using System;

namespace UnityEngine.Experimental.UIElements
{
	// Token: 0x02000346 RID: 838
	public class ScrollView : VisualContainer
	{
		// Token: 0x060033B4 RID: 13236 RVA: 0x000516DC File Offset: 0x0004F8DC
		public ScrollView()
			: this(ScrollView.kDefaultScrollerValues, ScrollView.kDefaultScrollerValues)
		{
		}

		// Token: 0x060033B5 RID: 13237 RVA: 0x000516F0 File Offset: 0x0004F8F0
		public ScrollView(Vector2 horizontalScrollerValues, Vector2 verticalScrollerValues)
		{
			this.horizontalScrollerValues = horizontalScrollerValues;
			this.verticalScrollerValues = verticalScrollerValues;
			this.contentView = new VisualContainer
			{
				name = "ContentView"
			};
			this.contentViewport = new VisualContainer
			{
				name = "ContentViewport"
			};
			this.contentViewport.clipChildren = true;
			this.contentViewport.AddChild(this.contentView);
			base.AddChild(this.contentViewport);
			this.horizontalScroller = new Scroller(horizontalScrollerValues.x, horizontalScrollerValues.y, delegate(float value)
			{
				this.scrollOffset = new Vector2(value, this.scrollOffset.y);
			}, Slider.Direction.Horizontal)
			{
				name = "HorizontalScroller"
			};
			base.AddChild(this.horizontalScroller);
			this.verticalScroller = new Scroller(verticalScrollerValues.x, verticalScrollerValues.y, delegate(float value)
			{
				this.scrollOffset = new Vector2(this.scrollOffset.x, value);
			}, Slider.Direction.Vertical)
			{
				name = "VerticalScroller"
			};
			base.AddChild(this.verticalScroller);
		}

		// Token: 0x17000BC0 RID: 3008
		// (get) Token: 0x060033B6 RID: 13238 RVA: 0x000517EC File Offset: 0x0004F9EC
		// (set) Token: 0x060033B7 RID: 13239 RVA: 0x00051808 File Offset: 0x0004FA08
		public Vector2 horizontalScrollerValues { get; set; }

		// Token: 0x17000BC1 RID: 3009
		// (get) Token: 0x060033B8 RID: 13240 RVA: 0x00051814 File Offset: 0x0004FA14
		// (set) Token: 0x060033B9 RID: 13241 RVA: 0x00051830 File Offset: 0x0004FA30
		public Vector2 verticalScrollerValues { get; set; }

		// Token: 0x17000BC2 RID: 3010
		// (get) Token: 0x060033BA RID: 13242 RVA: 0x0005183C File Offset: 0x0004FA3C
		// (set) Token: 0x060033BB RID: 13243 RVA: 0x00051858 File Offset: 0x0004FA58
		public bool showHorizontal { get; set; }

		// Token: 0x17000BC3 RID: 3011
		// (get) Token: 0x060033BC RID: 13244 RVA: 0x00051864 File Offset: 0x0004FA64
		// (set) Token: 0x060033BD RID: 13245 RVA: 0x00051880 File Offset: 0x0004FA80
		public bool showVertical { get; set; }

		// Token: 0x17000BC4 RID: 3012
		// (get) Token: 0x060033BE RID: 13246 RVA: 0x0005188C File Offset: 0x0004FA8C
		public bool needsHorizontal
		{
			get
			{
				return this.showHorizontal || this.contentView.position.width - base.position.width > 0f;
			}
		}

		// Token: 0x17000BC5 RID: 3013
		// (get) Token: 0x060033BF RID: 13247 RVA: 0x000518D8 File Offset: 0x0004FAD8
		public bool needsVertical
		{
			get
			{
				return this.showVertical || this.contentView.position.height - base.position.height > 0f;
			}
		}

		// Token: 0x17000BC6 RID: 3014
		// (get) Token: 0x060033C0 RID: 13248 RVA: 0x00051924 File Offset: 0x0004FB24
		// (set) Token: 0x060033C1 RID: 13249 RVA: 0x00051940 File Offset: 0x0004FB40
		public Vector2 scrollOffset
		{
			get
			{
				return this.m_ScrollOffset;
			}
			set
			{
				this.m_ScrollOffset = value;
				this.UpdateContentViewTransform();
			}
		}

