From 746d78364cef2542ae1d8545f98a5b47470da59d Mon Sep 17 00:00:00 2001
From: YohYamasaki <y.yamasaki@tuta.com>
Date: Tue, 19 May 2026 13:16:31 +0900
Subject: [PATCH] Add color converter and debug node to use graphic

---
 node-graph/libraries/core-types/src/list.rs   |  3 +++
 .../libraries/graphic-types/src/graphic.rs    |  8 +++++-
 node-graph/nodes/math/src/lib.rs              | 25 ++++++++++++++++++-
 3 files changed, 34 insertions(+), 2 deletions(-)

diff --git a/node-graph/libraries/core-types/src/list.rs b/node-graph/libraries/core-types/src/list.rs
index 7a7df7d6ca..81f57435dd 100644
--- a/node-graph/libraries/core-types/src/list.rs
+++ b/node-graph/libraries/core-types/src/list.rs
@@ -80,6 +80,9 @@ pub const ATTR_GRADIENT_TYPE: &str = "gradient_type";
 /// List<Graphic> data for fill.
 pub const ATTR_FILL_GRAPHIC: &str = "fill_graphic";
 
+/// List<Graphic> data for stroke.
+pub const ATTR_STROKE_PAINT_GRAPHIC: &str = "stroke_paint_graphic";
+
 // ========================
 // TRAIT: AnyAttributeValue
 // ========================
diff --git a/node-graph/libraries/graphic-types/src/graphic.rs b/node-graph/libraries/graphic-types/src/graphic.rs
index 4d92e302cf..1bfc8195bf 100644
--- a/node-graph/libraries/graphic-types/src/graphic.rs
+++ b/node-graph/libraries/graphic-types/src/graphic.rs
@@ -171,7 +171,7 @@ fn flatten_graphic_list<T>(content: List<Graphic>, extract_variant: fn(Graphic)
 }
 
 /// Converts a `Fill` enum into the `List<Graphic>` representation used as paint storage.
-/// TODO: Remove once all paint sources flow through `List<Graphic>` directly without going through the `Fill` enum.
+/// TODO: Remove once all fill paint sources flow through `List<Graphic>` directly without going through the `Fill` enum.
 pub fn fill_to_graphic_list(fill: &Fill) -> Option<List<Graphic>> {
 	match fill {
 		Fill::None => None,
@@ -188,6 +188,12 @@ pub fn fill_to_graphic_list(fill: &Fill) -> Option<List<Graphic>> {
 	}
 }
 
+/// Converts a `Color` into the `List<Graphic>` representation used as paint storage.
+/// TODO: Remove once all stroke paint sources flow through `List<Graphic>` directly without going through `Stroke.color`.
+pub fn color_to_graphic_list(color: Option<Color>) -> Option<List<Graphic>> {
+	color.as_ref().map(|color| List::new_from_element((*color).into()))
+}
+
 /// Maps from a concrete element type to its corresponding `Graphic` enum variant,
 /// enabling type-directed casting of typed `List`s from a `Graphic` value.
 pub trait TryFromGraphic: Clone + Sized {
diff --git a/node-graph/nodes/math/src/lib.rs b/node-graph/nodes/math/src/lib.rs
index 43ffa38619..5843552006 100644
--- a/node-graph/nodes/math/src/lib.rs
+++ b/node-graph/nodes/math/src/lib.rs
@@ -1,5 +1,5 @@
 use core_types::Context;
-use core_types::list::{ATTR_FILL_GRAPHIC, List};
+use core_types::list::{ATTR_FILL_GRAPHIC, ATTR_STROKE_PAINT_GRAPHIC, List};
 use core_types::registry::types::{Fraction, Percentage, PixelSize};
 use core_types::transform::Footprint;
 use core_types::{Color, Ctx, num_traits};
@@ -1008,6 +1008,29 @@ fn fill_graphic<P: IntoGraphicList + 'n + Send>(
 	vectors
 }
 
+/// Sets the `stroke_paint_graphic` attribute on each item of the input vector list.
+/// Used for testing of gradient and clipping-based stroke rendering until the proper Stroke node refactor lands.
+#[node_macro::node(category("Debug"))]
+fn stroke_paint_graphic<P: IntoGraphicList + 'n + Send>(
+	_: impl Ctx,
+	mut vectors: List<Vector>,
+	#[implementations(
+        List<Graphic>,
+        List<Vector>,
+        List<Raster<CPU>>,
+        List<Raster<GPU>>,
+        List<Color>,
+        List<GradientStops>,
+    )]
+	stroke_paint_graphic: P,
+) -> List<Vector> {
+	let paint_list = stroke_paint_graphic.into_graphic_list();
+	for row_idx in 0..vectors.len() {
+		vectors.set_attribute(ATTR_STROKE_PAINT_GRAPHIC, row_idx, paint_list.clone());
+	}
+	vectors
+}
+
 #[cfg(test)]
 mod test {
 	use super::*;