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lightning-sunbird  0.9+nobinonly
Defines | Functions | Variables
gtk2xtbin.c File Reference
#include "xembed.h"
#include "gtk2xtbin.h"
#include <gtk/gtkmain.h>
#include <gtk/gtkprivate.h>
#include <gdk/gdkx.h>
#include <glib.h>
#include <assert.h>
#include <sys/time.h>
#include <sys/types.h>
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <X11/Xlib.h>
#include <X11/Xutil.h>
#include <X11/Shell.h>
#include <X11/Intrinsic.h>
#include <X11/StringDefs.h>

Go to the source code of this file.

Defines

#define XTBIN_MAX_EVENTS   30

Functions

static void gtk_xtbin_class_init (GtkXtBinClass *klass)
static void gtk_xtbin_init (GtkXtBin *xtbin)
static void gtk_xtbin_realize (GtkWidget *widget)
static void gtk_xtbin_unrealize (GtkWidget *widget)
static void gtk_xtbin_destroy (GtkObject *object)
static void gtk_xtbin_shutdown (GtkObject *object)
static void xt_client_init (XtClient *xtclient, Visual *xtvisual, Colormap xtcolormap, int xtdepth)
static void xt_client_create (XtClient *xtclient, Window embeder, int height, int width)
static void xt_client_unrealize (XtClient *xtclient)
static void xt_client_destroy (XtClient *xtclient)
static void xt_client_set_info (Widget xtplug, unsigned long flags)
static void xt_client_event_handler (Widget w, XtPointer client_data, XEvent *event)
static void xt_client_handle_xembed_message (Widget w, XtPointer client_data, XEvent *event)
static void xt_client_focus_listener (Widget w, XtPointer user_data, XEvent *event)
static void xt_add_focus_listener (Widget w, XtPointer user_data)
static void xt_add_focus_listener_tree (Widget treeroot, XtPointer user_data)
static void xt_remove_focus_listener (Widget w, XtPointer user_data)
static void send_xembed_message (XtClient *xtclient, long message, long detail, long data1, long data2, long time)
static int error_handler (Display *display, XErrorEvent *error)
static void trap_errors (void)
static int untrap_error (void)
static gboolean xt_event_prepare (GSource *source_data, gint *timeout)
static gboolean xt_event_check (GSource *source_data)
static gboolean xt_event_dispatch (GSource *source_data, GSourceFunc call_back, gpointer user_data)
static gboolean xt_event_polling_timer_callback (gpointer user_data)
GtkType gtk_xtbin_get_type (void)
GtkWidget * gtk_xtbin_new (GdkWindow *parent_window, String *f)
void gtk_xtbin_set_position (GtkXtBin *xtbin, gint x, gint y)
void gtk_xtbin_resize (GtkWidget *widget, gint width, gint height)

Variables

static int(* old_error_handler )(Display *, XErrorEvent *)
static int trapped_error_code = 0
static GtkWidgetClass * parent_class = NULL
static Displayxtdisplay = NULL
static Stringfallback = NULL
static gboolean xt_is_initialized = FALSE
static gint num_widgets = 0
static GPollFD xt_event_poll_fd
static gint xt_polling_timer_id = 0
static guint tag = 0
static GSourceFuncs xt_event_funcs

Define Documentation

Definition at line 69 of file gtk2xtbin.c.


Function Documentation

static int error_handler ( Display display,
XErrorEvent *  error 
) [static]
static void gtk_xtbin_class_init ( GtkXtBinClass *  klass) [static]

Definition at line 237 of file gtk2xtbin.c.

{
  GtkWidgetClass *widget_class;
  GtkObjectClass *object_class;

  parent_class = gtk_type_class (GTK_TYPE_SOCKET);

  widget_class = GTK_WIDGET_CLASS (klass);
  widget_class->realize = gtk_xtbin_realize;
  widget_class->unrealize = gtk_xtbin_unrealize;

  object_class = GTK_OBJECT_CLASS (klass);
  object_class->destroy = gtk_xtbin_destroy;
}

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static void gtk_xtbin_destroy ( GtkObject *  object) [static]

Definition at line 456 of file gtk2xtbin.c.

