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LibGUI: Only dispatch Leave if the now-hovered widget isn't a child
Without this change, when the mouse starts hovering over a child widget, the parent would receive a Leave event despite the parent widget not losing mouse hover.
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444ed56521
commit
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3 changed files with 19 additions and 1 deletions
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@ -1138,4 +1138,20 @@ bool Widget::is_visible_for_timer_purposes() const
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return is_visible() && Object::is_visible_for_timer_purposes();
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}
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bool Widget::is_parent_of(Widget const* widget) const
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{
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if (widget == nullptr)
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return false;
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Widget const* current_widget = widget->parent_widget();
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while (current_widget != nullptr) {
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if (current_widget == this)
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return true;
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current_widget = current_widget->parent_widget();
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}
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return false;
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}
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}
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@ -280,6 +280,8 @@ public:
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bool has_pending_drop() const;
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bool is_parent_of(Widget const*) const;
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protected:
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Widget();
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@ -802,7 +802,7 @@ void Window::set_hovered_widget(Widget* widget)
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if (widget == m_hovered_widget)
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return;
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if (m_hovered_widget)
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if (m_hovered_widget && !m_hovered_widget->is_parent_of(widget))
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Core::EventLoop::current().post_event(*m_hovered_widget, make<Event>(Event::Leave));
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m_hovered_widget = widget;
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