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LibWeb: Make hit testing return a { paintable, offset }

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Everything related to hit testing is better off using the painting tree.
The thing being mousemoved over is a paintable, so let's hand that out
directly instead of the corresponding layout node.
This commit is contained in:
Andreas Kling 2022-03-10 22:58:19 +01:00
parent cb0c5390ff
commit f017c1c064
5 changed files with 46 additions and 49 deletions
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8
Userland/Libraries/LibWeb/Layout/BlockContainer.cpp
View file

@ -42,16 +42,16 @@ HitTestResult BlockContainer::hit_test(const Gfx::IntPoint& position, HitTestTyp
if (enclosing_int_rect(fragment.absolute_rect()).contains(position)) {
if (is<BlockContainer>(fragment.layout_node()))
return verify_cast<BlockContainer>(fragment.layout_node()).hit_test(position, type);
return { fragment.layout_node(), fragment.text_index_at(position.x()) };
return { fragment.layout_node().paintable(), fragment.text_index_at(position.x()) };
}
if (fragment.absolute_rect().top() <= position.y())
last_good_candidate = { fragment.layout_node(), fragment.text_index_at(position.x()) };
last_good_candidate = { fragment.layout_node().paintable(), fragment.text_index_at(position.x()) };
}
}
if (type == HitTestType::TextCursor && last_good_candidate.layout_node)
if (type == HitTestType::TextCursor && last_good_candidate.paintable)
return last_good_candidate;
return { paint_box()->absolute_border_box_rect().contains(position.x(), position.y()) ? this : nullptr };
return { paint_box()->absolute_border_box_rect().contains(position.x(), position.y()) ? paintable() : nullptr };
}
bool BlockContainer::is_scrollable() const

4
Userland/Libraries/LibWeb/Layout/Box.cpp
View file

@ -62,10 +62,10 @@ HitTestResult Box::hit_test(const Gfx::IntPoint& position, HitTestType type) con
// FIXME: It would be nice if we could confidently skip over hit testing
// parts of the layout tree, but currently we can't just check
// m_rect.contains() since inline text rects can't be trusted..
HitTestResult result { paint_box()->absolute_border_box_rect().contains(position.x(), position.y()) ? this : nullptr };
HitTestResult result { paint_box()->absolute_border_box_rect().contains(position.x(), position.y()) ? paint_box() : nullptr };
for_each_child_in_paint_order([&](auto& child) {
auto child_result = child.hit_test(position, type);
if (child_result.layout_node)
if (child_result.paintable)
result = child_result;
});
return result;

2
Userland/Libraries/LibWeb/Layout/Node.h
View file

@ -27,7 +27,7 @@ enum class LayoutMode {
};
struct HitTestResult {
RefPtr<Node> layout_node;
RefPtr<Painting::Paintable> paintable;
int index_in_node { 0 };
enum InternalPosition {