		// Token: 0x060033C2 RID: 13250 RVA: 0x00051950 File Offset: 0x0004FB50
		private void UpdateContentViewTransform()
		{
			Vector2 scrollOffset = this.m_ScrollOffset;
			scrollOffset.x -= this.horizontalScroller.lowValue;
			scrollOffset.x /= this.horizontalScroller.highValue - this.horizontalScroller.lowValue;
			scrollOffset.y -= this.verticalScroller.lowValue;
			scrollOffset.y /= this.verticalScroller.highValue - this.verticalScroller.lowValue;
			float num = this.contentView.position.width - this.contentViewport.position.width;
			float num2 = this.contentView.position.height - this.contentViewport.position.height;
			Matrix4x4 transform = this.contentView.transform;
			transform.m03 = -(scrollOffset.x * num);
			transform.m13 = -(scrollOffset.y * num2);
			this.contentView.transform = transform;
			base.Dirty(ChangeType.Repaint);
		}

		// Token: 0x17000BC7 RID: 3015
		// (get) Token: 0x060033C3 RID: 13251 RVA: 0x00051A78 File Offset: 0x0004FC78
		// (set) Token: 0x060033C4 RID: 13252 RVA: 0x00051A94 File Offset: 0x0004FC94
		public VisualContainer contentView { get; private set; }

		// Token: 0x17000BC8 RID: 3016
		// (get) Token: 0x060033C5 RID: 13253 RVA: 0x00051AA0 File Offset: 0x0004FCA0
		// (set) Token: 0x060033C6 RID: 13254 RVA: 0x00051ABC File Offset: 0x0004FCBC
		public VisualContainer contentViewport { get; private set; }

		// Token: 0x17000BC9 RID: 3017
		// (get) Token: 0x060033C7 RID: 13255 RVA: 0x00051AC8 File Offset: 0x0004FCC8
		// (set) Token: 0x060033C8 RID: 13256 RVA: 0x00051AE4 File Offset: 0x0004FCE4
		public Scroller horizontalScroller { get; private set; }

		// Token: 0x17000BCA RID: 3018
		// (get) Token: 0x060033C9 RID: 13257 RVA: 0x00051AF0 File Offset: 0x0004FCF0
		// (set) Token: 0x060033CA RID: 13258 RVA: 0x00051B0C File Offset: 0x0004FD0C
		public Scroller verticalScroller { get; private set; }

		// Token: 0x060033CB RID: 13259 RVA: 0x00051B18 File Offset: 0x0004FD18
		protected internal override void OnPostLayout(bool hasNewLayout)
		{
			if (hasNewLayout)
			{
				if (this.contentView.position.width > Mathf.Epsilon)
				{
					this.horizontalScroller.Adjust(this.contentViewport.position.width / this.contentView.position.width);
				}
				if (this.contentView.position.height > Mathf.Epsilon)
				{
					this.verticalScroller.Adjust(this.contentViewport.position.height / this.contentView.position.height);
				}
				this.horizontalScroller.enabled = this.contentView.position.width - base.position.width > 0f;
				this.verticalScroller.enabled = this.contentView.position.height - base.position.height > 0f;
				this.horizontalScroller.visible = this.needsHorizontal;
				this.verticalScroller.visible = this.needsVertical;
				this.UpdateContentViewTransform();
			}
		}

		// Token: 0x060033CC RID: 13260 RVA: 0x00051C68 File Offset: 0x0004FE68
		public override EventPropagation HandleEvent(Event evt, VisualElement finalTarget)
		{
			EventType type = evt.type;
			EventPropagation eventPropagation;
			if (type != EventType.ScrollWheel)
			{
				eventPropagation = EventPropagation.Continue;
			}
			else
			{
				if (this.contentView.position.height - base.position.height > 0f)
				{
					if (evt.delta.y < 0f)
					{
						this.verticalScroller.ScrollPageUp();
					}
					else if (evt.delta.y > 0f)
					{
						this.verticalScroller.ScrollPageDown();
					}
				}
				eventPropagation = EventPropagation.Stop;
			}
			return eventPropagation;
		}

		// Token: 0x04000AB7 RID: 2743
		public static readonly Vector2 kDefaultScrollerValues = new Vector2(0f, 100f);

		// Token: 0x04000ABA RID: 2746
		private Vector2 m_ScrollOffset;
	}
}