{
  GtkXtBin *xtbin;

#ifdef DEBUG_XTBIN
  printf("gtk_xtbin_destroy()\n");
#endif

  g_return_if_fail (object != NULL);
  g_return_if_fail (GTK_IS_XTBIN (object));

  xtbin = GTK_XTBIN (object);

  if(xtbin->xtwindow) {
    /* remove the event handler */
    xt_client_destroy(&(xtbin->xtclient));
    xtbin->xtwindow = 0;

    num_widgets--; /* reduce our usage count */

    /* If this is the last running widget, remove the Xt display
       connection from the mainloop */
    if (0 == num_widgets) {
#ifdef DEBUG_XTBIN
      printf("removing the Xt connection from the main loop\n");
#endif
      g_main_context_remove_poll((GMainContext*)NULL, &xt_event_poll_fd);
      g_source_remove(tag);

      gtk_timeout_remove(xt_polling_timer_id);
      xt_polling_timer_id = 0;
    }
  }

  GTK_OBJECT_CLASS(parent_class)->destroy(object);
}

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GtkType gtk_xtbin_get_type ( void  )

Definition at line 215 of file gtk2xtbin.c.

{
  static GtkType xtbin_type = 0;

  if (!xtbin_type) {
      static const GtkTypeInfo xtbin_info =
      {
        "GtkXtBin",
        sizeof (GtkXtBin),
        sizeof (GtkXtBinClass),
        (GtkClassInitFunc) gtk_xtbin_class_init,
        (GtkObjectInitFunc) gtk_xtbin_init,
        /* reserved_1 */ NULL,
        /* reserved_2 */ NULL,
        (GtkClassInitFunc) NULL
      };
      xtbin_type = gtk_type_unique (GTK_TYPE_SOCKET, &xtbin_info);
    }
  return xtbin_type;
}

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static void gtk_xtbin_init ( GtkXtBin *  xtbin) [static]

Definition at line 253 of file gtk2xtbin.c.

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GtkWidget* gtk_xtbin_new ( GdkWindow *  parent_window,
String f 
)

Definition at line 309 of file gtk2xtbin.c.

{
  GtkXtBin *xtbin;
  gpointer user_data;

  assert(parent_window != NULL);
  xtbin = gtk_type_new (GTK_TYPE_XTBIN);

  if (!xtbin)
    return (GtkWidget*)NULL;

  if (f)
    fallback = f;

  /* Initialize the Xt toolkit */
  xtbin->parent_window = parent_window;

  xt_client_init(&(xtbin->xtclient), 
      GDK_VISUAL_XVISUAL(gdk_window_get_visual(parent_window )),
      GDK_COLORMAP_XCOLORMAP(gdk_window_get_colormap(parent_window)),
      gdk_window_get_visual(parent_window )->depth);

  if (!xtbin->xtclient.xtdisplay) {
    /* If XtOpenDisplay failed, we can't go any further.
     *  Bail out.
     */
#ifdef DEBUG_XTBIN
    printf("gtk_xtbin_init: XtOpenDisplay() returned NULL.\n");
#endif
    g_free (xtbin);
    return (GtkWidget *)NULL;
  }

  /* If this is the first running widget, hook this display into the
     mainloop */
  if (0 == num_widgets) {
    int           cnumber;
    /*
     * hook Xt event loop into the glib event loop.
     */

