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
|
|
|
|
#include <LibGUI/GWidget.h>
|
|
|
|
class GLazyWidget : public GWidget {
|
|
C_OBJECT(GLazyWidget)
|
|
public:
|
|
virtual ~GLazyWidget() override;
|
|
|
|
Function<void(GLazyWidget&)> on_first_show;
|
|
|
|
protected:
|
|
explicit GLazyWidget(GWidget* parent = nullptr);
|
|
|
|
private:
|
|
virtual void show_event(GShowEvent&) override;
|
|
|
|
bool m_has_been_shown { false };
|
|
};
|