Merge branch 'sunweaver-pr/nxcompshad-autoreconf' into 3.6.x

Attributes GH PR #474: https://github.com/ArcticaProject/nx-libs/pull/474

1 files changed, 1598 insertions, 0 deletions

diff --git a/nxcompshad/src/X11.cpp b/nxcompshad/src/X11.cpp
new file mode 100644
index 000000000..3643df731
--- /dev/null
+++ b/nxcompshad/src/X11.cpp
@@ -0,0 +1,1598 @@
+/**************************************************************************/
+/*                                                                        */
+/* Copyright (c) 2001, 2011 NoMachine (http://www.nomachine.com)          */
+/* Copyright (c) 2008-2014 Oleksandr Shneyder <o.shneyder@phoca-gmbh.de>  */
+/* Copyright (c) 2014-2016 Ulrich Sibiller <uli42@gmx.de>                 */
+/* Copyright (c) 2014-2016 Mihai Moldovan <ionic@ionic.de>                */
+/* Copyright (c) 2011-2016 Mike Gabriel <mike.gabriel@das-netzwerkteam.de>*/
+/* Copyright (c) 2015-2016 Qindel Group (http://www.qindel.com)           */
+/*                                                                        */
+/* NXCOMPSHAD, NX protocol compression and NX extensions to this software */
+/* are copyright of the aforementioned persons and companies.             */
+/*                                                                        */
+/* Redistribution and use of the present software is allowed according    */
+/* to terms specified in the file LICENSE which comes in the source       */
+/* distribution.                                                          */
+/*                                                                        */
+/* All rights reserved.                                                   */
+/*                                                                        */
+/* NOTE: This software has received contributions from various other      */
+/* contributors, only the core maintainers and supporters are listed as   */
+/* copyright holders. Please contact us, if you feel you should be listed */
+/* as copyright holder, as well.                                          */
+/*                                                                        */
+/**************************************************************************/
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#if !defined(__CYGWIN32__) && !defined(WIN32)
+
+#define PANIC
+#define WARNING
+#undef  TEST
+#undef  DEBUG
+
+#include <nx-X11/Xlibint.h>
+#include <nx-X11/Xproto.h>
+#include <nx-X11/keysym.h>
+#include "X11/include/XTest_nxcompshad.h"
+#include <string.h>
+#include <sys/ipc.h>
+#include <sys/shm.h>
+
+#include "Poller.h"
+#include "Logger.h"
+#include "Shadow.h"
+
+#define ROUNDUP(nbytes, pad) ((((nbytes) + ((pad)-1)) / (pad)) * ((pad)>>3))
+
+#undef  TRANSLATE_KEYCODES
+#define TRANSLATE_ALWAYS
+
+typedef struct {
+    KeySym  *map;
+    KeyCode minKeyCode,
+            maxKeyCode;
+    int     mapWidth;
+} KeySymsRec, *KeySymsPtr;
+
+extern KeySymsPtr NXShadowKeymap;
+
+typedef struct _KeyPressed
+{
+  KeyCode keyRcvd;
+  KeyCode keySent;
+  struct _KeyPressed *next;
+} KeyPressedRec;
+
+static KeyPressedRec *shadowKeyPressedPtr = NULL;
+
+static KeySym *shadowKeysyms = NULL;
+static KeySym *masterKeysyms = NULL;
+
+static KeySym *shadowKeymap = NULL;
+
+static int shadowMinKey, shadowMaxKey, shadowMapWidth;
+static int masterMinKey, masterMaxKey, masterMapWidth;
+
+static int leftShiftOn = 0;
+static int rightShiftOn = 0;
+static int modeSwitchOn = 0;
+static int level3ShiftOn = 0;
+static int altROn = 0;
+
+static int sentFakeLShiftPress = 0;
+static int sentFakeLShiftRelease = 0;
+static int sentFakeRShiftRelease = 0;
+static int sentFakeModeSwitchPress = 0;
+static int sentFakeModeSwitchRelease = 0;
+static int sentFakeLevel3ShiftPress = 0;
+static int sentFakeLevel3ShiftRelease = 0;
+static int sentFakeAltRRelease = 0;
+
+static int shmInitTrap = 0;
+
+Poller::Poller(Input *input, Display *display, int depth) : CorePoller(input, display)
+{
+  logTrace("Poller::Poller");
+
+  display_ = NULL;
+  shadowDisplayName_ = input -> getShadowDisplayName();
+
+  tmpBuffer_ = NULL;
+
+  xtestExtension_  = -1;
+  shmExtension_    = -1;
+  randrExtension_  = -1;
+  damageExtension_ = -1;
+
+  shadowDisplayUid_ = -1;
+
+  image_ = NULL;
+
+  shminfo_ = NULL;
+}
+
+Poller::~Poller()
+{
+  logTrace("Poller::~Poller");
+
+  if (shmExtension_ == 1)
+  {
+    XShmDetach(display_, shminfo_);
+    XDestroyImage(image_);
+    shmdt(shminfo_ -> shmaddr);
+    shmctl(shminfo_ -> shmid, IPC_RMID, 0);
+  }
+
+  if (shminfo_ != NULL)
+  {
+    delete shminfo_;
+
+    shminfo_ = NULL;
+  }
+
+  if (display_ != NULL)
+  {
+    XCloseDisplay(display_);
+  }
+
+  if (tmpBuffer_ != NULL && shmExtension_ != -1 && damageExtension_ == 1)
+  {
+    XFree(tmpBuffer_);
+
+    tmpBuffer_ = NULL;
+  }
+}
+
+int Poller::init()
+{
+  logTrace("Poller::init");
+
+  if (display_ == NULL)
+  {
+    display_ = XOpenDisplay(shadowDisplayName_);
+
+    setShadowDisplay(display_);
+  }
+
+  logTest("Poller::init:" ,"Shadow display [%p] name [%s].", (Display *) display_, shadowDisplayName_);
+
+  if (display_ == NULL)
+  {
+    logTest("Poller::init", "Failed to connect to display [%s].", shadowDisplayName_ ? shadowDisplayName_ : "");