    /* the assumption is that gtk_init has already been called */
    GSource* gs = g_source_new(&xt_event_funcs, sizeof(GSource));
      if (!gs) {
       return NULL;
      }
    
    g_source_set_priority(gs, GDK_PRIORITY_EVENTS);
    g_source_set_can_recurse(gs, TRUE);
    tag = g_source_attach(gs, (GMainContext*)NULL);
#ifdef VMS
    cnumber = XConnectionNumber(xtdisplay);
#else
    cnumber = ConnectionNumber(xtdisplay);
#endif
    xt_event_poll_fd.fd = cnumber;
    xt_event_poll_fd.events = G_IO_IN; 
    xt_event_poll_fd.revents = 0;    /* hmm... is this correct? */

    g_main_context_add_poll ((GMainContext*)NULL, 
                             &xt_event_poll_fd, 
                             G_PRIORITY_LOW);
    /* add a timer so that we can poll and process Xt timers */
    xt_polling_timer_id =
      gtk_timeout_add(25,
                      (GtkFunction)xt_event_polling_timer_callback,
                      xtdisplay);
  }

  /* Bump up our usage count */
  num_widgets++;

  /* Build the hierachy */
  xtbin->xtdisplay = xtbin->xtclient.xtdisplay;
  gtk_widget_set_parent_window(GTK_WIDGET(xtbin), parent_window);
  gdk_window_get_user_data(xtbin->parent_window, &user_data);
  if (user_data)
    gtk_container_add(GTK_CONTAINER(user_data), GTK_WIDGET(xtbin));

  return GTK_WIDGET (xtbin);
}

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static void gtk_xtbin_realize ( GtkWidget *  widget) [static]

Definition at line 263 of file gtk2xtbin.c.

{
  GtkXtBin     *xtbin;
  GtkAllocation allocation = { 0, 0, 200, 200 };
  gint  x, y, w, h, d; /* geometry of window */

#ifdef DEBUG_XTBIN
  printf("gtk_xtbin_realize()\n");
#endif

  g_return_if_fail (GTK_IS_XTBIN (widget));

  xtbin = GTK_XTBIN (widget);

  /* caculate the allocation before realize */
  gdk_window_get_geometry(xtbin->parent_window, &x, &y, &w, &h, &d);
  allocation.width = w;
  allocation.height = h;
  gtk_widget_size_allocate (widget, &allocation);

#ifdef DEBUG_XTBIN
  printf("initial allocation %d %d %d %d\n", x, y, w, h);
#endif

  xtbin->width = widget->allocation.width;
  xtbin->height = widget->allocation.height;

  /* use GtkSocket's realize */
  (*GTK_WIDGET_CLASS(parent_class)->realize)(widget);

  /* create the Xt client widget */
  xt_client_create(&(xtbin->xtclient), 
       gtk_socket_get_id(GTK_SOCKET(xtbin)), 
       xtbin->height, 
       xtbin->width);
  xtbin->xtwindow = XtWindow(xtbin->xtclient.child_widget);

  gdk_flush();

  /* now that we have created the xt client, add it to the socket. */
  gtk_socket_add_id(GTK_SOCKET(widget), xtbin->xtwindow);
}

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void gtk_xtbin_resize ( GtkWidget *  widget,
gint  width,
gint  height 
)

Definition at line 404 of file gtk2xtbin.c.

{
  Arg args[2];
  GtkXtBin *xtbin = GTK_XTBIN (widget);
  GtkAllocation allocation;

#ifdef DEBUG_XTBIN
  printf("gtk_xtbin_resize %p %d %d\n", (void *)widget, width, height);
#endif

  XtSetArg(args[0], XtNheight, height);
  XtSetArg(args[1], XtNwidth,  width);
  XtSetValues(xtbin->xtclient.top_widget, args, 2);
  xtbin->height = height;
  xtbin->width  = width;

  /* we need to send a size allocate so the socket knows about the
     size changes */
  allocation.x = xtbin->x;
  allocation.y = xtbin->y;
  allocation.width = xtbin->width;
  allocation.height = xtbin->height;

  gtk_widget_size_allocate(widget, &allocation);
}

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void gtk_xtbin_set_position ( GtkXtBin *  xtbin,
gint  x,
gint  y 
)

Definition at line 392 of file gtk2xtbin.c.

