U5MealPanoramaView.m

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//
//  U5MealPanoramaView.m
//  TodaysMenu
//
//  Created by Don Zeek on 1/1/19.
//  Copyright © 2019 net.dzeek.y2015.ios.portfolio. All rights reserved.
//

#import "U5MealPanoramaView.h"
#import "Z5DataController.h"
#import "U5MealCollectionViewCell.h"

@implementation U5MealPanoramaView

id<Z6MealPanoramaDelegate> mealPanoramaDelegate;
UICollectionView *mealCollectionView;

UICollectionViewFlowLayout *mealFlowLayout = nil;

CGSize mealDefaultCellSize;
CGSize mealSelectCellSize;
float initialCollectViewHgt;
NSInteger selectedMealRow;
UIColor *mealBackgroundShade;
static NSString *cellIdentifier = @"y5Cell";
static NSString *selectedCellIdentifier = @"y5SelectedCell";
NSDateFormatter *mDateFormatter;

+ (NSValue *) mealCellDefaultSize
{
    NSValue *ret = [NSValue valueWithCGSize:mealDefaultCellSize];
    return ret;
}

- (instancetype) initWithFrame:(CGRect)frame andDelegate:(id<Z6MealPanoramaDelegate>)dele
{
    self = [super initWithFrame:frame];
    mealPanoramaDelegate = dele;
    mealBackgroundShade = [UIColor colorWithRed:226.0/256 green:201.0/256 blue:114.0/256 alpha:1.0];
    selectedMealRow = 1001;
    [self initialize];
    return self;
}


- (void) initialize
{
    // start definition of collection view layout - class var, used many places
    float defaultCellwidth = 224;
    float defaultCellheight = 268;
    mealDefaultCellSize = CGSizeMake(defaultCellwidth, defaultCellheight);
    float selectCellWidth = 156;
    float selectCellHeight = 180;
    mealSelectCellSize = CGSizeMake(selectCellWidth, selectCellHeight);
    // end, for now - start definition of collection view layout
    
    mealFlowLayout = [[UICollectionViewFlowLayout alloc] init];
    [mealFlowLayout setScrollDirection:UICollectionViewScrollDirectionHorizontal];
    [mealFlowLayout setMinimumInteritemSpacing:1.0];
    [mealFlowLayout setItemSize:mealDefaultCellSize];
    
    initialCollectViewHgt = defaultCellheight + 6;
    CGRect collectionViewFrame = CGRectMake(4.0, 4.0, self.bounds.size.width-8, initialCollectViewHgt);
    mealCollectionView = [[UICollectionView alloc] initWithFrame:collectionViewFrame collectionViewLayout:mealFlowLayout];
    [self addSubview:mealCollectionView];
    [self registerCells];
    [mealCollectionView setDelegate:self];
    [mealCollectionView setDataSource:self];
    // [collectionView setBackgroundColor:[UIColor lightGrayColor]];
    [mealCollectionView setBackgroundColor:[[Z5DataController alloc] wheatColor]];
    
    mDateFormatter = [[NSDateFormatter alloc] init];
    [mDateFormatter setDateStyle:NSDateFormatterMediumStyle];
    [mDateFormatter setTimeStyle:NSDateFormatterShortStyle];
}

- (void) reloadMeals
{
    [mealCollectionView reloadData];
}

- (void) registerCells
{
// setup how cells are built
[mealCollectionView registerClass:[U5MealCollectionViewCell class] forCellWithReuseIdentifier:cellIdentifier];
[mealCollectionView registerClass:[U5MealCollectionViewCell class] forCellWithReuseIdentifier:selectedCellIdentifier];
mealCollectionView.delegate = self;
// end - setup how cells are built
}

#pragma mark - Z6ContainedView

- (float) heightRequirement
{
    float ret = initialCollectViewHgt;
    return ret;
}
- (void) appear:(CGRect)bound
{
    NSNumber *galleryChoice = [NSNumber numberWithInt:1];
    Z5LocalDataController *localData = [[Z5DataController sharedInstance] localDataController];
    // NSArray *tmp = [localData retrieveAllMenuItems:galleryChoice];
    NSArray *tmp = [localData retrieveAllMeals:galleryChoice];
    NSLog(@"U5MenuPanoramaView.appear: width: %3.2f  self-width: %3.2f", bound.size.width, self.bounds.size.width);
    [self setSnapMeals:[[NSMutableArray alloc] initWithArray:tmp]];
    
//    CGRect collectionViewFrame = CGRectMake(10, 36, self.bounds.size.width-20, mealDefaultCellSize.height+12.0);
//    [mealCollectionView setFrame:collectionViewFrame];
    [mealCollectionView setBackgroundColor:[UIColor yellowColor]];
    [mealCollectionView reloadData];
//    if (0 <= selectedRow) {
//        [self centerGalleryItem:selectedRow];
//    }
}

#pragma mark - UICollectionViewDataSource
- (NSInteger)collectionView:(UICollectionView *)collectionView
     numberOfItemsInSection:(NSInteger)section
{
    NSInteger ret = [_snapMeals count];
    NSLog(@"U5MealPanoramaView.numberOfItemsInSection: %ld", (long)ret);
    return ret;
}
- (__kindof UICollectionViewCell *)collectionView:(UICollectionView *)collectionView
                           cellForItemAtIndexPath:(NSIndexPath *)indexPath
{
    int imageHeight = 120;  //
    int selectedImageHeight = 160;
    int outputImageHeight = 0;
    
    U5MealCollectionViewCell *cell;
    if (selectedMealRow == indexPath.row) {
        cell = (U5MealCollectionViewCell *)[collectionView dequeueReusableCellWithReuseIdentifier:selectedCellIdentifier forIndexPath:indexPath];
        outputImageHeight = selectedImageHeight;
    } else {
        cell = (U5MealCollectionViewCell *)[collectionView dequeueReusableCellWithReuseIdentifier:cellIdentifier forIndexPath:indexPath];
        outputImageHeight = imageHeight;
    }
    // NSLog(@"U5MealPanoramaView.cellForItemAtIndexPath: cell: %@", cell);
    
    Meal *cellItem = [_snapMeals objectAtIndex:indexPath.row];
    UIImage *photoImage = [UIImage imageWithData:cellItem.photo];
    NSDate *photoDate = [cellItem consumeDate];
    NSString *itemName = [mDateFormatter stringFromDate:photoDate];
    // NSString *itemName = @"Meal";       // [cellItem name];
    
    CGSize photoSize = [photoImage size];
    float resizeRatio = photoSize.height / (float)outputImageHeight;
    UIImage *keptImage = [UIImage imageWithCGImage:[photoImage CGImage]
                                             scale:photoImage.scale * resizeRatio
                                       orientation:(photoImage.imageOrientation) ];
    
    [cell.imageView setImage:keptImage];
    [Z5DataController labelize:cell.textLabel withText:itemName];

    return cell;
}
/*
// Only override drawRect: if you perform custom drawing.
// An empty implementation adversely affects performance during animation.
- (void)drawRect:(CGRect)rect {
    // Drawing code
}
*/

@end