path: root/nx-X11/programs/Xserver/hw/nxagent/NXevents.c

/**************************************************************************/
/*                                                                        */
/* Copyright (c) 2001, 2011 NoMachine (http://www.nomachine.com)          */
/* Copyright (c) 2008-2014 Oleksandr Shneyder <o.shneyder@phoca-gmbh.de>  */
/* Copyright (c) 2011-2016 Mike Gabriel <mike.gabriel@das-netzwerkteam.de>*/
/* Copyright (c) 2014-2016 Mihai Moldovan <ionic@ionic.de>                */
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/************************************************************

Copyright 1987, 1998  The Open Group

Permission to use, copy, modify, distribute, and sell this software and its
documentation for any purpose is hereby granted without fee, provided that
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The above copyright notice and this permission notice shall be included in
all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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Except as contained in this notice, the name of The Open Group shall not be
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in this Software without prior written authorization from The Open Group.


Copyright 1987 by Digital Equipment Corporation, Maynard, Massachusetts.

                        All Rights Reserved

Permission to use, copy, modify, and distribute this software and its 
documentation for any purpose and without fee is hereby granted, 
provided that the above copyright notice appear in all copies and that
both that copyright notice and this permission notice appear in 
supporting documentation, and that the name of Digital not be
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DIGITAL DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING
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********************************************************/

/* The panoramix components contained the following notice */
/*****************************************************************

Copyright (c) 1991, 1997 Digital Equipment Corporation, Maynard, Massachusetts.

Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
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The above copyright notice and this permission notice shall be included in
all copies or substantial portions of the Software.

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******************************************************************/

/*****************************************************************

Copyright 2003-2005 Sun Microsystems, Inc.

All rights reserved.

Permission is hereby granted, free of charge, to any person obtaining a
copy of this software and associated documentation files (the
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the Software and that both the above copyright notice(s) and this
permission notice appear in supporting documentation.

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OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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INDIRECT OR CONSEQUENTIAL DAMAGES, OR ANY DAMAGES WHATSOEVER RESULTING
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NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION
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shall not be used in advertising or otherwise to promote the sale, use
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******************************************************************/


#include <nx-X11/Xlib.h>

#include "../../dix/events.c"

#include "compext/Compext.h"

#include "Events.h"
#include "Windows.h"
#include "Args.h"

extern Display *nxagentDisplay;

extern WindowPtr nxagentLastEnteredWindow;

#ifdef VIEWPORT_FRAME
extern void nxagentInitViewportFrame(ScreenPtr, WindowPtr);
#endif
extern int  nxagentShadowInit(ScreenPtr, WindowPtr);

#ifdef NXAGENT_CLIPBOARD
extern int nxagentSendNotify(xEvent*);
#endif


void
ActivatePointerGrab(register DeviceIntPtr mouse, register GrabPtr grab, 
                    TimeStamp time, Bool autoGrab)
{
    xorg_ActivatePointerGrab(mouse, grab, time, autoGrab);

    #ifdef NXAGENT_SERVER

    /*
     * If grab is synchronous, events are delivered to clients only if they send
     * an AllowEvent request. If mode field in AllowEvent request is SyncPointer, the 
     * delivered event is saved in a queue and replayed later, when grab is released.
     * We should  export sync grab to X as async in order to avoid events to be 
     * queued twice, in the agent and in the X server. This solution have a drawback:
     * replayed events are not delivered to that application that are not clients of
     * the agent.
     * A different solution could be to make the grab asynchronous in the agent and 
     * to export it as synchronous. But this seems to be less safe.
     *
     * To make internal grab asynchronous, change previous line as follows.
     *
     * if (nxagentOption(Rootless))
     * {
     *   CheckGrabForSyncs(mouse, GrabModeAsync, (Bool)grab->keyboardMode);
     * }
     * else
     * {
     *   CheckGrabForSyncs(mouse,(Bool)grab->pointerMode, (Bool)grab->keyboardMode);
     * }
     */

    if (nxagentOption(Rootless) == 1)
    {
      /*
       * FIXME: We should use the correct value for the
       * cursor. Temporarily we set it to None.
       */

       int resource = nxagentWaitForResource(NXGetCollectGrabPointerResource,
                                                 nxagentCollectGrabPointerPredicate);

       NXCollectGrabPointer(nxagentDisplay, resource, nxagentWindow(grab -> window),
                                1, grab -> eventMask & PointerGrabMask,
                                    GrabModeAsync, GrabModeAsync, (grab -> confineTo) ?
                                        nxagentWindow(grab -> confineTo) : None,
                                            None, CurrentTime);
    }

    #endif /* NXAGENT_SERVER */
}

void
DeactivatePointerGrab(register DeviceIntPtr mouse)
{
    xorg_DeactivatePointerGrab(mouse);

    #ifdef NXAGENT_SERVER

    if (nxagentOption(Rootless) == 1)
    {
      XUngrabPointer(nxagentDisplay, CurrentTime);

      if (sprite.win == ROOT)
      {
        mouse -> button -> state &=
            ~(Button1Mask | Button2Mask | Button3Mask |
                  Button4Mask | Button5Mask);
      }
    }