{
  xtbin->x = x;
  xtbin->y = y;

  if (GTK_WIDGET_REALIZED (xtbin))
    gdk_window_move (GTK_WIDGET (xtbin)->window, x, y);
}
static void gtk_xtbin_shutdown ( GtkObject *  object) [static]
static void gtk_xtbin_unrealize ( GtkWidget *  widget) [static]

Definition at line 433 of file gtk2xtbin.c.

{
  GtkXtBin *xtbin;
  GtkWidget *widget;

#ifdef DEBUG_XTBIN
  printf("gtk_xtbin_unrealize()\n");
#endif

  /* gtk_object_destroy() will already hold a refcount on object
   */
  xtbin = GTK_XTBIN(object);
  widget = GTK_WIDGET(object);

  GTK_WIDGET_UNSET_FLAGS (widget, GTK_VISIBLE);
  if (GTK_WIDGET_REALIZED (widget)) {
    xt_client_unrealize(&(xtbin->xtclient));
  }

  (*GTK_WIDGET_CLASS (parent_class)->unrealize)(widget);
}

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static void send_xembed_message ( XtClient *  xtclient,
long  message,
long  detail,
long  data1,
long  data2,
long  time 
) [static]

Definition at line 763 of file gtk2xtbin.c.

{
  XEvent xevent; 
  Window w=XtWindow(xtclient->top_widget);
  Display* dpy=xtclient->xtdisplay;
  int errorcode;

  memset(&xevent,0,sizeof(xevent));
  xevent.xclient.window = w;
  xevent.xclient.type = ClientMessage;
  xevent.xclient.message_type = XInternAtom(dpy,"_XEMBED",False);
  xevent.xclient.format = 32;
  xevent.xclient.data.l[0] = time; 
  xevent.xclient.data.l[1] = message;
  xevent.xclient.data.l[2] = detail; 
  xevent.xclient.data.l[3] = data1;
  xevent.xclient.data.l[4] = data2;

  trap_errors ();
  XSendEvent (dpy, w, False, NoEventMask, &xevent);
  XSync (dpy,False);

  if((errorcode = untrap_error())) {
#ifdef DEBUG_XTBIN
    printf("send_xembed_message error(%d)!!!\n",errorcode);
#endif
  }
}

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static void trap_errors ( void  ) [static]

Definition at line 805 of file gtk2xtbin.c.

{
  trapped_error_code =0;
  old_error_handler = XSetErrorHandler(error_handler);
}

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static int untrap_error ( void  ) [static]

Definition at line 812 of file gtk2xtbin.c.

{
  XSetErrorHandler(old_error_handler);
  if(trapped_error_code) {
#ifdef DEBUG_XTBIN
    printf("Get X Window Error = %d\n", trapped_error_code);
#endif
  }
  return trapped_error_code;
}

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static void xt_add_focus_listener ( Widget  w,
XtPointer  user_data 
) [static]

Definition at line 869 of file gtk2xtbin.c.

{
  XWindowAttributes attr;
  long eventmask;
  XtClient *xtclient = user_data;
  int errorcode;

  trap_errors ();
  XGetWindowAttributes(XtDisplay(w), XtWindow(w), &attr);
  eventmask = attr.your_event_mask | SubstructureNotifyMask | ButtonReleaseMask;
  XSelectInput(XtDisplay(w),
               XtWindow(w), 
               eventmask);

  XtAddEventHandler(w, 
                    SubstructureNotifyMask | ButtonReleaseMask, 
                    TRUE, 
                    (XtEventHandler)xt_client_focus_listener, 
                    xtclient);
  untrap_error();
}

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static void xt_add_focus_listener_tree ( Widget  treeroot,
XtPointer  user_data 
) [static]

Definition at line 904 of file gtk2xtbin.c.

