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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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35
Userland/Libraries/LibWeb/Painting/TextPaintable.cpp
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@ -21,4 +21,39 @@ TextPaintable::TextPaintable(Layout::TextNode const& layout_node)
{
}
bool TextPaintable::wants_mouse_events() const
{
return layout_node().first_ancestor_of_type<Layout::Label>();
}
void TextPaintable::handle_mousedown(Badge<EventHandler>, const Gfx::IntPoint& position, unsigned button, unsigned)
{
auto* label = layout_node().first_ancestor_of_type<Layout::Label>();
if (!label)
return;
const_cast<Layout::Label*>(label)->handle_mousedown_on_label({}, position, button);
const_cast<HTML::BrowsingContext&>(browsing_context()).event_handler().set_mouse_event_tracking_layout_node(&const_cast<Layout::TextNode&>(layout_node()));
}
void TextPaintable::handle_mouseup(Badge<EventHandler>, const Gfx::IntPoint& position, unsigned button, unsigned)
{
auto* label = layout_node().first_ancestor_of_type<Layout::Label>();
if (!label)
return;
// NOTE: Changing the state of the DOM node may run arbitrary JS, which could disappear this node.
NonnullRefPtr protect = *this;
const_cast<Layout::Label*>(label)->handle_mouseup_on_label({}, position, button);
const_cast<HTML::BrowsingContext&>(browsing_context()).event_handler().set_mouse_event_tracking_layout_node(nullptr);
}
void TextPaintable::handle_mousemove(Badge<EventHandler>, const Gfx::IntPoint& position, unsigned button, unsigned)
{
auto* label = layout_node().first_ancestor_of_type<Layout::Label>();
if (!label)
return;
const_cast<Layout::Label*>(label)->handle_mousemove_on_label({}, position, button);
}
}