mirror of
https://github.com/mozilla/gecko-dev.git
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f6572324f9
style: Make all keywords CamelCase for consistency. Source-Repo: https://github.com/servo/servo Source-Revision: b24778202a4d886a990ee493adfb6851ac4be40c --HG-- extra : subtree_source : https%3A//hg.mozilla.org/projects/converted-servo-linear extra : subtree_revision : 9d8fcab8dc2664b0282591a370d6f17e93e00a58
1173 lines
36 KiB
Rust
1173 lines
36 KiB
Rust
/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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//! Geometry in flow-relative space.
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use euclid::{Point2D, Rect, Size2D, SideOffsets2D};
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use euclid::num::Zero;
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use properties::style_structs;
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use std::cmp::{max, min};
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use std::fmt::{self, Debug, Error, Formatter};
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use std::ops::{Add, Sub};
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use unicode_bidi as bidi;
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pub enum BlockFlowDirection {
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TopToBottom,
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RightToLeft,
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LeftToRight
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}
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pub enum InlineBaseDirection {
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LeftToRight,
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RightToLeft
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}
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// TODO: improve the readability of the WritingMode serialization, refer to the Debug:fmt()
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bitflags!(
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#[cfg_attr(feature = "servo", derive(MallocSizeOf, Serialize))]
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pub struct WritingMode: u8 {
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const RTL = 1 << 0;
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const VERTICAL = 1 << 1;
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const VERTICAL_LR = 1 << 2;
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/// For vertical writing modes only. When set, line-over/line-under
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/// sides are inverted from block-start/block-end. This flag is
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/// set when sideways-lr is used.
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const LINE_INVERTED = 1 << 3;
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const SIDEWAYS = 1 << 4;
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const UPRIGHT = 1 << 5;
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}
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);
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impl WritingMode {
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/// Return a WritingMode bitflags from the relevant CSS properties.
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pub fn new(inheritedbox_style: &style_structs::InheritedBox) -> Self {
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use properties::longhands::direction::computed_value::T as Direction;
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use properties::longhands::writing_mode::computed_value::T as SpecifiedWritingMode;
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let mut flags = WritingMode::empty();
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match inheritedbox_style.clone_direction() {
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Direction::Ltr => {},
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Direction::Rtl => {
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flags.insert(WritingMode::RTL);
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},
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}
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match inheritedbox_style.clone_writing_mode() {
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SpecifiedWritingMode::HorizontalTb => {},
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SpecifiedWritingMode::VerticalRl => {
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flags.insert(WritingMode::VERTICAL);
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},
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SpecifiedWritingMode::VerticalLr => {
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flags.insert(WritingMode::VERTICAL);
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flags.insert(WritingMode::VERTICAL_LR);
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},
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#[cfg(feature = "gecko")]
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SpecifiedWritingMode::SidewaysRl => {
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flags.insert(WritingMode::VERTICAL);
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flags.insert(WritingMode::SIDEWAYS);
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},
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#[cfg(feature = "gecko")]
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SpecifiedWritingMode::SidewaysLr => {
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flags.insert(WritingMode::VERTICAL);
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flags.insert(WritingMode::VERTICAL_LR);
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flags.insert(WritingMode::LINE_INVERTED);
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flags.insert(WritingMode::SIDEWAYS);
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},
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}
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#[cfg(feature = "gecko")]
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{
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use properties::longhands::text_orientation::computed_value::T as TextOrientation;
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// If FLAG_SIDEWAYS is already set, this means writing-mode is
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// either sideways-rl or sideways-lr, and for both of these values,
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// text-orientation has no effect.
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if !flags.intersects(WritingMode::SIDEWAYS) {
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match inheritedbox_style.clone_text_orientation() {
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TextOrientation::Mixed => {},
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TextOrientation::Upright => {
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flags.insert(WritingMode::UPRIGHT);
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},
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TextOrientation::Sideways => {
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flags.insert(WritingMode::SIDEWAYS);
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},
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}
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}
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}
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flags
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}
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#[inline]
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pub fn is_vertical(&self) -> bool {
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self.intersects(WritingMode::VERTICAL)
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}
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/// Assuming .is_vertical(), does the block direction go left to right?
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#[inline]
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pub fn is_vertical_lr(&self) -> bool {
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self.intersects(WritingMode::VERTICAL_LR)
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}
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/// Assuming .is_vertical(), does the inline direction go top to bottom?
