///
public bool IsConstrainedToContainer(UAP_AccessibilityManager.ESDirection direction)
{
switch (direction)
{
case UAP_AccessibilityManager.ESDirection.ELeft:
return(m_ConstrainToContainerLeft);
case UAP_AccessibilityManager.ESDirection.EUp:
return(m_ConstrainToContainerUp);
case UAP_AccessibilityManager.ESDirection.ERight:
return(m_ConstrainToContainerRight);
case UAP_AccessibilityManager.ESDirection.EDown:
return(m_ConstrainToContainerDown);
}
return(false);
}
public bool MoveFocus2D(UAP_AccessibilityManager.ESDirection direction)
{
// Select the closest item in the direction (quarter)
// that's also active.
//Debug.Log("[Container] Moving focus " + direction);
Vector2 activeItemPos = m_AllElements[m_CurrentItemIndex].m_Pos;
// Go through all items (skip current one)
Vector2 deltaPos;
int nextElementIndex = -1;
float closestDistanceSquared = -1.0f;
for (int i = 0; i < m_AllElements.Count; ++i)
{
if (i == m_CurrentItemIndex)
{
continue;
}
if (!m_AllElements[i].m_Object.IsElementActive())
{
continue;
}
deltaPos = m_AllElements[i].m_Pos - activeItemPos;
// Add in a delta scale by which one axis must be larger than the other
// to avoid going diagonal at the edges of grids with uneven numbers of elements
// in a row or column (think of a diamond shaped grid - the focus should not jump
// up or down a row when the edge is hit and the user tries to keep going.
float deltaScale = 1.1f; // this means the axis needs to be 10% larger
// Check if the position of the item is in the right quarter
bool isInQuarter = false;
switch (direction)
{
case UAP_AccessibilityManager.ESDirection.ELeft:
if (deltaPos.x < 0 && (-deltaPos.x) > Mathf.Abs(deltaPos.y) * deltaScale)
{
isInQuarter = true;
}
break;
case UAP_AccessibilityManager.ESDirection.ERight:
if (deltaPos.x > 0 && deltaPos.x > Mathf.Abs(deltaPos.y) * deltaScale)
{
isInQuarter = true;
}
break;
case UAP_AccessibilityManager.ESDirection.EUp:
if (deltaPos.y > 0 && deltaPos.y > Mathf.Abs(deltaPos.x) * deltaScale)
{
isInQuarter = true;
}
break;
case UAP_AccessibilityManager.ESDirection.EDown:
if (deltaPos.y < 0 && (-deltaPos.y) > Mathf.Abs(deltaPos.x) * deltaScale)
{
isInQuarter = true;
}
break;
}
if (!isInQuarter)
{
continue;
}
// Check distance (squared) if larger then current smallest, continue
float squaredDistance = deltaPos.SqrMagnitude();
if (nextElementIndex < 0 || squaredDistance < closestDistanceSquared)
{
nextElementIndex = i;
closestDistanceSquared = squaredDistance;
}
}
// Did the element change?
if (nextElementIndex < 0)
{
//Debug.Log("[Container] Found no element to go to.");
return(false);
}
//Debug.Log("[Container] Found a new element");
m_CurrentItemIndex = nextElementIndex;
return(true);
}
