/*

Copyright (C) 2002  Paul Wilkins

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.

*/

/* main.c by Paul Wilkins.
 * This file contains the main program.
 */

#include <stdio.h>
#include <stdlib.h>
#include <locale.h>
#ifdef USE_GNOME
#include <gnome.h>
#endif
#include <gtk/gtk.h>

#include "icon_bitmap"
#include "stack.h"
#include "menu.h"
#include "mode.h"
#include "lcd.h"
#include "undo.h"
#include "buttons.h"
#include "constant.h"

void usage(char *str){
   fprintf(stderr, "Error: %s\n", str);
   fprintf(stderr, "Usage: grpn [-fn font] [-btn-fn font] [-disp-fn font] [-bm basemode]\n");
   fprintf(stderr, "            [-rows n] [-cols n] [-b]\n");
   fprintf(stderr, "   -b:        Don't draw the buttons.\n");
   fprintf(stderr, "   -rows:     Display (a minimum of) \"n\" rows.\n");
   fprintf(stderr, "   -cols:     Display (a minimum of) \"n\" columns.\n");
   fprintf(stderr, "   -btn-fn:   Use \"font\" for the buttons and menu-bar.\n");
   fprintf(stderr, "   -disp-fn:  Use \"font\" for the main display.\n");
   fprintf(stderr, "   -fn:       Specifies both -btn-fn and -disp-fn.\n");
   fprintf(stderr, "   -bm:        basemode: dec, eng, bin, oct or hex.\n");
}

   GtkWidget *main_w;
main(int argc, char *argv[])
{
   int n;
   int rows, cols;
   int drawButtons;
   char *btn_font, *disp_font;
   /* GtkWidget *main_w; */
   GtkWidget *vbox;
   GtkWidget *menu;
   GtkWidget *mdisp;
   GtkWidget *lcd;
   GtkWidget *btns;
   GdkFont *new_font;
   GtkStyle *default_style, *new_style;
   GdkBitmap *icon_bitmap;
#ifdef USE_GNOME
   GnomeAppBar *appbar;
#endif

   setlocale(LC_ALL, "C");
#ifdef USE_GNOME
   gnome_init("grpn", "1.0", argc, argv);
   gnome_app_new("grpn", "grpn");
#else
   /* initialize gtk */
   gtk_init(&argc, &argv);
#endif

   /* initial values */
   drawButtons = 1;
   rows = 8;
   cols = 30;
   btn_font = disp_font = NULL;

   /* process command line args */
   n = 1;
   while(n < argc){
      if(0 == strcmp("-fn", argv[n])){
         n++;
         if(n >= argc){
            usage("Missing required argument for -fn.");
            exit(0);
         }
         btn_font = disp_font = argv[n];
      } else if(0 == strcmp("-btn-fn", argv[n])){
         n++;
         if(n >= argc){
            usage("Missing required argument for -btn-fn.");
            exit(0);
         }
         btn_font = argv[n];
      } else if(0 == strcmp("-disp-fn", argv[n])){
         n++;
         if(n >= argc){
            usage("Missing required argument for -disp-fn.");
            exit(0);
         }
         disp_font = argv[n];
      } else if(0 == strcmp("-rows", argv[n])){
         n++;
         if(n >= argc){
            usage("Missing required argument for -rows.");
            exit(0);
         }
         if(1 != sscanf(argv[n], "%d", &rows)){
            usage("Unable to read number or rows.");
            exit(0);
         }
      } else if(0 == strcmp("-cols", argv[n])){
         n++;
         if(n >= argc){
            usage("Missing required argument for -cols.");
            exit(0);
         }
         if(1 != sscanf(argv[n], "%d", &cols)){
            usage("Unable to read number or cols.");
            exit(0);
         }
      } else if(0 == strcmp("-b", argv[n])){
         drawButtons = 0;
      } else if(0 == strcmp("-bm", argv[n])){
         n++;
         if(n >= argc){
            usage("Missing required argument for -m.");
            exit(0);
         }
         if (0 == strcmp("dec", argv[n])){
             setBaseMode(DECIMAL);
	 } else if (0 == strcmp("eng", argv[n])){
             setBaseMode(DECIMAL_ENG);
	 } else if (0 == strcmp("bin", argv[n])){
             setBaseMode(BINARY);
	 } else if (0 == strcmp("oct", argv[n])){
             setBaseMode(OCTAL);
	 } else if (0 == strcmp("hex", argv[n])){
             setBaseMode(HEXADECIMAL);
	 } else {
             usage("Specify dec, eng, bin, oct or hex for -m.");
             exit(0);
         }
      } else {
         usage("Unknown Argument.");
         exit(0);
      }
      n++;
   }

   /* set up any constants we may use */
   setup_constant();

   /* initialize the undo system */
   initUndoSystem();

   /* setup the stack */
   if(0 == setup_stack()){
      fprintf(stderr, "Error: Could not initalize data structures.\n");
      exit(0);
   }

   /* set the font if told */
   if(btn_font != NULL){
      default_style = gtk_widget_get_default_style();
      if(NULL == (new_font = gdk_font_load(btn_font))){
         fprintf(stderr, "Unable to load font %s.\n", btn_font);
         exit(0);
      }
      new_style = gtk_style_copy(default_style);
      new_style->font_desc = new_font;
/* BDD - No longer in Gtk2.x */
/*      gtk_widget_set_default_style(new_style); */
   }
   

#ifdef USE_GNOME
   main_w = gnome_app_new("grpn", "grpn");
   setup_menu(main_w);

   appbar = GNOME_APPBAR(gnome_appbar_new(FALSE, FALSE, FALSE));
   gnome_app_set_statusbar(GNOME_APP(main_w), GTK_WIDGET(appbar));

   /*create the box that everyone goes in */
   vbox = gtk_vbox_new(FALSE, 0);
   gnome_app_set_contents(GNOME_APP(main_w), vbox);
   gtk_widget_show(vbox);

#else
   /* the main window contains the work area and the menubar */
   main_w = gtk_window_new(GTK_WINDOW_TOPLEVEL);
   gtk_widget_set_name(main_w, "grpn");

   /*create the box that everyone goes in */
   vbox = gtk_vbox_new(FALSE, 0);
   gtk_container_add(GTK_CONTAINER(main_w), vbox);
   gtk_widget_show(vbox);

   /* set up the menu bar */
   menu = setup_menu(vbox);
#endif

   /* handle window manager close */
   gtk_signal_connect(GTK_OBJECT(main_w), "delete_event",
      GTK_SIGNAL_FUNC(delete_event), NULL);
   gtk_signal_connect(GTK_OBJECT(main_w), "destroy",
      GTK_SIGNAL_FUNC(destroy), NULL);

   /* create the varrious subsystems */
   mdisp = setupModeDisplay(vbox);
   if(drawButtons) btns = setupButtons(vbox);
   lcd = setupLCD(vbox, rows, cols, disp_font);

   /* Create pixmap of depth 1 (bitmap) for icon */
   gtk_widget_realize(main_w);
   icon_bitmap = gdk_bitmap_create_from_data(main_w->window,
      icon_bitmap_bits, icon_bitmap_width, icon_bitmap_height);
   gdk_window_set_icon(main_w->window, NULL, icon_bitmap, NULL);

   gtk_widget_show(main_w);

   gtk_main();

}