+
+    return -1;
+  }
+
+  setRootSize();
+
+  logTest("Poller::init", "Screen geometry is [%d, %d] depth is [%d] bpl [%d] bpp [%d].",
+              width_, height_, depth_, bpl_, bpp_);
+
+  xtestInit();
+
+  shmInit();
+
+  randrInit();
+
+  damageInit();
+
+  return CorePoller::init();
+}
+
+int Poller::updateShadowFrameBuffer(void)
+{
+  if (shmExtension_ == 1)
+  {
+    if (XShmGetImage(display_, DefaultRootWindow(display_), image_, 0, 0, AllPlanes) == 0)
+    {
+      logDebug("Poller::updateShadowFrameBuffer", "XShmGetImage failed!");
+
+      return -1;
+    }
+  }
+  else
+  {
+    image_ = XGetImage(display_, DefaultRootWindow(display_), 0, 0, width_,
+                           height_, AllPlanes, ZPixmap);
+
+    if (image_ == NULL)
+    {
+      logDebug("Poller::updateShadowFrameBuffer", "XGetImage failed!");
+
+      return -1;
+    }
+  }
+
+  return 1;
+}
+
+char *Poller::getRect(XRectangle r)
+{
+  logTrace("Poller::getRect");
+
+  logDebug("Poller::getRect", "Going to retrive rectangle [%d, %d, %d, %d].",
+              r.x, r.y, r.width, r.height);
+
+  if (shmExtension_ == 1)
+  {
+    if (damageExtension_ == 1)
+    {
+      image_ -> width = r.width;
+      image_ -> height = r.height;
+
+      image_ -> bytes_per_line = ROUNDUP((image_ -> bits_per_pixel * image_ -> width), image_ -> bitmap_pad);
+
+      if (XShmGetImage(display_, DefaultRootWindow(display_), image_, r.x, r.y, AllPlanes) == 0)
+      {
+        logDebug("Poller::getRect", "XShmGetImage failed!");
+
+        return NULL;
+      }
+
+      tmpBuffer_ = image_ -> data;
+    }
+    else
+    {
+      image_ -> width  = r.width;
+      image_ -> height = r.height; 
+
+      image_ -> bytes_per_line = ROUNDUP((image_ -> bits_per_pixel * image_ -> width), image_ -> bitmap_pad);
+
+      if (XShmGetImage(display_, DefaultRootWindow(display_), image_, r.x, r.y, AllPlanes) == 0)
+      {
+        logDebug("Poller::getRect", "XShmGetImage failed!");
+      }
+
+      tmpBuffer_ = image_ -> data;
+    }
+  }
+  else
+  {
+    if (tmpBuffer_)
+    {
+      XFree(tmpBuffer_);
+      tmpBuffer_ = NULL;
+    }
+
+    image_ = XGetImage(display_, DefaultRootWindow(display_), r.x, r.y, r.width, r.height, AllPlanes, ZPixmap);
+
+    if (image_ == NULL)
+    {
+      logError("Poller::getRect", ESET(ENOMSG));
+
+      return NULL;
+    }
+
+    tmpBuffer_ = image_ -> data;
+
+    if (image_ -> obdata)
+    {
+      XFree(image_ -> obdata);
+    }
+
+    XFree(image_);
+
+    image_ = NULL;
+  }
+
+  return tmpBuffer_;
+}
+
+void Poller::shmInit(void)
+{
+  int major, minor;
+  int pixmaps;
+
+  logTest("Poller::shmInit", "Added shmExtension_ [%d].", shmExtension_);
+
+  if (shmExtension_ >= 0)
+  {
+    logDebug("Poller::shmInit", "Called with shared memory already initialized.");
+
+    if (shmInitTrap == 0)
+    {
+      return;
+    }
+  }
+
+  if (shmExtension_ < 0 && NXShadowOptions.optionShmExtension == 0)
+  {
+    shmExtension_ = 0;
+
+    logUser("Poller::shmInit: Disabling use of MIT-SHM extension.\n");
+
+    return;
+  }
+
+  if (XShmQueryVersion(display_, &major, &minor, &pixmaps) == 0)
+  {
+    logDebug("Poller::shmInit", "MIT_SHM: Shared memory extension not available.");
+
+    shmExtension_ = 0;
+  }
+  else
+  {
+    logDebug("Poller::shmInit", "MIT_SHM: Shared memory extension available.");
+
+    if (shminfo_ != NULL)
+    {
+      destroyShmImage();
+    }
+
+    shminfo_ = (XShmSegmentInfo* ) new XShmSegmentInfo;
+
+    if (shminfo_ == NULL)
+    {
+      logError("Poller::shmInit", ESET(ENOMEM));
+
+      shmExtension_ = 0;
+
+      return;
+    }
+
+    image_ = (XImage *)XShmCreateImage(display_, display_ -> screens[0].root_visual, depth_, ZPixmap,
+                                           NULL,  shminfo_, width_, height_);
+
+    if (image_ == NULL)
+    {
+      logError("Poller::shmInit", ESET(ENOMSG));
+
+      shmExtension_ = 0;
+
+      return;
+    }
+
+    shadowDisplayUid_ = NXShadowOptions.optionShadowDisplayUid;
+
+    logDebug("Poller::shmInit", "Master X server uid [%d].", NXShadowOptions.optionShadowDisplayUid);
+
+    shminfo_ -> shmid = shmget(IPC_PRIVATE, image_ -> bytes_per_line * image_ -> height, IPC_CREAT | 0666);
+
+    if (shminfo_ -> shmid < 0)
+    {
+      logDebug("Poller::shmInit", "kernel id error.");
+
+      shmExtension_ = 0;
+
+      return;
+    }
+
+    logDebug("Poller::shmInit", "Created shm segment with shmid [%d].", shminfo_ -> shmid);
+
+    shminfo_ -> shmaddr = (char *)shmat(shminfo_ -> shmid, 0, 0);
+
+    if (shminfo_ -> shmaddr < 0)
+    {
+      logWarning("Poller::shmInit", "Couldn't attach to shm segment.");
+    }
+
+    logDebug("Poller::shmInit", "shminfo_ -> shmaddr [%p].", shminfo_ -> shmaddr);
+
+    image_ -> data = shminfo_ -> shmaddr;
+
+    shminfo_ -> readOnly = 0;
+
+    if (XShmAttach(display_, shminfo_) == 0)
+    {
+      logDebug("Poller::shmInit", "XShmAttach failed.");
+
+      shmExtension_ = 0;
+
+      return;
+    }
+
+    //
+    // Mark the shm segment to be destroyed after
+    // the last process detach. Let the X server
+    // complete the X_ShmAttach request, before.
