/*

 File: APLTitleView.m

 Abstract: The title view of the sample map.

 Version: 1.0

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 MAKES NO WARRANTIES, EXPRESS OR IMPLIED, INCLUDING WITHOUT LIMITATION

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 */

#import "APLTitleView.h"

#import "APLCommon.h"

@interface APLTitleView ()

@property (weak, nonatomic) IBOutlet UILabel *titleLabel;

@end

@implementation APLTitleView

#pragma mark - UIView overrides

// Custom drawing method to draw the indicators

//

- (void)drawRect:(CGRect)rect

{

    for ( NSInteger i = kMinimumFloor; i <= kMaximumFloor; ++i )

    {

        BOOL indicatorHighlighted = [self indicatorHighlightedForFloor:i];

        CGRect indicatorRect = [self indicatorRectForFloor:i];

        NSString *indicatorString = [NSString stringWithFormat:@"%ld", (long)i];

        // Draw indicator

        NSAttributedString *indicatorAttributedString = [[NSAttributedString alloc] initWithString:indicatorString attributes:@{ NSFontAttributeName : [UIFont boldSystemFontOfSize:kFontSize], NSForegroundColorAttributeName : ( indicatorHighlighted ) ? [UIColor blackColor] : [UIColor lightGrayColor] }];

        UIBezierPath *indicatorBezierPath = [UIBezierPath bezierPathWithOvalInRect:indicatorRect];

        indicatorBezierPath.lineWidth = kLineWidth;

        [[UIColor whiteColor] setFill];

        [indicatorBezierPath fill];

        [( indicatorHighlighted ) ? [UIColor blackColor] : [UIColor lightGrayColor] setStroke];

        [indicatorBezierPath stroke];

        [indicatorAttributedString drawAtPoint:CGPointMake(CGRectGetMidX(indicatorRect) - indicatorAttributedString.size.width * 0.5, CGRectGetMidY(indicatorRect) - indicatorAttributedString.size.height * 0.5)];

    }

}

#pragma mark - UIAccessibilityElement

// Override to supply the accessibility attirbute value programmatically.

// The is the way to supply dynamic value for accessibility attribute.

// For static attribute value, we can also set up within Xcode (Interface Builder).

- (BOOL)isAccessibilityElement

{

    return YES;

}

- (NSString *)accessibilityLabel

{

    return self.titleLabel.text;

}

// Supply the accessibility value based on the floor

//

- (NSString *)accessibilityValue

{

    // Return a formatted number string

    NSNumberFormatter *numberFormatter = [[NSNumberFormatter alloc] init];

    [numberFormatter setNumberStyle:NSNumberFormatterDecimalStyle];

    return [numberFormatter stringFromNumber:[NSNumber numberWithInteger:self.floor]];

}

#pragma mark - Helpers

// Return indicator hightlighted status for specified floor

//

- (BOOL)indicatorHighlightedForFloor:(NSInteger)floor

{

    return floor == self.floor;

}

// Return indicator rectangle for specified floor

//

- (CGRect)indicatorRectForFloor:(NSInteger)floor

{

    CGRect bounds = self.bounds;

    CGFloat indicatorWidth = CGRectGetHeight(bounds) - kPadding * 2.0;

    switch ( floor )

    {

        case 1:

            return CGRectMake(CGRectGetMidX(bounds) + CGRectGetWidth(bounds) * 0.25 - indicatorWidth * 1.5 - kPadding * 2.0, kPadding, indicatorWidth, indicatorWidth);

        case 2:

            return CGRectMake(CGRectGetMidX(bounds) + CGRectGetWidth(bounds) * 0.25 - indicatorWidth * 0.5, kPadding, indicatorWidth, indicatorWidth);

        case 3:

            return CGRectMake(CGRectGetMidX(bounds) + CGRectGetWidth(bounds) * 0.25 + indicatorWidth * 0.5 + kPadding * 2.0, kPadding, indicatorWidth, indicatorWidth);

        default:

            // Unsupported floor

            return CGRectZero;

    }

}

#pragma mark - Properties

// floop properrt setter, make sure the floor values is between [kMinimumFloor, kMaximumFloor]

//

- (void)setFloor:(NSInteger)floor

{

    // Clamp floor between [kMinimumFloor, kMaximumFloor]

    _floor = MAX(MIN(floor, kMaximumFloor), kMinimumFloor);

    [self setNeedsDisplay];

}

@end