xserver

xiquerypointer.c (7072B)

---

 /*
  * Copyright 2007-2008 Peter Hutterer
  *
  * 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 to use, copy, modify, merge, publish, distribute, sublicense,
  * and/or sell copies of the Software, and to permit persons to whom the
  * Software is furnished to do so, subject to the following conditions:
  *
  * The above copyright notice and this permission notice (including the next
  * paragraph) 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
  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
  * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
  * DEALINGS IN THE SOFTWARE.
  *
  * Author: Peter Hutterer, University of South Australia, NICTA
  */
 
 /***********************************************************************
  *
  * Request to query the pointer location of an extension input device.
  *
  */
 
 #ifdef HAVE_DIX_CONFIG_H
 #include <dix-config.h>
 #endif
 
 #include <X11/X.h>              /* for inputstr.h    */
 #include <X11/Xproto.h>         /* Request macro     */
 #include "inputstr.h"           /* DeviceIntPtr      */
 #include "windowstr.h"          /* window structure  */
 #include <X11/extensions/XI.h>
 #include <X11/extensions/XI2proto.h>
 #include "extnsionst.h"
 #include "exevents.h"
 #include "exglobals.h"
 #include "eventconvert.h"
 #include "scrnintstr.h"
 #include "xkbsrv.h"
 
 #ifdef PANORAMIX
 #include "panoramiXsrv.h"
 #endif
 
 #include "inpututils.h"
 #include "xiquerypointer.h"
 
 /***********************************************************************
  *
  * This procedure allows a client to query the pointer of a device.
  *
  */
 
 int _X_COLD
 SProcXIQueryPointer(ClientPtr client)
 {
     REQUEST(xXIQueryPointerReq);
     REQUEST_SIZE_MATCH(xXIQueryPointerReq);
 
     swaps(&stuff->length);
     swaps(&stuff->deviceid);
     swapl(&stuff->win);
     return (ProcXIQueryPointer(client));
 }
 
 int
 ProcXIQueryPointer(ClientPtr client)
 {
     int rc;
     xXIQueryPointerReply rep;
     DeviceIntPtr pDev, kbd;
     WindowPtr pWin, t;
     SpritePtr pSprite;
     XkbStatePtr state;
     char *buttons = NULL;
     int buttons_size = 0;       /* size of buttons array */
     XIClientPtr xi_client;
     Bool have_xi22 = FALSE;
 
     REQUEST(xXIQueryPointerReq);
     REQUEST_SIZE_MATCH(xXIQueryPointerReq);
 
     /* Check if client is compliant with XInput 2.2 or later. Earlier clients
      * do not know about touches, so we must report emulated button presses. 2.2
      * and later clients are aware of touches, so we don't include emulated
      * button presses in the reply. */
     xi_client = dixLookupPrivate(&client->devPrivates, XIClientPrivateKey);
     if (version_compare(xi_client->major_version,
                         xi_client->minor_version, 2, 2) >= 0)
         have_xi22 = TRUE;
 
     rc = dixLookupDevice(&pDev, stuff->deviceid, client, DixReadAccess);
     if (rc != Success) {
         client->errorValue = stuff->deviceid;
         return rc;
     }
 
     if (pDev->valuator == NULL || IsKeyboardDevice(pDev) || (!IsMaster(pDev) && !IsFloating(pDev))) {   /* no attached devices */
         client->errorValue = stuff->deviceid;
         return BadDevice;
     }
 
     rc = dixLookupWindow(&pWin, stuff->win, client, DixGetAttrAccess);
     if (rc != Success) {
         client->errorValue = stuff->win;
         return rc;
     }
 
     if (pDev->valuator->motionHintWindow)
         MaybeStopHint(pDev, client);
 
     if (IsMaster(pDev))
         kbd = GetMaster(pDev, MASTER_KEYBOARD);
     else
         kbd = (pDev->key) ? pDev : NULL;
 
     pSprite = pDev->spriteInfo->sprite;
 
     rep = (xXIQueryPointerReply) {
         .repType = X_Reply,
         .RepType = X_XIQueryPointer,
         .sequenceNumber = client->sequence,
         .length = 6,
         .root = (GetCurrentRootWindow(pDev))->drawable.id,
         .root_x = double_to_fp1616(pSprite->hot.x),
         .root_y = double_to_fp1616(pSprite->hot.y),
         .child = None
     };
 
     if (kbd) {
         state = &kbd->key->xkbInfo->state;
         rep.mods.base_mods = state->base_mods;
         rep.mods.latched_mods = state->latched_mods;
         rep.mods.locked_mods = state->locked_mods;
 
         rep.group.base_group = state->base_group;
         rep.group.latched_group = state->latched_group;
         rep.group.locked_group = state->locked_group;
     }
 
     if (pDev->button) {
         int i;
 
         rep.buttons_len =
             bytes_to_int32(bits_to_bytes(pDev->button->numButtons));
         rep.length += rep.buttons_len;
         buttons = calloc(rep.buttons_len, 4);
         if (!buttons)
             return BadAlloc;
         buttons_size = rep.buttons_len * 4;
 
         for (i = 1; i < pDev->button->numButtons; i++)
             if (BitIsOn(pDev->button->down, i))
                 SetBit(buttons, pDev->button->map[i]);
 
         if (!have_xi22 && pDev->touch && pDev->touch->buttonsDown > 0)
             SetBit(buttons, pDev->button->map[1]);
     }
     else
         rep.buttons_len = 0;
 
     if (pSprite->hot.pScreen == pWin->drawable.pScreen) {
         rep.same_screen = xTrue;
         rep.win_x = double_to_fp1616(pSprite->hot.x - pWin->drawable.x);
         rep.win_y = double_to_fp1616(pSprite->hot.y - pWin->drawable.y);
         for (t = pSprite->win; t; t = t->parent)
             if (t->parent == pWin) {
                 rep.child = t->drawable.id;
                 break;
             }
     }
     else {
         rep.same_screen = xFalse;
         rep.win_x = 0;
         rep.win_y = 0;
     }
 
 #ifdef PANORAMIX
     if (!noPanoramiXExtension) {
         rep.root_x += double_to_fp1616(screenInfo.screens[0]->x);
         rep.root_y += double_to_fp1616(screenInfo.screens[0]->y);
         if (stuff->win == rep.root) {
             rep.win_x += double_to_fp1616(screenInfo.screens[0]->x);
             rep.win_y += double_to_fp1616(screenInfo.screens[0]->y);
         }
     }
 #endif
 
     WriteReplyToClient(client, sizeof(xXIQueryPointerReply), &rep);
     if (buttons)
         WriteToClient(client, buttons_size, buttons);
 
     free(buttons);
 
     return Success;
 }
 
 /***********************************************************************
  *
  * This procedure writes the reply for the XIQueryPointer function,
  * if the client and server have a different byte ordering.
  *
  */
 
 void
 SRepXIQueryPointer(ClientPtr client, int size, xXIQueryPointerReply * rep)
 {
     swaps(&rep->sequenceNumber);
     swapl(&rep->length);
     swapl(&rep->root);
     swapl(&rep->child);
     swapl(&rep->root_x);
     swapl(&rep->root_y);
     swapl(&rep->win_x);
     swapl(&rep->win_y);
     swaps(&rep->buttons_len);
 
     WriteToClient(client, size, rep);
 }