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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/. */
use crate::geom::{flow_relative, physical};
use style::properties::ComputedValues;
use style::values::computed::{Length, LengthPercentage, LengthPercentageOrAuto, Size};
use style::values::specified::box_ as stylo;
pub use style::computed_values::direction::T as Direction;
pub use style::computed_values::position::T as Position;
pub use style::computed_values::writing_mode::T as WritingMode;
#[derive(Clone, Copy, Eq, PartialEq)]
pub(crate) enum Display {
None,
Contents,
GeneratingBox(DisplayGeneratingBox),
}
#[derive(Clone, Copy, Eq, PartialEq)]
pub(crate) enum DisplayGeneratingBox {
OutsideInside {
outside: DisplayOutside,
inside: DisplayInside,
// list_item: bool,
},
// Layout-internal display types go here:
// https://drafts.csswg.org/css-display-3/#layout-specific-display
}
#[derive(Clone, Copy, Eq, PartialEq)]
pub(crate) enum DisplayOutside {
Block,
Inline,
}
#[derive(Clone, Copy, Eq, PartialEq)]
pub(crate) enum DisplayInside {
Flow,
FlowRoot,
}
pub(crate) trait ComputedValuesExt {
fn writing_mode(&self) -> (WritingMode, Direction);
fn box_offsets(&self) -> flow_relative::Sides<LengthPercentageOrAuto>;
fn box_size(&self) -> flow_relative::Vec2<LengthPercentageOrAuto>;
fn padding(&self) -> flow_relative::Sides<LengthPercentage>;
fn border_width(&self) -> flow_relative::Sides<Length>;
fn margin(&self) -> flow_relative::Sides<LengthPercentageOrAuto>;
}
impl ComputedValuesExt for ComputedValues {
fn writing_mode(&self) -> (WritingMode, Direction) {
let inherited_box = self.get_inherited_box();
let writing_mode = inherited_box.writing_mode;
let direction = inherited_box.direction;
(writing_mode, direction)
}
#[inline]
fn box_offsets(&self) -> flow_relative::Sides<LengthPercentageOrAuto> {
let position = self.get_position();
physical::Sides {
top: position.top,
left: position.left,
bottom: position.bottom,
right: position.right,
}
.to_flow_relative(self.writing_mode())
}
#[inline]
fn box_size(&self) -> flow_relative::Vec2<LengthPercentageOrAuto> {
let position = self.get_position();
physical::Vec2 {
x: size_to_length(position.width),
y: size_to_length(position.height),
}
.size_to_flow_relative(self.writing_mode())
}
#[inline]
fn padding(&self) -> flow_relative::Sides<LengthPercentage> {
let padding = self.get_padding();
physical::Sides {
top: padding.padding_top.0,
left: padding.padding_left.0,
bottom: padding.padding_bottom.0,
right: padding.padding_right.0,
}
.to_flow_relative(self.writing_mode())
}
fn border_width(&self) -> flow_relative::Sides<Length> {
let border = self.get_border();
physical::Sides {
top: border.border_top_width.0,
left: border.border_left_width.0,
bottom: border.border_bottom_width.0,
right: border.border_right_width.0,
}
.to_flow_relative(self.writing_mode())
}
fn margin(&self) -> flow_relative::Sides<LengthPercentageOrAuto> {
let margin = self.get_margin();
physical::Sides {
top: margin.margin_top,
left: margin.margin_left,
bottom: margin.margin_bottom,
right: margin.margin_right,
}
.to_flow_relative(self.writing_mode())
}
}
impl From<stylo::Display> for Display {
fn from(packed: stylo::Display) -> Self {
let inside = match packed.inside() {
stylo::DisplayInside::Flow => DisplayInside::Flow,
stylo::DisplayInside::FlowRoot => DisplayInside::FlowRoot,
// These should not be values of DisplayInside, but oh well
stylo::DisplayInside::None => return Display::None,
stylo::DisplayInside::Contents => return Display::Contents,
};
let outside = match packed.outside() {
stylo::DisplayOutside::Block => DisplayOutside::Block,
stylo::DisplayOutside::Inline => DisplayOutside::Inline,
// This should not be a value of DisplayInside, but oh well
stylo::DisplayOutside::None => return Display::None,
};
Display::GeneratingBox(DisplayGeneratingBox::OutsideInside {
outside,
inside,
// list_item: packed.is_list_item(),
})
}
}
fn size_to_length(size: Size) -> LengthPercentageOrAuto {
match size {
Size::LengthPercentage(length) => LengthPercentageOrAuto::LengthPercentage(length.0),
Size::Auto => LengthPercentageOrAuto::Auto,
}
}
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