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by kksou
Sample Code 496: How to display a text file in GtkTextView with drag and drop? |
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Written by kksou
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Friday, 16 May 2008 |
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Problem You want to allow users to display a text file in a GtkTextView with drag-and-drop as shown below:
Solution
- Read the entire file into a string with
file_get_contents($filename).
- Insert the text into the text buffer with GtkTextbuffer::set_text().
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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("Display a text file in GtkTextView with drag-and-drop");
$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.
$buffer = new GtkTextBuffer();
$view = new GtkTextView();
$view->set_buffer($buffer);
$view->set_wrap_mode(Gtk::WRAP_WORD);
$view->drag_dest_set(Gtk::DEST_DEFAULT_ALL, // note 1
array( array( 'text/uri-list', 0, 0)), Gdk::ACTION_COPY);
$view->connect('drag-data-received', 'on_drop', $view); // note 1
$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();
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Explanation
- Set up the text view so that it allows users to drop a text file onto it.
- Read in the entire file.
- Insert the text into the text buffer.
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