Android Question Listen to pinch actions

[hookshy]

One of the problems Easy CAD dimentions has is that I loose all points database when user try to zoom.
As zoom is not posible once user try to pinch the panel on release I have problems repositioning all points database.

This is main bug that I have and make this unreliable until I will figure out how to do it best.

I need to figure out when to move the parent and when to lock it in place .
I would try to find a solution without the listener library in order to keep code with basic actions.
Any help will be apreciated.

Sub pnl_main_Touch (action As Int, X As Float, Y As Float)


Select action ' Selects the Action parameter

Case Activity.ACTION_UP ' Checks if ACTION_UP

'reposition all point when mouving parent
If (img.Left<>lastimgx Or img.Top<>lastimgy) Then
'img has moved
'code to reposition points database
end if

Case Activity.ACTION_MOVE ' Checks if ACTION_MOVE
  
If imgmove Then '********************** Move action
        'move parent
        img.Left=X-x0
        img.Top=Y-y0
end if

Case Activity.ACTION_DOWN
lastimgx=img.Left
lastimgy=img.Top

if imgmove then
    'relative img coordonate
      x0=X-img.left
      y0=Y-img.Top  
 end if
 
end select

 

[Star-Dust]

Use library Gesture: https://www.b4x.com/android/forum/threads/lib-gesture-detector.21502/#content

 

[hookshy]

se library Gesture:

I wonder how the gesture lib do the pinch gesture detection ?

 

[hookshy]

Use library Gesture: https://www.b4x.com/android/forum/threads/lib-gesture-detector.21502/#content

I am trying the lib to see how I could migrate to this gesture lib.
Thanks

 

[Star-Dust]

Good

 

[hookshy]

wow
I did solved the problem ...will do some more tests by tomorow

This code I added to g.action_move

If lastpointer<>PointerID Then
        imgmove=False
        lbl_adv.Text="lock parent"
        Log("multitouch not supported")
        img.Left=lastimgx
        img.Top=lastimgy
End If