{
  Window win = XtWindow(treeroot);
  Window *children;
  Window root, parent;
  Display *dpy = XtDisplay(treeroot);
  unsigned int i, nchildren;

  /* ensure we don't add more than once */
  xt_remove_focus_listener( treeroot, user_data);
  xt_add_focus_listener( treeroot, user_data);
  trap_errors();
  if(!XQueryTree(dpy, win, &root, &parent, &children, &nchildren)) {
    untrap_error();
    return;
  }

  if(untrap_error()) 
    return;

  for(i=0; i<nchildren; ++i) {
    Widget child = XtWindowToWidget(dpy, children[i]);
    if (child) 
      xt_add_focus_listener_tree( child, user_data);
  }
  XFree((void*)children);

  return;
}

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static void xt_client_create ( XtClient *  xtclient,
Window  embeder,
int  height,
int  width 
) [static]

Definition at line 541 of file gtk2xtbin.c.

{
  int           n;
  Arg           args[6];
  Widget        child_widget;
  Widget        top_widget;

#ifdef DEBUG_XTBIN
  printf("xt_client_create() \n");
#endif
  top_widget = XtAppCreateShell("drawingArea", "Wrapper", 
                                applicationShellWidgetClass, 
                                xtclient->xtdisplay, 
                                NULL, 0);
  xtclient->top_widget = top_widget;

  /* set size of Xt window */
  n = 0;
  XtSetArg(args[n], XtNheight,   height);n++;
  XtSetArg(args[n], XtNwidth,    width);n++;
  XtSetValues(top_widget, args, n);

  child_widget = XtVaCreateWidget("form", 
                                  compositeWidgetClass, 
                                  top_widget, NULL);

  n = 0;
  XtSetArg(args[n], XtNheight,   height);n++;
  XtSetArg(args[n], XtNwidth,    width);n++;
  XtSetArg(args[n], XtNvisual,   xtclient->xtvisual ); n++;
  XtSetArg(args[n], XtNdepth,    xtclient->xtdepth ); n++;
  XtSetArg(args[n], XtNcolormap, xtclient->xtcolormap ); n++;
  XtSetArg(args[n], XtNborderWidth, 0); n++;
  XtSetValues(child_widget, args, n);

  XSync(xtclient->xtdisplay, FALSE);
  xtclient->oldwindow = top_widget->core.window;
  top_widget->core.window = embedderid;

  /* this little trick seems to finish initializing the widget */
#if XlibSpecificationRelease >= 6
  XtRegisterDrawable(xtclient->xtdisplay, 
                     embedderid,
                     top_widget);
#else
  _XtRegisterWindow( embedderid,
                     top_widget);
#endif
  XtRealizeWidget(child_widget);

  /* listen to all Xt events */
  XSelectInput(xtclient->xtdisplay, 
               XtWindow(top_widget), 
               0x0FFFFF);
  xt_client_set_info (child_widget, 0);

  XtManageChild(child_widget);
  xtclient->child_widget = child_widget;

  /* set the event handler */
  XtAddEventHandler(child_widget,
                    0x0FFFFF & ~ResizeRedirectMask,
                    TRUE, 
                    (XtEventHandler)xt_client_event_handler, xtclient);
  XtAddEventHandler(child_widget, 
                    SubstructureNotifyMask | ButtonReleaseMask, 
                    TRUE, 
                    (XtEventHandler)xt_client_focus_listener, 
                    xtclient);
  XSync(xtclient->xtdisplay, FALSE);
}

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static void xt_client_destroy ( XtClient *  xtclient) [static]

Definition at line 636 of file gtk2xtbin.c.