    #endif
}

// int
// ProcAllowEvents(register ClientPtr client)
// {
//     TimeStamp		time;
//     DeviceIntPtr	mouse = inputInfo.pointer;
//     DeviceIntPtr	keybd = inputInfo.keyboard;
//     REQUEST(xAllowEventsReq);
// 
//     REQUEST_SIZE_MATCH(xAllowEventsReq);
//     time = ClientTimeToServerTime(stuff->time);
//     switch (stuff->mode)
//     {
// 	case ReplayPointer:
// 	    AllowSome(client, time, mouse, NOT_GRABBED);
// 	    break;
// 	case SyncPointer: 
// 	    AllowSome(client, time, mouse, FREEZE_NEXT_EVENT);
// 	    break;
// 	case AsyncPointer: 
// 	    AllowSome(client, time, mouse, THAWED);
// 	    break;
// 	case ReplayKeyboard: 
// 	    AllowSome(client, time, keybd, NOT_GRABBED);
// 	    break;
// 	case SyncKeyboard: 
// 	    AllowSome(client, time, keybd, FREEZE_NEXT_EVENT);
// 	    break;
// 	case AsyncKeyboard: 
// 	    AllowSome(client, time, keybd, THAWED);
// 	    break;
// 	case SyncBoth:
// 	    AllowSome(client, time, keybd, FREEZE_BOTH_NEXT_EVENT);
// 	    break;
// 	case AsyncBoth:
// 	    AllowSome(client, time, keybd, THAWED_BOTH);
// 	    break;
// 	default: 
// 	    client->errorValue = stuff->mode;
// 	    return BadValue;
//     }
// 
//     /*
//      * This is not necessary if we export grab to X as asynchronous.
//      *
//      * if (nxagentOption(Rootless) && stuff -> mode != ReplayKeyboard &&
//      *         stuff -> mode != SyncKeyboard && stuff -> mode != AsyncKeyboard)
//      * {
//      *   XAllowEvents(nxagentDisplay, stuff -> mode, CurrentTime);
//      * }
//      */
// 
//     return Success;
// }

static WindowPtr 
XYToWindow(int x, int y)
{
    register WindowPtr  pWin;
    BoxRec		box;

    spriteTraceGood = 1;	/* root window still there */

    if (nxagentOption(Rootless))
    {
      if (nxagentLastEnteredWindow == NULL)
      {
        return ROOT;
      }

      pWin = ROOT->lastChild;

      while (pWin && pWin != ROOT->firstChild && pWin != nxagentLastEnteredWindow)
      {
        pWin = pWin->prevSib;
      }
    }
    else
    {
      pWin = ROOT->firstChild;
    }

    while (pWin)
    {
	if ((pWin->mapped) &&
	    (x >= pWin->drawable.x - wBorderWidth (pWin)) &&
	    (x < pWin->drawable.x + (int)pWin->drawable.width +
	     wBorderWidth(pWin)) &&
	    (y >= pWin->drawable.y - wBorderWidth (pWin)) &&
	    (y < pWin->drawable.y + (int)pWin->drawable.height +
	     wBorderWidth (pWin))
#ifdef SHAPE
	    /* When a window is shaped, a further check
	     * is made to see if the point is inside
	     * borderSize
	     */
	    && (!wBoundingShape(pWin) || PointInBorderSize(pWin, x, y))
	    && (!wInputShape(pWin) ||
		RegionContainsPoint(
				wInputShape(pWin),
				x - pWin->drawable.x,
				y - pWin->drawable.y, &box))
#endif
	    )
	{
	    if (spriteTraceGood >= spriteTraceSize)
	    {
		spriteTraceSize += 10;
		spriteTrace = realloc(
		    spriteTrace, spriteTraceSize*sizeof(WindowPtr));
	    }
	    spriteTrace[spriteTraceGood++] = pWin;
	    pWin = pWin->firstChild;
	}
	else
	    pWin = pWin->nextSib;
    }
    return spriteTrace[spriteTraceGood-1];
}

static Bool
CheckMotion(xEvent *xE)
{
    WindowPtr prevSpriteWin = sprite.win;

#ifdef PANORAMIX
    if(!noPanoramiXExtension)
	return XineramaCheckMotion(xE);
#endif

    if (xE && !syncEvents.playingEvents)
    {
	if (sprite.hot.pScreen != sprite.hotPhys.pScreen)
	{
	    sprite.hot.pScreen = sprite.hotPhys.pScreen;
	    ROOT = sprite.hot.pScreen->root;
	}
	sprite.hot.x = XE_KBPTR.rootX;
	sprite.hot.y = XE_KBPTR.rootY;
	if (sprite.hot.x < sprite.physLimits.x1)
	    sprite.hot.x = sprite.physLimits.x1;
	else if (sprite.hot.x >= sprite.physLimits.x2)
	    sprite.hot.x = sprite.physLimits.x2 - 1;
	if (sprite.hot.y < sprite.physLimits.y1)
	    sprite.hot.y = sprite.physLimits.y1;
	else if (sprite.hot.y >= sprite.physLimits.y2)
	    sprite.hot.y = sprite.physLimits.y2 - 1;
#ifdef SHAPE
	if (sprite.hotShape)
	    ConfineToShape(sprite.hotShape, &sprite.hot.x, &sprite.hot.y);
#endif
	sprite.hotPhys = sprite.hot;

