From 2aa4a82499d4becd2284cdb482213d541b8804dd Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Sun, 28 Apr 2024 16:29:10 +0200 Subject: Adding upstream version 86.0.1. Signed-off-by: Daniel Baumann --- layout/generic/AnonymousContentKey.h | 62 ++++++++++++++++++++++++++++++++++++ 1 file changed, 62 insertions(+) create mode 100644 layout/generic/AnonymousContentKey.h (limited to 'layout/generic/AnonymousContentKey.h') diff --git a/layout/generic/AnonymousContentKey.h b/layout/generic/AnonymousContentKey.h new file mode 100644 index 0000000000..4246146eb3 --- /dev/null +++ b/layout/generic/AnonymousContentKey.h @@ -0,0 +1,62 @@ +/* -*- 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/. */ + +/* values to identify particular subtrees of native anonymous content */ + +#ifndef mozilla_AnonymousContentKey_h +#define mozilla_AnonymousContentKey_h + +#include "mozilla/TypedEnumBits.h" +#include + +namespace mozilla { + +// clang-format off + +// We currently use cached anonymous content styles only for scrollbar parts, +// and we can fit the type of scrollbar part element along with its different +// options (such as orientation, and other attribute values that can affect +// styling) into a uint8_t. +// +// The lower three bits hold a Type_* value identifying the type of +// element, and the remaining bits store Flag_* values. +// +// A value of 0 is used to represent an anonymous content subtree that we don't +// cache styles for. +enum class AnonymousContentKey : uint8_t { + None = 0x00, + + // all + Type_ScrollCorner = 0x01, + Type_Resizer = 0x02, + Type_Scrollbar = 0x03, + Type_ScrollbarButton = 0x04, + Type_Slider = 0x05, + + // scrollbar, scrollbarbutton, slider + Flag_Vertical = 0x08, + + // resizer + // 3-bit bitfield in 0x38 storing dir="" and flip="" + Flag_Resizer_Right = 0x08, + Flag_Resizer_Bottom = 0x10, + Flag_Resizer_BottomLeft = 0x18, + Flag_Resizer_BottomRight = 0x20, + Flag_Resizer_Bottom_Flip = 0x28, + + // scrollbarbutton + Flag_ScrollbarButton_Down = 0x10, + Flag_ScrollbarButton_Bottom = 0x20, + Flag_ScrollbarButton_Decrement = 0x40, +}; + +// clang-format on + +MOZ_MAKE_ENUM_CLASS_BITWISE_OPERATORS(AnonymousContentKey) + +} // namespace mozilla + +#endif // mozilla_AnonymousContentKey_h -- cgit v1.2.3