wm_screen2win.c

来自「LPC2368驱动淘宝上27元钱的TFT的代码」· C语言 代码 · 共 117 行

/*
*********************************************************************************************************
*   											 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		: WM_Screen2hWin.c
Purpose 	: Windows manager, add. module
----------------------------------------------------------------------
*/

#include "WM_Intern.h"

#if GUI_WINSUPPORT    /* If 0, WM will not generate any code */

/*********************************************************************
*
*   	Static code
*
**********************************************************************
*/
/*********************************************************************
*
*   	_Screen2hWin

  This routine is recursive.
  It checks if the given coordinates are in the window or a decendant.
  Returns:
  0:   If coordinates are neither in the given window nor a decendent
  !=0  Handle of the topmost visible decendent in which the given
	   coordinate falls.

*/
static WM_HWIN _Screen2hWin(WM_HWIN hWin, WM_HWIN hStop, int x, int y)
{
	WM_Obj* pWin = WM_HANDLE2PTR(hWin);
	WM_HWIN hChild;
	WM_HWIN hHit;
	/* First check if the  coordinates are in the given window. If not, return 0 */
	if (WM__IsInWindow(pWin, x, y) == 0)
	{
		return 0;
	}
	/* If the coordinates are in a child, search deeper ... */
	for (hChild = pWin->hFirstChild; hChild && (hChild != hStop);)
	{
		WM_Obj* pChild = WM_HANDLE2PTR(hChild);
		if ((hHit = _Screen2hWin(hChild, hStop, x, y)) != 0)
		{
			hWin = hHit;		/* Found a window */
		}
		hChild = pChild->hNext;
	}
	return hWin;			/* No Child affected ... The parent is the right one */
}

/*********************************************************************
*
*   	Public code
*
**********************************************************************
*/
/*********************************************************************
*
*   	WM__IsInWindow
*/
int WM__IsInWindow(WM_Obj *pWin, int x, int y)
{
	if ((pWin->Status & WM_SF_ISVIS) && (x >= pWin->Rect.x0) && (x <= pWin->Rect.x1) && (y >= pWin->Rect.y0) && (y <= pWin->Rect.y1))
	{
		return 1;
	}
	return 0;
}

/*********************************************************************
*
*   	WM_Screen2hWin
*/
WM_HWIN WM_Screen2hWin(int x, int y)
{
	WM_HWIN r;
	WM_LOCK();
	r = _Screen2hWin(WM__FirstWin, 0, x, y);
	WM_UNLOCK();
	return r;
}

/*********************************************************************
*
*   	WM_Screen2hWinEx
*/
WM_HWIN WM_Screen2hWinEx(WM_HWIN hStop, int x, int y)
{
	WM_HWIN r;
	WM_LOCK();
	r = _Screen2hWin(WM__FirstWin, hStop, x, y);
	WM_UNLOCK();
	return r;
}

#else   									/* Avoid empty object files */
void WM_Screen2Win(void)
{
}
#endif   /* GUI_WINSUPPORT */

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