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using UnityEngine;
using System.Collections;
using System.Collections.Generic;
using UnityEditor;
using System.IO;
using System.Reflection;
[InitializeOnLoad]
public static class ShowFileExtensions
{
// ================================================================================
// static constructor
// --------------------------------------------------------------------------------
static ShowFileExtensions()
{
EditorApplication.projectWindowItemOnGUI += ProjectWindowItemOnGUI;
}
// ================================================================================
// checking editor events
// --------------------------------------------------------------------------------
private static void ProjectWindowItemOnGUI(string guid, Rect rect)
{
if (Event.current.alt)
{
EditorWindow window = GetProjectWindow();
string assetPath = AssetDatabase.GUIDToAssetPath(guid);
UnityEngine.Object obj = AssetDatabase.LoadAssetAtPath<UnityEngine.Object>(assetPath);
if (obj != null && AssetDatabase.IsMainAsset(obj) && !IsDirectory(obj))
{
if (showsBigIcons)
{
// just draw it bold in upper left
string extension = Path.GetExtension(assetPath);
GUI.Label(rect, extension, EditorStyles.boldLabel);
}
else
{
// we overpaint the filename here, does look a bit dirty and might need adjustment of the offset
var labelRect = rect.Translate(new Vector2(19f, 1f));
var fileName = Path.GetFileName(assetPath);
GUI.Label(labelRect, fileName);
}
}
EditorApplication.RepaintProjectWindow();
}
}
// ================================================================================
// getting infos about the project window
// --------------------------------------------------------------------------------
private static bool showsBigIcons
{
get
{
return isTwoColumnMode && listAreaGridSize > 16f;
}
}
private static bool isTwoColumnMode
{
get
{
var projectWindow = GetProjectWindow();
var projectWindowType = projectWindow.GetType();
var modeFieldInfo = projectWindowType.GetField("m_ViewMode", BindingFlags.Instance | BindingFlags.NonPublic);
int mode = (int)modeFieldInfo.GetValue(projectWindow);
// 0 == ViewMode.OneColumn
// 1 == ViewMode.TwoColum
return mode == 1;
}
}
private static float listAreaGridSize
{
get
{
var projectWindow = GetProjectWindow();
var projectWindowType = projectWindow.GetType();
var propertyInfo = projectWindowType.GetProperty("listAreaGridSize", BindingFlags.Instance | BindingFlags.Public);
return (float)propertyInfo.GetValue(projectWindow, null);
}
}
/// <summary>
/// there's a chance here we get the wrong one when two project windows are open
/// </summary>
private static EditorWindow GetProjectWindow()
{
if (EditorWindow.focusedWindow != null && EditorWindow.focusedWindow.titleContent.text == "Project")
{
return EditorWindow.focusedWindow;
}
return GetExistingWindowByName("Project");
}
private static EditorWindow GetExistingWindowByName(string name)
{
EditorWindow[] windows = Resources.FindObjectsOfTypeAll<EditorWindow>();
foreach (var item in windows)
{
if (item.titleContent.text == name)
{
return item;
}
}
return default(EditorWindow);
}
// ================================================================================
// utilities
// --------------------------------------------------------------------------------
private static Rect Translate(this Rect rect, Vector2 delta)
{
rect.x += delta.x;
rect.y += delta.y;
return rect;
}
private static bool IsDirectory(UnityEngine.Object obj)
{
if (obj == null)
{
return false;
}
return obj is DefaultAsset && !AssetDatabase.IsForeignAsset(obj);
}
}
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