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LibWeb: Ensure scroll offsets and clip rects updated before hit-testing

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Hit-testing relies on updated clip rectangles and containing scroll
offsets, so it's necessary to ensure that paintables have these elements
updated.

This also removes the enclosing scroll offsets update from
`Internals::hit_test()`, as it is no longer needed.
This commit is contained in:
Aliaksandr Kalenik 2024-01-30 09:50:56 +01:00 committed by Andreas Kling
parent d27b376699
commit d3b983b201
Notes: sideshowbarker 2024-07-16 22:18:54 +09:00 
Author: https://github.com/kalenikaliaksandr
Commit: https://github.com/SerenityOS/serenity/commit/d3b983b201
Pull-request: https://github.com/SerenityOS/serenity/pull/23012
2 changed files with 5 additions and 4 deletions
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3
Userland/Libraries/LibWeb/Internals/Internals.cpp
View File

@ -52,9 +52,6 @@ JS::Object* Internals::hit_test(double x, double y)
// for stacking context traversal, might not exist if this call occurs between the tear_down_layout_tree()
// and update_layout() calls
active_document->update_layout();
HashMap<Painting::PaintableBox const*, Painting::ViewportPaintable::ScrollFrame> scroll_frames;
// NOTE: Make sure that paintables have updated scroll offsets
active_document->paintable()->assign_scroll_frame_ids(scroll_frames);
auto result = active_document->paintable_box()->hit_test({ x, y }, Painting::HitTestType::Exact);
if (result.has_value()) {
auto hit_tеsting_result = JS::Object::create(realm(), nullptr);

6
Userland/Libraries/LibWeb/Painting/PaintableBox.cpp
View File

@ -684,7 +684,11 @@ Optional<HitTestResult> PaintableBox::hit_test(CSSPixelPoint position, HitTestTy
return {};
if (layout_box().is_viewport()) {
const_cast<ViewportPaintable&>(static_cast<ViewportPaintable const&>(*this)).build_stacking_context_tree_if_needed();
auto& viewport_paintable = const_cast<ViewportPaintable&>(static_cast<ViewportPaintable const&>(*this));
viewport_paintable.build_stacking_context_tree_if_needed();
HashMap<Painting::PaintableBox const*, Painting::ViewportPaintable::ScrollFrame> scroll_frames;
viewport_paintable.assign_scroll_frame_ids(scroll_frames);
viewport_paintable.assign_clip_rectangles();
return stacking_context()->hit_test(position, type);
}