Problem
We have seen how to process single row selection in a treeview in the article How to display a 2D array in GtkTreeView - Part 5 - get user selection?
Suppose you would like to allow users to select multiple rows as shown below:
Solution
- Enable multiple rows selection with GtkTreeSelection::set_mode(Gtk::SELECTION_MULTIPLE).
- Get the selected rows with GtkTreeselection::get_selected_rows().
Sample Code
1 2 3 4 5 6 7 8 9 10 11 12 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 90 91 92 93 94 95 96 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 118 119 120 121 122 123 124 125 126 127 | <?php $window = new GtkWindow(); $window->set_size_request(400, 210); $window->connect_simple('destroy', array('Gtk','main_quit')); $window->add($vbox = new GtkVBox()); // display title $title = new GtkLabel("Process multiple row selections in GtkTreeView"); $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); $vbox->pack_start($hbox = new GtkHBox(), 0); $hbox->pack_start($button = new GtkButton('Process'), 0); $button->connect('clicked', 'on_process_button'); // 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)); $view = display_table($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); // 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]); $column = new GtkTreeViewColumn($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]; } $model->append($values); } $selection = $view->get_selection(); $selection->set_mode(Gtk::SELECTION_MULTIPLE); // note 1 return $view; } // self-defined function to format the price column function format_col($column, $cell, $model, $iter, $col_num) { $path = $model->get_path($iter); // get the current path $row_num = $path[0]; // get the row number if ($col_num==3) { $amt = $model->get_value($iter, 3); $cell->set_property('text', '$'.number_format($amt,2)); } $row_color = ($row_num%2==1) ? '#dddddd' : '#ffffff'; $cell->set_property('cell-background', $row_color); } function on_process_button($button) { global $view; $model = $view->get_model(); $selection = $view->get_selection(); list($model, $selected_rows) = $selection->get_selected_rows(); // note 2 $i = 0; foreach($selected_rows as $path) { // note 3 $iter = $model->get_iter($path); $desc = $model->get_value($iter, 1); $qty = $model->get_value($iter, 2); $price = $model->get_value($iter, 3); print "Selection $i: $desc: $qty ($price)\n"; ++$i; } } ?> |
Output
As shown above.
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:
- Enable multiple rows selection.
- Retrieve the selected rows.
- Process each selected row.
Related Links
- How to display a 2D array in GtkTreeView - Part 1?
- How to display a 2D array in GtkTreeView - Part 2 - set alignment and headers?
- How to display a 2D array in GtkTreeView - Part 3 - with alternate row colors?
- How to display a 2D array in GtkTreeView - Part 4 - format cell content?
- How to display a 2D array in GtkTreeView - Part 6 - allow multiple rows selection?
- How to display bold and colored fonts in GtkTreeView using pango markup language?
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