gistfile1.m

//
//  iCarouselExampleViewController.m
//  iCarouselExample
//
//  Created by Nick Lockwood on 03/04/2011.
//  Copyright 2011 Charcoal Design. All rights reserved.
//

#import "iCarouselExampleViewController.h"
#import "TableViewController.h"
#import "SampleViewController.h"

@interface iCarouselExampleViewController ()

@property (nonatomic, strong) NSMutableArray *items1;
@property (nonatomic, strong) NSMutableArray *items2;
@property (nonatomic, strong) TableViewController *tableViewSample;
@property (nonatomic, strong) SampleViewController *sampleVc;
@property (nonatomic, strong) UIView *pageContainerView;
@end


@implementation iCarouselExampleViewController

@synthesize carousel1;
@synthesize carousel2;
@synthesize items1;
@synthesize items2;

- (void)awakeFromNib
{
    _tableViewSample = [[TableViewController alloc] initWithStyle:UITableViewStyleGrouped];
    _sampleVc = [[SampleViewController alloc] init];
    
    //set up data sources
    self.items1 = [NSMutableArray array];
    for (int i = 0; i < 20; i++)
    {
        [items1 addObject:[NSNumber numberWithInt:i]];
    }
    
    self.items2 = [NSMutableArray array];
    for (int i = 0; i < 20; i++)
    {
        [items2 addObject:[NSString stringWithFormat:@"cat %d", i]];
    }
}

- (void)dealloc
{
    //it's a good idea to set these to nil here to avoid
    //sending messages to a deallocated viewcontroller
    carousel1.delegate = nil;
    carousel1.dataSource = nil;
    carousel2.delegate = nil;
    carousel2.dataSource = nil;
    
}

#pragma mark -
#pragma mark View lifecycle

- (void)viewDidLoad
{
    [super viewDidLoad];
    
    //configure carousel
    carousel1.type = iCarouselTypeLinear;
    carousel1.currentItemIndex = 5;
    carousel1.scrollToItemBoundary = YES;
    carousel1.scrollSpeed = 0.50;
    carousel1.decelerationRate = 0.90;
    
    carousel2 = [[iCarousel alloc] initWithFrame:CGRectMake(0.0f, 320.0f, 320.0f, 210.0f)];
    carousel2.delegate = self;
    carousel2.dataSource = self;
    carousel2.type = iCarouselTypeLinear;
    carousel2.decelerationRate = 1.90;
    carousel2.scrollToItemBoundary = YES;
    carousel2.centerItemWhenSelected = YES;
    carousel2.currentItemIndex = 5;
    
    _pageContainerView = [[UIView alloc] initWithFrame:CGRectMake(0, 320.0f, 320.0f, 210.0f)];
    
//    _pageContainerView.backgroundColor = [UIColor redColor];
    _pageContainerView.autoresizingMask = UIViewAutoresizingFlexibleWidth | UIViewAutoresizingFlexibleHeight;
    _pageContainerView.clipsToBounds  = YES;
    [self.view addSubview:_pageContainerView];
    [self.view addSubview:carousel2];
    [_pageContainerView setNeedsDisplay];
    
}

- (void)viewDidUnload
{
    [super viewDidUnload];
    
    //free up memory by releasing subviews
    self.carousel1 = nil;
    self.carousel2 = nil;
}

#pragma mark -
#pragma mark iCarousel methods

- (NSInteger)numberOfItemsInCarousel:(iCarousel *)carousel
{
    //return the total number of items in the carousel
    if (carousel == carousel1)
    {
        return [items1 count];
    }
    else
    {
        return [items2 count];
    }
}

- (UIView *)carousel:(iCarousel *)carousel viewForItemAtIndex:(NSInteger)index reusingView:(UIView *)view
{
    UILabel *label = nil;
    
    //create new view if no view is available for recycling
    if (view == nil)
    {
        view = [[UIImageView alloc] initWithFrame:CGRectMake(0, 0, 200.0f, 200.0f)];
        ((UIImageView *)view).image = [UIImage imageNamed:@"page.png"];
        view.contentMode = UIViewContentModeCenter;
        label = [[UILabel alloc] initWithFrame:view.bounds];
        label.backgroundColor = [UIColor clearColor];
        label.textAlignment = UITextAlignmentCenter;
        label.font = [label.font fontWithSize:50];
        
        [_sampleVc viewWillAppear:YES];
        [self addChildViewController:_sampleVc];
        [view addSubview:_sampleVc.view];
        [_sampleVc didMoveToParentViewController:self];
        [_sampleVc viewDidAppear:YES];
        
        [view addSubview:label];
    }
    else
    {
        label = [[view subviews] lastObject];
    }
    
    //set item label
    //remember to always set any properties of your carousel item
    //views outside of the `if (view == nil) {...}` check otherwise
    //you'll get weird issues with carousel item content appearing
    //in the wrong place in the carousel
    if (carousel == carousel1)
    {
        //items in this array are numbers
        label.text = [[items1 objectAtIndex:index] stringValue];
    }
    else
    {
        //items in this array are strings
        label.text = [items2 objectAtIndex:index];
    }
    
    return view;
}

- (CGFloat)carousel:(iCarousel *)carousel valueForOption:(iCarouselOption)option withDefault:(CGFloat)value
{
    //customize carousel display
    switch (option)
    {
        case iCarouselOptionSpacing:
        {
            if ((carousel == carousel2) || (carousel == carousel1))
            {
                //add a bit of spacing between the item views
                return value * 1.10f;
            }
        }
        case iCarouselOptionWrap:
        {
            return YES;
        }
        default:
        {
            return value;
        }
    }
}


- (void)carouselCurrentItemIndexDidChange:(iCarousel *)carousel {
    
    [carousel1 scrollToItemAtIndex:carousel.currentItemIndex animated:YES];
    
//    NSLog(@"carousel current item index did change. %zd",carousel.currentItemIndex);
}

@end