Problem
You have sorted a treeview using GtkTreeModelSort in How to sort treeview using GtkTreeModelSort?
Now you would like to retrieve the values from the sorted model as shown below:
Solution
The sorted data are stored in the GtkTreeModelSort.
We simply loop through the sorted model to retrieve all the values.
Sample Code
1 2 3 4 5 6 7 8 9 10 11 12 13 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 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 70 71 72 73 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 150 151 152 153 154 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 175 176 177 178 179 180 186 187 188 189 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 210 212 213 214 215 216 217 218 219 220 221 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 | <?php $window = new GtkWindow(); $window->set_size_request(400, 312); $window->connect_simple('destroy', array('Gtk','main_quit')); $window->add($vbox = new GtkVBox()); $accel_group = new GtkAccelGroup(); $window->add_accel_group($accel_group); // define menu definition $menu_definition = array( '_File' => array('_Quit|Q'), '_Sort By' => array('Row#|0', 'Description|1', 'Qty|2', 'Price|3'), 'Output' => array('Output Sorted Data|W') ); setup_menu($vbox, $menu_definition); // display title $title = new GtkLabel("Output Sorted Model in Treeview - 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("Ctrl-0: sort by row #\n". "Ctrl-1: sort by Description\n". "Ctrl-2: sort by Qty\n". "Ctrl-3: sort by Price\n". "Ctrl-W: output sorted model"), 0, 0); $vbox->pack_start(new GtkLabel(), 0, 0); // add a small gap // the 2D table $data = array( array('row0', 'item 42', 2, 3.1, 1), array('row1', 'item 36', 20, 6.21, 1), array('row2', 'item 21', 8, 9.36, 1), array('row3', 'item 10', 11, 12.4, 1), array('row4', 'item 7', 5, 15.5, 1), array('row5', 'item 4', 17, 18.6, 1), array('row6', 'item 3', 20, 21.73, 1)); display_table ($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 global $model, $view; if (defined("GObject::TYPE_STRING")) { $model = new GtkListStore(GObject::TYPE_STRING, GObject::TYPE_STRING, GObject::TYPE_LONG, GObject::TYPE_DOUBLE, GObject::TYPE_BOOLEAN); } else { $model = new GtkListStore(Gtk::TYPE_STRING, Gtk::TYPE_STRING, Gtk::TYPE_LONG, Gtk::TYPE_DOUBLE, Gtk::TYPE_BOOLEAN); } $field_header = array('Row #', 'Description', 'Qty', 'Price'); $field_justification = array(0.0, 0.0, 0.5, 1.0); // setup GtkTreeModelSort $modelsort = new GtkTreeModelSort($model); $modelsort->set_sort_column_id(0, Gtk::SORT_ASCENDING); // Creates the view to display the list store $view = new GtkTreeView($modelsort); $scrolled_win->add($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); } // setup selection $selection = $view->get_selection(); $selection->connect('changed', 'on_selection'); } // self-defined function to format the price column function format_col($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', $row_color); } // the function that is called when user selects a row function on_selection($selection) { list($model, $iter) = $selection->get_selected(); if ($iter==NULL) return; $desc = $model->get_value($iter, 1); $qty = $model->get_value($iter, 2); $price = $model->get_value($iter, 3); print "You have selected $desc: $qty ($price)\n"; } // setup menu function setup_menu($vbox, $menus) { global $accel_group; $menubar = new GtkMenuBar(); $vbox->pack_start($menubar, 0, 0); foreach($menus as $toplevel => $sublevels) { $menubar->append($top_menu = new GtkMenuItem($toplevel)); $menu = new GtkMenu(); $top_menu->set_submenu($menu); foreach($sublevels as $submenu) { if (strpos("$submenu", '|') === false) { $accel_key = ''; } else { list($submenu, $accel_key) = explode('|', $submenu); } if (is_array($submenu)) { // set up radio menus $i=0; $radio[0] = null; foreach($submenu as $radio_item) { $radio[$i] = new GtkRadioMenuItem($radio[0], $radio_item); $radio[$i]->connect('toggled', "on_toggle"); $menu->append($radio[$i]); ++$i; } $radio[0]->set_active(1); // select the first item } else { if ($submenu=='<hr>') { $menu->append(new GtkSeparatorMenuItem()); } else { $submenu2 = str_replace('_', '', $submenu); $submenu2 = str_replace(' ', '_', $submenu2); $stock_image_name = 'Gtk::STOCK_'.strtoupper($submenu2); if (defined($stock_image_name)) { $menu_item = new GtkImageMenuItem( constant($stock_image_name)); } else { $menu_item = new GtkMenuItem($submenu); } if ($accel_key!='') { $menu_item->add_accelerator("activate", $accel_group, ord($accel_key), Gdk::CONTROL_MASK, 1); } $menu->append($menu_item); $menu_item->connect('activate', 'on_menu_select'); } } } } } // process menu item selection function on_menu_select($menu_item) { global $view; $model_sort = $view->get_model(); $item = $menu_item->child->get_label(); echo "menu selected: $item\n"; if ($item=='_Quit') { Gtk::main_quit(); return false; } elseif ($item=='Row#') { $model_sort->set_sort_column_id(0, Gtk::SORT_ASCENDING); } elseif ($item=='Description') { $model_sort->set_sort_column_id(1, Gtk::SORT_ASCENDING); } elseif ($item=='Qty') { $model_sort->set_sort_column_id(2, Gtk::SORT_ASCENDING); } elseif ($item=='Price') { $model_sort->set_sort_column_id(3, Gtk::SORT_ASCENDING); } elseif ($item=='Output Sorted Data') { // note 1 output_model(); } } function output_model() { global $view; $model = $view->get_model(); // note 2 $n = $model->iter_n_children(NULL); // note 3 for ($i=0; $i<$n; ++$i) { // note 4 $iter = $model->get_iter($i); $row_no = $model->get_value($iter, 0); $desc = $model->get_value($iter, 1); $qty = $model->get_value($iter, 2); $price = $model->get_value($iter, 3); echo "$i: $row_no ($desc) qty=$qty price=$price\n"; } } ?> |
Output
As shown above.Explanation
We make use of the code from How to sort treeview using GtkTreeModelSort? to sort the treeview using GtkTreeModelSort.
What's new here:
- User has selected "Output Sorted Data" from the menu, or by pressing Ctrl-W.
- Get the current sorted model.
- Get the total number of rows.
- Loop through each row.
Note
- If you would like "item 4" to come before "item 36", please refer to How to sort treeview using self defined sort function? to create your custom sort function.
- This example uses one GtkTreeModelSort. If you wish to use multiple GtkTreeModelSort's please refer to Part 2.
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