gui_array_insertitem.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		: GUI_ARRAY_InsertItem.c
Purpose 	: Array handling routines
---------------------------END-OF-HEADER------------------------------
*/

#include "GUI_ARRAY.h"
#include <string.h>

#if GUI_WINSUPPORT

/*********************************************************************
*
*   	public code
*
**********************************************************************
*/
/*********************************************************************
*
*   	GUI_ARRAY_InsertBlankItem
*
* Purpose:
*   Inserts a blank element in a GUI_ARRAY.
*
* Parameters:
*   Index   Index of the element to insert before
*   		0 means: Insert before first element
*   		1 means: Insert before second element
*
* Return value:
*   1 if successful
*   0 if failed
*
* Notes:
*   (1) Index changes
*   	The index of all items after the one inserted will change
*   	(Increment by 1)
*/
char GUI_ARRAY_InsertBlankItem(GUI_ARRAY *pThis, unsigned int Index)
{
	GUI_ARRAY_CHECK(pThis);    /* Sanity checks at higher debug levels only */

	if (Index >= (unsigned) pThis->NumItems)
	{
		GUI_DEBUG_ERROROUT("GUI_ARRAY_InsertBlankItem: Illegal index");
	}
	else
	{
		WM_HMEM hNewBuffer;
		hNewBuffer = GUI_ALLOC_AllocZero(sizeof(WM_HMEM) * (pThis->NumItems + 1));
		if (hNewBuffer == 0)
		{
			GUI_DEBUG_ERROROUT("GUI_ARRAY_InsertBlankItem: Failed to alloc buffer");
		}
		else
		{
			WM_HMEM *pOldBuffer;
			WM_HMEM *pNewBuffer;
			pNewBuffer = (WM_HMEM *) GUI_ALLOC_h2p(hNewBuffer);
			pOldBuffer = (WM_HMEM *) GUI_ALLOC_h2p(pThis->haHandle);
			memcpy(pNewBuffer, pOldBuffer, Index * sizeof(WM_HMEM));
			memcpy(pNewBuffer + (Index + 1), pOldBuffer + Index, (pThis->NumItems - Index) * sizeof(WM_HMEM));
			GUI_ALLOC_Free(pThis->haHandle);
			pThis->haHandle = hNewBuffer;
			pThis->NumItems++;
			return 1;   			/* Successfull */
		}
	}
	return 0;   				/* Failed */
}

/*********************************************************************
*
*   	GUI_ARRAY_InsertItem
*
* Purpose:
*   Inserts an element in a GUI_ARRAY.
*
*
* Parameters:
*   Index   Index of the element to insert before
*   		0 means: Insert before first element
*   		1 means: Insert before second element
*
* Return value:
*   Handle of allocated memory block if successful
*   0 if failed
*
* Notes:
*   (1) Index changes
*   	The index of all items after the one inserted will change
*   	(Increment by 1)
*/
WM_HMEM GUI_ARRAY_InsertItem(GUI_ARRAY *pThis, unsigned int Index, int Len)
{
	WM_HMEM hNewBuffer = 0;
	if (GUI_ARRAY_InsertBlankItem(pThis, Index))
	{
		hNewBuffer = GUI_ARRAY_SetItem(pThis, Index, 0, Len);
	}
	return hNewBuffer;
}

#else  /* avoid empty object files */

void GUI_ARRAY_InsertItem_C(void);
void GUI_ARRAY_InsertItem_C(void)
{
}

#endif