Migrating to new directory structure adopted from the RealVNC's source tree. More changes will follow.

git-svn-id: svn://svn.code.sf.net/p/tigervnc/code/trunk@590 3789f03b-4d11-0410-bbf8-ca57d06f2519
diff --git a/unix/vncviewer/DesktopWindow.cxx b/unix/vncviewer/DesktopWindow.cxx
new file mode 100644
index 0000000..657572a
--- /dev/null
+++ b/unix/vncviewer/DesktopWindow.cxx
@@ -0,0 +1,571 @@
+/* Copyright (C) 2002-2005 RealVNC Ltd.  All Rights Reserved.
+ * 
+ * This is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ * 
+ * This software is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ * 
+ * You should have received a copy of the GNU General Public License
+ * along with this software; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307,
+ * USA.
+ */
+//
+// DesktopWindow.cxx
+//
+
+#include "DesktopWindow.h"
+#include "CConn.h"
+#include <rfb/CMsgWriter.h>
+#include <rfb/LogWriter.h>
+#include <X11/keysym.h>
+#include <X11/Xatom.h>
+#include <stdio.h>
+#include <string.h>
+#include "parameters.h"
+
+#ifndef XK_ISO_Left_Tab
+#define	XK_ISO_Left_Tab					0xFE20
+#endif
+
+static rdr::U8 reverseBits[] = {
+  0x00, 0x80, 0x40, 0xc0, 0x20, 0xa0, 0x60, 0xe0, 0x10, 0x90, 0x50, 0xd0,
+  0x30, 0xb0, 0x70, 0xf0, 0x08, 0x88, 0x48, 0xc8, 0x28, 0xa8, 0x68, 0xe8,
+  0x18, 0x98, 0x58, 0xd8, 0x38, 0xb8, 0x78, 0xf8, 0x04, 0x84, 0x44, 0xc4,
+  0x24, 0xa4, 0x64, 0xe4, 0x14, 0x94, 0x54, 0xd4, 0x34, 0xb4, 0x74, 0xf4,
+  0x0c, 0x8c, 0x4c, 0xcc, 0x2c, 0xac, 0x6c, 0xec, 0x1c, 0x9c, 0x5c, 0xdc,
+  0x3c, 0xbc, 0x7c, 0xfc, 0x02, 0x82, 0x42, 0xc2, 0x22, 0xa2, 0x62, 0xe2,
+  0x12, 0x92, 0x52, 0xd2, 0x32, 0xb2, 0x72, 0xf2, 0x0a, 0x8a, 0x4a, 0xca,
+  0x2a, 0xaa, 0x6a, 0xea, 0x1a, 0x9a, 0x5a, 0xda, 0x3a, 0xba, 0x7a, 0xfa,
+  0x06, 0x86, 0x46, 0xc6, 0x26, 0xa6, 0x66, 0xe6, 0x16, 0x96, 0x56, 0xd6,
+  0x36, 0xb6, 0x76, 0xf6, 0x0e, 0x8e, 0x4e, 0xce, 0x2e, 0xae, 0x6e, 0xee,
+  0x1e, 0x9e, 0x5e, 0xde, 0x3e, 0xbe, 0x7e, 0xfe, 0x01, 0x81, 0x41, 0xc1,
+  0x21, 0xa1, 0x61, 0xe1, 0x11, 0x91, 0x51, 0xd1, 0x31, 0xb1, 0x71, 0xf1,
+  0x09, 0x89, 0x49, 0xc9, 0x29, 0xa9, 0x69, 0xe9, 0x19, 0x99, 0x59, 0xd9,
+  0x39, 0xb9, 0x79, 0xf9, 0x05, 0x85, 0x45, 0xc5, 0x25, 0xa5, 0x65, 0xe5,
+  0x15, 0x95, 0x55, 0xd5, 0x35, 0xb5, 0x75, 0xf5, 0x0d, 0x8d, 0x4d, 0xcd,
+  0x2d, 0xad, 0x6d, 0xed, 0x1d, 0x9d, 0x5d, 0xdd, 0x3d, 0xbd, 0x7d, 0xfd,
+  0x03, 0x83, 0x43, 0xc3, 0x23, 0xa3, 0x63, 0xe3, 0x13, 0x93, 0x53, 0xd3,
+  0x33, 0xb3, 0x73, 0xf3, 0x0b, 0x8b, 0x4b, 0xcb, 0x2b, 0xab, 0x6b, 0xeb,
+  0x1b, 0x9b, 0x5b, 0xdb, 0x3b, 0xbb, 0x7b, 0xfb, 0x07, 0x87, 0x47, 0xc7,
+  0x27, 0xa7, 0x67, 0xe7, 0x17, 0x97, 0x57, 0xd7, 0x37, 0xb7, 0x77, 0xf7,
+  0x0f, 0x8f, 0x4f, 0xcf, 0x2f, 0xaf, 0x6f, 0xef, 0x1f, 0x9f, 0x5f, 0xdf,
+  0x3f, 0xbf, 0x7f, 0xff
+};
+
+using namespace rfb;
+
+static rfb::LogWriter vlog("DesktopWindow");
+
+DesktopWindow::DesktopWindow(Display* dpy, int w, int h,
