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LibWeb: Treate SVG paintable coordinates as relative to <svg> element

Normally, paintable coordinates are relative to the nearest containing
block, but in the SVG case, since <svg> doesn't form a containing block,
we have to specialize the computation of SVGPaintable::absolute_rect().
This commit is contained in:
Andreas Kling 2022-03-24 16:06:43 +01:00
parent 88aca4c996
commit d5aca1c6c4
4 changed files with 26 additions and 6 deletions

View file

@ -5,6 +5,7 @@
*/
#include <LibWeb/Layout/ImageBox.h>
#include <LibWeb/Layout/SVGSVGBox.h>
#include <LibWeb/Painting/SVGPaintable.h>
namespace Web::Painting {
@ -35,4 +36,15 @@ void SVGPaintable::after_children_paint(PaintContext& context, PaintPhase phase)
context.svg_context().restore();
}
Gfx::FloatRect SVGPaintable::compute_absolute_rect() const
{
if (auto* svg_svg_box = layout_box().first_ancestor_of_type<Layout::SVGSVGBox>()) {
Gfx::FloatRect rect { effective_offset(), content_size() };
for (Layout::Box const* ancestor = svg_svg_box; ancestor && ancestor->paintable(); ancestor = ancestor->paintable()->containing_block())
rect.translate_by(ancestor->paint_box()->effective_offset());
return rect;
}
return PaintableBox::compute_absolute_rect();
}
}