[Bug] Adding multiple card sizes doesn't snap card correctly

[ankit01217]

Bug Description

Card Swiper doesn't snap card swipe correctly when we provide different sizes for cards using

func sizeForItem(verticalCardSwiperView: VerticalCardSwiperView, index: Int)

To Reproduce

Steps to reproduce the behavior: Following steps are for ExampleViewController in project

1. Update contactsDataSource to add size for each item
   e.g.

private var contactsDemoData: [Contact] = [
        Contact(name: "John Doe", age: 33, size: 500),
        Contact(name: "Chuck Norris", age: 78, size: 500),
        Contact(name: "Bill Gates", age: 62, size: 500),
        Contact(name: "Steve Jobs", age: 56, size: 300),
        Contact(name: "Barack Obama", age: 56, size: 300),
        Contact(name: "Mila Kunis", age: 34, size: 300),
        Contact(name: "Pamela Anderson", age: 50, size: 300),
        Contact(name: "Christina Anguilera", age: 37, size: 300),
        Contact(name: "Ed Sheeran", age: 23, size: 300),
        Contact(name: "Jennifer Lopez", age: 45, size: 300),
        Contact(name: "Nicki Minaj", age: 31, size: 300),
        Contact(name: "Tim Cook", age: 57, size: 300),
        Contact(name: "Satya Nadella", age: 50, size: 300)
    ]

2. Add custom size for cells using delegate method

func sizeForItem(verticalCardSwiperView: VerticalCardSwiperView, index: Int) -> CGSize {
        let contact = contactsDemoData[index]
        return CGSize(width: self.view.bounds.size.width, height: CGFloat(contact.size))
}

3. Run project and notice, it takes size as expected, but swipe offset doesn't update based on cell size and snaps to wrong position on swipe up

Expected behavior

• Swipe offset should consider dynamic cell size and update position accordingly

Video

https://jmp.sh/KbBOXeR

Environment

iOS 13.6 - iPhone 11

[ankit01217]

[elfanek]

@JoniVR any ideas on how to add support for cells with multiple heights?

[JoniVR]

It's not currently supported as I didn't consider it, feel free to open a Pull request though :)