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Assets/CoolapeFrame/3rd/NGUI_Enhance/Scripts/Interaction/UISlider.cs

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+//----------------------------------------------
+//            NGUI: Next-Gen UI kit
+// Copyright © 2011-2015 Tasharen Entertainment
+//----------------------------------------------
+
+using UnityEngine;
+using System.Collections.Generic;
+
+/// <summary>
+/// Extended progress bar that has backwards compatibility logic and adds interaction support.
+/// </summary>
+
+[ExecuteInEditMode]
+[AddComponentMenu("NGUI/Interaction/NGUI Slider")]
+public class UISlider : UIProgressBar
+{
+	enum Direction
+	{
+		Horizontal,
+		Vertical,
+		Upgraded,
+	}
+
+	// Deprecated functionality. Use 'foregroundWidget' instead.
+	[HideInInspector][SerializeField] Transform foreground = null;
+
+	// Deprecated functionality
+	[HideInInspector][SerializeField] float rawValue = 1f; // Use 'value'
+	[HideInInspector][SerializeField] Direction direction = Direction.Upgraded; // Use 'fillDirection'
+	[HideInInspector][SerializeField] protected bool mInverted = false;
+
+	[System.Obsolete("Use 'value' instead")]
+	public float sliderValue { get { return this.value; } set { this.value = value; } }
+
+	[System.Obsolete("Use 'fillDirection' instead")]
+	public bool inverted { get { return isInverted; } set { } }
+
+	/// <summary>
+	/// Upgrade from legacy functionality.
+	/// </summary>
+
+	protected override void Upgrade ()
+	{
+		if (direction != Direction.Upgraded)
+		{
+			mValue = rawValue;
+
+			if (foreground != null)
+				mFG = foreground.GetComponent<UIWidget>();
+
+			if (direction == Direction.Horizontal)
+			{
+				mFill = mInverted ? FillDirection.RightToLeft : FillDirection.LeftToRight;
+			}
+			else
+			{
+				mFill = mInverted ? FillDirection.TopToBottom : FillDirection.BottomToTop;
+			}
+			direction = Direction.Upgraded;
+#if UNITY_EDITOR
+			NGUITools.SetDirty(this);
+#endif
+		}
+	}
+
+	/// <summary>
+	/// Register an event listener.
+	/// </summary>
+
+	protected override void OnStart ()
+	{
+#if UNITY_4_3 || UNITY_4_5 || UNITY_4_6
+				GameObject bg = (mBG != null && (mBG.collider != null || mBG.GetComponent<Collider2D>() != null)) ? mBG.gameObject : gameObject;
+		UIEventListener bgl = UIEventListener.Get(bg);
+		bgl.onPress += OnPressBackground;
+		bgl.onDrag += OnDragBackground;
+
+		if (thumb != null && (thumb.collider != null || thumb.GetComponent<Collider2D>() != null) && (mFG == null || thumb != mFG.cachedTransform))
+#else
+		GameObject bg = (mBG != null && (mBG.GetComponent<Collider>() != null || mBG.GetComponent<Collider2D>() != null)) ? mBG.gameObject : gameObject;
+		UIEventListener bgl = UIEventListener.Get(bg);
+		bgl.onPress += OnPressBackground;
+		bgl.onDrag += OnDragBackground;
+
+		if (thumb != null && (thumb.GetComponent<Collider>() != null || thumb.GetComponent<Collider2D>() != null) && (mFG == null || thumb != mFG.cachedTransform))
+#endif
+		{
+			UIEventListener fgl = UIEventListener.Get(thumb.gameObject);
+			fgl.onPress += OnPressForeground;
+			fgl.onDrag += OnDragForeground;
+		}
+	}
+
+	/// <summary>
+	/// Position the scroll bar to be under the current touch.
+	/// </summary>
+
+	protected void OnPressBackground (GameObject go, bool isPressed)
+	{
+		if (UICamera.currentScheme == UICamera.ControlScheme.Controller) return;
+		mCam = UICamera.currentCamera;
+		value = ScreenToValue(UICamera.lastTouchPosition);
+		if (!isPressed && onDragFinished != null) onDragFinished();
+	}
+
+	/// <summary>
+	/// Position the scroll bar to be under the current touch.
+	/// </summary>
+
+	protected void OnDragBackground (GameObject go, Vector2 delta)
+	{
+		if (UICamera.currentScheme == UICamera.ControlScheme.Controller) return;
+		mCam = UICamera.currentCamera;
+		value = ScreenToValue(UICamera.lastTouchPosition);
+	}
+
+	/// <summary>
+	/// Save the position of the foreground on press.
+	/// </summary>
+
+	protected void OnPressForeground (GameObject go, bool isPressed)
+	{
+		if (UICamera.currentScheme == UICamera.ControlScheme.Controller) return;
+		mCam = UICamera.currentCamera;
+
+		if (isPressed)
+		{
+			mOffset = (mFG == null) ? 0f :
+				value - ScreenToValue(UICamera.lastTouchPosition);
+		}
+		else if (onDragFinished != null) onDragFinished();
+	}
+
+	/// <summary>
+	/// Drag the scroll bar in the specified direction.
+	/// </summary>
+
+	protected void OnDragForeground (GameObject go, Vector2 delta)
+	{
+		if (UICamera.currentScheme == UICamera.ControlScheme.Controller) return;
+		mCam = UICamera.currentCamera;
+		value = mOffset + ScreenToValue(UICamera.lastTouchPosition);
+	}
+
+	/// <summary>
+	/// Watch for key events and adjust the value accordingly.
+	/// </summary>
+
+	protected void OnKey (KeyCode key)
+	{
+		if (enabled)
+		{
+			float step = (numberOfSteps > 1f) ? 1f / (numberOfSteps - 1) : 0.125f;
+
+			switch (mFill)
+			{
+				case FillDirection.LeftToRight:
+				{
+					if (key == KeyCode.LeftArrow) value = mValue - step;
+					else if (key == KeyCode.RightArrow) value = mValue + step;
+				}
+				break;
+
+				case FillDirection.RightToLeft:
+				{
+					if (key == KeyCode.LeftArrow) value = mValue + step;
+					else if (key == KeyCode.RightArrow) value = mValue - step;
+				}
+				break;
+
+				case FillDirection.BottomToTop:
+				{
+					if (key == KeyCode.DownArrow) value = mValue - step;
+					else if (key == KeyCode.UpArrow) value = mValue + step;
+				}
+				break;
+
+				case FillDirection.TopToBottom:
+				{
+					if (key == KeyCode.DownArrow) value = mValue + step;
+					else if (key == KeyCode.UpArrow) value = mValue - step;
+				}
+				break;
+			}
+		}
+	}
+}