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#[inline]
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pub fn is_inline_tb(&self) -> bool {
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// https://drafts.csswg.org/css-writing-modes-3/#logical-to-physical
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self.intersects(WritingMode::RTL) == self.intersects(WritingMode::LINE_INVERTED)
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}
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#[inline]
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pub fn is_bidi_ltr(&self) -> bool {
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!self.intersects(WritingMode::RTL)
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}
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#[inline]
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pub fn is_sideways(&self) -> bool {
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self.intersects(WritingMode::SIDEWAYS)
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}
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#[inline]
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pub fn is_upright(&self) -> bool {
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self.intersects(WritingMode::UPRIGHT)
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}
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#[inline]
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pub fn inline_start_physical_side(&self) -> PhysicalSide {
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match (self.is_vertical(), self.is_inline_tb(), self.is_bidi_ltr()) {
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(false, _, true) => PhysicalSide::Left,
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(false, _, false) => PhysicalSide::Right,
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(true, true, _) => PhysicalSide::Top,
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(true, false, _) => PhysicalSide::Bottom,
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}
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}
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#[inline]
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pub fn inline_end_physical_side(&self) -> PhysicalSide {
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match (self.is_vertical(), self.is_inline_tb(), self.is_bidi_ltr()) {
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(false, _, true) => PhysicalSide::Right,
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(false, _, false) => PhysicalSide::Left,
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(true, true, _) => PhysicalSide::Bottom,
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(true, false, _) => PhysicalSide::Top,
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}
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}
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#[inline]
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pub fn block_start_physical_side(&self) -> PhysicalSide {
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match (self.is_vertical(), self.is_vertical_lr()) {
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(false, _) => PhysicalSide::Top,
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(true, true) => PhysicalSide::Left,
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(true, false) => PhysicalSide::Right,
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}
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}
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#[inline]
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pub fn block_end_physical_side(&self) -> PhysicalSide {
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match (self.is_vertical(), self.is_vertical_lr()) {
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(false, _) => PhysicalSide::Bottom,
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(true, true) => PhysicalSide::Right,
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(true, false) => PhysicalSide::Left,
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}
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}
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#[inline]
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pub fn block_flow_direction(&self) -> BlockFlowDirection {
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match (self.is_vertical(), self.is_vertical_lr()) {
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(false, _) => BlockFlowDirection::TopToBottom,
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(true, true) => BlockFlowDirection::LeftToRight,
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(true, false) => BlockFlowDirection::RightToLeft,
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}
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}
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#[inline]
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pub fn inline_base_direction(&self) -> InlineBaseDirection {
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if self.intersects(WritingMode::RTL) {
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InlineBaseDirection::RightToLeft
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} else {
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InlineBaseDirection::LeftToRight
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}
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}
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#[inline]
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/// The default bidirectional embedding level for this writing mode.
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///
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/// Returns bidi level 0 if the mode is LTR, or 1 otherwise.
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pub fn to_bidi_level(&self) -> bidi::Level {
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if self.is_bidi_ltr() {
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bidi::Level::ltr()
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} else {
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bidi::Level::rtl()
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}
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}
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}
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impl fmt::Display for WritingMode {
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fn fmt(&self, formatter: &mut Formatter) -> Result<(), Error> {
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if self.is_vertical() {
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write!(formatter, "V")?;
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if self.is_vertical_lr() {
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write!(formatter, " LR")?;
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} else {
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write!(formatter, " RL")?;
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}
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if self.intersects(WritingMode::SIDEWAYS) {
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write!(formatter, " Sideways")?;
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}
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if self.intersects(WritingMode::LINE_INVERTED) {
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write!(formatter, " Inverted")?;
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}
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} else {
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write!(formatter, "H")?;
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}
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if self.is_bidi_ltr() {
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write!(formatter, " LTR")
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} else {
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write!(formatter, " RTL")
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}
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}
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}
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/// Wherever logical geometry is used, the writing mode is known based on context:
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/// every method takes a `mode` parameter.
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/// However, this context is easy to get wrong.
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/// In debug builds only, logical geometry objects store their writing mode
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/// (in addition to taking it as a parameter to methods) and check it.
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/// In non-debug builds, make this storage zero-size and the checks no-ops.
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#[cfg(not(debug_assertions))]
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#[derive(Clone, Copy, Eq, PartialEq)]
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#[cfg_attr(feature = "servo", derive(Serialize))]
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struct DebugWritingMode;
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#[cfg(debug_assertions)]
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#[derive(Clone, Copy, Eq, PartialEq)]
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#[cfg_attr(feature = "servo", derive(Serialize))]
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struct DebugWritingMode {
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mode: WritingMode
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}
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#[cfg(not(debug_assertions))]
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impl DebugWritingMode {
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#[inline]
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fn check(&self, _other: WritingMode) {}
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#[inline]
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fn check_debug(&self, _other: DebugWritingMode) {}
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#[inline]
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fn new(_mode: WritingMode) -> DebugWritingMode {
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DebugWritingMode
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}
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}
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#[cfg(debug_assertions)]
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impl DebugWritingMode {
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#[inline]
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fn check(&self, other: WritingMode) {
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assert!(self.mode == other)
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}
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#[inline]
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fn check_debug(&self, other: DebugWritingMode) {
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assert!(self.mode == other.mode)
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}
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#[inline]
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fn new(mode: WritingMode) -> DebugWritingMode {
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DebugWritingMode { mode: mode }
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}
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}
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impl Debug for DebugWritingMode {
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#[cfg(not(debug_assertions))]
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fn fmt(&self, formatter: &mut Formatter) -> Result<(), Error> {
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write!(formatter, "?")
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}
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#[cfg(debug_assertions)]
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fn fmt(&self, formatter: &mut Formatter) -> Result<(), Error> {
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write!(formatter, "{}", self.mode)
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}
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}
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// Used to specify the logical direction.
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#[derive(Clone, Copy, Debug, PartialEq)]
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#[cfg_attr(feature = "servo", derive(Serialize))]
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pub enum Direction {
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Inline,
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Block
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}
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/// A 2D size in flow-relative dimensions
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#[derive(Clone, Copy, Eq, PartialEq)]
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#[cfg_attr(feature = "servo", derive(Serialize))]
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pub struct LogicalSize<T> {
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pub inline: T, // inline-size, a.k.a. logical width, a.k.a. measure
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pub block: T, // block-size, a.k.a. logical height, a.k.a. extent
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debug_writing_mode: DebugWritingMode,
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}
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impl<T: Debug> Debug for LogicalSize<T> {
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fn fmt(&self, formatter: &mut Formatter) -> Result<(), Error> {
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write!(formatter, "LogicalSize({:?}, i{:?}×b{:?})",
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self.debug_writing_mode, self.inline, self.block)
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}
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}
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// Can not implement the Zero trait: its zero() method does not have the `mode` parameter.