+                             const rfb::PixelFormat& serverPF,
+                             CConn* cc_, TXWindow* parent)
+  : TXWindow(dpy, w, h, parent), cc(cc_), im(0),
+    cursorVisible(false), cursorAvailable(false), currentSelectionTime(0),
+    newSelection(0), gettingInitialSelectionTime(true),
+    newServerCutText(false), serverCutText_(0),
+    setColourMapEntriesTimer(this), viewport(0),
+    pointerEventTimer(this),
+    lastButtonMask(0)
+{
+  setEventHandler(this);
+  gc = XCreateGC(dpy, win(), 0, 0);
+  addEventMask(ExposureMask | ButtonPressMask | ButtonReleaseMask |
+               PointerMotionMask | KeyPressMask | KeyReleaseMask |
+               EnterWindowMask | LeaveWindowMask);
+  createXCursors();
+  XDefineCursor(dpy, win(), dotCursor);
+  im = new TXImage(dpy, width(), height());
+  if (!serverPF.trueColour)
+    im->setPF(serverPF);
+  XConvertSelection(dpy, sendPrimary ? XA_PRIMARY : xaCLIPBOARD, xaTIMESTAMP,
+                    xaSELECTION_TIME, win(), CurrentTime);
+  memset(downKeysym, 0, 256*4);
+}
+
+DesktopWindow::~DesktopWindow()
+{
+  XFreeGC(dpy, gc);
+  XFreeCursor(dpy, dotCursor);
+  XFreeCursor(dpy, noCursor);
+  if (localXCursor)
+    XFreeCursor(dpy, localXCursor);
+  delete im;
+}
+
+void DesktopWindow::setViewport(TXViewport* viewport_)
+{
+  viewport = viewport_;
+  viewport->setChild(this);
+}
+
+// Cursor stuff
+
+void DesktopWindow::createXCursors()
+{
+  static char dotSource[] = { 0x00, 0x0e, 0x0e, 0x0e, 0x00 };
+  static char dotMask[]   = { 0x1f, 0x1f, 0x1f, 0x1f, 0x1f };
+  Pixmap source = XCreateBitmapFromData(dpy, win(), dotSource, 5, 5);
+  Pixmap mask = XCreateBitmapFromData(dpy, win(), dotMask, 5, 5);
+  XColor fg, bg;
+  fg.red = fg.green = fg.blue = 0;
+  bg.red = bg.green = bg.blue = 0xffff;
+  dotCursor = XCreatePixmapCursor(dpy, source, mask, &fg, &bg, 2, 2);
+  XFreePixmap(dpy, source);
+  XFreePixmap(dpy, mask);
+  char zero = 0;
+  Pixmap empty = XCreateBitmapFromData(dpy, win(), &zero, 1, 1);
+  noCursor = XCreatePixmapCursor(dpy, empty, empty, &fg, &bg, 0, 0);
+  XFreePixmap(dpy, empty);
+  localXCursor = 0;
+}
+
+void DesktopWindow::setCursor(int width, int height, const Point& hotspot,
+                              void* data, void* mask)
+{
+  if (!useLocalCursor) return;
+
+  hideLocalCursor();
+
+  int mask_len = ((width+7)/8) * height;
+
+  int i;
+  for (i = 0; i < mask_len; i++)
+    if (((rdr::U8*)mask)[i]) break;
+
+  if (i == mask_len) {
+    if (dotWhenNoCursor) {
+      vlog.debug("cursor is empty - using dot");
+      XDefineCursor(dpy, win(), dotCursor);
+    } else {
+      XDefineCursor(dpy, win(), noCursor);
+    }
+    cursorAvailable = false;
+    return;
+  }
+
+  cursor.hotspot = hotspot;
+
+  cursor.setSize(width, height);
+  cursor.setPF(getPF());
+  cursor.imageRect(cursor.getRect(), data);
+
+  cursorBacking.setSize(width, height);
+  cursorBacking.setPF(getPF());
+
