/*
 * about.c
 *
 * Copyright (C) 2002 Sun Microsystems, Inc.
 * Copyright (C) 2001 CodeFactory AB
 * Copyright (C) 2001, 2002 Anders Carlsson
 *
 * 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>
 *          Anders Carlsson <andersca@gnu.org>
 */

#include "config.h"
#include "zenity.h"
#include "util.h"
#include <string.h>
#include <gdk/gdkkeysyms.h>
#include <libgnomecanvas/libgnomecanvas.h>
#include <glade/glade.h>

#define GTK_RESPONSE_CREDITS 0
#define ZENITY_HELP_PATH ZENITY_DATADIR "/help/"
#define ZENITY_CLOTHES_PATH ZENITY_DATADIR "/clothes/"

#define ZENITY_CANVAS_X 400.0
#define ZENITY_CANVAS_Y 280.0

static GtkWidget *dialog;
static GtkWidget *cred_dialog;

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

/* Sync with the people in the THANKS file */
static const gchar *author_credits[] = {
  "Authors",
  "=======",
  "Glynn Foster <glynn.foster@sun.com>",
  "Mike Newman <mikegtn@gnome.org>",
  "",
  "Patches from the following people",
  "=================================",
  "Peter Astrand  <astrand@lysator.liu.se>",
  "Jonathan Blandford  <jrb@redhat.com>",
  "Ross Burton  <ross@burtonini.com>",
  "Damien Carbery  <damien.carbery@sun.com>",
  "Anders Carlsson  <andersca@codefactory.se>",
  "Nicholas Curran  <quasar@austar.net.au>",
  "John Fleck  <jfleck@inkstain.net>",
  "James Henstridge  <james@daa.com.au>",
  "Mihai T. Lazarescu  <mihai@email.it>",
  "Tomasz Koczko  <kloczek@pld.org.pl>",
  "Jordi Mallach  <jordi@sindominio.net>",
  "Kjartan Maraas  <kmaraas@gnome.org>",
  "Buhan Milne  <bgmilne@linux-mandrake.com>",
  "Christian Monneckes  <c-w-m@gmx.de>",
  "Havoc Pennington  <hp@redhat.com>",
  "Jan Arne Petersen  <jpetersen@uni-bonn.de>",
  "Kevin C. Krinke  <kckrinke@opendoorsoftware.com>",
  "Kristian Rietveld  <kris@gtk.org>",
  "Christian Rose  <menthos@menthos.com>",
  "Jakub Steiner  <jimmac@ximian.com>",
  "Daniel d'Surreal  <dagmar@speakeasy.net>",
  "Hidetoshi Tajima  <hidetoshi.tajima@sun.com>",
  "Tom Tromey  <tromey@redhat.com>",
  "Yann  <bloch@iie.cnam.fr>",
  "",
  "And all the translators that rock my world",
  "==========================================",
  "Vincent van Adrighem  <v.vanadrighem@dirck.mine.nu>",
  "Taneem Ahmed  <taneem@bengalinux.org>",
  "Takeshi Aihana <aihana@gnome.gr.jp>",
  "Amanpreet Singh Alam  <amanlinux@netscape.net>",
  "Sanlig Badral  <badral@openmn.org>",
  "Aygimantas Beruka  <uid0@tuxfamily.org>",
  "Alberto Fernandez Benito <afernn@euskalnet.net>",
  "Stefano Canepa  <sc@linux.it>",
  "Young-Ho Cha <ganadist@mizi.com>",
  "Abel Cheung  <maddog@linux.org.hk>",
  "Zbigniew Chyla  <cyba@gnome.pl>",
  "Fatih Demir  <kabalak@gtranslator.org>",
  "Laurent Dhima  <laurenti@alblinux.net>",
  "Paul Duffy <dubhthach@frink.nuigalway.ie>",
  "Francisco Javier Fernandez  <serrador@arrakis.es>",
  "Artur Flinta  <aflinta@cvs.gnome.org>",
  "Alessio Frusciante  <algol@firenze.linux.it>",
  "Evandro Fernandes Giovanini  <evandrofg@ig.com.br>",
  "Pablo Gonzalo del Campo  <pablodc@bigfoot.com>",
  "Dhurba Gnawali  <dhurbagnawali@hotmail.com>",
  "Sammi Gunnarsson  <sammi@techattack.nu>",
  "Dafydd Harries  <daf@parnassus.ath.cx>",
  "Wang Jian  <lark@linux.net.cn>",
  "Guntupalli Karunakar  <karunakar@freedomink.org>",
  "Tomas Kuliavas  <tokul@users.sourceforge.net>",
  "Priit Laes  <amd@tt.ee>",
  "Iaki Larraaga  <dooteo@euskalgnu.org>",
  "Ole Laursen  <olau@hardworking.dk>",
  "Toivo Leedjrv  <toivo@linux.ee>",
  "Duarte Loreto  <happyguy_pt@hotmail.com>",
  "Johanna Makkonen  <johanna.makkonen@iki.fi>",
  "Jordi Mallach  <jordi@sindominio.net>",
  "Kjartan Maraas  <kmaraas@gnome.org>",
  "Jordi Mas  <jmas@softcatala.org>",
  "Kamagasako Masatoshi  <emerald@gnome.gr.jp>",
  "Dmitry G. Mastrukov  <dmitry@taurussoft.org>",
  "Arafat Medini  <lumina@silverpen.de>",
  "Christophe Merlet  <redfox@redfoxcenter.org>",
  "Mike Newman  <mikegtn@gnome.org>",
  "Alexandre Folle de Menezes  <afmenez@terra.com.br>",
  "Christian Neumair  <chris@gnome-de.org>",
  "Metin Omirov  <metin@karegen.com>",
  "Kostas Papadimas  <pkst@gmx.net>",
  "Sami Pesonen  <sampeson@iki.fi>",
  "Roozbeh Pournader  <roozbeh@sharif.edu>",
  "Jarkko Ranta  <jjranta@cc.joensuu.fi>",
  "Christian Rose  <menthos@menthos.com>",
  "Changwoo Ryu  <cwryu@debian.org>",
  "Pablo Saratxaga  <pablo@mandrakesoft.com>",
  "Robert Sedak  <robert.sedak@sk.htnet.hr>",
  "Paisa Seeluangsawat  <paisa@users.sf.net>",
  "Danilo Segan  <dsegan@gmx.net>",
  "Aasmund Skjaveland  <aasmunds@fys.uio.no>",
  "Yuriy Syrota  <rasta renome.rovno.ua>",
  "Marcel Telka  <marcel@telka.sk>",
  "Andras Timar  <timar@gnome.hu>",
  "Miloslav Trmac  <mitr@volny.cz>",
  "Daniel Yacob  <locales@geez.org>",
  "Funda Wang <fundawang@linux.net.cn>",
  NULL
};