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impl<T: Zero> LogicalSize<T> {
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#[inline]
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pub fn zero(mode: WritingMode) -> LogicalSize<T> {
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LogicalSize {
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inline: Zero::zero(),
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block: Zero::zero(),
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debug_writing_mode: DebugWritingMode::new(mode),
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}
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}
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}
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impl<T: Copy> LogicalSize<T> {
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#[inline]
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pub fn new(mode: WritingMode, inline: T, block: T) -> LogicalSize<T> {
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LogicalSize {
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inline: inline,
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block: block,
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debug_writing_mode: DebugWritingMode::new(mode),
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}
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}
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#[inline]
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pub fn from_physical(mode: WritingMode, size: Size2D<T>) -> LogicalSize<T> {
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if mode.is_vertical() {
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LogicalSize::new(mode, size.height, size.width)
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} else {
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LogicalSize::new(mode, size.width, size.height)
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}
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}
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#[inline]
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pub fn width(&self, mode: WritingMode) -> T {
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self.debug_writing_mode.check(mode);
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if mode.is_vertical() {
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self.block
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} else {
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self.inline
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}
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}
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#[inline]
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pub fn set_width(&mut self, mode: WritingMode, width: T) {
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self.debug_writing_mode.check(mode);
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if mode.is_vertical() {
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self.block = width
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} else {
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self.inline = width
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}
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}
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#[inline]
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pub fn height(&self, mode: WritingMode) -> T {
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self.debug_writing_mode.check(mode);
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if mode.is_vertical() {
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self.inline
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} else {
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self.block
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}
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}
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#[inline]
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pub fn set_height(&mut self, mode: WritingMode, height: T) {
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self.debug_writing_mode.check(mode);
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if mode.is_vertical() {
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self.inline = height
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} else {
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self.block = height
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}
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}
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#[inline]
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pub fn to_physical(&self, mode: WritingMode) -> Size2D<T> {
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self.debug_writing_mode.check(mode);
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if mode.is_vertical() {
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Size2D::new(self.block, self.inline)
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} else {
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Size2D::new(self.inline, self.block)
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}
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}
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#[inline]
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pub fn convert(&self, mode_from: WritingMode, mode_to: WritingMode) -> LogicalSize<T> {
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if mode_from == mode_to {
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self.debug_writing_mode.check(mode_from);
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*self
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} else {
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LogicalSize::from_physical(mode_to, self.to_physical(mode_from))
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}
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}
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}
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impl<T: Add<T, Output=T>> Add for LogicalSize<T> {
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type Output = LogicalSize<T>;
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#[inline]
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fn add(self, other: LogicalSize<T>) -> LogicalSize<T> {
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self.debug_writing_mode.check_debug(other.debug_writing_mode);
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LogicalSize {
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debug_writing_mode: self.debug_writing_mode,
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inline: self.inline + other.inline,
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block: self.block + other.block,
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}
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}
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}
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impl<T: Sub<T, Output=T>> Sub for LogicalSize<T> {
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type Output = LogicalSize<T>;
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#[inline]
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fn sub(self, other: LogicalSize<T>) -> LogicalSize<T> {
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self.debug_writing_mode.check_debug(other.debug_writing_mode);
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LogicalSize {
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debug_writing_mode: self.debug_writing_mode,
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inline: self.inline - other.inline,
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block: self.block - other.block,
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}
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}
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}
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|
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/// A 2D point in flow-relative dimensions
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#[derive(Clone, Copy, Eq, PartialEq)]
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#[cfg_attr(feature = "servo", derive(Serialize))]
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pub struct LogicalPoint<T> {
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/// inline-axis coordinate
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pub i: T,
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/// block-axis coordinate
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pub b: T,
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debug_writing_mode: DebugWritingMode,
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}
|
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|
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impl<T: Debug> Debug for LogicalPoint<T> {
|
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fn fmt(&self, formatter: &mut Formatter) -> Result<(), Error> {
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write!(formatter, "LogicalPoint({:?} (i{:?}, b{:?}))",
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self.debug_writing_mode, self.i, self.b)
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}
|
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}
|
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|
||
// Can not implement the Zero trait: its zero() method does not have the `mode` parameter.
