/*********************************************************************
*
* _SCROLLBAR_Callback
*/
static void _SCROLLBAR_Callback (WM_MESSAGE *pMsg) {
SCROLLBAR_Handle hObj;
SCROLLBAR_Obj* pObj;
hObj = pMsg->hWin;
pObj = SCROLLBAR_H2P(hObj);
/* Let widget handle the standard messages */
if (WIDGET_HandleActive(hObj, pMsg) == 0) {
return;
}
switch (pMsg->MsgId) {
case WM_DELETE:
SCROLLBAR__InvalidatePartner(hObj);
break;
case WM_PAINT:
GUI_DEBUG_LOG("SCROLLBAR: _Callback(WM_PAINT)\n");
_Paint(pObj);
return;
case WM_TOUCH:
_OnTouch(hObj, pObj, pMsg);
break;
case WM_KEY:
_OnKey(hObj, pMsg);
break;
case WM_SET_SCROLL_STATE:
_OnSetScrollState(hObj, pObj, (const WM_SCROLL_STATE*)pMsg->Data.p);
break;
case WM_GET_SCROLL_STATE:
((WM_SCROLL_STATE*)pMsg->Data.p)->NumItems = pObj->NumItems;
((WM_SCROLL_STATE*)pMsg->Data.p)->PageSize = pObj->PageSize;
((WM_SCROLL_STATE*)pMsg->Data.p)->v = pObj->v;
break;
}
WM_DefaultProc(pMsg);
}
/*********************************************************************
*
* SCROLLBAR_AddValue
*/
void SCROLLBAR_AddValue(SCROLLBAR_Handle hObj, int Add) {
SCROLLBAR_Obj* pObj;
if (hObj) {
WM_LOCK();
pObj = SCROLLBAR_H2P(hObj);
SCROLLBAR_SetValue(hObj, pObj->v + Add);
WM_UNLOCK();
}
}
/*********************************************************************
*
* SCROLLBAR_CreateEx
*/
SCROLLBAR_Handle SCROLLBAR_CreateEx(int x0, int y0, int xsize, int ysize, WM_HWIN hParent,
int WinFlags, int ExFlags, int Id)
{
SCROLLBAR_Handle hObj;
WM_LOCK();
/* Set defaults if necessary */
if ((xsize == 0) && (ysize == 0)) {
GUI_RECT Rect;
WM_GetInsideRectEx(hParent, &Rect);
if (ExFlags & SCROLLBAR_CF_VERTICAL) {
xsize = SCROLLBAR__DefaultWidth;
x0 = Rect.x1 + 1 - xsize;
y0 = Rect.y0;
ysize = Rect.y1 - Rect.y0 + 1;
} else {
ysize = SCROLLBAR__DefaultWidth;
y0 = Rect.y1 + 1 - ysize;
x0 = Rect.x0;
xsize = Rect.x1 - Rect.x0 + 1;
}
}
/* Create the window */
hObj = WM_CreateWindowAsChild(x0, y0, xsize, ysize, hParent, WinFlags, _SCROLLBAR_Callback,
sizeof(SCROLLBAR_Obj) - sizeof(WM_Obj));
if (hObj) {
SCROLLBAR_Obj* pObj = SCROLLBAR_H2P(hObj);
U16 InitState;
/* Handle SpecialFlags */
InitState = 0;
if (ExFlags & SCROLLBAR_CF_VERTICAL) {
InitState |= WIDGET_CF_VERTICAL;
}
if (ExFlags & SCROLLBAR_CF_FOCUSSABLE) {
InitState |= WIDGET_STATE_FOCUSSABLE;
}
if ((Id != GUI_ID_HSCROLL) && (Id != GUI_ID_VSCROLL)) {
InitState |= WIDGET_STATE_FOCUSSABLE;
}
/* init widget specific variables */
WIDGET__Init(&pObj->Widget, Id, InitState);
/* init member variables */
SCROLLBAR_INIT_ID(pObj);
pObj->aBkColor[0] = SCROLLBAR__aDefaultBkColor[0];
pObj->aBkColor[1] = SCROLLBAR__aDefaultBkColor[1];
pObj->aColor[0] = SCROLLBAR__aDefaultColor[0];
pObj->aColor[1] = SCROLLBAR__aDefaultColor[1];
pObj->NumItems = 100;
pObj->PageSize = 10;
pObj->v = 0;
SCROLLBAR__InvalidatePartner(hObj);
} else {
GUI_DEBUG_ERROROUT_IF(hObj==0, "SCROLLBAR_Create failed")
}
WM_UNLOCK();
return hObj;
}
/*********************************************************************
*
* SCROLLBAR_GetValue
*/
int SCROLLBAR_GetValue(SCROLLBAR_Handle hObj) {
int r = 0;
SCROLLBAR_Obj* pObj;
if (hObj) {
WM_LOCK();
pObj = SCROLLBAR_H2P(hObj);
r = pObj->v;
WM_UNLOCK();
}
return r;
}
/*********************************************************************
*
* SCROLLBAR_SetPageSize
*/
void SCROLLBAR_SetPageSize(SCROLLBAR_Handle hObj, int PageSize) {
SCROLLBAR_Obj* pObj;
if (hObj) {
WM_LOCK();
pObj = SCROLLBAR_H2P(hObj);
if (pObj->PageSize != PageSize) {
pObj->PageSize = PageSize;
WM_InvalidateWindow(hObj);
}
WM_UNLOCK();
}
}
/*********************************************************************
*
* SCROLLBAR_SetNumItems
*/
void SCROLLBAR_SetNumItems(SCROLLBAR_Handle hObj, int NumItems) {
SCROLLBAR_Obj* pObj;
if (hObj) {
WM_LOCK();
pObj = SCROLLBAR_H2P(hObj);
if (pObj->NumItems != NumItems) {
pObj->NumItems = NumItems;
WM_InvalidateWindow(hObj);
}
WM_UNLOCK();
}
}
/*********************************************************************
*
* SCROLLBAR_SetValue
*/
void SCROLLBAR_SetValue(SCROLLBAR_Handle hObj, int v) {
SCROLLBAR_Obj* pObj;
int Max;
if (hObj) {
WM_LOCK();
pObj = SCROLLBAR_H2P(hObj);
Max = pObj->NumItems - pObj->PageSize;
if (Max < 0)
Max =0;
/* Put in min/max range */
if (v < 0) {
v = 0;
}
if (v > Max) {
v = Max;
}
if (pObj->v != v) {
pObj->v = v;
WM_InvalidateWindow(hObj);
WM_NotifyParent(hObj, WM_NOTIFICATION_VALUE_CHANGED);
}
WM_UNLOCK();
}
}
