UIPanGesture blocked while zoomed out completely

[Scrambles56]

Hi Daniel,

First up, I want to thank you for this library, as it has proved most useful with my current works. In my time using this library, I have come across a problem that I wanted to clear up, and find out whether it is intentional, or possible to change.

I have set up a Linechart view, with reasonably default settings. The problem is that I want to add a UIPanGestureRecognizer to the LineChartView, but the action associated to the gesture is not fired when the chart is zoomed all the way out.

Thanks,
Matt

[liuxuan30]

The chart view itself contains two tap gestures and one pinch, one pan gesture. I guess you need to provide your own handler, rather than adding a new one. Or you need to solve the conflicts of the two pan gestures, like one should fail the other one.

here's the code in ChartViewBase:

    internal var _tapGestureRecognizer: UITapGestureRecognizer!
    internal var _doubleTapGestureRecognizer: UITapGestureRecognizer!
    #if !os(tvOS)
    internal var _pinchGestureRecognizer: UIPinchGestureRecognizer!
    #endif
    internal var _panGestureRecognizer: UIPanGestureRecognizer!

[danielgindi]

Well the thing is that when the pan gesture can interfere with scroll views, so we kind of "disable" it when there's nothing to pan.

I think you can still make this work - try to not specify the chart as the delegate for your new pan recognizer.