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authorMartin Robinson <mrobinson@igalia.com>2025-04-19 12:17:03 +0200
committerGitHub <noreply@github.com>2025-04-19 10:17:03 +0000
commit7787cab521ccc6b4d8533ebe9b45563046e0463d (patch)
treed1277fa3846f24cc99859310da3d7f099c73bfc5 /components/layout_2020/fragment_tree/base_fragment.rs
parent3ab5b8c4472129798b63cfb40b63ae672763b653 (diff)
downloadservo-7787cab521ccc6b4d8533ebe9b45563046e0463d.tar.gz
servo-7787cab521ccc6b4d8533ebe9b45563046e0463d.zip
layout: Combine `layout_2020` and `layout_thread_2020` into a crate called `layout` (#36613)
Now that legacy layout has been removed, the name `layout_2020` doesn't make much sense any longer, also it's 2025 now for better or worse. The split between the "layout thread" and "layout" also doesn't make as much sense since layout doesn't run on it's own thread. There's a possibility that it will in the future, but that should be something that the user of the crate controls rather than layout iself. This is part of the larger layout interface cleanup and optimization that @Looriool and I are doing. Testing: Covered by existing tests as this is just code movement. Signed-off-by: Martin Robinson <mrobinson@igalia.com>
Diffstat (limited to 'components/layout_2020/fragment_tree/base_fragment.rs')
-rw-r--r--components/layout_2020/fragment_tree/base_fragment.rs143
1 files changed, 0 insertions, 143 deletions
diff --git a/components/layout_2020/fragment_tree/base_fragment.rs b/components/layout_2020/fragment_tree/base_fragment.rs
deleted file mode 100644
index 48d672a8547..00000000000
--- a/components/layout_2020/fragment_tree/base_fragment.rs
+++ /dev/null
@@ -1,143 +0,0 @@
-/* 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 https://mozilla.org/MPL/2.0/. */
-
-use bitflags::bitflags;
-use malloc_size_of::malloc_size_of_is_0;
-use malloc_size_of_derive::MallocSizeOf;
-use script_layout_interface::combine_id_with_fragment_type;
-use style::dom::OpaqueNode;
-use style::selector_parser::PseudoElement;
-
-/// This data structure stores fields that are common to all non-base
-/// Fragment types and should generally be the first member of all
-/// concrete fragments.
-#[derive(Clone, Debug, MallocSizeOf)]
-pub(crate) struct BaseFragment {
- /// A tag which identifies the DOM node and pseudo element of this
- /// Fragment's content. If this fragment is for an anonymous box,
- /// the tag will be None.
- pub tag: Option<Tag>,
-
- /// Flags which various information about this fragment used during
- /// layout.
- pub flags: FragmentFlags,
-}
-
-impl BaseFragment {
- pub(crate) fn anonymous() -> Self {
- BaseFragment {
- tag: None,
- flags: FragmentFlags::empty(),
- }
- }
-
- /// Returns true if this fragment is non-anonymous and it is for the given
- /// OpaqueNode, regardless of the pseudo element.
- pub(crate) fn is_for_node(&self, node: OpaqueNode) -> bool {
- self.tag.map(|tag| tag.node == node).unwrap_or(false)
- }
-}
-
-/// Information necessary to construct a new BaseFragment.
-#[derive(Clone, Copy, Debug, MallocSizeOf)]
-pub(crate) struct BaseFragmentInfo {
- /// The tag to use for the new BaseFragment, if it is not an anonymous Fragment.
- pub tag: Option<Tag>,
-
- /// The flags to use for the new BaseFragment.
