Y5GradientButton.m

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//
//  Y5GradientButton.m
//  TodaysMenu
//
//  Created by Don Zeek on 12/30/18.
//  Copyright © 2018 net.dzeek.y2015.ios.portfolio. All rights reserved.
//

#import "Y5GradientButton.h"

@implementation Y5GradientButton

id<Y5GradientButtonProtocol>    mGradientButtonDelegate;

- (instancetype) initWithFrame:(CGRect)frame andDelegate:(id<Y5GradientButtonProtocol>)delegate
{
    self = [UIButton buttonWithType:UIButtonTypeRoundedRect];
    if (self) {
        mGradientButtonDelegate = delegate;
        [self setFrame:frame];
        
        [self setTitleEdgeInsets:UIEdgeInsetsMake(2, 2, 2, 2)];
        [self setTitle:@"Hey!" forState:UIControlStateNormal];
        [self setTitleColor:[UIColor blackColor] forState:UIControlStateNormal];
        [self setTitleColor:[UIColor yellowColor] forState:UIControlStateSelected];
        // UIFont *expandedFont = [UIFont fontWithName:@"Verdana-Bold" size:20.0];
        UIFont *expandedFont = [UIFont fontWithName:@"Verdana-Bold" size:18.0];
        [self.titleLabel setFont:expandedFont];
        [self.titleLabel setLineBreakMode:NSLineBreakByWordWrapping];
        [self.titleLabel setTextAlignment:NSTextAlignmentCenter];
        [self.titleLabel setAdjustsFontSizeToFitWidth:YES];
        self.clipsToBounds = YES;
        
        CAGradientLayer *gradientLayer = [self makeGradientLayer:NO];
        [self.layer addSublayer:gradientLayer];
    }
    return self;
}

- (CAGradientLayer *) makeGradientLayer:(Boolean) status
{
    
    CAGradientLayer *gradientLayer = [CAGradientLayer layer];
    CGRect overFlowBounds = self.layer.bounds;
    overFlowBounds.size.height -= 2.0;
    gradientLayer.frame = overFlowBounds;
    
    if (status) {
        gradientLayer.colors = [NSArray arrayWithObjects:
                                (id)[UIColor colorWithWhite:0.4f alpha:0.5f].CGColor,
                                (id)[UIColor colorWithWhite:1.0f alpha:0.1f].CGColor,
                                nil];
    } else {
        gradientLayer.colors = [NSArray arrayWithObjects:
                                (id)[UIColor colorWithWhite:1.0f alpha:0.1f].CGColor,
                                (id)[UIColor colorWithWhite:0.4f alpha:0.5f].CGColor,
                                nil];
    }
    
    gradientLayer.locations = [NSArray arrayWithObjects:
                               [NSNumber numberWithFloat:0.0f],
                               [NSNumber numberWithFloat:1.0f],
                               nil];
    
    gradientLayer.cornerRadius = 6; // refillButton.layer.cornerRadius;
    
    return gradientLayer;
}

/*
// Only override drawRect: if you perform custom drawing.
// An empty implementation adversely affects performance during animation.
- (void)drawRect:(CGRect)rect {
    // Drawing code
}
*/

@end