|
||
impl<T: Zero> LogicalPoint<T> {
|
||
#[inline]
|
||
pub fn zero(mode: WritingMode) -> LogicalPoint<T> {
|
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LogicalPoint {
|
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i: Zero::zero(),
|
||
b: Zero::zero(),
|
||
debug_writing_mode: DebugWritingMode::new(mode),
|
||
}
|
||
}
|
||
}
|
||
|
||
impl<T: Copy> LogicalPoint<T> {
|
||
#[inline]
|
||
pub fn new(mode: WritingMode, i: T, b: T) -> LogicalPoint<T> {
|
||
LogicalPoint {
|
||
i: i,
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b: b,
|
||
debug_writing_mode: DebugWritingMode::new(mode),
|
||
}
|
||
}
|
||
}
|
||
|
||
impl<T: Copy + Sub<T, Output=T>> LogicalPoint<T> {
|
||
#[inline]
|
||
pub fn from_physical(mode: WritingMode, point: Point2D<T>, container_size: Size2D<T>)
|
||
-> LogicalPoint<T> {
|
||
if mode.is_vertical() {
|
||
LogicalPoint {
|
||
i: if mode.is_inline_tb() { point.y } else { container_size.height - point.y },
|
||
b: if mode.is_vertical_lr() { point.x } else { container_size.width - point.x },
|
||
debug_writing_mode: DebugWritingMode::new(mode),
|
||
}
|
||
} else {
|
||
LogicalPoint {
|
||
i: if mode.is_bidi_ltr() { point.x } else { container_size.width - point.x },
|
||
b: point.y,
|
||
debug_writing_mode: DebugWritingMode::new(mode),
|
||
}
|
||
}
|
||
}
|
||
|
||
#[inline]
|
||
pub fn x(&self, mode: WritingMode, container_size: Size2D<T>) -> T {
|
||
self.debug_writing_mode.check(mode);
|
||
if mode.is_vertical() {
|
||
if mode.is_vertical_lr() { self.b } else { container_size.width - self.b }
|
||
} else {
|
||
if mode.is_bidi_ltr() { self.i } else { container_size.width - self.i }
|
||
}
|
||
}
|
||
|
||
#[inline]
|
||
pub fn set_x(&mut self, mode: WritingMode, x: T, container_size: Size2D<T>) {
|
||
self.debug_writing_mode.check(mode);
|
||
if mode.is_vertical() {
|
||
self.b = if mode.is_vertical_lr() { x } else { container_size.width - x }
|
||
} else {
|
||
self.i = if mode.is_bidi_ltr() { x } else { container_size.width - x }
|
||
}
|
||
}
|
||
|
||
#[inline]
|
||
pub fn y(&self, mode: WritingMode, container_size: Size2D<T>) -> T {
|
||
self.debug_writing_mode.check(mode);
|
||
if mode.is_vertical() {
|
||
if mode.is_inline_tb() { self.i } else { container_size.height - self.i }
|
||
} else {
|
||
self.b
|
||
}
|
||
}
|
||
|
||
#[inline]
|
||
pub fn set_y(&mut self, mode: WritingMode, y: T, container_size: Size2D<T>) {
|
||
self.debug_writing_mode.check(mode);
|
||
if mode.is_vertical() {
|
||
self.i = if mode.is_inline_tb() { y } else { container_size.height - y }
|
||
} else {
|
||
self.b = y
|
||
}
|
||
}
|
||
|
||
#[inline]
|
||
pub fn to_physical(&self, mode: WritingMode, container_size: Size2D<T>) -> Point2D<T> {
|
||
self.debug_writing_mode.check(mode);
|
||
if mode.is_vertical() {
|
||
Point2D::new(
|
||
if mode.is_vertical_lr() { self.b } else { container_size.width - self.b },
|
||
if mode.is_inline_tb() { self.i } else { container_size.height - self.i })
|
||
} else {
|
||
Point2D::new(
|
||
if mode.is_bidi_ltr() { self.i } else { container_size.width - self.i },
|
||
self.b)
|
||
}
|
||
}
|
||
|
||
#[inline]
|
||
pub fn convert(&self, mode_from: WritingMode, mode_to: WritingMode, container_size: Size2D<T>)
|
||
-> LogicalPoint<T> {
|
||
if mode_from == mode_to {
|
||
self.debug_writing_mode.check(mode_from);
|
||
*self
|
||
} else {
|
||
LogicalPoint::from_physical(
|
||
mode_to, self.to_physical(mode_from, container_size), container_size)
|
||
}
|
||
}
|
||
}
|
||
|
||
impl<T: Copy + Add<T, Output=T>> LogicalPoint<T> {
|
||
/// This doesn’t really makes sense,
|
||
/// but happens when dealing with multiple origins.
|
||
#[inline]
|
||
pub fn add_point(&self, other: &LogicalPoint<T>) -> LogicalPoint<T> {
|
||
self.debug_writing_mode.check_debug(other.debug_writing_mode);
|
||
LogicalPoint {
|
||
debug_writing_mode: self.debug_writing_mode,
|
||
i: self.i + other.i,
|
||
b: self.b + other.b,
|
||
}
|
||
}
|
||
}
|
||
|
||
impl<T: Copy + Add<T, Output=T>> Add<LogicalSize<T>> for LogicalPoint<T> {
|
||
type Output = LogicalPoint<T>;
|
||
|
||
#[inline]
|
||
fn add(self, other: LogicalSize<T>) -> LogicalPoint<T> {
|
||
self.debug_writing_mode.check_debug(other.debug_writing_mode);
|
||
LogicalPoint {
|
||
debug_writing_mode: self.debug_writing_mode,
|
||
i: self.i + other.inline,
|
||
b: self.b + other.block,
|
||
}
|
||
}
|
||
}
|
||
|
||
impl<T: Copy + Sub<T, Output=T>> Sub<LogicalSize<T>> for LogicalPoint<T> {
|
||
type Output = LogicalPoint<T>;
|
||
|
||
#[inline]
|
||
fn sub(self, other: LogicalSize<T>) -> LogicalPoint<T> {
|
||
self.debug_writing_mode.check_debug(other.debug_writing_mode);
|
||
LogicalPoint {
|
||
debug_writing_mode: self.debug_writing_mode,
|
||
i: self.i - other.inline,
|
||
b: self.b - other.block,
|
||
}
|
||
}
|
||
}
|
||
|
||
|
||
/// A "margin" in flow-relative dimensions
|
||
/// Represents the four sides of the margins, borders, or padding of a CSS box,
|
||
/// or a combination of those.
