/// <summary>Maps a point to a position in the list.</summary>
/// <remarks>Maps a point to a position in the list.</remarks>
/// <param name="x">X in local coordinate</param>
/// <param name="y">Y in local coordinate</param>
/// <returns>
/// The position of the item which contains the specified point, or
/// <see cref="android.widget.AdapterView.INVALID_POSITION">android.widget.AdapterView.INVALID_POSITION
/// </see>
/// if the point does not intersect an item.
/// </returns>
public virtual int pointToPosition(int x, int y)
{
android.graphics.Rect frame = mTouchFrame;
if (frame == null)
{
mTouchFrame = new android.graphics.Rect();
frame = mTouchFrame;
}
int count = getChildCount();
{
for (int i = count - 1; i >= 0; i--)
{
android.view.View child = getChildAt(i);
if (child.getVisibility() == android.view.View.VISIBLE)
{
child.getHitRect(frame);
if (frame.contains(x, y))
{
return(mFirstPosition + i);
}
}
}
}
return(android.widget.AdapterView.INVALID_POSITION);
}
/// <summary>Returns the View that should receive a touch at the given coordinates.</summary>
/// <remarks>Returns the View that should receive a touch at the given coordinates.</remarks>
/// <param name="rawX">The raw X.</param>
/// <param name="rawY">The raw Y.</param>
/// <returns>The view that should receive the touches, or null if there is not one.</returns>
private android.view.View findViewForTouch(int rawX, int rawY)
{
// Reverse order so the child drawn on top gets first dibs.
int containerCoordsX = rawX - mContainerRawLocation[0];
int containerCoordsY = rawY - mContainerRawLocation[1];
android.graphics.Rect frame = mTempRect;
android.view.View closestChild = null;
int closestChildDistanceSq = int.MaxValue;
{
for (int i = mContainer.getChildCount() - 1; i >= 0; i--)
{
android.view.View child = mContainer.getChildAt(i);
if (child.getVisibility() != android.view.View.VISIBLE)
{
continue;
}
child.getHitRect(frame);
if (frame.contains(containerCoordsX, containerCoordsY))
{
return(child);
}
int distanceX;
if (containerCoordsX >= frame.left && containerCoordsX <= frame.right)
{
distanceX = 0;
}
else
{
distanceX = System.Math.Min(System.Math.Abs(frame.left - containerCoordsX), System.Math.Abs
(containerCoordsX - frame.right));
}
int distanceY;
if (containerCoordsY >= frame.top && containerCoordsY <= frame.bottom)
{
distanceY = 0;
}
else
{
distanceY = System.Math.Min(System.Math.Abs(frame.top - containerCoordsY), System.Math.Abs
(containerCoordsY - frame.bottom));
}
int distanceSq = distanceX * distanceX + distanceY * distanceY;
if ((distanceSq < mTouchPaddingScaledSq) && (distanceSq < closestChildDistanceSq))
{
closestChild = child;
closestChildDistanceSq = distanceSq;
}
}
}
return(closestChild);
}
