153 lines
4.1 KiB
Objective-C
153 lines
4.1 KiB
Objective-C
//
|
|
// GradientButton.m
|
|
// Pods
|
|
//
|
|
// Created by Giuseppe Nucifora on 11/01/16.
|
|
//
|
|
//
|
|
|
|
#import "GradientButton.h"
|
|
|
|
@interface GradientButton()
|
|
|
|
@property (nonatomic, strong) CAGradientLayer *gradientLayer;
|
|
@property (nonatomic, strong) NSMutableArray *colors;
|
|
@property (nonatomic, strong) NSMutableArray *cgColors;
|
|
@property (nonatomic) CGPoint startPoint;
|
|
@property (nonatomic) BOOL didUpdateConstraints;
|
|
|
|
@end
|
|
|
|
@implementation GradientButton
|
|
|
|
|
|
- (instancetype) init {
|
|
self = [super init];
|
|
if (self) {
|
|
[self addObserver:self forKeyPath:@"bounds" options:0 context:nil];
|
|
_colors = [[NSMutableArray alloc] init];
|
|
_cgColors = [[NSMutableArray alloc] init];
|
|
}
|
|
return self;
|
|
}
|
|
|
|
- (instancetype) initWithCoder:(NSCoder *)aDecoder {
|
|
self = [super initWithCoder:aDecoder];
|
|
if (self) {
|
|
[self addObserver:self forKeyPath:@"bounds" options:0 context:nil];
|
|
_colors = [[NSMutableArray alloc] init];
|
|
_cgColors = [[NSMutableArray alloc] init];
|
|
}
|
|
return self;
|
|
}
|
|
|
|
- (instancetype) initWithFrame:(CGRect)frame {
|
|
self = [super initWithFrame:frame];
|
|
if (self) {
|
|
[self addObserver:self forKeyPath:@"bounds" options:0 context:nil];
|
|
_colors = [[NSMutableArray alloc] init];
|
|
_cgColors = [[NSMutableArray alloc] init];
|
|
}
|
|
return self;
|
|
}
|
|
|
|
/*
|
|
// Only override drawRect: if you perform custom drawing.
|
|
// An empty implementation adversely affects performance during animation.
|
|
- (void)drawRect:(CGRect)rect {
|
|
// Drawing code
|
|
}
|
|
|
|
UIColor *topColor = [@"fd843e" colorFromHex];
|
|
UIColor *bottomColor = [@"ff4e50" colorFromHex];
|
|
|
|
CAGradientLayer *checkoutButtonViewGradient = [CAGradientLayer layer];
|
|
checkoutButtonViewGradient.colors = [NSArray arrayWithObjects: (id)topColor.CGColor, (id)bottomColor.CGColor, nil];
|
|
checkoutButtonViewGradient.frame = _checkoutButton.bounds;
|
|
checkoutButtonViewGradient.startPoint = CGPointMake(0, 0);
|
|
|
|
[_checkoutButton.layer insertSublayer:checkoutButtonViewGradient atIndex:0];
|
|
*/
|
|
|
|
|
|
|
|
|
|
|
|
- (void) setbackgroundLayerWithColors:(NSArray *) colors startPoint:(CGPoint) startPoint {
|
|
if (colors && [colors count] > 0) {
|
|
_colors = [[NSMutableArray alloc] initWithArray:colors];
|
|
[_cgColors removeAllObjects];
|
|
|
|
for (UIColor *color in colors) {
|
|
[_cgColors addObject:(id)color.CGColor];
|
|
}
|
|
|
|
_startPoint = startPoint;
|
|
|
|
//[_gradientLayer removeFromSuperlayer];
|
|
if (!_gradientLayer) {
|
|
_gradientLayer = [CAGradientLayer layer];
|
|
}
|
|
|
|
_gradientLayer.colors = _cgColors;
|
|
if (self.translatesAutoresizingMaskIntoConstraints) {
|
|
|
|
[_gradientLayer setFrame:CGRectMake(0, 0, self.frame.size.width, self.frame.size.height)];
|
|
}
|
|
else {
|
|
|
|
[_gradientLayer setFrame:self.bounds];
|
|
}
|
|
|
|
|
|
_gradientLayer.startPoint = _startPoint;
|
|
|
|
if (!CGRectEqualToRect(_gradientLayer.frame, CGRectZero)) {
|
|
[self.layer insertSublayer:_gradientLayer atIndex:0];
|
|
}
|
|
|
|
}
|
|
else {
|
|
[_gradientLayer removeFromSuperlayer];
|
|
}
|
|
}
|
|
|
|
- (void) setFrame:(CGRect)frame {
|
|
[super setFrame:frame];
|
|
dispatch_async(dispatch_get_main_queue(), ^{
|
|
if (_gradientLayer) {
|
|
[self setbackgroundLayerWithColors:_colors startPoint:_startPoint];
|
|
}
|
|
});
|
|
}
|
|
|
|
- (void) setBounds:(CGRect)bounds {
|
|
[super setBounds:bounds];
|
|
dispatch_async(dispatch_get_main_queue(), ^{
|
|
if (_gradientLayer) {
|
|
[self setbackgroundLayerWithColors:_colors startPoint:_startPoint];
|
|
}
|
|
});
|
|
}
|
|
|
|
|
|
- (void)observeValueForKeyPath:(NSString *)keyPath ofObject:(id)object change:(NSDictionary *)change context:(void *)context
|
|
{
|
|
if (object == self && [keyPath isEqualToString:@"bounds"]) {
|
|
if(_gradientLayer) {
|
|
dispatch_async(dispatch_get_main_queue(), ^{
|
|
[self setbackgroundLayerWithColors:_colors startPoint:_startPoint];
|
|
});
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
- (void) dealloc {
|
|
|
|
[self removeObserver:self forKeyPath:@"bounds"];
|
|
}
|
|
|
|
|
|
@end
|