wm__updatechildpositions.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		: WM__UpdateChildPositions.C
Purpose 	: Windows manager, add. module
----------------------------------------------------------------------
*/

#include <stddef.h>
#include "WM_Intern.h"

#if GUI_WINSUPPORT    /* If 0, WM will not generate any code */
#include "GUIDebug.h"
#define WM_DEBUG_LEVEL 1

/*********************************************************************
*
*   	Public code
*
**********************************************************************
*/
/*********************************************************************
*
*   	WM__UpdateChildPositions
*
* Purpose:
*   Move and/or resize all children of a resized window.
*   What exactly happens to the window depends on how the edges are
*   anchored.
*/
void WM__UpdateChildPositions(WM_Obj *pObj, int dx0, int dy0, int dx1, int dy1)
{
	WM_HWIN hChild;
	WM_Obj* pChild;
	int dx, dy, dw, dh;
	for (hChild = pObj->hFirstChild; hChild; hChild = pChild->hNext)
	{
		int Status;
		GUI_RECT rOld, rNew;
		pChild = WM_H2P(hChild);
		/* Compute size of new rectangle */
		rOld = pChild->Rect;
		rNew = rOld;
		Status = pChild->Status & (WM_SF_ANCHOR_RIGHT | WM_SF_ANCHOR_LEFT);
		switch (Status)
		{
			case WM_SF_ANCHOR_RIGHT:
				/* Right ANCHOR : Move window with right side */
				rNew.x0 += dx1;
				rNew.x1 += dx1;
				break;
			case WM_SF_ANCHOR_RIGHT | WM_SF_ANCHOR_LEFT:
				/* Left & Right ANCHOR: Resize window */
				rNew.x0 += dx0;
				rNew.x1 += dx1;
				break;
			default:
				/* Left ANCHOR: Move window with left side of parent */
				rNew.x0 += dx0;
				rNew.x1 += dx0;
		}
		Status = pChild->Status & (WM_SF_ANCHOR_TOP | WM_SF_ANCHOR_BOTTOM);
		switch (Status)
		{
			case WM_SF_ANCHOR_BOTTOM:
				/* Bottom ANCHOR */
				rNew.y0 += dy1;
				rNew.y1 += dy1;
				break;
			case WM_SF_ANCHOR_BOTTOM | WM_SF_ANCHOR_TOP:
				/* resize window */
				rNew.y0 += dy0;
				rNew.y1 += dy1;
				break;
			default:
				/* Top ANCHOR */
				rNew.y0 += dy0;
				rNew.y1 += dy0;
		}
		/* Set new window position using Move and Resize as required */
		dx = rNew.x0 - rOld.x0;
		dy = rNew.y0 - rOld.y0;
		if (dx || dy)
		{
			WM_MoveWindow(hChild, dx, dy);
		}
		dw = (rNew.x1 - rNew.x0) - (rOld.x1 - rOld.x0);
		dh = (rNew.y1 - rNew.y0) - (rOld.y1 - rOld.y0);
		if (dw || dh)
		{
			WM_ResizeWindow(hChild, dw, dh);
		}
	}
}

#else
void WM_UpdateChildPositions_C(void)
{
} /* avoid empty object files */
#endif   /* GUI_WINSUPPORT */

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