I have an app with a game board and can pick up and move tiles around with panning using mr.gestures, that's working well.
My game board is a MR.Gestures.AbsoluteLayout and that's where I capture the panning gesture.
If I add that game board as a child to another MR.Gestures.AbsoluteLayout then it seems the gestures are blocked by the parent and it no longer works.
Is there a way to pass gestures though to children or ignore gestures on a parent in some way?
Is there a way to pass gestures though to children or ignore gestures on a parent in some way?
For me this problem appeared only on Android.. The answer is Yes:
When parent receives gesture event it must check if finger x,y is within specific childs views. If yes, parent just ignores the gesture.
Regarding the code, ill just past one event handler to get the idea. In my case i have 2 childs (like and bookmark) over a parent frame:
//-------------------------------------------------------------------
private void OnTapped_MainFrame(object sender, TapEventArgs e)
//-------------------------------------------------------------------
{
//Get parent screen abs pos in pixels
//We are using native code get absolute screen position
var ptFrame = DependencyService.Get<INiftyHelpers>().GetViewAbsolutePosition((View)sender);
//Gets childs (hotspots) screen abs position in pixels
var ptFav = DependencyService.Get<INiftyHelpers>().GetViewAbsolutePosition((View)hsFav);
var ptLike = DependencyService.Get<INiftyHelpers>().GetViewAbsolutePosition((View)hsLike);
//Gets childs (hotspots) rectangles, everything in pixels using screen density
var rectFav = new Rectangle(ptFav, new Size(hsFav.Width * AppHelper.DisplayDensity, hsFav.Height * AppHelper.DisplayDensity));
var rectLike = new Rectangle(ptLike, new Size(hsLike.Width * AppHelper.DisplayDensity, hsLike.Height * AppHelper.DisplayDensity));
//Convert the finger XY to screen pos in pixels
var ptTouch = new Point(ptFrame.X + e.Center.X * AppHelper.DisplayDensity, ptFrame.Y + e.Center.Y * AppHelper.DisplayDensity); //absolute relative to screen
//check if withing childs
if (rectFav.Contains(ptTouch) || rectLike.Contains(ptTouch))
return; //Ignore input and let childs process their gestures!
//Process input
//..
}