+    //
+
+    XSync(display_, 0);
+
+    struct shmid_ds ds;
+
+    shmctl(shminfo_ -> shmid, IPC_STAT, &ds);
+
+    if (shadowDisplayUid_ != -1)
+    {
+      ds.shm_perm.uid = (ushort) shadowDisplayUid_;
+    }
+    else
+    {
+      logWarning("Poller::shmInit", "Couldn't set uid for shm segment.");
+    }
+
+    ds.shm_perm.mode = 0600;
+
+    shmctl(shminfo_ -> shmid, IPC_SET, &ds);
+
+    shmctl(shminfo_ -> shmid, IPC_STAT, &ds);
+
+    shmctl(shminfo_ -> shmid, IPC_RMID, 0);
+
+    logDebug("Poller::shmInit", "Number of attaches to shm segment [%d] are [%d].\n",
+                 shminfo_ -> shmid, (int) ds.shm_nattch);
+
+    if (ds.shm_nattch > 2)
+    {
+      logWarning("Poller::shmInit", "More than two attaches to the shm segment.");
+
+      destroyShmImage();
+
+      shmExtension_ = 0;
+
+      return;
+    }
+
+    shmExtension_ = 1;
+  }
+}
+
+void Poller::keymapShadowInit(Display *display)
+{
+  int i, len;
+  CARD32 *map;
+
+  if (NXShadowKeymap != NULL)
+  {
+    shadowMinKey   = NXShadowKeymap -> minKeyCode;
+    shadowMaxKey   = NXShadowKeymap -> maxKeyCode;
+    shadowMapWidth = NXShadowKeymap -> mapWidth;
+
+    len = (shadowMaxKey - shadowMinKey + 1) * shadowMapWidth;
+
+    map = (CARD32 *) NXShadowKeymap -> map;
+
+    if (shadowKeymap != NULL)
+    {
+      free(shadowKeymap);
+    }
+
+    shadowKeymap = (KeySym *) malloc(len * sizeof(KeySym));
+
+    if (shadowKeymap != NULL)
+    {
+      for (i = 0; i < len; i++)
+      {
+        shadowKeymap[i] = map[i];
+      }
+
+      shadowKeysyms = shadowKeymap;
+    }
+  }
+
+  if (shadowKeysyms == NULL)
+  {
+    XDisplayKeycodes(display, &shadowMinKey, &shadowMaxKey);
+
+    shadowKeysyms = XGetKeyboardMapping(display, shadowMinKey, shadowMaxKey - shadowMinKey + 1,
+                                            &shadowMapWidth);
+  }
+
+  #ifdef DEBUG
+  if (shadowKeysyms != NULL)
+  {
+    for (i = 0; i < (shadowMaxKey - shadowMinKey + 1) * shadowMapWidth; i++)
+    {
+      if (i % shadowMapWidth == 0)
+      {
+        logDebug("Poller::keymapShadowInit", "keycode [%d]", (int) (i / shadowMapWidth));
+      }
+
+      logDebug("\tkeysym", " [%x] [%s]", (unsigned int) shadowKeysyms[i], XKeysymToString(shadowKeysyms[i]));
+    }
+  }
+  #endif
+}
+
+void Poller::keymapMasterInit()
+{
+  XDisplayKeycodes(display_, &masterMinKey, &masterMaxKey);
+
+  masterKeysyms = XGetKeyboardMapping(display_, masterMinKey, masterMaxKey - masterMinKey + 1,
+                                          &masterMapWidth);
+
+  #ifdef DEBUG
+  if (masterKeysyms != NULL)
+  {
+    for (int i = 0; i < (masterMaxKey - masterMinKey + 1) * masterMapWidth; i++)
+    {
+      if (i % masterMapWidth == 0)
+      {
+        logDebug("Poller::keymapMasterInit", "keycode [%d]", (int) (i / masterMapWidth));
+      }
+
+      logDebug("\tkeysym", " [%x] [%s]", (unsigned int) masterKeysyms[i], XKeysymToString(masterKeysyms[i]));
+    }
+  }
+  #endif
+}
+
+KeySym Poller::keymapKeycodeToKeysym(KeyCode keycode, KeySym *keysyms,
+                                         int minKey, int mapWidth, int col)
+{
+  int index = ((keycode - minKey) * mapWidth) + col;
+  return keysyms[index];
+}
+
+KeyCode Poller::keymapKeysymToKeycode(KeySym keysym, KeySym *keysyms,
+                                          int minKey, int maxKey, int mapWidth, int *col)
+{
+  for (int i = 0; i < (maxKey - minKey + 1) * mapWidth; i++)
+  {
+    if (keysyms[i] == keysym)
+    {
+      *col = i % mapWidth;
+      return i / mapWidth + minKey;
+    }
+  }
+  return 0;
+}
+
+KeyCode Poller::translateKeysymToKeycode(KeySym keysym, int *col)
+{
+  KeyCode keycode;
+
+  keycode = keymapKeysymToKeycode(keysym, masterKeysyms, masterMinKey,
+                                      masterMaxKey, masterMapWidth, col);
+
+  if (keycode == 0)
+  {
+    if (((keysym >> 8) == 0) && (keysym >= XK_a) && (keysym <= XK_z))
+    {
+      /*
+       * The master session has a Solaris keyboard.
+       */
+
+      keysym -= XK_a - XK_A;
+
+      keycode = keymapKeysymToKeycode(keysym, masterKeysyms, masterMinKey,
+                                          masterMaxKey, masterMapWidth, col);
+    }
+    else if (keysym == XK_Shift_R)
+    {
+      keysym = XK_Shift_L;
+
+      keycode = keymapKeysymToKeycode(keysym, masterKeysyms, masterMinKey,
+                                          masterMaxKey, masterMapWidth, col);
+    }
+    else if (keysym == XK_Shift_L)
+    {
+      keysym = XK_Shift_R;
+
+      keycode = keymapKeysymToKeycode(keysym, masterKeysyms, masterMinKey,
+                                          masterMaxKey, masterMapWidth, col);
+    }
+    else if (keysym == XK_ISO_Level3_Shift)
+    {
+      keysym = XK_Mode_switch;
+
+      if ((keycode = keymapKeysymToKeycode(keysym, masterKeysyms, masterMinKey,
+                                               masterMaxKey, masterMapWidth, col)) == 0)
+      {
+        keysym = XK_Alt_R;
+
+        keycode = keymapKeysymToKeycode(keysym, masterKeysyms, masterMinKey,
+                                            masterMaxKey, masterMapWidth, col);
+      }
+    }
+    else if (keysym == XK_Alt_R)
+    {
+      keysym = XK_ISO_Level3_Shift;
+
+      if ((keycode = keymapKeysymToKeycode(keysym, masterKeysyms, masterMinKey,
+                                               masterMaxKey, masterMapWidth, col)) == 0)
+      {
+        keysym = XK_Mode_switch;
+
