#ifndef _COOLSB_INTERNAL_INCLUDED
#define _COOLSB_INTERNAL_INCLUDED

#ifdef __cplusplus
extern "C"{
#endif

#include <windows.h>

//
//	SCROLLBAR datatype. There are two of these structures per window
//
typedef struct 
{
	UINT		fScrollFlags;		//flags
	BOOL		fScrollVisible;		//if this scrollbar visible?
	SCROLLINFO	scrollInfo;			//positional data (range, position, page size etc)
	
	int			nArrowLength;		//perpendicular size (height of a horizontal, width of a vertical)
	int			nArrowWidth;		//parallel size (width of horz, height of vert)

	//data for inserted buttons
	SCROLLBUT	sbButtons[MAX_COOLSB_BUTS];
	int			nButtons;
	int			nButSizeBefore;		//size to the left / above the bar
	int			nButSizeAfter;		//size to the right / below the bar

	BOOL		fButVisibleBefore;	//if the buttons to the left are visible
	BOOL		fButVisibleAfter;	//if the buttons to the right are visible

	int			nBarType;			//SB_HORZ / SB_VERT

	UINT		fFlatScrollbar;		//do we display flat scrollbars?
	int			nMinThumbSize;

} SCROLLBAR;

//
//	Container structure for a cool scrollbar window.
//
typedef struct
{
	UINT bars;				//which of the scrollbars do we handle? SB_VERT / SB_HORZ / SB_BOTH

	SCROLLBAR sbarHorz;		//one scrollbar structure each for 
	SCROLLBAR sbarVert;		//the horizontal and vertical scrollbars

	BOOL fThumbTracking;	// are we currently thumb-tracking??
	BOOL fLeftScrollbar;	// support the WS_EX_LEFTSCROLLBAR style

	HWND hwndToolTip;		// tooltip support!!!

	//size of the window borders
	int cxLeftEdge, cxRightEdge;
	int cyTopEdge,  cyBottomEdge;

	// To prevent calling original WindowProc in response
	// to our own temporary style change (fixes TreeView problem)
	BOOL bPreventStyleChange;

} SCROLLWND;


//
//	PRIVATE INTERNAL FUNCTIONS
//
SCROLLWND *GetScrollWndFromHwnd(HWND hwnd);
#define InvertCOLORREF(col) ((~col) & 0x00ffffff)

#define COOLSB_TIMERID1			65533		//initial timer
#define COOLSB_TIMERID2			65534		//scroll message timer
#define COOLSB_TIMERID3			-14			//mouse hover timer
#define COOLSB_TIMERINTERVAL1	300
#define COOLSB_TIMERINTERVAL2	55
#define COOLSB_TIMERINTERVAL3	20			//mouse hover time


//
//	direction: 0 - same axis as scrollbar (i.e.  width of a horizontal bar)
//             1 - perpendicular dimesion (i.e. height of a horizontal bar)
//
#define SM_CXVERTSB 1
#define SM_CYVERTSB 0
#define SM_CXHORZSB 0
#define SM_CYHORZSB 1
#define SM_SCROLL_WIDTH	1
#define SM_SCROLL_LENGTH 0


#ifdef __cplusplus
}
#endif

#endif