/*

 Copyright (C) 2014 Apple Inc. All Rights Reserved.

 See LICENSE.txt for this sample’s licensing information

 */

#import "AAPLImageFilter.h"

@implementation AAPLImageFilter

- (instancetype)initFilter:(BOOL)useDefaultState {

    self = [super init];

    if (self != nil && useDefaultState) {

        self.active = YES;

    }

    return self;

}

#pragma mark - UIStateRestoration

#define kImageFilterActiveKey @"kImageFilterActiveKey"

- (void)encodeRestorableStateWithCoder:(NSCoder *)coder {

    [coder encodeFloat:self.active forKey:kImageFilterActiveKey];

}

- (void)decodeRestorableStateWithCoder:(NSCoder *)coder {

    if ([coder containsValueForKey:kImageFilterActiveKey]) {

        self.active = [coder decodeFloatForKey:kImageFilterActiveKey];

    }

}

@end

#pragma mark - BlurFilter

@implementation BlurFilter

- (instancetype)initFilter:(BOOL)useDefaultState {

    self = [super initFilter:useDefaultState];

    if (self && useDefaultState) {

        self.blurRadius = 0.0;  // start off with no blur

    }

    return self;

}

#pragma mark - UIStateRestoration

#define kImageFilterBlurRadiusKey @"kImageFilterBlurRadiusKey"

- (void)encodeRestorableStateWithCoder:(NSCoder *)coder {

    [super encodeRestorableStateWithCoder:coder];

    [coder encodeFloat:self.blurRadius forKey:kImageFilterBlurRadiusKey];

}

- (void)decodeRestorableStateWithCoder:(NSCoder *)coder {

    [super decodeRestorableStateWithCoder:coder];

    if ([coder containsValueForKey:kImageFilterBlurRadiusKey]) {

        self.blurRadius = [coder decodeFloatForKey:kImageFilterBlurRadiusKey];

    }

}

@end

#pragma mark - ModifyFilter

@implementation ModifyFilter

- (instancetype)initFilter:(BOOL)useDefaultState {

    self = [super initFilter:useDefaultState];

    if (self && useDefaultState) {

        self.intensity = 0.0;   // start off with no sepia intensity

    }

    return self;

}

#pragma mark - UIStateRestoration

#define kImageFilterIntensityKey @"kImageFilterIntensityKey"

- (void)encodeRestorableStateWithCoder:(NSCoder *)coder {

    [super encodeRestorableStateWithCoder:coder];

    [coder encodeFloat:self.intensity forKey:kImageFilterIntensityKey];

}

- (void)decodeRestorableStateWithCoder:(NSCoder *)coder {

    [super decodeRestorableStateWithCoder:coder];

    if ([coder containsValueForKey:kImageFilterIntensityKey]) {

        self.intensity = [coder decodeFloatForKey:kImageFilterIntensityKey];

    }

}

@end