// any later version.
//
// WIRIS Plugin is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with WIRIS Plugin. If not, see <http://www.gnu.org/licenses/>.
//
require_once 'bootstrap.php';
include 'libwiris.php';
$currentPath = dirname($_SERVER['PHP_SELF']) . '/';
if (isset($_POST['image'])) {
$fileName = md5($_POST['image']);
$config = wrs_loadConfig(WRS_CONFIG_FILE);
$formulaPath = wrs_getFormulaDirectory($config) . '/' . $fileName . '.xml';
if (isset($_POST['mml']) && !is_file($formulaPath)) {
file_put_contents($formulaPath, $_POST['mml']);
}
$url = $currentPath . 'showcasimage.php?formula=' . $fileName . '.png';
$imagePath = wrs_getCacheDirectory($config) . '/' . $fileName . '.png';
if (!is_file($imagePath)) {
if (file_put_contents($imagePath, base64_decode($_POST['image'])) !== false) {
echo $url;
} else {
echo $currentPath . '../core/cas.gif';
}
} else {
echo $url;
}
private function math_image($mathml)
{
global $CFG;
$config = wrs_loadConfig(WRS_CONFIG_FILE);
include $CFG->dirroot . '/lib/editor/tinymce/version.php';
//Moodle older than 2.4
$integration_folder = "/lib/editor/tinymce/tiny_mce/" . $plugin->release . "/plugins/tiny_mce_wiris/integration";
if (!file_exists($CFG->dirroot . $integration_folder)) {
$integration_folder = "/lib/editor/tinymce/plugins/tiny_mce_wiris/integration";
}
$integration_url = $CFG->wwwroot . $integration_folder;
$src = $this->mathml2img($mathml, $integration_url);
$lang = substr(current_language(), 0, 2);
$data = array('mml' => $mathml, 'lang' => $lang, 'src' => $src);
$output = '<img align="middle" ';
$output .= 'src="' . $src . '" ';
if (isset($config['wirisaccessibilityenabled']) && $config['wirisaccessibilityenabled']) {
$accessible = $this->mathml2accessible($data, $config);
$output .= 'alt="' . $accessible . '" ';
}
$output .= ' />';
return $output;
}