Updated Scroll Snap Base to resolve #119
Simon Jackson
parent
48e162ebde
commit
cc7c66f9f5
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@ -4,444 +4,452 @@ using UnityEngine.EventSystems;
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namespace UnityEngine.UI.Extensions
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{
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public class ScrollSnapBase : MonoBehaviour, IBeginDragHandler, IDragHandler
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{
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internal RectTransform _screensContainer;
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internal bool _isVertical;
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public class ScrollSnapBase : MonoBehaviour, IBeginDragHandler, IDragHandler
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{
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internal RectTransform _screensContainer;
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internal bool _isVertical;
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internal int _screens = 1;
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internal int _screens = 1;
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internal float _scrollStartPosition;
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internal float _childSize;
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private float _childPos, _maskSize;
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internal Vector2 _childAnchorPoint;
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internal ScrollRect _scroll_rect;
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internal Vector3 _lerp_target;
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internal bool _lerp;
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internal bool _pointerDown = false;
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internal bool _settled = true;
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internal Vector3 _startPosition = new Vector3();
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[Tooltip("The currently active page")]
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internal int _currentPage;
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internal int _previousPage;
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internal int _halfNoVisibleItems;
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private int _bottomItem, _topItem;
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internal float _scrollStartPosition;
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internal float _childSize;
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private float _childPos, _maskSize;
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internal Vector2 _childAnchorPoint;
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internal ScrollRect _scroll_rect;
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internal Vector3 _lerp_target;
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internal bool _lerp;
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internal bool _pointerDown = false;
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internal bool _settled = true;
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internal Vector3 _startPosition = new Vector3();
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[Tooltip("The currently active page")]
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internal int _currentPage;
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internal int _previousPage;
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internal int _halfNoVisibleItems;
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private int _bottomItem, _topItem;
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[Serializable]
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public class SelectionChangeStartEvent : UnityEvent { }
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[Serializable]
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public class SelectionPageChangedEvent : UnityEvent<int> { }
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[Serializable]
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public class SelectionChangeEndEvent : UnityEvent<int> { }
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[Serializable]
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public class SelectionChangeStartEvent : UnityEvent { }
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[Serializable]
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public class SelectionPageChangedEvent : UnityEvent<int> { }
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[Serializable]
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public class SelectionChangeEndEvent : UnityEvent<int> { }
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[Tooltip("The screen / page to start the control on\n*Note, this is a 0 indexed array")]
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[SerializeField]
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public int StartingScreen = 0;
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[Tooltip("The screen / page to start the control on\n*Note, this is a 0 indexed array")]
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[SerializeField]
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public int StartingScreen = 0;
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[Tooltip("The distance between two pages based on page height, by default pages are next to each other")]
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[SerializeField]
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[Range(1, 8)]
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public float PageStep = 1;
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[Tooltip("The distance between two pages based on page height, by default pages are next to each other")]
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[SerializeField]
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[Range(0, 8)]
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public float PageStep = 1;
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[Tooltip("The gameobject that contains toggles which suggest pagination. (optional)")]
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public GameObject Pagination;
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[Tooltip("The gameobject that contains toggles which suggest pagination. (optional)")]
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public GameObject Pagination;
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[Tooltip("Button to go to the previous page. (optional)")]
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public GameObject PrevButton;
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[Tooltip("Button to go to the previous page. (optional)")]
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public GameObject PrevButton;
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[Tooltip("Button to go to the next page. (optional)")]
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public GameObject NextButton;
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[Tooltip("Button to go to the next page. (optional)")]
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public GameObject NextButton;
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[Tooltip("Transition speed between pages. (optional)")]
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public float transitionSpeed = 7.5f;
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[Tooltip("Transition speed between pages. (optional)")]
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public float transitionSpeed = 7.5f;
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[Tooltip("Fast Swipe makes swiping page next / previous (optional)")]
