C++ GDK_THREADS_LEAVE函数代码示例

static gint 
_gail_combo_button_release (gpointer data)
{
  GtkCombo *combo;
  GtkWidget *action_widget;
  GdkEvent tmp_event;

  GDK_THREADS_ENTER ();

  combo = GTK_COMBO (data);
  if (combo->current_button == 0)
    {
      GDK_THREADS_LEAVE ();
      return FALSE;
    }

  tmp_event.button.type = GDK_BUTTON_RELEASE; 
  tmp_event.button.button = 1; 
  tmp_event.button.window = combo->list->window;
  tmp_event.button.time = GDK_CURRENT_TIME;
  gdk_window_set_user_data (combo->list->window, combo->button);
  action_widget = combo->list;

  gtk_widget_event (action_widget, &tmp_event);

  GDK_THREADS_LEAVE ();

  return FALSE;
}

/* Scroll function taken/adapted from gtktreeview.c */
static gint
scroll_row_timeout (gpointer data)
{
	GtkTreeView *tree_view = data;
	GdkRectangle visible_rect;
	gint y, x;
	gint offset;
	gfloat value;
	GtkAdjustment* vadj;
	RbTreeDndData *priv_data;

	GDK_THREADS_ENTER ();

	priv_data = g_object_get_data (G_OBJECT (tree_view), RB_TREE_DND_STRING);
	g_return_val_if_fail(priv_data != NULL, TRUE);

	gdk_window_get_pointer (gtk_tree_view_get_bin_window (tree_view), &x, &y, NULL);
	gtk_tree_view_convert_widget_to_bin_window_coords (tree_view, x, y, &x, &y);
	gtk_tree_view_convert_bin_window_to_tree_coords (tree_view, x, y, &x, &y);

	gtk_tree_view_get_visible_rect (tree_view, &visible_rect);

	/* see if we are near the edge. */
	if (x < visible_rect.x && x > visible_rect.x + visible_rect.width)
	{
		GDK_THREADS_LEAVE ();
		priv_data->scroll_timeout = 0;
		return FALSE;
	}

	offset = y - (visible_rect.y + 2 * SCROLL_EDGE_SIZE);
	if (offset > 0)
	{
		offset = y - (visible_rect.y + visible_rect.height - 2 * SCROLL_EDGE_SIZE);
		if (offset < 0) 
		{
			GDK_THREADS_LEAVE ();
			priv_data->scroll_timeout = 0;
			return FALSE;
		}
	}

	vadj = gtk_tree_view_get_vadjustment (tree_view);
	value = CLAMP (vadj->value + offset, vadj->lower, vadj->upper - vadj->page_size);
	gtk_adjustment_set_value (vadj, value);

	/* don't remove it if we're on the edge and not scrolling */
	if (ABS (vadj->value - value) > 0.0001)
		remove_select_on_drag_timeout(tree_view);

	GDK_THREADS_LEAVE ();

