316. How to display html text using gtkhtml?

Problem

With the new PHP-GTK2 beta release, it's now a breeze to display html text with the use of GtkHTML as shown below:

How to display html text using gtkhtml?


Solution

Using GtkHTML is easy.

  • We execute the built-in GtkHTML command with $gtkhtml->command($command_name);?>
  • Then display the html text with $html->load_from_string($html_text)

However, if this is the first time you use GtkHtml, please take note of the following.

Important Note:

  • This only works for PHP-GTK2 compliled with the additional library GtkHTML.
  • For linux, you have to recompile php-gtk2 to include this library.
  • For windows, you may refer to the article How to install PHP-GTK2 on windows. The latest beta release from official php-gtk2 website comes complete with GtkHTML.
  • In the php.ini, don't forget to add php-gtk.extensions = php_gtk_html2.dll to turn on GtkHTML.
  • Lastly, the most "tricky" part in running GtkHTML is that to run this script, you have to use gconfd-2 | php script.php.

    If you have installed the beta release of PHP-GTK2 on windows as outlined in this article, you will find the program gconfd-2.exe in the root directory of php-gtk.
  • In the event that you cannot get this sample code to work, I would suggest that you try to do a fresh install of the beta-release of PHP-GTK2 (details here). It should work out-of-the-box (just need to add php-gtk.extensions = php_gtk_html2.dll in php.ini as explained above). Note that you can still keep your original copy of php-gtk2 while having this new version.
  • You will most likely see the warning (php.exe:5348): Gdk-WARNING **: gdkselection-win32.c:1068: OpenClipboard failed: Invalid window handle.. Not really sure how to fix this yet. The script seems to run ok, though.


Sample Code

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<?php
$window = new GtkWindow();
$window->set_title($argv[0]);
$window->set_size_request(400, 250);
$window->connect_simple('destroy', array('Gtk','main_quit'));
$window->add($vbox = new GtkVBox());

$html = new GtkHTML(); // note 1

$vbox->pack_start($html);

$html_text = "<h1>GtkHTML Demo</h1>
<p><i>hello <font color=blue>world</font></i>, <b>gtkhtml!</b></p>

<table border=4>
<tr><th>A</th><th>B</th></tr>
<tr><td>a1.1</td><td bgcolor=#BAFFBF>b1.2</td></tr>
<tr><td bgcolor=#BAFFBF>a2.1</td><td>b2.2</td></tr>
</table>

<ul>
<li>item 1</li>
<li>item 2</li>
<li>item 3</li>
</ul>
";

$html->load_from_string($html_text); // note 2

$window->show_all();
Gtk::main();
?>

Output

As shown above.
 

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