Created
April 5, 2013 15:15
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Accepting drag and drop to multiple layout controlled areas in Unity Editor scripts.
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| using UnityEngine; | |
| using UnityEditor; | |
| using System.Collections; | |
| using System.Text; | |
| public class MultiDragAndDropExample : EditorWindow | |
| { | |
| [MenuItem("Examples/Multi Drag and Drop")] | |
| public static void ShowWindow() | |
| { | |
| MultiDragAndDropExample example = ScriptableObject.CreateInstance<MultiDragAndDropExample>(); | |
| if (null != example) example.Show(); | |
| } | |
| /// <summary> | |
| /// Handle Unity's OnGUI call | |
| /// </summary> | |
| void OnGUI() | |
| { | |
| // Draw first area | |
| BoxWithEventsOnGUI("First"); | |
| // Draw second area | |
| BoxWithEventsOnGUI("Second"); | |
| } | |
| /// <summary> | |
| /// Draws a vertical layout box and handles it's events | |
| /// </summary> | |
| /// <param name="label">Label for the box</param> | |
| void BoxWithEventsOnGUI(string label) | |
| { | |
| // Draw the controls | |
| EditorGUILayout.BeginHorizontal("Box"); | |
| { | |
| GUILayout.Label(label); | |
| } | |
| EditorGUILayout.EndHorizontal(); | |
| Rect lastRect = GUILayoutUtility.GetLastRect(); | |
| // Handle events | |
| Event evt = Event.current; | |
| switch (evt.type) | |
| { | |
| case EventType.DragUpdated: | |
| // Test against rect from last repaint | |
| if (lastRect.Contains(evt.mousePosition)) | |
| { | |
| // Change cursor and consume the event | |
| DragAndDrop.visualMode = DragAndDropVisualMode.Copy; | |
| evt.Use(); | |
| } | |
| break; | |
| case EventType.DragPerform: | |
| // Test against rect from last repaint | |
| if (lastRect.Contains(evt.mousePosition)) | |
| { | |
| // Handle the drop however you want to | |
| StringBuilder builder = new StringBuilder(); | |
| builder.Append(label).Append(" accepted items: \n"); | |
| foreach (string path in DragAndDrop.paths) builder.Append(path).Append("\n"); | |
| EditorUtility.DisplayDialog("Drag and Drop", builder.ToString(), "Ok"); | |
| // Change cursor and consume the event and drag | |
| DragAndDrop.visualMode = DragAndDropVisualMode.Copy; | |
| DragAndDrop.AcceptDrag(); | |
| evt.Use(); | |
| } | |
| break; | |
| } | |
| } | |
| } |
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