	return TRUE;
}

gboolean populate_files (gpointer data)     //TODO:: show an spinner while loading
{
  FilebrowserBackend *filebackend= FILEBROWSER_BACKEND(data);
  FilebrowserBackendDetails *directory = FILEBROWSER_BACKEND_GET_PRIVATE(filebackend);
  GDK_THREADS_ENTER();
  if (g_cancellable_is_cancelled (directory->cancellable)){
  GDK_THREADS_LEAVE();
  return FALSE; /* remove source */
  }
  GError *error=NULL;
  GFileInfo *info = g_file_enumerator_next_file (directory->enumerator, directory->cancellable, &error);
  if (info){
	  const gchar *mime= g_file_info_get_content_type (info);
	  if (!g_file_info_get_is_hidden (info)  && !g_file_info_get_is_backup (info)){
	    if (MIME_ISDIR(mime)){
		//if has dot in name pos 0 don't process
		const gchar *folder=g_file_info_get_display_name(info);
		if(folder[0]!='.'){
		  FOLDERFILE *current;
		  current=new_folderfile();
		  current->mime=g_strdup(mime);
      GIcon *icon =g_file_info_get_icon(info); 
      current->icon= g_icon_to_string (icon);
		  current->display_name=g_strdup(folder);
		  /* add to list */
		 directory->filesinfolder = g_slist_append(directory->filesinfolder, current);
		  }
	  } else {
	    if (IS_TEXT(mime) && !IS_APPLICATION(mime)){
	      //files
	      FOLDERFILE *current;
	      current=new_folderfile();
	      current->mime=g_strdup(mime);
	      GIcon *icon =g_file_info_get_icon(info); 
	      current->icon= g_icon_to_string (icon);
	      current->display_name=g_strdup(g_file_info_get_display_name(info));
	      /* add to list */
	      directory->filesinfolder = g_slist_append(directory->filesinfolder, current);
	      }
	    }
	  }	
	g_object_unref(info);
   } else {
   	if (error){
   		g_print(_("Error::%s"),error->message);
   		g_error_free (error);
   	}
	GDK_THREADS_LEAVE();
	return FALSE; /* remove source */
   }
    GDK_THREADS_LEAVE();
    return TRUE;
}

guint
bst_choice_modal (GtkWidget *choice,
		  guint      mouse_button,
		  guint32    time)
{
  gpointer data = GUINT_TO_POINTER (0);
  
  if (GTK_IS_MENU (choice))
    {
      GtkMenu *menu = GTK_MENU (choice);
      
      gtk_object_set_data (GTK_OBJECT (menu), "BstChoice", data);
      
      if (bst_choice_selectable (choice))
	{
	  modal_loop_quit_on_menu_item_activate = TRUE;
	  modal_loop_running = TRUE;
	  current_popup_menu = GTK_WIDGET (menu);
	  gtk_menu_popup (menu, NULL, NULL, NULL, NULL, mouse_button, time);
	  while (modal_loop_running)
	    {
	      GDK_THREADS_LEAVE ();
	      g_main_iteration (TRUE);
	      GDK_THREADS_ENTER ();
	    }
	  current_popup_menu = NULL;
	  modal_loop_quit_on_menu_item_activate = FALSE;
	}
      
      data = gtk_object_get_data (GTK_OBJECT (menu), "BstChoice");
    }
  else if (GXK_IS_DIALOG (choice))
    {
      gtk_object_set_data (GTK_OBJECT (choice), "BstChoice", data);
      
      if (bst_choice_selectable (choice))
	{
	  gtk_widget_show (choice);
          
          while (GTK_WIDGET_VISIBLE (choice))
	    {
	      GDK_THREADS_LEAVE ();
	      g_main_iteration (TRUE);
	      GDK_THREADS_ENTER ();
	    }
	}
      
      data = gtk_object_get_data (GTK_OBJECT (choice), "BstChoice");
    }
  
  return GPOINTER_TO_UINT (data);
}

int interface_gtk_start(Playlist *playlist, int argc, char **argv)
{
	char path[256];
	char *home;

	the_coreplayer = playlist->GetCorePlayer();

	g_thread_init(NULL);
	if (!g_thread_supported()) {
		alsaplayer_error("Sorry - this interface requires working threads.\n");
		return 1;
	}

	// Scope functions
	scopes = new AlsaSubscriber();
	scopes->Subscribe(the_coreplayer->GetNode(), POS_END);
	scopes->EnterStream(scope_feeder_func, the_coreplayer);

	gtk_set_locale();
	gtk_init(&argc, &argv);
	gdk_rgb_init();

	home = getenv("HOME");
	if (home) {
		snprintf(path, 255, "%s/.gtkrc", home);
		gtk_rc_parse(path);
	}

	if (playlist->Length())
		playlist->UnPause();
	// Scope addons
	gdk_flush();
	GDK_THREADS_ENTER();
	init_main_window(playlist);
	load_scope_addons();
	gdk_flush();
	gtk_main();
	gdk_flush();
	GDK_THREADS_LEAVE();
	unload_scope_addons();
	destroy_scopes_window();
	GDK_THREADS_ENTER();
	gdk_flush();
	GDK_THREADS_LEAVE();

