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/* progress_dlg.c
* Routines for progress-bar (modal) dialog
*
* $Id: progress_dlg.c,v 1.9 2001/03/24 02:07:22 guy Exp $
*
* Ethereal - Network traffic analyzer
* By Gerald Combs <gerald@zing.org>
* Copyright 1998 Gerald Combs
*
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
#ifdef HAVE_CONFIG_H
# include "config.h"
#endif
#include "gtkglobals.h"
#include "dlg_utils.h"
#include "progress_dlg.h"
#define PROG_BAR_KEY "progress_bar"
static gint delete_event_cb(GtkWidget *w, GdkEvent *event, gpointer data);
static void stop_cb(GtkWidget *w, gpointer data);
/*
* Define the structure describing a progress dialog.
*/
struct progdlg {
GtkWidget *dlg_w; /* top-level window widget */
};
/*
* Create and pop up the progress dialog; allocate a "progdlg_t"
* and initialize it to contain all information the implementation
* needs in order to manipulate the dialog, and return a pointer to
* it.
*
* The first argument is the title to give the dialog box; the second
* argument is the string to put in the "stop this operation" button;
* the third argument is a pointer to a Boolean variable that will be
* set to TRUE if the user hits that button.
*
* XXX - provide a way to specify the progress in units, with the total
* number of units specified as an argument when the progress dialog
* is created; updates would be given in units, with the progress dialog
* code computing the percentage, and the progress bar would have a
* label "0" on the left and <total number of units> on the right, with
* a label in the middle giving the number of units we've processed
* so far. This could be used when filtering packets, for example; we
* wouldn't always use it, as we have no idea how many packets are to
* be read.
*/
progdlg_t *
create_progress_dlg(const gchar *title, const gchar *stop_title,
gboolean *stop_flag)
{
progdlg_t *dlg;
GtkWidget *dlg_w, *main_vb, *title_lb, *prog_bar, *bbox, *stop_bt;
dlg = g_malloc(sizeof (progdlg_t));
dlg_w = dlg_window_new(title);
gtk_window_set_modal(GTK_WINDOW(dlg_w), TRUE);
/*
* Container for dialog widgets.
*/
main_vb = gtk_vbox_new(FALSE, 1);
gtk_container_border_width(GTK_CONTAINER(main_vb), 5);
gtk_container_add(GTK_CONTAINER(dlg_w), main_vb);
/*
* Put the title here as a label indicating what we're
* doing; set its alignment and padding so it's aligned on the
* left.
*/
title_lb = gtk_label_new(title);
gtk_box_pack_start(GTK_BOX(main_vb), title_lb, FALSE, TRUE, 3);
gtk_misc_set_alignment(GTK_MISC(title_lb), 0.0, 0.0);
gtk_misc_set_padding(GTK_MISC(title_lb), 0.0, 0.0);
/*
* The progress bar.
*/
prog_bar = gtk_progress_bar_new();
gtk_progress_set_activity_mode(GTK_PROGRESS(prog_bar), FALSE);
gtk_box_pack_start(GTK_BOX(main_vb), prog_bar, FALSE, TRUE, 3);
/*
* Attach a pointer to the progress bar widget to the top-level
* widget.
*/
gtk_object_set_data(GTK_OBJECT(dlg_w), PROG_BAR_KEY, prog_bar);
/*
* Button row: cancel button.
* (We put it in an HButtonBox, even though there's only one
* of them, so that it doesn't expand to the width of the window.)
*/
bbox = gtk_hbutton_box_new();
gtk_button_box_set_spacing(GTK_BUTTON_BOX(bbox), 5);
gtk_container_add(GTK_CONTAINER(main_vb), bbox);
/*
* Allow user to either click a "stop this operation" button, or
* the close button on the window, to stop an operation in
* progress.
*/
stop_bt = gtk_button_new_with_label(stop_title);
gtk_box_pack_start(GTK_BOX (bbox), stop_bt, TRUE, TRUE, 0);
gtk_signal_connect(GTK_OBJECT(stop_bt), "clicked",
GTK_SIGNAL_FUNC(stop_cb), (gpointer) stop_flag);
gtk_signal_connect(GTK_OBJECT(dlg_w), "delete_event",
GTK_SIGNAL_FUNC(delete_event_cb), (gpointer) stop_flag);
GTK_WIDGET_SET_FLAGS(stop_bt, GTK_CAN_DEFAULT);
gtk_widget_grab_default(stop_bt);
GTK_WIDGET_SET_FLAGS(stop_bt, GTK_CAN_DEFAULT);
gtk_widget_grab_default(stop_bt);
gtk_widget_show_all(dlg_w);
dlg->dlg_w = dlg_w;
return dlg;
}
/*
* Called when the dialog box is to be deleted.
* Set the "stop" flag to TRUE, and return TRUE - we don't want the dialog
* box deleted now, our caller will do so when they see that the
* "stop" flag is TRUE and abort the operation.
*/
static gint
delete_event_cb(GtkWidget *w, GdkEvent *event, gpointer data)
{
gboolean *stop_flag = (gboolean *) data;
*stop_flag = TRUE;
return TRUE;
}
/*
* Called when the "stop this operation" button is clicked.
* Set the "stop" flag to TRUE; we don't have to destroy the dialog
* box, as our caller will do so when they see that the "stop" flag is
* true and abort the operation.
*/
static void
stop_cb(GtkWidget *w, gpointer data)
{
gboolean *stop_flag = (gboolean *) data;
*stop_flag = TRUE;
}
/*
* Set the percentage value of the progress bar.
*/
void
update_progress_dlg(progdlg_t *dlg, gfloat percentage)
{
GtkWidget *dlg_w = dlg->dlg_w;
GtkWidget *prog_bar;
prog_bar = gtk_object_get_data(GTK_OBJECT(dlg_w), PROG_BAR_KEY);
gtk_progress_bar_update(GTK_PROGRESS_BAR(prog_bar), percentage);
/*
* Flush out the update and process any input events.
*/
while (gtk_events_pending())
gtk_main_iteration();
}
/*
* Destroy the progress dialog.
*/
void
destroy_progress_dlg(progdlg_t *dlg)
{
GtkWidget *dlg_w = dlg->dlg_w;
gtk_widget_destroy(GTK_WIDGET(dlg_w));
g_free(dlg);
}
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