495. How to read a text file into GtkTextView?

Problem

You want to read a text file into a GtkTextView as shown below:

How to read a text file into GtkTextView?


Solution

  • Read the entire file into a string with file_get_contents($filename).
  • Insert the text into the text buffer with GtkTextbuffer::set_text().

Sample Code

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<?php
$window = new GtkWindow();
$window->set_size_request(400, 240);
$window->connect_simple('destroy', array('Gtk','main_quit'));
$window->add($vbox = new GtkVBox());

// display title
$title = new GtkLabel("Read a text file into GtkTextView");
$title->modify_font(new PangoFontDescription("Times New Roman Italic 10"));
$title->modify_fg(Gtk::STATE_NORMAL, GdkColor::parse("#0000ff"));
$title->set_size_request(-1, 40);
$vbox->pack_start($title, 0, 0);
$vbox->pack_start(new GtkLabel(), 0, 0);

// Create a new buffer and a new view to show the buffer.
$filename = $argv[0]; // note 1
$contents = file_get_contents($filename); // note 2
$buffer = new GtkTextBuffer(); // note 3
$buffer->set_text($contents); // note 4
$view = new GtkTextView(); // note 5
$view->set_buffer($buffer); // note 6
$view->set_wrap_mode(Gtk::WRAP_WORD);

$scrolled_win = new GtkScrolledWindow();
$scrolled_win->set_policy( Gtk::POLICY_AUTOMATIC, Gtk::POLICY_AUTOMATIC);
$vbox->pack_start($scrolled_win);

$scrolled_win->add($view);

$window->show_all();
Gtk::main();

?>

Output

As shown above.
 

Explanation

  1. Set your filename in the variable $filename. Here I just use the filename of the script you are running.
  2. Read in the entire file.
  3. Create a new text buffer.
  4. Insert the text into the text buffer.
  5. Create a new text view.
  6. Binds the text buffer to the text view.

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