	playlist->Pause();

	dl_close_scopes();
	return 0;
}

static void the_fftscope(void)
{
	guchar *loc;
	guchar bits [256 * 129];
	int i, h;

	running = 1;

	while (running) {
		guint val;
		gint j;
		gint k;

		memset(bits, 0, 256 * 128);

		for (i=0; i < BARS; i++) { 
			val = 0;
			for (j = xranges[i]; j < xranges[i + 1]; j++) {
				/* k = (guint)(sqrt(fftout[j]) * fftmult); */
				k = (fft_buf[j] + fft_buf[256+j]) / 256;
				val += k;
			}
			if(val > 127) val = 127;
			if (val > (guint)maxbar[ i ]) 
				maxbar[ i ] = val;
			else {
				k = maxbar[ i ] - (4 + (8 / (128 - maxbar[ i ])));
				val = k > 0 ? k : 0;
				maxbar[ i ] = val;
			}
			loc = bits + 256 * 128;
			for (h = val; h > 0; h--) {
				for (j = (256 / BARS) * i + 0; j < (256 / BARS) * i + ((256 / BARS) - 1); j++) {
					*(loc + j) = val-h;
				}
				loc -=256;
			}
		}
		GDK_THREADS_ENTER();
		gdk_draw_indexed_image(area->window, area->style->white_gc,
				0,0,256,128, GDK_RGB_DITHER_NONE, bits, 256, color_map);
		gdk_flush();
		GDK_THREADS_LEAVE();
		dosleep(SCOPE_SLEEP);
	}	
	GDK_THREADS_ENTER();
	fftscope_hide();
	GDK_THREADS_LEAVE();
}

static gboolean
xt_event_check (GSource*  source_data)
{
  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 gint draw_func(gpointer data)
{
	gint i;
	
	if(!window)
	{
		timeout_tag = 0;
		return FALSE;
	}
	
	GDK_THREADS_ENTER();
	gdk_draw_rectangle(draw_pixmap,gc,TRUE,0,0,WIDTH,HEIGHT);

	
	for(i = 0; i < NUM_BANDS; i++)
	{
		/*if(bar_heights[i] > 4)
			bar_heights[i] -= 4;
		else
			bar_heights[i] = 0;*/
		gdk_draw_pixmap(draw_pixmap,gc,bar, 0,HEIGHT - 1 - bar_heights[i], i * (WIDTH / NUM_BANDS), HEIGHT - 1 - bar_heights[i], (WIDTH / NUM_BANDS) - 1, bar_heights[i]);
		
	}
	gdk_window_clear(area->window);
	GDK_THREADS_LEAVE();
	
	return TRUE;
}

static gboolean
select_on_drag_timeout (gpointer data)
{
	GtkTreeView *tree_view = data;
	GtkTreeSelection *selection;
	RbTreeDndData *priv_data;

	GDK_THREADS_ENTER ();

	priv_data = g_object_get_data (G_OBJECT (tree_view), RB_TREE_DND_STRING);
	g_return_val_if_fail(priv_data != NULL, FALSE);
	g_return_val_if_fail(priv_data->previous_dest_path != NULL, FALSE);

	selection = gtk_tree_view_get_selection(tree_view);
	if (!gtk_tree_selection_path_is_selected(selection,priv_data->previous_dest_path)) {
		rb_debug("Changing selection because of drag timeout");
		gtk_tree_view_set_cursor(tree_view,priv_data->previous_dest_path,NULL,FALSE);
	}

	priv_data->select_on_drag_timeout = 0;
	gtk_tree_path_free(priv_data->previous_dest_path);
	priv_data->previous_dest_path = NULL;

