115 lines
2.9 KiB
C
115 lines
2.9 KiB
C
/*
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* Focus functions
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*
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* Copyright 1993 David Metcalfe
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* Copyright 1994 Alexandre Julliard
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*/
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static char Copyright[] = "Copyright David Metcalfe, 1993";
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static char Copyright2[] = "Copyright Alexandre Julliard, 1994";
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#include "win.h"
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extern Colormap COLOR_WinColormap;
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static HWND hWndFocus = 0;
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/*****************************************************************
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* FOCUS_SetXFocus
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*
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* Set the X focus.
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*/
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static void FOCUS_SetXFocus( HWND hwnd )
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{
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WND *wndPtr;
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XWindowAttributes win_attr;
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/* Only mess with the X focus if there's no desktop window */
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if (rootWindow != DefaultRootWindow(display)) return;
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if (!hwnd) /* If setting the focus to 0, uninstall the colormap */
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{
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if (COLOR_WinColormap != DefaultColormapOfScreen(screen))
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XUninstallColormap( display, COLOR_WinColormap );
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return;
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}
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/* Set X focus on the top-level ancestor. */
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/* Find ancestor */
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wndPtr = WIN_FindWndPtr( hWndFocus );
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while (wndPtr && (wndPtr->dwStyle & WS_CHILD))
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wndPtr = WIN_FindWndPtr( wndPtr->hwndParent );
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if (!wndPtr) return;
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/* Make sure window is viewable */
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if (!XGetWindowAttributes( display, wndPtr->window, &win_attr ) ||
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(win_attr.map_state != IsViewable)) return;
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/* Set X focus and install colormap */
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XSetInputFocus( display, wndPtr->window, RevertToParent, CurrentTime );
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if (COLOR_WinColormap != DefaultColormapOfScreen(screen))
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XInstallColormap( display, COLOR_WinColormap );
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}
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/*****************************************************************
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* SetFocus (USER.22)
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*/
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HWND SetFocus(HWND hwnd)
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{
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HWND hWndPrevFocus, hwndParent;
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WND *wndPtr;
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if (hwnd == hWndFocus) return hWndFocus; /* Nothing to do! */
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if (hwnd)
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{
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/* Check if we can set the focus to this window */
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hwndParent = hwnd;
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while ((wndPtr = WIN_FindWndPtr( hwndParent )) != NULL)
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{
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if ((wndPtr->dwStyle & WS_MINIMIZE) ||
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(wndPtr->dwStyle & WS_DISABLED)) return 0;
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if (!(wndPtr->dwStyle & WS_CHILD)) break;
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hwndParent = wndPtr->hwndParent;
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}
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/* Now hwndParent is the top-level ancestor. Activate it. */
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if (hwndParent != GetActiveWindow())
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{
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SetWindowPos( hwndParent, HWND_TOP, 0, 0, 0, 0,
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SWP_NOSIZE | SWP_NOMOVE );
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if (!IsWindow( hwnd )) return 0; /* Abort if window destroyed */
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}
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}
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/* Change focus and send messages */
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hWndPrevFocus = hWndFocus;
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hWndFocus = hwnd;
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if (hWndPrevFocus) SendMessage( hWndPrevFocus, WM_KILLFOCUS, hwnd, 0 );
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if (hwnd == hWndFocus) /* Maybe already changed during WM_KILLFOCUS */
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{
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if (hwnd) SendMessage( hWndFocus, WM_SETFOCUS, hWndPrevFocus, 0 );
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FOCUS_SetXFocus( hwnd );
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}
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return hWndPrevFocus;
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}
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/*****************************************************************
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* GetFocus (USER.23)
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*/
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HWND GetFocus(void)
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{
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return hWndFocus;
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}
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