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public Boolean UseFastSwipe = false;
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[Tooltip("Fast Swipe makes swiping page next / previous (optional)")]
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public Boolean UseFastSwipe = false;
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[Tooltip("How far swipe has to travel to initiate a page change (optional)")]
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public int FastSwipeThreshold = 100;
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[Tooltip("How far swipe has to travel to initiate a page change (optional)")]
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public int FastSwipeThreshold = 100;
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[Tooltip("Speed at which the ScrollRect will keep scrolling before slowing down and stopping (optional)")]
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public int SwipeVelocityThreshold = 200;
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[Tooltip("Speed at which the ScrollRect will keep scrolling before slowing down and stopping (optional)")]
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public int SwipeVelocityThreshold = 200;
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[Tooltip("The visible bounds area, controls which items are visible/enabled. *Note Should use a RectMask. (optional)")]
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public RectTransform MaskArea;
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[Tooltip("The visible bounds area, controls which items are visible/enabled. *Note Should use a RectMask. (optional)")]
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public RectTransform MaskArea;
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[Tooltip("Pixel size to buffer arround Mask Area. (optional)")]
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public float MaskBuffer = 1;
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public int CurrentPage
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{
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get
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{
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return _currentPage;
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}
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internal set
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{
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if ((value != _currentPage && value >= 0 && value < _screensContainer.childCount) || (value == 0 && _screensContainer.childCount == 0))
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{
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_previousPage = _currentPage;
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_currentPage = value;
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if(MaskArea) UpdateVisible();
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if(!_lerp) ScreenChange();
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OnCurrentScreenChange(_currentPage);
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}
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}
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}
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[Tooltip("Pixel size to buffer arround Mask Area. (optional)")]
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public float MaskBuffer = 1;
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[Tooltip("(Experimental)\nBy default, child array objects will use the parent transform\nHowever you can disable this for some interesting effects")]
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public bool UseParentTransform = true;
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public int CurrentPage
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{
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get
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{
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return _currentPage;
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}
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[Tooltip("Scroll Snap children. (optional)\nEither place objects in the scene as children OR\nPrefabs in this array, NOT BOTH")]
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public GameObject[] ChildObjects;
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[SerializeField]
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[Tooltip("Event fires when a user starts to change the selection")]
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private SelectionChangeStartEvent m_OnSelectionChangeStartEvent = new SelectionChangeStartEvent();
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public SelectionChangeStartEvent OnSelectionChangeStartEvent { get { return m_OnSelectionChangeStartEvent; } set { m_OnSelectionChangeStartEvent = value; } }
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internal set
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{
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if ((value != _currentPage && value >= 0 && value < _screensContainer.childCount) || (value == 0 && _screensContainer.childCount == 0))
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{
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_previousPage = _currentPage;
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_currentPage = value;
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if(MaskArea) UpdateVisible();
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if(!_lerp) ScreenChange();
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OnCurrentScreenChange(_currentPage);
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}
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}
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}
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[SerializeField]
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[Tooltip("Event fires as the page changes, while dragging or jumping")]
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private SelectionPageChangedEvent m_OnSelectionPageChangedEvent = new SelectionPageChangedEvent();
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public SelectionPageChangedEvent OnSelectionPageChangedEvent { get { return m_OnSelectionPageChangedEvent; } set { m_OnSelectionPageChangedEvent = value; } }
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[Tooltip("(Experimental)\nBy default, child array objects will use the parent transform\nHowever you can disable this for some interesting effects")]
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public bool UseParentTransform = true;
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[SerializeField]
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[Tooltip("Event fires when the page settles after a user has dragged")]
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private SelectionChangeEndEvent m_OnSelectionChangeEndEvent = new SelectionChangeEndEvent();
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public SelectionChangeEndEvent OnSelectionChangeEndEvent { get { return m_OnSelectionChangeEndEvent; } set { m_OnSelectionChangeEndEvent = value; } }
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[Tooltip("Scroll Snap children. (optional)\nEither place objects in the scene as children OR\nPrefabs in this array, NOT BOTH")]
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public GameObject[] ChildObjects;
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[SerializeField]
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[Tooltip("Event fires when a user starts to change the selection")]
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private SelectionChangeStartEvent m_OnSelectionChangeStartEvent = new SelectionChangeStartEvent();