+        keycode = keymapKeysymToKeycode(keysym, masterKeysyms, masterMinKey,
+                                            masterMaxKey, masterMapWidth, col);
+      }
+    }
+  }
+  return keycode;
+}
+
+Bool Poller::checkModifierKeys(KeySym keysym, Bool isKeyPress)
+{
+  switch (keysym)
+  {
+    case XK_Shift_L:
+      leftShiftOn = isKeyPress;
+      return True;
+    case XK_Shift_R:
+      rightShiftOn = isKeyPress;
+      return True;
+    case XK_Mode_switch:
+      modeSwitchOn = isKeyPress;
+      return True;
+    case XK_ISO_Level3_Shift:
+      level3ShiftOn = isKeyPress;
+      return True;
+    case XK_Alt_R:
+      altROn = isKeyPress;
+      return True;
+    default:
+      return False;
+  }
+}
+
+void Poller::sendFakeModifierEvents(int pos, Bool skip)
+{
+  KeySym fakeKeysym;
+  int col;
+
+  if ((!leftShiftOn && !rightShiftOn) &&
+          (!modeSwitchOn && !level3ShiftOn && !altROn))
+  {
+    if (pos == 1 || pos == 3)
+    {
+      fakeKeysym = keymapKeysymToKeycode(XK_Shift_L, masterKeysyms, masterMinKey,
+                                             masterMaxKey, masterMapWidth, &col);
+      XTestFakeKeyEvent(display_, fakeKeysym, 1, 0);
+      sentFakeLShiftPress = 1;
+    }
+    if (pos == 2 || pos == 3)
+    {
+      fakeKeysym = keymapKeysymToKeycode(XK_ISO_Level3_Shift, masterKeysyms, masterMinKey,
+                                             masterMaxKey, masterMapWidth, &col);
+
+      if (fakeKeysym == 0)
+      {
+        fakeKeysym = keymapKeysymToKeycode(XK_Mode_switch, masterKeysyms, masterMinKey,
+                                               masterMaxKey, masterMapWidth, &col);
+        sentFakeModeSwitchPress = 1;
+      }
+      else
+      {
+        sentFakeLevel3ShiftPress = 1;
+      }
+
+      XTestFakeKeyEvent(display_, fakeKeysym, 1, 0);
+    }
+  }
+
+  else if ((leftShiftOn || rightShiftOn) &&
+               (!modeSwitchOn && !level3ShiftOn && !altROn))
+  {
+    if ((pos == 0 && !skip) || pos == 2)
+    {
+      if (leftShiftOn)
+      {
+        fakeKeysym = keymapKeysymToKeycode(XK_Shift_L, masterKeysyms, masterMinKey,
+                                               masterMaxKey, masterMapWidth, &col);
+        XTestFakeKeyEvent(display_, fakeKeysym, 0, 0);
+        sentFakeLShiftRelease = 1;
+      }
+      if (rightShiftOn)
+      {
+        fakeKeysym = keymapKeysymToKeycode(XK_Shift_R, masterKeysyms, masterMinKey,
+                                               masterMaxKey, masterMapWidth, &col);
+        XTestFakeKeyEvent(display_, fakeKeysym, 0, 0);
+        sentFakeRShiftRelease = 1;
+      }
+    }
+    if (pos == 2 || pos ==3)
+    {
+      fakeKeysym = keymapKeysymToKeycode(XK_ISO_Level3_Shift, masterKeysyms, masterMinKey,
+                                             masterMaxKey, masterMapWidth, &col);
+
+      if (fakeKeysym == 0)
+      {
+        fakeKeysym = keymapKeysymToKeycode(XK_Mode_switch, masterKeysyms, masterMinKey,
+                                               masterMaxKey, masterMapWidth, &col);
+        sentFakeModeSwitchPress = 1;
+      }
+      else
+      {
+        sentFakeLevel3ShiftPress = 1;
+      }
+
+      XTestFakeKeyEvent(display_, fakeKeysym, 1, 0);
+    }
+  }
+
+  else if ((!leftShiftOn && !rightShiftOn) &&
+               (modeSwitchOn || level3ShiftOn || altROn))
+  {
+    if (pos == 1 || pos == 3)
+    {
+      fakeKeysym = keymapKeysymToKeycode(XK_Shift_L, masterKeysyms, masterMinKey,
+                                             masterMaxKey, masterMapWidth, &col);
+      XTestFakeKeyEvent(display_, fakeKeysym, 1, 0);
+      sentFakeLShiftPress = 1;
+    }
+    if (pos == 0 || pos == 1)
+    {
+      if (modeSwitchOn)
+      {
+        fakeKeysym = keymapKeysymToKeycode(XK_Mode_switch, masterKeysyms, masterMinKey,
+                                               masterMaxKey, masterMapWidth, &col);
+        XTestFakeKeyEvent(display_, fakeKeysym, 0, 0);
+        sentFakeModeSwitchRelease = 1;
+      }
+      if (level3ShiftOn)
+      {
+        fakeKeysym = keymapKeysymToKeycode(XK_ISO_Level3_Shift, masterKeysyms, masterMinKey,
+                                               masterMaxKey, masterMapWidth, &col);
+        XTestFakeKeyEvent(display_, fakeKeysym, 0, 0);
+        sentFakeLevel3ShiftRelease = 1;
+      }
+      if (altROn)
+      {
+        fakeKeysym = keymapKeysymToKeycode(XK_Alt_R, masterKeysyms, masterMinKey,
+                                               masterMaxKey, masterMapWidth, &col);
+        XTestFakeKeyEvent(display_, fakeKeysym, 0, 0);
+        sentFakeAltRRelease = 1;
+      }
+    }
+  }
+
+  else if ((leftShiftOn || rightShiftOn) &&
+               (modeSwitchOn || level3ShiftOn || altROn))
+  {
+    if (pos == 0 || pos == 2)
+    {
+      if (leftShiftOn)
+      {
+        fakeKeysym = keymapKeysymToKeycode(XK_Shift_L, masterKeysyms, masterMinKey,
+                                               masterMaxKey, masterMapWidth, &col);
+        XTestFakeKeyEvent(display_, fakeKeysym, 0, 0);
+        sentFakeLShiftRelease = 1;
+      }
+      if (rightShiftOn)
+      {
+        fakeKeysym = keymapKeysymToKeycode(XK_Shift_R, masterKeysyms, masterMinKey,
+                                               masterMaxKey, masterMapWidth, &col);
+        XTestFakeKeyEvent(display_, fakeKeysym, 0, 0);
+        sentFakeRShiftRelease = 1;
+      }
+    }
+    if (pos == 0 || pos == 1)
+    {
+      if (modeSwitchOn)
