gui_onkey.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_OnKey.c
Purpose 	: Implementation of GUI_StoreKeyMsg
---------------------------END-OF-HEADER------------------------------
*/

#include "GUI_Protected.h"

#if GUI_WINSUPPORT
#include "WM.h"
#endif

/*********************************************************************
*
*   	Static data
*
**********************************************************************
*/

#if GUI_WINSUPPORT

static int _KeyMsgCnt;
static struct
{
	int	Key;
	int	PressedCnt;
} _KeyMsg;

#endif

static int _Key;

/*********************************************************************
*
*   	Public data
*
**********************************************************************
*/

GUI_KEY_MSG_HOOK* GUI_pfKeyMsgHook;

/*********************************************************************
*
*   	Public code
*
**********************************************************************
*/
/*********************************************************************
*
*   	GUI_GetKey
*/
int GUI_GetKey(void)
{
	int r = _Key;
	_Key = 0;
	return r;
}

/*********************************************************************
*
*   	GUI_StoreKey
*/
void GUI_StoreKey(int Key)
{
	if (!_Key)
	{
		_Key = Key;
	}
	GUI_X_SIGNAL_EVENT();
}

/*********************************************************************
*
*   	GUI_ClearKeyBuffer
*/
void GUI_ClearKeyBuffer(void)
{
	while (GUI_GetKey());
}

/*********************************************************************
*
*   	GUI_StoreKeyMsg
*/
void GUI_StoreKeyMsg(int Key, int PressedCnt)
{
#if GUI_WINSUPPORT    /* If 0, WM will not generate any code */
	_KeyMsg.Key = Key;
	_KeyMsg.PressedCnt = PressedCnt;
	_KeyMsgCnt = 1;
	GUI_X_SIGNAL_EVENT();
#else
	GUI_USE_PARA(PressedCnt);
	GUI_StoreKey(Key);
#endif
}

/*********************************************************************
*
*   	GUI_PollKeyMsg
*/
#if GUI_WINSUPPORT    /* If 0, WM will not generate any code */
int GUI_PollKeyMsg(void)
{
	int r = 0;
	GUI_LOCK();
	if (_KeyMsgCnt)
	{
		int Key;
		_KeyMsgCnt--;
		Key = _KeyMsg.Key;
		WM_OnKey(Key, _KeyMsg.PressedCnt);
		if (_KeyMsg.PressedCnt == 1)
		{
			GUI_StoreKey(Key);
		}
		r = 1;  			/* We have done something */
	}
	GUI_UNLOCK();
	return r;
}
#endif

/*********************************************************************
*
*   	GUI_SendKeyMsg
*
* Purpose:
*   Send the key to a window using the window manager (if available).
*   If no window is ready to take the input, we call the store routine
*   and wait for somebody to poll the buffer.
*/
void GUI_SendKeyMsg(int Key, int PressedCnt)
{
#if GUI_WINSUPPORT    /* If 0, WM will not generate any code */
	if (!WM_OnKey(Key, PressedCnt))
	{
		GUI_StoreKeyMsg(Key, PressedCnt);
	}
#else
	GUI_StoreKeyMsg(Key, PressedCnt);
#endif
}

/*************************** End of file ****************************/