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().
Sample Code
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 20 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 46 47 48 49 50 51 52 | <?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); $window->show_all(); Gtk::main(); // process drop function on_drop($widget, $context, $x, $y, $data, $info, $time, $view) { $uri_list = explode("\n",$data->data); $filename = $uri_list[0]; $filename = str_replace("file:///", "", $filename); $filename = str_replace("\r", "", $filename); $contents = file_get_contents($filename); // note 2 $buffer = $view->get_buffer(); $buffer->set_text($contents); // note 3 } ?> |
Output
As shown above.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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