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by kksou
Sample Code 265: How to display arrays of buttons using GtkButtonBox - Part 1 - with different GtkButtonBoxStyle? |
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Written by kksou
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Thursday, 14 June 2007 |
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Problem Suppose you would like to display an array of buttons in a row.
Note that GtkHButtonBox provides five different types of layouts, as shown by each row below:
- First row: default style
- Second row: evently spread
- Third row: evently spread with the first and last buttons aligned with the left and right edges respectively.
- Fourth row: buttons are packed from the left edge.
- Fifth row: buttons are packed from the right edge.
Solution
- Of course we could achieve this manually by creating a series of GtkButtons and stuff all of them in a GtkHBox.
- However, GtkHButtonBox is more convenient as you can see from the code below.
- The predefined constants for the GtkButtonBoxStyle are
Gtk::BUTTONBOX_DEFAULT_STYLE, Gtk::BUTTONBOX_SPREAD, Gtk::BUTTONBOX_EDGE, Gtk::BUTTONBOX_START and Gtk::BUTTONBOX_END.
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| <?php
$window = new GtkWindow();
$window->set_size_request(420, 240);
$window->connect_simple('destroy', array('Gtk','main_quit'));
$window->add($vbox = new GtkVBox());
// display title
$title = new GtkLabel("Display Arrays of Buttons using GtkButtonBox\n".
"Part 1 - with differnet GtkButtonBoxStyle");
$title->modify_font(new PangoFontDescription("Times New Roman Italic 10"));
$title->modify_fg(Gtk::STATE_NORMAL, GdkColor::parse("#0000ff"));
$title->set_size_request(-1, 40);
$title->set_justify(Gtk::JUSTIFY_CENTER);
$alignment = new GtkAlignment(0.5, 0, 0, 0);
$alignment->add($title);
$vbox->pack_start($alignment, 0);
$vbox->pack_start(new GtkLabel(), 0);
// setup button
$buttons = array('button 1', 'button 2', 'button 3', 'button 4'); // note 1
$buttonbox= setup_hbuttonbox($vbox, $buttons); // note 2
$buttonbox= setup_hbuttonbox($vbox, $buttons, Gtk::BUTTONBOX_SPREAD);
$buttonbox= setup_hbuttonbox($vbox, $buttons, Gtk::BUTTONBOX_EDGE);
$buttonbox= setup_hbuttonbox($vbox, $buttons, Gtk::BUTTONBOX_START);
$buttonbox= setup_hbuttonbox($vbox, $buttons, Gtk::BUTTONBOX_END);
$window->show_all();
Gtk::main();
function setup_hbuttonbox($container, $buttons,
$layout=Gtk::BUTTONBOX_DEFAULT_STYLE) {
$buttonbox = new GtkHButtonBox(); // note 3
$buttonbox->set_layout($layout); // note 4
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Explanation
- The array of buttons.
- Note that we set up five GtkHButtonBox here to show you the five different layouts pre-defined by php-gtk2.
- Create the GtkHButtonBox.
- Set the layout.
- Create the button.
- Register the signal 'clicked' for each button.
- Add the button to the buttonbox.
Note
This example shows GtkHButtonBox. It works the same for GtkVButtonBox.
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April 30, 2008 12:17pm