/***********************************************************************
	Scrollbar
***********************************************************************/
class Scrollbar : public Window
{
	float getDocumentSize() const;
	float getPageSize() const;
	float getStepSize() const;
	float getOverlapSize() const;
	float getScrollPosition() const;

	void setDocumentSize(float document_size);
	void setPageSize(float page_size);
	void setStepSize(float step_size);
	void setOverlapSize(float overlap_size);
	void setScrollPosition(float position);
};