$color = isset($_SESSION['color']) ? $_SESSION['color'] : 0;
$triangles = isset($_SESSION['triangles']) ? $_SESSION['triangles'] : FALSE;
$antialias = isset($_SESSION['antialias']) ? $_SESSION['antialias'] : 0;
$autosub = isset($_SESSION['autosub']) ? $_SESSION['autosub'] : 0;
$font = isset($_SESSION['font']) ? $_SESSION['font'] : 'Vera.ttf';
$fontsize = isset($_SESSION['fontsize']) ? $_SESSION['fontsize'] : 8;
// Validate the phrase and draw the tree
$sp = new CStringParser($data);
if (!$sp->Validate()) {
// Display an error if the phrase doesn't validate.
// Right now that only means the brackets didn't
// match up. More tests could be added in the future.
// It would also be a good idea to make this error
// image creation a standalone class or something.
$im = imagecreate(350, 20);
$col_bg = imagecolorallocate($im, 255, 255, 255);
$col_fg = imagecolorallocate($im, 255, 0, 0);
imagestring($im, 3, 5, 3, "Sentence brackets don't match up...", $col_fg);
imagepng($im);
} else {
// If all is well, go ahead and draw the graph ...
$sp->Parse();
if ($autosub) {
$sp->AutoSubscript();
}
$elist = $sp->GetElementList();
// Draw the graph
$fontpath = dirname($_SERVER['SCRIPT_FILENAME']) . '/ttf/';
$graph = new CTreegraph($elist, $color, $antialias, $triangles, $fontpath . $font, $fontsize);
$graph->Draw();
}
){kind=link}