Too much space between EditorGUILayout.SelectableLabel

Question

I want to place selectable text into custom EditorWindow.

Here is my code:

 using UnityEditor;
 using UnityEngine;
 using System;
 
 public class MyEditorWindow : EditorWindow
 {
     Vector2 scrollPosition = Vector2.zero;
 
     [MenuItem("Window/MyEditorWindow")]
     public static void ShowExample()
     {
         var wnd = GetWindow<MyEditorWindow>();
         wnd.titleContent = new GUIContent("MyEditorWindow");
     }
 
     private void OnGUI()
     {
         scrollPosition = GUILayout.BeginScrollView(scrollPosition, GUILayout.Width(position.width), GUILayout.Height(position.height));
 
         var elapsed = new TimeSpan();
         for (int i = 0; i < 100; i++)
         {
             elapsed = elapsed.Add(TimeSpan.FromSeconds(1));
         }
 
         for (int i = 0; i < 100; i++)
         {
             EditorGUILayout.SelectableLabel("Some long long long long text");
         }
 
         GUILayout.EndScrollView();
     }
 }

It works, but there is too much space between the lines: alt text

How to make it smaller?

Answer 1

Best Answer

Answer by Bunny83 · Jun 28, 2019 at 10:30 PM

The EditorGUILayout.SelectableLabel is defined like this:

 public static void SelectableLabel(string text, GUIStyle style, params GUILayoutOption[] options)
 {
     Rect position = EditorGUILayout.GetControlRect(false, 32f, style, options);
     EditorGUILayout.s_LastRect = position;
     EditorGUI.SelectableLabel(position, text, style);
 }

As you can see it allocates a fix layout rectangle of 32 pixels height. It does not adjust to the content. You essentially have two options:

use GUILayout.Height() to define a fix height for the label (default single line height is usually 15).
allocate the rect for the control yourself and use EditorGUI.SelectableLabel

Keep in mind that if you draw too many things in OnGUI it will have a huge impact on the performance of the editor. 100 items shouldn't be too bad, however 500+ will probably be and issue.

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Bunny83 · Jun 28, 2019 at 10:35 PM 0

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Note if you have more questions regarding the I$$anonymous$$GUI system, have a look at my I$$anonymous$$GUI crash course (Since Unity Answers has trouble viewing markdown properly, here's a more readable mirror)

Skyblade · Jun 29, 2019 at 06:31 PM 0

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Omega cool, thanks!

Answer 2

Answer by _geo__ · May 13 at 09:36 AM

An implementation of what @Bunny83 suggested ("allocate the rect for the control yourself "). For those in need of a quick copy n paste Solution ;-)

 public static void DrawSelectableLabel(string text, GUIStyle style = null)
 {
     if (style == null)
         style = GUI.skin.label;
     
     var content = new GUIContent(text);
     var position = GUILayoutUtility.GetRect(content, style);
     EditorGUI.SelectableLabel(position, text, style);
 }

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Too much space between EditorGUILayout.SelectableLabel

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