gchar *translator_credits;

static gint
zenity_move_clothes_event (GnomeCanvasItem *item, 
                           GdkEvent *event,
                           gpointer data)
{
  static double x, y;
  double new_x, new_y;
  static int dragging;
  double item_x, item_y;

  /* set item_[xy] to the event x,y position in the parent's 
   * item-relative coordinates
   */
  
  item_x = event->button.x;
  item_y = event->button.y;
  gnome_canvas_item_w2i (item->parent, &item_x, &item_y);

  switch (event->type) {
    case GDK_BUTTON_PRESS:
      x = item_x;
      y = item_y;
      gnome_canvas_item_ungrab (item, event->button.time);
      gnome_canvas_item_raise_to_top (item);
      dragging = TRUE;
      break;

    case GDK_MOTION_NOTIFY:
      if (dragging && (event->motion.state & GDK_BUTTON1_MASK)) {
        new_x = item_x;
        new_y = item_y;

        gnome_canvas_item_move (item, new_x - x, new_y - y);
        x = new_x;
        y = new_y;
      }
      break;

    case GDK_BUTTON_RELEASE:
      gnome_canvas_item_ungrab (item, event->button.time);
      dragging = FALSE;
      break;

    default:
      break;
  }

  return FALSE;
}

typedef struct 
{
  const gchar *filename;
  gdouble x, y;
} MonkClothes;

