mirror of
https://github.com/classilla/tenfourfox.git
synced 2024-09-09 20:54:40 +00:00
863 lines
23 KiB
C
863 lines
23 KiB
C
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
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* vim: set expandtab shiftwidth=2 tabstop=2: */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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/*
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* The GtkXtBin widget allows for Xt toolkit code to be used
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* inside a GTK application.
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*/
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#include "xembed.h"
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#include "gtk2xtbin.h"
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#include <gtk/gtk.h>
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#include <gdk/gdkx.h>
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#include <glib.h>
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#include <assert.h>
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#include <sys/time.h>
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#include <sys/types.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <unistd.h>
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/* Xlib/Xt stuff */
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#include <X11/Xlib.h>
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#include <X11/Xutil.h>
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#include <X11/Shell.h>
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#include <X11/Intrinsic.h>
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#include <X11/StringDefs.h>
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/* uncomment this if you want debugging information about widget
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creation and destruction */
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#undef DEBUG_XTBIN
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#define XTBIN_MAX_EVENTS 30
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static void gtk_xtbin_class_init (GtkXtBinClass *klass);
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static void gtk_xtbin_init (GtkXtBin *xtbin);
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static void gtk_xtbin_realize (GtkWidget *widget);
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static void gtk_xtbin_unrealize (GtkWidget *widget);
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static void gtk_xtbin_destroy (GtkObject *object);
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static void gtk_xtbin_shutdown (GtkObject *object);
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/* Xt aware XEmbed */
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static void xt_client_handle_xembed_message (Widget w,
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XtPointer client_data,
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XEvent *event);
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static void xt_add_focus_listener( Widget w, XtPointer user_data );
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static void xt_add_focus_listener_tree ( Widget treeroot, XtPointer user_data);
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static void xt_remove_focus_listener(Widget w, XtPointer user_data);
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static void xt_client_event_handler (Widget w, XtPointer client_data, XEvent *event);
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static void xt_client_focus_listener (Widget w, XtPointer user_data, XEvent *event);
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static void xt_client_set_info (Widget xtplug, unsigned long flags);
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static void send_xembed_message (XtClient *xtclient,
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long message,
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long detail,
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long data1,
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long data2,
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long time);
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static int error_handler (Display *display,
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XErrorEvent *error);
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/* For error trap of XEmbed */
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static void trap_errors(void);
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static int untrap_error(void);
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static int (*old_error_handler) (Display *, XErrorEvent *);
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static int trapped_error_code = 0;
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static GtkWidgetClass *parent_class = NULL;
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static Display *xtdisplay = NULL;
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static String *fallback = NULL;
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static gboolean xt_is_initialized = FALSE;
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static gint num_widgets = 0;
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static GPollFD xt_event_poll_fd;
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static gint xt_polling_timer_id = 0;
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static guint tag = 0;
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static gboolean
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xt_event_prepare (GSource* source_data,
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gint *timeout)
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{
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int mask;
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mask = XPending(xtdisplay);
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return (gboolean)mask;
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}
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static gboolean
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xt_event_check (GSource* source_data)
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{
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if (xt_event_poll_fd.revents & G_IO_IN) {
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int mask;
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mask = XPending(xtdisplay);
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return (gboolean)mask;
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}
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return FALSE;
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}
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static gboolean
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xt_event_dispatch (GSource* source_data,
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GSourceFunc call_back,
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gpointer user_data)
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{
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XEvent event;
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XtAppContext ac;
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int i = 0;
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ac = XtDisplayToApplicationContext(xtdisplay);
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/* Process only real X traffic here. We only look for data on the
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* pipe, limit it to XTBIN_MAX_EVENTS and only call
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* XtAppProcessEvent so that it will look for X events. There's no
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* timer processing here since we already have a timer callback that
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* does it. */
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for (i=0; i < XTBIN_MAX_EVENTS && XPending(xtdisplay); i++) {
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XtAppProcessEvent(ac, XtIMXEvent);
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}
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return TRUE;
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}
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static GSourceFuncs xt_event_funcs = {
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xt_event_prepare,
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xt_event_check,
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xt_event_dispatch,
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NULL,
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(GSourceFunc)NULL,
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(GSourceDummyMarshal)NULL
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};
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static gboolean
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xt_event_polling_timer_callback(gpointer user_data)
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{
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Display * display;
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XtAppContext ac;
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int eventsToProcess = 20;
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display = (Display *)user_data;
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ac = XtDisplayToApplicationContext(display);
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/* We need to process many Xt events here. If we just process
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one event we might starve one or more Xt consumers. On the other hand
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this could hang the whole app if Xt events come pouring in. So process
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up to 20 Xt events right now and save the rest for later. This is a hack,
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but it oughta work. We *really* should have out of process plugins.
