Support to remove disable over-zoom effect

[MHShetty]

Is there any way we could remove the over zoom effect (i.e. disabling the ability to zoom out more than the image dimensions)?

[saket]

Not at the moment. The ZoomSpec#preventOverOrUnderZoom setting might sound like it controls this behavior, but it actually manages the rubber banding effect. I'm considering changing it to an enum to support this.

[RadoslawGorczyca]

This is what I meant in my issue

[MHShetty]

Not at the moment. The ZoomSpec#preventOverOrUnderZoom setting might sound like it controls this behavior, but it actually manages the rubber banding effect.

Ah yes that's right, I tried passing a ZoomSpec to rememberZoomableState with preventOverOrUnderZoom parameter set to true, but that doesn't seem to help with this.

I'm considering changing it to an enum to support this.

Perfect sounds great!

Thanks a lot for developing and maintaining this great and super-helpful library!

[saket]

@MHShetty What's your usecase btw?

[MHShetty]

It's mainly to just have the overzoom and under zoom effect disabled while showing images in the gallery of our camera app. Our previous XML code didn't have the fancy zoom effect so we are trying to have something similar in our new compose code.

[saket]

I just added a new API, OverzoomEffect to make this customizable:

telephoto/zoomable/src/commonMain/kotlin/me/saket/telephoto/zoomable/ZoomSpec.kt

Lines 84 to 98 in 243b0fa

	interface OverzoomEffect {
	companion object {
	/**
	* Applies a rubber banding effect to zoom gestures when content is zoomed beyond
	* its limit as a form of visual feedback that the content can't be zoomed any further.
	*/
	val RubberBanding: OverzoomEffect = RubberBandingOverzoomEffect
	/**
	* Does not limit over/under zooms in any manner. Content will zoom in a free-form
	* manner even when it goes beyond its limit (until the gesture is released).
	*/
	val NoLimits: OverzoomEffect = NoLimitsOverzoomEffect
	}
	}

If anyone's interested in contributing a OverzoomEffect.Disabled, I'd be happy to review the PR!