added tests for alpha in oklch longer

niri-visual-tests/src/cases/gradient_oklch_alpha.rs

@@ -0,0 +1,51 @@
+use niri::render_helpers::border::BorderRenderElement;
+use niri_config::{CornerRadius, GradientInterpolation, HueInterpolation, GradientColorSpace};
+use smithay::backend::renderer::element::RenderElement;
+use smithay::backend::renderer::gles::GlesRenderer;
+use smithay::utils::{Logical, Physical, Rectangle, Size};
+
+use super::TestCase;
+
+pub struct GradientOklchAlpha {
+    gradient_format: GradientInterpolation,
+}
+
+impl GradientOklchAlpha {
+    pub fn new(_size: Size<i32, Logical>) -> Self {
+        Self {
+            gradient_format: GradientInterpolation{
+                color_space: GradientColorSpace::Oklch,
+                hue_interpol: HueInterpolation::Longer
+            }
+        }
+    }
+}
+
+impl TestCase for GradientOklchAlpha {
+    fn render(
+        &mut self,
+        _renderer: &mut GlesRenderer,
+        size: Size<i32, Physical>,
+    ) -> Vec<Box<dyn RenderElement<GlesRenderer>>> {
+        let (a, b) = (size.w / 6, size.h / 3);
+        let size = (size.w - a * 2, size.h - b * 2);
+        let area = Rectangle::from_loc_and_size((a, b), size).to_f64();
+
+        [BorderRenderElement::new(
+            area.size,
+            Rectangle::from_loc_and_size((0., 0.), area.size),
+            self.gradient_format,
+            [1., 0., 0., 1.],
+            [0., 1., 0., 0.],
+            0.,
+            Rectangle::from_loc_and_size((0., 0.), area.size),
+            0.,
+            CornerRadius::default(),
+            1.,
+        )
+        .with_location(area.loc)]
+        .into_iter()
+        .map(|elem| Box::new(elem) as _)
+        .collect()
+    }
+}

niri-visual-tests/src/cases/mod.rs

@@ -13,6 +13,7 @@ pub mod gradient_oklch_shorter;
 pub mod gradient_oklch_longer;
 pub mod gradient_oklch_increasing;
 pub mod gradient_oklch_decreasing;
+pub mod gradient_oklch_alpha;
 pub mod layout;
 pub mod tile;
 pub mod window;

niri-visual-tests/src/main.rs

@@ -5,6 +5,7 @@ use std::env;
 use std::sync::atomic::Ordering;
 
 use adw::prelude::{AdwApplicationWindowExt, NavigationPageExt};
+use cases::gradient_oklch_alpha::GradientOklchAlpha;
 use cases::tile::Tile;
 use cases::window::Window;
 use gtk::prelude::{
@@ -126,6 +127,7 @@ fn build_ui(app: &adw::Application) {
     s.add(GradientOklchLonger::new, "Gradient - Oklch Longer");
     s.add(GradientOklchIncreasing::new, "Gradient - Oklch Increasing");
     s.add(GradientOklchDecreasing::new, "Gradient - Oklch Decreasing");
+    s.add(GradientOklchAlpha::new, "Gradient - Alpha");
 
     let content_headerbar = adw::HeaderBar::new();