forked from BilalY/Rasagar
102 lines
4.0 KiB
C#
102 lines
4.0 KiB
C#
using UnityEngine;
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using UnityEngine.UI;
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using UnityEngine.TestTools;
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using NUnit.Framework;
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using System.Collections;
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public class ScrollRectClamp
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{
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// Prefab has the following hierarchy:
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// - PrefabRoot
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// - Canvas
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// - Root
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// - Scroll View
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// - Content
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// - Scrollbar
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GameObject m_PrefabRoot;
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RectTransform Root { get; set; }
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ScrollRect Scroll { get; set; }
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RectTransform ScrollTransform { get; set; }
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RectTransform Content { get; set; }
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float ScrollSizeY { get { return ScrollTransform.rect.size.y; } }
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float ContentSizeY { get { return Content.rect.size.y; } }
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[SetUp]
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public void Setup()
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{
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// We setup the ScrollRect so that it will vertically resize with the Root object, to simulate
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// a change in screen size
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m_PrefabRoot = new GameObject("ScrollRectClamp");
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GameObject CanvasGO = new GameObject("Canvas");
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CanvasGO.transform.SetParent(m_PrefabRoot.transform);
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GameObject RootGO = new GameObject("Root", typeof(RectTransform));
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RootGO.transform.SetParent(CanvasGO.transform);
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Root = RootGO.GetComponent<RectTransform>();
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Root.pivot = Root.anchorMin = Root.anchorMax = new Vector2(0.5f, 0.5f);
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Root.sizeDelta = new Vector2(150.0f, 200.0f);
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GameObject ScrollViewGO = new GameObject("Scroll View", typeof(RectTransform), typeof(ScrollRect), typeof(Image));
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ScrollViewGO.transform.SetParent(Root);
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Scroll = ScrollViewGO.GetComponent<ScrollRect>();
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ScrollTransform = ScrollViewGO.GetComponent<RectTransform>();
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Scroll.viewport = ScrollTransform;
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Scroll.movementType = ScrollRect.MovementType.Clamped;
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Scroll.verticalScrollbarVisibility = ScrollRect.ScrollbarVisibility.AutoHide;
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ScrollTransform.pivot = ScrollTransform.anchorMax = new Vector2(0.0f, 1.0f);
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ScrollTransform.anchorMin = Vector2.zero;
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ScrollTransform.sizeDelta = new Vector2(150.0f, 0.0f);
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ScrollTransform.localPosition = Vector3.zero;
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GameObject ContentGO = new GameObject("Content", typeof(RectTransform));
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Content = ContentGO.GetComponent<RectTransform>();
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Content.SetParent(ScrollTransform);
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Scroll.content = Content;
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Content.pivot = Content.anchorMin = new Vector2(0.0f, 1.0f);
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Content.anchorMax = new Vector2(1.0f, 1.0f);
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Content.sizeDelta = new Vector2(0.0f, 300.0f);
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Content.anchoredPosition = Vector2.zero;
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GameObject ScrollbarGO = new GameObject("Scrollbar", typeof(RectTransform), typeof(Image), typeof(Scrollbar));
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ScrollbarGO.transform.SetParent(ScrollTransform);
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Scroll.verticalScrollbar = ScrollbarGO.GetComponent<Scrollbar>();
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}
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[TearDown]
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public void TearDown()
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{
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Object.DestroyImmediate(m_PrefabRoot);
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}
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[UnityTest]
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public IEnumerator ScrollRect_CorrectClampOnResize()
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{
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Assert.IsNotNull(Scroll.verticalScrollbar);
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Scroll.verticalNormalizedPosition = 1.0f;
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yield return null;
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Assert.IsTrue(Mathf.Approximately(0.0f, Content.anchoredPosition.y));
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Scroll.verticalNormalizedPosition = 0.0f;
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yield return null;
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// The content is vertically bigger than the viewport.
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Assert.IsTrue(Mathf.Approximately(Content.anchoredPosition.y, ContentSizeY - ScrollSizeY));
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// Resizing the root will resize the viewport accordingly.
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Root.sizeDelta = new Vector2(150.0f, 300.0f);
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yield return null;
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// The content is vertically the same size as the viewport
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Assert.IsTrue(Mathf.Approximately(ContentSizeY, ScrollSizeY));
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Assert.False(Scroll.verticalScrollbar.gameObject.activeSelf);
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Assert.IsTrue(Mathf.Approximately(0.0f, Scroll.verticalNormalizedPosition));
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Assert.IsTrue(Mathf.Approximately(0.0f, Content.anchoredPosition.y));
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Root.sizeDelta = new Vector2(150.0f, 200.0f);
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yield return null;
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Assert.IsTrue(Mathf.Approximately(1.0f, Scroll.verticalNormalizedPosition));
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}
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}
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