php-gtk2 Cookbook: How to use GtkSheet - Part 4 - set values with justification?

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Sample Code 249: How to use GtkSheet - Part 4 - set values with justification?

Written by kksou

Monday, 04 June 2007

Problem

You have displayed a 2D array in a GtkSheet in How to use GtkSheet - Part 3 - set values?.

Now you would like to display the 2D array in a GtkSheet with appropriate justification as shown below:

How to use GtkSheet - Part 4 - set values with justification?

Solution

Make sure your version of PHP-GTK2 has the GtkExtra library, and the feature turned on in php.ini. (See notes below.)
Create the spreadsheet as outlined in How to use GtkSheet - Part 1 - create the spreadsheet?
Set the value of a cell with justification using GtkSheet::set_cell($row, $col, $justification, $value)
The $justification are predefined constants as listed here.

Important Note: This only works for PHP-GTK2 compliled with the additional library GtkExtra. For linux, you can download the files from http://gtkextra.sourceforge.net/ and do a recompile. For windows, you may use the builds by Elizabeth Smith or the official php-gtk2 beta release available at http://gtk.php.net/download.php. Both contain all the required gtkextra libraries and dll's. In the php.ini, don't forget to add php-gtk.extensions = php_gtk_extra2.dll to turn on GtkExtra.

Sample Code

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<?php
$window = new GtkWindow();
$window->set_title($argv[0]);
$window->set_size_request(421, 250);
$window->connect_simple('destroy', array('Gtk','main_quit'));
$window->add($vbox = new GtkVBox());

// display title
$title = new GtkLabel("Using GtkSheet\n".
"Part 4 - Set Values with Justification");
$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, 0);
$vbox->pack_start(new GtkLabel(), 0, 0);

// the 2D table
$data = array(
array('row0', 'item 42', 2, 3.1),
array('row1', 'item 36', 20, 6.21),
array('row2', 'item 21', 8, 9.36),
array('row3', 'item 10', 11, 12.4),
array('row4', 'item 7', 5, 15.5),
array('row5', 'item 4', 17, 18.6),
array('row6', 'item 3', 20, 21.73));

$justification = array('LEFT', 'LEFT', 'CENTER', 'RIGHT'); // note 1

display_table($vbox, $data, $justification);

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

function display_table($vbox, $data, $justification) {

$scrolled_win = new GtkScrolledWindow();

Note that this is only 70% of the sample code. You have to be a registered member to see the entire sample code. Please login or register.
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Explanation

The array specifying the justification for each column. In this example, we set the first two columns to be left-justified, the third column (unit price) to be center-justified, and the last (price) to be right justiftied.
Set the value of a cell in GtkSheet.

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