103 lines
2.6 KiB
C#
103 lines
2.6 KiB
C#
/// Credit David Gileadi
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/// Sourced from - https://bitbucket.org/UnityUIExtensions/unity-ui-extensions/pull-requests/11
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using System;
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using UnityEngine.Events;
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using UnityEngine.EventSystems;
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namespace UnityEngine.UI.Extensions
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{
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[RequireComponent(typeof(Selectable))]
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public class StepperSide :
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UIBehaviour,
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IPointerClickHandler,
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ISubmitHandler,
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IPointerEnterHandler, IPointerExitHandler,
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IPointerDownHandler, IPointerUpHandler,
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ISelectHandler, IDeselectHandler
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{
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Selectable button { get { return GetComponent<Selectable>(); } }
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Stepper stepper { get { return GetComponentInParent<Stepper>(); } }
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bool leftmost { get { return button == stepper.sides[0]; } }
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internal Sprite cutSprite;
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protected StepperSide()
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{ }
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public virtual void OnPointerClick(PointerEventData eventData)
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{
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if (eventData.button != PointerEventData.InputButton.Left)
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return;
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Press();
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AdjustSprite(false);
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}
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public virtual void OnSubmit(BaseEventData eventData)
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{
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Press();
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AdjustSprite(true);
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}
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public virtual void OnPointerEnter(PointerEventData eventData)
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{
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AdjustSprite(false);
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}
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public virtual void OnPointerExit(PointerEventData eventData)
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{
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AdjustSprite(true);
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}
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public virtual void OnPointerDown(PointerEventData eventData)
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{
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AdjustSprite(false);
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}
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public virtual void OnPointerUp(PointerEventData eventData)
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{
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AdjustSprite(false);
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}
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public virtual void OnSelect(BaseEventData eventData)
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{
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AdjustSprite(false);
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}
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public virtual void OnDeselect(BaseEventData eventData)
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{
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AdjustSprite(true);
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}
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private void Press()
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{
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if (!button.IsActive() || !button.IsInteractable())
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return;
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if (leftmost)
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{
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stepper.StepDown();
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}
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else
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{
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stepper.StepUp();
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}
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}
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private void AdjustSprite(bool restore)
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{
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var image = button.image;
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if (!image || image.overrideSprite == cutSprite)
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return;
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if (restore)
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image.overrideSprite = cutSprite;
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else
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image.overrideSprite = Stepper.CutSprite(image.overrideSprite, leftmost);
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}
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}
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} |