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183f7c9830
Here's how you can use this to speed up startup time:
auto widget = GLazyWidget::construct();
widget->on_first_show = [](auto& self) {
self.set_layout(...);
...
};
Basically, it allows you to delay building the widget subtree until
it's shown for the first time.
19 lines
367 B
C++
19 lines
367 B
C++
#pragma once
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#include <LibGUI/GWidget.h>
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class GLazyWidget : public GWidget {
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C_OBJECT(GLazyWidget)
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public:
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virtual ~GLazyWidget() override;
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Function<void(GLazyWidget&)> on_first_show;
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protected:
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explicit GLazyWidget(GWidget* parent = nullptr);
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private:
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virtual void show_event(GShowEvent&) override;
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bool m_has_been_shown { false };
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};
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