Blame gtk/gtktooltips.c

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/* GTK - The GIMP Toolkit
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 * Copyright (C) 1995-1997 Peter Mattis, Spencer Kimball and Josh MacDonald
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 *
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 * This library is free software; you can redistribute it and/or
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 * modify it under the terms of the GNU Lesser General Public
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 * License as published by the Free Software Foundation; either
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 * version 2 of the License, or (at your option) any later version.
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 *
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 * This library is distributed in the hope that it will be useful,
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 * but WITHOUT ANY WARRANTY; without even the implied warranty of
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 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
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 * Lesser General Public License for more details.
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 *
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 * You should have received a copy of the GNU Lesser General Public
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 * License along with this library; if not, write to the
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 * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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 * Boston, MA 02111-1307, USA.
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 */
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/*
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 * Modified by the GTK+ Team and others 1997-2000.  See the AUTHORS
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 * file for a list of people on the GTK+ Team.  See the ChangeLog
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 * files for a list of changes.  These files are distributed with
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 * GTK+ at ftp://ftp.gtk.org/pub/gtk/. 
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 */
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#include "config.h"
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#include <stdlib.h>
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#include <string.h>
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#include <stdio.h>
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#undef GTK_DISABLE_DEPRECATED
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#include "gtklabel.h"
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#include "gtkmain.h"
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#include "gtkmenuitem.h"
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#include "gtkprivate.h"
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#include "gtkwidget.h"
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#include "gtkwindow.h"
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#include "gtkstyle.h"
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#include "gtktooltips.h"
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#include "gtkintl.h"
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#include "gtkalias.h"
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#define DEFAULT_DELAY 500           /* Default delay in ms */
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#define STICKY_DELAY 0              /* Delay before popping up next tip
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                                     * if we're sticky
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                                     */
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#define STICKY_REVERT_DELAY 1000    /* Delay before sticky tooltips revert
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				     * to normal
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                                     */
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#define GTK_TOOLTIPS_GET_PRIVATE(obj) (G_TYPE_INSTANCE_GET_PRIVATE ((obj), GTK_TYPE_TOOLTIPS, GtkTooltipsPrivate))
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typedef struct _GtkTooltipsPrivate GtkTooltipsPrivate;
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struct _GtkTooltipsPrivate
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{
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  GHashTable *tips_data_table;
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};
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static void gtk_tooltips_finalize          (GObject         *object);
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static void gtk_tooltips_destroy           (GtkObject       *object);
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static void gtk_tooltips_destroy_data      (GtkTooltipsData *tooltipsdata);
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static void gtk_tooltips_widget_remove     (GtkWidget       *widget,
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                                            gpointer         data);
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static const gchar  tooltips_data_key[] = "_GtkTooltipsData";
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static const gchar  tooltips_info_key[] = "_GtkTooltipsInfo";
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G_DEFINE_TYPE (GtkTooltips, gtk_tooltips, GTK_TYPE_OBJECT)
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static void
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gtk_tooltips_class_init (GtkTooltipsClass *class)
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{
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  GtkObjectClass *object_class = (GtkObjectClass *) class;
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  GObjectClass *gobject_class = (GObjectClass *) class;
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  gobject_class->finalize = gtk_tooltips_finalize;
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  object_class->destroy = gtk_tooltips_destroy;
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  g_type_class_add_private (gobject_class, sizeof (GtkTooltipsPrivate));
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}
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static void
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gtk_tooltips_init (GtkTooltips *tooltips)
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{
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  GtkTooltipsPrivate *private = GTK_TOOLTIPS_GET_PRIVATE (tooltips);
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  tooltips->tip_window = NULL;
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  tooltips->active_tips_data = NULL;
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  tooltips->tips_data_list = NULL;
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  tooltips->delay = DEFAULT_DELAY;
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  tooltips->enabled = TRUE;
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  tooltips->timer_tag = 0;
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  tooltips->use_sticky_delay = FALSE;
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  tooltips->last_popdown.tv_sec = -1;
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  tooltips->last_popdown.tv_usec = -1;
