components/PageControl/src/private/MDCPageControlIndicator.h

/*
 Copyright 2015-present the Material Components for iOS authors. All Rights Reserved.

 Licensed under the Apache License, Version 2.0 (the "License");
 you may not use this file except in compliance with the License.
 You may obtain a copy of the License at

 http://www.apache.org/licenses/LICENSE-2.0

 Unless required by applicable law or agreed to in writing, software
 distributed under the License is distributed on an "AS IS" BASIS,
 WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 See the License for the specific language governing permissions and
 limitations under the License.
 */

#import <QuartzCore/QuartzCore.h>
#import <UIKit/UIKit.h>

/**
 This shape layer provides a circular indicator denoting a page in a page control.

 @internal
 */
@interface MDCPageControlIndicator : CAShapeLayer

/** The color of the indicator. */
@property(nonatomic, strong) UIColor *color;

/**
 Default initializer.

 @param center The layer position for this indicator.
 @param radius The radius of this indicator circle.
 */
- (instancetype)initWithCenter:(CGPoint)center radius:(CGFloat)radius NS_DESIGNATED_INITIALIZER;

/** Reveals the indicator by scaling from zero to full size while fading in. */
- (void)revealIndicator;

/**
 Updates the indicator transform.x property along the track by the designated percentage.

 @param transformX The transform.x value.
 */
- (void)updateIndicatorTransformX:(CGFloat)transformX;

/**
 Updates the indicator transform.x property along the track by the designated percentage.

 @param transformX The transform.x value.
 @param animated The whether to animate the change.
 @param duration The duration of the animation.
 @param timingFunction The timing function to use when animating the value.
 */
- (void)updateIndicatorTransformX:(CGFloat)transformX
                         animated:(BOOL)animated
                         duration:(NSTimeInterval)duration
              mediaTimingFunction:(CAMediaTimingFunction *)timingFunction;

@end