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*/
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while (eventsToProcess-- && XtAppPending(ac))
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XtAppProcessEvent(ac, XtIMAll);
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return TRUE;
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}
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GType
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gtk_xtbin_get_type (void)
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{
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static GType xtbin_type = 0;
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if (!xtbin_type) {
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static const GTypeInfo xtbin_info =
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{
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sizeof (GtkXtBinClass), /* class_size */
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NULL, /* base_init */
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NULL, /* base_finalize */
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(GClassInitFunc) gtk_xtbin_class_init, /* class_init */
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NULL, /* class_finalize */
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NULL, /* class_data */
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sizeof (GtkXtBin), /* instance_size */
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0, /* n_preallocs */
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(GInstanceInitFunc) gtk_xtbin_init, /* instance_init */
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NULL /* value_table */
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};
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xtbin_type = g_type_register_static(GTK_TYPE_SOCKET, "GtkXtBin",
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&xtbin_info, 0);
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}
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return xtbin_type;
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}
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static void
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gtk_xtbin_class_init (GtkXtBinClass *klass)
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{
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GtkWidgetClass *widget_class;
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GtkObjectClass *object_class;
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parent_class = g_type_class_peek_parent(klass);
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widget_class = GTK_WIDGET_CLASS (klass);
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widget_class->realize = gtk_xtbin_realize;
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widget_class->unrealize = gtk_xtbin_unrealize;
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object_class = GTK_OBJECT_CLASS (klass);
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object_class->destroy = gtk_xtbin_destroy;
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}
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static void
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gtk_xtbin_init (GtkXtBin *xtbin)
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{
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xtbin->xtdisplay = NULL;
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xtbin->parent_window = NULL;
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xtbin->xtwindow = 0;
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}
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static void
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gtk_xtbin_realize (GtkWidget *widget)
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{
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GtkXtBin *xtbin;
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GtkAllocation allocation = { 0, 0, 200, 200 };
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gint x, y, w, h, d; /* geometry of window */
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#ifdef DEBUG_XTBIN
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printf("gtk_xtbin_realize()\n");
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#endif
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g_return_if_fail (GTK_IS_XTBIN (widget));
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xtbin = GTK_XTBIN (widget);
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/* caculate the allocation before realize */
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gdk_window_get_geometry(xtbin->parent_window, &x, &y, &w, &h, &d);
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allocation.width = w;
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allocation.height = h;
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gtk_widget_size_allocate (widget, &allocation);
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#ifdef DEBUG_XTBIN
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printf("initial allocation %d %d %d %d\n", x, y, w, h);
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#endif
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/* use GtkSocket's realize */
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(*GTK_WIDGET_CLASS(parent_class)->realize)(widget);
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/* create the Xt client widget */
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xt_client_create(&(xtbin->xtclient),
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gtk_socket_get_id(GTK_SOCKET(xtbin)),
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h, w);
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xtbin->xtwindow = XtWindow(xtbin->xtclient.child_widget);
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gdk_flush();
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/* now that we have created the xt client, add it to the socket. */
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gtk_socket_add_id(GTK_SOCKET(widget), xtbin->xtwindow);
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}
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GtkWidget*
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gtk_xtbin_new (GdkWindow *parent_window, String * f)
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{
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GtkXtBin *xtbin;
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gpointer user_data;
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assert(parent_window != NULL);
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xtbin = g_object_new (GTK_TYPE_XTBIN, NULL);
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if (!xtbin)
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return (GtkWidget*)NULL;
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if (f)
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fallback = f;
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/* Initialize the Xt toolkit */
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xtbin->parent_window = parent_window;
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xt_client_init(&(xtbin->xtclient),
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GDK_VISUAL_XVISUAL(gdk_rgb_get_visual()),
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GDK_COLORMAP_XCOLORMAP(gdk_rgb_get_colormap()),
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gdk_rgb_get_visual()->depth);
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if (!xtbin->xtclient.xtdisplay) {
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/* If XtOpenDisplay failed, we can't go any further.