+      {
+        fakeKeysym = keymapKeysymToKeycode(XK_Mode_switch, masterKeysyms, masterMinKey,
+                                               masterMaxKey, masterMapWidth, &col);
+        XTestFakeKeyEvent(display_, fakeKeysym, 0, 0);
+        sentFakeModeSwitchRelease = 1;
+      }
+      if (level3ShiftOn)
+      {
+        fakeKeysym = keymapKeysymToKeycode(XK_ISO_Level3_Shift, masterKeysyms, masterMinKey,
+                                               masterMaxKey, masterMapWidth, &col);
+        XTestFakeKeyEvent(display_, fakeKeysym, 0, 0);
+        sentFakeLevel3ShiftRelease = 1;
+      }
+      if (altROn)
+      {
+        fakeKeysym = keymapKeysymToKeycode(XK_Alt_R, masterKeysyms, masterMinKey,
+                                               masterMaxKey, masterMapWidth, &col);
+        XTestFakeKeyEvent(display_, fakeKeysym, 0, 0);
+        sentFakeAltRRelease = 1;
+      }
+    }
+  }
+}
+
+void Poller::cancelFakeModifierEvents()
+{
+  KeySym fakeKeysym;
+  int col;
+
+  if (sentFakeLShiftPress)
+  {
+    logTest("Poller::handleKeyboardEvent", "Fake Shift_L key press event has been sent");
+    logTest("Poller::handleKeyboardEvent", "Sending fake Shift_L key release event");
+
+    fakeKeysym = keymapKeysymToKeycode(XK_Shift_L, masterKeysyms, masterMinKey,
+                                           masterMaxKey, masterMapWidth, &col);
+    XTestFakeKeyEvent(display_, fakeKeysym, 0, 0);
+
+    sentFakeLShiftPress = 0;
+  }
+
+  if (sentFakeLShiftRelease)
+  {
+    logTest("Poller::handleKeyboardEvent", "Fake Shift_L key release event has been sent");
+    logTest("Poller::handleKeyboardEvent", "Sending fake Shift_L key press event");
+
+    fakeKeysym = keymapKeysymToKeycode(XK_Shift_L, masterKeysyms, masterMinKey,
+                                           masterMaxKey, masterMapWidth, &col);
+    XTestFakeKeyEvent(display_, fakeKeysym, 1, 0);
+
+    sentFakeLShiftRelease = 0;
+  }
+
+  if (sentFakeRShiftRelease)
+  {
+    logTest("Poller::handleKeyboardEvent", "Fake Shift_R key release event has been sent");
+    logTest("Poller::handleKeyboardEvent", "Sending fake Shift_R key press event");
+
+    fakeKeysym = keymapKeysymToKeycode(XK_Shift_R, masterKeysyms, masterMinKey,
+                                           masterMaxKey, masterMapWidth, &col);
+    XTestFakeKeyEvent(display_, fakeKeysym, 1, 0);
+
+    sentFakeRShiftRelease = 0;
+  }
+
+  if (sentFakeModeSwitchPress)
+  {
+    logTest("Poller::handleKeyboardEvent", "Fake Mode_switch key press event has been sent");
+    logTest("Poller::handleKeyboardEvent", "Sending fake Mode_switch key release event");
+
+    fakeKeysym = keymapKeysymToKeycode(XK_Mode_switch, masterKeysyms, masterMinKey,
+                                           masterMaxKey, masterMapWidth, &col);
+    XTestFakeKeyEvent(display_, fakeKeysym, 0, 0);
+
+    sentFakeModeSwitchPress = 0;
+  }
+
+  if (sentFakeModeSwitchRelease)
+  {
+    logTest("Poller::handleKeyboardEvent", "Fake Mode_switch key release event has been sent");
+    logTest("Poller::handleKeyboardEvent", "Sending Mode_switch key press event");
+
+    fakeKeysym = keymapKeysymToKeycode(XK_Mode_switch, masterKeysyms, masterMinKey,
+                                           masterMaxKey, masterMapWidth, &col);
+    XTestFakeKeyEvent(display_, fakeKeysym, 1, 0);
+
+    sentFakeModeSwitchRelease = 0;
+  }
+
+  if (sentFakeLevel3ShiftPress)
+  {
+    logTest("Poller::handleKeyboardEvent", "Fake ISO_Level3_Shift key press event has been sent");
+    logTest("Poller::handleKeyboardEvent", "Sending fake ISO_Level3_Shift key release event");
+
+    fakeKeysym = keymapKeysymToKeycode(XK_ISO_Level3_Shift, masterKeysyms, masterMinKey,
+                                           masterMaxKey, masterMapWidth, &col);
+    XTestFakeKeyEvent(display_, fakeKeysym, 0, 0);
+
+    sentFakeLevel3ShiftPress = 0;
+  }
+
+  if (sentFakeLevel3ShiftRelease)
+  {
+    logTest("Poller::handleKeyboardEvent", "Fake ISO_Level3_Shift key release event has been sent");
+    logTest("Poller::handleKeyboardEvent", "Sending fake ISO_Level3_Shift key press event");
+
+    fakeKeysym = keymapKeysymToKeycode(XK_ISO_Level3_Shift, masterKeysyms, masterMinKey,
+                                           masterMaxKey, masterMapWidth, &col);
+    XTestFakeKeyEvent(display_, fakeKeysym, 1, 0);
+
+    sentFakeLevel3ShiftRelease = 0;
+  }
+
+  if (sentFakeAltRRelease)
+  {
+    logTest("Poller::handleKeyboardEvent", "Fake XK_Alt_R key release event has been sent");
+    logTest("Poller::handleKeyboardEvent", "Sending fake XK_Alt_R key press event");
+
+    fakeKeysym = keymapKeysymToKeycode(XK_Alt_R, masterKeysyms, masterMinKey,
+                                           masterMaxKey, masterMapWidth, &col);
+    XTestFakeKeyEvent(display_, fakeKeysym, 1, 0);
+
+    sentFakeAltRRelease = 0;
+  }
+}
+
+Bool Poller::keyIsDown(KeyCode keycode)
+{
+  KeyPressedRec *downKey;
+
+  downKey = shadowKeyPressedPtr;
+
+  while (downKey)
+  {
+    if (downKey -> keyRcvd == keycode)
+    {
+      return True;
+    }
+    downKey = downKey -> next;
+  }
+
+  return False;
+}
+
+void Poller::addKeyPressed(KeyCode received, KeyCode sent)
+{
+  KeyPressedRec *downKey;
+
+  if (!keyIsDown(received))
+  {
+    if (shadowKeyPressedPtr == NULL)
+    {
+      shadowKeyPressedPtr = (KeyPressedRec *) malloc(sizeof(KeyPressedRec));
+
+      shadowKeyPressedPtr -> keyRcvd = received;
