listview_deleterow.c

MCB2300_ucgui_LCD320240.rar LPC2368的uc/gui的移植

/*
*********************************************************************************************************
*   											 uC/GUI
*   					 Universal graphic software for embedded applications
*
*   					(c) Copyright 2002, Micrium Inc., Weston, FL
*   					(c) Copyright 2002, SEGGER Microcontroller Systeme GmbH
*
*   		   礐/GUI is protected by international copyright laws. Knowledge of the
*   		   source code may not be used to write a similar product. This file may
*   		   only be used in accordance with a license and should not be redistributed
*   		   in any way. We appreciate your understanding and fairness.
*
----------------------------------------------------------------------
File		: LISTVIEW_DeleteRow.c
Purpose 	: Implementation of LISTVIEW_DeleteRow
---------------------------END-OF-HEADER------------------------------
*/

#include "LISTVIEW_Private.h"

#if GUI_WINSUPPORT

/*********************************************************************
*
*   	Static routines
*
**********************************************************************
*/
/*********************************************************************
*
*   	_InvalidateRowAndBelow
*/
static void _InvalidateRowAndBelow(LISTVIEW_Handle hObj, LISTVIEW_Obj *pObj, int Sel)
{
	if (Sel >= 0)
	{
		GUI_RECT Rect;
		int HeaderHeight, RowDistY;
		HeaderHeight = HEADER_GetHeight(pObj->hHeader);
		RowDistY = LISTVIEW__GetRowDistY(pObj);
		WM_GetInsideRectExScrollbar(hObj, &Rect);
		Rect.y0 += HeaderHeight + (Sel - pObj->ScrollStateV.v) * RowDistY;
		WM_InvalidateRect(hObj, &Rect);
	}
}

/*********************************************************************
*
*   	Public routines
*
**********************************************************************
*/
/*********************************************************************
*
*   	LISTVIEW_DeleteRow
*/
void LISTVIEW_DeleteRow(LISTVIEW_Handle hObj, unsigned Index)
{
	if (hObj)
	{
		LISTVIEW_Obj* pObj;
		unsigned NumRows;
		WM_LOCK();
		pObj = LISTVIEW_H2P(hObj);
		NumRows = GUI_ARRAY_GetNumItems(&pObj->RowArray);
		if (Index < NumRows)
		{
			unsigned NumColumns, i;
			GUI_ARRAY* pRow;
			pRow = (GUI_ARRAY *) GUI_ARRAY_GetpItem(&pObj->RowArray, Index);
			/* Delete attached info items */
			NumColumns = GUI_ARRAY_GetNumItems(pRow);
			for (i = 0; i < NumColumns; i++)
			{
				LISTVIEW_ITEM * pItem;
				pItem = (LISTVIEW_ITEM *) GUI_ARRAY_GetpItem(pRow, i);
				if (pItem->hItemInfo)
				{
					GUI_ALLOC_Free(pItem->hItemInfo);
				}
			}
			/* Delete row */
			GUI_ARRAY_Delete(pRow);
			GUI_ARRAY_DeleteItem(&pObj->RowArray, Index);
			/* Adjust properties */
			if (pObj->Sel == (signed int) Index)
			{
				pObj->Sel = -1;
			}
			if (pObj->Sel > (signed int) Index)
			{
				pObj->Sel--;
			}
			if (LISTVIEW__UpdateScrollParas(hObj, pObj))
			{
				LISTVIEW__InvalidateInsideArea(hObj, pObj);
			}
			else
			{
				_InvalidateRowAndBelow(hObj, pObj, Index);
			}
		}
		WM_UNLOCK();
	}
}


#else   						 /* Avoid problems with empty object modules */
void LISTVIEW_DeleteRow_C(void);
void LISTVIEW_DeleteRow_C(void)
{
}
#endif