public void OnGUI()
{
Event current = Event.current;
Handles.BeginGUI();
Vector2 mousePosition = current.mousePosition;
int controlID = s_RectSelectionID;
EventType typeForControl = current.GetTypeForControl(controlID);
switch (typeForControl)
{
case EventType.MouseDown:
if ((HandleUtility.nearestControl == controlID) && (current.button == 0))
{
GUIUtility.hotControl = controlID;
this.m_SelectStartPoint = mousePosition;
this.m_SelectionStart = Selection.objects;
this.m_RectSelecting = false;
}
goto Label_04F7;
case EventType.MouseUp:
if ((GUIUtility.hotControl == controlID) && (current.button == 0))
{
GUIUtility.hotControl = 0;
if (!this.m_RectSelecting)
{
if (current.shift || EditorGUI.actionKey)
{
GameObject obj5 = HandleUtility.PickGameObject(current.mousePosition, false);
if (!EditorGUI.actionKey ? (Selection.activeGameObject == obj5) : Enumerable.Contains<GameObject>(Selection.gameObjects, obj5))
{
UpdateSelection(this.m_SelectionStart, obj5, SelectionType.Subtractive, this.m_RectSelecting);
}
else
{
UpdateSelection(this.m_SelectionStart, HandleUtility.PickGameObject(current.mousePosition, true), SelectionType.Additive, this.m_RectSelecting);
}
}
else
{
GameObject newObject = SceneViewPicking.PickGameObject(current.mousePosition);
UpdateSelection(this.m_SelectionStart, newObject, SelectionType.Normal, this.m_RectSelecting);
}
current.Use();
}
else
{
EditorApplication.modifierKeysChanged = (EditorApplication.CallbackFunction) Delegate.Remove(EditorApplication.modifierKeysChanged, new EditorApplication.CallbackFunction(this.SendCommandsOnModifierKeys));
this.m_RectSelecting = false;
this.m_SelectionStart = new Object[0];
current.Use();
}
}
goto Label_04F7;
case EventType.MouseDrag:
if (GUIUtility.hotControl != controlID)
{
goto Label_04F7;
}
if (!this.m_RectSelecting)
{
Vector2 vector2 = mousePosition - this.m_SelectStartPoint;
if (vector2.magnitude > 6f)
{
EditorApplication.modifierKeysChanged = (EditorApplication.CallbackFunction) Delegate.Combine(EditorApplication.modifierKeysChanged, new EditorApplication.CallbackFunction(this.SendCommandsOnModifierKeys));
this.m_RectSelecting = true;
this.m_LastSelection = null;
this.m_CurrentSelection = null;
}
}
if (this.m_RectSelecting)
{
float x = Mathf.Max(mousePosition.x, 0f);
this.m_SelectMousePoint = new Vector2(x, Mathf.Max(mousePosition.y, 0f));
GameObject[] newObjects = HandleUtility.PickRectObjects(EditorGUIExt.FromToRect(this.m_SelectStartPoint, this.m_SelectMousePoint));
this.m_CurrentSelection = newObjects;
bool flag = false;
if (this.m_LastSelection == null)
{
this.m_LastSelection = new Dictionary<GameObject, bool>();
flag = true;
}
flag |= this.m_LastSelection.Count != newObjects.Length;
if (!flag)
{
Dictionary<GameObject, bool> dictionary = new Dictionary<GameObject, bool>(newObjects.Length);
foreach (GameObject obj2 in newObjects)
{
dictionary.Add(obj2, false);
}
foreach (GameObject obj3 in this.m_LastSelection.Keys)
{
if (!dictionary.ContainsKey(obj3))
{
flag = true;
break;
}
}
}
if (flag)
{
this.m_LastSelection = new Dictionary<GameObject, bool>(newObjects.Length);
foreach (GameObject obj4 in newObjects)
{
this.m_LastSelection.Add(obj4, false);
}
if (newObjects != null)
{
if (current.shift)
{
UpdateSelection(this.m_SelectionStart, newObjects, SelectionType.Additive, this.m_RectSelecting);
}
else if (EditorGUI.actionKey)
{
UpdateSelection(this.m_SelectionStart, newObjects, SelectionType.Subtractive, this.m_RectSelecting);
}
else
{
UpdateSelection(this.m_SelectionStart, newObjects, SelectionType.Normal, this.m_RectSelecting);
}
}
}
}
break;
case EventType.Repaint:
if ((GUIUtility.hotControl == controlID) && this.m_RectSelecting)
{
EditorStyles.selectionRect.Draw(EditorGUIExt.FromToRect(this.m_SelectStartPoint, this.m_SelectMousePoint), GUIContent.none, false, false, false, false);
}
goto Label_04F7;
case EventType.Layout:
if (!Tools.viewToolActive)
{
HandleUtility.AddDefaultControl(controlID);
}
goto Label_04F7;
default:
if ((typeForControl == EventType.ExecuteCommand) && ((controlID == GUIUtility.hotControl) && (current.commandName == "ModifierKeysChanged")))
{
if (current.shift)
{
UpdateSelection(this.m_SelectionStart, this.m_CurrentSelection, SelectionType.Additive, this.m_RectSelecting);
}
else if (EditorGUI.actionKey)
{
UpdateSelection(this.m_SelectionStart, this.m_CurrentSelection, SelectionType.Subtractive, this.m_RectSelecting);
}
else
{
UpdateSelection(this.m_SelectionStart, this.m_CurrentSelection, SelectionType.Normal, this.m_RectSelecting);
}
current.Use();
}
goto Label_04F7;
}
current.Use();
Label_04F7:
Handles.EndGUI();
}
