static void Button_tick(Button *self) {
  if(self->onTick) self->onTick();
}

Geometry pButton::minimumGeometry() {
  Font &font = pWidget::font();
  Geometry geometry = font.geometry(button.state.text);
  return { 0, 0, geometry.width + 24, geometry.height + 12 };
}

void pButton::setText(const string &text) {
  gtk_button_set_label(GTK_BUTTON(gtkWidget), text);
}

void pButton::constructor() {
  gtkWidget = gtk_button_new();
  g_signal_connect_swapped(G_OBJECT(gtkWidget), "clicked", G_CALLBACK(Button_tick), (gpointer)&button);
}