slint/internal/core/lengths.rs
2022-10-13 17:02:18 +02:00

82 lines
2.5 KiB
Rust

// Copyright © SixtyFPS GmbH <info@slint-ui.com>
// SPDX-License-Identifier: GPL-3.0-only OR LicenseRef-Slint-commercial
use crate::Coord;
/// This type is used as a tagging type for use with [`euclid::Scale`] to convert
/// between physical and logical pixels.
pub struct PhysicalPx;
/// This type is used as a tagging type for use with [`euclid::Scale`] to convert
/// between physical and logical pixels.
pub struct LogicalPx;
pub type LogicalLength = euclid::Length<Coord, LogicalPx>;
pub type LogicalRect = euclid::Rect<Coord, LogicalPx>;
pub type LogicalPoint = euclid::Point2D<Coord, LogicalPx>;
pub type LogicalSize = euclid::Size2D<Coord, LogicalPx>;
pub type LogicalVector = euclid::Vector2D<Coord, LogicalPx>;
pub type ScaleFactor = euclid::Scale<f32, LogicalPx, PhysicalPx>;
pub trait SizeLengths {
type LengthType;
fn width_length(&self) -> Self::LengthType;
fn height_length(&self) -> Self::LengthType;
}
impl<T: Copy, U> SizeLengths for euclid::Size2D<T, U> {
type LengthType = euclid::Length<T, U>;
fn width_length(&self) -> Self::LengthType {
euclid::Length::new(self.width)
}
fn height_length(&self) -> Self::LengthType {
euclid::Length::new(self.height)
}
}
pub trait PointLengths {
type LengthType;
fn x_length(&self) -> Self::LengthType;
fn y_length(&self) -> Self::LengthType;
}
impl<T: Copy, U> PointLengths for euclid::Point2D<T, U> {
type LengthType = euclid::Length<T, U>;
fn x_length(&self) -> Self::LengthType {
euclid::Length::new(self.x)
}
fn y_length(&self) -> Self::LengthType {
euclid::Length::new(self.y)
}
}
impl<T: Copy, U> PointLengths for euclid::Vector2D<T, U> {
type LengthType = euclid::Length<T, U>;
fn x_length(&self) -> Self::LengthType {
euclid::Length::new(self.x)
}
fn y_length(&self) -> Self::LengthType {
euclid::Length::new(self.y)
}
}
pub trait RectLengths {
type SizeType;
type LengthType;
fn size_length(&self) -> Self::SizeType;
fn width_length(&self) -> Self::LengthType;
fn height_length(&self) -> Self::LengthType;
}
impl<T: Copy, U> RectLengths for euclid::Rect<T, U> {
type LengthType = euclid::Length<T, U>;
type SizeType = euclid::Size2D<T, U>;
fn size_length(&self) -> Self::SizeType {
euclid::Size2D::new(self.size.width, self.size.height)
}
fn width_length(&self) -> Self::LengthType {
self.size_length().width_length()
}
fn height_length(&self) -> Self::LengthType {
self.size_length().height_length()
}
}