+      shadowKeyPressedPtr -> keySent = sent;
+      shadowKeyPressedPtr -> next = NULL;
+    }
+    else
+    {
+      downKey = shadowKeyPressedPtr;
+
+      while (downKey -> next != NULL)
+      {
+        downKey = downKey -> next;
+      }
+
+      downKey -> next = (KeyPressedRec *) malloc(sizeof(KeyPressedRec));
+
+      downKey -> next -> keyRcvd = received;
+      downKey -> next -> keySent = sent;
+      downKey -> next -> next = NULL;
+    }
+  }
+}
+
+KeyCode Poller::getKeyPressed(KeyCode received)
+{
+  KeyCode sent;
+  KeyPressedRec *downKey;
+  KeyPressedRec *tempKey;
+
+  if (shadowKeyPressedPtr != NULL)
+  {
+    if (shadowKeyPressedPtr -> keyRcvd == received)
+    {
+      sent = shadowKeyPressedPtr -> keySent;
+
+      tempKey = shadowKeyPressedPtr;
+      shadowKeyPressedPtr = shadowKeyPressedPtr -> next;
+      free(tempKey);
+
+      return sent;
+    }
+    else
+    {
+      downKey = shadowKeyPressedPtr;
+
+      while (downKey -> next != NULL)
+      {
+        if (downKey -> next -> keyRcvd == received)
+        {
+          sent = downKey -> next -> keySent;
+
+          tempKey = downKey -> next;
+          downKey -> next = downKey -> next -> next;
+          free(tempKey);
+
+          return sent;
+        }
+        else
+        {
+          downKey = downKey -> next;
+        }
+      }
+    }
+  }
+  return 0;
+}
+
+void Poller::handleKeyboardEvent(Display *display, XEvent *event)
+{
+  if (xtestExtension_ == 0 || display_ == 0)
+  {
+    return;
+  }
+
+  logTest("Poller::handleKeyboardEvent", "Handling event at [%p]", event);
+
+#ifdef TRANSLATE_ALWAYS
+
+  KeyCode keycode;
+  KeySym keysym;
+
+  int col = 0;
+
+  Bool isKeyPress = False;
+  Bool isModifier = False;
+  Bool isShiftComb = False;
+  Bool skip = False;
+
+  if (event -> type == KeyPress)
+  {
+    isKeyPress = True;
+  }
+
+  if (shadowKeysyms == NULL)
+  {
+    keymapShadowInit(event -> xkey.display);
+  }
+
+  if (masterKeysyms == NULL)
+  {
+    keymapMasterInit();
+  }
+
+  if (shadowKeysyms == NULL || masterKeysyms == NULL)
+  {
+    logTest("Poller::handleKeyboardEvent", "Unable to initialize keymaps. Do not translate");
+
+    keycode = event -> xkey.keycode;
+
+    goto SendKeycode;
+  }
+
+  keysym = keymapKeycodeToKeysym(event -> xkey.keycode, shadowKeysyms,
+                                   shadowMinKey, shadowMapWidth, 0);
+
+  isModifier = checkModifierKeys(keysym, isKeyPress);
+
+  if (event -> type == KeyRelease)
+  {
+    KeyCode keycodeToSend;
+
+    keycodeToSend = getKeyPressed(event -> xkey.keycode);
+
+    if (keycodeToSend)
+    {
+      keycode = keycodeToSend;
+
+      goto SendKeycode;
+    }
+  }
+
+  /*
+   * Convert case for Solaris keyboard.
+   */
+
+  if (((keysym >> 8) == 0) && (keysym >= XK_A) && (keysym <= XK_Z))
+  {
+    if (!leftShiftOn && !rightShiftOn)
+    {
+      keysym += XK_a - XK_A;
+    }
+    else
+    {
+      skip = True;
+    }
+  }
+
+  if (!isModifier)
+  {
+    if ((leftShiftOn || rightShiftOn) &&
+            (!modeSwitchOn && !level3ShiftOn && !altROn) &&
+                !skip)
+    {
+      KeySym tempKeysym = keymapKeycodeToKeysym(event -> xkey.keycode, shadowKeysyms,
+                                                    shadowMinKey, shadowMapWidth, 1);
+
+      if (tempKeysym == 0)
+      {
+        isShiftComb = True;
+      }
+      else
+      {
+        keysym = tempKeysym;
+      }
+    }
+    else if ((!leftShiftOn && !rightShiftOn) &&
+                 (modeSwitchOn || level3ShiftOn || altROn))
+    {
+      keysym = keymapKeycodeToKeysym(event -> xkey.keycode, shadowKeysyms,
+                                         shadowMinKey, shadowMapWidth, 2);
+    }
+    else if ((leftShiftOn || rightShiftOn) &&
+                 (modeSwitchOn || level3ShiftOn || altROn))
+    {
+      keysym = keymapKeycodeToKeysym(event -> xkey.keycode, shadowKeysyms,
+                                       shadowMinKey, shadowMapWidth, 3);
+    }
+  }
+
+  if (keysym == 0)
+  {
+    logTest("Poller::handleKeyboardEvent", "Null keysym. Return");
+
+    return;
+  }
+
+  logTest("Poller::handleKeyboardEvent", "keysym [%x] [%s]",
+              (unsigned int)keysym, XKeysymToString(keysym));
+
+  if (keysym == XK_Mode_switch)
+  {
+    keysym = XK_ISO_Level3_Shift;
+  }
+
+  keycode = translateKeysymToKeycode(keysym, &col);
+
+  if (keycode == 0)
+  {
+    logTest("Poller::handleKeyboardEvent", "No keycode found for keysym [%x] [%s]. Return",
+                (unsigned int)keysym, XKeysymToString(keysym));
+    return;
+  }
+
+  logTest("Poller::handleKeyboardEvent", "keycode [%d] translated into keycode [%d]",
+              (int)event -> xkey.keycode, (unsigned int)keycode);
+
+  if (event -> type == KeyPress)
+  {
+    addKeyPressed(event -> xkey.keycode, keycode);
+  }
+
+  /*
+   * Send fake modifier events.
+   */
+
+  if (!isModifier && isShiftComb == False)
+  {
+    sendFakeModifierEvents(col, ((keysym >> 8) == 0) && (keysym >= XK_A) && (keysym <= XK_Z));
+  }
+
+SendKeycode:
+
+  /*
+   * Send the event.
+   */
+
+  XTestFakeKeyEvent(display_, keycode, isKeyPress, 0);
+
+  /*
+   * Check if fake modifier events have been sent.
+   */
+
+  cancelFakeModifierEvents();
+
+#else // TRANSLATE_ALWAYS
+
+  //
+  // Use keysyms to translate keycodes across different
+  // keyboard models. Unuseful when both keyboards have
+  // same keycodes (e.g. both are pc keyboards).
