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Problem There are some stuff that are supposed to be simple and fundamental, but for some reason, are not that "straightforward" in php-gtk. Setting the size of a GtkButton is one example.
Suppose you want your button to be of size 80x32, if you just use:
$button = new GtkButton('button');
$button->set_size_request(80, 32);
$vbox->pack_start($button);
You will find the button expanding to fill up the entire window, even though you have used set_size_request:
Even if you set the expand and fill to false:
$button = new GtkButton('button');
$button->set_size_request(80, 32);
$vbox->pack_start($button, 0, 0);
You will get this:
Let's stuff the button into a hbox:
$button = new GtkButton('button');
$button->set_size_request(80, 32);
$hbox = new GtkHBox();
$hbox->pack_start($button, 0, 0);
$vbox->pack_start($hbox);
You will get this:
So what should you do if you really want the button to be exactly of size 80x32 as shown below:
Solution
- Stuff the button in a GtkHBox. Don't forget to set the expand and fill to
false when packing the button into the hbox.
- When stuffing the above hbox in the container, don't forget to set the expand and fill to
false too.
Sample Code 1
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$window = new GtkWindow();
$window->set_size_request(400, 150);
$window->connect_simple('destroy', array('Gtk','main_quit'));
$window->add($vbox = new GtkVBox());
// display title
$title = new GtkLabel("Set the size of button to exactly 80 x 32");
$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);
$button = new GtkButton('button'); // note 1
$button->set_size_request(80, 32); // note 1
$hbox = new GtkHBox(); // note 2
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Explanation
- Create the button and set its size.
- Create a HBox and stuff the button into it. Don't forget to set the expand and fill to
false.
- Stuff the HBox in the containing VBox. Set the expand and fill to
false too.
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User reviews Average user ratings:  5.0 (from 2 users) Note: You have to be a registered member to leave a comment. Free registration here. |
August 29, 2007 11:07pm
This article is not useful. You should not use fixed sizes with gtk because it messes up different user configurations. You can't know if the font and theme of the user will render a particular size like you intended. Instead you should pack widgets in such a way that size doesn't matter at all.
July 22, 2008 4:07pm