wm_setcapturemove.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_SetCaptureMove.c
Purpose 	: Implementation of WM_SetCaptureMove
----------------------------------------------------------------------
*/

#include "WM_Intern.h"

#if GUI_WINSUPPORT

/*********************************************************************
*
*   	 Static data
*
**********************************************************************
*/
static GUI_POINT WM__CapturePoint;

/*********************************************************************
*
*   	 Public code
*
**********************************************************************
*/
/*********************************************************************
*
*   	WM_SetCaptureMove
*/
void WM_SetCaptureMove(WM_HWIN hWin, const GUI_PID_STATE *pState, int MinVisibility)
{
	if (!WM_HasCaptured(hWin))
	{
		WM_SetCapture(hWin, 1); 	   /* Set capture with auto release */
		WM__CapturePoint.x = pState->x;
		WM__CapturePoint.y = pState->y;
	}
	else
	{
		/* Moving ... let the window move ! */
		int dx, dy;
		dx = pState->x - WM__CapturePoint.x;
		dy = pState->y - WM__CapturePoint.y;
		/* make sure at least a part of the windows stays inside of its parent */
		if (MinVisibility == 0)
		{
			WM_MoveWindow(hWin, dx, dy);
		}
		else
		{
			GUI_RECT Rect, RectParent;
			/* make sure at least a part of the windows stays inside of its parent */
			WM_GetWindowRectEx(hWin, &Rect);
			WM_GetWindowRectEx(WM_GetParent(hWin), &RectParent);
			GUI_MoveRect(&Rect, dx, dy);
			GUI__ReduceRect(&RectParent, &RectParent, MinVisibility);
			if (GUI_RectsIntersect(&Rect, &RectParent))
			{
				WM_MoveWindow(hWin, dx, dy);
			}
		}
	}
}


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

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