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182 lines
4.7 KiB
182 lines
4.7 KiB
#if UNITY_EDITOR
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using System;
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using System.Reflection;
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using UnityEditor;
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using UnityEngine;
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public static class WindowHelper
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{
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private class R_EditorWindow
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{
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private EditorWindow m_instance;
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private System.Type m_type;
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public R_EditorWindow( EditorWindow instance )
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{
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m_instance = instance;
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m_type = instance.GetType();
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}
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public object Parent
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{
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get
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{
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var field = m_type.GetField( "m_Parent", BindingFlags.Instance | BindingFlags.NonPublic );
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return field.GetValue( m_instance );
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}
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}
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}
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private class R_DockArea
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{
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private object m_instance;
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private System.Type m_type;
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public R_DockArea( object instance )
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{
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m_instance = instance;
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m_type = instance.GetType();
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}
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public object Window
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{
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get
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{
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var property = m_type.GetProperty( "window", BindingFlags.Instance | BindingFlags.Public );
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return property.GetValue( m_instance, null );
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}
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}
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public object OriginalDragSource
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{
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set
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{
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var field = m_type.GetField( "s_OriginalDragSource", BindingFlags.Static | BindingFlags.NonPublic );
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field.SetValue( null, value );
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}
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}
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public void AddTab( EditorWindow pane )
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{
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#if UNITY_2018_3_OR_NEWER
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var method = m_type.GetMethod( "AddTab", BindingFlags.Instance | BindingFlags.Public, null, new System.Type[] { typeof( EditorWindow ), typeof( bool ) }, null );
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method.Invoke( m_instance, new object[] { pane, true } );
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#else
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var method = m_type.GetMethod( "AddTab", BindingFlags.Instance | BindingFlags.Public, null, new System.Type[] { typeof( EditorWindow ) }, null );
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method.Invoke( m_instance, new object[] { pane } );
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#endif
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}
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}
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private class R_ContainerWindow
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{
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private object m_instance;
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private System.Type m_type;
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public R_ContainerWindow( object instance )
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{
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m_instance = instance;
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m_type = instance.GetType();
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}
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public object RootSplitView
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{
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get
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{
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var property = m_type.GetProperty( "rootSplitView", BindingFlags.Instance | BindingFlags.Public );
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return property.GetValue( m_instance, null );
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}
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}
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}
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private class R_SplitView
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{
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private object m_instance;
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private System.Type m_type;
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public R_SplitView( object instance )
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{
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m_instance = instance;
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m_type = instance.GetType();
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}
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public object DragOver( EditorWindow child, Vector2 screenPoint )
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{
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var method = m_type.GetMethod( "DragOver", BindingFlags.Instance | BindingFlags.Public );
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return method.Invoke( m_instance, new object[] { child, screenPoint } );
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}
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public void PerformDrop( EditorWindow child, object dropInfo, Vector2 screenPoint )
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{
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var method = m_type.GetMethod( "PerformDrop", BindingFlags.Instance | BindingFlags.Public );
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method.Invoke( m_instance, new object[] { child, dropInfo, screenPoint } );
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}
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}
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public enum DockPosition
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{
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Left,
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Top,
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Right,
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Bottom
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}
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/// <summary>
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/// Docks the second window to the first window at the given position
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/// </summary>
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public static void Dock( this EditorWindow wnd, EditorWindow other, DockPosition position )
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{
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var mousePosition = GetFakeMousePosition( wnd, position );
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var parent = new R_EditorWindow( wnd );
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var child = new R_EditorWindow( other );
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var dockArea = new R_DockArea( parent.Parent );
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var containerWindow = new R_ContainerWindow( dockArea.Window );
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var splitView = new R_SplitView( containerWindow.RootSplitView );
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var dropInfo = splitView.DragOver( other, mousePosition );
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dockArea.OriginalDragSource = child.Parent;
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splitView.PerformDrop( other, dropInfo, mousePosition );
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}
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/// <summary>
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/// Adds the the second window as a tab at the end of the first window tab list
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/// </summary>
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/// <param name="existingWindow"></param>
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/// <param name="newWindow"></param>
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public static void AddTab( this EditorWindow existingWindow, EditorWindow newWindow )
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{
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var parent = new R_EditorWindow( existingWindow );
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var child = new R_EditorWindow( newWindow );
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var dockArea = new R_DockArea( parent.Parent );
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dockArea.OriginalDragSource = child.Parent;
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dockArea.AddTab( newWindow );
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}
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private static Vector2 GetFakeMousePosition( EditorWindow wnd, DockPosition position )
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{
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Vector2 mousePosition = Vector2.zero;
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// The 20 is required to make the docking work.
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// Smaller values might not work when faking the mouse position.
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switch ( position )
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{
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case DockPosition.Left:
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mousePosition = new Vector2( 20, wnd.position.size.y / 2 );
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break;
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case DockPosition.Top:
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mousePosition = new Vector2( wnd.position.size.x / 2, 20 );
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break;
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case DockPosition.Right:
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mousePosition = new Vector2( wnd.position.size.x - 20, wnd.position.size.y / 2 );
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break;
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case DockPosition.Bottom:
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mousePosition = new Vector2( wnd.position.size.x / 2, wnd.position.size.y - 20 );
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break;
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}
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return GUIUtility.GUIToScreenPoint( mousePosition );
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}
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}
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#endif
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