Sample Code 150: How to search for text in GtkTextView - Part 3? |
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Written by kksou
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Wednesday, 24 January 2007 |
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Problem You have set up a search field that allows user to search for text in a GtkTextView in Part 1.
You have also added the "Find Next" button in Part 2.
However, there is a problem with Part 1 and Part 2. If the text found is not visible, it does not scroll to the text. We will fix this in this example as shown below:
Solution
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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("Search for text in GtkTextView - Part 3\n".
"Scroll to the found text");
$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);
$hbox->pack_start($button_search_next = new GtkButton('Next'), 0);
$vbox->pack_start($hbox, 0);
$button_search->connect('clicked', 'on_search_button', $entry);
$button_search_next->connect('clicked', 'on_search_next_button', $entry);
// 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);
$window->show_all();
Gtk::main();
function on_search_button($button, $entry) {
global $view, $buffer;
$search_str = $entry->get_text();
$start_iter = $buffer->get_start_iter();
search($search_str, $start_iter);
}
function on_search_next_button($button, $entry) {
global $view, $buffer;
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Explanation We make use of the code in Part 2.
What's new here:
- Mark the last search position.
- Scroll to the last search position.
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September 27, 2008 9:37am