class ui
{
  String text_to_show = "XXxxXX";
  int duration = 100;
  int duration_animation = 200;
  int transparent = 200;
  int c = 0;
  int fade = 5;
  int fade_c = 0;
  int navigation = 0;
  int sub_navigation = 0;
  int display_height = 50;
  int p=1;
  int m=1;
  int v=1;
  float  y ;
  //int line_height = 50;
  boolean intro;
  boolean outro;
  boolean displaynow=false;

  ui(int duration, int duration_animation)
  {
    this.duration = duration;
    this.duration_animation = duration_animation;
  }

  ///////////////////////////////////////////////////////////////////////
  void display(String i_text_to_show)
  {
 //   if (i_text_to_show != "")
      text_to_show = i_text_to_show;

    if (displaynow == false)
    {
      intro = true;
      outro = false;
      y = -display_height;
    }
    c = duration;
  }

  ///////////////////////////////////////////////////////////////////////
  void render()
  {
    if (intro == true)
    {
      y += (display_height/duration_animation);
      if (y >= 0)
      {
        intro = false;
        displaynow = true;
        y = 0;
      }
    }
    noStroke();
    fill(0,0,0,transparent);
    rect(0,y,width, display_height);
    fill(0,160,0,255);//transparent);
    text(text_to_show, 10, 15+y);//, width-20, line_height);
    if (c-- < 0)
    {
      outro = true;
      displaynow = false;
    }
    if (outro == true)
    {
      y -= (display_height/duration_animation);
      if (y <= -display_height)
      {
        outro = false;
        y = -display_height;
      }
    }

  }

  ///////////////////////////////////////////////////////////////////////
  void choose_para(int i)
  {
    if ((p+i>=0) && (p+i<para.length))
      p +=i;
    pre_display();
    v = 1;
  }

  ///////////////////////////////////////////////////////////////////////
  void choose_modus(int i)
  {
    if (( para[p].modus+i>=1) && ( para[p].modus+i<=6))
      para[p].modus +=i;
    pre_display();
    v = 1;
  }

  ///////////////////////////////////////////////////////////////////////
  void choose_value(int i)
  {
    if ((v+i>=1) && (v+i<=4) && (para[p].value_name(v+i) != "nu"))
      v +=i;
    pre_display(); 
  }

  ///////////////////////////////////////////////////////////////////////
  void pre_display()
  {
    String s = para[p].short_text +"  ::  "+ para[p].modus_name() + char(10);

    for(int j=1;j<=4;j++)
    {
      if (para[p].value_name(j) != "nu")
      {
        if (j==v)
        {
          s +=  "<" + para[p].value_name(j) + "> [" + para[p].value_value(j) + "] ";
        }
        else
          s +=  "<" + para[p].value_name(j) + ">  " + para[p].value_value(j) + "  ";
      }
    }
    display(s);
  }
  ///////////////////////////////////////////////////////////////////////
  void value(float i)
  {
    // println(v + " " + i);
    para[p].new_value(v, float(round(100 * (i + para[p].value_value(v) ))) / 100);
    pre_display();
  }
}