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Problem In Part 1, we press Tab to move focus out of the textview.
Suppose you still want to be able to insert a tab key if necessary. If you're used to Microsoft Word, the convention used is to press Ctrl-tab to enter a tab. We'll adopt the same convention here, i.e. press Tab to move out of textview, and Ctrl-Tab to insert a tab 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("Press tab to move out of TextView\n".
"Part 2 - Insert Tab");
$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);
$search_box = new GtkEntry();
$hbox->pack_start($search_box, 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', $search_box);
$button_search_next->connect('clicked', 'on_search_next_button', $search_box);
// 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);
$view->connect('key-press-event', 'on_keypress', $search_box);
$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;
$search_str = $entry->get_text();
$last_search_pos = $buffer->get_mark('last_search_pos');
if ($last_search_pos==null) return;
$last_search_iter = $buffer->get_iter_at_mark($last_search_pos);
search($search_str, $last_search_iter);
}
function search($search_str, $start_iter) {
global $view, $buffer;
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Explanation We make use of the code in .
What's new here:
- Is it a ctrl-tab?
- Yes, insert a tab at the current cursor position.
- No, it's just a tab. Move the focus to the search box.
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