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Problem You have an array:
$list = array(
array ('id' => '101', 'parent' => '0', 'data' => 'data0'),
array ('id' => '102', 'parent' => '101', 'data' => 'data1'),
array ('id' => '103', 'parent' => '0', 'data' => 'data2'),
array ('id' => '104', 'parent' => '0', 'data' => 'data3'),
array ('id' => '105', 'parent' => '104', 'data' => 'data4'),
array ('id' => '106', 'parent' => '105', 'data' => 'data5')
);
You want to display this array as a tree structure as shown below:
Solution
- Set up a GtkTreestore to store the tree structure.
- Create a GtkTreeview and attach the treestore to the treeview.
- The treeview will automatically display the tree structure from the treeview.
Sample Code 1
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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("Display a tree structure from array");
$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);
$data = array(
array ('id' => '101', 'parent' => '0', 'data' => 'data0'),
array ('id' => '102', 'parent' => '101', 'data' => 'data1'),
array ('id' => '103', 'parent' => '0', 'data' => 'data2'),
array ('id' => '104', 'parent' => '0', 'data' => 'data3'),
array ('id' => '105', 'parent' => '104', 'data' => 'data4'),
array ('id' => '106', 'parent' => '105', 'data' => 'data5')
);
display_table($vbox, $data);
$window->show_all();
Gtk::main();
function display_table($vbox, $data) {
// Set up a scroll window
$scrolled_win = new GtkScrolledWindow();
$scrolled_win->set_policy( Gtk::POLICY_AUTOMATIC,
Gtk::POLICY_AUTOMATIC);
$vbox->pack_start($scrolled_win);
// Creates the list store
if (defined("GObject::TYPE_STRING")) {
$model = new GtkTreeStore(GObject::TYPE_LONG,
GObject::TYPE_STRING, GObject::TYPE_STRING); // note 1
} else {
$model = new GtkTreeStore(Gtk::TYPE_LONG,
Gtk::TYPE_STRING, Gtk::TYPE_STRING); // note 1
}
$field_header = array('id', 'title', 'data');
// Creates the view to display the list store
$view = new GtkTreeView($model); // note 2
$scrolled_win->add($view);
// Creates the columns
for ($col=0; $col<count($field_header); ++$col) { // note 3
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- 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
- Sets up the treestore to store the data. Here it sets three fields. The first one is integer that stores the id. The second and third are strings.
- Creates a GtkTreeview. It is here that you bind the model to the treeview.
- Sets up the treeview columns.
- Loops through the data list and appends the data one by by to the tree structure. Note that
$nodes stores the GtkTreeiter of each node. You can view this as a pointer to the node.
Related Links
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