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public SelectionChangeStartEvent OnSelectionChangeStartEvent { get { return m_OnSelectionChangeStartEvent; } set { m_OnSelectionChangeStartEvent = value; } }
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// Use this for initialization
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[SerializeField]
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[Tooltip("Event fires as the page changes, while dragging or jumping")]
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private SelectionPageChangedEvent m_OnSelectionPageChangedEvent = new SelectionPageChangedEvent();
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public SelectionPageChangedEvent OnSelectionPageChangedEvent { get { return m_OnSelectionPageChangedEvent; } set { m_OnSelectionPageChangedEvent = value; } }
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[SerializeField]
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[Tooltip("Event fires when the page settles after a user has dragged")]
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private SelectionChangeEndEvent m_OnSelectionChangeEndEvent = new SelectionChangeEndEvent();
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public SelectionChangeEndEvent OnSelectionChangeEndEvent { get { return m_OnSelectionChangeEndEvent; } set { m_OnSelectionChangeEndEvent = value; } }
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// Use this for initialization
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void Awake()
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{
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_scroll_rect = gameObject.GetComponent<ScrollRect>();
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{
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_scroll_rect = gameObject.GetComponent<ScrollRect>();
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if (_scroll_rect.horizontalScrollbar || _scroll_rect.verticalScrollbar)
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{
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Debug.LogWarning("Warning, using scrollbars with the Scroll Snap controls is not advised as it causes unpredictable results");
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}
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if (_scroll_rect.horizontalScrollbar || _scroll_rect.verticalScrollbar)
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{
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Debug.LogWarning("Warning, using scrollbars with the Scroll Snap controls is not advised as it causes unpredictable results");
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}
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if (StartingScreen < 0)
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{
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StartingScreen = 0;
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}
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if (StartingScreen < 0)
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{
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StartingScreen = 0;
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}
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_screensContainer = _scroll_rect.content;
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if (ChildObjects != null && ChildObjects.Length > 0)
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{
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if (_screensContainer.transform.childCount > 0)
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{
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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");
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return;
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}
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InitialiseChildObjectsFromArray();
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}
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else
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{
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InitialiseChildObjectsFromScene();
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}
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_screensContainer = _scroll_rect.content;
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if (ChildObjects != null && ChildObjects.Length > 0)
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{
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if (_screensContainer.transform.childCount > 0)
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{
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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");
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return;
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}
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if (NextButton)
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NextButton.GetComponent<Button>().onClick.AddListener(() => { NextScreen(); });
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InitialiseChildObjectsFromArray();
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}
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else
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{
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InitialiseChildObjectsFromScene();
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}
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if (PrevButton)
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PrevButton.GetComponent<Button>().onClick.AddListener(() => { PreviousScreen(); });
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}
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if (NextButton)
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NextButton.GetComponent<Button>().onClick.AddListener(() => { NextScreen(); });
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internal void InitialiseChildObjectsFromScene()
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{
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int childCount = _screensContainer.childCount;
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ChildObjects = new GameObject[childCount];
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for (int i = 0; i < childCount; i++)
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{
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ChildObjects[i] = _screensContainer.transform.GetChild(i).gameObject;
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if (MaskArea && ChildObjects[i].activeSelf)
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{
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ChildObjects[i].SetActive(false);
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}
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}
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}
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if (PrevButton)
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PrevButton.GetComponent<Button>().onClick.AddListener(() => { PreviousScreen(); });
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}
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internal void InitialiseChildObjectsFromArray()
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{
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int childCount = ChildObjects.Length;
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RectTransform childRect;
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GameObject child;
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for (int i = 0; i < childCount; i++)
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{
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child = GameObject.Instantiate(ChildObjects[i]);
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//Optionally, use original GO transform when initialising, by default will use parent RectTransform position/rotation