+  delete [] cursor.mask.buf;
+  cursor.mask.buf = new rdr::U8[mask_len];
+  memcpy(cursor.mask.buf, mask, mask_len);
+
+  Pixel pix0, pix1;
+  rdr::U8Array bitmap(cursor.getBitmap(&pix0, &pix1));
+  if (bitmap.buf && cursor.getRect().contains(cursor.hotspot)) {
+    int bytesPerRow = (cursor.width() + 7) / 8;
+    for (int j = 0; j < cursor.height(); j++) {
+      for (int i = 0; i < bytesPerRow; i++) {
+        bitmap.buf[j * bytesPerRow + i]
+          = reverseBits[bitmap.buf[j * bytesPerRow + i]];
+        cursor.mask.buf[j * bytesPerRow + i]
+          = reverseBits[cursor.mask.buf[j * bytesPerRow + i]];
+      }
+    }
+    Pixmap source = XCreateBitmapFromData(dpy, win(), (char*)bitmap.buf,
+                                          cursor.width(), cursor.height());
+    Pixmap mask = XCreateBitmapFromData(dpy, win(), (char*)cursor.mask.buf,
+                                        cursor.width(), cursor.height());
+    Colour rgb;
+    XColor fg, bg;
+    getPF().rgbFromPixel(pix1, im->getColourMap(), &rgb);
+    fg.red = rgb.r; fg.green = rgb.g; fg.blue = rgb.b;
+    getPF().rgbFromPixel(pix0, im->getColourMap(), &rgb);
+    bg.red = rgb.r; bg.green = rgb.g; bg.blue = rgb.b;
+    if (localXCursor)
+      XFreeCursor(dpy, localXCursor);
+    localXCursor = XCreatePixmapCursor(dpy, source, mask, &fg, &bg,
+                                       cursor.hotspot.x, cursor.hotspot.y);
+    XDefineCursor(dpy, win(), localXCursor);
+    XFreePixmap(dpy, source);
+    XFreePixmap(dpy, mask);
+    cursorAvailable = false;
+    return;
+  }
+
+  if (!cursorAvailable) {
+    XDefineCursor(dpy, win(), noCursor);
+    cursorAvailable = true;
+  }
+
+  showLocalCursor();
+}
+
+void DesktopWindow::resetLocalCursor()
+{
+  hideLocalCursor();
+  XDefineCursor(dpy, win(), dotCursor);
+  cursorAvailable = false;
+}
+
+void DesktopWindow::hideLocalCursor()
+{
+  // - Blit the cursor backing store over the cursor
+  if (cursorVisible) {
+    cursorVisible = false;
+    im->imageRect(cursorBackingRect, cursorBacking.data);
+    im->put(win(), gc, cursorBackingRect);
+  }
+}
+
+void DesktopWindow::showLocalCursor()
+{
+  if (cursorAvailable && !cursorVisible) {
+    if (!getPF().equal(cursor.getPF()) ||
+        cursor.getRect().is_empty()) {
+      vlog.error("attempting to render invalid local cursor");
+      XDefineCursor(dpy, win(), dotCursor);
+      cursorAvailable = false;
+      return;
+    }
+    cursorVisible = true;
+
+    rfb::Rect cursorRect = (cursor.getRect().translate(cursorPos).
+                            translate(cursor.hotspot.negate()));
+    cursorBackingRect = cursorRect.intersect(im->getRect());
+    im->getImage(cursorBacking.data, cursorBackingRect);
+
+    im->maskRect(cursorRect, cursor.data, cursor.mask.buf);
+    im->put(win(), gc, cursorBackingRect);
+  }
+}
+
+// setColourMapEntries() changes some of the entries in the colourmap.
