From 6768c7e7ef195bef5006a5c4ae85ef7d9e155b0e Mon Sep 17 00:00:00 2001
From: Roland Gruber <post@rolandgruber.de>
Date: Wed, 22 Jul 2020 08:23:49 +0200
Subject: [PATCH] webcam support

---
 lam/lib/html.inc                  | 63 +++++++++++++++++++++++++++++++
 lam/lib/modules/inetOrgPerson.inc | 21 ++++++++++-
 lam/templates/lib/500_lam.js      | 46 ++++++++++++++++++++++
 3 files changed, 128 insertions(+), 2 deletions(-)

diff --git a/lam/lib/html.inc b/lam/lib/html.inc
index 21fb7b7d..051d88f1 100644
--- a/lam/lib/html.inc
+++ b/lam/lib/html.inc
@@ -4973,5 +4973,68 @@ class htmlResponsiveTable extends htmlElement {
 
 }
 
+/**
+ * Renders a canvas.
+ *
+ * @author Roland Gruber
+ */
+class htmlCanvas extends htmlElement {
+
+	private $id;
+
+	/**
+	 * Constructor
+	 *
+	 * @param string $id html id
+	 */
+	public function __construct($id) {
+		$this->id = $id;
+	}
+
+	/**
+	 * @inheritDoc
+	 */
+	function generateHTML($module, $input, $values, $restricted, &$tabindex, $scope) {
+		$classesValue = '';
+		if (!empty($this->cssClasses)) {
+			$classesValue = ' class="' . implode(' ', $this->cssClasses) . '"';
+		}
+		echo '<canvas id="' . $this->id . '" ' . $classesValue . '>';
+		echo '</canvas>';
+		return array();
+	}
+}
+
+/**
+ * Renders a video.
+ *
+ * @author Roland Gruber
+ */
+class htmlVideo extends htmlElement {
+
+	private $id;
+
+	/**
+	 * Constructor
+	 *
+	 * @param string $id html id
+	 */
+	public function __construct($id) {
+		$this->id = $id;
+	}
+
+	/**
+	 * @inheritDoc
+	 */
+	function generateHTML($module, $input, $values, $restricted, &$tabindex, $scope) {
+		$classesValue = '';
+		if (!empty($this->cssClasses)) {
+			$classesValue = ' class="' . implode(' ', $this->cssClasses) . '"';
+		}
+		echo '<video id="' . $this->id . '" ' . $classesValue . '>';
+		echo '</video>';
+		return array();
+	}
+}
 
 ?>
diff --git a/lam/lib/modules/inetOrgPerson.inc b/lam/lib/modules/inetOrgPerson.inc
index 47fbeef2..f6439fab 100644
--- a/lam/lib/modules/inetOrgPerson.inc
+++ b/lam/lib/modules/inetOrgPerson.inc
@@ -1704,9 +1704,26 @@ class inetOrgPerson extends baseModule implements passwordService {
 			$container->add(new htmlSubTitle(_('Upload image')), 12);
 			$label = _('Photo file');
 			$container->add(new htmlResponsiveInputFileUpload('photoFile', $label, 'photoUpload'), 12);
+			$container->addVerticalSpacer('0.5rem');
+			$container->addLabel(new htmlOutputText('&nbsp;', false));
+			$container->addField(new htmlAccountPageButton(get_class($this), 'photo', 'upload', _('Upload')));
 			$container->addVerticalSpacer('1rem');
-			$container->addLabel(new htmlAccountPageButton(get_class($this), 'photo', 'upload', _('Upload')));
-			$container->addField(new htmlAccountPageButton(get_class($this), 'attributes', 'back', _('Back')));
+			$webcamContent = new htmlResponsiveRow();
+			$webcamContent->add(new htmlSubTitle(_('Get from webcam')), 12);
+			$webcamContent->addLabel(new htmlOutputText(_('Image')));
+			$webcamContent->addField(new htmlVideo('lam-webcam-video'));
+			$webcamContent->addLabel(new htmlOutputText('&nbsp;', false));
+			$webcamButtonGroup = new htmlGroup();
+			$captureButton = new htmlButton('lam-webcam-capture', _('Capture'));
+			$captureButton->setOnClick('window.lam.tools.startWebcamCapture(event);');
+			$webcamButtonGroup->addElement($captureButton);
+			$webcamButtonGroup->addElement(new htmlAccountPageButton(get_class($this), 'photo', 'upload', _('Upload')));
+			$webcamButtonGroup->addElement(new htmlCanvas('lam-webcam-canvas'));
+			$webcamContent->addField($webcamButtonGroup);
+			$webcamDiv = new htmlDiv('lam_webcam_div', $webcamContent, array('hidden'));
+			$container->add($webcamDiv, 12);
+			$container->addVerticalSpacer('1rem');
+			$container->add(new htmlAccountPageButton(get_class($this), 'attributes', 'back', _('Back')), 12);
 		}
 		else {
 			$container->add(new htmlSubTitle(_('Crop image')), 12);
diff --git a/lam/templates/lib/500_lam.js b/lam/templates/lib/500_lam.js
index d7839e40..4ec1ce52 100644
--- a/lam/templates/lib/500_lam.js
+++ b/lam/templates/lib/500_lam.js
@@ -934,6 +934,51 @@ window.lam.tools.setInitialFocus = function() {
 	jQuery('.lam-initial-focus').focus();
 };
 
+/**
+ * Initializes the webcam capture.
+ */
+window.lam.tools.initWebcamCapture = function() {
+	var contentDiv = jQuery('#lam_webcam_div');
+	if (contentDiv.length === 0) {
+		return;
+	}
+	if (navigator.mediaDevices && navigator.mediaDevices.enumerateDevices) {
+		navigator.mediaDevices.enumerateDevices()
+			.then(function(mediaDevices) {
+				mediaDevices.forEach(mediaDevice => {
+					if (mediaDevice.kind === 'videoinput') {
+						contentDiv.show();
+					}
+				});
+			});
+	}
+};
+
+/**
+ * Starts the webcam capture.
+ */
+window.lam.tools.startWebcamCapture = function(event) {
+	event.preventDefault();
+	var canvas = document.getElementById('lam-webcam-canvas');
+	var video = document.getElementById('lam-webcam-videofor');
+	navigator.mediaDevices.getUserMedia({
+			video: {
+				facingMode: 'user',
+				width: { min: 1024, ideal: 1280, max: 1920 },
+				height: { min: 576, ideal: 720, max: 1080 }
+			},
+			audio: false
+		})
+		.then(function(stream) {
+			video.srcObject = stream;
+			video.play();
+		})
+		.catch(function(err) {
+			console.log("An error occurred: " + err);
+		});
+	return false;
+}
+
 window.lam.tools.schema = window.lam.tools.schema || {};
 
 /**
@@ -1788,6 +1833,7 @@ jQuery(document).ready(function() {
 	window.lam.tools.addSavedSelectListener();
 	window.lam.tools.activateTab();
 	window.lam.tools.setInitialFocus();
+	window.lam.tools.initWebcamCapture();
 	window.lam.tools.schema.select();
 	window.lam.html.activateLightboxes();
 	window.lam.html.preventEnter();