- pub flags: FragmentFlags,
-}
-
-impl BaseFragmentInfo {
- pub(crate) fn new_for_node(node: OpaqueNode) -> Self {
- Self {
- tag: Some(Tag::new(node)),
- flags: FragmentFlags::empty(),
- }
- }
-
- pub(crate) fn anonymous() -> Self {
- Self {
- tag: None,
- flags: FragmentFlags::empty(),
- }
- }
-}
-
-impl From<BaseFragmentInfo> for BaseFragment {
- fn from(info: BaseFragmentInfo) -> Self {
- Self {
- tag: info.tag,
- flags: info.flags,
- }
- }
-}
-
-bitflags! {
- /// Flags used to track various information about a DOM node during layout.
- #[derive(Clone, Copy, Debug)]
- pub(crate) struct FragmentFlags: u16 {
- /// Whether or not the node that created this fragment is a `<body>` element on an HTML document.
- const IS_BODY_ELEMENT_OF_HTML_ELEMENT_ROOT = 1 << 0;
- /// Whether or not the node that created this Fragment is a `<br>` element.
- const IS_BR_ELEMENT = 1 << 1;
- /// Whether or not the node that created this Fragment is a `<input>` or `<textarea>` element.
- const IS_TEXT_CONTROL = 1 << 2;
- /// Whether or not this Fragment is a flex item or a grid item.
- const IS_FLEX_OR_GRID_ITEM = 1 << 3;
- /// Whether or not this Fragment was created to contain a replaced element or is
- /// a replaced element.
- const IS_REPLACED = 1 << 4;
- /// Whether or not the node that created was a `<table>`, `<th>` or
- /// `<td>` element. Note that this does *not* include elements with
- /// `display: table` or `display: table-cell`.
- const IS_TABLE_TH_OR_TD_ELEMENT = 1 << 5;
- /// Whether or not this Fragment was created to contain a list item marker
- /// with a used value of `list-style-position: outside`.
- const IS_OUTSIDE_LIST_ITEM_MARKER = 1 << 6;
- /// Avoid painting the borders, backgrounds, and drop shadow for this fragment, this is used
- /// for empty table cells when 'empty-cells' is 'hide' and also table wrappers. This flag
- /// doesn't avoid hit-testing nor does it prevent the painting outlines.
- const DO_NOT_PAINT = 1 << 7;
- /// Whether or not the size of this fragment depends on the block size of its container
- /// and the fragment can be a flex item. This flag is used to cache items during flex
- /// layout.
- const SIZE_DEPENDS_ON_BLOCK_CONSTRAINTS_AND_CAN_BE_CHILD_OF_FLEX_ITEM = 1 << 8;
- /// Whether or not the node that created this fragment is the root element.
- const IS_ROOT_ELEMENT = 1 << 9;
- }
-}
-
-malloc_size_of_is_0!(FragmentFlags);
-
-/// A data structure used to hold DOM and pseudo-element information about
-/// a particular layout object.
-#[derive(Clone, Copy, Debug, Eq, MallocSizeOf, PartialEq)]
-pub(crate) struct Tag {
- pub(crate) node: OpaqueNode,
- pub(crate) pseudo: Option<PseudoElement>,
-}
-
-impl Tag {
- /// Create a new Tag for a non-pseudo element. This is mainly used for
- /// matching existing tags, since it does not accept an `info` argument.
- pub(crate) fn new(node: OpaqueNode) -> Self {
- Tag { node, pseudo: None }
- }
-
- /// Create a new Tag for a pseudo element. This is mainly used for
- /// matching existing tags, since it does not accept an `info` argument.
- pub(crate) fn new_pseudo(node: OpaqueNode, pseudo: Option<PseudoElement>) -> Self {
- Tag { node, pseudo }
- }
-
- /// Returns true if this tag is for a pseudo element.
- pub(crate) fn is_pseudo(&self) -> bool {
- self.pseudo.is_some()
- }
-
- pub(crate) fn to_display_list_fragment_id(self) -> u64 {
- combine_id_with_fragment_type(self.node.id(), self.pseudo.into())
- }
-}
generated by cgit v1.2.3 (git 2.25.1) at 2025-04-21 09:12:56 +0000