	GDK_THREADS_LEAVE ();
	return FALSE;
}

static gboolean vfs_mime_type_reload( gpointer user_data )
{
    GList* l;
    /* FIXME: process mime database reloading properly. */
    /* Remove all items in the hash table */
    GDK_THREADS_ENTER();

    g_static_rw_lock_writer_lock( &mime_hash_lock );
    g_hash_table_foreach_remove ( mime_hash, ( GHRFunc ) gtk_true, NULL );
    g_static_rw_lock_writer_unlock( &mime_hash_lock );

    g_source_remove( reload_callback_id );
    reload_callback_id = 0;

    /* g_debug( "reload mime-types" ); */

    /* call all registered callbacks */
    for( l = reload_cb; l; l = l->next )
    {
        VFSMimeReloadCbEnt* ent = (VFSMimeReloadCbEnt*)l->data;
        ent->cb( ent->user_data );
    }
    GDK_THREADS_LEAVE();
    return FALSE;
}

void show_selection_ascii(struct selectRange *srange)
{
	g_usleep(1);
	GDK_THREADS_ENTER();
	int start, end;
	start = srange->start;
	end = srange->end;

	GtkTextView *textview3 =
	    (GtkTextView *) gtk_builder_get_object(builder, "textview3");

	GtkTextBuffer *buffer3 =
	    gtk_text_view_get_buffer(GTK_TEXT_VIEW(textview3));
	int line1, line2;
	line1 = start / 16;
	start = start - 16 * line1;

	line2 = end / 16;
	end = end - 16 * line2;

	GtkTextIter iter1, iter2;

	gtk_text_buffer_get_iter_at_line_offset(buffer3, &iter1, line1, start);
	gtk_text_buffer_get_iter_at_line_offset(buffer3, &iter2, line2, end);
	gtk_text_buffer_select_range(buffer3, &iter1, &iter2);

	GDK_THREADS_LEAVE();
}

static gint clock_timer_callback(gpointer data){
	Clock *clock = (Clock *)data;
	GDK_THREADS_ENTER ();
	clock_gen_str(clock);
	GDK_THREADS_LEAVE ();
	return TRUE;
}

static gboolean
on_pad_buffer (GstPad *pad, 
               GstBuffer *buf)
{
    gint64 timestamp;

    GDK_THREADS_ENTER ();

    timestamp = GST_BUFFER_TIMESTAMP (buf);

    if (buffer) 
        gst_buffer_unref (buffer);

    buffer = buf;
    gst_buffer_ref (buf);
    GDK_THREADS_LEAVE ();

    if (start_time == 0)
        start_time = get_time ();
    else {
        gint64 time_left = (timestamp / 1000) - (get_time () - start_time);
        time_left -= 1000000 / 25;
        if (time_left > 2000)
            usleep (time_left);

    }

    return TRUE;
}

static void
thunar_uca_provider_child_watch (GPid     pid,
                                 gint     status,
                                 gpointer user_data)
{
  ThunarUcaProvider *uca_provider = THUNAR_UCA_PROVIDER (user_data);
  ThunarVfsMonitor  *monitor;
  ThunarVfsPath     *path;

  GDK_THREADS_ENTER ();

  /* verify that we still have a valid child_watch_path */
  if (G_LIKELY (uca_provider->child_watch_path != NULL))
    {
      /* determine the corresponding ThunarVfsPath */
      path = thunar_vfs_path_new (uca_provider->child_watch_path, NULL);
      if (G_LIKELY (path != NULL))
        {
          /* schedule a changed notification on the path */
          monitor = thunar_vfs_monitor_get_default ();
          thunar_vfs_monitor_feed (monitor, THUNAR_VFS_MONITOR_EVENT_CHANGED, path);
          g_object_unref (G_OBJECT (monitor));

          /* release the ThunarVfsPath */
          thunar_vfs_path_unref (path);
        }
    }

  /* need to cleanup */
  g_spawn_close_pid (pid);

  GDK_THREADS_LEAVE ();
}

static gboolean
xt_event_dispatch (GSource*  source_data,
                    GSourceFunc call_back,
                    gpointer  user_data)
{
  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;  
}