Resize mouse spotlight based on RackWidget zoom level.

src/app/RackWidget.cpp

@@ -125,10 +125,15 @@ void RackWidget::draw(const DrawArgs& args) {
 
 	// Draw translucent dark rectangle
 	if (b < 1.f) {
+		// Get zoom level
+		float t[6];
+		nvgCurrentTransform(args.vg, t);
+		float zoom = t[3];
+		float radius = 300.0 / zoom;
+		float brightness = 0.2f;
+		// Draw mouse spotlight
 		nvgBeginPath(args.vg);
 		nvgRect(args.vg, 0.0, 0.0, VEC_ARGS(box.size));
-		const float radius = 300.0;
-		const float brightness = 0.2f;
 		nvgFillPaint(args.vg, nvgRadialGradient(args.vg, VEC_ARGS(internal->mousePos), 0.0, radius, nvgRGBAf(0, 0, 0, 1.f - b - brightness), nvgRGBAf(0, 0, 0, 1.f - b)));
 		nvgFill(args.vg);
 	}