Events related to snapshot

Solar2D Advanced Graphics
#1

Hello everybody

While using the snapshot library I’ve encountered a problem. If you want to add an event to a children (like a tap event) of the snapshot, you won’t be able to call the function event by “tapping” the children.

The thing is that I need to use the snapshot while having some images (children) which have tap events on them. What should I do? There is a function that allow me to do that?

P.S. I’m sorry, I’m not a native english speaker, I might have done some errors

This is an example:

local W=display.contentWidth

local H=display.contentHeight

local snap = display.newSnapshot( 300, 300 )

snap.x=W*0.5

snap.y=H*0.5

local space = display.newImageRect(“images/space.jpg”,300, 300)

snap.group:insert(space)

function foo(event)

   print("the function has been called correctly ")

end

local blueRect = display.newImageRect(“images/blueRect.png”,30,30)

blueRect:addEventListener(“tap”,foo) --I can’t call this event by clicking on it.

snap.group:insert(blueRect)

#2

Hi Francesco,

When you use a snapshot, and insert children inside, they become part of the overall snapshot and cannot have individual tap listeners on them. However, maybe you can create another display object (isVisible=false, but also .isHitTestable=true) at the same location as the child (when you add it to the snapshot), and then you add a tap listener to that object. So, basically, the new object is in the same location as the child within the snapshot, and it detects tap events.

Hope this helps,

Brent

#3

Thank you Brent, this actually helped me :smiley:

#4

Hi Francesco,

When you use a snapshot, and insert children inside, they become part of the overall snapshot and cannot have individual tap listeners on them. However, maybe you can create another display object (isVisible=false, but also .isHitTestable=true) at the same location as the child (when you add it to the snapshot), and then you add a tap listener to that object. So, basically, the new object is in the same location as the child within the snapshot, and it detects tap events.

Hope this helps,

Brent

#5

Thank you Brent, this actually helped me :smiley: