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Problem You have set up File Save using GtkFileChooser in Part 1. However, there are two areas for improvements:
- When in File Chooser, pressing ESC should quit the dialog.
- When in File Chooser, when the user has entered the filename, pressing Enter should be equivalent to pressing the OK button.
You would like to fix this.
Solution
Sample Code Note: If you have installed php-gtk2 using Gnope Installer on Windows, and if running the sample code below gives you warning that the Symbolic names for keys (e.g. Gdk::KEY_Return) is not defined, you might want to update your php-gtk2 with the latest php-gtk2.dll available here. Simply download the php-gtk2.dll and replace the copy in the folder php-gtk2\ext. The latest compilation has put in the Symbolic names for keys listed here.
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| <?php
$window = new GtkWindow();
$window->set_size_request(400, 150);
$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('_New|N', '_Open|O', '_Close|C', '<hr>', '_Save|S', 'Save _As','<hr>', 'E_xit'),
'_Edit' => array('Cu_t|X', '_Copy|C', '_Paste|V', '<hr>', 'Select _All|A', '<hr>', '_Undo|Z','_Redo|Y'),
'_Test' => array('Test_1|1', 'Test_2|2', 'Test_3|3', '<hr>',
array('Selection 1', 'Selection 2', 'Selection 3'),
'<hr>', 'Test_4|4')
);
$menu = new Menu($vbox, $menu_definition, $accel_group);
// display title
$title = new GtkLabel("Save a file with GtkFileChooser - Part 2");
$title->modify_font(new PangoFontDescription("Times New Roman Italic 10"));
$title->modify_fg(Gtk::STATE_NORMAL, GdkColor::parse("#0000ff"));
$vbox->pack_start($title);
$vbox->pack_start(new GtkLabel("Press Ctrl-S to save a file"));
$vbox->pack_start(new GtkLabel("Supports Esc and Enter"));
$vbox->pack_start(new GtkLabel(""));
$window->show_all();
Gtk::main();
// class Menu
class Menu {
var $prev_keyval = 0;
var $prev_state = 0;
var $prev_keypress = '';
function Menu($vbox, $menu_definition, $accel_group) {
$this->menu_definition = $menu_definition;
$menubar = new GtkMenuBar();
$vbox->pack_start($menubar, 0, 0);
foreach($menu_definition as $toplevel => $sublevels) {
$top_menu = new GtkMenuItem($toplevel);
$menubar->append($top_menu);
$menu = new GtkMenu();
$top_menu->set_submenu($menu);
// let's ask php-gtk to tell us when user press the 2nd Alt key
$menu->connect('key-press-event', array(&$this, 'on_menu_keypress'), $toplevel);
foreach($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', array(&$this, "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);
$menu_item->connect('activate', array(&$this, 'on_menu_select'));
$this->menuitem[$toplevel][$submenu] = $menu_item;
}
}
}
}
}
// process radio menu selection
function on_toggle($radio) {
$label = $radio->child->get_label();
$active = $radio->get_active();
echo("radio menu selected: $label\n");
}
// process menu item selection
function on_menu_select($menu_item) {
$item = $menu_item->child->get_label();
echo "menu selected: $item\n";
if (method_exists($this, $item)) $this->$item();
if ($item=='E_xit') Gtk::main_quit();
}
// let user choose a file with a file chooser dialog
function _Open() {
$dialog = new GtkFileChooserDialog("File Save", null, Gtk::FILE_CHOOSER_ACTION_OPEN,
array(Gtk::STOCK_OK, Gtk::RESPONSE_OK), null);
$dialog->connect('key-press-event', array(&$this, 'on_dialog_keypress'), $dialog);
$dialog->show_all();
if ($dialog->run() == Gtk::RESPONSE_OK) {
$selected_file = $dialog->get_filename();
echo "selected_file = $selected_file\n";
}
$dialog->destroy();
}
// let user choose a file with a file chooser dialog
function _Save() {
$dialog = new GtkFileChooserDialog("File Save", null, Gtk::FILE_CHOOSER_ACTION_SAVE,
array(Gtk::STOCK_OK, Gtk::RESPONSE_OK), null);
$dialog->connect('key-press-event', array(&$this, 'on_dialog_keypress'), $dialog); // note 1
$dialog->show_all();
|
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Explanation The above sample code is based on How to save a file with GtkFileChooser - Part 1?.
What's new here:
- Set up the key-press-event to capture the ESC and Enter key.
- For ESC key, just destroy the dialog.
- For Enter key, we simulate a button click on the OK button with GtkButton::clicked().
- Here we try to "dig" out the ID of the OK button, starting from the $dialog. We need the ID of the OK button so that we can click on it.
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