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