413. How to bold a menu items - Part 1?

Problem

Suppose you would like to bold a menu item as shown below. Notice that menu items Test2 and Test4 are in bold.

How to bold a menu items - Part 1?


Solution

  • To bold a menu item, you need to grab hold of the pointer to the GtkLabel of the GtkMenuItem.
  • Once you have the pointer, you can make it bold with GtkLabel::set_markup_with_mnemonic()

Sample Code

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<?php
$window = new GtkWindow();
$window->set_title($argv[0]);
$window->set_size_request(400, 150);
$window->connect_simple('destroy', array('Gtk','main_quit'));
$window->add($vbox = new GtkVBox());
$accel_group = new GtkAccelGroup(); // create a new accelerator
$window->add_accel_group($accel_group); // attach it to the window

// define menu definition
$menu_definition = array(
    '_File' => array('_New|N', '_Open|O', '_Close|C', '<hr>',
                    '_Save|S', 'Save _As','<hr>', '_Quit'),
    '_Edit' => array('Cut|X', 'Copy|C', '_Paste|V', '<hr>',
                    'Select All|A', '<hr>', '_Undo|Z'),
    '_Test' => array('Test_1|1', 'Test_2|2', 'Test_3|3', '<hr>',
                array('Selection 1', 'Selection 2', 'Selection 3'),
                '<hr>', 'Test_4|4'),
);

$color_map = array('Red' => '#FF3300',
    'Green' => '#66FF66',
    'Blue' => '#6666FF',
    'Yellow' => '#FFFF33');
setup_menu($vbox, $menu_definition);

// display title
$title = new GtkLabel("Bold a menu item - Part 1");
$title->modify_font(new PangoFontDescription("Times New Roman Italic 10"));
$title->modify_fg(Gtk::STATE_NORMAL, GdkColor::parse("#0000ff"));
$vbox->pack_start($title);
$vbox->pack_start(new GtkLabel(''));

$window->show_all();
Gtk::main();

// setup menu
function setup_menu($vbox, $menus) {
    global $accel_group;
    $menubar = new GtkMenuBar();
    $vbox->pack_start($menubar, 0, 0);
    foreach($menus as $toplevel => $sublevels) {
        $menubar->append($top_menu = new GtkMenuItem($toplevel));
        $menu = new GtkMenu();
        $top_menu->set_submenu($menu);
        foreach($sublevels as $submenu) {
            if (strpos("$submenu", '|') === false) {
                $accel_key = '';
            } else {
                list($submenu, $accel_key) = explode('|', $submenu);
            }

            if (is_array($submenu)) {
                $i=0;
                $radio[0] = null;
                foreach($submenu as $radio_item) {
                    $radio[$i] = new GtkRadioMenuItem($radio[0], $radio_item);
                    $radio[$i]->connect('toggled', "on_toggle");
                    $menu->append($radio[$i]);
                    ++$i;
                }
                $radio[0]->set_active(1); // select the first item
            } else {
                if ($submenu=='<hr>') {
                    $menu->append(new GtkSeparatorMenuItem());
                } else {
                    $submenu2 = str_replace('_', '', $submenu);
                    $submenu2 = str_replace(' ', '_', $submenu2);
                    $stock_image_name = 'Gtk::STOCK_'.strtoupper($submenu2);
                    if (defined($stock_image_name)) {
                        $menu_item = new GtkImageMenuItem(
                                        constant($stock_image_name));
                    } else {
                        if ($submenu == 'Test_2' ||
                            $submenu == 'Test_4') {
                            $menu_item = setup_bold_menuitem($submenu); // note 1
                        } else {
                            $menu_item = new GtkMenuItem($submenu);
                        }
                    }
                    if ($accel_key!='') {
                        $menu_item->add_accelerator("activate", $accel_group,
                        ord($accel_key), Gdk::CONTROL_MASK, 1);
                    }

                    $menu->append($menu_item);
                    $menu_item->connect('activate', 'on_menu_select');
                }
            }
        }
    }
}

// setup menuitem with background color
function setup_bold_menuitem($menuitem_label) {
    $menu_item = new GtkMenuItem($menuitem_label);
    $label = $menu_item->child; // note 2
    $label->set_markup_with_mnemonic("<b>$menuitem_label</b>"); // note 3
    return $menu_item;
}

// process radio menu selection
function on_toggle($radio) {
    $label = $radio->child->get_label();
    $active = $radio->get_active();
    echo("radio menu selected: $label\n");
}

// process menu item selection
function on_menu_select($menu_item) {
    if (method_exists($menu_item->child, 'get_label')) {
        $item = $menu_item->child->get_label();
        $item = strip_tags($item); // note 4
        echo "menu selected: $item\n";
        if ($item=='_Quit') Gtk::main_quit();
    }
}

?>

Output

As shown above.
 

Explanation

The above makes use of the code from How to set up menu and radio menu - Part 3 - add accelerators?

What's new here:

  1. Set up bold menu items.
  2. Get the pointer to the GtkLabel of the menu item.
  3. Make it bold!
  4. Remove any pango markup tags from the menu item label.

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