Sweden-Number/windows/focus.c

144 lines
3.5 KiB
C

/*
* Focus functions
*
* Copyright 1993 David Metcalfe
* 1994 Alexandre Julliard
* 1995 Alex Korobka
*
*/
#define NO_TRANSITION_TYPES /* This file is Win32-clean */
#include "win.h"
#include "winpos.h"
#include "hook.h"
#include "color.h"
#include "message.h"
#include "options.h"
static HWND32 hwndFocus = 0;
/*****************************************************************
* FOCUS_SetXFocus
*
* Set the X focus.
* Explicit colormap management seems to work only with OLVWM.
*/
void FOCUS_SetXFocus( HWND32 hwnd )
{
XWindowAttributes win_attr;
Window win;
/* Only mess with the X focus if there's */
/* no desktop window and no window manager. */
if ((rootWindow != DefaultRootWindow(display)) || Options.managed) return;
if (!hwnd) /* If setting the focus to 0, uninstall the colormap */
{
if (COLOR_GetSystemPaletteFlags() & COLOR_PRIVATE)
XUninstallColormap( display, COLOR_GetColormap() );
return;
}
/* Set X focus and install colormap */
if (!(win = WIN_GetXWindow( hwnd ))) return;
if (!XGetWindowAttributes( display, win, &win_attr ) ||
(win_attr.map_state != IsViewable))
return; /* If window is not viewable, don't change anything */
XSetInputFocus( display, win, RevertToParent, CurrentTime );
if (COLOR_GetSystemPaletteFlags() & COLOR_PRIVATE)
XInstallColormap( display, COLOR_GetColormap() );
EVENT_Synchronize();
}
/*****************************************************************
* FOCUS_SwitchFocus
*/
void FOCUS_SwitchFocus( HWND32 hFocusFrom, HWND32 hFocusTo )
{
hwndFocus = hFocusTo;
if (hFocusFrom) SendMessage32A( hFocusFrom, WM_KILLFOCUS, hFocusTo, 0 );
if( !hFocusTo || hFocusTo != hwndFocus )
return;
SendMessage32A( hFocusTo, WM_SETFOCUS, hFocusFrom, 0 );
FOCUS_SetXFocus( hFocusTo );
}
/*****************************************************************
* SetFocus16 (USER.22)
*/
HWND16 SetFocus16( HWND16 hwnd )
{
return (HWND16)SetFocus32( hwnd );
}
/*****************************************************************
* SetFocus32 (USER32.480)
*/
HWND32 SetFocus32( HWND32 hwnd )
{
HWND32 hWndPrevFocus, hwndTop = hwnd;
WND *wndPtr = WIN_FindWndPtr( hwnd );
if (wndPtr)
{
/* Check if we can set the focus to this window */
while ( (wndPtr->dwStyle & (WS_CHILD | WS_POPUP)) == WS_CHILD )
{
if ( wndPtr->dwStyle & ( WS_MINIMIZE | WS_DISABLED) )
return 0;
if (!(wndPtr = wndPtr->parent)) return 0;
hwndTop = wndPtr->hwndSelf;
}
if( hwnd == hwndFocus ) return hwnd;
/* call hooks */
if( HOOK_CallHooks16( WH_CBT, HCBT_SETFOCUS, (WPARAM16)hwnd,
(LPARAM)hwndFocus) )
return 0;
/* activate hwndTop if needed. */
if (hwndTop != GetActiveWindow32())
{
if (!WINPOS_SetActiveWindow(hwndTop, 0, 0)) return 0;
if (!IsWindow( hwnd )) return 0; /* Abort if window destroyed */
}
}
else if( HOOK_CallHooks16( WH_CBT, HCBT_SETFOCUS, 0, (LPARAM)hwndFocus ) )
return 0;
/* Change focus and send messages */
hWndPrevFocus = hwndFocus;
FOCUS_SwitchFocus( hwndFocus , hwnd );
return hWndPrevFocus;
}
/*****************************************************************
* GetFocus16 (USER.23)
*/
HWND16 GetFocus16(void)
{
return (HWND16)hwndFocus;
}
/*****************************************************************
* GetFocus32 (USER32.239)
*/
HWND32 GetFocus32(void)
{
return hwndFocus;
}