|
||
/// A positive "margin" can be added to a rectangle to obtain a bigger rectangle.
|
||
#[derive(Clone, Copy, Eq, PartialEq)]
|
||
#[cfg_attr(feature = "servo", derive(Serialize))]
|
||
pub struct LogicalMargin<T> {
|
||
pub block_start: T,
|
||
pub inline_end: T,
|
||
pub block_end: T,
|
||
pub inline_start: T,
|
||
debug_writing_mode: DebugWritingMode,
|
||
}
|
||
|
||
impl<T: Debug> Debug for LogicalMargin<T> {
|
||
fn fmt(&self, formatter: &mut Formatter) -> Result<(), Error> {
|
||
let writing_mode_string = if cfg!(debug_assertions) {
|
||
format!("{:?}, ", self.debug_writing_mode)
|
||
} else {
|
||
"".to_owned()
|
||
};
|
||
|
||
write!(formatter, "LogicalMargin({}i:{:?}..{:?} b:{:?}..{:?})",
|
||
writing_mode_string,
|
||
self.inline_start,
|
||
self.inline_end,
|
||
self.block_start,
|
||
self.block_end)
|
||
}
|
||
}
|
||
|
||
impl<T: Zero> LogicalMargin<T> {
|
||
#[inline]
|
||
pub fn zero(mode: WritingMode) -> LogicalMargin<T> {
|
||
LogicalMargin {
|
||
block_start: Zero::zero(),
|
||
inline_end: Zero::zero(),
|
||
block_end: Zero::zero(),
|
||
inline_start: Zero::zero(),
|
||
debug_writing_mode: DebugWritingMode::new(mode),
|
||
}
|
||
}
|
||
}
|
||
|
||
impl<T: Copy> LogicalMargin<T> {
|
||
#[inline]
|
||
pub fn new(mode: WritingMode, block_start: T, inline_end: T, block_end: T, inline_start: T)
|
||
-> LogicalMargin<T> {
|
||
LogicalMargin {
|
||
block_start: block_start,
|
||
inline_end: inline_end,
|
||
block_end: block_end,
|
||
inline_start: inline_start,
|
||
debug_writing_mode: DebugWritingMode::new(mode),
|
||
}
|
||
}
|
||
|
||
#[inline]
|
||
pub fn new_all_same(mode: WritingMode, value: T) -> LogicalMargin<T> {
|
||
LogicalMargin::new(mode, value, value, value, value)
|
||
}
|
||
|
||
#[inline]
|
||
pub fn from_physical(mode: WritingMode, offsets: SideOffsets2D<T>) -> LogicalMargin<T> {
|
||
let block_start;
|
||
let inline_end;
|
||
let block_end;
|
||
let inline_start;
|
||
if mode.is_vertical() {
|
||
if mode.is_vertical_lr() {
|
||
block_start = offsets.left;
|
||
block_end = offsets.right;
|
||
} else {
|
||
block_start = offsets.right;
|
||
block_end = offsets.left;
|
||
}
|
||
if mode.is_inline_tb() {
|
||
inline_start = offsets.top;
|
||
inline_end = offsets.bottom;
|
||
} else {
|
||
inline_start = offsets.bottom;
|
||
inline_end = offsets.top;
|
||
}
|
||
} else {
|
||
block_start = offsets.top;
|
||
block_end = offsets.bottom;
|
||
if mode.is_bidi_ltr() {
|
||
inline_start = offsets.left;
|
||
inline_end = offsets.right;
|
||
} else {
|
||
inline_start = offsets.right;
|
||
inline_end = offsets.left;
|
||
}
|
||
}
|
||
LogicalMargin::new(mode, block_start, inline_end, block_end, inline_start)
|
||
}
|
||
|
||
#[inline]
|
||
pub fn top(&self, mode: WritingMode) -> T {
|
||
self.debug_writing_mode.check(mode);
|
||
if mode.is_vertical() {
|
||
if mode.is_inline_tb() { self.inline_start } else { self.inline_end }
|
||
} else {
|
||
self.block_start
|
||
}
|
||
}
|
||
|
||
#[inline]
|
||
pub fn set_top(&mut self, mode: WritingMode, top: T) {
|
||
self.debug_writing_mode.check(mode);
|
||
if mode.is_vertical() {
|
||
if mode.is_inline_tb() { self.inline_start = top } else { self.inline_end = top }
|
||
} else {
|
||
self.block_start = top
|
||
}
|
||
}
|
||
|
||
#[inline]
|
||
pub fn right(&self, mode: WritingMode) -> T {
|
||
self.debug_writing_mode.check(mode);
|
||
if mode.is_vertical() {
|
||
if mode.is_vertical_lr() { self.block_end } else { self.block_start }
|
||
} else {
|
||
if mode.is_bidi_ltr() { self.inline_end } else { self.inline_start }
|
||
}
|
||
}
|
||
|
||
#[inline]
|
||
pub fn set_right(&mut self, mode: WritingMode, right: T) {
|
||
self.debug_writing_mode.check(mode);
|
||
if mode.is_vertical() {
|
||
if mode.is_vertical_lr() { self.block_end = right } else { self.block_start = right }
|
||
} else {
|
||
if mode.is_bidi_ltr() { self.inline_end = right } else { self.inline_start = right }
|
||
}
|
||
}
|
||
|
||
#[inline]
|
||
pub fn bottom(&self, mode: WritingMode) -> T {
|
||
self.debug_writing_mode.check(mode);
|
||
if mode.is_vertical() {
|
||
