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/* 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/. */
#![deny(unsafe_code)]
mod cell;
pub mod context;
pub mod display_list;
pub mod dom;
mod dom_traversal;
mod flexbox;
pub mod flow;
mod formatting_contexts;
mod fragment_tree;
pub mod geom;
#[macro_use]
pub mod layout_debug;
mod lists;
mod positioned;
pub mod query;
mod replaced;
mod sizing;
mod style_ext;
pub mod table;
pub mod traversal;
use app_units::Au;
pub use flow::BoxTree;
pub use fragment_tree::FragmentTree;
use geom::AuOrAuto;
use style::logical_geometry::WritingMode;
use style::properties::ComputedValues;
use crate::geom::{LogicalVec2, SizeConstraint};
/// Represents the set of constraints that we use when computing the min-content
/// and max-content inline sizes of an element.
pub(crate) struct ConstraintSpace {
pub block_size: SizeConstraint,
pub writing_mode: WritingMode,
}
impl ConstraintSpace {
fn new(block_size: SizeConstraint, writing_mode: WritingMode) -> Self {
Self {
block_size,
writing_mode,
}
}
fn new_for_style(style: &ComputedValues) -> Self {
Self::new(SizeConstraint::default(), style.writing_mode)
}
}
/// A variant of [`ContainingBlock`] that allows an indefinite inline size.
/// Useful for code that is shared for both layout (where we know the inline size
/// of the containing block) and intrinsic sizing (where we don't know it).
pub(crate) struct IndefiniteContainingBlock {
pub size: LogicalVec2<AuOrAuto>,
pub writing_mode: WritingMode,
}
impl From<&ConstraintSpace> for IndefiniteContainingBlock {
fn from(constraint_space: &ConstraintSpace) -> Self {
Self {
size: LogicalVec2 {
inline: AuOrAuto::Auto,
block: constraint_space.block_size.to_auto_or(),
},
writing_mode: constraint_space.writing_mode,
}
}
}
impl<'a> From<&'_ ContainingBlock<'a>> for IndefiniteContainingBlock {
fn from(containing_block: &ContainingBlock<'a>) -> Self {
Self {
size: LogicalVec2 {
inline: AuOrAuto::LengthPercentage(containing_block.inline_size),
block: containing_block.block_size,
},
writing_mode: containing_block.style.writing_mode,
}
}
}
impl<'a> From<&'_ DefiniteContainingBlock<'a>> for IndefiniteContainingBlock {
fn from(containing_block: &DefiniteContainingBlock<'a>) -> Self {
Self {
size: containing_block
.size
.map(|v| AuOrAuto::LengthPercentage(*v)),
writing_mode: containing_block.style.writing_mode,
}
}
}
pub struct ContainingBlock<'a> {
inline_size: Au,
block_size: AuOrAuto,
style: &'a ComputedValues,
}
struct DefiniteContainingBlock<'a> {
size: LogicalVec2<Au>,
style: &'a ComputedValues,
}
impl<'a> From<&'_ DefiniteContainingBlock<'a>> for ContainingBlock<'a> {
fn from(definite: &DefiniteContainingBlock<'a>) -> Self {
ContainingBlock {
inline_size: definite.size.inline,
block_size: AuOrAuto::LengthPercentage(definite.size.block),
style: definite.style,
}
}
}
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