74 lines
2.6 KiB
C
74 lines
2.6 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_SetCaptureMove.c
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Purpose : Implementation of WM_SetCaptureMove
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----------------------------------------------------------------------
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*/
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#include "WM_Intern.h"
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#if GUI_WINSUPPORT
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/*********************************************************************
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*
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* Static data
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*
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**********************************************************************
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*/
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static GUI_POINT WM__CapturePoint;
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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_SetCaptureMove
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*/
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void WM_SetCaptureMove(WM_HWIN hWin, const GUI_PID_STATE* pState, int MinVisibility) {
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if (!WM_HasCaptured(hWin)) {
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WM_SetCapture(hWin, 1); /* Set capture with auto release */
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WM__CapturePoint.x = pState->x;
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WM__CapturePoint.y = pState->y;
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} else { /* Moving ... let the window move ! */
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int dx, dy;
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dx = pState->x - WM__CapturePoint.x;
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dy = pState->y - WM__CapturePoint.y;
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/* make sure at least a part of the windows stays inside of its parent */
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if (MinVisibility == 0) {
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WM_MoveWindow(hWin, dx, dy);
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} else {
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GUI_RECT Rect, RectParent;
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/* make sure at least a part of the windows stays inside of its parent */
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WM_GetWindowRectEx(hWin, &Rect);
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WM_GetWindowRectEx(WM_GetParent(hWin), &RectParent);
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GUI_MoveRect(&Rect, dx, dy);
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GUI__ReduceRect(&RectParent, &RectParent, MinVisibility);
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if (GUI_RectsIntersect(&Rect, &RectParent)) {
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WM_MoveWindow(hWin, dx, dy);
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}
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}
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}
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}
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#else
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void WM_SetCaptureMove_c(void) {} /* avoid empty object files */
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#endif /* GUI_WINSUPPORT */
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/*************************** End of file ****************************/
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