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Introduce web-colors feature flag to enable sRGB linear blending

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This is how browsers perform color management. They treat
gamma-corrected sRGB colors as if they were linear RGB.

Correctness aside, this mode is introduced for legacy reasons. Most
UI/UX tooling uses this color management as well, and many have created
an intuition about how color should behave from interacting with a
browser.

This feature flag should facilitate application development with `iced`
in those cases.

More details: https://webcolorisstillbroken.com/
This commit is contained in:
Héctor Ramón Jiménez 2023-05-31 21:31:58 +02:00
parent b5f102c558
commit faa7627ea4
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GPG key ID: 140CC052C94F138E
16 changed files with 99 additions and 30 deletions
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8
graphics/src/gradient.rs
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@ -3,8 +3,10 @@
//! For a gradient that you can use as a background variant for a widget, see [`Gradient`].
//!
//! [`Gradient`]: crate::core::Gradient;
use crate::color;
use crate::core::gradient::ColorStop;
use crate::core::{self, Color, Point, Rectangle};
use std::cmp::Ordering;
#[derive(Debug, Clone, PartialEq)]
@ -101,7 +103,8 @@ impl Linear {
for (index, stop) in self.stops.iter().enumerate() {
let [r, g, b, a] =
stop.map_or(Color::default(), |s| s.color).into_linear();
color::pack(stop.map_or(Color::default(), |s| s.color))
.components();
data[index * 4] = r;
data[(index * 4) + 1] = g;
@ -133,7 +136,8 @@ pub fn pack(gradient: &core::Gradient, bounds: Rectangle) -> Packed {
for (index, stop) in linear.stops.iter().enumerate() {
let [r, g, b, a] =
stop.map_or(Color::default(), |s| s.color).into_linear();
color::pack(stop.map_or(Color::default(), |s| s.color))
.components();
data[index * 4] = r;
data[(index * 4) + 1] = g;