if mode.is_inline_tb() { self.inline_end } else { self.inline_start }
|
||
} else {
|
||
self.block_end
|
||
}
|
||
}
|
||
|
||
#[inline]
|
||
pub fn set_bottom(&mut self, mode: WritingMode, bottom: T) {
|
||
self.debug_writing_mode.check(mode);
|
||
if mode.is_vertical() {
|
||
if mode.is_inline_tb() { self.inline_end = bottom } else { self.inline_start = bottom }
|
||
} else {
|
||
self.block_end = bottom
|
||
}
|
||
}
|
||
|
||
#[inline]
|
||
pub fn left(&self, mode: WritingMode) -> T {
|
||
self.debug_writing_mode.check(mode);
|
||
if mode.is_vertical() {
|
||
if mode.is_vertical_lr() { self.block_start } else { self.block_end }
|
||
} else {
|
||
if mode.is_bidi_ltr() { self.inline_start } else { self.inline_end }
|
||
}
|
||
}
|
||
|
||
#[inline]
|
||
pub fn set_left(&mut self, mode: WritingMode, left: T) {
|
||
self.debug_writing_mode.check(mode);
|
||
if mode.is_vertical() {
|
||
if mode.is_vertical_lr() { self.block_start = left } else { self.block_end = left }
|
||
} else {
|
||
if mode.is_bidi_ltr() { self.inline_start = left } else { self.inline_end = left }
|
||
}
|
||
}
|
||
|
||
#[inline]
|
||
pub fn to_physical(&self, mode: WritingMode) -> SideOffsets2D<T> {
|
||
self.debug_writing_mode.check(mode);
|
||
let top;
|
||
let right;
|
||
let bottom;
|
||
let left;
|
||
if mode.is_vertical() {
|
||
if mode.is_vertical_lr() {
|
||
left = self.block_start;
|
||
right = self.block_end;
|
||
} else {
|
||
right = self.block_start;
|
||
left = self.block_end;
|
||
}
|
||
if mode.is_inline_tb() {
|
||
top = self.inline_start;
|
||
bottom = self.inline_end;
|
||
} else {
|
||
bottom = self.inline_start;
|
||
top = self.inline_end;
|
||
}
|
||
} else {
|
||
top = self.block_start;
|
||
bottom = self.block_end;
|
||
if mode.is_bidi_ltr() {
|
||
left = self.inline_start;
|
||
right = self.inline_end;
|
||
} else {
|
||
right = self.inline_start;
|
||
left = self.inline_end;
|
||
}
|
||
}
|
||
SideOffsets2D::new(top, right, bottom, left)
|
||
}
|
||
|
||
#[inline]
|
||
pub fn convert(&self, mode_from: WritingMode, mode_to: WritingMode) -> LogicalMargin<T> {
|
||
if mode_from == mode_to {
|
||
self.debug_writing_mode.check(mode_from);
|
||
*self
|
||
} else {
|
||
LogicalMargin::from_physical(mode_to, self.to_physical(mode_from))
|
||
}
|
||
}
|
||
}
|
||
|
||
impl<T: PartialEq + Zero> LogicalMargin<T> {
|
||
#[inline]
|
||
pub fn is_zero(&self) -> bool {
|
||
self.block_start == Zero::zero() && self.inline_end == Zero::zero() &&
|
||
self.block_end == Zero::zero() && self.inline_start == Zero::zero()
|
||
}
|
||
}
|
||
|
||
impl<T: Copy + Add<T, Output=T>> LogicalMargin<T> {
|
||
#[inline]
|
||
pub fn inline_start_end(&self) -> T {
|
||
self.inline_start + self.inline_end
|
||
}
|
||
|
||
#[inline]
|
||
pub fn block_start_end(&self) -> T {
|
||
self.block_start + self.block_end
|
||
}
|
||
|
||
#[inline]
|
||
pub fn start_end(&self, direction: Direction) -> T {
|
||
match direction {
|
||
Direction::Inline =>
|
||
self.inline_start + self.inline_end,
|
||
Direction::Block =>
|
||
self.block_start + self.block_end
|
||
}
|
||
}
|
||
|
||
#[inline]
|
||
pub fn top_bottom(&self, mode: WritingMode) -> T {
|
||
self.debug_writing_mode.check(mode);
|
||
if mode.is_vertical() {
|
||
self.inline_start_end()
|
||
} else {
|
||
self.block_start_end()
|
||
}
|
||
}
|
||
|
||
#[inline]
|
||
pub fn left_right(&self, mode: WritingMode) -> T {
|
||
self.debug_writing_mode.check(mode);
|
||
if mode.is_vertical() {
|
||
self.block_start_end()
|
||
} else {
|
||
self.inline_start_end()
|
||
}
|
||
}
|
||
}
|
||
|
||
impl<T: Add<T, Output=T>> Add for LogicalMargin<T> {
|
||
type Output = LogicalMargin<T>;
|
||
|
||
#[inline]
|
||
fn add(self, other: LogicalMargin<T>) -> LogicalMargin<T> {
|
||
self.debug_writing_mode.check_debug(other.debug_writing_mode);
|
||
LogicalMargin {
|
||
debug_writing_mode: self.debug_writing_mode,
|
||
block_start: self.block_start + other.block_start,
|
||
inline_end: self.inline_end + other.inline_end,
|
||
block_end: self.block_end + other.block_end,
|
||
inline_start: self.inline_start + other.inline_start,
