/*********************************************************************
*
* LISTVIEW__UpdateScrollParas
*
* Purpose:
* Calculates number of items and page size of both vertical
* and horizontal scrollbar. After this LISTVIEW__UpdateScrollPos will
* be called to ensure scroll positions are in valid ranges.
*/
int LISTVIEW__UpdateScrollParas(LISTVIEW_Handle hObj, LISTVIEW_Obj* pObj) {
int NumRows, IsRequired;
int xSize, xSizeHeader;
unsigned NumVisibleRows;
NumVisibleRows = _GetNumVisibleRows(hObj, pObj);
xSize = _GetXSize(hObj);
xSizeHeader = _GetHeaderWidth(pObj);
if (pObj->Flags & LISTVIEW_SF_AUTOSCROLLBAR_V) {
IsRequired = (NumVisibleRows < GUI_ARRAY_GetNumItems(&pObj->RowArray));
WM_SetScrollbarV(hObj, IsRequired);
}
if (pObj->Flags & LISTVIEW_SF_AUTOSCROLLBAR_H) {
IsRequired = (xSizeHeader > xSize);
WM_SetScrollbarH(hObj, IsRequired);
NumVisibleRows = _GetNumVisibleRows(hObj, pObj);
}
NumRows = LISTVIEW__GetNumRows(pObj);
/* update vertical scrollbar */
pObj->ScrollStateV.PageSize = NumVisibleRows;
pObj->ScrollStateV.NumItems = (NumRows) ? NumRows : 1;
/* update horizontal scrollbar */
pObj->ScrollStateH.PageSize = xSize;
pObj->ScrollStateH.NumItems = xSizeHeader;
return LISTVIEW__UpdateScrollPos(hObj, pObj);
}
/*********************************************************************
*
* LISTVIEW__UpdateScrollParas
*
* Purpose:
* Calculates number of items and page size of both vertical
* and horizontal scrollbar. After this LISTVIEW__UpdateScrollPos will
* be called to ensure scroll positions are in valid ranges.
*/
int LISTVIEW__UpdateScrollParas(LISTVIEW_Handle hObj, LISTVIEW_Obj* pObj) {
int NumRows;
NumRows = GUI_ARRAY_GetNumItems(&pObj->RowArray);
/* update vertical scrollbar */
pObj->ScrollStateV.PageSize = _GetNumVisibleRows(hObj, pObj);
pObj->ScrollStateV.NumItems = (NumRows) ? NumRows : 1;
/* update horizontal scrollbar */
pObj->ScrollStateH.PageSize = _GetXSize(hObj);
pObj->ScrollStateH.NumItems = _GetHeaderWidth(pObj, pObj->hHeader);
return LISTVIEW__UpdateScrollPos(hObj, pObj);
}
