Add key command for engine CPU timer.

CHANGELOG.md

@@ -8,6 +8,7 @@ In this document, Mod is Ctrl on Windows/Linux and Cmd on Mac.
 - Automatically unzip update on Mac.
 - Stop worker threads when engine is paused to save CPU.
 - Hide menu and scrollbars when fullscreen.
+- Add key command (F3) for engine CPU meter.
 - Core
 	- Fix sustain pedal release bug when using polyphonic mode in MIDI-CV.
 - API

src/app/MenuBar.cpp

@@ -477,7 +477,8 @@ struct EngineButton : MenuButton {
 
 		CpuMeterItem* cpuMeterItem = new CpuMeterItem;
 		cpuMeterItem->text = "CPU meter";
-		cpuMeterItem->rightText = CHECKMARK(settings::cpuMeter);
+		cpuMeterItem->rightText = "F3 ";
+		cpuMeterItem->rightText += CHECKMARK(settings::cpuMeter);
 		menu->addChild(cpuMeterItem);
 
 		SampleRateItem* sampleRateItem = new SampleRateItem;

src/app/Scene.cpp

@@ -148,6 +148,12 @@ void Scene::onHoverKey(const event::HoverKey& e) {
 					e.consume(this);
 				}
 			} break;
+			case GLFW_KEY_F3: {
+				if ((e.mods & RACK_MOD_MASK) == 0) {
+					settings::cpuMeter ^= true;
+					e.consume(this);
+				}
+			} break;
 			case GLFW_KEY_F11: {
 				if ((e.mods & RACK_MOD_MASK) == 0) {
 					APP->window->setFullScreen(!APP->window->isFullScreen());