|
||
}
|
||
}
|
||
}
|
||
|
||
impl<T: Sub<T, Output=T>> Sub for LogicalMargin<T> {
|
||
type Output = LogicalMargin<T>;
|
||
|
||
#[inline]
|
||
fn sub(self, other: LogicalMargin<T>) -> LogicalMargin<T> {
|
||
self.debug_writing_mode.check_debug(other.debug_writing_mode);
|
||
LogicalMargin {
|
||
debug_writing_mode: self.debug_writing_mode,
|
||
block_start: self.block_start - other.block_start,
|
||
inline_end: self.inline_end - other.inline_end,
|
||
block_end: self.block_end - other.block_end,
|
||
inline_start: self.inline_start - other.inline_start,
|
||
}
|
||
}
|
||
}
|
||
|
||
|
||
/// A rectangle in flow-relative dimensions
|
||
#[derive(Clone, Copy, Eq, PartialEq)]
|
||
#[cfg_attr(feature = "servo", derive(Serialize))]
|
||
pub struct LogicalRect<T> {
|
||
pub start: LogicalPoint<T>,
|
||
pub size: LogicalSize<T>,
|
||
debug_writing_mode: DebugWritingMode,
|
||
}
|
||
|
||
impl<T: Debug> Debug for LogicalRect<T> {
|
||
fn fmt(&self, formatter: &mut Formatter) -> Result<(), Error> {
|
||
let writing_mode_string = if cfg!(debug_assertions) {
|
||
format!("{:?}, ", self.debug_writing_mode)
|
||
} else {
|
||
"".to_owned()
|
||
};
|
||
|
||
write!(formatter, "LogicalRect({}i{:?}×b{:?}, @ (i{:?},b{:?}))",
|
||
writing_mode_string,
|
||
self.size.inline,
|
||
self.size.block,
|
||
self.start.i,
|
||
self.start.b)
|
||
}
|
||
}
|
||
|
||
impl<T: Zero> LogicalRect<T> {
|
||
#[inline]
|
||
pub fn zero(mode: WritingMode) -> LogicalRect<T> {
|
||
LogicalRect {
|
||
start: LogicalPoint::zero(mode),
|
||
size: LogicalSize::zero(mode),
|
||
debug_writing_mode: DebugWritingMode::new(mode),
|
||
}
|
||
}
|
||
}
|
||
|
||
impl<T: Copy> LogicalRect<T> {
|
||
#[inline]
|
||
pub fn new(mode: WritingMode, inline_start: T, block_start: T, inline: T, block: T)
|
||
-> LogicalRect<T> {
|
||
LogicalRect {
|
||
start: LogicalPoint::new(mode, inline_start, block_start),
|
||
size: LogicalSize::new(mode, inline, block),
|
||
debug_writing_mode: DebugWritingMode::new(mode),
|
||
}
|
||
}
|
||
|
||
#[inline]
|
||
pub fn from_point_size(mode: WritingMode, start: LogicalPoint<T>, size: LogicalSize<T>)
|
||
-> LogicalRect<T> {
|
||
start.debug_writing_mode.check(mode);
|
||
size.debug_writing_mode.check(mode);
|
||
LogicalRect {
|
||
start: start,
|
||
size: size,
|
||
debug_writing_mode: DebugWritingMode::new(mode),
|
||
}
|
||
}
|
||
}
|
||
|
||
impl<T: Copy + Add<T, Output=T> + Sub<T, Output=T>> LogicalRect<T> {
|
||
#[inline]
|
||
pub fn from_physical(mode: WritingMode, rect: Rect<T>, container_size: Size2D<T>)
|
||
-> LogicalRect<T> {
|
||
let inline_start;
|
||
let block_start;
|
||
let inline;
|
||
let block;
|
||
if mode.is_vertical() {
|
||
inline = rect.size.height;
|
||
block = rect.size.width;
|
||
if mode.is_vertical_lr() {
|
||
block_start = rect.origin.x;
|
||
} else {
|
||
block_start = container_size.width - (rect.origin.x + rect.size.width);
|
||
}
|
||
if mode.is_inline_tb() {
|
||
inline_start = rect.origin.y;
|
||
} else {
|
||
inline_start = container_size.height - (rect.origin.y + rect.size.height);
|
||
}
|
||
} else {
|
||
inline = rect.size.width;
|
||
block = rect.size.height;
|
||
block_start = rect.origin.y;
|
||
if mode.is_bidi_ltr() {
|
||
inline_start = rect.origin.x;
|
||
} else {
|
||
inline_start = container_size.width - (rect.origin.x + rect.size.width);
|
||
}
|
||
}
|
||
LogicalRect {
|
||
start: LogicalPoint::new(mode, inline_start, block_start),
|
||
size: LogicalSize::new(mode, inline, block),
|
||
debug_writing_mode: DebugWritingMode::new(mode),
|
||
}
|
||
}
|
||
|
||
#[inline]
|
||
pub fn inline_end(&self) -> T {
|
||
self.start.i + self.size.inline
|
||
}
|
||
|
||
#[inline]
|
||
pub fn block_end(&self) -> T {
|
||
self.start.b + self.size.block
|
||
}
|
||
|
||
#[inline]
|
||
pub fn to_physical(&self, mode: WritingMode, container_size: Size2D<T>) -> Rect<T> {
|
||
self.debug_writing_mode.check(mode);
|
||
let x;
|
||
let y;
|
||
let width;
|
||
let height;
|
||
if mode.is_vertical() {
|
||
width = self.size.block;
|
||
height = self.size.inline;
|
||
if mode.is_vertical_lr() {
