055. How to display tooltips in GtkTable?

Problem

You want to display tooltips for items in a table as shown below:

How to display tooltips in GtkTable?


Solution


Sample Code

1   
 2   
 3   
 4   
 5   
 6   
 7   
 8   
 9   
 10   
 11   
 12   
 13   
 14   
 15   
 16   
 20   
 21   
 22   
 23   
 24   
 25   
 26   
 27   
 28   
 29   
 30   
 31   
 32   
 33   
 34   
 35   
 36   
 37   
 40   
 41   
 43   
 44   
 45   
 46   
 47   
 48   
 49   
 50   
 51   
 52   
 53   
 54   
 55   
 56   
 57   
 58   
 59   
 60   
 61   
 62   
 63   
<?php
$window = new GtkWindow();
$window->set_size_request(400, 200);
$window->connect_simple('destroy', array('Gtk','main_quit'));

$window->add($vbox = new GtkVBox());

// display title
$title = new GtkLabel("Add tooltips to items in a table");
$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);
$vbox->pack_start($title, 0, 0);
$vbox->pack_start(new GtkLabel(), 0, 0); //add a small gap
$tooltips = new GtkTooltips(); // note 1


$vbox->pack_start($hbox = new GtkHBox());
$hbox->pack_start(new GtkHBox());
$hbox->pack_start($table = new GtkTable(), 0, 0);
$hbox->pack_start(new GtkHBox());

$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);

function display_table($table, $a) {
    global $tooltips; // note 1
    for ($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);

            // add tooltips
            $tooltips->set_tip($eventbox, "this is row $row col $col"); // note 2
        }
    }
}

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

Output

As shown above.
 

Explanation

The above example is based on How to display a 2D array in table - Part 4?.

What's new here:

  1. Note that we declare GtkTooltips in the global level. If you declare it inside the function display_table(), you will find that the tooltip won't be displayed.
  2. Don't forget to place the label in the eventbox before adding the tooltip to the eventbox with GtkTooltips::set_tip().

Add comment

Security code
Refresh