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com.unity.uiextensions
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Initial check-in of visible ony VSS (HSS yet to be updated) 

--HG--
branch : develop_5.3
pull/413/head
Simon Jackson 2016-12-18 22:51:16 +00:00
parent d101a574c8
commit 4bd100c7e9
3 changed files with 137 additions and 122 deletions
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38
Scripts/Layout/HorizontalScrollSnap.cs
View File

@ -13,39 +13,14 @@ namespace UnityEngine.UI.Extensions
[AddComponentMenu("Layout/Extensions/Horizontal Scroll Snap")]
public class HorizontalScrollSnap : ScrollSnapBase, IEndDragHandler
{
// Use this for initialization
void Awake()
{
_scroll_rect = gameObject.GetComponent<ScrollRect>();
if (_scroll_rect.horizontalScrollbar || _scroll_rect.verticalScrollbar)
{
Debug.LogWarning("Warning, using scrollbars with the Scroll Snap controls is not advised as it causes unpredictable results");
}
//Should this derrive from ScrolRect?
isVertical = false;
_screensContainer = _scroll_rect.content;
DistributePages();
if (NextButton)
NextButton.GetComponent<Button>().onClick.AddListener(() => { NextScreen(); });
if (PrevButton)
PrevButton.GetComponent<Button>().onClick.AddListener(() => { PreviousScreen(); });
}
void Start()
{
isVertical = false;
DistributePages();
_lerp = false;
_currentScreen = StartingScreen - 1;
_scrollStartPosition = _screensContainer.localPosition.x;
_scroll_rect.horizontalNormalizedPosition = (float)(_currentScreen) / (_screens - 1);
ChangeBulletsInfo(_currentScreen);
}
void Update()
@ -74,12 +49,7 @@ namespace UnityEngine.UI.Extensions
else if ((_scroll_rect.velocity.x > 0 && _scroll_rect.velocity.x > SwipeVelocityThreshold) ||
_scroll_rect.velocity.x < 0 && _scroll_rect.velocity.x < -SwipeVelocityThreshold)
{
_currentScreen = GetPageforPosition(_screensContainer.localPosition);
if (_currentScreen != _previousScreen)
{
_previousScreen = _currentScreen;
ChangeBulletsInfo(_currentScreen);
}
CurrentPage = GetPageforPosition(_screensContainer.localPosition);
}
else if (!_pointerDown)
{
@ -159,7 +129,7 @@ namespace UnityEngine.UI.Extensions
if (_currentScreen > _screens - 1)
{
_currentScreen = _screens - 1;
CurrentPage = _screens - 1;
}
_scroll_rect.horizontalNormalizedPosition = (float)(_currentScreen) / (_screens - 1);

173
Scripts/Layout/ScrollSnapBase.cs
View File

@ -8,13 +8,7 @@ namespace UnityEngine.UI.Extensions
{
public class ScrollSnapBase : MonoBehaviour, IBeginDragHandler, IDragHandler, IPointerDownHandler, IPointerUpHandler
{
internal struct VisibleItem
{
public Vector3 Position;
public int OriginalPosition;
}
internal RectTransform _screensContainer;
public RectTransform _screensContainer;
internal bool isVertical;
internal int _screens = 1;
@ -22,8 +16,6 @@ namespace UnityEngine.UI.Extensions
internal float _scrollStartPosition;
internal float _childSize;
private float _childPos;
//internal Vector3[] _positions;
//internal VisibleItem[] _visiblePositions;
internal ScrollRect _scroll_rect;
internal Vector3 _lerp_target;
internal bool _lerp;
@ -32,12 +24,15 @@ namespace UnityEngine.UI.Extensions
