A simple 'flipbook' of images that can be presented as flipbook-style animation.
DSFImageFlipbook presents each image in the flipbook to the owner of the flipbook (using a block callback or combine publisher) for the duration of the image frame.
Supports :-
- loading images from a gif, a movie or manually frame-by-frame.
- repeat count
- speed
- scrubbing
- cancellation
I wanted to put an animated gif in a dock tile. Due to the nature of NSDockTile you cannot just play an NSImageView as the contentView of the tile - the only time a dock tile updates is when you tell it to (via display())
So I needed a class that could present me individual images at a defined time so that I could manually update the dock image.
let flipbook = DSFImageFlipbook()
...
// Add frames manually
flipbook.addFrame(image: image1, duration: 0.5) // first frame for 0.5 seconds
flipbook.addFrame(image: image2, duration: 0.5) // second frame for 0.5 seconds
flipbook.addFrame(image: image3, duration: 0.5) // third frame for 0.5 seconds
flipbook.addFrame(image: image4, duration: 2.0) // last frame for 2.0 seconds
// And start the animation
flipbook.start() { [weak self] (frame, current, count, stop) in
// Do something with the provided frame
}let flipbook = DSFImageFlipbook()
// Load the frames from a gif
let gif = Bundle.main.image(forResource: NSImage.Name("animation.gif"))!
_ = flipbook.loadFrames(from: gif)
...
// Use a combine sink to listen to frame changes in localFlipbook
cancellable = flipbook.publisher
.map { return $0.image }
.sink(receiveValue: { [weak self] image in
... do something with 'image'
})
// Start the animation at 2x the speed defined in the flipbook. Repeat 10 times.
flipbook.start(speed: 2, repeatCount: 10)MIT. Use it and abuse it for anything you want, just attribute my work. Let me know if you do use it somewhere, I'd love to hear about it!
MIT License
Copyright (c) 2021 Darren Ford
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