+  //
+
+  #ifdef TRANSLATE_KEYCODES
+
+  KeyCode keycode = XKeysymToKeycode(display_, XK_A);
+
+  if (XKeysymToKeycode(event -> xkey.display, XK_A) != keycode)
+  {
+    KeySym keysym = XKeycodeToKeysym(event -> xkey.display, event -> xkey.keycode, 0);
+  
+    if (keysym == XK_Mode_switch || keysym == XK_ISO_Level3_Shift)
+    {
+      logUser("Poller::handleKeyboardEvent: keysym [%x].\n", (unsigned int)keysym);
+  
+      if (XKeycodeToKeysym(display_, 113, 0) == XK_ISO_Level3_Shift ||
+             (XKeycodeToKeysym(display_, 124, 0) == XK_ISO_Level3_Shift))
+      {
+        event -> xkey.keycode = 113;
+      }
+      else
+      {
+        event -> xkey.keycode = XKeysymToKeycode(display_, XK_Mode_switch);
+      }
+  
+      logUser("Poller::handleKeyboardEvent: keycode translated to [%x].\n", (unsigned int)event -> xkey.keycode);
+    }
+    else
+    {
+      event -> xkey.keycode = XKeysymToKeycode(display_, keysym);
+    }
+  }
+
+  #endif // TRANSLATE_KEYCODES
+
+  if (event -> type == KeyPress)
+  {
+    XTestFakeKeyEvent(display_, event -> xkey.keycode, 1, 0);
+  }
+  else if (event -> type == KeyRelease)
+  {
+    XTestFakeKeyEvent(display_, event -> xkey.keycode, 0, 0);
+  }
+
+#endif // TRANSLATE_ALWAYS
+}
+
+void Poller::handleWebKeyboardEvent(KeySym keysym, Bool isKeyPress)
+{
+  KeyCode keycode;
+  int col;
+
+  if (masterKeysyms == NULL)
+  {
+    keymapMasterInit();
+  }
+
+  if (masterKeysyms == NULL)
+  {
+    logTest("Poller::handleWebKeyboardEvent", "Unable to initialize keymap");
+
+    return;
+  }
+
+  keycode = translateKeysymToKeycode(keysym, &col);
+
+  if (keycode == 0)
+  {
+    logTest("Poller::handleKeyboardEvent", "No keycode found for keysym [%x] [%s]. Return",
+                (unsigned int)keysym, XKeysymToString(keysym));
+    return;
+  }
+
+  logTest("Poller::handleKeyboardEvent", "keysym [%x] [%s] translated into keycode [%x]",
+              (unsigned int)keysym, XKeysymToString(keysym), (unsigned int)keycode);
+
+  /*
+   * Send fake modifier events.
+   */
+
+  if (!checkModifierKeys(keysym, isKeyPress))
+  {
+    sendFakeModifierEvents(col, False);
+  }
+
+  /*
+   * Send the event.
+   */
+
+  XTestFakeKeyEvent(display_, keycode, isKeyPress, 0);
+
+  /*
+   * Check if fake modifier events have been sent.
+   */
+
+  cancelFakeModifierEvents();
+
+}
+
+void Poller::handleMouseEvent(Display *display, XEvent *event)
+{
+  if (xtestExtension_ == 0 || display_ == 0)
+  {
+    return;
+  }
+
+  if (event -> type == MotionNotify)
+  {
+    XTestFakeMotionEvent(display_, 0, event -> xmotion.x, event -> xmotion.y, 0);
+  }
+  else if (event -> type == ButtonPress)
+  {
+    XTestFakeButtonEvent(display_, event -> xbutton.button, True, 0);
+  }
+  else if (event -> type == ButtonRelease)
+  {
+    XTestFakeButtonEvent(display_, event -> xbutton.button, False, 0);
+  }
+
+  XFlush(display_);
+}
+
+void Poller::setRootSize(void)
+{
+  width_ = WidthOfScreen(DefaultScreenOfDisplay(display_));
+  height_ = HeightOfScreen(DefaultScreenOfDisplay(display_));
+  depth_ = DefaultDepth(display_, DefaultScreen(display_));
+
+  if (depth_ == 8) bpp_ = 1;
+  else if (depth_ == 16) bpp_ = 2;
+  else bpp_ = 4;
+
+  bpl_ = width_ * bpp_;
+}
+
+void Poller::destroyShmImage(void)
+{
+    XShmDetach(display_, shminfo_);
+    XDestroyImage(image_);
+    image_ = NULL;
+
+    shmdt(shminfo_ -> shmaddr);
+    shmctl(shminfo_ -> shmid, IPC_RMID, 0);
+
+    delete shminfo_;
+    shminfo_ = NULL;
+}
+
+void Poller::xtestInit(void)
+{
+  int eventBase;
+  int errorBase;
+  int versionMajor;
+  int versionMinor;
+  int result;
+
+  xtestExtension_ = 0;
+
+  result = XTestQueryExtension(display_, &eventBase, &errorBase, &versionMajor, &versionMinor);
+
+  if (result == 0)
+  {
+    xtestExtension_ = 0;
+
+    logWarning("Poller::xtestInit", "Failed while querying for XTEST extension.");
+  }
+  else
+  {
+    logDebug("Poller::xtestInit", "XTEST version %d.%d.", versionMajor, versionMinor);
+
+    xtestExtension_ = 1;
+  }
+
+  //
+  // Make this client impervious to grabs.
