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#include "app/Knob.hpp"
namespace rack {
void Knob::onButton(event::Button &e) {
float r = box.size.x / 2;
math::Vec c = box.size.div(2);
float dist = e.pos.minus(c).norm();
if (dist <= r) {
ParamWidget::onButton(e);
}
}
void Knob::onDragStart(event::DragStart &e) {
context()->window->cursorLock();
}
void Knob::onDragEnd(event::DragEnd &e) {
context()->window->cursorUnlock();
}
void Knob::onDragMove(event::DragMove &e) {
if (quantity) {
float range;
if (quantity->isBounded()) {
range = quantity->getRange();
}
else {
// Continuous encoders scale as if their limits are +/-1
range = 2.f;
}
float delta = KNOB_SENSITIVITY * -e.mouseDelta.y * speed * range;
// Drag slower if Mod is held
if (context()->window->isModPressed())
delta /= 16.f;
quantity->moveValue(delta);
}
}
} // namespace rack
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