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Problem You want to change the cursor when the mouse moves over the clickable links as shown below:
Original cursor:
Cursor when over a clickable link:
Solution Due to the lack of documentation (just take a look at the man page of GdkCursor), this one took me two nights to get it working!
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| <?php
$window = new GtkWindow();
$window->set_size_request(400, 200);
$window->connect_simple('destroy', array('Gtk','main_quit'));
$window->add($vbox = new GtkVBox());
// displays a title
$title = new GtkLabel("Change cursor over clickable link\n".
"using php-gtk pre-defined cursors");
$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());
$link1 = create_link("manual", "http://gtk.php.net/manual/en/gtkclasses.php");
$link2 = create_link("mailing list", "http://www.nabble.com/Php---GTK---General-f171.html");
$hbox = new GtkHBox();
$hbox->pack_start(new GtkLabel("reference: php-gtk2 "), false);
$hbox->pack_start($link1, false);
$hbox->pack_start(new GtkLabel(" and "), false);
$hbox->pack_start($link2, false);
$vbox->pack_start($hbox, false);
$vbox->pack_start(new GtkLabel());
$status = new GtkLabel();
$status->set_alignment(0, 0);
$vbox->pack_start($status, 0, 0);
// function to setup the link
function create_link($title, $url) {
$label = new GtkLabel($title);
$label->set_markup('<span color="blue"><u>'.$title."</u></span>");
$eventbox = new GtkEventBox;
$eventbox->add($label);
$eventbox->connect('button-press-event', 'on_click', $title, $url);
$eventbox->connect('enter-notify-event', 'on_enter', $title, $url);
$eventbox->connect('leave-notify-event', 'on_leave', $title, $url);
return $eventbox;
}
function on_click($widget, $event, $title, $url) {
$shell = new COM('WScript.Shell'); // note 3
$shell->Run('cmd /c start "" "' . $url . '"', 0, FALSE); // note 3
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Explanation This example make use of the code in How to launch external app in winxp without the flashing of cmd window?.
What's new here:
- Create the new cursor to be used when mouse is over the clickable link. You can explore other cursors defined here.
- Set the cursor for the two clickable links.
- Note that if you're running this example on linux, please comment out these 3 lines and replace with the system command to launch your favorite browser.
Note
- Take note of where the three lines are located (note 1 and 2). If you set the cursor before the widgets are realized, you will get "Fatal error: Call to a member function set_cursor() on a non-object."
- We make use of pre-defined php-gtk cursors in this example. In the next article, I will show you how to set cursor using your own image.
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