int WINAPI CoolSB_GetScrollPos (HWND hwnd, int nBar)
{
SCROLLINFO *mysi;
if(!(mysi = GetScrollInfoFromHwnd(hwnd, nBar)))
return GetScrollPos(hwnd, nBar);
return mysi->nPos;
}
BOOL WINAPI CoolSB_GetScrollRange(HWND hwnd, int nBar, LPINT lpMinPos, LPINT lpMaxPos)
{
if (!lpMinPos || !lpMaxPos)
return FALSE;
SCROLLINFO *mysi = GetScrollInfoFromHwnd(hwnd, nBar);
if (!mysi)
return GetScrollRange(hwnd, nBar, lpMinPos, lpMaxPos);
*lpMinPos = mysi->nMin;
*lpMaxPos = mysi->nMax;
return TRUE;
}
int WINAPI CoolSB_SetScrollPos(HWND hwnd, int nBar, int nPos, BOOL fRedraw)
{
int oldpos;
SCROLLINFO *mysi = GetScrollInfoFromHwnd(hwnd, nBar);
if (!mysi)
return SetScrollPos(hwnd, nBar, nPos, fRedraw);
//validate and set the scollbar position
oldpos = mysi->nPos;
mysi->nPos = max(nPos, mysi->nMin);
mysi->nPos = min((UINT)mysi->nPos, mysi->nMax - max(mysi->nPage - 1, 0));
if (fRedraw && !CoolSB_IsThumbTracking(hwnd))
RedrawNonClient(hwnd, FALSE);
return oldpos;
}
int WINAPI CoolSB_SetScrollRange(HWND hwnd, int nBar, int nMinPos, int nMaxPos, BOOL fRedraw)
{
SCROLLINFO *mysi = GetScrollInfoFromHwnd(hwnd, nBar);
if (!mysi)
return SetScrollRange(hwnd, nBar, nMinPos, nMaxPos, fRedraw);
if (CoolSB_IsThumbTracking(hwnd))
return mysi->nPos;
//hide the scrollbar if nMin == nMax
//nMax-nMin must not be greater than MAXLONG
mysi->nMin = nMinPos;
mysi->nMax = nMaxPos;
if (fRedraw)
RedrawNonClient(hwnd, FALSE);
return TRUE;
}
BOOL WINAPI CoolSB_GetScrollInfo (HWND hwnd, int fnBar, LPSCROLLINFO lpsi)
{
SCROLLINFO *mysi;
BOOL copied = FALSE;
if(!lpsi)
return FALSE;
if(!(mysi = GetScrollInfoFromHwnd(hwnd, fnBar)))
{
return GetScrollInfo(hwnd, fnBar, lpsi);
}
if(lpsi->fMask & SIF_PAGE)
{
lpsi->nPage = mysi->nPage;
copied = TRUE;
}
if(lpsi->fMask & SIF_POS)
{
lpsi->nPos = mysi->nPos;
copied = TRUE;
}
if(lpsi->fMask & SIF_TRACKPOS)
{
lpsi->nTrackPos = mysi->nTrackPos;
copied = TRUE;
}
if(lpsi->fMask & SIF_RANGE)
{
lpsi->nMin = mysi->nMin;
lpsi->nMax = mysi->nMax;
copied = TRUE;
}
return copied;
}
int WINAPI CoolSB_SetScrollPos(HWND hwnd, int nBar, int nPos, BOOL fRedraw)
{
SCROLLINFO *mysi;
int oldpos;
if(!(mysi = GetScrollInfoFromHwnd(hwnd, nBar)))
{
return SetScrollPos(hwnd, nBar, nPos, fRedraw);
}
//this is what should happen, but real scrollbars don't work like this..
//if(CoolSB_IsThumbTracking(hwnd))
// return mysi->nPos;
//validate and set the scollbar position
oldpos = mysi->nPos;
mysi->nPos = max(nPos, mysi->nMin);
mysi->nPos = min((UINT)mysi->nPos, mysi->nMax - max(mysi->nPage - 1, 0));
if(fRedraw && !CoolSB_IsThumbTracking(hwnd))
RedrawNonClient(hwnd, FALSE);
return oldpos;
}
int WINAPI CoolSB_SetScrollInfo (HWND hwnd, int fnBar, LPSCROLLINFO lpsi, BOOL fRedraw)
{
SCROLLINFO *mysi;
SCROLLBAR *sbar;
BOOL fRecalcFrame = FALSE;
if(!lpsi)
return FALSE;
if(!(mysi = GetScrollInfoFromHwnd(hwnd, fnBar)))
return SetScrollInfo(hwnd, fnBar, lpsi, fRedraw);
//if(CoolSB_IsThumbTracking(hwnd))
// return mysi->nPos;
if(lpsi->fMask & SIF_RANGE)
{
mysi->nMin = lpsi->nMin;
mysi->nMax = lpsi->nMax;
}
//The nPage member must specify a value from 0 to nMax - nMin +1.
if(lpsi->fMask & SIF_PAGE)
{
UINT t = (UINT)(mysi->nMax - mysi->nMin + 1);
mysi->nPage = min(max(0, lpsi->nPage), t);
}
//The nPos member must specify a value between nMin and nMax - max(nPage - 1, 0).
if(lpsi->fMask & SIF_POS)
{
mysi->nPos = max(lpsi->nPos, mysi->nMin);
mysi->nPos = min((UINT)mysi->nPos, mysi->nMax - max(mysi->nPage - 1, 0));
}
sbar = GetScrollBarFromHwnd(hwnd, fnBar);
if((lpsi->fMask & SIF_DISABLENOSCROLL) || (sbar->fScrollFlags & CSBS_THUMBALWAYS))
{
if(!sbar->fScrollVisible)
{
CoolSB_ShowScrollBar(hwnd, fnBar, TRUE);
fRecalcFrame = TRUE;
}
}
else
{
if( mysi->nPage > (UINT)mysi->nMax
|| mysi->nPage == (UINT)mysi->nMax && mysi->nMax == 0
|| mysi->nMax <= mysi->nMin)
{
if(sbar->fScrollVisible)
{
CoolSB_ShowScrollBar(hwnd, fnBar, FALSE);
fRecalcFrame = TRUE;
}
}
else
{
if(!sbar->fScrollVisible)
{
CoolSB_ShowScrollBar(hwnd, fnBar, TRUE);
fRecalcFrame = TRUE;
}
}
}
if(fRedraw && !CoolSB_IsThumbTracking(hwnd))
RedrawNonClient(hwnd, fRecalcFrame);
return mysi->nPos;
}
