Files
Main/Assets/Launcher/ExternalLibs/NGUI/Scripts/Interaction/UIImageButton.cs
2025-01-25 04:38:09 +08:00

95 lines
2.1 KiB
C#

//----------------------------------------------
// NGUI: Next-Gen UI kit
// Copyright © 2011-2015 Tasharen Entertainment
//----------------------------------------------
using UnityEngine;
/// <summary>
/// Sample script showing how easy it is to implement a standard button that swaps sprites.
/// </summary>
[AddComponentMenu("NGUI/UI/Image Button")]
public class UIImageButton : MonoBehaviour
{
public UISprite target;
public string normalSprite;
public string hoverSprite;
public string pressedSprite;
public string disabledSprite;
public bool pixelSnap = true;
public bool isEnabled
{
get
{
#if UNITY_4_3 || UNITY_4_5 || UNITY_4_6 || UNITY_4_7
Collider col = collider;
#else
Collider col = gameObject.GetComponent<Collider>();
#endif
return col && col.enabled;
}
set
{
#if UNITY_4_3 || UNITY_4_5 || UNITY_4_6 || UNITY_4_7
Collider col = collider;
#else
Collider col = gameObject.GetComponent<Collider>();
#endif
if (!col) return;
if (col.enabled != value)
{
col.enabled = value;
UpdateImage();
}
}
}
void OnEnable ()
{
if (target == null) target = GetComponentInChildren<UISprite>();
UpdateImage();
}
void OnValidate ()
{
if (target != null)
{
if (string.IsNullOrEmpty(normalSprite)) normalSprite = target.spriteName;
if (string.IsNullOrEmpty(hoverSprite)) hoverSprite = target.spriteName;
if (string.IsNullOrEmpty(pressedSprite)) pressedSprite = target.spriteName;
if (string.IsNullOrEmpty(disabledSprite)) disabledSprite = target.spriteName;
}
}
void UpdateImage()
{
if (target != null)
{
if (isEnabled) SetSprite(UICamera.IsHighlighted(gameObject) ? hoverSprite : normalSprite);
else SetSprite(disabledSprite);
}
}
void OnHover (bool isOver)
{
if (isEnabled && target != null)
SetSprite(isOver ? hoverSprite : normalSprite);
}
void OnPress (bool pressed)
{
if (pressed) SetSprite(pressedSprite);
else UpdateImage();
}
void SetSprite (string sprite)
{
if (target.atlas == null || target.atlas.GetSprite(sprite) == null) return;
target.spriteName = sprite;
if (pixelSnap) target.MakePixelPerfect();
}
}