/* Chrysalide - Outil d'analyse de fichiers binaires
 * about.h - boîte de dialogue d'information sur le programme
 *
 * Copyright (C) 2015-2017 Cyrille Bagard
 *
 *  This file is part of Chrysalide.
 *
 *  Chrysalide 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 3 of the License, or
 *  (at your option) any later version.
 *
 *  Chrysalide 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 Foobar.  If not, see <http://www.gnu.org/licenses/>.
 */


#include "about.h"


#include <math.h>
#include <stdio.h>
#include <gdk/gdkkeysyms.h>


#include <config.h>
#include <i18n.h>


#include "../../gtkext/easygtk.h"
#include "../../gtkext/support.h"



/* Réagit à l'appui d'une touche sur la fenêtre 'A propos'. */
static gboolean close_about_window_on_escape(GtkWidget *, GdkEventKey *, gpointer);



/******************************************************************************
*                                                                             *
*  Paramètres  : parent = fenêtre parente à surpasser.                        *
*                                                                             *
*  Description : Construit la fenêtre d'informations sur le logiciel.         *
*                                                                             *
*  Retour      : Adresse de la fenêtre mise en place.                         *
*                                                                             *
*  Remarques   : -                                                            *
*                                                                             *
******************************************************************************/

GtkWidget *create_about_dialog(GtkWindow *parent)
{
    GtkWidget *result;                      /* Fenêtre à renvoyer          */
    GdkRGBA color;                          /* Couleur de fond noire       */
    GtkWidget *fixed;                       /* Support global              */
    gchar *filename;                        /* Chemin d'accès au fichier   */
    GtkWidget *image;                       /* Image chargée               */
    unsigned int revision;                  /* Numéro de révision          */
    unsigned int max;                       /* Nbre. de boucles à effectuer*/
    unsigned int i;                         /* Boucle de parcours          */
    unsigned int level;                     /* Unité la plus importante    */
    char buffer[16];                        /* Nom d'image à forger        */
    GtkWidget *label;                       /* Etiquette inférieure        */

    result = gtk_window_new(GTK_WINDOW_TOPLEVEL);
    gtk_widget_set_size_request(result, 350, 430);
    gtk_container_set_border_width(GTK_CONTAINER(result), 0);
    gtk_window_set_title(GTK_WINDOW(result), _("About"));
    gtk_window_set_transient_for(GTK_WINDOW(result), parent);
    gtk_window_set_default_size(GTK_WINDOW(result), 350, 430);
    gtk_window_set_type_hint(GTK_WINDOW(result), GDK_WINDOW_TYPE_HINT_DIALOG);

    g_signal_connect(result, "key_press_event", G_CALLBACK(close_about_window_on_escape), NULL);

    gdk_rgba_parse(&color, "black");
    gtk_widget_override_background_color(GTK_WIDGET(result), GTK_STATE_FLAG_NORMAL, &color);

    fixed = gtk_fixed_new();
    gtk_widget_show(fixed);
    gtk_container_add(GTK_CONTAINER(result), fixed);

    /* Images principales */

    filename = find_pixmap_file("chrysalide-full.png");
    image = qck_create_image(NULL, NULL, filename);
    gtk_fixed_put(GTK_FIXED(fixed), image, 10, 10);
    gtk_widget_set_size_request(image, 330, 300);

    filename = find_pixmap_file("chrysalide_text.png");
    image = qck_create_image(NULL, NULL, filename);
    gtk_fixed_put(GTK_FIXED(fixed), image, 48, 324);
    gtk_widget_set_size_request(image, 253, 42);

    /* Numéro de révision */

    filename = find_pixmap_file("revision.png");
    image = qck_create_image(NULL, NULL, filename);
    gtk_fixed_put(GTK_FIXED(fixed), image, 149, 360);
    gtk_widget_set_size_request(image, 14, 18);

    revision = REVISION;
    max = log(revision) / log(10);

    for (i = 0; i <= max; i++)
    {
        level = pow(10, max - i);

        snprintf(buffer, 16, "revision_%u.png", revision / level);

        filename = find_pixmap_file(buffer);
        image = qck_create_image(NULL, NULL, filename);
        gtk_fixed_put(GTK_FIXED(fixed), image, 163 + i * 14, 360);
        gtk_widget_set_size_request(image, 14, 18);

        revision %= level;

    }

    /* Copyright */

    label = qck_create_label(NULL, NULL, "<span fgcolor='white'>Copyright (C) 2008-2017 Cyrille Bagard</span>");
    gtk_widget_set_halign(label, GTK_ALIGN_CENTER);
    gtk_label_set_use_markup(GTK_LABEL(label), TRUE);
    gtk_fixed_put(GTK_FIXED(fixed), label, 0, 400);
    gtk_widget_set_size_request(label, 350, 20);

    return result;

}


/******************************************************************************
*                                                                             *
*  Paramètres  : window = fenêtre visée par la procédure.                     *
*                event  = informations liées à l'événement.                   *
*                dummy  = donnée non utilisée ici.                            *
*                                                                             *
*  Description : Réagit à l'appui d'une touche sur la fenêtre 'A propos'.     *
*                                                                             *
*  Retour      : TRUE pour poursuivre la propagation, FALSE autrement.        *
*                                                                             *
*  Remarques   : -                                                            *
*                                                                             *
******************************************************************************/

static gboolean close_about_window_on_escape(GtkWidget *widget, GdkEventKey *event, gpointer dummy)
{
    gboolean result;                        /* Ordre à retourner           */

    if (event->keyval == GDK_KEY_Escape)
    {
        gtk_widget_destroy(widget);
        result = TRUE;
    }
    else result = FALSE;

    return result;

}