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Sample Code 75: How to display gif or jpg images in GtkTreeView - Part 1?
Written by kksou   
Friday, 27 October 2006
Problem

You would like to display gif, jpg or png images in a GtkTreeView as shown below:

How to display gif or jpg images in GtkTreeView - Part 1?


Solution

Sample Code

The following image files are required by the sample code below. Please save a copy of the image files and put them in the same directory where you store the sample code.

 ball_red.png
 ball_green.png

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<?php
$window = new GtkWindow();
$window->set_size_request(400, 280);
$window->connect_simple('destroy', array('Gtk','main_quit'));
$window->add($vbox = new GtkVBox());

// display title
$title = new GtkLabel("Display gif, jpg or png images in GtkTreeView - Part 1");
$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(
    'Red = below safety stock level (qty<10)'), 0, 0);
$vbox->pack_start(new GtkLabel(
    'Green = above safety stock level (qty>=10)'), 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));

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', 'Status');
    $field_justification = array(0.0, 0.0, 0.5, 1.0, .5);

    // 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); ++$col) {
        if ($field_header[$col] == 'Status') { // note 1
            $cell_renderer = new GtkCellRendererPixbuf(); 
            $column = new GtkTreeViewColumn(); 
            $column->pack_start($cell_renderer); 
            $column->set_cell_data_func($cell_renderer, "format_col", $col); 
        } else {
            $cell_renderer = new GtkCellRendererText();
            $cell_renderer->set_property("xalign", $field_justification[$col]);
            $column = new GtkTreeViewColumn($field_header[$col],
                $cell_renderer, 'text', $col);
            $column->set_alignment($field_justification[$col]);
            $column->set_sort_column_id($col);
        }

        // 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
    for ($row=0; $row<count($data); ++$row) {
        $values = array();
        for ($col=0; $col<count($data[$row]); ++$col) {
            $values[] = $data[$row][$col];
  • 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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  • Have some doubt about the registration? Please read this forum article.
Explanation

The above sample code is based on How to display a 2D array in GtkTreeView - Part 5 - get user selection?.

What's new here:

  1. Set up the GtkCellRendererPixbuf.
  2. Load the red ball for $qty<10. Load the green ball for $qty≥10. Then display the image with $cell->set_property('pixbuf', $pixbuf)

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