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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/. */
#![allow(dead_code)]
#![allow(unreachable_code)]
#![allow(unused_imports)]
#![allow(unused_variables)]
#![deny(unsafe_code)]
#![feature(exact_size_is_empty)]
#[macro_use]
extern crate serde;
pub mod context;
pub mod data;
pub mod display_list;
mod dom_traversal;
mod element_data;
mod flow;
mod formatting_contexts;
mod fragments;
mod geom;
mod opaque_node;
mod positioned;
pub mod query;
mod replaced;
mod style_ext;
pub mod traversal;
pub mod wrapper;
pub use flow::{BoxTreeRoot, FragmentTreeRoot};
use crate::context::LayoutContext;
use crate::dom_traversal::{Contents, NodeExt};
use crate::flow::BlockFormattingContext;
use crate::geom::flow_relative::Vec2;
use crate::positioned::AbsolutelyPositionedFragment;
use crate::replaced::ReplacedContent;
use crate::style_ext::{ComputedValuesExt, Direction, DisplayInside, Position, WritingMode};
use servo_arc::Arc;
use std::convert::TryInto;
use style::properties::ComputedValues;
use style::values::computed::{Length, LengthOrAuto};
use style::Zero;
struct ContainingBlock {
inline_size: Length,
block_size: LengthOrAuto,
mode: (WritingMode, Direction),
}
struct DefiniteContainingBlock {
size: Vec2<Length>,
mode: (WritingMode, Direction),
}
/// https://drafts.csswg.org/css2/visuren.html#relative-positioning
fn relative_adjustement(
style: &ComputedValues,
inline_size: Length,
block_size: LengthOrAuto,
) -> Vec2<Length> {
if style.get_box().position != Position::Relative {
return Vec2::zero();
}
fn adjust(start: LengthOrAuto, end: LengthOrAuto) -> Length {
match (start, end) {
(LengthOrAuto::Auto, LengthOrAuto::Auto) => Length::zero(),
(LengthOrAuto::Auto, LengthOrAuto::LengthPercentage(end)) => -end,
(LengthOrAuto::LengthPercentage(start), _) => start,
}
}
let block_size = block_size.auto_is(Length::zero);
let box_offsets = style.box_offsets().map_inline_and_block_axes(
|v| v.percentage_relative_to(inline_size),
|v| v.percentage_relative_to(block_size),
);
Vec2 {
inline: adjust(box_offsets.inline_start, box_offsets.inline_end),
block: adjust(box_offsets.block_start, box_offsets.block_end),
}
}
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