diff options
Diffstat (limited to 'src/app/Knob.cpp')
| -rw-r--r-- | src/app/Knob.cpp | 30 |
1 files changed, 23 insertions, 7 deletions
diff --git a/src/app/Knob.cpp b/src/app/Knob.cpp index 7e04f8fa..f5d997a7 100644 --- a/src/app/Knob.cpp +++ b/src/app/Knob.cpp @@ -12,6 +12,22 @@ namespace app { static const float KNOB_SENSITIVITY = 0.0015f; +struct Knob::Internal { + /** Value of the knob before dragging. */ + float oldValue = 0.f; + /** Fractional value between the param's value and the dragged knob position. */ + float snapDelta = 0.f; +}; + + +Knob::Knob() { + internal = new Internal; +} + +Knob::~Knob() { + delete internal; +} + void Knob::initParamQuantity() { ParamWidget::initParamQuantity(); engine::ParamQuantity* pq = getParamQuantity(); @@ -43,8 +59,8 @@ void Knob::onDragStart(const event::DragStart& e) { engine::ParamQuantity* pq = getParamQuantity(); if (pq) { - oldValue = pq->getSmoothValue(); - snapDelta = 0.f; + internal->oldValue = pq->getSmoothValue(); + internal->snapDelta = 0.f; } APP->window->cursorLock(); @@ -59,13 +75,13 @@ void Knob::onDragEnd(const event::DragEnd& e) { engine::ParamQuantity* pq = getParamQuantity(); if (pq) { float newValue = pq->getSmoothValue(); - if (oldValue != newValue) { + if (internal->oldValue != newValue) { // Push ParamChange history action history::ParamChange* h = new history::ParamChange; h->name = "move knob"; h->moduleId = module->id; h->paramId = paramId; - h->oldValue = oldValue; + h->oldValue = internal->oldValue; h->newValue = newValue; APP->history->push(h); } @@ -103,9 +119,9 @@ void Knob::onDragMove(const event::DragMove& e) { if (pq->snapEnabled) { // Replace delta with an accumulated delta since the last integer knob. - snapDelta += delta; - delta = std::trunc(snapDelta); - snapDelta -= delta; + internal->snapDelta += delta; + delta = std::trunc(internal->snapDelta); + internal->snapDelta -= delta; } // Set value |