WM_SetTrans.c
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上传日期:2017-08-10
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- /*
- *********************************************************************************************************
- * 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_SetTrans.C
- Purpose : Windows manager, optional routines
- ----------------------------------------------------------------------
- */
- #include "WM_Intern.H"
- #if GUI_WINSUPPORT /* If 0, WM will not generate any code */
- #include "GUIDebug.h"
- #define WM_DEBUG_LEVEL 1
- /*
- ********************************************************************
- * *
- * Manage transparency attributes *
- * *
- ********************************************************************
- */
- void WM_SetHasTrans(WM_HWIN hWin) {
- WM_Obj *pWin = WM_HANDLE2PTR(hWin);
- /* First check if this is necessary at all */
- if (pWin->Status&WM_SF_HASTRANS)
- return;
- /* Set Transparency flag */
- pWin->Status |= WM_SF_HASTRANS;
- /* Mark content as invalid */
- WM_InvalidateWindow(hWin);
- }
- void WM_ClrHasTrans(WM_HWIN hWin) {
- WM_Obj *pWin = WM_HANDLE2PTR(hWin);
- /* First check if this is necessary at all */
- if ((pWin->Status&WM_SF_HASTRANS) ==0)
- return;
- pWin->Status &= ~WM_SF_HASTRANS;
- /* Mark content as invalid */
- WM_InvalidateWindow(hWin);
- }
- int WM_GetHasTrans(WM_HWIN hWin) {
- return WM_HANDLE2PTR(hWin)->Status &WM_SF_HASTRANS;
- }
- #else
- void WM_SetTrans(void) {} /* avoid empty object files */
- #endif /* WM_MAX_WINDOW */