Sample Code 428: How to set up pulldown menu in toolbar? |
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Written by kksou
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Thursday, 31 January 2008 |
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Problem Suppose you want to set up a pull down or drop down menu in the toolbar (e.g. for selection of fonts or font size) as shown below:
Solution
- Pull down menus are created in the toolbar using GtkMenuToolButton.
- However, note that the pulldown menu is not the same as a combobox. Rather, it's implemented using a popup GtkMenu.
Sample Code 1
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| <?php
$window = new GtkWindow();
$window->set_size_request(400, 150);
$window->connect_simple('destroy', array('Gtk','main_quit'));
$window->add($vbox = new GtkVBox());
// define menu definition
$toolbar_definition = array('New', 'Open', 'Save', '<hr>', // note 1
);
setup_toolbar($vbox, $toolbar_definition);
// display title
$title = new GtkLabel("Set up \"pulldown\" menu in Toolbar");
$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(''));
$window->show_all();
Gtk::main();
// process toolbar
function on_toolbar_button($menuitem, $item='') {
$menuitem_type = $menuitem->get_name();
if ($menuitem->get_name() == 'GtkMenuToolButton') {
global $fontsize;
echo "fontsize selected: ".$fontsize->get_text()."\n";
} else {
echo "toolbar clicked: $item\n";
}
}
function setup_popup_menu($menu_definition) {
$menu = new GtkMenu();
foreach($menu_definition as $menuitem_definition) {
if ($menuitem_definition=='<hr>') {
$menu->append(new GtkSeparatorMenuItem());
} else {
$menu_item = new GtkMenuItem($menuitem_definition);
$menu->append($menu_item);
$menu_item->connect('activate', 'on_popup_menu_select');
}
}
$menu->show_all();
return $menu;
}
// process popup menu item selection
function on_popup_menu_select($menu_item) {
$item = $menu_item->child->get_label();
echo "popup menu selected: $item\n";
global $fontsize;
$fontsize->set_text($item);
}
// setup toolbar
function setup_toolbar($vbox, $toolbar_definition) {
$toolbar = new GtkToolBar();
$toolbar->set_property('toolbar-style', Gtk::TOOLBAR_ICONS);
$vbox->pack_start($toolbar, 0, 0);
foreach($toolbar_definition as $item) {
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Explanation
- This is the menu definitions for the standard toolbar items.
- Create a new GtkEntry that will hold the selected font size.
- Create the menutoolbutton. Note that you can pass in any standard GtkWidget for the first parameter. In this example, we used a GtkEntry.
- Add this to the toolbar.
- Set up the "pulldown" menu (it's actually a popup menu).
- Binds the popup menu to this menutoolbutton.
Note
You may want to compare this with the setting up of GtkMenu - How to set up menu and radio menu - Part 1?. The two are very similar.
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