139 lines
4.3 KiB
Rust
139 lines
4.3 KiB
Rust
//! This module is included while awaiting an upstream merge in stretch proper.
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//! You should not rely on it, and consider it an implementation detail.
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use core::ops::Add;
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use crate::stretch::number::Number;
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use crate::stretch::style;
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#[derive(Debug, Copy, Clone, PartialEq)]
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pub struct Rect<T> {
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pub start: T,
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pub end: T,
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pub top: T,
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pub bottom: T,
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}
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impl<T> Rect<T> {
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pub(crate) fn map<R, F>(self, f: F) -> Rect<R>
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where
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F: Fn(T) -> R,
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{
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Rect { start: f(self.start), end: f(self.end), top: f(self.top), bottom: f(self.bottom) }
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}
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}
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impl<T> Rect<T>
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where
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T: Add<Output = T> + Copy + Clone,
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{
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pub(crate) fn horizontal(&self) -> T {
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self.start + self.end
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}
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pub(crate) fn vertical(&self) -> T {
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self.top + self.bottom
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}
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pub(crate) fn main(&self, direction: style::FlexDirection) -> T {
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match direction {
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style::FlexDirection::Row | style::FlexDirection::RowReverse => self.start + self.end,
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style::FlexDirection::Column | style::FlexDirection::ColumnReverse => self.top + self.bottom,
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}
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}
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pub(crate) fn cross(&self, direction: style::FlexDirection) -> T {
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match direction {
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style::FlexDirection::Row | style::FlexDirection::RowReverse => self.top + self.bottom,
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style::FlexDirection::Column | style::FlexDirection::ColumnReverse => self.start + self.end,
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}
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}
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}
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impl<T> Rect<T>
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where
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T: Copy + Clone,
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{
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pub(crate) fn main_start(&self, direction: style::FlexDirection) -> T {
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match direction {
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style::FlexDirection::Row | style::FlexDirection::RowReverse => self.start,
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style::FlexDirection::Column | style::FlexDirection::ColumnReverse => self.top,
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}
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}
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pub(crate) fn main_end(&self, direction: style::FlexDirection) -> T {
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match direction {
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style::FlexDirection::Row | style::FlexDirection::RowReverse => self.end,
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style::FlexDirection::Column | style::FlexDirection::ColumnReverse => self.bottom,
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}
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}
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pub(crate) fn cross_start(&self, direction: style::FlexDirection) -> T {
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match direction {
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style::FlexDirection::Row | style::FlexDirection::RowReverse => self.top,
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style::FlexDirection::Column | style::FlexDirection::ColumnReverse => self.start,
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}
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}
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pub(crate) fn cross_end(&self, direction: style::FlexDirection) -> T {
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match direction {
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style::FlexDirection::Row | style::FlexDirection::RowReverse => self.bottom,
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style::FlexDirection::Column | style::FlexDirection::ColumnReverse => self.end,
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}
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}
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}
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#[derive(Debug, Copy, Clone, PartialEq)]
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pub struct Size<T> {
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pub width: T,
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pub height: T,
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}
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impl Size<()> {
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pub fn undefined() -> Size<Number> {
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Size { width: Number::Undefined, height: Number::Undefined }
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}
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}
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impl<T> Size<T> {
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pub(crate) fn map<R, F>(self, f: F) -> Size<R>
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where
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F: Fn(T) -> R,
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{
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Size { width: f(self.width), height: f(self.height) }
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}
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pub(crate) fn set_main(&mut self, direction: style::FlexDirection, value: T) {
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match direction {
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style::FlexDirection::Row | style::FlexDirection::RowReverse => self.width = value,
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style::FlexDirection::Column | style::FlexDirection::ColumnReverse => self.height = value,
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}
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}
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pub(crate) fn set_cross(&mut self, direction: style::FlexDirection, value: T) {
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match direction {
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style::FlexDirection::Row | style::FlexDirection::RowReverse => self.height = value,
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style::FlexDirection::Column | style::FlexDirection::ColumnReverse => self.width = value,
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}
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}
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pub(crate) fn main(self, direction: style::FlexDirection) -> T {
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match direction {
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style::FlexDirection::Row | style::FlexDirection::RowReverse => self.width,
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style::FlexDirection::Column | style::FlexDirection::ColumnReverse => self.height,
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}
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}
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pub(crate) fn cross(self, direction: style::FlexDirection) -> T {
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match direction {
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style::FlexDirection::Row | style::FlexDirection::RowReverse => self.height,
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style::FlexDirection::Column | style::FlexDirection::ColumnReverse => self.width,
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}
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}
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}
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#[derive(Debug, Copy, Clone, PartialEq)]
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pub struct Point<T> {
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pub x: T,
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pub y: T,
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}
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