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internal void InitialiseChildObjectsFromScene()
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{
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int childCount = _screensContainer.childCount;
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ChildObjects = new GameObject[childCount];
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for (int i = 0; i < childCount; i++)
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{
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ChildObjects[i] = _screensContainer.transform.GetChild(i).gameObject;
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if (MaskArea && ChildObjects[i].activeSelf)
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{
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ChildObjects[i].SetActive(false);
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}
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}
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}
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internal void InitialiseChildObjectsFromArray()
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{
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int childCount = ChildObjects.Length;
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RectTransform childRect;
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GameObject child;
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for (int i = 0; i < childCount; i++)
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{
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child = GameObject.Instantiate(ChildObjects[i]);
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//Optionally, use original GO transform when initialising, by default will use parent RectTransform position/rotation
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if (UseParentTransform)
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{
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childRect = child.GetComponent<RectTransform>();
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childRect.rotation = _screensContainer.rotation;
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childRect.localScale = _screensContainer.localScale;
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childRect.position = _screensContainer.position;
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}
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child.transform.SetParent(_screensContainer.transform);
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ChildObjects[i] = child;
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if (MaskArea && ChildObjects[i].activeSelf)
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{
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ChildObjects[i].SetActive(false);
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}
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}
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}
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{
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childRect = child.GetComponent<RectTransform>();
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childRect.rotation = _screensContainer.rotation;
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childRect.localScale = _screensContainer.localScale;
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childRect.position = _screensContainer.position;
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}
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internal void UpdateVisible()
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{
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//If there are no objects in the scene or a mask, exit
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child.transform.SetParent(_screensContainer.transform);
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ChildObjects[i] = child;
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if (MaskArea && ChildObjects[i].activeSelf)
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{
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ChildObjects[i].SetActive(false);
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}
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}
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}
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internal void UpdateVisible()
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{
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//If there are no objects in the scene or a mask, exit
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if (!MaskArea || ChildObjects == null || ChildObjects.Length < 1 || _screensContainer.childCount < 1)
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{
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return;
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}
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{
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return;
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}
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_maskSize = _isVertical ? MaskArea.rect.height : MaskArea.rect.width;
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_halfNoVisibleItems = (int)Math.Round(_maskSize / (_childSize * MaskBuffer), MidpointRounding.AwayFromZero) / 2;
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_bottomItem = _topItem = 0;
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//work out how many items below the current page can be visible
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for (int i = _halfNoVisibleItems + 1; i > 0 ; i--)
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{
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_bottomItem = _currentPage - i < 0 ? 0 : i;
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if (_bottomItem > 0) break;
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}
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//work out how many items above the current page can be visible
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_maskSize = _isVertical ? MaskArea.rect.height : MaskArea.rect.width;
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_halfNoVisibleItems = (int)Math.Round(_maskSize / (_childSize * MaskBuffer), MidpointRounding.AwayFromZero) / 2;
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_bottomItem = _topItem = 0;
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//work out how many items below the current page can be visible
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for (int i = _halfNoVisibleItems + 1; i > 0; i--)
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{
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_topItem = _screensContainer.childCount - _currentPage - i < 0 ? 0 : i;
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if (_topItem > 0) break;
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}
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//Set the active items active
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{
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_bottomItem = _currentPage - i < 0 ? 0 : i;
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if (_bottomItem > 0) break;
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}
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//work out how many items above the current page can be visible
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for (int i = _halfNoVisibleItems + 1; i > 0; i--)
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{
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_topItem = _screensContainer.childCount - _currentPage - i < 0 ? 0 : i;
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if (_topItem > 0) break;
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}
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//Set the active items active
