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LibWeb: Fix "background-clip: text" for elements nested in scrollable

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Instead of carrying the display list for a mask in each command that
might potentially be affected by "background-clip: text", this change
introduces a new AddMask command that is applied once for all
background layers within one box.

The new AddMask command includes a rectangle for the mask destination
that is translated by the corresponding scroll offset.

Fixes https://github.com/LadybirdBrowser/ladybird/issues/857
This commit is contained in:
Aliaksandr Kalenik 2024-08-06 15:26:47 +03:00 • committed by Alexander Kalenik
commit a8f4ea5226
Notes: github-actions[bot] 2024-08-06 19:15:33 +00:00
19 changed files with 135 additions and 97 deletions
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4
Userland/Libraries/LibWeb/CSS/StyleValues/ConicGradientStyleValue.cpp
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@ -42,12 +42,12 @@ void ConicGradientStyleValue::resolve_for_size(Layout::NodeWithStyleAndBoxModelM
m_resolved->position = m_properties.position->resolved(node, CSSPixelRect { { 0, 0 }, size });
}
void ConicGradientStyleValue::paint(PaintContext& context, DevicePixelRect const& dest_rect, CSS::ImageRendering, RefPtr<Painting::DisplayList> text_clip) const
void ConicGradientStyleValue::paint(PaintContext& context, DevicePixelRect const& dest_rect, CSS::ImageRendering) const
{
VERIFY(m_resolved.has_value());
auto destination_rect = dest_rect.to_type<int>();
auto position = context.rounded_device_point(m_resolved->position).to_type<int>();
context.display_list_recorder().fill_rect_with_conic_gradient(destination_rect, m_resolved->data, position, text_clip);
context.display_list_recorder().fill_rect_with_conic_gradient(destination_rect, m_resolved->data, position);
}
bool ConicGradientStyleValue::equals(StyleValue const& other) const