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Updated Scroll Snap Base to resolve #119

pull/413/head
Simon Jackson 2017-02-23 15:18:16 +00:00
parent 48e162ebde
commit cc7c66f9f5
1 changed files with 374 additions and 366 deletions
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18
Scripts/Layout/ScrollSnapBase.cs
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@ -40,7 +40,7 @@ namespace UnityEngine.UI.Extensions
[Tooltip("The distance between two pages based on page height, by default pages are next to each other")]
[SerializeField]
[Range(1, 8)]
[Range(0, 8)]
public float PageStep = 1;
[Tooltip("The gameobject that contains toggles which suggest pagination. (optional)")]
@ -76,6 +76,7 @@ namespace UnityEngine.UI.Extensions
{
return _currentPage;
}
internal set
{
if ((value != _currentPage && value >= 0 && value < _screensContainer.childCount) || (value == 0 && _screensContainer.childCount == 0))
@ -110,7 +111,6 @@ namespace UnityEngine.UI.Extensions
private SelectionChangeEndEvent m_OnSelectionChangeEndEvent = new SelectionChangeEndEvent();
public SelectionChangeEndEvent OnSelectionChangeEndEvent { get { return m_OnSelectionChangeEndEvent; } set { m_OnSelectionChangeEndEvent = value; } }
// Use this for initialization
void Awake()
{
@ -134,6 +134,7 @@ namespace UnityEngine.UI.Extensions
Debug.LogError("ScrollRect Content has children, this is not supported when using managed Child Objects\n Either remove the ScrollRect Content children or clear the ChildObjects array");
return;
}
InitialiseChildObjectsFromArray();
}
else
@ -178,6 +179,7 @@ namespace UnityEngine.UI.Extensions
childRect.localScale = _screensContainer.localScale;
childRect.position = _screensContainer.position;
}
child.transform.SetParent(_screensContainer.transform);
ChildObjects[i] = child;
if (MaskArea && ChildObjects[i].activeSelf)
@ -199,17 +201,19 @@ namespace UnityEngine.UI.Extensions
_halfNoVisibleItems = (int)Math.Round(_maskSize / (_childSize * MaskBuffer), MidpointRounding.AwayFromZero) / 2;
_bottomItem = _topItem = 0;
//work out how many items below the current page can be visible
for (int i = _halfNoVisibleItems + 1; i > 0 ; i--)
for (int i = _halfNoVisibleItems + 1; i > 0; i--)
{
_bottomItem = _currentPage - i < 0 ? 0 : i;
if (_bottomItem > 0) break;
}
//work out how many items above the current page can be visible
for (int i = _halfNoVisibleItems + 1; i > 0; i--)
{
_topItem = _screensContainer.childCount - _currentPage - i < 0 ? 0 : i;
if (_topItem > 0) break;
}
//Set the active items active
for (int i = CurrentPage - _bottomItem; i < CurrentPage + _topItem; i++)
{
@ -229,7 +233,6 @@ namespace UnityEngine.UI.Extensions
if (_screensContainer.childCount - _currentPage > _topItem) ChildObjects[CurrentPage + _topItem].SetActive(false);
}
//Function for switching screens with buttons
public void NextScreen()
{
@ -361,6 +364,7 @@ namespace UnityEngine.UI.Extensions
if (PrevButton) {
PrevButton.GetComponent<Button>().interactable = targetScreen > 0;
}
if (NextButton) {
NextButton.GetComponent<Button>().interactable = targetScreen < _screensContainer.transform.childCount - 1;
}
@ -376,19 +380,23 @@ namespace UnityEngine.UI.Extensions
{
StartingScreen = childCount - 1;
}
if (StartingScreen < 0)
{
StartingScreen = 0;
}
}
if (MaskBuffer <= 0)
{
MaskBuffer = 1;
}
if (PageStep < 0)
{
PageStep = 0;
}
if (PageStep > 8)
{
PageStep = 9;
@ -443,5 +451,5 @@ namespace UnityEngine.UI.Extensions
}
#endregion
}
}
}