UIButton+Y5GradientFace.m

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//
//  UIButton+Y5GradientFace.m
//  TodaysMenu
//
//  Created by Don Zeek on 12/31/18.
//  Copyright © 2018 net.dzeek.y2015.ios.portfolio. All rights reserved.
//

#import "UIButton+Y5GradientFace.h"

@implementation UIButton (Y5GradientFace)

- (void) addGradientFace
{
    [self addGradientFace:[UIColor orangeColor]];
}
- (void) addGradientImageMask
{
    [self addGradientFace];
    
//    CAGradientLayer *gradientLayer = [self makeMaskLayer];
//    self.layer.mask = gradientLayer;

}
- (void) addGradientFace:(UIColor *)accentColor
{
    [self.layer setBorderColor: [[UIColor blackColor] CGColor]];
    [self.layer setBorderWidth: 2.0];
    self.layer.cornerRadius = 8.0f;
    self.layer.masksToBounds = YES;

    [self setTitleEdgeInsets:UIEdgeInsetsMake(2, 2, 2, 2)];
    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 colorBand:accentColor];
    [gradientLayer setOpaque:YES];  // made no diff, still xparnt
    CAGradientLayer *maskLayer = [self makeMaskLayer];
    gradientLayer.mask = maskLayer;

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

//- (CALayer *) makeImageRootLayer
//{
//    CALayer *retLayer = [CALayer layer];
//    retLayer.contents =
//}
- (CAGradientLayer *) makeMaskLayer
{
    CAGradientLayer *gradientLayer = [CAGradientLayer layer];
    gradientLayer.frame = self.layer.bounds;
    
    gradientLayer.colors = [NSArray arrayWithObjects:
                            (id)[UIColor blackColor].CGColor,
                            (id)[UIColor clearColor].CGColor,
                            (id)[UIColor blackColor].CGColor,
                            nil];
    gradientLayer.locations = [NSArray arrayWithObjects:
                               [NSNumber numberWithFloat:0.0f],
                               [NSNumber numberWithFloat:0.5f],
                               [NSNumber numberWithFloat:1.0f],
                               nil];
    
    return gradientLayer;
}
- (void) setMaskView:(UIView *)maskView
{
    NSLog(@"UIButton+Y5GradientFace.setMaskView");
}
- (void) addMask
{
    self.layer.borderWidth = 2;
    self.layer.borderColor = UIColor.cyanColor.CGColor;
    self.layer.contents = (__bridge id _Nullable)([UIImage imageNamed:@"pomegraniteSeeds500.png"].CGImage);
    // self.layer.mask = (__bridge id _Nullable)([UIImage imageNamed:@"mail19.png"].CGImage);
    // CALayer *mskLayer = [self makeMaskLayer];
    // CAShapeLayer *shapeLayer = [[CAShapeLayer alloc] initWithLayer:mskLayer];
    // self.layer.mask = shapeLayer;
    self.layer.contentsGravity = kCAGravityCenter;
 }
@end