{
  if(xtclient->top_widget) {
    XtRemoveEventHandler(xtclient->child_widget, 0x0FFFFF, TRUE, 
                         (XtEventHandler)xt_client_event_handler, xtclient);
    XtDestroyWidget(xtclient->top_widget);
    xtclient->top_widget = NULL;
  }
}

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static void xt_client_event_handler ( Widget  w,
XtPointer  client_data,
XEvent *  event 
) [static]

Definition at line 724 of file gtk2xtbin.c.

{
  XtClient *xtplug = (XtClient*)client_data;
  
  switch(event->type)
    {
    case ClientMessage:
      /* Handle xembed message */
      if (event->xclient.message_type==
                 XInternAtom (XtDisplay(xtplug->child_widget),
                              "_XEMBED", False)) {
        xt_client_handle_xembed_message(w, client_data, event);
      }
      break;
    case ReparentNotify:
      break;
    case MappingNotify:
      xt_client_set_info (w, XEMBED_MAPPED);
      break;
    case UnmapNotify:
      xt_client_set_info (w, 0);
      break;
    case FocusIn:
      send_xembed_message ( xtplug,
                            XEMBED_REQUEST_FOCUS, 0, 0, 0, 0);
      break;
    case FocusOut:
      break;
    case KeyPress:
#ifdef DEBUG_XTBIN
      printf("Key Press Got!\n");
#endif
      break;
    default:
      break;
    } /* End of switch(event->type) */
}

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static void xt_client_focus_listener ( Widget  w,
XtPointer  user_data,
XEvent *  event 
) [static]

Definition at line 824 of file gtk2xtbin.c.

{
  Display *dpy = XtDisplay(w);
  XtClient *xtclient = user_data;
  Window win = XtWindow(w);

  switch(event->type)
    {
    case CreateNotify:
      if(event->xcreatewindow.parent == win) {
        Widget child=XtWindowToWidget( dpy, event->xcreatewindow.window);
        if (child)
          xt_add_focus_listener_tree(child, user_data);
      }
      break;
    case DestroyNotify:
      xt_remove_focus_listener( w, user_data);
      break;
    case ReparentNotify:
      if(event->xreparent.parent == win) {
        /* I am the new parent */
        Widget child=XtWindowToWidget(dpy, event->xreparent.window);
        if (child)
          xt_add_focus_listener_tree( child, user_data);
      }
      else if(event->xreparent.window == win) {
        /* I am the new child */
      }
      else {
        /* I am the old parent */
      }
      break;
    case ButtonRelease:
#if 0
      XSetInputFocus(dpy, XtWindow(xtclient->child_widget), RevertToParent, event->xbutton.time);
#endif
      send_xembed_message ( xtclient,
                            XEMBED_REQUEST_FOCUS, 0, 0, 0, 0);
      break;
    default:
      break;
    } /* End of switch(event->type) */
}

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static void xt_client_handle_xembed_message ( Widget  w,
XtPointer  client_data,
XEvent *  event 
) [static]

Definition at line 663 of file gtk2xtbin.c.

{
  XtClient *xtplug = (XtClient*)client_data;
  switch (event->xclient.data.l[1])
  {
  case XEMBED_EMBEDDED_NOTIFY:
    break;
  case XEMBED_WINDOW_ACTIVATE:
#ifdef DEBUG_XTBIN
    printf("Xt client get XEMBED_WINDOW_ACTIVATE\n");
#endif
    break;
  case XEMBED_WINDOW_DEACTIVATE:
#ifdef DEBUG_XTBIN
    printf("Xt client get XEMBED_WINDOW_DEACTIVATE\n");
#endif
    break;
  case XEMBED_MODALITY_ON:
#ifdef DEBUG_XTBIN
    printf("Xt client get XEMBED_MODALITY_ON\n");
#endif
    break;
  case XEMBED_MODALITY_OFF:
#ifdef DEBUG_XTBIN
    printf("Xt client get XEMBED_MODALITY_OFF\n");
#endif
    break;
  case XEMBED_FOCUS_IN:
  case XEMBED_FOCUS_OUT:
    {
      XEvent xevent;
      memset(&xevent, 0, sizeof(xevent));

