5539dbe620
* Rename epaint feature "persistence" to "serialize" * Add separate "serialize" feature to egui * egui_demo_lib: separate serialize and persistence features * Add App::persist_native_window and App::persist_egui_memory Controls what gets persisted
54 lines
1.3 KiB
Rust
54 lines
1.3 KiB
Rust
#![allow(clippy::derive_hash_xor_eq)] // We need to impl Hash for f32, but we don't implement Eq, which is fine
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use super::*;
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/// Describes the width and color of a line.
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///
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/// The default stroke is the same as [`Stroke::none`].
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#[derive(Clone, Copy, Debug, Default, PartialEq)]
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#[cfg_attr(feature = "serde", derive(serde::Deserialize, serde::Serialize))]
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pub struct Stroke {
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pub width: f32,
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pub color: Color32,
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}
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impl Stroke {
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/// Same as [`Stroke::default`].
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#[inline(always)]
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pub fn none() -> Self {
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Self::new(0.0, Color32::TRANSPARENT)
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}
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#[inline]
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pub fn new(width: impl Into<f32>, color: impl Into<Color32>) -> Self {
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Self {
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width: width.into(),
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color: color.into(),
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}
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}
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/// True if width is zero or color is transparent
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#[inline]
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pub fn is_empty(&self) -> bool {
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self.width <= 0.0 || self.color == Color32::TRANSPARENT
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}
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}
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impl<Color> From<(f32, Color)> for Stroke
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where
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Color: Into<Color32>,
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{
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#[inline(always)]
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fn from((width, color): (f32, Color)) -> Stroke {
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Stroke::new(width, color)
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}
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}
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impl std::hash::Hash for Stroke {
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#[inline(always)]
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fn hash<H: std::hash::Hasher>(&self, state: &mut H) {
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let Self { width, color } = *self;
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crate::f32_hash(state, width);
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color.hash(state);
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}
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}
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