1 files changed, 69 insertions, 0 deletions
diff --git a/webclients/novnc/core/util/browser.js b/webclients/novnc/core/util/browser.js
new file mode 100644
index 0000000..ab0e7ee
--- /dev/null
+++ b/webclients/novnc/core/util/browser.js
@@ -0,0 +1,69 @@
+/*
+ * noVNC: HTML5 VNC client
+ * Copyright (C) 2012 Joel Martin
+ * Licensed under MPL 2.0 (see LICENSE.txt)
+ *
+ * See README.md for usage and integration instructions.
+ */
+
+import * as Log from './logging.js';
+
+// Touch detection
+export var isTouchDevice = ('ontouchstart' in document.documentElement) ||
+                                 // requried for Chrome debugger
+                                 (document.ontouchstart !== undefined) ||
+                                 // required for MS Surface
+                                 (navigator.maxTouchPoints > 0) ||
+                                 (navigator.msMaxTouchPoints > 0);
+window.addEventListener('touchstart', function onFirstTouch() {
+    isTouchDevice = true;
+    window.removeEventListener('touchstart', onFirstTouch, false);
+}, false);
+
+var _cursor_uris_supported = null;
+
+export function supportsCursorURIs () {
+    if (_cursor_uris_supported === null) {
+        try {
+            var target = document.createElement('canvas');
+            target.style.cursor = 'url("data:image/x-icon;base64,AAACAAEACAgAAAIAAgA4AQAAFgAAACgAAAAIAAAAEAAAAAEAIAAAAAAAEAAAAAAAAAAAAAAAAAAAAAAAAAD/////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////AAAAAAAAAAAAAAAAAAAAAA==") 2 2, default';
+
+            if (target.style.cursor) {
+                Log.Info("Data URI scheme cursor supported");
+                _cursor_uris_supported = true;
+            } else {
+                Log.Warn("Data URI scheme cursor not supported");
+                _cursor_uris_supported = false;
+            }
+        } catch (exc) {
+            Log.Error("Data URI scheme cursor test exception: " + exc);
+            _cursor_uris_supported = false;
+        }
+    }
+
+    return _cursor_uris_supported;
+};
+
+export function isMac() {
+    return navigator && !!(/mac/i).exec(navigator.platform);
+}
+
+export function isIE() {
+    return navigator && !!(/trident/i).exec(navigator.userAgent);
+}
+
+export function isEdge() {
+    return navigator && !!(/edge/i).exec(navigator.userAgent);
+}
+
+export function isWindows() {
+    return navigator && !!(/win/i).exec(navigator.platform);
+}
+
+export function isIOS() {
+    return navigator &&
+           (!!(/ipad/i).exec(navigator.platform) ||
+            !!(/iphone/i).exec(navigator.platform) ||
+            !!(/ipod/i).exec(navigator.platform));
+}
+