|
||
x = self.start.b;
|
||
} else {
|
||
x = container_size.width - self.block_end();
|
||
}
|
||
if mode.is_inline_tb() {
|
||
y = self.start.i;
|
||
} else {
|
||
y = container_size.height - self.inline_end();
|
||
}
|
||
} else {
|
||
width = self.size.inline;
|
||
height = self.size.block;
|
||
y = self.start.b;
|
||
if mode.is_bidi_ltr() {
|
||
x = self.start.i;
|
||
} else {
|
||
x = container_size.width - self.inline_end();
|
||
}
|
||
}
|
||
Rect {
|
||
origin: Point2D::new(x, y),
|
||
size: Size2D::new(width, height),
|
||
}
|
||
}
|
||
|
||
#[inline]
|
||
pub fn convert(&self, mode_from: WritingMode, mode_to: WritingMode, container_size: Size2D<T>)
|
||
-> LogicalRect<T> {
|
||
if mode_from == mode_to {
|
||
self.debug_writing_mode.check(mode_from);
|
||
*self
|
||
} else {
|
||
LogicalRect::from_physical(
|
||
mode_to, self.to_physical(mode_from, container_size), container_size)
|
||
}
|
||
}
|
||
|
||
pub fn translate_by_size(&self, offset: LogicalSize<T>) -> LogicalRect<T> {
|
||
LogicalRect {
|
||
start: self.start + offset,
|
||
..*self
|
||
}
|
||
}
|
||
|
||
pub fn translate(&self, offset: &LogicalPoint<T>) -> LogicalRect<T> {
|
||
LogicalRect {
|
||
start: self.start + LogicalSize {
|
||
inline: offset.i,
|
||
block: offset.b,
|
||
debug_writing_mode: offset.debug_writing_mode,
|
||
},
|
||
size: self.size,
|
||
debug_writing_mode: self.debug_writing_mode,
|
||
}
|
||
}
|
||
}
|
||
|
||
impl<T: Copy + Ord + Add<T, Output=T> + Sub<T, Output=T>> LogicalRect<T> {
|
||
#[inline]
|
||
pub fn union(&self, other: &LogicalRect<T>) -> LogicalRect<T> {
|
||
self.debug_writing_mode.check_debug(other.debug_writing_mode);
|
||
|
||
let inline_start = min(self.start.i, other.start.i);
|
||
let block_start = min(self.start.b, other.start.b);
|
||
LogicalRect {
|
||
start: LogicalPoint {
|
||
i: inline_start,
|
||
b: block_start,
|
||
debug_writing_mode: self.debug_writing_mode,
|
||
},
|
||
size: LogicalSize {
|
||
inline: max(self.inline_end(), other.inline_end()) - inline_start,
|
||
block: max(self.block_end(), other.block_end()) - block_start,
|
||
debug_writing_mode: self.debug_writing_mode,
|
||
},
|
||
debug_writing_mode: self.debug_writing_mode,
|
||
}
|
||
}
|
||
}
|
||
|
||
impl<T: Copy + Add<T, Output=T> + Sub<T, Output=T>> Add<LogicalMargin<T>> for LogicalRect<T> {
|
||
type Output = LogicalRect<T>;
|
||
|
||
#[inline]
|
||
fn add(self, other: LogicalMargin<T>) -> LogicalRect<T> {
|
||
self.debug_writing_mode.check_debug(other.debug_writing_mode);
|
||
LogicalRect {
|
||
start: LogicalPoint {
|
||
// Growing a rectangle on the start side means pushing its
|
||
// start point on the negative direction.
|
||
i: self.start.i - other.inline_start,
|
||
b: self.start.b - other.block_start,
|
||
debug_writing_mode: self.debug_writing_mode,
|
||
},
|
||
size: LogicalSize {
|
||
inline: self.size.inline + other.inline_start_end(),
|
||
block: self.size.block + other.block_start_end(),
|
||
debug_writing_mode: self.debug_writing_mode,
|
||
},
|
||
debug_writing_mode: self.debug_writing_mode,
|
||
}
|
||
}
|
||
}
|
||
|
||
|
||
impl<T: Copy + Add<T, Output=T> + Sub<T, Output=T>> Sub<LogicalMargin<T>> for LogicalRect<T> {
|
||
type Output = LogicalRect<T>;
|
||
|
||
#[inline]
|
||
fn sub(self, other: LogicalMargin<T>) -> LogicalRect<T> {
|
||
self.debug_writing_mode.check_debug(other.debug_writing_mode);
|
||
LogicalRect {
|
||
start: LogicalPoint {
|
||
// Shrinking a rectangle on the start side means pushing its
|
||
// start point on the positive direction.
|
||
i: self.start.i + other.inline_start,
|
||
b: self.start.b + other.block_start,
|
||
debug_writing_mode: self.debug_writing_mode,
|
||
},
|
||
size: LogicalSize {
|
||
inline: self.size.inline - other.inline_start_end(),
|
||
block: self.size.block - other.block_start_end(),
|
||
debug_writing_mode: self.debug_writing_mode,
|
||
},
|
||
debug_writing_mode: self.debug_writing_mode,
|
||
}
|
||
}
|
||
}
|
||
|
||
#[derive(Clone, Copy, Debug, PartialEq)]
|
||
pub enum PhysicalSide {
|
||
Top,
|
||
Right,
|
||
Bottom,
|
||
Left,
|
||
}
|