Sample Code 148: How to search for text in GtkTextView - Part 1? |
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Written by kksou
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Saturday, 20 January 2007 |
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Problem You want to provide a search field that allow user to search for text in a GtkTextView as shown below:
Solution
Sample Code 1
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$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("Search for text in GtkTextView - Part 1\n");
$title->modify_font(new PangoFontDescription("Times New Roman Italic 10"));
$title->modify_fg(Gtk::STATE_NORMAL, GdkColor::parse("#0000ff"));
$title->set_size_request(-1, 60);
$title->set_justify(Gtk::JUSTIFY_CENTER);
$alignment = new GtkAlignment(0.5, 0, 0, 0);
$alignment->add($title);
$vbox->pack_start($alignment, 0, 0);
$vbox->pack_start(new GtkLabel(), 0, 0);
$hbox = new GtkHBox();
$hbox->pack_start(new GtkLabel("Search string: "), 0);
$hbox->pack_start($entry = new GtkEntry(), 0);
$hbox->pack_start($button_search = new GtkButton('Search'), 0);
$vbox->pack_start($hbox, 0);
$button_search->connect('clicked', 'on_search_button', $entry); // note 1
// Create a new buffer and a new view to show the buffer.
$buffer = new GtkTextBuffer();
$view = new GtkTextView();
$view->set_buffer($buffer);
$view->modify_font(new PangoFontDescription("Arial 12"));
$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);
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Explanation
- Set up the search button.
- Get the start iter.
- The iter that will store the start of match.
- The iter that will store the end of match.
- Search for the text.
- Highlight the text if the text is found.
Note
In the next article, we will add the "Find Next" button.
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