      if(event->xclient.data.l[1] == XEMBED_FOCUS_IN) {
#ifdef DEBUG_XTBIN
        printf("XTEMBED got focus in\n");
#endif
        xevent.xfocus.type = FocusIn;
      }
      else {
#ifdef DEBUG_XTBIN
        printf("XTEMBED got focus out\n");
#endif
        xevent.xfocus.type = FocusOut;
      }

      xevent.xfocus.window = XtWindow(xtplug->child_widget);
      xevent.xfocus.display = XtDisplay(xtplug->child_widget);
      XSendEvent(XtDisplay(xtplug->child_widget), 
                 xevent.xfocus.window,
                 False, NoEventMask,
                 &xevent );
      XSync( XtDisplay(xtplug->child_widget), False);
    }
    break;
  default:
    break;
  } /* End of XEmbed Message */
}

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static void xt_client_init ( XtClient *  xtclient,
Visual *  xtvisual,
Colormap  xtcolormap,
int  xtdepth 
) [static]

Definition at line 499 of file gtk2xtbin.c.

{
  XtAppContext  app_context;
  char         *mArgv[1];
  int           mArgc = 0;

  /*
   * Initialize Xt stuff
   */
  xtclient->top_widget = NULL;
  xtclient->child_widget = NULL;
  xtclient->xtdisplay  = NULL;
  xtclient->xtvisual   = NULL;
  xtclient->xtcolormap = 0;
  xtclient->xtdepth = 0;

  if (!xt_is_initialized) {
#ifdef DEBUG_XTBIN
    printf("starting up Xt stuff\n");
#endif
    XtToolkitInitialize();
    app_context = XtCreateApplicationContext();
    if (fallback)
      XtAppSetFallbackResources(app_context, fallback);

    xtdisplay = XtOpenDisplay(app_context, gdk_get_display(), NULL, 
                            "Wrapper", NULL, 0, &mArgc, mArgv);
    if (xtdisplay)
      xt_is_initialized = TRUE;
  }
  xtclient->xtdisplay  = xtdisplay;
  xtclient->xtvisual   = xtvisual;
  xtclient->xtcolormap = xtcolormap;
  xtclient->xtdepth    = xtdepth;
}

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static void xt_client_set_info ( Widget  xtplug,
unsigned long  flags 
) [static]

Definition at line 647 of file gtk2xtbin.c.

{
  unsigned long buffer[2];

  Atom infoAtom = XInternAtom(XtDisplay(xtplug), "_XEMBED_INFO", False); 

  buffer[1] = 0;                /* Protocol version */
  buffer[1] = flags;

  XChangeProperty (XtDisplay(xtplug), XtWindow(xtplug),
                   infoAtom, infoAtom, 32,
                   PropModeReplace,
                   (unsigned char *)buffer, 2);
}

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static void xt_client_unrealize ( XtClient *  xtclient) [static]

Definition at line 617 of file gtk2xtbin.c.

{
#if XlibSpecificationRelease >= 6
  XtUnregisterDrawable(xtclient->xtdisplay,
                       xtclient->top_widget->core.window);
#else
  _XtUnregisterWindow(xtclient->top_widget->core.window,
                      xtclient->top_widget);
#endif

  /* flush the queue before we returning origin top_widget->core.window
     or we can get X error since the window is gone */
  XSync(xtclient->xtdisplay, False);

  xtclient->top_widget->core.window = xtclient->oldwindow;
  XtUnrealizeWidget(xtclient->top_widget);
}

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static gboolean xt_event_check ( GSource *  source_data) [static]

Definition at line 142 of file gtk2xtbin.c.

