IABSD.fr/xenocara/xserver/composite/compoverlay.c

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• Author : matthieu
  Date : 2015-09-16 19:10:19
  Hash : 86ea9f12
  Message : Update to xserver 1.17.2. tested by dcoppa@, jsg@, jasper@ & naddy@

• xserver/composite/compoverlay.c

• /*
   * Copyright (c) 2006, Oracle and/or its affiliates. All rights reserved.
   *
   * 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.
   *
   * Copyright © 2003 Keith Packard
   *
   * Permission to use, copy, modify, distribute, and sell this software and its
   * documentation for any purpose is hereby granted without fee, 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 Keith Packard not be used in
   * advertising or publicity pertaining to distribution of the software without
   * specific, written prior permission.  Keith Packard makes no
   * representations about the suitability of this software for any purpose.  It
   * is provided "as is" without express or implied warranty.
   *
   * KEITH PACKARD DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
   * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
   * EVENT SHALL KEITH PACKARD BE LIABLE FOR ANY SPECIAL, INDIRECT OR
   * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
   * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
   * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
   * PERFORMANCE OF THIS SOFTWARE.
   */
  
  #ifdef HAVE_DIX_CONFIG_H
  #include <dix-config.h>
  #endif
  
  #include "compint.h"
  #include "xace.h"
  
  #ifdef PANORAMIX
  #include "panoramiXsrv.h"
  #endif
  
  /*
   * Delete the given overlay client list element from its screen list.
   */
  void
  compFreeOverlayClient(CompOverlayClientPtr pOcToDel)
  {
      ScreenPtr pScreen = pOcToDel->pScreen;
      CompScreenPtr cs = GetCompScreen(pScreen);
      CompOverlayClientPtr *pPrev, pOc;
  
      for (pPrev = &cs->pOverlayClients; (pOc = *pPrev); pPrev = &pOc->pNext) {
          if (pOc == pOcToDel) {
              *pPrev = pOc->pNext;
              free(pOc);
              break;
          }
      }
  
      /* Destroy overlay window when there are no more clients using it */
      if (cs->pOverlayClients == NULL)
          compDestroyOverlayWindow(pScreen);
  }
  
  /*
   * Return the client's first overlay client rec from the given screen
   */
  CompOverlayClientPtr
  compFindOverlayClient(ScreenPtr pScreen, ClientPtr pClient)
  {
      CompScreenPtr cs = GetCompScreen(pScreen);
      CompOverlayClientPtr pOc;
  
      for (pOc = cs->pOverlayClients; pOc != NULL; pOc = pOc->pNext)
          if (pOc->pClient == pClient)
              return pOc;
  
      return NULL;
  }
  
  /*
   * Create an overlay client object for the given client
   */
  CompOverlayClientPtr
  compCreateOverlayClient(ScreenPtr pScreen, ClientPtr pClient)
  {
      CompScreenPtr cs = GetCompScreen(pScreen);
      CompOverlayClientPtr pOc;
  
      pOc = (CompOverlayClientPtr) malloc(sizeof(CompOverlayClientRec));
      if (pOc == NULL)
          return NULL;
  
      pOc->pClient = pClient;
      pOc->pScreen = pScreen;
      pOc->resource = FakeClientID(pClient->index);
      pOc->pNext = cs->pOverlayClients;
      cs->pOverlayClients = pOc;
  
      /*
       * Create a resource for this element so it can be deleted
       * when the client goes away.
       */
      if (!AddResource(pOc->resource, CompositeClientOverlayType, (void *) pOc))
          return NULL;
  
      return pOc;
  }
  
  /*
   * Create the overlay window and map it
   */
  Bool
  compCreateOverlayWindow(ScreenPtr pScreen)
  {
      CompScreenPtr cs = GetCompScreen(pScreen);
      WindowPtr pRoot = pScreen->root;
      WindowPtr pWin;
      XID attrs[] = { None, TRUE };       /* backPixmap, overrideRedirect */
      int result;
      int w = pScreen->width;
      int h = pScreen->height;
      int x = 0, y = 0;
  
  #ifdef PANORAMIX
      if (!noPanoramiXExtension) {
          x = -pScreen->x;
          y = -pScreen->y;
          w = PanoramiXPixWidth;
          h = PanoramiXPixHeight;
      }
  #endif
  
      pWin = cs->pOverlayWin =
          CreateWindow(cs->overlayWid, pRoot, x, y, w, h, 0,
                       InputOutput, CWBackPixmap | CWOverrideRedirect, &attrs[0],
                       pRoot->drawable.depth,
                       serverClient, pScreen->rootVisual, &result);
      if (pWin == NULL)
          return FALSE;
  
      if (!AddResource(pWin->drawable.id, RT_WINDOW, (void *) pWin))
          return FALSE;
  
      MapWindow(pWin, serverClient);
  
      return TRUE;
  }
  
  /*
   * Destroy the overlay window
   */
  void
  compDestroyOverlayWindow(ScreenPtr pScreen)
  {
      CompScreenPtr cs = GetCompScreen(pScreen);
  
      cs->pOverlayWin = NullWindow;
      FreeResource(cs->overlayWid, RT_NONE);
  }