php-gtk2 Cookbook: How to display options of GtkComboBox in a grid without use of set_column_span_column?

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Sample Code 372: How to display options of GtkComboBox in a grid without use of set_column_span_column?

Written by kksou

Wednesday, 21 November 2007

Problem

This article supplements the article How to display options of GtkComboBox in a grid with use of set_column_span_column?

This example shows how the combobox will look like if we did not use the method GtkCombobox::set_column_span_column() as shown below. Not too neat, isn't it?

How to display options of GtkComboBox in a grid without use of set_column_span_column?

Solution

Please refer to How to display options of GtkComboBox in a grid with use of set_column_span_column?

Sample Code

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<?php
$window = new GtkWindow();
$window->connect_simple('destroy', array( 'Gtk', 'main_quit'));
$window->set_size_request(400,150);
$window->add($vbox = new GtkVBox());

// display title
$title = new GtkLabel("Display options of GtkComboBox in a grid\n".
"without use of set_column_span_column()");
$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);
$vbox->pack_start($title, 0, 0);

$list = array('1', '2', '3', '4', '5', '6', // note 1
'7', '8', '9', '10', '11', '12',
'ABCDEFG', 'HIJKLMNOPQR',
'1001', '1002', '1003',
);

$vbox->pack_start($hbox=new GtkHBox(), 0, 0);
$hbox->pack_start(new GtkLabel('Select: '), 0, 0);

// setup the combobox
$combobox = new GtkComboBox();
if (defined("GObject::TYPE_STRING")) {
    $model = new GtkListStore(GObject::TYPE_STRING); // note 2
} else {
    $model = new GtkListStore(Gtk::TYPE_STRING); // note 2
}
$cellRenderer = new GtkCellRendererText();
$combobox->pack_start($cellRenderer);
$combobox->set_attributes($cellRenderer, 'text', 0);

// populate the model
foreach($list as $choice) {
    $model->append(array($choice)); // note 3
}

// Set up the combobox
$combobox->set_model($model);
//$combobox->set_column_span_column(1);
$combobox->set_wrap_width(6); // note 4
$combobox->connect('changed', 'on_change');
$hbox->pack_start($combobox, 0, 0);
$window->show_all();
Gtk::main();

function on_change($combobox) {
    $model = $combobox->get_model();
    $selection = $model->get_value($combobox->get_active_iter(), 0);
    echo "You have selected: $selection!\n";
}

?>

Explanation

We make use of the code from How to setup and process GtkComboBox? to set up the combobox.

What's new here:

These are the options that will appear in the combobox.
We use one column here to store the option.
Populate the options.
Sets the number of columns in a row to be 6.