static MonkClothes monk_clothes[] = {
  {"gnome-tshirt.png", 30.0, 20.0},
  {"sunglasses.png", ZENITY_CANVAS_X - 100.0 , ZENITY_CANVAS_Y - 150.0 },
  {"surfboard.png", 30.0, ZENITY_CANVAS_Y - 200.0},
  {"hawaii-shirt.png", ZENITY_CANVAS_X - 50.0, 20.0}
};

static void
zenity_create_clothes (GtkWidget *canvas_board)
{
  GdkPixbuf *pixbuf;
  GnomeCanvasItem *canvas_item;
  gchar *pixbuf_path;
  gint i;

  for (i = 0; i < G_N_ELEMENTS (monk_clothes); i++) {
    pixbuf_path = g_strconcat (ZENITY_CLOTHES_PATH, monk_clothes[i].filename, NULL); 
    pixbuf = gdk_pixbuf_new_from_file (pixbuf_path, NULL);

    canvas_item = gnome_canvas_item_new (GNOME_CANVAS_GROUP (GNOME_CANVAS (canvas_board)->root),
                                         GNOME_TYPE_CANVAS_PIXBUF,
                                         "x", monk_clothes[i].x,
                                         "y", monk_clothes[i].y,
                                         "pixbuf", pixbuf,
                                         "anchor", GTK_ANCHOR_NW,
                                          NULL);
    g_signal_connect (G_OBJECT (canvas_item), "event",
                      G_CALLBACK (zenity_move_clothes_event), NULL);
  }
}

static GtkWidget *
zenity_create_monk (void)
{
  GtkWidget *canvas_board;
  GnomeCanvasItem *canvas_item;
  GdkPixbuf *pixbuf;
  GdkColor color = { 0, 0xffff, 0xffff, 0xffff };

  canvas_board = gnome_canvas_new ();

  gnome_canvas_set_scroll_region (GNOME_CANVAS (canvas_board), 0, 0,
                                  ZENITY_CANVAS_X, ZENITY_CANVAS_Y);

  gtk_widget_set_size_request (canvas_board, ZENITY_CANVAS_X, ZENITY_CANVAS_Y);

  gdk_colormap_alloc_color (gtk_widget_get_colormap (GTK_WIDGET (canvas_board)),
                            &color, FALSE, TRUE);

  gtk_widget_modify_bg (GTK_WIDGET (canvas_board), GTK_STATE_NORMAL, &color);

  pixbuf = gdk_pixbuf_new_from_file (ZENITY_CLOTHES_PATH "monk.png", NULL);

  canvas_item = gnome_canvas_item_new (GNOME_CANVAS_GROUP (GNOME_CANVAS (canvas_board)->root),
                                       GNOME_TYPE_CANVAS_PIXBUF,
                                       "x", (ZENITY_CANVAS_X / 2.0)/2.0 + 10.0,
                                       "y", (ZENITY_CANVAS_Y / 2.0)/2.0 - 50.0,
                                       "pixbuf", pixbuf,
                                       "anchor", GTK_ANCHOR_NW,
                                       NULL);

  zenity_create_clothes (canvas_board);

  return canvas_board;
}

static GtkWidget *
zenity_create_boutique (void) 
{
  GtkWidget *window;
  GtkWidget *canvas;

  window = gtk_window_new (GTK_WINDOW_TOPLEVEL);

  zenity_util_set_window_icon (window, ZENITY_IMAGE_FULLPATH ("zenity.png"));
  canvas = zenity_create_monk ();
  gtk_container_add (GTK_CONTAINER (window), canvas);

  return window;
}

static gboolean
zenity_zen_wisdom (GtkDialog *dialog, GdkEventKey *event, gpointer user_data)
{
  static gint string_count;

  if (string_count >= 3)
    return FALSE;

