void MLMultiSlider::mouseWheelMove (const MouseEvent& e, const MouseWheelDetails& wheel)
{
// filter out zero motions from trackpad
if ((wheel.deltaX == 0.) && (wheel.deltaY == 0.)) return;
if(mCurrDragSlider >= 0) return;
bool doFineAdjust = e.mods.isShiftDown();
float wheelSpeed = doFineAdjust ? 0.1f : 1.f;
float wheelDirection = (wheel.isReversed) ? -1.f : 1.f;
if (isEnabled())
{
int s = getSliderUnderPoint(Vec2(e.x, e.y));
if ((s >= 0) && ! isMouseButtonDownAnywhere())
{
float currentVal = getFloatProperty(ml::textUtils::addFinalNumber(ml::Symbol("value"), s));
float minPosDelta = 0.01f;
float deltaDir = (wheel.deltaY > 0.f) ? 1.f : -1.f;
float posDelta = (wheel.deltaY + deltaDir*minPosDelta)*wheelSpeed*wheelDirection;
const float currentPos = valueToProportionOfLength (currentVal);
const float newPos = ml::clamp (currentPos + posDelta, 0.f, 1.f);
float newValue = proportionOfLengthToValue (newPos);
if(newValue != currentVal)
{
if(!isMouseWheelMoving)
{
isMouseWheelMoving = true;
beginGesture();
}
mpTimer->startTimer(kWheelTimeoutDuration);
mCurrDragSlider = s;
sendSliderAction(snapValue (newValue, false), s);
mpTimer->startTimer(kWheelTimeoutDuration);
mCurrDragSlider = -1;
}
}
}
else
{
Component::mouseWheelMove (e, wheel);
}
}
// This is copied from the Slider::Pimpl::handleAbsoluteDrag() and only here for reference.
void MoveAwayForFineAdjustmentSlider::handleAbsoluteDrag (const MouseEvent& e)
{
const float mousePos = e.position.y;
// The newPos is the current mouse position measured from the top of the
// slider. newPos /in [0.0, 1.0]
double newPos = (mousePos - sliderRegionStart) / (double) sliderRegionSize;
if (!getSliderSnapsToMousePosition())
{
const float mouseDiff = mouseDragStartPos.y - e.position.y;
newPos = valueToProportionOfLength (valueOnMouseDown)
+ mouseDiff * (1.0 / getMouseDragSensitivity());
}
else
{
if (isVertical())
// Now, newPos is measured from the bottom of the slider.
newPos = 1.0 - newPos;
}
valueWhenLastDragged = proportionOfLengthToValue (jlimit (0.0, 1.0, newPos));
}