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for (int i = CurrentPage - _bottomItem; i < CurrentPage + _topItem; i++)
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{
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try
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{
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ChildObjects[i].SetActive(true);
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}
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catch
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{
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Debug.Log("Failed to setactive child [" + i + "]");
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}
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}
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{
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try
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{
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ChildObjects[i].SetActive(true);
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}
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catch
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{
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Debug.Log("Failed to setactive child [" + i + "]");
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}
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}
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//Deactivate items out of visibility at the bottom of the ScrollRect Mask (only on scroll)
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if (_currentPage > _halfNoVisibleItems) ChildObjects[CurrentPage - _bottomItem].SetActive(false);
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//Deactivate items out of visibility at the top of the ScrollRect Mask (only on scroll)
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if (_screensContainer.childCount - _currentPage > _topItem) ChildObjects[CurrentPage + _topItem].SetActive(false);
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}
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//Deactivate items out of visibility at the bottom of the ScrollRect Mask (only on scroll)
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if (_currentPage > _halfNoVisibleItems) ChildObjects[CurrentPage - _bottomItem].SetActive(false);
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//Deactivate items out of visibility at the top of the ScrollRect Mask (only on scroll)
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if (_screensContainer.childCount - _currentPage > _topItem) ChildObjects[CurrentPage + _topItem].SetActive(false);
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}
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//Function for switching screens with buttons
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//Function for switching screens with buttons
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public void NextScreen()
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{
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if (_currentPage < _screens - 1)
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{
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if (!_lerp) StartScreenChange();
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{
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if (_currentPage < _screens - 1)
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{
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if (!_lerp) StartScreenChange();
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_lerp = true;
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CurrentPage = _currentPage + 1;
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GetPositionforPage(_currentPage, ref _lerp_target);
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ScreenChange();
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}
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}
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_lerp = true;
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CurrentPage = _currentPage + 1;
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GetPositionforPage(_currentPage, ref _lerp_target);
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ScreenChange();
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}
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}
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//Function for switching screens with buttons
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//Function for switching screens with buttons
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public void PreviousScreen()
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{
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if (_currentPage > 0)
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{
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if (!_lerp) StartScreenChange();
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{
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if (_currentPage > 0)
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{
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if (!_lerp) StartScreenChange();
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_lerp = true;
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CurrentPage = _currentPage - 1;
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GetPositionforPage(_currentPage, ref _lerp_target);
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ScreenChange();
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}
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}
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_lerp = true;
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CurrentPage = _currentPage - 1;
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GetPositionforPage(_currentPage, ref _lerp_target);
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ScreenChange();
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}
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}
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/// <summary>
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/// Function for switching to a specific screen
|
||||
/// *Note, this is based on a 0 starting index - 0 to x
|
||||
/// </summary>
|
||||
/// <param name="screenIndex">0 starting index of page to jump to</param>
|
||||
/// <summary>
|
||||
/// Function for switching to a specific screen
|
||||
/// *Note, this is based on a 0 starting index - 0 to x
|
||||
/// </summary>
|
||||
/// <param name="screenIndex">0 starting index of page to jump to</param>
|
||||
public void GoToScreen(int screenIndex)
|
||||
{
|
||||
if (screenIndex <= _screens - 1 && screenIndex >= 0)
|
||||
{
|
||||
if (!_lerp) StartScreenChange();
|
||||
{
|
||||
if (screenIndex <= _screens - 1 && screenIndex >= 0)
|
||||
{
|
||||
if (!_lerp) StartScreenChange();
|
||||
|
||||
_lerp = true;
|
||||
CurrentPage = screenIndex;
|
||||
GetPositionforPage(_currentPage, ref _lerp_target);
|
||||
ScreenChange();
|
||||
}
|
||||
}
|
||||
_lerp = true;
|
||||
CurrentPage = screenIndex;
|
||||
GetPositionforPage(_currentPage, ref _lerp_target);
|
||||
ScreenChange();
|
||||
}
|
||||
}
|
||||
|
||||
/// <summary>
|
||||
/// Gets the closest page for the current Scroll Rect container position
|
||||
/// </summary>
|
||||
/// <param name="pos">Position to test, normally the Scroll Rect container Local position</param>
|
||||
/// <returns>Closest Page number (zero indexed array value)</returns>
|
||||
/// <summary>
|
||||
/// Gets the closest page for the current Scroll Rect container position
|
||||
/// </summary>
|
||||
/// <param name="pos">Position to test, normally the Scroll Rect container Local position</param>
|
||||
/// <returns>Closest Page number (zero indexed array value)</returns>
|
||||
internal int GetPageforPosition(Vector3 pos)
|
||||
{
|
||||
return _isVertical ?
