Sample Code 520: How to get the position of a label or eventbox? |
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Written by kksou
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Tuesday, 12 August 2008 |
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Problem This is in response to Neil's post titled "Get co-ordnates".
He would like to find the position (x,y co-ordinates) of an eventbox, or a label as shown below:
Solution
Note: I find that it only works when you stuff the label in an eventbox. If you just use a GtkLabel without GtkEventBox, for some reason, the value does not seem to be correct.
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| <?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("Get the position of a label or eventbox");
$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);
$vbox->pack_start(new GtkLabel());
$vbox->pack_start($hbox = new GtkHBox());
$hbox->pack_start(new GtkLabel());
$label = new GtkLabel('this is the label'); // note 1
$hbox->pack_start($eventbox = new GtkEventBox, 0); // note 2
$eventbox->add($label); // note 2
$eventbox->modify_bg(Gtk::STATE_NORMAL, GdkColor::parse("#aaaaaa"));
$hbox->pack_start(new GtkLabel());
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Explanation
- This is a sample label.
- Create an eventbox and stuff the label in the eventbox.
- Get the co-ordinates of the label.
- Output the values to the command window.
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