/*********************************************************************
*
* _AddKey
*
* Returns: 1 if Key has been consumed
* 0 else
*/
static int _AddKey(LISTVIEW_Handle hObj, LISTVIEW_Obj* pObj, int Key) {
switch (Key) {
case GUI_KEY_DOWN:
LISTVIEW__MoveSel(hObj, pObj, 1);
return 1; /* Key has been consumed */
case GUI_KEY_PGDOWN:
_OnPage(hObj, pObj, 1);
return 1; /* Key has been consumed */
case GUI_KEY_UP:
LISTVIEW__MoveSel(hObj, pObj, -1);
return 1; /* Key has been consumed */
case GUI_KEY_PGUP:
_OnPage(hObj, pObj, -1);
return 1; /* Key has been consumed */
case GUI_KEY_HOME:
LISTVIEW__SetSel(hObj, pObj, 0);
return 1; /* Key has been consumed */
case GUI_KEY_END:
LISTVIEW__SetSel(hObj, pObj, LISTVIEW__GetNumRows(pObj) - 1);
return 1; /* Key has been consumed */
case GUI_KEY_RIGHT:
if (WM_SetScrollValue(&pObj->ScrollStateH, pObj->ScrollStateH.v + pObj->Props.ScrollStepH)) {
LISTVIEW__UpdateScrollPos(hObj, pObj);
LISTVIEW__InvalidateInsideArea(hObj, pObj);
}
return 1; /* Key has been consumed */
case GUI_KEY_LEFT:
if (WM_SetScrollValue(&pObj->ScrollStateH, pObj->ScrollStateH.v - pObj->Props.ScrollStepH)) {
LISTVIEW__UpdateScrollPos(hObj, pObj);
LISTVIEW__InvalidateInsideArea(hObj, pObj);
}
return 1; /* Key has been consumed */
}
return 0; /* Key has NOT been consumed */
}
/*********************************************************************
*
* 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__SetSel
*/
void LISTVIEW__SetSel(LISTVIEW_Handle hObj, LISTVIEW_Obj* pObj, int NewSel) {
int NumRows;
NumRows = LISTVIEW__GetNumRows(pObj);
if (NewSel >= NumRows) {
NewSel = NumRows - 1;
}
if (NewSel < 0) {
NewSel = -1;
}
if (NewSel != pObj->Sel) {
char Disabled;
LISTVIEW_ROW * pRow;
pRow = (LISTVIEW_ROW *)GUI_ARRAY_GetpItem(&pObj->RowArray, NewSel);
if (pRow) {
Disabled = pRow->Disabled;
} else {
Disabled = 0;
}
if (Disabled == 0) {
int OldSel;
OldSel = pObj->Sel;
pObj->Sel = NewSel;
if (LISTVIEW__UpdateScrollPos(hObj, pObj)) {
LISTVIEW__InvalidateInsideArea(hObj, pObj);
} else {
LISTVIEW__InvalidateRow(hObj, pObj, OldSel);
LISTVIEW__InvalidateRow(hObj, pObj, NewSel);
}
WM_NotifyParent(hObj, WM_NOTIFICATION_SEL_CHANGED);
}
}
}
/*********************************************************************
*
* 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);
}