|
||||
{
|
||||
return _isVertical ?
|
||||
-(int)Math.Round((pos.y - _scrollStartPosition) / _childSize) :
|
||||
-(int)Math.Round((pos.x - _scrollStartPosition) / _childSize);
|
||||
}
|
||||
}
|
||||
|
||||
/// <summary>
|
||||
/// Validates if the current Scroll Rect container position is within the bounds for a page
|
||||
/// </summary>
|
||||
/// <param name="pos">Position to test, normally the Scroll Rect container Local position</param>
|
||||
/// <returns>True / False, is the position in the bounds of a page</returns>
|
||||
/// <summary>
|
||||
/// Validates if the current Scroll Rect container position is within the bounds for a page
|
||||
/// </summary>
|
||||
/// <param name="pos">Position to test, normally the Scroll Rect container Local position</param>
|
||||
/// <returns>True / False, is the position in the bounds of a page</returns>
|
||||
internal bool IsRectSettledOnaPage(Vector3 pos)
|
||||
{
|
||||
return _isVertical ?
|
||||
{
|
||||
return _isVertical ?
|
||||
-((pos.y - _scrollStartPosition) / _childSize) == -(int)Math.Round((pos.y - _scrollStartPosition) / _childSize) :
|
||||
-((pos.x - _scrollStartPosition) / _childSize) == -(int)Math.Round((pos.x - _scrollStartPosition) / _childSize);
|
||||
}
|
||||
-((pos.x - _scrollStartPosition) / _childSize) == -(int)Math.Round((pos.x - _scrollStartPosition) / _childSize);
|
||||
}
|
||||
|
||||
/// <summary>
|
||||
/// Returns the local position for a child page based on the required page number
|
||||
/// </summary>
|
||||
/// <param name="page">Page that the position is required for (Zero indexed array value)</param>
|
||||
/// <param name="target">Outputs the local position for the selected page</param>
|
||||
/// <summary>
|
||||
/// Returns the local position for a child page based on the required page number
|
||||
/// </summary>
|
||||
/// <param name="page">Page that the position is required for (Zero indexed array value)</param>
|
||||
/// <param name="target">Outputs the local position for the selected page</param>
|
||||
internal void GetPositionforPage(int page, ref Vector3 target)
|
||||
{
|
||||
_childPos = -_childSize * page;
|
||||
if (_isVertical)
|
||||
{
|
||||
target.y = _childPos + _scrollStartPosition;
|
||||
}
|
||||
else
|
||||
{
|
||||
target.x = _childPos + _scrollStartPosition;
|
||||
}
|
||||
}
|
||||
{
|
||||
_childPos = -_childSize * page;
|
||||
if (_isVertical)
|
||||
{
|
||||
target.y = _childPos + _scrollStartPosition;
|
||||
}
|
||||
else
|
||||
{
|
||||
target.x = _childPos + _scrollStartPosition;
|
||||
}
|
||||
}
|
||||
|
||||
/// <summary>
|
||||
/// Updates the _Lerp target to the closest page and updates the pagination bullets. Each control's update loop will then handle the move.
|
||||
/// </summary>
|
||||
/// <summary>
|
||||
/// Updates the _Lerp target to the closest page and updates the pagination bullets. Each control's update loop will then handle the move.
