ScrollView in custom editor window

Unity Engine
1

Hello,

I am trying to put a SelectionGrid into a ScrollView. I want the scroll view to have a fixed height, but adapt to the width of my editor window. Basically, I want the window to look like this (on the bottom right).

However, I don’t know where to specify the dynamic width and fixed height of the scroll view. The scroll view just stays small as in the screenshot.

Below is my code, I thought GUILayout.ExpandWidth(true) would at least expand the scroll view to fill the width of the editor window, but… nope. Any suggestions?

    private void OnGUI()
    {
        // Create a list of previews from the prefabs list
        List<GUIContent> paletteIcons = new List<GUIContent>();
        foreach (GameObject prefab in prefabs)
        {
            Texture2D texture = AssetPreview.GetAssetPreview(prefab);
            paletteIcons.Add(new GUIContent(texture, prefab.name));
        }

        paletteScrollPos = EditorGUILayout.BeginScrollView(paletteScrollPos, GUILayout.ExpandWidth(true));

        paletteIndex = GUILayout.SelectionGrid(paletteIndex, paletteIcons.ToArray(), 6, GUILayout.Width(100), GUILayout.Height(100));

        GUI.EndScrollView();   
    }

5127965--506786--Anmerkung 2019-10-31 224456.png
5127965--506786--Anmerkung 2019-10-31 224456.png530×584 4.19 KB

2

You’re passing GUILayout.Width(100) and GUILayout.Height(100) to GUILayout.SelectionGrid, which is causing the grid to be drawn inside that small area.

3

Also you should be using EditorGUILayout.EndScrollView instead of GUI.EndScrollView.