Function onMove

packages/react-aria/src/slider/useSliderThumb.ts:183–210

({deltaX, deltaY, pointerType, shiftKey})

      state.setThumbDragging(index, true);
    },
    onMove({deltaX, deltaY, pointerType, shiftKey}) {
      const {getThumbPercent, setThumbPercent, decrementThumb, incrementThumb, step, pageSize} =
        state;
      if (!trackRef.current) {
        return;
      }
      let {width, height} = trackRef.current.getBoundingClientRect();
      let size = isVertical ? height : width;

      if (currentPosition.current == null) {
        currentPosition.current = getThumbPercent(index) * size;
      }
      if (pointerType === 'keyboard') {
        if ((deltaX > 0 && reverseX) || (deltaX < 0 && !reverseX) || deltaY > 0) {
          decrementThumb(index, shiftKey ? pageSize : step);
        } else {
          incrementThumb(index, shiftKey ? pageSize : step);
        }
      } else {
        let delta = isVertical ? deltaY : deltaX;
        if (isVertical || reverseX) {
          delta = -delta;
        }

        currentPosition.current += delta;
        setThumbPercent(index, clamp(currentPosition.current / size, 0, 1));
      }
    },
    onMoveEnd() {
      state.setThumbDragging(index, false);
    }