|
||||
/// </summary>
|
||||
internal void ScrollToClosestElement()
|
||||
{
|
||||
_lerp = true;
|
||||
CurrentPage = GetPageforPosition(_screensContainer.localPosition);
|
||||
GetPositionforPage(_currentPage, ref _lerp_target);
|
||||
OnCurrentScreenChange(_currentPage);
|
||||
}
|
||||
{
|
||||
_lerp = true;
|
||||
CurrentPage = GetPageforPosition(_screensContainer.localPosition);
|
||||
GetPositionforPage(_currentPage, ref _lerp_target);
|
||||
OnCurrentScreenChange(_currentPage);
|
||||
}
|
||||
|
||||
/// <summary>
|
||||
/// notifies pagination indicator and navigation buttons of a screen change
|
||||
/// </summary>
|
||||
/// <summary>
|
||||
/// notifies pagination indicator and navigation buttons of a screen change
|
||||
/// </summary>
|
||||
internal void OnCurrentScreenChange(int currentScreen)
|
||||
{
|
||||
ChangeBulletsInfo(currentScreen);
|
||||
ToggleNavigationButtons(currentScreen);
|
||||
}
|
||||
{
|
||||
ChangeBulletsInfo(currentScreen);
|
||||
ToggleNavigationButtons(currentScreen);
|
||||
}
|
||||
|
||||
/// <summary>
|
||||
/// changes the bullets on the bottom of the page - pagination
|
||||
/// </summary>
|
||||
/// <param name="targetScreen"></param>
|
||||
/// <summary>
|
||||
/// changes the bullets on the bottom of the page - pagination
|
||||
/// </summary>
|
||||
/// <param name="targetScreen"></param>
|
||||
private void ChangeBulletsInfo(int targetScreen)
|
||||
{
|
||||
if (Pagination)
|
||||
for (int i = 0; i < Pagination.transform.childCount; i++)
|
||||
{
|
||||
Pagination.transform.GetChild(i).GetComponent<Toggle>().isOn = (targetScreen == i)
|
||||
? true
|
||||
{
|
||||
if (Pagination)
|
||||
for (int i = 0; i < Pagination.transform.childCount; i++)
|
||||
{
|
||||
Pagination.transform.GetChild(i).GetComponent<Toggle>().isOn = (targetScreen == i)
|
||||
? true
|
||||
: false;
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
/// <summary>
|
||||
/// disables the page navigation buttons when at the first or last screen
|
||||
/// </summary>
|
||||
/// <param name="targetScreen"></param>
|
||||
/// <summary>
|
||||
/// disables the page navigation buttons when at the first or last screen
|
||||
/// </summary>
|
||||
/// <param name="targetScreen"></param>
|
||||
private void ToggleNavigationButtons(int targetScreen) {
|
||||
if (PrevButton) {
|
||||
PrevButton.GetComponent<Button>().interactable = targetScreen > 0;
|
||||
}
|
||||
if (NextButton) {
|
||||
NextButton.GetComponent<Button>().interactable = targetScreen < _screensContainer.transform.childCount - 1;
|
||||
}
|
||||
}
|
||||
if (PrevButton) {
|
||||
PrevButton.GetComponent<Button>().interactable = targetScreen > 0;
|
||||
}
|
||||
|
||||
private void OnValidate()
|
||||
{
|
||||
var children = gameObject.GetComponent<ScrollRect>().content.childCount;
|
||||
if (children != 0 || ChildObjects != null)
|
||||
{
|
||||
var childCount = ChildObjects == null || ChildObjects.Length == 0 ? children : ChildObjects.Length;
|
||||
if (StartingScreen > childCount - 1)
|
||||
{
|
||||
StartingScreen = childCount - 1;
|
||||
}
|
||||
if (StartingScreen < 0)
|
||||
{
|
||||
StartingScreen = 0;
|
||||
}
|
||||
}
|
||||
if (MaskBuffer <= 0)
|
||||
{
|
||||
MaskBuffer = 1;
|
||||
}
|
||||
if (PageStep < 0)
|
||||
{
|
||||
PageStep = 0;
|
||||
}
|
||||
if (PageStep > 8)
|
||||
{
|
||||
PageStep = 9;
|
||||
}
|
||||
}
|
||||
if (NextButton) {
|
||||
NextButton.GetComponent<Button>().interactable = targetScreen < _screensContainer.transform.childCount - 1;
|
||||
}
|
||||
}
|
||||
|
||||
/// <summary>
|
||||
/// Event fires when the user starts to change the page, either via swipe or button.
