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

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C#
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2024-09-20 20:30:10 +02:00
using System;
using System.Reflection;
using UnityEngine;
using UnityEditor.Graphing;
using UnityEditor.ShaderGraph;
using UnityEditor.UIElements;
using UnityEngine.UIElements;
namespace UnityEditor.ShaderGraph.Drawing.Controls
{
[AttributeUsage(AttributeTargets.Property)]
class GradientControlAttribute : Attribute, IControlAttribute
{
string m_Label;
public GradientControlAttribute(string label = null)
{
m_Label = label;
}
public VisualElement InstantiateControl(AbstractMaterialNode node, PropertyInfo propertyInfo)
{
return new GradientControlView(m_Label, node, propertyInfo);
}
}
[Serializable]
class GradientObject : ScriptableObject
{
public Gradient gradient = new Gradient();
}
class GradientControlView : VisualElement
{
GUIContent m_Label;
AbstractMaterialNode m_Node;
PropertyInfo m_PropertyInfo;
[SerializeField]
GradientObject m_GradientObject;
[SerializeField]
SerializedObject m_SerializedObject;
public GradientControlView(string label, AbstractMaterialNode node, PropertyInfo propertyInfo)
{
m_Node = node;
m_PropertyInfo = propertyInfo;
styleSheets.Add(Resources.Load<StyleSheet>("Styles/Controls/GradientControlView"));
if (propertyInfo.PropertyType != typeof(Gradient))
throw new ArgumentException("Property must be of type Gradient.", "propertyInfo");
new GUIContent(label ?? ObjectNames.NicifyVariableName(propertyInfo.Name));
m_GradientObject = ScriptableObject.CreateInstance<GradientObject>();
m_GradientObject.gradient = new Gradient();
m_SerializedObject = new SerializedObject(m_GradientObject);
var gradient = (Gradient)m_PropertyInfo.GetValue(m_Node, null);
m_GradientObject.gradient.SetKeys(gradient.colorKeys, gradient.alphaKeys);
m_GradientObject.gradient.mode = gradient.mode;
var gradientPanel = new VisualElement { name = "gradientPanel" };
if (!string.IsNullOrEmpty(label))
gradientPanel.Add(new Label(label));
var gradientField = new GradientField() { value = m_GradientObject.gradient, colorSpace = ColorSpace.Linear, hdr = true };
gradientField.RegisterValueChangedCallback(OnValueChanged);
gradientPanel.Add(gradientField);
Add(gradientPanel);
}
void OnValueChanged(ChangeEvent<Gradient> evt)
{
m_SerializedObject.Update();
var value = (Gradient)m_PropertyInfo.GetValue(m_Node, null);
if (!evt.newValue.Equals(value))
{
m_GradientObject.gradient.SetKeys(evt.newValue.colorKeys, evt.newValue.alphaKeys);
m_GradientObject.gradient.mode = evt.newValue.mode;
m_SerializedObject.ApplyModifiedProperties();
m_Node.owner.owner.RegisterCompleteObjectUndo("Change " + m_Node.name);
m_PropertyInfo.SetValue(m_Node, m_GradientObject.gradient, null);
this.MarkDirtyRepaint();
}
}
}
}