iOS DrawRect Code

iOSDrawRectExample

- (void)drawRect:(CGRect)rect {
    //    CGRect bounds = [self bounds];
    CGContextRef ref = UIGraphicsGetCurrentContext();
    CGContextSetLineWidth(ref, 1.0);
    CGColorSpaceRef colorspace = CGColorSpaceCreateDeviceRGB();
    CGFloat components[] = {0.4, 0.4, 0.4, 1.0};
    CGColorRef color = CGColorCreate(colorspace, components);
    CGContextSetStrokeColorWithColor(ref, color);
    CGContextMoveToPoint(ref, 111, 5);
    CGContextAddLineToPoint(ref, 282, 5);
    CGContextMoveToPoint(ref, 111, 2);
    CGContextAddLineToPoint(ref, 111, 8);
    CGContextMoveToPoint(ref, 282, 2);
    CGContextAddLineToPoint(ref, 282, 8);
    if ([self.minValue integerValue] < 0) {
        NSInteger position = 0;
        position += abs([self.minValue integerValue]);
        float percentage = position / [self.spanValue floatValue];
        float pixelsLeft = percentage * (282 - 111);
        CGContextMoveToPoint(ref, pixelsLeft + 111, 2);
        CGContextAddLineToPoint(ref, pixelsLeft + 111, 8);
    }
    CGContextStrokePath(ref);
}