float red = arc4random() % 100 / 100.0;
float green = arc4random() % 100 / 100.0;
float blue = arc4random() % 100 / 100.0;
UIColor *color = [UIColor colorWithRed:red green:green blue:blue alpha:1.0];
[self setBackgroundColor:color];
// 文字
NSString *text = [_dataSource authCodeView:self withType:AuthCodeViewTypeText];
CGSize cSize = [@"S" sizeWithFont:[UIFont systemFontOfSize:SizeForTextFont]];
int width = rect.size.width / text.length - cSize.width;
int height = rect.size.height - cSize.height;
CGPoint point;
float pX, pY;
for (int i = 0, count = text.length; i < count; i++) {
pX = arc4random() % width + rect.size.width / text.length * i;
pY = arc4random() % height;
point = CGPointMake(pX, pY);
unichar c = [text characterAtIndex:i];
NSString *textC = [NSString stringWithFormat:@"%C", c];
[textC drawAtPoint:point withFont:[UIFont systemFontOfSize:SizeForTextFont]];
}
// 干扰线
CGContextRef context = UIGraphicsGetCurrentContext();
CGContextSetLineWidth(context, 1.0);
for(int cout = 0; cout < CountForLine; cout++) {
red = arc4random() % 100 / 100.0;
green = arc4random() % 100 / 100.0;
blue = arc4random() % 100 / 100.0;
color = [UIColor colorWithRed:red green:green blue:blue alpha:1.0];
CGContextSetStrokeColorWithColor(context, [color CGColor]);
pX = arc4random() % (int)rect.size.width;
pY = arc4random() % (int)rect.size.height;
CGContextMoveToPoint(context, pX, pY);
pX = arc4random() % (int)rect.size.width;
pY = arc4random() % (int)rect.size.height;
CGContextAddLineToPoint(context, pX, pY);
CGContextStrokePath(context);
}
}
}
/**
* 亲写touchesBegan:withEvent:方法，实现点击重新加载验证码
**/
- (void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event {
if (_type == AuthCodeViewTypeText) {
[self setNeedsDisplay];
} else {
[self _configureImageView:[_dataSource authCodeView:self withType:AuthCodeViewTypeURL]];
}
}
/**
* 根据RUL请求图片Data，转化为图片加到View上
**/
- (void)_configureImageView:(NSString *)p_url {
[_activityView startAnimating];
dispatch_queue_t queue = dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0);
dispatch_async(queue, ^(void) {
ASIFormDataRequest *formDataRequest = [ASIFormDataRequest requestWithURL:[NSURL URLWithString:p_url]];
[formDataRequest startSynchronous];
dispatch_sync(dispatch_get_main_queue(), ^(void){
[_activityView stopAnimating];
UIImage *img = [[UIImage alloc] initWithData:[formDataRequest responseData]];
[_imgView setImage:img];
[img release];
});
});
}
@end