+  //
+
+  if (xtestExtension_ == 1)
+  {
+    XTestGrabControl(display_, 1);
+  }
+}
+
+void Poller::randrInit(void)
+{
+  int randrEventBase;
+  int randrErrorBase;
+
+  if (XRRQueryExtension(display_, &randrEventBase, &randrErrorBase) == 0)
+  {
+    logWarning("Poller::randrInit", "Randr extension not supported on this "
+                   "display.");
+
+    randrExtension_ = 0;
+
+    return;
+  }
+
+  XRRSelectInput(display_, DefaultRootWindow(display_),
+                     RRScreenChangeNotifyMask);
+
+  randrEventBase_ = randrEventBase;
+
+  randrExtension_ = 1;
+
+  return;
+}
+
+void Poller::damageInit(void)
+{
+  int damageMajorVersion = 0;
+  int damageMinorVersion = 0;
+
+  int damageEventBase = 0;
+  int damageErrorBase = 0;
+
+  if (damageExtension_ >= 0)
+  {
+    logDebug("Poller::damageInit", "Called with damage already initialized.");
+  }
+
+  if (damageExtension_ == 0)
+  {
+    logDebug("Poller::damageInit", "Damage disabled. Skip initialization.");
+
+    return;
+  }
+
+  if (damageExtension_ < 0 && NXShadowOptions.optionDamageExtension == 0)
+  {
+    damageExtension_ = 0;
+
+    logUser("Poller::damageInit: Disabling use of DAMAGE extension.\n");
+
+    return;
+  }
+
+  damageExtension_ = 0;
+
+  mirrorChanges_ = 0;
+
+  if (XDamageQueryExtension(display_, &damageEventBase, &damageErrorBase) == 0)
+  {
+    logUser("Poller::damageInit: DAMAGE not supported.\n");
+
+    return;
+  }
+  #ifdef DEBUG
+  else
+  {
+    fprintf(stderr, "Poller::damageInit: DAMAGE supported. "
+                "Event base [%d] error base [%d].\n", damageEventBase, damageErrorBase);
+  }
+  #endif
+
+  damageEventBase_ = damageEventBase;
+
+  if (XDamageQueryVersion(display_, &damageMajorVersion, &damageMinorVersion) == 0)
+  {
+    logWarning("Poller::damageInit", "Error on querying DAMAGE version.\n");
+
+    damageExtension_ = 0;
+
+    return;
+  }
+  #ifdef DEBUG
+  else
+  {
+    fprintf(stderr, "Poller::damageInit: DAMAGE version %d.%d.\n",
+                damageMajorVersion, damageMinorVersion);
+  }
+  #endif
+
+  damage_ = XDamageCreate(display_, DefaultRootWindow(display_), XDamageReportRawRectangles);
+
+  damageExtension_= 1;
+
+  mirror_ = 1;
+
+  return;
+}
+
+void Poller::getEvents(void)
+{
+  XEvent X;
+
+  if (damageExtension_ == 1)
+  {
+    XDamageSubtract(display_, damage_, None, None);
+  }
+
+  XSync(display_, 0);
+
+  while (XCheckIfEvent(display_, &X, anyEventPredicate, NULL) == 1)
+  {
+    if (randrExtension_ == 1 && (X.type == randrEventBase_ + RRScreenChangeNotify || X.type == ConfigureNotify))
+    {
+      XRRUpdateConfiguration(&X);
+
+      handleRRScreenChangeNotify(&X);
+
+      continue;
+    }
+
+    if (damageExtension_ == 1 && X.type == damageEventBase_ + XDamageNotify)
+    {
+      handleDamageNotify(&X);
+    }
+  }
+
+  if (damageExtension_ == 1)
+  {
+    updateDamagedAreas();
+  }
+
+  XFlush(display_);
+}
+
+void Poller::handleRRScreenChangeNotify(XEvent *X)
+{
+  return;
+}
+
+void Poller::handleDamageNotify(XEvent *X)
+{
+  XDamageNotifyEvent *e = (XDamageNotifyEvent *) X;
+
+  //
+  //  e->drawable is the window ID of the damaged window
+  //  e->geometry is the geometry of the damaged window
+  //  e->area     is the bounding rect for the damaged area
+  //  e->damage   is the damage handle returned by XDamageCreate()
+  //
+
+  #ifdef DEBUG
+  fprintf(stderr, "handleDamageNotify: drawable [%d] damage [%d] geometry [%d][%d][%d][%d] area [%d][%d][%d][%d].\n",
+              (int) e -> drawable, (int) e -> damage, e -> geometry.x, e -> geometry.y,
+                  e -> geometry.width, e -> geometry.height, e -> area.x, e -> area.y,
+                      e -> area.width, e -> area.height);
+  #endif
+
+  XRectangle rectangle = {e -> area.x, e -> area.y, e -> area.width, e -> area.height};
+
+  XUnionRectWithRegion(&rectangle, lastUpdatedRegion_, lastUpdatedRegion_);
+
+  mirrorChanges_ = 1;
+
+  return;
+}
+
+void Poller::updateDamagedAreas(void)
+{
+  BOX *boxPtr;
+
+  XRectangle rectangle;
+
+  int i;
+  int y;
+  
+  for (i = 0; i < lastUpdatedRegion_ -> numRects; i++)
+  {
+    boxPtr = lastUpdatedRegion_ -> rects + i;
+
+    if (shmExtension_ == 1)
+    {
+      image_ -> width  = boxPtr -> x2 - boxPtr -> x1;
+      image_ -> height = boxPtr -> y2 - boxPtr -> y1;
+      image_ -> bytes_per_line =
+          ROUNDUP((image_ -> bits_per_pixel * image_ -> width),
+                      image_ -> bitmap_pad);
+      
+      if (XShmGetImage(display_, DefaultRootWindow(display_), image_,
+                           boxPtr -> x1, boxPtr -> y1, AllPlanes) == 0)
+      {
+        logDebug("Poller::updateDamagedAreas", "XShmGetImage failed!");
+
+        return;
+      }
+    }
+    else if (shmExtension_ == 0)
+    {
+      image_ = XGetImage(display_, DefaultRootWindow(display_), boxPtr -> x1,
+                             boxPtr -> y1, boxPtr -> x2 - boxPtr -> x1,
+                                 boxPtr -> y2 - boxPtr -> y1, AllPlanes,
+                                     ZPixmap);
+
+      if (image_ == NULL)
+      {
+        logDebug("Poller::updateDamagedAreas", "XGetImage failed!");
+
+        return;
+      }
+
+      image_ -> width  = boxPtr -> x2 - boxPtr -> x1;
+      image_ -> height = boxPtr -> y2 - boxPtr -> y1;
+      image_ -> bytes_per_line =
+          ROUNDUP((image_ -> bits_per_pixel * image_ -> width),
+                      image_ -> bitmap_pad);
+    }
+
+    rectangle.height = 1;
+    rectangle.width = image_ -> width;
+    rectangle.x = boxPtr -> x1;
+    rectangle.y = boxPtr -> y1;
+
+    for (y = 0; y < image_ -> height; y++)
+    {
+      update(image_ -> data + y * image_ -> bytes_per_line, rectangle);
+
+      rectangle.y++; 
+    }
+
+    if (shmExtension_ != 1)
+    {
+       XDestroyImage(image_);
+
+      image_ = NULL;
+    }
+  }
+
+  return;
+}
+
+void Poller::getScreenSize(int *w, int *h)
+{
+  *w = WidthOfScreen(DefaultScreenOfDisplay(display_));
+  *h = HeightOfScreen(DefaultScreenOfDisplay(display_));
+}
+
+void Poller::setScreenSize(int *w, int *h)
+{
+  setRootSize();
+
+  shmInitTrap = 1;
+  shmInit();
+  shmInitTrap = 0;
+
+  *w = width_;
+  *h = height_;
+
+  logDebug("Poller::setScreenSize", "New size of screen [%d, %d]", width_, height_);
+}
+
+int anyEventPredicate(Display *display, XEvent *event, XPointer parameter)
+{
+  return 1;
+}
+
+#endif /* !defined(__CYGWIN32__) && !defined(WIN32) */