+// Unfortunately these messages are often sent one at a time, so we delay the
+// settings taking effect by 100ms.  This is because recalculating the internal
+// translation table can be expensive.
+void DesktopWindow::setColourMapEntries(int firstColour, int nColours,
+                                        rdr::U16* rgbs)
+{
+  im->setColourMapEntries(firstColour, nColours, rgbs);
+  if (!setColourMapEntriesTimer.isStarted())
+    setColourMapEntriesTimer.start(100);
+}
+
+void DesktopWindow::serverCutText(const char* str, int len)
+{
+  if (acceptClipboard) {
+    newServerCutText = true;
+    delete [] serverCutText_;
+    serverCutText_ = new char[len+1];
+    memcpy(serverCutText_, str, len);
+    serverCutText_[len] = 0;
+  }
+}
+
+
+// Call XSync() at the end of an update.  We do this because we'd like to
+// ensure that the current update has actually been drawn by the X server
+// before the next update arrives - this is necessary for copyRect to
+// behave correctly.  In particular, if part of the source of a copyRect is
+// not actually displayed in the window, then XCopyArea results in
+// GraphicsExpose events, which require us to draw from the off-screen
+// image.  By the time XSync returns, the GraphicsExpose events will be in
+// Xlib's queue, so hopefully will be processed before the next update.
+// Possibly we should process the GraphicsExpose events here explicitly?
+
+void DesktopWindow::framebufferUpdateEnd()
+{
+  XSync(dpy, False);
+}
+
+
+// invertRect() flips all the bits in every pixel in the given rectangle
+
+void DesktopWindow::invertRect(const Rect& r)
+{
+  int stride;
+  rdr::U8* p = im->getPixelsRW(r, &stride);
+  for (int y = 0; y < r.height(); y++) {
+    for (int x = 0; x < r.width(); x++) {
+      switch (getPF().bpp) {
+      case 8:  ((rdr::U8* )p)[x+y*stride] ^= 0xff;       break;
+      case 16: ((rdr::U16*)p)[x+y*stride] ^= 0xffff;     break;
+      case 32: ((rdr::U32*)p)[x+y*stride] ^= 0xffffffff; break;
+      }
+    }
+  }
+  im->put(win(), gc, r);
+}
+
+
+// resize() - resize the window and the image, taking care to remove the local
+// cursor first.
+void DesktopWindow::resize(int w, int h)
+{
+  hideLocalCursor();
+  TXWindow::resize(w, h);
+  im->resize(w, h);
+}
+
+
+bool DesktopWindow::handleTimeout(rfb::Timer* timer)
+{
+  if (timer == &setColourMapEntriesTimer) {
+    im->updateColourMap();
+    im->put(win(), gc, im->getRect());
+  } else if (timer == &pointerEventTimer) {
+    if (!viewOnly) {
+      cc->writer()->pointerEvent(lastPointerPos, lastButtonMask);
+    }
+  }
+  return false;
+}
+
+
+void DesktopWindow::handlePointerEvent(const Point& pos, int buttonMask)
+{
+  if (!viewOnly) {
+    if (pointerEventInterval == 0 || buttonMask != lastButtonMask) {
+      cc->writer()->pointerEvent(pos, buttonMask);
+    } else {
+      if (!pointerEventTimer.isStarted())
+        pointerEventTimer.start(pointerEventInterval);
+    }
+    lastPointerPos = pos;
+    lastButtonMask = buttonMask;
+  }
+  // - If local cursor rendering is enabled then use it
+  if (cursorAvailable) {
+    // - Render the cursor!
