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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:
Suppose you would like to have the same height for all rows in the treeview.
In Part 1, we used the method GtkCellRenderer::set_fixed_size().
In this Part 2, we used the method GtkCellRendererText::set_fixed_height_from_font(). Note that this method gives a much better "fit" as compared to method 1. You do not need to calculate the exact height of the rows in pixels becuase PHP-GTK2 will automatically adjust the height depending on the size of the font as shown below:
Solution
- To set the height of each row, use the method GtkCellRendererText::set_fixed_height_from_font(no. of rows)').
Important Note: This only works for PHP-GTK2 compliled with gtk+ v2.10 and above. If you are using an older version, for linux, you may follow the step-by-step instructions to recompile php-gtk2 with gtk+ v2.10. For windows, please refer to How to install php gtk2 on windows? You may also want to take a look here to see some of the new exciting PHP-GTK2 Functionalities.
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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 - Part 2\n".
" using GtkCellRenderer::set_fixed_height_from_font()");
$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_height_from_font(3);
$column = new GtkTreeViewColumn($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:
- Set all rows to height equivalent to 3 rows of text.
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