122 lines
3.2 KiB
Rust
122 lines
3.2 KiB
Rust
#![allow(clippy::derived_hash_with_manual_eq)] // We need to impl Hash for f32, but we don't implement Eq, which is fine
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use std::{fmt::Debug, sync::Arc};
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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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pub const NONE: Self = Self {
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width: 0.0,
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color: 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)) -> Self {
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Self::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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emath::OrderedFloat(width).hash(state);
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color.hash(state);
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}
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}
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/// Describes the width and color of paths. The color can either be solid or provided by a callback. For more information, see [`ColorMode`]
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///
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/// The default stroke is the same as [`Stroke::NONE`].
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#[derive(Clone, Debug, Default, PartialEq)]
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#[cfg_attr(feature = "serde", derive(serde::Deserialize, serde::Serialize))]
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pub struct PathStroke {
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pub width: f32,
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pub color: ColorMode,
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}
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impl PathStroke {
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/// Same as [`PathStroke::default`].
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pub const NONE: Self = Self {
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width: 0.0,
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color: ColorMode::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: ColorMode::Solid(color.into()),
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}
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}
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/// Create a new `PathStroke` with a UV function
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///
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/// The bounding box passed to the callback will have a margin of [`TessellationOptions::feathering_size_in_pixels`](`crate::tessellator::TessellationOptions::feathering_size_in_pixels`)
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#[inline]
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pub fn new_uv(
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width: impl Into<f32>,
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callback: impl Fn(Rect, Pos2) -> Color32 + Send + Sync + 'static,
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) -> Self {
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Self {
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width: width.into(),
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color: ColorMode::UV(Arc::new(callback)),
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}
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}
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/// True if width is zero or color is solid and 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 == ColorMode::TRANSPARENT
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}
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}
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impl<Color> From<(f32, Color)> for PathStroke
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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)) -> Self {
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Self::new(width, color)
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}
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}
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impl From<Stroke> for PathStroke {
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fn from(value: Stroke) -> Self {
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Self {
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width: value.width,
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color: ColorMode::Solid(value.color),
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}
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}
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}
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