A.16. Text

  
function text_insert_random (text)
{
  local i, c;
  for (i = 0; i < 10; i++)
    {
      c = int('A') + (random() * 24);
      text.set_point(1);
      text.set_point(random() * text.get_length());
      text.insert(nil, nil, nil, char(c), 1);
    }
}


function make_color(r, g, b)
{
  local color = new(GdkColor);
  color.red = r;
  color.green = g;
  color.blue = b;
  color;
}


function create_text ()
{
  local box1, box2, hbox, button, check, separator, scrolled_window,
  text, font, infile, text_colors;
  
  win_text = new (GtkWindow);
  win_text.signal ("destroy", #win_text = nil);
  win_text.name = "text window";
  win_text.set_policy(TRUE, TRUE, FALSE);
  win_text.set_usize(500, 500);
  win_text.title = "test";
  win_text.border_width = 0;
  
  box1 = new(GtkVBox);
  win_text.add(box1);
  box1.show();
  
  box2 = new(GtkVBox);
  box2.spacing = 10;
  box2.border_width = 10;
  box1.pack_start(box2, TRUE, TRUE, 0);
  box2.show();
  
  scrolled_window = new(GtkScrolledWindow);
  box2.pack_start(scrolled_window, TRUE, TRUE, 0);
  scrolled_window.set_policy(GTK_POLICY_NEVER, GTK_POLICY_ALWAYS);
  scrolled_window.show();
  
  text = new(GtkText);
  text.set_editable(TRUE);
  scrolled_window.add(text);
  text.grab_focus();
  text.show();
  
  font = gdk_font_load ("-adobe-courier-medium-r-normal--*-120-*-*-*-*-*-*");
  
  text.freeze();

  
  /* Create and insert the colored foreground/background display text. */
  
  text_colors = array(cons("black", make_color(0,0,0)),
		      cons("white", make_color(0xffff,0xffff,0xffff)),
		      cons("red", make_color(0xffff,0,0)),
		      cons("green", make_color(0, 0xffff,0)),
		      cons("blue", make_color(0, 0, 0xffff)),
		      cons("cyan", make_color(0, 0xffff, 0xffff)),
		      cons("magenta", make_color(0xffff, 0, 0xffff)),
		      cons("yellow", make_color(0xffff, 0xffff, 0)));
  
  with i in text_colors do
    {
      text.insert(font, nil, nil, car(i), -1);
      text.insert(font, nil, nil, "\t", -1);
      
      with j in text_colors do
	text.insert(font, cdr(j), cdr(i), "XYZ", -1);
      
      text.insert(font, nil, nil, "\n", -1);
    }
  
  
  /* Read and insert the sample text. */
  
  if ((infile = open("gtkenums.h", "r")) ||
      (infile = open("../gtkenums.h", "r")))
    {
      line = nil;
      while(line != _eof_)
	{
	  line = read_line(infile);
	  line_ret = string(line,"\n");
	  if (line_ret != "Unexpected end of file\n")
	    text.insert(font, nil, nil, line_ret, -1);
	}
    }
  
  
  text.thaw();
  
  hbox = new(GtkHButtonBox);
  box2.pack_start(hbox, FALSE, FALSE, 0);
  hbox.show();
  
  check = new(GtkCheckButton);
  check.label = "Editable";
  hbox.pack_start(check, FALSE, FALSE, 0);
  check.signal("toggled", `(@text).set_editable((@check).get_active()));
  check.set_active(TRUE);
  check.show();
  
  check = new(GtkCheckButton);
  check.label = "Wrap Words";
  hbox.pack_start(check, FALSE, FALSE, 0);
  check.signal("toggled", `(@text).set_word_wrap((@check).get_active()));
  check.set_active(FALSE);
  check.show();
  
  separator = new(GtkHSeparator);
  box1.pack_start(separator, FALSE, TRUE, 0);
  separator.show();
  
  box2 = new(GtkVBox);
  box2.spacing = 10;
  box2.border_width = 10;
  box1.pack_start(box2, FALSE, TRUE, 0);
  box2.show();
  
  button = new(GtkButton);
  button.label = "insert random";
  button.signal("clicked", `text_insert_random(@text));
  box2.pack_start(button, TRUE, TRUE, 0);
  button.show();
  
  button = new (GtkButton);
  button.label = "close";
  button.signal ("clicked", `(@win_text).destroy());
  box2.pack_start (button, TRUE, TRUE, 0);
  button.can_default = TRUE;
  button.grab_default();

  win_text.show_all();
  win_text;
}

function main ()
{
  local window, win_text;
  TRUE=1;
  FALSE=0;
  window = create_text ();
  window.signal ("destroy", #exit_program(0));
  init_ipc("text", "textq");
  gtk_main ();
}