|
||||
/// </summary>
|
||||
private void OnValidate()
|
||||
{
|
||||
var children = gameObject.GetComponent<ScrollRect>().content.childCount;
|
||||
if (children != 0 || ChildObjects != null)
|
||||
{
|
||||
var childCount = ChildObjects == null || ChildObjects.Length == 0 ? children : ChildObjects.Length;
|
||||
if (StartingScreen > childCount - 1)
|
||||
{
|
||||
StartingScreen = childCount - 1;
|
||||
}
|
||||
|
||||
if (StartingScreen < 0)
|
||||
{
|
||||
StartingScreen = 0;
|
||||
}
|
||||
}
|
||||
|
||||
if (MaskBuffer <= 0)
|
||||
{
|
||||
MaskBuffer = 1;
|
||||
}
|
||||
|
||||
if (PageStep < 0)
|
||||
{
|
||||
PageStep = 0;
|
||||
}
|
||||
|
||||
if (PageStep > 8)
|
||||
{
|
||||
PageStep = 9;
|
||||
}
|
||||
}
|
||||
|
||||
/// <summary>
|
||||
/// Event fires when the user starts to change the page, either via swipe or button.
|
||||
/// </summary>
|
||||
internal void StartScreenChange()
|
||||
{
|
||||
OnSelectionChangeStartEvent.Invoke();
|
||||
}
|
||||
{
|
||||
OnSelectionChangeStartEvent.Invoke();
|
||||
}
|
||||
|
||||
/// <summary>
|
||||
/// Event fires when the currently viewed page changes, also updates while the scroll is moving
|
||||
/// </summary>
|
||||
/// <summary>
|
||||
/// Event fires when the currently viewed page changes, also updates while the scroll is moving
|
||||
/// </summary>
|
||||
internal void ScreenChange()
|
||||
{
|
||||
OnSelectionPageChangedEvent.Invoke(_currentPage);
|
||||
}
|
||||
{
|
||||
OnSelectionPageChangedEvent.Invoke(_currentPage);
|
||||
}
|
||||
|
||||
/// <summary>
|
||||
/// Event fires when control settles on a page, outputs the new page number
|
||||
/// </summary>
|
||||
/// <summary>
|
||||
/// Event fires when control settles on a page, outputs the new page number
|
||||
/// </summary>
|
||||
internal void EndScreenChange()
|
||||
{
|
||||
OnSelectionChangeEndEvent.Invoke(_currentPage);
|
||||
_settled = true;
|
||||
}
|
||||
{
|
||||
OnSelectionChangeEndEvent.Invoke(_currentPage);
|
||||
_settled = true;
|
||||
}
|
||||
|
||||
#region Interfaces
|
||||
/// <summary>
|
||||
/// Touch screen to start swiping
|
||||
/// </summary>
|
||||
/// <param name="eventData"></param>
|
||||
#region Interfaces
|
||||
/// <summary>
|
||||
/// Touch screen to start swiping
|
||||
/// </summary>
|
||||
/// <param name="eventData"></param>
|
||||
public void OnBeginDrag(PointerEventData eventData)
|
||||
{
|
||||
_pointerDown = true;
|
||||
_settled = false;
|
||||
StartScreenChange();
|
||||
_startPosition = _screensContainer.localPosition;
|
||||
}
|
||||
{
|
||||
_pointerDown = true;
|
||||
_settled = false;
|
||||
StartScreenChange();
|
||||
_startPosition = _screensContainer.localPosition;
|
||||
}
|
||||
|
||||
/// <summary>
|
||||
/// While dragging do
|
||||
/// </summary>
|
||||
/// <param name="eventData"></param>
|
||||
/// <summary>
|
||||
/// While dragging do
|
||||
/// </summary>
|
||||
/// <param name="eventData"></param>
|
||||
public void OnDrag(PointerEventData eventData)
|
||||
{
|
||||
_lerp = false;
|
||||
}
|
||||
{
|
||||
_lerp = false;
|
||||
}
|
||||
|
||||
#endregion
|
||||
}
|
||||
#endregion
|
||||
}
|
||||
}
|
||||
Loading…
Reference in New Issue