ScriptableRenderPipeline/MaterialGraphProject/Assets/UnityShaderEditor/Editor/Drawing/SimpleWidgets.cs

using UnityEditor.Experimental;
using UnityEngine;

namespace UnityEditor.MaterialGraph
{
    public class SimpleBox : CanvasElement
    {
        protected string m_Title = "simpleBox";
        protected bool m_Expanded = true;

        protected bool error = false;

        public SimpleBox(Vector2 position, float width)
        {
            translation = position;
            scale = new Vector2(width, width);
        }

        public override void Render(Rect parentRect, Canvas2D canvas)
        {
            Color backgroundColor = new Color(0.0f, 0.0f, 0.0f, 0.7f);
            Color selectedColor = new Color(1.0f, 0.7f, 0.0f, 0.7f);
            EditorGUI.DrawRect(new Rect(0, 0, scale.x, scale.y), error ? Color.red : selected ? selectedColor : backgroundColor);
            GUI.Label(new Rect(0, 0, scale.x, 26f), GUIContent.none, new GUIStyle("preToolbar"));
            GUI.Label(new Rect(10, 2, scale.x - 20.0f, 16.0f), m_Title, EditorStyles.toolbarTextField);

            base.Render(parentRect, canvas);
        }
    }

    public class MoveableBox : SimpleBox
    {
        public MoveableBox(Vector2 position, float width)
            : base(position, width)
        {
            m_Title = "Drag me!";
            AddManipulator(new Draggable());
        }
    }

    internal class ResizableBox : SimpleBox
    {
        public ResizableBox(Vector2 position, float width)
            : base(position, width)
        {
            m_Title = "Resize me!";
            AddManipulator(new Resizable());
            AddManipulator(new Draggable());
        }
    }

    internal class WWWImageBox : SimpleBox
    {
        private Texture2D m_WWWTexture = new Texture2D(4, 4, TextureFormat.DXT1, false);
        private WWW www = null;
        private float timeToNextPicture = 0.0f;

        public WWWImageBox(Vector2 position, float width)
            : base(position, width)
        {
            m_Title = "I cause repaints every frame!";
            AddManipulator(new Draggable());
        }

        public override void Render(Rect parentRect, Canvas2D canvas)
        {
            if (www != null && www.isDone)
            {
                www.LoadImageIntoTexture(m_WWWTexture);
                www = null;
                timeToNextPicture = 3.0f;
            }

            timeToNextPicture -= Time.deltaTime;
            if (timeToNextPicture < 0.0f)
            {
                timeToNextPicture = 99999.0f;
                www = new WWW("http://lorempixel.com/200/200");
            }

            base.Render(parentRect, canvas);

            GUI.DrawTexture(new Rect(0, 20, 200, 200), m_WWWTexture);
            Invalidate();
            canvas.Repaint();
        }
    }

    internal class IMGUIControls : SimpleBox
    {
        private string m_Text1 = "this is a text field";
        private string m_Text2 = "this is a text field";
        private bool m_Toggle = true;
        private Texture2D m_aTexture = null;

        public IMGUIControls(Vector2 position, float width)
            : base(position, width)
        {
            m_Caps = Capabilities.Unselectable;

            m_Title = "modal";
            AddManipulator(new Draggable());
            AddManipulator(new Resizable());
            AddManipulator(new ImguiContainer());
        }

        public override void Render(Rect parentRect, Canvas2D canvas)
        {
            base.Render(parentRect, canvas);

            int currentY = 22;

            m_Text1 = GUI.TextField(new Rect(0, currentY, 80, 20), m_Text1);
            currentY += 22;

            m_Toggle = GUI.Toggle(new Rect(0, currentY, 10, 10), m_Toggle, GUIContent.none);
            currentY += 22;

            m_Text2 = GUI.TextField(new Rect(0, currentY, 80, 20), m_Text2);
            currentY += 22;

            m_aTexture = EditorGUI.ObjectField(new Rect(0, currentY, 80, 100), m_aTexture, typeof(Texture2D), false) as Texture2D;
        }
    }
}