484. How to display tooltip on buttons using GtkTooltip - Part 6 - tooltip with GtkTable?

Problem

The new GtkTooltip is so flexible that you can even display a GtkTable in a tooltip as shown below:

Key method used: GtkTooltip::set_custom().

How to display tooltip on buttons using GtkTooltip - Part 6 - tooltip with GtkTable?


Solution

  • We create a vbox and stuff the GtkTable into the vbox.
  • We then set the vbox as the tooltip using the method GtkTooltip::set_custom().

Important Note: This only works for PHP-GTK v2.0 (or PHP-GTK2 compliled with gtk+ v2.12 and above. If you are using an older version, for linux, you may follow the step-by-step instructions to recompile php-gtk2 with gtk+ v2.12. For windows, please refer to How to install php gtk2 on windows?


Sample Code

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<?php
$window = new GtkWindow();
$window->set_title($argv[0]);
$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 tooltip on GtkButton using GtkTooltip\n".
"         Part 6 - display GtkTable in tooltip!");
$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);

$vbox->pack_start($hbox=new GtkHBox(), 0, 0);
create_button($hbox, 'Blue', 'ball_blue48.png');
create_button($hbox, 'Green', 'ball_green48.png');
create_button($hbox, 'Yellow', 'ball_yellow48.png');

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

function create_button($hbox, $button_label, $img) {
    $button = new GtkButton($button_label);
    $button->set_size_request(80, 32);
    $hbox->pack_start($button, 1, 0);
    $button->connect('clicked', "on_button", $button_label);

    $button->set_property('has-tooltip', true); // note 1
    $button->connect('query-tooltip', 'on_tooltip', $img); // note 2
}

function on_button($button, $button_label) {
    echo "You have clicked: $button_label!\n";
}

function on_tooltip($widget, $x, $y, $keyboard_mode, $tooltip, $img_file) {
    $label = $widget->get_label();
    $vbox = new GtkVBox(); // note 3
    $vbox->pack_start(new GtkLabel('table in tooltip!'));

    $table = new GtkTable(); // note 4
    $vbox->pack_start($table); // note 4
    $data = array(
        array('', 'header1', 'header2', 'header3'),
        array('row0', 1, 2, 3),
        array('row1', 4, 5, 6),
        array('row2', 7, 8, 9),
        array('row3', 10, 11, 12),
        array('row4', 13, 14, 15));
    display_table ($table, $data);

    $vbox->show_all(); // note 5
    $tooltip->set_custom($vbox); // note 6
    return true;
}

function display_table($table, $a) {
    for ($row=0; $row<count($a); ++$row) {
        for ($col=0; $col<count($a[$row]); ++$col) {
            $frame = new GtkFrame();
            $eventbox = new GtkEventBox();
            $frame->add($eventbox);
            $eventbox->add(new GtkLabel($a[$row][$col]));
            if ($row==0) {
                $eventbox->modify_bg(Gtk::STATE_NORMAL, GdkColor::parse("#FFCC66"));
            } elseif ($row%2==0) {
                $eventbox->modify_bg(Gtk::STATE_NORMAL, GdkColor::parse("#CCFF99"));
            }
            $table->attach($frame, $col, $col+1, $row, $row+1,
                Gtk::FILL, Gtk::SHRINK, 0, 0);
        }
    }
}

?>

Output

As shown above.

 

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