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* Bail out.
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*/
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#ifdef DEBUG_XTBIN
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printf("gtk_xtbin_init: XtOpenDisplay() returned NULL.\n");
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#endif
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g_free (xtbin);
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return (GtkWidget *)NULL;
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}
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/* Launch X event loop */
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xt_client_xloop_create();
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/* Build the hierachy */
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xtbin->xtdisplay = xtbin->xtclient.xtdisplay;
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gtk_widget_set_parent_window(GTK_WIDGET(xtbin), parent_window);
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gdk_window_get_user_data(xtbin->parent_window, &user_data);
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if (user_data)
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gtk_container_add(GTK_CONTAINER(user_data), GTK_WIDGET(xtbin));
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/* This GtkSocket has a visible window, but the Xt plug will cover this
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* window. Normally GtkSockets let the X server paint their background and
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* this would happen immediately (before the plug is mapped). Setting the
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* background to None prevents the server from painting this window,
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* avoiding flicker.
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*/
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gtk_widget_realize(GTK_WIDGET(xtbin));
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gdk_window_set_back_pixmap(GTK_WIDGET(xtbin)->window, NULL, FALSE);
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return GTK_WIDGET (xtbin);
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}
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static void
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gtk_xtbin_unrealize (GtkWidget *object)
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{
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GtkXtBin *xtbin;
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GtkWidget *widget;
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#ifdef DEBUG_XTBIN
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printf("gtk_xtbin_unrealize()\n");
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#endif
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/* gtk_object_destroy() will already hold a refcount on object
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*/
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xtbin = GTK_XTBIN(object);
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widget = GTK_WIDGET(object);
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GTK_WIDGET_UNSET_FLAGS (widget, GTK_VISIBLE);
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if (GTK_WIDGET_REALIZED (widget)) {
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xt_client_unrealize(&(xtbin->xtclient));
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}
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(*GTK_WIDGET_CLASS (parent_class)->unrealize)(widget);
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}
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static void
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gtk_xtbin_destroy (GtkObject *object)
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{
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GtkXtBin *xtbin;
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#ifdef DEBUG_XTBIN
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printf("gtk_xtbin_destroy()\n");
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#endif
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g_return_if_fail (object != NULL);
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g_return_if_fail (GTK_IS_XTBIN (object));
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xtbin = GTK_XTBIN (object);
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if(xtbin->xtwindow) {
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/* remove the event handler */
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xt_client_destroy(&(xtbin->xtclient));
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xtbin->xtwindow = 0;
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/* stop X event loop */
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xt_client_xloop_destroy();
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}
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GTK_OBJECT_CLASS(parent_class)->destroy(object);
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}
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/*
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* Following is the implementation of Xt XEmbedded for client side
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*/
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/* Initial Xt plugin */
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void
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xt_client_init( XtClient * xtclient,
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Visual *xtvisual,
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Colormap xtcolormap,
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int xtdepth)
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{
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XtAppContext app_context;
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char *mArgv[1];
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int mArgc = 0;
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/*
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* Initialize Xt stuff
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*/
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xtclient->top_widget = NULL;
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xtclient->child_widget = NULL;
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xtclient->xtdisplay = NULL;
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xtclient->xtvisual = NULL;
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xtclient->xtcolormap = 0;
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xtclient->xtdepth = 0;
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if (!xt_is_initialized) {
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#ifdef DEBUG_XTBIN
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printf("starting up Xt stuff\n");
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#endif
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XtToolkitInitialize();
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app_context = XtCreateApplicationContext();
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if (fallback)
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XtAppSetFallbackResources(app_context, fallback);
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xtdisplay = XtOpenDisplay(app_context, gdk_get_display(), NULL,
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"Wrapper", NULL, 0, &mArgc, mArgv);
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if (xtdisplay)
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xt_is_initialized = TRUE;
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}
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xtclient->xtdisplay = xtdisplay;
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xtclient->xtvisual = xtvisual;
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xtclient->xtcolormap = xtcolormap;
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xtclient->xtdepth = xtdepth;
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}
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void
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xt_client_xloop_create(void)
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{
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/* If this is the first running widget, hook this display into the
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mainloop */
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if (0 == num_widgets) {
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int cnumber;
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GSource* gs;
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/* Set up xtdisplay in case we're missing one */
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if (!xtdisplay) {
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(void)xt_client_get_display();
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}
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/*
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* hook Xt event loop into the glib event loop.
