KBorderedGradientView, a custom IBDesignable UIView

KBorderedGradientView.h

//
//  KBorderedGradientView.h
//
//  Created by Kalpesh Talkar on 01/02/16.
//  Copyright © 2016 Kalpesh. All rights reserved.
//

#import <UIKit/UIKit.h>

IB_DESIGNABLE
@interface KBorderedGradientView : UIView

- (void)setCornerRadius:(CGFloat)cornerRadius;
- (void)setBorderWidth:(CGFloat)borderWidth;
- (void)setBorderColor:(UIColor *)borderColor;
- (void)setStartColor:(UIColor *)startColor;
- (void)setEndColor:(UIColor *)endColor;
- (void)setGradientColorWithStartColor:(UIColor *)startColor endColor:(UIColor *)endColor horizontal:(BOOL)horizontal;

@end

KBorderedGradientView.m

//
//  KBorderedGradientView.m
//
//  Created by Kalpesh Talkar on 01/02/16.
//  Copyright © 2016 Kalpesh. All rights reserved.
//

#import "KBorderedGradientView.h"

@interface KBorderedGradientView()

@property (nonatomic) IBInspectable CGFloat cornerRadius;
@property (nonatomic) IBInspectable CGFloat borderWidth;
@property (nonatomic) IBInspectable UIColor *borderColor;
@property (nonatomic) IBInspectable UIColor *startColor;
@property (nonatomic) IBInspectable UIColor *endColor;
@property (nonatomic) IBInspectable BOOL horizontal;

@end

@implementation KBorderedGradientView

#pragma mark - Instance Methods
- (instancetype)initWithCoder:(NSCoder *)aDecoder {
    self = [super initWithCoder:aDecoder];
    if (self) {
        [self renderView];
    }
    return self;
}

- (instancetype)initWithFrame:(CGRect)frame {
    self = [super initWithFrame:frame];
    if (self) {
        [self defaults];
        [self renderView];
    }
    return self;
}

- (void)drawRect:(CGRect)rect {
    [self renderView];
}

- (void)setNeedsLayout {
    [super setNeedsLayout];
    [self setNeedsDisplay];
}

- (void)prepareForInterfaceBuilder {
    [self renderView];
}

#pragma mark - Defaults
- (void)defaults {
    _cornerRadius = 0.0f;
    _borderWidth = 0.0f;
    _borderColor = [UIColor clearColor];
    _startColor = [self backgroundColor];
    _endColor = [self backgroundColor];
}

#pragma mark - Render View
- (void)renderView {
    [self.layer setCornerRadius:_cornerRadius];
    [self.layer setBorderWidth:_borderWidth];
    [self.layer setBorderColor:[_borderColor CGColor]];
    
    if (_cornerRadius > 0) {
        [self.layer setMasksToBounds:true];
    }
    
    [self setGradient];
    [self setNeedsDisplay];
}

#pragma mark - Set Gradient
- (void)setGradient {
    CAGradientLayer *gradient = [CAGradientLayer layer];
    gradient.frame = self.bounds;
    gradient.colors = [NSArray arrayWithObjects:(id)[_startColor CGColor], (id)[_endColor CGColor], nil];
    
    if (_horizontal) {
        gradient.startPoint = CGPointMake(0, 0);
        gradient.endPoint = CGPointMake(1, 0);
    } else {
        gradient.startPoint = CGPointMake(0, 0);
        gradient.endPoint = CGPointMake(0, 1);
    }
    [self.layer insertSublayer:gradient atIndex:0];
}

#pragma mark -
- (void)setCornerRadius:(CGFloat)cornerRadius {
    _cornerRadius = cornerRadius;
    [self renderView];
}

- (void)setBorderWidth:(CGFloat)borderWidth {
    _borderWidth = borderWidth;
    [self renderView];
}

- (void)setBorderColor:(UIColor *)borderColor {
    _borderColor = borderColor;
    [self renderView];
}

- (void)setStartColor:(UIColor *)startColor {
    _startColor = startColor;
    [self renderView];
}

- (void)setEndColor:(UIColor *)endColor {
    _endColor = endColor;
    [self renderView];
}

- (void)setGradientColorWithStartColor:(UIColor *)startColor endColor:(UIColor *)endColor horizontal:(BOOL)horizontal {
    _startColor = startColor;
    _endColor = endColor;
    _horizontal = horizontal;
    [self setGradient];
}

@end