mirror of
https://github.com/novnc/noVNC.git
synced 2026-05-27 15:39:41 +00:00
84586c0f17
* Change copyright header This updates the copyright header to say "The noVNC Authors". People who previously had copyright listings are now under the AUTHORS file.
79 lines
2.8 KiB
JavaScript
79 lines
2.8 KiB
JavaScript
/*
|
|
* noVNC: HTML5 VNC client
|
|
* Copyright (C) 2018 The noVNC Authors
|
|
* 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 let 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);
|
|
|
|
|
|
// The goal is to find a certain physical width, the devicePixelRatio
|
|
// brings us a bit closer but is not optimal.
|
|
export let dragThreshold = 10 * (window.devicePixelRatio || 1);
|
|
|
|
let _cursor_uris_supported = null;
|
|
|
|
export function supportsCursorURIs() {
|
|
if (_cursor_uris_supported === null) {
|
|
try {
|
|
const 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 isFirefox() {
|
|
return navigator && !!(/firefox/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));
|
|
}
|
|
|