#include <gtk/gtk.h>
#include <gdk/gdkkeysyms.h>
enum _FORWARD {LEFT, UP, RIGHT, DOWN };
typedef enum _FORWARD Forward;
void move(Forward fw);
void key_press(GtkWidget* widget,GdkEventKey *event,gpointer data);
static gchar* snack_file[4] = {"u.bmp","r.bmp","d.bmp","l.bmp"};
static GtkWidget *fixed;
static GtkWidget *snack_image;
gint i =75;
gint j =75;
Forward forward =UP;
void move (Forward fw){
	switch(fw){
		case UP:
			j=j-5;
			if(j<0)j=400;
			gtk_image_set_from_file(GTK_IMAGE(snack_image),snack_file[0]);
			gtk_fixed_move(GTK_FIXED(fixed),snack_image,i,j);
			break;
		case DOWN:
			 j = j + 5;
		         if ( j > 400 ) j = 0 ;
        		 gtk_image_set_from_file(GTK_IMAGE(snack_image),snack_file[2]);
        		 gtk_fixed_move(GTK_FIXED(fixed),snack_image,i,j);
        		 break;
      		case LEFT :
        		 i = i - 5;
      			 if ( i < 0 ) i = 400 ;
         		gtk_image_set_from_file(GTK_IMAGE(snack_image),snack_file[3]);
         		gtk_fixed_move(GTK_FIXED(fixed),snack_image,i,j);
         		break;
   		case RIGHT :
        		i = i + 5;
       			if ( i > 400 ) i = 0 ;
         		gtk_image_set_from_file(GTK_IMAGE(snack_image),snack_file[1]);
         		gtk_fixed_move(GTK_FIXED(fixed),snack_image,i,j);
         		break;
   		}
}
void key_press (GtkWidget* widget,GdkEventKey *event,gpointer data)
{
   switch(event->keyval)
   {
      case GDK_Up :
         forward = UP;
         move(forward);
         break;
      case GDK_Down :
         forward = DOWN;
         move(forward);
         break;
      case GDK_Left :
         forward = LEFT;
         move(forward);
         break;
      case GDK_Right :
         forward = RIGHT;
         move(forward);
         break;
   }
}
int main(int argc,char *argv[]){
	GtkWidget* window;
	GtkWidget* vbox;
	GtkWidget* bbox;
	GtkWidget* sep;
	GtkWidget* frame;
	GtkWidget* button;
	GtkWidget* 	

	gtk_init(&argc,&argv);
	window=gtk_window_new(GTK_WINDOW_TOPLEVEL);
	gtk_window_set_title(GTK_WINDOW(window),"snack");
	gtk_container_set_border_width(GTK_CONTAINER(window),10);
	g_signal_connect(G_OBJECT(window),"destroy",
		G_CALLBACK(gtk_main_quit),NULL);
	g_signal_connect(G_OBJECT(window),"key_press_event",
		G_CALLBACK(key_press),NULL);//keyboard input
	
	vbox = gtk_vbox_new(FALSE,0);
	gtk_container_add(GTK_CONTAINER(window),vbox);
	
	frame=gtk_frame_new(NULL);
	gtk_frame_set_shadow_type(GTK_FRAME(frame),GTK_SHADOW_ETCHED_OUT);
	
	fixed=gtk_fixed_new();
	gtk_fixed_set_has_window(GTK_FIXED(fixed),TRUE);
	gtk_widget_set_size_request(fixed,400,400);
 
	gtk_container_add(GTK_CONTAINER(frame),fixed);
   	gtk_box_pack_start(GTK_BOX(vbox),frame,TRUE,TRUE,5);
 
   	sep = gtk_hseparator_new();
   	gtk_box_pack_start(GTK_BOX(vbox),sep,FALSE,FALSE,5);
 
   	bbox = gtk_hbutton_box_new();
   	gtk_button_box_set_layout(GTK_BUTTON_BOX(bbox),GTK_BUTTONBOX_END);
   	gtk_box_pack_start(GTK_BOX(vbox),bbox,FALSE,FALSE,5);
 
   	button = gtk_button_new_from_stock(GTK_STOCK_QUIT);
   	g_signal_connect(G_OBJECT(button),"clicked",
      	G_CALLBACK(gtk_main_quit),NULL);
   	gtk_box_pack_end(GTK_BOX(bbox),button,FALSE,FALSE,5);
 
   	snack_image = gtk_image_new_from_file(snack_file[0]);
   	gtk_fixed_put(GTK_FIXED(fixed),snack_image,i,j);
   	gtk_widget_show_all(window);
   	gtk_main();
   	return FALSE ;
}