112 lines
3.4 KiB
C
112 lines
3.4 KiB
C
/*
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*********************************************************************************************************
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* uC/GUI
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* Universal graphic software for embedded applications
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*
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* (c) Copyright 2002, Micrium Inc., Weston, FL
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* (c) Copyright 2002, SEGGER Microcontroller Systeme GmbH
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*
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* µC/GUI is protected by international copyright laws. Knowledge of the
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* source code may not be used to write a similar product. This file may
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* only be used in accordance with a license and should not be redistributed
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* in any way. We appreciate your understanding and fairness.
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*
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----------------------------------------------------------------------
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File : WM_Screen2hWin.c
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Purpose : Windows manager, add. module
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----------------------------------------------------------------------
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*/
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#include "WM_Intern.h"
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#if GUI_WINSUPPORT /* If 0, WM will not generate any code */
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/*********************************************************************
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*
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* Static code
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*
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**********************************************************************
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*/
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/*********************************************************************
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*
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* _Screen2hWin
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This routine is recursive.
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It checks if the given coordinates are in the window or a decendant.
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Returns:
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0: If coordinates are neither in the given window nor a decendent
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!=0 Handle of the topmost visible decendent in which the given
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coordinate falls.
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*/
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static WM_HWIN _Screen2hWin(WM_HWIN hWin, WM_HWIN hStop, int x, int y) {
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WM_Obj* pWin = WM_HANDLE2PTR(hWin);
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WM_HWIN hChild;
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WM_HWIN hHit;
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/* First check if the coordinates are in the given window. If not, return 0 */
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if (WM__IsInWindow(pWin, x, y) == 0) {
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return 0;
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}
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/* If the coordinates are in a child, search deeper ... */
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for (hChild = pWin->hFirstChild; hChild && (hChild != hStop); ) {
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WM_Obj* pChild = WM_HANDLE2PTR(hChild);
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if ((hHit = _Screen2hWin(hChild, hStop, x, y)) != 0) {
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hWin = hHit; /* Found a window */
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}
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hChild = pChild->hNext;
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}
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return hWin; /* No Child affected ... The parent is the right one */
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}
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/*********************************************************************
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*
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* Public code
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*
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**********************************************************************
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*/
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/*********************************************************************
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*
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* WM__IsInWindow
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*/
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int WM__IsInWindow(WM_Obj * pWin, int x, int y) {
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if ( (pWin->Status & WM_SF_ISVIS)
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&& (x >= pWin->Rect.x0)
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&& (x <= pWin->Rect.x1)
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&& (y >= pWin->Rect.y0)
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&& (y <= pWin->Rect.y1))
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{
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return 1;
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}
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return 0;
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}
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/*********************************************************************
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*
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* WM_Screen2hWin
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*/
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WM_HWIN WM_Screen2hWin(int x, int y) {
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WM_HWIN r;
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WM_LOCK();
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r = _Screen2hWin(WM__FirstWin, 0, x, y);
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WM_UNLOCK();
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return r;
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}
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/*********************************************************************
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*
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* WM_Screen2hWinEx
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*/
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WM_HWIN WM_Screen2hWinEx(WM_HWIN hStop, int x, int y) {
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WM_HWIN r;
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WM_LOCK();
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r = _Screen2hWin(WM__FirstWin, hStop, x, y);
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WM_UNLOCK();
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return r;
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}
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#else /* Avoid empty object files */
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void WM_Screen2Win(void) {}
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#endif /* GUI_WINSUPPORT */
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/*************************** End of file ****************************/
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