/**
* Get Base64 image data
*
* @return string|null
*/
private function getBase64ImageData(ImageElement $element)
{
$source = $element->getSource();
$imageType = $element->getImageType();
$imageData = null;
$imageBinary = null;
$actualSource = null;
// Get actual source from archive image or other source
// Return null if not found
if ($element->getSourceType() == ImageElement::SOURCE_ARCHIVE) {
$source = substr($source, 6);
list($zipFilename, $imageFilename) = explode('#', $source);
$zipClass = \PhpOffice\PhpWord\Settings::getZipClass();
$zip = new $zipClass();
if ($zip->open($zipFilename) !== false) {
if ($zip->locateName($imageFilename)) {
$zip->extractTo($this->parentWriter->getTempDir(), $imageFilename);
$actualSource = $this->parentWriter->getTempDir() . DIRECTORY_SEPARATOR . $imageFilename;
}
}
$zip->close();
} else {
$actualSource = $source;
}
if (is_null($actualSource)) {
return null;
}
// Read image binary data and convert into Base64
if ($element->getSourceType() == ImageElement::SOURCE_GD) {
$imageResource = call_user_func($element->getImageCreateFunction(), $actualSource);
ob_start();
call_user_func($element->getImageFunction(), $imageResource);
$imageBinary = ob_get_contents();
ob_end_clean();
} else {
if ($fileHandle = fopen($actualSource, 'rb', false)) {
$imageBinary = fread($fileHandle, filesize($actualSource));
fclose($fileHandle);
}
}
if (!is_null($imageBinary)) {
$base64 = chunk_split(base64_encode($imageBinary));
$imageData = 'data:' . $imageType . ';base64,' . $base64;
}
return $imageData;
}
/**
* Test archived image
*/
public function testArchivedImage()
{
$archiveFile = __DIR__ . '/../_files/documents/reader.docx';
$imageFile = 'word/media/image1.jpeg';
$image = new Image("zip://{$archiveFile}#{$imageFile}");
$this->assertEquals('image/jpeg', $image->getImageType());
}