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*/
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/* the assumption is that gtk_init has already been called */
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gs = g_source_new(&xt_event_funcs, sizeof(GSource));
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if (!gs) {
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return;
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}
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g_source_set_priority(gs, GDK_PRIORITY_EVENTS);
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g_source_set_can_recurse(gs, TRUE);
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tag = g_source_attach(gs, (GMainContext*)NULL);
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g_source_unref(gs);
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#ifdef VMS
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cnumber = XConnectionNumber(xtdisplay);
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#else
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cnumber = ConnectionNumber(xtdisplay);
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#endif
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xt_event_poll_fd.fd = cnumber;
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xt_event_poll_fd.events = G_IO_IN;
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xt_event_poll_fd.revents = 0; /* hmm... is this correct? */
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g_main_context_add_poll ((GMainContext*)NULL,
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&xt_event_poll_fd,
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G_PRIORITY_LOW);
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/* add a timer so that we can poll and process Xt timers */
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xt_polling_timer_id =
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g_timeout_add(25,
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(GtkFunction)xt_event_polling_timer_callback,
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xtdisplay);
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}
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/* Bump up our usage count */
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num_widgets++;
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}
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void
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xt_client_xloop_destroy(void)
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{
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num_widgets--; /* reduce our usage count */
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/* If this is the last running widget, remove the Xt display
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connection from the mainloop */
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if (0 == num_widgets) {
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#ifdef DEBUG_XTBIN
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printf("removing the Xt connection from the main loop\n");
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#endif
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g_main_context_remove_poll((GMainContext*)NULL, &xt_event_poll_fd);
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g_source_remove(tag);
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g_source_remove(xt_polling_timer_id);
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xt_polling_timer_id = 0;
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}
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}
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/* Get Xt Client display */
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Display *
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xt_client_get_display(void)
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{
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if (!xtdisplay) {
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XtClient tmp;
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xt_client_init(&tmp,NULL,0,0);
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}
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return xtdisplay;
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}
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/* Create the Xt client widgets
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* */
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void
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xt_client_create ( XtClient* xtclient ,
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Window embedderid,
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int height,
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int width )
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{
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int n;
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Arg args[6];
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Widget child_widget;
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Widget top_widget;
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#ifdef DEBUG_XTBIN
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printf("xt_client_create() \n");
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#endif
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top_widget = XtAppCreateShell("drawingArea", "Wrapper",
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applicationShellWidgetClass,
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xtclient->xtdisplay,
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NULL, 0);