[Serializable]
public class SelectionChangeStartEvent : UnityEvent { }
[Serializable]
public class SelectionPageChangedEvent : UnityEvent<int> { }
[Serializable]
public class SelectionChangeEndEvent : UnityEvent { }
[Tooltip("The visible bounds area, controls which items are visible/enabled. *Note Should use a RectMask. (optional)")]
public RectTransform MaskArea;
[Tooltip("Pixel size to buffer arround Mask Area. (optional)")]
public float MaskBuffer;
public float MaskBuffer = 1;
public int HalfNoVisibleItems;
[Tooltip("The gameobject that contains toggles which suggest pagination. (optional)")]
public GameObject Pagination;
@ -77,16 +72,120 @@ namespace UnityEngine.UI.Extensions
{
return _currentScreen;
}
internal set
{
if (value != _currentScreen)
{
_previousScreen = _currentScreen;
_currentScreen = value;
ChangeBulletsInfo(_currentScreen);
UpdateVisible();
}
}
}
[SerializeField]
private SelectionChangeStartEvent m_OnSelectionChangeStartEvent = new SelectionChangeStartEvent();
public SelectionChangeStartEvent OnSelectionChangeStartEvent { get { return m_OnSelectionChangeStartEvent; } set { m_OnSelectionChangeStartEvent = value; } }
[SerializeField]
private SelectionPageChangedEvent m_OnSelectionPageChangedEvent = new SelectionPageChangedEvent();
public SelectionPageChangedEvent OnSelectionPageChangedEvent { get { return m_OnSelectionPageChangedEvent; } set { m_OnSelectionPageChangedEvent = value; } }
[SerializeField]
private SelectionChangeEndEvent m_OnSelectionChangeEndEvent = new SelectionChangeEndEvent();
public SelectionChangeEndEvent OnSelectionChangeEndEvent { get { return m_OnSelectionChangeEndEvent; } set { m_OnSelectionChangeEndEvent = value; } }
public GameObject[] ChildObjects;
// Use this for initialization
void Awake()
{
_scroll_rect = gameObject.GetComponent<ScrollRect>();
if (_scroll_rect.horizontalScrollbar || _scroll_rect.verticalScrollbar)
{
Debug.LogWarning("Warning, using scrollbars with the Scroll Snap controls is not advised as it causes unpredictable results");
}
_screensContainer = _scroll_rect.content;
int childCount;
if (ChildObjects != null && ChildObjects.Length > 0)
{
if (_screensContainer.transform.childCount > 0)
{
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;
}
childCount = ChildObjects.Length;
for (int i = 0; i < childCount; i++)
{
ChildObjects[i] = GameObject.Instantiate(ChildObjects[i]);
ChildObjects[i].transform.SetParent(_screensContainer.transform);
if (MaskArea && ChildObjects[i].activeSelf)
{
ChildObjects[i].SetActive(false);
}
}
}
else
{
childCount = ChildObjects.Length;
ChildObjects = new GameObject[childCount];
for (int i = 0; i < childCount; i++)
{
ChildObjects[i] = _screensContainer.transform.GetChild(i).gameObject;
if (MaskArea && ChildObjects[i].activeSelf)
{
ChildObjects[i].SetActive(false);
}
}
}
if (NextButton)
NextButton.GetComponent<Button>().onClick.AddListener(() => { NextScreen(); });
if (PrevButton)
PrevButton.GetComponent<Button>().onClick.AddListener(() => { PreviousScreen(); });
}
internal void CalculateVisible()
{
float MaskSize = isVertical ? MaskArea.rect.height : MaskArea.rect.width;
