larssondaniel

- (void)panningEndedWithTranslation:(CGPoint)translation velocity:(CGPoint)velocity
{
    self.panGestureRecognizer.enabled = NO;

    CGFloat screenHeight = [[UIScreen mainScreen] bounds].size.height;
    __weak ViewController *weakSelf = self;

    switch (self.playerState) {
        case PlayerStateThumbnail:
            if (translation.y <= -screenHeight / 3 || velocity.y <= -100)

larssondaniel

- (void)panningChangedWithTranslation:(CGPoint)translation
{
    if (self.playerViewAnimator.isRunning)
    {
        return;
    }

    CGFloat translatedY = self.view.center.y + translation.y;

    CGFloat progress;

larssondaniel

typedef NS_ENUM(NSInteger, PlayerState) {
    PlayerStateThumbnail,
    PlayerStateFullscreen,
};

@interface ViewController ()

@property (weak, nonatomic) IBOutlet UIView *playerView;
@property (nonatomic) UIViewPropertyAnimator *playerViewAnimator;
@property (nonatomic) PlayerState playerState;

larssondaniel

- (void)panningBegan
{
    if (self.playerViewAnimator.isRunning)
    {
        return;
    }

    CGRect targetFrame;

    switch (self.playerState) {

larssondaniel

- (void)handlePan:(UIPanGestureRecognizer *)recognizer
{
    CGPoint translation = [recognizer translationInView:self.view.superview];

    if (recognizer.state == UIGestureRecognizerStateBegan)
    {
        [self panningBegan];
    }
    if (recognizer.state == UIGestureRecognizerStateEnded)
    {

larssondaniel

- (void)viewDidLoad
{
    [super viewDidLoad];

    self.panGestureRecognizer = [[UIPanGestureRecognizer alloc] initWithTarget:self action:@selector(handlePan:)];
    [self.view addGestureRecognizer:self.panGestureRecognizer];
}