  switch (event->keyval) {
    case GDK_N:
    case GDK_n:
      if (string_count == 2) {
        GtkWidget *window;
        window = zenity_create_boutique ();
        gtk_widget_show_all (window);
        string_count++;
      } else {
        string_count = 0;
      }
      break;
    case GDK_Z:
    case GDK_z:
      if (string_count == 0)
        string_count++;
      else
        string_count = 0;
      break;
    case GDK_E:
    case GDK_e:
      if (string_count == 1)
        string_count++;
      else
        string_count = 0;
      break;
    default:
      string_count = 0;
  }

  return FALSE;
}

void 
zenity_about (ZenityData *data)
{
  GladeXML *glade_dialog = NULL;
  GdkPixbuf *pixbuf;
  GtkWidget *label;
  GtkWidget *image;
  gchar *text;

  glade_dialog = zenity_util_load_glade_file ("zenity_about_dialog");

  if (glade_dialog == NULL) {
    data->exit_code = zenity_util_return_exit_code (ZENITY_ERROR);
    return;
  }

  translator_credits = _("translator_credits");

  glade_xml_signal_autoconnect (glade_dialog);

  dialog = glade_xml_get_widget (glade_dialog, "zenity_about_dialog");

  g_signal_connect (G_OBJECT (dialog), "response",
                    G_CALLBACK (zenity_about_dialog_response), data);
  g_signal_connect (G_OBJECT (dialog), "key_press_event",
                    G_CALLBACK (zenity_zen_wisdom), glade_dialog);

  zenity_util_set_window_icon (dialog, ZENITY_IMAGE_FULLPATH ("zenity.png"));

  image = glade_xml_get_widget (glade_dialog, "zenity_about_image");

  pixbuf = gdk_pixbuf_new_from_file (ZENITY_IMAGE_FULLPATH ("zenity.png"), NULL);
    
  if (pixbuf != NULL) {
    gtk_image_set_from_pixbuf (GTK_IMAGE (image), pixbuf);
    g_object_unref (pixbuf);
  }

  label = glade_xml_get_widget (glade_dialog, "zenity_about_version");
  gtk_label_set_selectable (GTK_LABEL (label), FALSE);
  text = g_strdup_printf ("<span size=\"xx-large\" weight=\"bold\">Zenity %s</span>", VERSION);
  gtk_label_set_markup (GTK_LABEL (label), text);
  g_free (text);

  label = glade_xml_get_widget (glade_dialog, "zenity_about_description");
  gtk_label_set_selectable (GTK_LABEL (label), FALSE);
  gtk_label_set_text (GTK_LABEL (label), _("Display dialog boxes from shell scripts"));

  label = glade_xml_get_widget (glade_dialog, "zenity_about_copyright");
  gtk_label_set_selectable (GTK_LABEL (label), FALSE);
  text = g_strdup_printf ("<span size=\"small\">%s</span>", _("(C) 2003 Sun Microsystems"));
  gtk_label_set_markup (GTK_LABEL (label), text);
  g_free (text);

  if (glade_dialog)
    g_object_unref (glade_dialog);

  gtk_widget_show (dialog);
  gtk_main ();
}

static GtkWidget *
zenity_about_create_label (void)
{
  GtkWidget *label;

  label = gtk_label_new ("");
  gtk_label_set_selectable (GTK_LABEL (label), TRUE);
  gtk_misc_set_alignment (GTK_MISC (label), 0.0, 0.0);
  gtk_misc_set_padding (GTK_MISC (label), 8, 8);

  gtk_label_set_justify (GTK_LABEL (label), GTK_JUSTIFY_LEFT);

  return label;
}

static void
zenity_about_update_author_label (GtkWidget *label)
{
  GString *string;
  gchar *tmp;
  gint i = 0;

  gtk_widget_show (label);

  string = g_string_new ("");

  for (i = 0; author_credits[i] != NULL; i++) {
    tmp = g_markup_escape_text (author_credits[i], -1);
    g_string_append (string, tmp);

    if (author_credits[i+1] != NULL)
      g_string_append (string, "\n");

    g_free (tmp);
  }
  gtk_label_set_markup (GTK_LABEL (label), string->str);
  g_string_free (string, TRUE);
}

static void
zenity_about_update_translator_label (GtkWidget *label)
{
  GString *string;
  gchar *tmp;