HalfNoVisibleItems = (int)Math.Round(MaskSize / (_childSize * MaskBuffer), MidpointRounding.AwayFromZero) / 2 + 2;
int StartingItemsBefore = StartingScreen - HalfNoVisibleItems < 0 ? 0 : HalfNoVisibleItems;
int StartingItemsAfter = _screensContainer.childCount - StartingScreen < HalfNoVisibleItems ? _screensContainer.childCount - StartingScreen : HalfNoVisibleItems;
for (int i = StartingScreen - StartingItemsBefore; i < StartingScreen + StartingItemsAfter - 1; i++)
{
ChildObjects[i].SetActive(true);
}
}
void UpdateVisible()
{
int BottomItem = _currentScreen - HalfNoVisibleItems < 0 ? 0 : HalfNoVisibleItems;
int TopItem = _screensContainer.childCount - _currentScreen < HalfNoVisibleItems ? _screensContainer.childCount - _currentScreen : HalfNoVisibleItems;
for (int i = CurrentPage - BottomItem; i < CurrentPage + TopItem; i++)
{
ChildObjects[i].SetActive(true);
}
if(_screensContainer.childCount - _currentScreen > HalfNoVisibleItems) ChildObjects[CurrentPage + TopItem + 1].SetActive(false);
if(_currentScreen - HalfNoVisibleItems > 0) ChildObjects[CurrentPage - BottomItem - 1].SetActive(false);
//if (_previousScreen < _currentScreen)
//{
// ChildObjects[TopItem].SetActive(true);
// if(TopItem < _screensContainer.childCount - HalfNoVisibleItems) ChildObjects[TopItem + 1].SetActive(true);
// ChildObjects[BottomItem].SetActive(false);
//}
//else
//{
// ChildObjects[TopItem].SetActive(false);
// ChildObjects[BottomItem].SetActive(true);
// if(BottomItem > 0) ChildObjects[BottomItem - 1].SetActive(true);
//}
}
//Function for switching screens with buttons
public void NextScreen()
{
@ -95,11 +194,8 @@ namespace UnityEngine.UI.Extensions
if (!_lerp) StartScreenChange();
_lerp = true;
_currentScreen++;
CurrentPage = _currentScreen + 1;
GetPositionforPage(_currentScreen, ref _lerp_target);
// _lerp_target = _positions[_currentScreen];
ChangeBulletsInfo(_currentScreen);
}
}
@ -111,11 +207,8 @@ namespace UnityEngine.UI.Extensions
if (!_lerp) StartScreenChange();
_lerp = true;
_currentScreen--;
CurrentPage = _currentScreen - 1;
GetPositionforPage(_currentScreen, ref _lerp_target);
// _lerp_target = _positions[_currentScreen];
ChangeBulletsInfo(_currentScreen);
}
}
@ -131,35 +224,12 @@ namespace UnityEngine.UI.Extensions
if (!_lerp) StartScreenChange();
_lerp = true;
_currentScreen = screenIndex;
CurrentPage = screenIndex;
GetPositionforPage(_currentScreen, ref _lerp_target);
// _lerp_target = _positions[_currentScreen];
ChangeBulletsInfo(_currentScreen);
}
}
//find the closest registered point to the releasing point
internal Vector3 FindClosestFrom(Vector3 start, VisibleItem[] positions)
{
Vector3 closestPosition = Vector3.zero;
float closest = Mathf.Infinity;
float distanceToTarget = 0;
for (int i = 0; i < positions.Length; i++)
{
distanceToTarget = Vector3.Distance(start, positions[i].Position);
if (distanceToTarget < closest)
{
closest = distanceToTarget;
closestPosition = positions[i].Position;
}
}
float close = -(int)Math.Round((start.y - _scrollStartPosition) / _childSize);
return closestPosition;
}
internal int GetPageforPosition(Vector3 pos)
{
return isVertical ?
