123 lines
2.9 KiB
C
123 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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* 1994 Alexandre Julliard
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* 1995 Alex Korobka
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*
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*/
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#include "win.h"
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#include "winpos.h"
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#include "hook.h"
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#include "color.h"
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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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XWindowAttributes win_attr;
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Window win;
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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 and install colormap */
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if (!(win = WIN_GetXWindow( hwnd ))) return;
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if (!XGetWindowAttributes( display, win, &win_attr ) ||
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(win_attr.map_state != IsViewable))
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return; /* If window is not viewable, don't change anything */
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XSetInputFocus( display, win, 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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* FOCUS_SwitchFocus
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*/
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void FOCUS_SwitchFocus(HWND hFocusFrom, HWND hFocusTo)
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{
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hwndFocus = hFocusTo;
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if (hFocusFrom) SendMessage( hFocusFrom, WM_KILLFOCUS, hFocusTo, 0L);
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if( !hFocusTo || hFocusTo != hwndFocus )
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return;
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SendMessage( hFocusTo, WM_SETFOCUS, hFocusFrom, 0L);
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FOCUS_SetXFocus( hFocusTo );
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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, hwndTop;
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WND *wndPtr = WIN_FindWndPtr( hwndTop = hwnd );
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if (wndPtr)
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{
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/* Check if we can set the focus to this window */
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while ( (wndPtr->dwStyle & (WS_CHILD | WS_POPUP)) == WS_CHILD )
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{
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if ( wndPtr->dwStyle & ( WS_MINIMIZE | WS_DISABLED) )
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return 0;
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hwndTop = wndPtr->hwndParent;
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wndPtr = WIN_FindWndPtr( hwndTop );
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if ( !wndPtr )
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return 0;
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}
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if( hwnd == hwndFocus ) return hwnd;
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/* call hooks */
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if( HOOK_CallHooks( WH_CBT, HCBT_SETFOCUS, hwnd, hwndFocus) )
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return 0;
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/* activate hwndTop if needed. */
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if (hwndTop != GetActiveWindow())
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{
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if (!WINPOS_SetActiveWindow(hwndTop, 0, 0)) return 0;
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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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else if( HOOK_CallHooks( WH_CBT, HCBT_SETFOCUS, 0, hwndFocus ) )
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return 0;
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/* Change focus and send messages */
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hWndPrevFocus = hwndFocus;
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FOCUS_SwitchFocus( hwndFocus , hwnd );
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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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