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LibWeb: Move mouse event and label logic from layout to painting tree

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Input events have nothing to do with layout, so let's not send them to
layout nodes.

The job of Paintable starts to become clear. It represents a paintable
item that can be rendered into the viewport, which means it can also
be targeted by the mouse cursor.
This commit is contained in:
Andreas Kling 2022-03-10 22:46:35 +01:00
parent ed84fbce47
commit cb0c5390ff
35 changed files with 560 additions and 429 deletions
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22
Userland/Libraries/LibWeb/Painting/Paintable.h
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@ -25,9 +25,22 @@ public:
virtual void before_children_paint(PaintContext&, PaintPhase) const { }
virtual void after_children_paint(PaintContext&, PaintPhase) const { }
virtual bool wants_mouse_events() const { return false; }
virtual void handle_mousedown(Badge<EventHandler>, const Gfx::IntPoint&, unsigned button, unsigned modifiers);
virtual void handle_mouseup(Badge<EventHandler>, const Gfx::IntPoint&, unsigned button, unsigned modifiers);
virtual void handle_mousemove(Badge<EventHandler>, const Gfx::IntPoint&, unsigned buttons, unsigned modifiers);
virtual bool handle_mousewheel(Badge<EventHandler>, const Gfx::IntPoint&, unsigned buttons, unsigned modifiers, int wheel_delta_x, int wheel_delta_y);
Layout::Node const& layout_node() const { return m_layout_node; }
Layout::Node& layout_node() { return const_cast<Layout::Node&>(m_layout_node); }
auto const& computed_values() const { return m_layout_node.computed_values(); }
HTML::BrowsingContext const& browsing_context() const { return m_layout_node.browsing_context(); }
HTML::BrowsingContext& browsing_context() { return layout_node().browsing_context(); }
void set_needs_display() const { const_cast<Layout::Node&>(m_layout_node).set_needs_display(); }
protected:
explicit Paintable(Layout::Node const& layout_node)
: m_layout_node(layout_node)
@ -47,6 +60,7 @@ public:
bool is_visible() const { return layout_box().is_visible(); }
Layout::Box& layout_box() { return static_cast<Layout::Box&>(Paintable::layout_node()); }
Layout::Box const& layout_box() const { return static_cast<Layout::Box const&>(Paintable::layout_node()); }
auto const& box_model() const { return layout_box().box_model(); }
@ -134,7 +148,10 @@ public:
StackingContext* enclosing_stacking_context();
DOM::Node const* dom_node() const { return layout_box().dom_node(); }
DOM::Node* dom_node() { return layout_box().dom_node(); }
DOM::Document const& document() const { return layout_box().document(); }
DOM::Document& document() { return layout_box().document(); }
virtual void before_children_paint(PaintContext&, PaintPhase) const override;
virtual void after_children_paint(PaintContext&, PaintPhase) const override;
@ -160,6 +177,9 @@ public:
}
virtual ~PaintableWithLines() override;
Layout::BlockContainer const& layout_box() const;
Layout::BlockContainer& layout_box();
Vector<Layout::LineBox> const& line_boxes() const { return m_line_boxes; }
void set_line_boxes(Vector<Layout::LineBox>&& line_boxes) { m_line_boxes = move(line_boxes); }
@ -175,6 +195,8 @@ public:
}
virtual void paint(PaintContext&, PaintPhase) const override;
virtual bool wants_mouse_events() const override { return false; }
virtual bool handle_mousewheel(Badge<EventHandler>, const Gfx::IntPoint&, unsigned buttons, unsigned modifiers, int wheel_delta_x, int wheel_delta_y) override;
private:
PaintableWithLines(Layout::BlockContainer const&);