@ -183,27 +253,26 @@ namespace UnityEngine.UI.Extensions
internal void ScrollToClosestElement()
{
_lerp = true;
//_lerp_target = FindClosestFrom(_screensContainer.localPosition, _visiblePositions);
_currentScreen = GetPageforPosition(_screensContainer.localPosition);
CurrentPage = GetPageforPosition(_screensContainer.localPosition);
GetPositionforPage(_currentScreen, ref _lerp_target);
ChangeBulletsInfo(_currentScreen);
}
//changes the bullets on the bottom of the page - pagination
internal void ChangeBulletsInfo(int currentScreen)
internal void ChangeBulletsInfo(int targetScreen)
{
if (Pagination)
for (int i = 0; i < Pagination.transform.childCount; i++)
{
Pagination.transform.GetChild(i).GetComponent<Toggle>().isOn = (currentScreen == i)
Pagination.transform.GetChild(i).GetComponent<Toggle>().isOn = (targetScreen == i)
? true
: false;
}
}
void OnValidate()
private void OnValidate()
{
var childCount = gameObject.GetComponent<ScrollRect>().content.childCount;
var childCount = ChildObjects == null ? _screensContainer.childCount : ChildObjects.Length;
if (StartingScreen > childCount - 1)
{
StartingScreen = childCount - 1;
@ -219,6 +288,12 @@ namespace UnityEngine.UI.Extensions
OnSelectionChangeStartEvent.Invoke();
}
internal void ScreenChange(int previousScreen)
{
OnSelectionPageChangedEvent.Invoke(_currentScreen);
}
internal void EndScreenChange()
{
OnSelectionChangeEndEvent.Invoke();
@ -254,7 +329,5 @@ namespace UnityEngine.UI.Extensions
_pointerDown = false;
}
#endregion
}
}

48
Scripts/Layout/VerticalScrollSnap.cs
View File

@ -13,38 +13,15 @@ namespace UnityEngine.UI.Extensions
[AddComponentMenu("Layout/Extensions/Vertical Scroll Snap")]
public class VerticalScrollSnap : ScrollSnapBase, IEndDragHandler
{
// Use this for initialization
void Awake()
{
_scroll_rect = gameObject.GetComponent<ScrollRect>();
if (_scroll_rect.horizontalScrollbar || _scroll_rect.verticalScrollbar)
{
Debug.LogWarning("Warning, using scrollbars with the Scroll Snap controls is not advised as it causes unpredictable results");
}
//Should this derrive from ScrolRect?
isVertical = true;
_screensContainer = _scroll_rect.content;
DistributePages();
if (NextButton)
NextButton.GetComponent<Button>().onClick.AddListener(() => { NextScreen(); });
if (PrevButton)
PrevButton.GetComponent<Button>().onClick.AddListener(() => { PreviousScreen(); });
}
void Start()
{
isVertical = true;
DistributePages();
CalculateVisible();
_lerp = false;
_currentScreen = StartingScreen - 1;
_scrollStartPosition = _screensContainer.localPosition.y;
_scroll_rect.verticalNormalizedPosition = (float)(_currentScreen) / (float)(_screens - 1);
ChangeBulletsInfo(_currentScreen);
}
void Update()
@ -70,17 +47,12 @@ namespace UnityEngine.UI.Extensions
}
}
//If the container is moving faster than the threshold, then just update the pages as they pass
else if ((_scroll_rect.velocity.y > 0 && _scroll_rect.velocity.y > SwipeVelocityThreshold) ||
_scroll_rect.velocity.y < 0 && _scroll_rect.velocity.y < -SwipeVelocityThreshold)
{
_currentScreen = GetPageforPosition(_screensContainer.localPosition);
if (_currentScreen != _previousScreen)
{
_previousScreen = _currentScreen;
ChangeBulletsInfo(_currentScreen);
}
}
else if(!_pointerDown)
//else if ((_scroll_rect.velocity.y > 0 && _scroll_rect.velocity.y > SwipeVelocityThreshold) ||
// _scroll_rect.velocity.y < 0 && _scroll_rect.velocity.y < -SwipeVelocityThreshold)
//{
CurrentPage = GetPageforPosition(_screensContainer.localPosition);
//}
if(!_pointerDown)
{
ScrollToClosestElement();
}
@ -156,7 +128,7 @@ namespace UnityEngine.UI.Extensions
if (_currentScreen > _screens - 1)
{
_currentScreen = _screens - 1;
CurrentPage = _screens - 1;
}
_scroll_rect.verticalNormalizedPosition = (float)(_currentScreen) / (_screens - 1);