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Sample Code 355: How to have the same height for all rows in GtkTreeView - Part 1 - set_fixed_size?
Written by kksou   
Thursday, 01 November 2007
Problem

Suppose you have set up some cells of a GtkTreeView with multiple lines as outlined in How to have multiple lines in a cell of GtkTreeView - Part 1?.

By default, PHP-GTK2 will autofit the height of each row based on the number of lines of each cell as shown below:

How to have multiple lines in a cell of GtkTreeView - Part 1?

Suppose you would like to have the same height for all rows in the treeview as shown below:

How to have the same height for all rows in GtkTreeView - Part 1 - set_fixed_size?


Solution

Sample Code
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<?php
$window = new GtkWindow();
$window->set_size_request(400, 330);
$window->connect_simple('destroy', array('Gtk','main_quit'));
$window->add($vbox = new GtkVBox());

// display title
$title = new GtkLabel("    Have the same height for all rows in a treeview\n".
"Part 1 - by using GtkCellRenderer::set_fixed_size()");
$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);

// the 2D table
$data = array(
array('row0', "item 42\nline0.2\nline0.3", 2, 3.1),
array('row1', "item 36\nline1.2", 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));

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 GtkListStore(GObject::TYPE_STRING, GObject::TYPE_STRING,
            GObject::TYPE_LONG, GObject::TYPE_DOUBLE);
    } else {
        $model = new GtkListStore(Gtk::TYPE_STRING, Gtk::TYPE_STRING,
            Gtk::TYPE_LONG, Gtk::TYPE_DOUBLE);
    }
    $field_header = array('Row #', 'Description', 'Qty', 'Price');
    $field_justification = array(0.0, 0.0, 0.5, 1.0);
    $field_size = array(60, 160, 60, 0);

    // Creates the view to display the list store
    $view = new GtkTreeView($model);
    $scrolled_win->add($view);

    // Creates the columns
    for ($col=0; $col<count($field_header); ++$col) {
        $cell_renderer = new GtkCellRendererText();
        $cell_renderer->set_property('xalign', $field_justification[$col]);
        $cell_renderer->set_property('yalign', 0);
        if ($field_size[$col]>0)
            $cell_renderer->set_fixed_size($field_size[$col], 60); // note 1
        $column = new GtkTreeViewColumn($field_header[$col],
            $cell_renderer, 'text', $col);
        $column->set_alignment($field_justification[$col]);
        $column->set_resizable(true);

        // set the header font and color
        $label = new GtkLabel($field_header[$col]);
        $label->modify_font(new PangoFontDescription("Arial Bold"));
        $label->modify_fg(Gtk::STATE_NORMAL, GdkColor::parse("#0000FF"));
        $column->set_widget($label);
        $label->show();

        // setup self-defined function to display alternate row color
        $column->set_cell_data_func($cell_renderer, "format_col", $col);
        $view->append_column($column);
    }

    // pupulates the data
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Explanation

We make use of the code from How to display a 2D array in GtkTreeView - Part 5 - get user selection?

What's new here:

  1. Set all rows to height=60 pixels.

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