/usr/include/thunderbird/Visibility.h is in thunderbird-dev 1:52.8.0-1~deb8u1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 | /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* 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/. */
/**
* Declares visibility-related types. @Visibility is an enumeration of the
* possible visibility states of a frame. @OnNonvisible is an enumeration that
* allows callers to request a specific action when a frame transitions from
* visible to nonvisible.
*/
#ifndef mozilla_layout_generic_Visibility_h
#define mozilla_layout_generic_Visibility_h
namespace mozilla {
// Visibility states for frames.
enum class Visibility : uint8_t
{
// Indicates that we're not tracking visibility for this frame.
UNTRACKED,
// Indicates that the frame is probably nonvisible. Visible frames *may* be
// APPROXIMATELY_NONVISIBLE because approximate visibility is not updated
// synchronously. Some truly nonvisible frames may be marked
// APPROXIMATELY_VISIBLE instead if our heuristics lead us to think they may
// be visible soon.
APPROXIMATELY_NONVISIBLE,
// Indicates that the frame is either visible now or is likely to be visible
// soon according to our heuristics. As with APPROXIMATELY_NONVISIBLE, it's
// important to note that approximately visibility is not updated
// synchronously, so this information may be out of date.
APPROXIMATELY_VISIBLE
};
// Requested actions when frames transition to the nonvisible state.
enum class OnNonvisible : uint8_t
{
DISCARD_IMAGES // Discard images associated with the frame.
};
} // namespace mozilla
#endif // mozilla_layout_generic_Visibility_h
|