+    if (!pos.equals(cursorPos)) {
+      hideLocalCursor();
+      if (im->getRect().contains(pos)) {
+        cursorPos = pos;
+        showLocalCursor();
+      }
+    }
+  }
+}
+
+
+// handleXEvent() handles the various X events on the window
+void DesktopWindow::handleEvent(TXWindow* w, XEvent* ev)
+{
+  switch (ev->type) {
+  case GraphicsExpose:
+  case Expose:
+    im->put(win(), gc, Rect(ev->xexpose.x, ev->xexpose.y,
+                            ev->xexpose.x + ev->xexpose.width,
+                            ev->xexpose.y + ev->xexpose.height));
+    break;
+
+  case MotionNotify:
+    while (XCheckTypedWindowEvent(dpy, win(), MotionNotify, ev));
+    if (viewport && viewport->bumpScrollEvent(&ev->xmotion)) break;
+    handlePointerEvent(Point(ev->xmotion.x, ev->xmotion.y),
+                       (ev->xmotion.state & 0x1f00) >> 8);
+    break;
+
+  case ButtonPress:
+    handlePointerEvent(Point(ev->xbutton.x, ev->xbutton.y),
+                       (((ev->xbutton.state & 0x1f00) >> 8) |
+                        (1 << (ev->xbutton.button-1))));
+    break;
+
+  case ButtonRelease:
+    handlePointerEvent(Point(ev->xbutton.x, ev->xbutton.y),
+                       (((ev->xbutton.state & 0x1f00) >> 8) &
+                        ~(1 << (ev->xbutton.button-1))));
+    break;
+
+  case KeyPress:
+    if (!viewOnly) {
+      KeySym ks;
+      char keyname[256];
+      XLookupString(&ev->xkey, keyname, 256, &ks, NULL);
+      bool fakeShiftPress = false;
+
+      // Turn ISO_Left_Tab into shifted Tab
+      if (ks == XK_ISO_Left_Tab) {
+        fakeShiftPress = !(ev->xkey.state & ShiftMask);
+        ks = XK_Tab;
+      }
+
+      if (fakeShiftPress)
+        cc->writer()->keyEvent(XK_Shift_L, true);
+
+      downKeysym[ev->xkey.keycode] = ks;
+      cc->writer()->keyEvent(ks, true);
+
+      if (fakeShiftPress)
+        cc->writer()->keyEvent(XK_Shift_L, false);
+      break;
+    }
+
+  case KeyRelease:
+    if (!viewOnly) {
+      if (downKeysym[ev->xkey.keycode]) {
+        cc->writer()->keyEvent(downKeysym[ev->xkey.keycode], false);
+        downKeysym[ev->xkey.keycode] = 0;
+      }
+    }
+    break;
+
+  case EnterNotify:
+    newSelection = 0;
+    if (sendPrimary && !selectionOwner(XA_PRIMARY)) {
+      XConvertSelection(dpy, XA_PRIMARY, xaTIMESTAMP, xaSELECTION_TIME,
+                        win(), ev->xcrossing.time);
+    } else if (!selectionOwner(xaCLIPBOARD)) {
+      XConvertSelection(dpy, xaCLIPBOARD, xaTIMESTAMP, xaSELECTION_TIME,
+                        win(), ev->xcrossing.time);
+    }
+    break;
+
+  case LeaveNotify:
+    if (serverCutText_ && newServerCutText) {
+      newServerCutText = false;
+      vlog.debug("acquiring primary and clipboard selections");
+      XStoreBytes(dpy, serverCutText_, strlen(serverCutText_));
+      ownSelection(XA_PRIMARY, ev->xcrossing.time);
+      ownSelection(xaCLIPBOARD, ev->xcrossing.time);
+      currentSelectionTime = ev->xcrossing.time;
+    }
+    // Release all keys - this should probably done on a FocusOut event, but
+    // LeaveNotify is near enough...
+    for (int i = 8; i < 256; i++) {
+      if (downKeysym[i]) {
+        cc->writer()->keyEvent(downKeysym[i], false);
+        downKeysym[i] = 0;
+      }
+    }
+    break;
+  }
+}
+
+// selectionRequest() is called when we are the selection owner and another X
+// client has requested the selection.  We simply put the server's cut text
+// into the requested property.  TXWindow will handle the rest.
+bool DesktopWindow::selectionRequest(Window requestor,
+                                     Atom selection, Atom property)
+{
+  XChangeProperty(dpy, requestor, property, XA_STRING, 8,
+                  PropModeReplace, (unsigned char*)serverCutText_,
+                  strlen(serverCutText_));
+  return true;
+}
+
+
+// selectionNotify() is called when we have requested any information about a
+// selection from the selection owner.  Note that there are two selections,
+// PRIMARY and CLIPBOARD, plus the cut buffer, and we try to use whichever is
+// the most recent of the three.
