zenity/src/progress.c

/*
 * progress.c
 *
 * Copyright (C) 2002 Sun Microsystems, Inc.
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Library General Public
 * License as published by the Free Software Foundation; either
 * version 2 of the License, or (at your option) any later version.
 *
 * This library 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
 * Library General Public License for more details.
 *
 * You should have received a copy of the GNU Library General Public
 * License along with this library; if not, write to the
 * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
 * Boston, MA 02111-1307, USA.
 *
 * Authors: Glynn Foster <glynn.foster@sun.com>
 */

#include <stdio.h>
#include <glade/glade.h>
#include "zenity.h"
#include "util.h"

static guint timer;
static GladeXML *glade_dialog;

gint zenity_progress_timeout (gpointer data);
gint zenity_progress_pulsate_timeout (gpointer data);

static void zenity_progress_dialog_response (GtkWidget *widget, int response, gpointer data);

void
zenity_progress (ZenityData *data, ZenityProgressData *progress_data)
{
  GtkWidget *dialog;
  GtkWidget *text;
  GtkWidget *progress_bar;
  guint input;

  glade_dialog = zenity_util_load_glade_file ("zenity_progress_dialog");

  if (glade_dialog == NULL) {
    data->exit_code = -1;
    return;
  }
	
  glade_xml_signal_autoconnect (glade_dialog);
	
  dialog = glade_xml_get_widget (glade_dialog, "zenity_progress_dialog");

  g_signal_connect (G_OBJECT (dialog), "response",
                    G_CALLBACK (zenity_progress_dialog_response), data);
	
  if (data->dialog_title)
    gtk_window_set_title (GTK_WINDOW (dialog), data->dialog_title);

  if (data->window_icon)
    zenity_util_set_window_icon (dialog, data->window_icon);
  else {
    zenity_util_set_window_icon (dialog, ZENITY_IMAGE_FULLPATH ("zenity-progress.png"));
  }

  text = glade_xml_get_widget (glade_dialog, "zenity_progress_text");
  gtk_label_set_text (GTK_LABEL (text), progress_data->dialog_text);

  progress_bar = glade_xml_get_widget (glade_dialog, "zenity_progress_bar");

  if (progress_data->percentage > -1)
    gtk_progress_bar_set_fraction (GTK_PROGRESS_BAR (progress_bar), 
                                   progress_data->percentage/100.0);
	
  gtk_widget_show (dialog);
  if (!progress_data->pulsate)
    timer = gtk_timeout_add (100, zenity_progress_timeout, progress_bar);
  else
    timer = gtk_timeout_add (100, zenity_progress_pulsate_timeout, progress_bar);

  gtk_main ();
}

gint 
zenity_progress_timeout (gpointer data)
{
  gchar buffer[256];
  float percentage;

  while(gtk_events_pending()) {
    gtk_main_iteration();

    if (timer == 0)
      return FALSE;
  }

  if (scanf ("%255s", buffer) == EOF) {
    GtkWidget *button;

    button = glade_xml_get_widget (glade_dialog, "zenity_progress_ok_button");
    gtk_widget_set_sensitive (button, TRUE);
    gtk_widget_grab_focus (button);

    button = glade_xml_get_widget (glade_dialog, "zenity_progress_cancel_button");
    gtk_widget_set_sensitive (button, FALSE);
		
    if (glade_dialog)
      g_object_unref (glade_dialog);

    return FALSE;
  } else {
    percentage = atoi (buffer);

    if (percentage > 100)
      gtk_progress_bar_set_fraction (GTK_PROGRESS_BAR (data), 1.0);
    else
      gtk_progress_bar_set_fraction (GTK_PROGRESS_BAR (data), percentage / 100.0);

    return TRUE;
  }
}

gint 
zenity_progress_pulsate_timeout (gpointer data)
{
        
  while(gtk_events_pending()) {
    gtk_main_iteration();

    if (timer == 0)
      return FALSE;
  }

  if (feof (stdin)) {
    gtk_progress_bar_pulse (GTK_PROGRESS_BAR (data));
    return FALSE;
  } else  {
    GtkWidget *button;

    /* We stop the pulsating and switch the focus on the dialog buttons */
		  
    gtk_progress_bar_set_fraction (GTK_PROGRESS_BAR (data), 1.0);

    button = glade_xml_get_widget (glade_dialog, "zenity_progress_ok_button");
    gtk_widget_set_sensitive (button, TRUE);
    gtk_widget_grab_focus (button);

    button = glade_xml_get_widget (glade_dialog, "zenity_progress_cancel_button");
    gtk_widget_set_sensitive (button, FALSE);

    return TRUE;
  }
}

static void
zenity_progress_dialog_response (GtkWidget *widget, int response, gpointer data)
{
  ZenityData *zen_data = data;

  switch (response) {
    case GTK_RESPONSE_OK:
      zen_data->exit_code = 0;
      gtk_main_quit ();
      break;
		
    case GTK_RESPONSE_CANCEL:
      zen_data->exit_code = 1;
      gtk_main_quit ();
      break;
  
    default:
      /* Esc dialog */
      zen_data->exit_code = 1;
      break;
  }
}