/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */

/* vim: set ts=8 sts=2 et sw=2 tw=80: */

/* This Source Code Form is subject to the terms of the Mozilla Public

 * License, v. 2.0. If a copy of the MPL was not distributed with this

 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

#ifndef mozilla_PaintTracker_h

#define mozilla_PaintTracker_h

#include "mozilla/Attributes.h"

#include "nsDebug.h"

namespace mozilla {

class MOZ_STACK_CLASS PaintTracker

{

public:

  PaintTracker() { ++gPaintTracker; }

  ~PaintTracker()

  {

    NS_ASSERTION(gPaintTracker > 0, "Mismatched constructor/destructor");

    --gPaintTracker;

  }

  static bool IsPainting() { return !!gPaintTracker; }

private:

  static int gPaintTracker;

};

} // namespace mozilla

#endif // mozilla_PaintTracker_h