Method onAction

src/app/MenuBar.cpp:685–715

struct EngineButton : MenuButton {
	void onAction(const ActionEvent& e) override {
		ui::Menu* menu = createMenu();
		menu->cornerFlags = BND_CORNER_TOP;
		menu->box.pos = getAbsoluteOffset(math::Vec(0, box.size.y));

		std::string cpuMeterText = widget::getKeyCommandName(GLFW_KEY_F3, 0);
		if (settings::cpuMeter)
			cpuMeterText += " " CHECKMARK_STRING;
		menu->addChild(createMenuItem(string::translate("MenuBar.engine.cpuMeter"), cpuMeterText, [=]() {
			settings::cpuMeter ^= true;
		}));

		menu->addChild(createMenuItem<SampleRateItem>(string::translate("MenuBar.engine.sampleRate"), RIGHT_ARROW));

		menu->addChild(createSubmenuItem(string::translate("MenuBar.engine.threads"), string::f("%d", settings::threadCount), [=](ui::Menu* menu) {
			// BUG This assumes SMT is enabled.
			int cores = system::getLogicalCoreCount() / 2;

			for (int i = 1; i <= 2 * cores; i++) {
				std::string rightText;
				if (i == cores)
					rightText += string::translate("MenuBar.engine.threads.most");
				else if (i == 1)
					rightText += string::translate("MenuBar.engine.threads.lowest");
				menu->addChild(createCheckMenuItem(string::f("%d", i), rightText,
					[=]() {return settings::threadCount == i;},
					[=]() {settings::threadCount = i;}
				));
			}
		}));
	}
};