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  private->tips_data_table =
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    g_hash_table_new_full (NULL, NULL, NULL,
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                           (GDestroyNotify) gtk_tooltips_destroy_data);
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  gtk_tooltips_force_window (tooltips);
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}
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static void
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gtk_tooltips_finalize (GObject *object)
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{
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  GtkTooltipsPrivate *private = GTK_TOOLTIPS_GET_PRIVATE (object);
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  g_hash_table_destroy (private->tips_data_table);
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  G_OBJECT_CLASS (gtk_tooltips_parent_class)->finalize (object);
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}
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GtkTooltips *
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gtk_tooltips_new (void)
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{
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  return g_object_new (GTK_TYPE_TOOLTIPS, NULL);
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}
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static void
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gtk_tooltips_destroy_data (GtkTooltipsData *tooltipsdata)
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{
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  g_free (tooltipsdata->tip_text);
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  g_free (tooltipsdata->tip_private);
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  g_signal_handlers_disconnect_by_func (tooltipsdata->widget,
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					gtk_tooltips_widget_remove,
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					tooltipsdata);
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  g_object_set_data (G_OBJECT (tooltipsdata->widget), I_(tooltips_data_key), NULL);
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  g_object_unref (tooltipsdata->widget);
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  g_free (tooltipsdata);
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}
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static void
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gtk_tooltips_destroy (GtkObject *object)
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{
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  GtkTooltips *tooltips = GTK_TOOLTIPS (object);
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  GtkTooltipsPrivate *private = GTK_TOOLTIPS_GET_PRIVATE (tooltips);
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  if (tooltips->tip_window)
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    {
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      gtk_widget_destroy (tooltips->tip_window);
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      tooltips->tip_window = NULL;
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    }
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  g_hash_table_remove_all (private->tips_data_table);
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  GTK_OBJECT_CLASS (gtk_tooltips_parent_class)->destroy (object);
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}
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void
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gtk_tooltips_force_window (GtkTooltips *tooltips)
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{
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  g_return_if_fail (GTK_IS_TOOLTIPS (tooltips));
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  if (!tooltips->tip_window)
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    {
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      tooltips->tip_window = gtk_window_new (GTK_WINDOW_POPUP);
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      g_signal_connect (tooltips->tip_window,
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			"destroy",
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			G_CALLBACK (gtk_widget_destroyed),
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			&tooltips->tip_window);
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      tooltips->tip_label = gtk_label_new (NULL);
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      gtk_container_add (GTK_CONTAINER (tooltips->tip_window),
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			 tooltips->tip_label);
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    }
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}
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void
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gtk_tooltips_enable (GtkTooltips *tooltips)
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{
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  g_return_if_fail (tooltips != NULL);
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  tooltips->enabled = TRUE;
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}
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void
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gtk_tooltips_disable (GtkTooltips *tooltips)
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{
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  g_return_if_fail (tooltips != NULL);
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  tooltips->enabled = FALSE;
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}
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void
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gtk_tooltips_set_delay (GtkTooltips *tooltips,
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                        guint         delay)
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{
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  g_return_if_fail (tooltips != NULL);
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  tooltips->delay = delay;
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}
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GtkTooltipsData*
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gtk_tooltips_data_get (GtkWidget       *widget)
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{
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  g_return_val_if_fail (widget != NULL, NULL);
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  return g_object_get_data (G_OBJECT (widget), tooltips_data_key);
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}
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/**
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 * gtk_tooltips_set_tip:
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 * @tooltips: a #GtkTooltips.
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 * @widget: the #GtkWidget you wish to associate the tip with.
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 * @tip_text: (allow-none): a string containing the tip itself.
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 * @tip_private: (allow-none): a string of any further information that may be useful if the user gets stuck.
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 *
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 * Adds a tooltip containing the message @tip_text to the specified #GtkWidget.
