135 lines
4.7 KiB
C#
135 lines
4.7 KiB
C#
using System.Collections.Generic;
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using UnityEditor.U2D.Animation;
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using UnityEngine;
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using UnityEngine.UIElements;
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namespace UnityEditor.U2D.Layout
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{
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internal class ScrollableToolbar : VisualElement
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{
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public class ScrollableToolbarFactory : UxmlFactory<ScrollableToolbar, ScrollableToolbarUxmlTraits> {}
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public class ScrollableToolbarUxmlTraits : UxmlTraits
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{
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UxmlBoolAttributeDescription m_IsHorizontal;
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public ScrollableToolbarUxmlTraits()
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{
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m_IsHorizontal = new UxmlBoolAttributeDescription { name = "isHorizontal" };
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}
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public override IEnumerable<UxmlChildElementDescription> uxmlChildElementsDescription
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{
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get { yield break; }
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}
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public override void Init(VisualElement ve, IUxmlAttributes bag, CreationContext cc)
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{
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base.Init(ve, bag, cc);
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ScrollableToolbar toolbar = ((ScrollableToolbar)ve);
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toolbar.isHorizontal = m_IsHorizontal.GetValueFromBag(bag, cc);
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}
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}
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private ScrollView m_ScrollView;
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private bool m_IsHorizontal;
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public bool isHorizontal
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{
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get { return m_IsHorizontal; }
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set
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{
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if (m_IsHorizontal != value)
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{
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m_IsHorizontal = value;
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SetupScrolling();
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}
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}
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}
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public ScrollableToolbar() : this(false)
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{
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}
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public ScrollableToolbar(bool isHorizontal)
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{
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m_ScrollView = new ScrollView() {name = "ScrollView"};;
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m_ScrollView.StretchToParentSize();
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hierarchy.Add(m_ScrollView);
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m_IsHorizontal = isHorizontal;
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SetupScrolling();
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styleSheets.Add(ResourceLoader.Load<StyleSheet>("LayoutOverlay/ScrollableToolbar.uss"));
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// TODO: Add onto current ScrollView internal WheelEvent
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m_ScrollView.RegisterCallback<WheelEvent>(OnScrollWheel);
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pickingMode = PickingMode.Ignore;
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m_ScrollView.pickingMode = PickingMode.Ignore;
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m_ScrollView.contentViewport.pickingMode = PickingMode.Ignore;
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m_ScrollView.contentContainer.pickingMode = PickingMode.Ignore;
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}
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public void AddToContainer(VisualElement element)
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{
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m_ScrollView.contentContainer.Add(element);
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}
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public void Collapse(bool collapse)
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{
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if (collapse)
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AddToClassList("Collapse");
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else
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RemoveFromClassList("Collapse");
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}
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private void SetupScrolling()
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{
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if (isHorizontal)
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{
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m_ScrollView.style.flexDirection = FlexDirection.Row;
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m_ScrollView.contentViewport.style.marginLeft = 10;
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m_ScrollView.contentViewport.style.marginRight = 10;
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m_ScrollView.contentViewport.style.marginTop = 0;
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m_ScrollView.contentViewport.style.marginBottom = 0;
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m_ScrollView.contentContainer.style.flexDirection = FlexDirection.Row;
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m_ScrollView.contentContainer.style.flexGrow = 1f;
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}
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else
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{
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m_ScrollView.style.flexDirection = FlexDirection.Column;
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m_ScrollView.contentViewport.style.marginLeft = 0;
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m_ScrollView.contentViewport.style.marginRight = 0;
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m_ScrollView.contentViewport.style.marginTop = 10;
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m_ScrollView.contentViewport.style.marginBottom = 10;
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m_ScrollView.contentContainer.style.flexDirection = FlexDirection.Column;
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m_ScrollView.contentContainer.style.flexGrow = 1f;
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}
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}
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void OnScrollWheel(WheelEvent evt)
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{
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/*
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// Handled by ScrollView
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if (!isHorizontal && m_ScrollView.contentContainer.layout.height - layout.height > 0)
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{
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if (evt.delta.y < 0)
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m_ScrollView.verticalScroller.ScrollPageUp();
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else if (evt.delta.y > 0)
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m_ScrollView.verticalScroller.ScrollPageDown();
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}
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*/
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if (isHorizontal && m_ScrollView.contentContainer.layout.width - layout.width > 0)
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{
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// TODO: Does not provide delta.x for sidescrolling mouse wheel. Use delta.y for now.
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if (evt.delta.y < 0)
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m_ScrollView.horizontalScroller.ScrollPageUp();
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else if (evt.delta.y > 0)
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m_ScrollView.horizontalScroller.ScrollPageDown();
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}
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evt.StopPropagation();
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}
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}
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}
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