{
  GDK_THREADS_ENTER ();

  if (xt_event_poll_fd.revents & G_IO_IN) {
    int mask;
    mask = XPending(xtdisplay);
    GDK_THREADS_LEAVE ();
    return (gboolean)mask;
  }

  GDK_THREADS_LEAVE ();
  return FALSE;
}   
static gboolean xt_event_dispatch ( GSource *  source_data,
GSourceFunc  call_back,
gpointer  user_data 
) [static]

Definition at line 158 of file gtk2xtbin.c.

{
  XEvent event;
  XtAppContext ac;
  int i = 0;

  ac = XtDisplayToApplicationContext(xtdisplay);

  GDK_THREADS_ENTER ();

  /* Process only real X traffic here.  We only look for data on the
   * pipe, limit it to XTBIN_MAX_EVENTS and only call
   * XtAppProcessEvent so that it will look for X events.  There's no
   * timer processing here since we already have a timer callback that
   * does it.  */
  for (i=0; i < XTBIN_MAX_EVENTS && XPending(xtdisplay); i++) {
    XtAppProcessEvent(ac, XtIMXEvent);
  }

  GDK_THREADS_LEAVE ();

  return TRUE;  
}
static gboolean xt_event_polling_timer_callback ( gpointer  user_data) [static]

Definition at line 194 of file gtk2xtbin.c.

{
  Display * display;
  XtAppContext ac;
  int eventsToProcess = 20;

  display = (Display *)user_data;
  ac = XtDisplayToApplicationContext(display);

  /* We need to process many Xt events here. If we just process
     one event we might starve one or more Xt consumers. On the other hand
     this could hang the whole app if Xt events come pouring in. So process
     up to 20 Xt events right now and save the rest for later. This is a hack,
     but it oughta work. We *really* should have out of process plugins.
  */
  while (eventsToProcess-- && XtAppPending(ac))
    XtAppProcessEvent(ac, XtIMAll);
  return TRUE;
}

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static gboolean xt_event_prepare ( GSource *  source_data,
gint *  timeout 
) [static]

Definition at line 129 of file gtk2xtbin.c.

{   
  int mask;

  GDK_THREADS_ENTER();
  mask = XPending(xtdisplay);
  GDK_THREADS_LEAVE();

  return (gboolean)mask;
}
static void xt_remove_focus_listener ( Widget  w,
XtPointer  user_data 
) [static]

Definition at line 892 of file gtk2xtbin.c.

{
  int errorcode;

  trap_errors ();
  XtRemoveEventHandler(w, SubstructureNotifyMask | ButtonReleaseMask, TRUE, 
                      (XtEventHandler)xt_client_focus_listener, user_data);

  untrap_error();
}

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Variable Documentation

String* fallback = NULL [static]

Definition at line 120 of file gtk2xtbin.c.

gint num_widgets = 0 [static]

Definition at line 122 of file gtk2xtbin.c.

int(* old_error_handler)(Display *, XErrorEvent *) [static]

Definition at line 114 of file gtk2xtbin.c.

GtkWidgetClass* parent_class = NULL [static]

Definition at line 117 of file gtk2xtbin.c.

guint tag = 0 [static]

Definition at line 126 of file gtk2xtbin.c.

int trapped_error_code = 0 [static]

Definition at line 115 of file gtk2xtbin.c.

GSourceFuncs xt_event_funcs [static]
Initial value:
 {
  xt_event_prepare,
  xt_event_check,
  xt_event_dispatch,
  g_free,
  (GSourceFunc)NULL,
  (GSourceDummyMarshal)NULL
}

Definition at line 184 of file gtk2xtbin.c.

GPollFD xt_event_poll_fd [static]

Definition at line 124 of file gtk2xtbin.c.

gboolean xt_is_initialized = FALSE [static]

Definition at line 121 of file gtk2xtbin.c.

gint xt_polling_timer_id = 0 [static]

Definition at line 125 of file gtk2xtbin.c.

Display* xtdisplay = NULL [static]

Definition at line 119 of file gtk2xtbin.c.