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ButtonInteractableControl.cs
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86 lines (74 loc) · 1.84 KB
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// Copyright 2014 Invex Games http://invexgames.com
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at http://www.apache.org/licenses/LICENSE-2.0
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
using UnityEngine;
using UnityEngine.UI;
namespace MaterialUI
{
[ExecuteInEditMode]
[RequireComponent(typeof (CanvasGroup))]
public class ButtonInteractableControl : MonoBehaviour
{
private CanvasGroup canvasGroup;
private Button button;
private CanvasGroup CanvasGroup
{
get
{
if (canvasGroup == null)
{
canvasGroup = gameObject.GetComponent<CanvasGroup>();
}
return canvasGroup;
}
}
private Button Button
{
get
{
if (button == null)
{
button = gameObject.GetComponent<Button>();
}
return button;
}
}
private bool lastInteractableState;
[SerializeField] private CanvasGroup shadows;
private void OnEnable()
{
UpdateInteractableState(Button.interactable);
}
void Update()
{
if (lastInteractableState != Button.interactable)
{
UpdateInteractableState(Button.interactable);
}
}
private void UpdateInteractableState(bool interactable)
{
lastInteractableState = interactable;
if (lastInteractableState)
{
CanvasGroup.alpha = 1f;
CanvasGroup.blocksRaycasts = true;
if (shadows)
shadows.alpha = 1f;
}
else
{
CanvasGroup.alpha = 0.5f;
CanvasGroup.blocksRaycasts = false;
if (shadows)
shadows.alpha = 0f;
}
}
}
}