This class is a wrapper around KisSliderSpinBox, a spinbox in which

you can click and drag to set the value, with a slider like bar displayed inside. The widget itself is accessed with the widget() function.

The value can be set by click and dragging with the mouse or pen or by typing in with the keyboard. To enter the edit mode, in which the keyboard can be used, one has to right-click inside the spinbox or click and hold the pointer inside or press the enter key. To leave the edit mode, one can press the enter key again, in which case the value is committed, or press the escape key, in which case the value is rejected.

When dragging with the pointer, one can fine tune the value by dragging far away vertically from the spinbox. The farther the pointer is, the slower the value will change. If the pointer is inside the spinbox plus a certain margin, the value will not be scaled. By pressing the shift key the slow down will be even more pronounced and by pressing the control key the value will snap to the increment set by setFastSliderStep. The two keys can be used at the same time.

A "soft range" can be set to make the slider display only a sub-range of the spinbox range. This way one can have a large range but display and set with the pointer and with more precision only the most commonly used sub-set of values. A value outside the "soft range" can be set by entering the edit mode and using the keyboard. The "soft range" is considered valid if the "soft maximum" is greater than the "soft minimum".