Problem
You have displayed gif/jpg/png images in a GtkTreeView column in Part 1 as shown below:
Now you would like to combine the gif/jpg/png image and the text in the same column as shown below:
Solution
- Create a new column with GtkTreeviewcolumn.
- Create a pixbuf column with GtkCellrendererpixbuf, and add the pixbuf cellrenderer to the column with pack_start.
- Next create a standard text column with GtkCellrenderer, and add the text cellrenderer to the column with pack_start.
- Set up GtkCelllayout::set_cell_data_func() for both cellrenderers.
- In the cell-display function for pixbuf, load the image with GtkImage::new_from_file, and display the image with
$cell->set_property('pixbuf', $pixbuf)
. - In the cell-display function for text, set the text accordingly, and display the text with
$cell->set_property('text', $str)
.
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 |
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 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 59 62 63 64 65 67 68 69 70 71 72 73 76 77 78 79 80 81 82 83 84 85 86 87 88 89 91 92 93 95 96 104 105 106 107 108 109 110 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 | <?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 2\n". " stuff image and text in same column"); $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'); $field_justification = array(0.0, 0.0, 1.0, 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] == 'Qty') { $column = new GtkTreeViewColumn(); $cell_renderer = new GtkCellRendererPixbuf(); // note 1 $column->pack_start($cell_renderer, false); $column->set_cell_data_func($cell_renderer, "format_qty_pixbuf", $col); $cell_renderer = new GtkCellRendererText(); // note 2 $cell_renderer->set_property("xalign", $field_justification[$col]); $column->pack_start($cell_renderer, true); $column->set_attributes($cell_renderer, 'text', 2); // col 2 of the model $column->set_sort_column_id($col); $column->set_cell_data_func($cell_renderer, "format_qty_text", $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); $column->set_cell_data_func($cell_renderer, "format_col", $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(); $view->append_column($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, $col_num) { if ($col_num==3) { $amt = $model->get_value($iter, 3); $cell->set_property('text', '$'.number_format($amt,2)); } set_row_color($cell, $model, $iter); } // process selection function on_selection($selection) { list($model, $iter) = $selection->get_selected(); $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"; } function format_qty_pixbuf($column, $cell, $model, $iter, $col_num) { // note 3 $qty = $model->get_value($iter, 2); if ($qty<10) { $pixbuf = GdkPixbuf::new_from_file("ball_red.png"); } else { $pixbuf = GdkPixbuf::new_from_file("ball_green.png"); } $cell->set_property('pixbuf', $pixbuf); set_row_color($cell, $model, $iter); } function format_qty_text($column, $cell, $model, $iter, $col_num) { // note 4 $qty = $model->get_value($iter, 2); $cell->set_property('text', $qty); set_row_color($cell, $model, $iter); } function set_row_color($cell, $model, $iter) { // note 5 $path = $model->get_path($iter); // get the current path $row_num = $path[0]; // get the row number $row_color = ($row_num%2==1) ? '#dddddd' : '#ffffff'; // sets the row color for odd and even rows $cell->set_property('cell-background', $row_color); // sets the background color } ?> |
Output
As shown above.Explanation
The above sample code is based on How to display a 2D array in GtkTreeView - Part 5 - get user selection? and How to display gif or jpg images in GtkTreeView - Part 1?
What's new here:
- Set up the GtkCellRendererPixbuf.
- Set up the GtkCellRenderer.
- Display the image.
- Display the text.
- Set the alternate row color.
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