[FEATURE] Two fingers tap to zoom out

[russellmiddleton]

What do you want implemented?

Is it possible to zoom out by two fingers tap like Google Maps or Apple Maps?

What other alternatives are available?

No response

Can you provide any other information?

No response

Platforms Affected

Android, iOS

Severity

Minimum: Not required for my use

Requirements

• I agree to follow this project's Code of Conduct
• I am using the latest stable version of this package
• I have checked for similar feature requests which may be duplicates

[Spyy004]

Is somone working on this? If not, I would like to work on this feature.

[JaffaKetchup]

Hi @Spyy004,
I don't believe anyone is working on this specifically, although it may conflict with @josxha's work on gestures, so I'll let him confirm.

[Spyy004]

Okay!

[josxha]

Hi @Spyy004, I'm the person who is working on the gesture system rewrite over in #1715. You can start working on the feature right now if you like. I'm going to merge your changes afterwards into the rewrite.

[Spyy004]

Cool thanks!

[Spyy004]

So I am a bit confused on how to move ahead. I know what I have to do but I want to know the right way to do it. If I want to detect two finger taps, I would need to know the pointerCount details which is provided by ScaleStartDetails.
Currently when I tap with two fingers, the onTap triggers but there is no way to figure out number of pointers touching the screen because TapPosition class doesn't give me that detail. So should I modify the Tap position class and handle the two finger tap in the ontap method itself or should I create new methods in position_tap_detector_2 and handle the two finger tap. A little guidance would be helpful!

[josxha]

In that case it's probably better for you to wait until the rewrite is finished. It's probably more straight forward to implement it afterwards.