106 lines
3.3 KiB
C#
106 lines
3.3 KiB
C#
using System;
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using System.Collections.Generic;
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using System.Reflection;
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using UnityEngine;
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using UnityEditor.Graphing;
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using UnityEditor.UIElements;
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using UnityEngine.UIElements;
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namespace UnityEditor.ShaderGraph.Drawing.Controls
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{
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[AttributeUsage(AttributeTargets.Property)]
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class ChannelEnumControlAttribute : Attribute, IControlAttribute
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{
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string m_Label;
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int m_SlotId;
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public ChannelEnumControlAttribute(string label = null, int slotId = 0)
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{
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m_Label = label;
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m_SlotId = slotId;
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}
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public VisualElement InstantiateControl(AbstractMaterialNode node, PropertyInfo propertyInfo)
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{
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return new ChannelEnumControlView(m_Label, m_SlotId, node, propertyInfo);
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}
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}
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class ChannelEnumControlView : VisualElement, AbstractMaterialNodeModificationListener
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{
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AbstractMaterialNode m_Node;
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PropertyInfo m_PropertyInfo;
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int m_SlotId;
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PopupField<string> m_PopupField;
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string[] m_ValueNames;
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int m_PreviousChannelCount = -1;
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public ChannelEnumControlView(string label, int slotId, AbstractMaterialNode node, PropertyInfo propertyInfo)
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{
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styleSheets.Add(Resources.Load<StyleSheet>("Styles/Controls/ChannelEnumControlView"));
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m_Node = node;
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m_PropertyInfo = propertyInfo;
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m_SlotId = slotId;
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if (!propertyInfo.PropertyType.IsEnum)
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throw new ArgumentException("Property must be an enum.", "propertyInfo");
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Add(new Label(label ?? ObjectNames.NicifyVariableName(propertyInfo.Name)));
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var value = (Enum)m_PropertyInfo.GetValue(m_Node, null);
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m_ValueNames = Enum.GetNames(value.GetType());
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CreatePopup();
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}
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void OnValueChanged(ChangeEvent<string> evt)
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{
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var index = m_PopupField.index;
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var value = (int)m_PropertyInfo.GetValue(m_Node, null);
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if (!index.Equals(value))
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{
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m_Node.owner.owner.RegisterCompleteObjectUndo("Change " + m_Node.name);
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m_PropertyInfo.SetValue(m_Node, index, null);
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}
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CreatePopup();
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}
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public void OnNodeModified(ModificationScope scope)
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{
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if (scope == ModificationScope.Node)
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{
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CreatePopup();
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m_PopupField.MarkDirtyRepaint();
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}
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}
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void CreatePopup()
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{
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int channelCount = SlotValueHelper.GetChannelCount(m_Node.FindSlot<MaterialSlot>(m_SlotId).concreteValueType);
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if (m_PopupField != null)
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{
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if (channelCount == m_PreviousChannelCount)
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return;
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Remove(m_PopupField);
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}
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m_PreviousChannelCount = channelCount;
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List<string> popupEntries = new List<string>();
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for (int i = 0; i < channelCount; i++)
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popupEntries.Add(m_ValueNames[i]);
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var value = (int)m_PropertyInfo.GetValue(m_Node, null);
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if (value >= channelCount)
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value = 0;
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m_PopupField = new PopupField<string>(popupEntries, value);
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m_PopupField.RegisterValueChangedCallback(OnValueChanged);
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Add(m_PopupField);
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}
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}
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}
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