#ifdef NXAGENT_SERVER
        /*
         * This code force cursor position to be inside the
         * root window of the agent. We can't view a reason
         * to do this and it interacts in an undesirable way
         * with toggling fullscreen.
         *
         * if ((sprite.hotPhys.x != XE_KBPTR.rootX) ||
         *          (sprite.hotPhys.y != XE_KBPTR.rootY))
         * {
         *   (*sprite.hotPhys.pScreen->SetCursorPosition)(
         *       sprite.hotPhys.pScreen,
         *           sprite.hotPhys.x, sprite.hotPhys.y, FALSE);
         * }
         */
#else
	if ((sprite.hotPhys.x != XE_KBPTR.rootX) ||
	    (sprite.hotPhys.y != XE_KBPTR.rootY))
	{
	    (*sprite.hotPhys.pScreen->SetCursorPosition)(
		sprite.hotPhys.pScreen,
		sprite.hotPhys.x, sprite.hotPhys.y, FALSE);
	}
#endif
	XE_KBPTR.rootX = sprite.hot.x;
	XE_KBPTR.rootY = sprite.hot.y;
    }

    sprite.win = XYToWindow(sprite.hot.x, sprite.hot.y);
#ifdef notyet
    if (!(sprite.win->deliverableEvents &
	  Motion_Filter(inputInfo.pointer->button))
	!syncEvents.playingEvents)
    {
	/* XXX Do PointerNonInterestBox here */
    }
#endif
    if (sprite.win != prevSpriteWin)
    {
	if (prevSpriteWin != NullWindow) {
	    if (!xE)
		UpdateCurrentTimeIf();
	    DoEnterLeaveEvents(prevSpriteWin, sprite.win, NotifyNormal);
	}
	PostNewCursor();
        return FALSE;
    }
    return TRUE;
}

void
DefineInitialRootWindow(register WindowPtr win)
{
    register ScreenPtr pScreen = win->drawable.pScreen;
    sprite.hotPhys.pScreen = pScreen;
    sprite.hotPhys.x = pScreen->width / 2;
    sprite.hotPhys.y = pScreen->height / 2;
    sprite.hot = sprite.hotPhys;
    sprite.hotLimits.x2 = pScreen->width;
    sprite.hotLimits.y2 = pScreen->height;
    sprite.win = win;
    sprite.current = wCursor (win);
    sprite.current->refcnt++;
    spriteTraceGood = 1;
    ROOT = win;
    (*pScreen->CursorLimits) (
	pScreen, sprite.current, &sprite.hotLimits, &sprite.physLimits);
    sprite.confined = FALSE;
    (*pScreen->ConstrainCursor) (pScreen, &sprite.physLimits);
    (*pScreen->SetCursorPosition) (pScreen, sprite.hot.x, sprite.hot.y, FALSE);
    (*pScreen->DisplayCursor) (pScreen, sprite.current);

#ifdef PANORAMIX
    if(!noPanoramiXExtension) {
	sprite.hotLimits.x1 = -panoramiXdataPtr[0].x;
	sprite.hotLimits.y1 = -panoramiXdataPtr[0].y;
	sprite.hotLimits.x2 = PanoramiXPixWidth  - panoramiXdataPtr[0].x;
	sprite.hotLimits.y2 = PanoramiXPixHeight - panoramiXdataPtr[0].y;
	sprite.physLimits = sprite.hotLimits;
	sprite.confineWin = NullWindow;
#ifdef SHAPE
        sprite.hotShape = NullRegion;
#endif
	sprite.screen = pScreen;
	/* gotta UNINIT these someplace */
	RegionNull(&sprite.Reg1);
	RegionNull(&sprite.Reg2);
    }
#endif

    #ifdef VIEWPORT_FRAME
    nxagentInitViewportFrame(pScreen, win);
    #endif

    if (nxagentOption(Shadow))
    {
      if (nxagentShadowInit(pScreen, win) == -1)
      {
        FatalError("Failed to connect to display '%s'", nxagentShadowDisplayName);
      }
    }
}

int
ProcSendEvent(ClientPtr client)
{
#ifdef NXAGENT_CLIPBOARD

    REQUEST(xSendEventReq);

    REQUEST_SIZE_MATCH(xSendEventReq);

    if (stuff -> event.u.u.type == SelectionNotify)
    {
	if (nxagentSendNotify(&stuff->event) == 1)
	  return Success;
    }
#endif
    return xorg_ProcSendEvent(client);
}