+//
+// There are two different "targets" for which selectionNotify() is called, the
+// timestamp and the actual string value of the selection.  We always use the
+// timestamp to decide which selection to retrieve.
+//
+// The first time selectionNotify() is called is when we are trying to find the
+// timestamp of the selections at initialisation.  This should be called first
+// for PRIMARY, then we call XConvertSelection() for CLIPBOARD.  The second
+// time should be the result for CLIPBOARD.  At this stage we've got the
+// "currentSelectionTime" so we return.
+//
+// Subsequently selectionNotify() is called whenever the mouse enters the
+// viewer window.  Again, the first time it is called should be the timestamp
+// for PRIMARY, and we then request the timestamp for CLIPBOARD.  When
+// selectionNotify() is called again with the timestamp for CLIPBOARD, we now
+// know if either selection is "new" i.e. later than the previous value of
+// currentSelectionTime.  The last thing to check is the timestamp on the cut
+// buffer.  If the cut buffer is newest we send that to the server, otherwise
+// if one of the selections was newer, we request the string value of that
+// selection.
+//
+// Finally, if we get selectionNotify() called for the string value of a
+// selection, we sent that to the server.
+//
+// As a final minor complication, when one of the selections is actually owned
+// by us, we don't request the details for it.
+
+// TIME_LATER treats 0 as meaning a long time ago, so a==0 means a cannot be
+// later than b.  This is different to the usual meaning of CurrentTime.
+#define TIME_LATER(a, b) ((a) != 0 && ((b) == 0 || (long)((a) - (b)) > 0))
+
+
+void DesktopWindow::selectionNotify(XSelectionEvent* ev, Atom type, int format,
+                                    int nitems, void* data)
+{
+  if (ev->requestor != win())
+    return;
+
+  if (ev->target == xaTIMESTAMP) {
+    if (ev->property == xaSELECTION_TIME) {
+      if (data && format == 32 && nitems == 1) {
+        Time t = *(rdr::U32 *)data;
+        vlog.debug("selection (%d) time is %d, later %d",
+                   ev->selection, t, TIME_LATER(t, currentSelectionTime));
+        if (TIME_LATER(t, currentSelectionTime)) {
+          currentSelectionTime = t;
+          newSelection = ev->selection;
+        }
+      }
+    } else {
+      vlog.debug("no selection (%d)",ev->selection);
+    }
+
+    if (ev->selection == XA_PRIMARY) {
+      if (!selectionOwner(xaCLIPBOARD)) {
+        XConvertSelection(dpy, xaCLIPBOARD, xaTIMESTAMP, xaSELECTION_TIME,
+                          win(), ev->time);
+        return;
+      }
+    } else if (ev->selection != xaCLIPBOARD) {
+      vlog.error("unknown selection %d",ev->selection);
+      return;
+    }
+
+    if (gettingInitialSelectionTime) {
+      gettingInitialSelectionTime = false;
+      return;
+    }
+
+    if (!sendClipboard) return;
+    if (sendPrimary) {
+      vlog.debug("cut buffer time is %d, later %d", cutBufferTime,
+                 TIME_LATER(cutBufferTime, currentSelectionTime));
+      if (TIME_LATER(cutBufferTime, currentSelectionTime)) {
+        currentSelectionTime = cutBufferTime;
+        int len;
+        char* str = XFetchBytes(dpy, &len);
+        if (str) {
+          if (!viewOnly) {
+            vlog.debug("sending cut buffer to server");
+            cc->writer()->clientCutText(str, len);
+          }
+          XFree(str);
+          return;
+        }
+      }
+    }
+    if (newSelection) {
+      XConvertSelection(dpy, newSelection, XA_STRING, xaSELECTION_STRING,
+                        win(), CurrentTime);
+    }
+
+  } else if (ev->target == XA_STRING) {
+    if (!sendClipboard) return;
+    if (ev->property == xaSELECTION_STRING) {
+      if (data && format == 8) {
+        if (!viewOnly) {
+          vlog.debug("sending %s selection to server",
+                     ev->selection == XA_PRIMARY ? "primary" :
+                     ev->selection == xaCLIPBOARD ? "clipboard" : "unknown" );
+          cc->writer()->clientCutText((char*)data, nitems);
+        }
+      }
+    }
+  }
+}