/*  dvdisaster: Additional error correction for optical media.
 *  Copyright (C) 2004-2010 Carsten Gnoerlich.
 *  Project home page: http://www.dvdisaster.com
 *  Email: carsten@dvdisaster.com  -or-  cgnoerlich@fsfe.org
 *
 *  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,
 *  or direct your browser at http://www.gnu.org.
 */

#include "dvdisaster.h"

/***
 *** Creates the welcome window shown after startup.
 ***/

/*
 * The welcome window is shown first,
 * so it is convenient to initialize our GC when it is exposed.
 */

static void toggle_cb(GtkWidget *widget, gpointer data)
{  int state  = gtk_toggle_button_get_active(GTK_TOGGLE_BUTTON(widget));

   Closure->welcomeMessage = state;
}

static gboolean expose_cb(GtkWidget *widget, GdkEventExpose *event, gpointer data)
{  GtkWidget *box = (GtkWidget*)data;

   if(!Closure->drawGC)
   {  GdkColor *bg = &widget->style->bg[0];

      GdkColormap *cmap = gdk_colormap_get_system();
      Closure->drawGC = gdk_gc_new(widget->window);

      memcpy(Closure->background, bg, sizeof(GdkColor));

      gdk_colormap_alloc_color(cmap, Closure->foreground, FALSE, TRUE);

      Closure->grid->red = bg->red-bg->red/8;
      Closure->grid->green = bg->green-bg->green/8;
      Closure->grid->blue = bg->blue-bg->blue/8;
      gdk_colormap_alloc_color(cmap, Closure->grid, FALSE, TRUE);

      /* This can't be done at closure.c */

      gdk_colormap_alloc_color(cmap, Closure->redText, FALSE, TRUE);
      gdk_colormap_alloc_color(cmap, Closure->greenText, FALSE, TRUE);
      gdk_colormap_alloc_color(cmap, Closure->barColor, FALSE, TRUE);
      gdk_colormap_alloc_color(cmap, Closure->logColor, FALSE, TRUE);
      gdk_colormap_alloc_color(cmap, Closure->curveColor, FALSE, TRUE);
      gdk_colormap_alloc_color(cmap, Closure->redSector, FALSE, TRUE);
      gdk_colormap_alloc_color(cmap, Closure->yellowSector, FALSE, TRUE);
      gdk_colormap_alloc_color(cmap, Closure->greenSector, FALSE, TRUE);
      gdk_colormap_alloc_color(cmap, Closure->blueSector, FALSE, TRUE);
      gdk_colormap_alloc_color(cmap, Closure->whiteSector, FALSE, TRUE);
      gdk_colormap_alloc_color(cmap, Closure->darkSector, FALSE, TRUE);

      /* Dirty trick for indenting the list:
	 draw an invisible dash before each indented line */

      if(Closure->welcomeMessage || Closure->version != Closure->dotFileVersion)
      {  GtkWidget *button;

	 Closure->invisibleDash = g_strdup_printf("<span color=\"#%02x%02x%02x\">-</span>",
						  bg->red>>8, bg->green>>8, bg->blue>>8);
	 AboutText(box, _("- Development frameworks for Windows and OS X updated.\n"
			  "- Experimental multithreaded codec (RS03).\n\n"
			  "<span %s>"
			  "<b>Warning:</b>\n"
			  "This version is experimental and for testing only.\n"
			  "It may contain bugs even in functions which worked\n"
			  "in previous versions.\n\n"
			  "RS03 has not reached full recovery capacity yet and\n"
			  "is not recognized by linear and adaptive reading.</span>"),
		   Closure->redMarkup
		   );

	 gtk_box_pack_start(GTK_BOX(box), gtk_hseparator_new(), FALSE, FALSE, 10);

	 button = gtk_check_button_new_with_label(_utf("Show this message again"));
	 gtk_toggle_button_set_active(GTK_TOGGLE_BUTTON(button), Closure->welcomeMessage);
	 g_signal_connect(G_OBJECT(button), "toggled", G_CALLBACK(toggle_cb), NULL);
	 gtk_box_pack_start(GTK_BOX(box), button, FALSE, FALSE, 0);

	 gtk_widget_show_all(box);
      }
   }

   Closure->dotFileVersion = Closure->version;

   return FALSE;
}

/*
 * Create the window
 */

void CreateWelcomePage(GtkNotebook *notebook)
{  GtkWidget *box,*align,*ignore;
   int show_msg;

   show_msg = Closure->welcomeMessage || Closure->version != Closure->dotFileVersion;

   align = gtk_alignment_new(0.5, 0.5, 0.0, 0.0);
   ignore = gtk_label_new("welcome_tab");
   box = show_msg ? gtk_vbox_new(FALSE, 0) : gtk_hbox_new(FALSE, 10);
   g_signal_connect(G_OBJECT(align), "expose_event", G_CALLBACK(expose_cb), box);
   gtk_notebook_append_page(notebook, align, ignore);

   gtk_container_add(GTK_CONTAINER(align), box);

   if(!show_msg)
   {  GtkWidget *widget;  
     return;
      widget  = gtk_image_new_from_stock("dvdisaster-create", GTK_ICON_SIZE_LARGE_TOOLBAR);
      gtk_box_pack_start(GTK_BOX(box), widget, FALSE, FALSE, 0);

      AboutText(box, "<span weight=\"bold\" size=\"xx-large\">dvdisaster</span>");
      return;
   }

   AboutText(box, _("<span weight=\"bold\" size=\"xx-large\">Welcome to dvdisaster!</span>"));

   AboutText(box, _("\ndvdisaster creates error correction data to protect\n"
		    "CD and DVD media against data loss.\n"));

   AboutTextWithLink(box, _("Please see the manual for [typical uses] of dvdisaster.\n\n"), 
		     "howtos.html");

   AboutText(box, _("<i>New in this Version:</i>"));

   /* actual list is generated in the expose event handler */

}