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// This Source Code Form is subject to the terms of the Mozilla Public
// License, v. 2.0. If a copy of the MPL was not distributed with this
// file, You can obtain one at http://mozilla.org/MPL/2.0/.
// external
use qt;
use usvg;
// self
use super::prelude::*;
pub fn prepare_linear(
g: &usvg::LinearGradient,
opacity: usvg::Opacity,
bbox: Rect,
brush: &mut qt::Brush,
) {
let mut grad = qt::LinearGradient::new(g.x1, g.y1, g.x2, g.y2);
prepare_base(&g.base, opacity, &mut grad);
brush.set_linear_gradient(grad);
apply_ts(&g.base, bbox, brush);
}
pub fn prepare_radial(
g: &usvg::RadialGradient,
opacity: usvg::Opacity,
bbox: Rect,
brush: &mut qt::Brush,
) {
let mut grad = qt::RadialGradient::new(g.cx, g.cy, g.fx, g.fy, *g.r);
prepare_base(&g.base, opacity, &mut grad);
brush.set_radial_gradient(grad);
apply_ts(&g.base, bbox, brush);
}
fn prepare_base(
g: &usvg::BaseGradient,
opacity: usvg::Opacity,
grad: &mut qt::Gradient,
) {
let spread_method = match g.spread_method {
usvg::SpreadMethod::Pad => qt::Spread::Pad,
usvg::SpreadMethod::Reflect => qt::Spread::Reflect,
usvg::SpreadMethod::Repeat => qt::Spread::Repeat,
};
grad.set_spread(spread_method);
for stop in &g.stops {
grad.set_color_at(
*stop.offset,
stop.color.red,
stop.color.green,
stop.color.blue,
((*stop.opacity * *opacity) * 255.0) as u8,
);
}
}
fn apply_ts(
g: &usvg::BaseGradient,
bbox: Rect,
brush: &mut qt::Brush,
) {
// We doesn't use `QGradient::setCoordinateMode` because it works incorrectly.
// https://bugreports.qt.io/browse/QTBUG-67995
if g.units == usvg::Units::ObjectBoundingBox {
let mut ts = usvg::Transform::from_bbox(bbox);
ts.append(&g.transform);
brush.set_transform(ts.to_native());
} else {
brush.set_transform(g.transform.to_native());
}
}
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