69 lines
2.0 KiB
C#
69 lines
2.0 KiB
C#
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using UnityEngine;
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using UnityEngine.Events;
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using UnityEngine.EventSystems;
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namespace QFSW.QC.UI
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{
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[DisallowMultipleComponent]
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[RequireComponent(typeof(RectTransform))]
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public class DraggableUI : MonoBehaviour, IPointerDownHandler, IPointerUpHandler
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{
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[SerializeField] private RectTransform _dragRoot = null;
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[SerializeField] private QuantumConsole _quantumConsole = null;
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[SerializeField] private bool _lockInScreen = true;
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[SerializeField] private UnityEvent _onBeginDrag = null;
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[SerializeField] private UnityEvent _onDrag = null;
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[SerializeField] private UnityEvent _onEndDrag = null;
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private Vector2 _lastPos;
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private bool _isDragging = false;
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public void OnPointerDown(PointerEventData eventData)
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{
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_isDragging =
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_quantumConsole &&
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_quantumConsole.KeyConfig &&
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_quantumConsole.KeyConfig.DragConsoleKey.IsHeld();
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if (_isDragging)
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{
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_onBeginDrag.Invoke();
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_lastPos = eventData.position;
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}
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}
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public void LateUpdate()
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{
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if (_isDragging)
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{
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Transform root = _dragRoot;
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if (!root) { root = transform as RectTransform; }
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Vector2 pos = Input.mousePosition;
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Vector2 delta = pos - _lastPos;
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_lastPos = pos;
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if (_lockInScreen)
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{
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Vector2 resolution = new Vector2(Screen.width, Screen.height);
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if (pos.x <= 0 || pos.x >= resolution.x) { delta.x = 0; }
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if (pos.y <= 0 || pos.y >= resolution.y) { delta.y = 0; }
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}
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root.Translate(delta);
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_onDrag.Invoke();
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}
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}
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public void OnPointerUp(PointerEventData eventData)
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{
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if (_isDragging)
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{
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_isDragging = false;
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_onEndDrag.Invoke();
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}
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}
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}
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}
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