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xtclient->top_widget = top_widget;
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/* set size of Xt window */
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n = 0;
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XtSetArg(args[n], XtNheight, height);n++;
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XtSetArg(args[n], XtNwidth, width);n++;
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XtSetValues(top_widget, args, n);
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child_widget = XtVaCreateWidget("form",
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compositeWidgetClass,
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top_widget, NULL);
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n = 0;
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XtSetArg(args[n], XtNheight, height);n++;
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XtSetArg(args[n], XtNwidth, width);n++;
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XtSetArg(args[n], XtNvisual, xtclient->xtvisual ); n++;
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XtSetArg(args[n], XtNdepth, xtclient->xtdepth ); n++;
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XtSetArg(args[n], XtNcolormap, xtclient->xtcolormap ); n++;
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XtSetArg(args[n], XtNborderWidth, 0); n++;
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XtSetValues(child_widget, args, n);
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XSync(xtclient->xtdisplay, FALSE);
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xtclient->oldwindow = top_widget->core.window;
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top_widget->core.window = embedderid;
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/* this little trick seems to finish initializing the widget */
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#if XlibSpecificationRelease >= 6
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|
XtRegisterDrawable(xtclient->xtdisplay,
|
|
embedderid,
|
|
top_widget);
|
|
#else
|
|
_XtRegisterWindow( embedderid,
|
|
top_widget);
|
|
#endif
|
|
XtRealizeWidget(child_widget);
|
|
|
|
/* listen to all Xt events */
|
|
XSelectInput(xtclient->xtdisplay,
|
|
embedderid,
|
|
XtBuildEventMask(top_widget));
|
|
xt_client_set_info (child_widget, 0);
|
|
|
|
XtManageChild(child_widget);
|
|
xtclient->child_widget = child_widget;
|
|
|
|
/* set the event handler */
|
|
XtAddEventHandler(child_widget,
|
|
StructureNotifyMask | KeyPressMask,
|
|
TRUE,
|
|
(XtEventHandler)xt_client_event_handler, xtclient);
|
|
XtAddEventHandler(child_widget,
|
|
SubstructureNotifyMask | ButtonReleaseMask,
|
|
FALSE,
|
|
(XtEventHandler)xt_client_focus_listener,
|
|
xtclient);
|
|
XSync(xtclient->xtdisplay, FALSE);
|
|
}
|
|
|
|
void
|
|
xt_client_unrealize ( XtClient* xtclient )
|
|
{
|
|
/* Explicitly destroy the child_widget window because this is actually a
|
|
child of the socket window. It is not a child of top_widget's window
|
|
when that is destroyed. */
|
|
XtUnrealizeWidget(xtclient->child_widget);
|
|
|
|
#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);
|
|
}
|
|
|
|
void
|
|
xt_client_destroy (XtClient* xtclient)
|
|
{
|
|
if(xtclient->top_widget) {
|
|
XtRemoveEventHandler(xtclient->child_widget,
|
|
StructureNotifyMask | KeyPressMask,
|
|
TRUE,
|
|
(XtEventHandler)xt_client_event_handler, xtclient);
|
|
XtDestroyWidget(xtclient->top_widget);
|
|
xtclient->top_widget = NULL;
|
|
}
|
|
}
|
|
|
|
void
|
|
xt_client_set_info (Widget xtplug, unsigned long flags)
|
|
{
|
|
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);
|
|
}
|
|
|
|
static void
|
|
xt_client_handle_xembed_message(Widget w, XtPointer client_data, XEvent *event)
|
|
{
|
|
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 */
|
|
}
|
|
|
|
void
|
|
xt_client_event_handler( Widget w, XtPointer client_data, XEvent *event)
|
|
{
|
|
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 KeyPress:
|
|
#ifdef DEBUG_XTBIN
|
|
printf("Key Press Got!\n");
|
|
#endif
|
|
break;
|
|
default:
|
|
break;
|
|
} /* End of switch(event->type) */
|
|
}
|
|
|
|
static void
|
|
send_xembed_message (XtClient *xtclient,
|
|
long message,
|
|
long detail,
|
|
long data1,
|
|
long data2,
|
|
long time)
|
|
{
|
|
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
|
|
}
|
|
}
|
|
|
|
static int
|
|
error_handler(Display *display, XErrorEvent *error)
|
|
{
|
|
trapped_error_code = error->error_code;
|
|
return 0;
|
|
}
|
|
|
|
static void
|
|
trap_errors(void)
|
|
{
|
|
trapped_error_code =0;
|
|
old_error_handler = XSetErrorHandler(error_handler);
|
|
}
|
|
|
|
static int
|
|
untrap_error(void)
|
|
{
|
|
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;
|
|
}
|
|
|
|
void
|
|
xt_client_focus_listener( Widget w, XtPointer user_data, XEvent *event)
|
|
{
|
|
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) */
|
|
}
|
|
|
|
static void
|
|
xt_add_focus_listener( Widget w, XtPointer user_data)
|
|
{
|
|
XtClient *xtclient = user_data;
|
|
|
|
trap_errors ();
|
|
XtAddEventHandler(w,
|
|
SubstructureNotifyMask | ButtonReleaseMask,
|
|
FALSE,
|
|
(XtEventHandler)xt_client_focus_listener,
|
|
xtclient);
|
|
untrap_error();
|
|
}
|
|
|
|
static void
|
|
xt_remove_focus_listener(Widget w, XtPointer user_data)
|
|
{
|
|
trap_errors ();
|
|
XtRemoveEventHandler(w, SubstructureNotifyMask | ButtonReleaseMask, FALSE,
|
|
(XtEventHandler)xt_client_focus_listener, user_data);
|
|
|
|
untrap_error();
|
|
}
|
|
|
|
static void
|
|
xt_add_focus_listener_tree ( Widget treeroot, XtPointer user_data)
|
|
{
|
|
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;
|
|
}
|
|
|