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Add SVG import support for gradients with gradientUnits="userSpaceOnUse" #3741

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Merged
Keavon merged 3 commits into from
Feb 13, 2026
Merged

Add SVG import support for gradients with gradientUnits="userSpaceOnUse" #3741

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a5db31d
fix
jsjgdh Feb 9, 2026
e62e735
error corrected
jsjgdh Feb 9, 2026
1b27da0
Cleanup
Keavon Feb 13, 2026
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57 changes: 16 additions & 41 deletions editor/src/messages/portfolio/document/graph_operation/graph_operation_message_handler.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -388,7 +388,7 @@ fn import_usvg_node(modify_inputs: &mut ModifyInputsContext, node: &usvg::Node,

if let Some(fill) = path.fill() {
let bounds_transform = DAffine2::from_scale_angle_translation(bounds[1] - bounds[0], 0., bounds[0]);
apply_usvg_fill(fill, modify_inputs, transform * usvg_transform(node.abs_transform()), bounds_transform);
apply_usvg_fill(fill, modify_inputs, bounds_transform);
}
if let Some(stroke) = path.stroke() {
apply_usvg_stroke(stroke, modify_inputs, transform * usvg_transform(node.abs_transform()));
Expand Down Expand Up @@ -432,63 +432,38 @@ fn apply_usvg_stroke(stroke: &usvg::Stroke, modify_inputs: &mut ModifyInputsCont
}
}

fn apply_usvg_fill(fill: &usvg::Fill, modify_inputs: &mut ModifyInputsContext, transform: DAffine2, bounds_transform: DAffine2) {
fn apply_usvg_fill(fill: &usvg::Fill, modify_inputs: &mut ModifyInputsContext, bounds_transform: DAffine2) {
modify_inputs.fill_set(match &fill.paint() {
usvg::Paint::Color(color) => Fill::solid(usvg_color(*color, fill.opacity().get())),
usvg::Paint::LinearGradient(linear) => {
let local = [DVec2::new(linear.x1() as f64, linear.y1() as f64), DVec2::new(linear.x2() as f64, linear.y2() as f64)];
let gradient_transform = usvg_transform(linear.transform());
let (start, end) = (DVec2::new(linear.x1() as f64, linear.y1() as f64), DVec2::new(linear.x2() as f64, linear.y2() as f64));
let (start, end) = (gradient_transform.transform_point2(start), gradient_transform.transform_point2(end));
let (start, end) = (bounds_transform.inverse().transform_point2(start), bounds_transform.inverse().transform_point2(end));

// TODO: fix this
// let to_doc_transform = if linear.base.units() == usvg::Units::UserSpaceOnUse {
// transform
// } else {
// transformed_bound_transform
// };
let to_doc_transform = transform;
let to_doc = to_doc_transform * usvg_transform(linear.transform());
let gradient_type = GradientType::Linear;

let document = [to_doc.transform_point2(local[0]), to_doc.transform_point2(local[1])];
let layer = [transform.inverse().transform_point2(document[0]), transform.inverse().transform_point2(document[1])];

let [start, end] = [bounds_transform.inverse().transform_point2(layer[0]), bounds_transform.inverse().transform_point2(layer[1])];
let stops = linear.stops().iter().map(|stop| (stop.offset().get() as f64, usvg_color(stop.color(), stop.opacity().get()))).collect();
let stops = GradientStops::new(stops);

Fill::Gradient(Gradient {
start,
end,
gradient_type: GradientType::Linear,
stops,
})
Fill::Gradient(Gradient { start, end, gradient_type, stops })
}
usvg::Paint::RadialGradient(radial) => {
let local = [DVec2::new(radial.cx() as f64, radial.cy() as f64), DVec2::new(radial.fx() as f64, radial.fy() as f64)];

// TODO: fix this
// let to_doc_transform = if radial.base.units == usvg::Units::UserSpaceOnUse {
// transform
// } else {
// transformed_bound_transform
// };
let to_doc_transform = transform;
let to_doc = to_doc_transform * usvg_transform(radial.transform());
let gradient_transform = usvg_transform(radial.transform());
let center = DVec2::new(radial.cx() as f64, radial.cy() as f64);
let edge = center + DVec2::X * radial.r().get() as f64;
let (start, end) = (gradient_transform.transform_point2(center), gradient_transform.transform_point2(edge));
let (start, end) = (bounds_transform.inverse().transform_point2(start), bounds_transform.inverse().transform_point2(end));

let document = [to_doc.transform_point2(local[0]), to_doc.transform_point2(local[1])];
let layer = [transform.inverse().transform_point2(document[0]), transform.inverse().transform_point2(document[1])];
let gradient_type = GradientType::Radial;

let [start, end] = [bounds_transform.inverse().transform_point2(layer[0]), bounds_transform.inverse().transform_point2(layer[1])];
let stops = radial.stops().iter().map(|stop| (stop.offset().get() as f64, usvg_color(stop.color(), stop.opacity().get()))).collect();
let stops = GradientStops::new(stops);

Fill::Gradient(Gradient {
start,
end,
gradient_type: GradientType::Radial,
stops,
})
Fill::Gradient(Gradient { start, end, gradient_type, stops })
}
usvg::Paint::Pattern(_) => {
warn!("Skip pattern");
warn!("SVG patterns are not currently supported");
return;
}
});
Expand Down
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