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LibWeb: Handle degenerate radial gradients

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MacDue 2022-11-13 15:30:36 +00:00 • committed by Sam Atkins
parent 476acae04f
commit 65acfe6c60
2 changed files with 35 additions and 6 deletions
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10
Userland/Libraries/LibWeb/Painting/GradientPainting.cpp
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@ -220,19 +220,19 @@ public:
}
}
Gfx::Color get_color(int index) const
Gfx::Color get_color(uint64_t index) const
{
return m_gradient_line_colors[clamp(index, 0, m_gradient_line_colors.size() - 1)];
}
Gfx::Color sample_color(float loc) const
{
auto repeat_wrap_if_required = [&](int loc) {
auto repeat_wrap_if_required = [&](uint64_t loc) {
if (m_repeating)
return (loc + m_start_offset) % static_cast<int>(m_gradient_line_colors.size());
return (loc + m_start_offset) % m_gradient_line_colors.size();
return loc;
};
auto int_loc = static_cast<int>(floor(loc));
auto int_loc = static_cast<uint64_t>(floor(loc));
auto blend = loc - int_loc;
auto color = get_color(repeat_wrap_if_required(int_loc));
// Blend between the two neighbouring colors (this fixes some nasty aliasing issues at small angles)
@ -314,7 +314,7 @@ void paint_radial_gradient(PaintContext& context, Gfx::IntRect const& gradient_r
auto point = (Gfx::FloatPoint { x, y } - center_point);
auto gradient_x = point.x() / size.width();
auto gradient_y = point.y() / size.height();
return AK::sqrt(gradient_x * gradient_x + gradient_y * gradient_y) * size.width();
return AK::sqrt(gradient_x * gradient_x + gradient_y * gradient_y) * max_visible_gradient;
});
}