mathe/Library/PackageCache/com.unity.shadergraph@14.0.8/Editor/Drawing/Controls/ChannelEnumMaskControl.cs

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2.9 KiB
C#
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2024-09-20 20:30:10 +02:00
using System;
using System.Reflection;
using UnityEngine;
using UnityEditor.Graphing;
using UnityEngine.UIElements;
namespace UnityEditor.ShaderGraph.Drawing.Controls
{
[AttributeUsage(AttributeTargets.Property)]
class ChannelEnumMaskControlAttribute : Attribute, IControlAttribute
{
string m_Label;
int m_SlotId;
public ChannelEnumMaskControlAttribute(string label = null, int slotId = 0)
{
m_Label = label;
m_SlotId = slotId;
}
public VisualElement InstantiateControl(AbstractMaterialNode node, PropertyInfo propertyInfo)
{
return new ChannelEnumMaskControlView(m_Label, m_SlotId, node, propertyInfo);
}
}
class ChannelEnumMaskControlView : VisualElement, AbstractMaterialNodeModificationListener
{
string m_Label;
AbstractMaterialNode m_Node;
PropertyInfo m_PropertyInfo;
IMGUIContainer m_Container;
int m_SlotId;
public ChannelEnumMaskControlView(string label, int slotId, AbstractMaterialNode node, PropertyInfo propertyInfo)
{
styleSheets.Add(Resources.Load<StyleSheet>("Styles/Controls/ChannelEnumMaskControlView"));
m_Node = node;
m_PropertyInfo = propertyInfo;
m_SlotId = slotId;
//if (!propertyInfo.PropertyType.IsEnum)
//throw new ArgumentException("Property must be an enum.", "propertyInfo");
m_Label = label;
m_Container = new IMGUIContainer(OnGUIHandler);
Add(m_Container);
}
void OnGUIHandler()
{
GUILayout.BeginHorizontal();
GUILayout.Label(m_Label);
UpdatePopup();
GUILayout.EndHorizontal();
}
public void OnNodeModified(ModificationScope scope)
{
if (scope == ModificationScope.Graph)
m_Container.MarkDirtyRepaint();
}
private void UpdatePopup()
{
var value = (int)m_PropertyInfo.GetValue(m_Node, null);
using (var changeCheckScope = new EditorGUI.ChangeCheckScope())
{
int channelCount = SlotValueHelper.GetChannelCount(m_Node.FindSlot<MaterialSlot>(m_SlotId).concreteValueType);
string[] enumEntryNames = Enum.GetNames(typeof(TextureChannel));
string[] popupEntries = new string[channelCount];
for (int i = 0; i < popupEntries.Length; i++)
popupEntries[i] = enumEntryNames[i];
value = EditorGUILayout.MaskField("", value, popupEntries, GUILayout.Width(80f));
if (changeCheckScope.changed)
{
m_Node.owner.owner.RegisterCompleteObjectUndo("Change " + m_Node.name);
m_PropertyInfo.SetValue(m_Node, value, null);
}
}
}
}
}