63 lines
1.6 KiB
C#
63 lines
1.6 KiB
C#
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using System.Collections;
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using System.Collections.Generic;
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using UnityEngine;
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using UnityEngine.UI;
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namespace NeoFPS.Samples
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{
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[HelpURL("http://docs.neofps.com/manual/samples-ui.html")]
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public class MultiInputWidgetScrollViewLayout : MultiInputWidgetLayout
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{
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ScrollRect m_ScrollRect = null;
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private Vector3[] m_Corners = new Vector3[4];
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protected override void Awake ()
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{
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base.Awake ();
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m_ScrollRect = GetComponent<ScrollRect> ();
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}
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public override void OnWidgetSelected (MultiInputWidget widget)
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{
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base.OnWidgetSelected (widget);
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// Check if content is large enough to require scrolling
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RectTransform rt = transform as RectTransform;
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RectTransform ct = m_ScrollRect.content;
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float contentHeight = ct.rect.height;
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if (contentHeight > rt.rect.height)
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{
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// Check if widget is within visible scroll area
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RectTransform wt = (RectTransform)widget.transform;
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rt.GetWorldCorners (m_Corners);
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float worldBottom = m_Corners [0].y;
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float worldTop = m_Corners [1].y;
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float worldHeight = worldTop - worldBottom;
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wt.GetWorldCorners (m_Corners);
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contentHeight *= ct.lossyScale.y;
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float multiplier = 1f / (contentHeight - worldHeight);
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// Check if off bottom of scroll rect
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if (m_Corners [0].y < worldBottom)
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{
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float diff = worldBottom - m_Corners [0].y;
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m_ScrollRect.verticalNormalizedPosition -= diff * multiplier;
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}
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else
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{
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// Check if off top of scroll rect
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if (m_Corners [1].y > worldTop)
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{
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float diff = m_Corners [1].y - worldTop;
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m_ScrollRect.verticalNormalizedPosition += diff * multiplier;
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}
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}
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}
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}
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}
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}
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