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LibWeb: Return whether handle_mousewheel was handled

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We try scrolling a Node with the handle_mousewheel event, but if it
isn't scrollable, the event should be passed back up to the page
host. This is the first step in that process.
This commit is contained in:
Angus Gibson 2021-03-02 08:36:58 +11:00 • committed by Andreas Kling
parent 17e6287333
commit e9c1d9c89a
5 changed files with 13 additions and 7 deletions
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7
Userland/Libraries/LibWeb/Layout/Node.cpp
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@ -322,15 +322,18 @@ void Node::handle_mousemove(Badge<EventHandler>, const Gfx::IntPoint&, unsigned,
{
}
void Node::handle_mousewheel(Badge<EventHandler>, const Gfx::IntPoint&, unsigned, unsigned, int wheel_delta)
bool Node::handle_mousewheel(Badge<EventHandler>, const Gfx::IntPoint&, unsigned, unsigned, int wheel_delta)
{
if (auto* containing_block = this->containing_block()) {
if (!containing_block->is_scrollable())
return;
return false;
auto new_offset = containing_block->scroll_offset();
new_offset.move_by(0, wheel_delta);
containing_block->set_scroll_offset(new_offset);
return true;
}
return false;
}
bool Node::is_root_element() const