  if (strcmp (translator_credits, "translator_credits") == 0) {
    gtk_widget_hide (label);
    return;
  } else {
    gtk_widget_show (label);
  }

  string = g_string_new ("");

  tmp = g_markup_escape_text (translator_credits, -1);
  g_string_append (string, tmp);
  g_free (tmp);

  gtk_label_set_markup (GTK_LABEL (label), string->str);
  g_string_free (string, TRUE);
}

static void
zenity_about_display_credits_dialog (void)
{
  GtkWidget *credits_dialog;
  GtkWidget *label, *notebook, *sw;

  if (cred_dialog != NULL) {
    gtk_window_present (GTK_WINDOW (cred_dialog));
    return;
  }

  credits_dialog = gtk_dialog_new_with_buttons (_("Credits"), 
                                                GTK_WINDOW (dialog), GTK_DIALOG_DESTROY_WITH_PARENT,
                                                GTK_STOCK_OK, GTK_RESPONSE_OK, NULL);

  g_signal_connect (G_OBJECT (credits_dialog), "response",
                    G_CALLBACK (gtk_widget_destroy), credits_dialog);
  g_signal_connect (G_OBJECT (credits_dialog), "destroy",
                    G_CALLBACK (gtk_widget_destroyed), &cred_dialog);

  cred_dialog = credits_dialog;

  gtk_window_set_default_size (GTK_WINDOW (credits_dialog), 360, 260);
  gtk_dialog_set_default_response (GTK_DIALOG (credits_dialog), GTK_RESPONSE_OK);

  notebook = gtk_notebook_new ();
  gtk_container_set_border_width (GTK_CONTAINER (notebook), 8);
  gtk_box_pack_start (GTK_BOX (GTK_DIALOG (credits_dialog)->vbox), notebook, TRUE, TRUE, 0);
       
  if (author_credits != NULL) {
    label = zenity_about_create_label ();
    sw = gtk_scrolled_window_new (NULL, NULL);
    gtk_scrolled_window_set_policy (GTK_SCROLLED_WINDOW (sw), 
                                    GTK_POLICY_AUTOMATIC,
                                    GTK_POLICY_AUTOMATIC);
    gtk_scrolled_window_add_with_viewport (GTK_SCROLLED_WINDOW (sw), label);
    gtk_viewport_set_shadow_type (GTK_VIEWPORT (GTK_BIN (sw)->child), GTK_SHADOW_NONE);
    gtk_notebook_append_page (GTK_NOTEBOOK (notebook), sw,
    gtk_label_new (_("Written by")));
    zenity_about_update_author_label (label);
  }

  if (translator_credits != NULL && strcmp (translator_credits, "translator_credits") != 0) {
    label = zenity_about_create_label ();
    sw = gtk_scrolled_window_new (NULL, NULL);
    gtk_scrolled_window_set_policy (GTK_SCROLLED_WINDOW (sw), 
                                    GTK_POLICY_AUTOMATIC,
                                    GTK_POLICY_AUTOMATIC);
    gtk_scrolled_window_add_with_viewport (GTK_SCROLLED_WINDOW (sw), label);
    gtk_viewport_set_shadow_type (GTK_VIEWPORT (GTK_BIN (sw)->child), GTK_SHADOW_NONE);
    gtk_notebook_append_page (GTK_NOTEBOOK (notebook), sw,
    gtk_label_new (_("Translated by")));
    zenity_about_update_translator_label (label);
  }

  gtk_widget_show_all (credits_dialog);
}

static void
zenity_about_dialog_response (GtkWidget *widget, int response, gpointer data)
{
  ZenityData *zen_data = data;
  GError *error = NULL;

  switch (response) {
    case GTK_RESPONSE_OK:
      zen_data->exit_code = zenity_util_return_exit_code (ZENITY_OK);
      gtk_main_quit ();
      break;

    case GTK_RESPONSE_HELP:
      zenity_util_show_help (NULL);
      break;

    case GTK_RESPONSE_CREDITS:
      zenity_about_display_credits_dialog ();
      break;

    default:
      /* Esc dialog */
      zen_data->exit_code = zenity_util_return_exit_code (ZENITY_ESC);
      break;
  }
}