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 * Deprecated: 2.12:
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 */
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void
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gtk_tooltips_set_tip (GtkTooltips *tooltips,
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		      GtkWidget   *widget,
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		      const gchar *tip_text,
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		      const gchar *tip_private)
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{
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  GtkTooltipsData *tooltipsdata;
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  g_return_if_fail (GTK_IS_TOOLTIPS (tooltips));
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  g_return_if_fail (widget != NULL);
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  tooltipsdata = gtk_tooltips_data_get (widget);
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  if (!tip_text)
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    {
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      if (tooltipsdata)
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	gtk_tooltips_widget_remove (tooltipsdata->widget, tooltipsdata);
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      return;
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    }
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  if (tooltips->active_tips_data 
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      && tooltipsdata
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      && tooltips->active_tips_data->widget == widget
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      && GTK_WIDGET_DRAWABLE (tooltips->active_tips_data->widget))
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    {
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      g_free (tooltipsdata->tip_text);
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      g_free (tooltipsdata->tip_private);
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      tooltipsdata->tip_text = g_strdup (tip_text);
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      tooltipsdata->tip_private = g_strdup (tip_private);
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    }
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  else 
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    {
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      g_object_ref (widget);
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      if (tooltipsdata)
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        gtk_tooltips_widget_remove (tooltipsdata->widget, tooltipsdata);
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      tooltipsdata = g_new0 (GtkTooltipsData, 1);
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      tooltipsdata->tooltips = tooltips;
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      tooltipsdata->widget = widget;
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      tooltipsdata->tip_text = g_strdup (tip_text);
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      tooltipsdata->tip_private = g_strdup (tip_private);
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      g_hash_table_insert (GTK_TOOLTIPS_GET_PRIVATE (tooltips)->tips_data_table,
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                           widget, tooltipsdata);
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      g_object_set_data (G_OBJECT (widget), I_(tooltips_data_key),
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                         tooltipsdata);
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      g_signal_connect (widget, "destroy",
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                        G_CALLBACK (gtk_tooltips_widget_remove),
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			tooltipsdata);
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    }
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  gtk_widget_set_tooltip_text (widget, tip_text);
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}
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static void
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gtk_tooltips_widget_remove (GtkWidget *widget,
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			    gpointer   data)
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{
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  GtkTooltipsData *tooltipsdata = (GtkTooltipsData*) data;
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  GtkTooltips *tooltips = tooltipsdata->tooltips;
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  GtkTooltipsPrivate *private = GTK_TOOLTIPS_GET_PRIVATE (tooltips);
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  g_hash_table_remove (private->tips_data_table, tooltipsdata->widget);
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}
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/**
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 * gtk_tooltips_get_info_from_tip_window:
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 * @tip_window: a #GtkWindow 
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 * @tooltips: the return location for the tooltips which are displayed 
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 *    in @tip_window, or %NULL
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 * @current_widget: the return location for the widget whose tooltips 
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 *    are displayed, or %NULL
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 * 
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 * Determines the tooltips and the widget they belong to from the window in 
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 * which they are displayed. 
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 *
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 * This function is mostly intended for use by accessibility technologies;
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 * applications should have little use for it.
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 * 
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 * Return value: %TRUE if @tip_window is displaying tooltips, otherwise %FALSE.
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 *
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 * Since: 2.4
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 *
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 * Deprecated: 2.12:
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 **/
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gboolean
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gtk_tooltips_get_info_from_tip_window (GtkWindow    *tip_window,
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                                       GtkTooltips **tooltips,
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                                       GtkWidget   **current_widget)
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{
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  GtkTooltips  *current_tooltips;  
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  gboolean has_tips;
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  g_return_val_if_fail (GTK_IS_WINDOW (tip_window), FALSE);
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  current_tooltips = g_object_get_data (G_OBJECT (tip_window), tooltips_info_key);
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  has_tips = current_tooltips != NULL;
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  if (tooltips)
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    *tooltips = current_tooltips;
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  if (current_widget)
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    *current_widget = (has_tips && current_tooltips->active_tips_data) ? current_tooltips->active_tips_data->widget : NULL;
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  return has_tips;
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}
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#define __GTK_TOOLTIPS_C__
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#include "gtkaliasdef.c"