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serenity/Userland/Libraries/LibWeb/Painting/GradientPainting.h
MacDue 7e21fe61b4 LibWeb: Paint repeating-conic-gradient()s
Shares the same machinery as linear-gradient()s so this is quite easy.
2022-11-07 13:13:22 +00:00

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C++

/*
* Copyright (c) 2022, MacDue <macdue@dueutil.tech>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#pragma once
#include <AK/Span.h>
#include <AK/Vector.h>
#include <LibGfx/Color.h>
#include <LibWeb/Forward.h>
#include <LibWeb/Painting/PaintContext.h>
namespace Web::Painting {
struct ColorStop {
Gfx::Color color;
float position = AK::NaN<float>;
Optional<float> transition_hint = {};
};
using ColorStopList = Vector<ColorStop, 4>;
struct ColorStopData {
ColorStopList list;
Optional<float> repeat_length;
};
struct LinearGradientData {
float gradient_angle;
ColorStopData color_stops;
};
struct ConicGradientData {
float start_angle;
ColorStopData color_stops;
};
LinearGradientData resolve_linear_gradient_data(Layout::Node const&, Gfx::FloatSize const&, CSS::LinearGradientStyleValue const&);
ConicGradientData resolve_conic_gradient_data(Layout::Node const&, CSS::ConicGradientStyleValue const&);
void paint_linear_gradient(PaintContext&, Gfx::IntRect const&, LinearGradientData const&);
void paint_conic_gradient(PaintContext&, Gfx::IntRect const&, ConicGradientData const&, Gfx::IntPoint position);
}