widget/ThemeChangeKind.h

   1 /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
   2 /* vim: set ts=8 sts=2 et sw=2 tw=80: */
   3 /* This Source Code Form is subject to the terms of the Mozilla Public
   4  * License, v. 2.0. If a copy of the MPL was not distributed with this
   5  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
   6
   7 #ifndef mozilla_widget_ThemeChangeKind
   8 #define mozilla_widget_ThemeChangeKind
   9
  10 #include "mozilla/TypedEnumBits.h"
  11
  12 namespace mozilla::widget {
  13
  14 enum class ThemeChangeKind : uint8_t {
  15   // This is the cheapest change, no need to forcibly recompute style and/or
  16   // layout.
  17   MediaQueriesOnly = 0,
  18   // Style needs to forcibly be recomputed because some of the stuff that may
  19   // have changed, like system colors, are reflected in the computed style but
  20   // not in the specified style.
  21   Style = 1 << 0,
  22   // Layout needs to forcibly be recomputed because some of the stuff that may
  23   // have changed is layout-dependent, like system font.
  24   Layout = 1 << 1,
  25   // The union of the two flags above.
  26   StyleAndLayout = Style | Layout,
  27   // For IPC serialization purposes.
  28   AllBits = Style | Layout,
  29 };
  30
  31 MOZ_MAKE_ENUM_CLASS_BITWISE_OPERATORS(ThemeChangeKind)
  32
  33 }  // namespace mozilla::widget
  34
  35 #endif