Angular 2/4上的FullScreen请求
发布时间:2020-12-17 17:24:01 所属栏目:安全 来源:网络整理
导读:我正在Angular 2 / Angular 4上构建一个新项目,我需要在我的应用程序上使用Enter FullScreen Button. 我正在搜索,我找到了代码: toggleFullScreen() { if (!document.fullscreenElement // alternative standard method !document.mozFullScreenElement !do
我正在Angular 2 / Angular 4上构建一个新项目,我需要在我的应用程序上使用Enter FullScreen Button.
我正在搜索,我找到了代码: toggleFullScreen() { if (!document.fullscreenElement && // alternative standard method !document.mozFullScreenElement && !document.webkitFullscreenElement && !document.msFullscreenElement ) { // current working methods if (document.documentElement.requestFullscreen) { document.documentElement.requestFullscreen(); } else if (document.documentElement.msRequestFullscreen) { document.documentElement.msRequestFullscreen(); } else if (document.documentElement.mozRequestFullScreen) { document.documentElement.mozRequestFullScreen(); } else if (document.documentElement.webkitRequestFullscreen) { document.documentElement.webkitRequestFullscreen(Element.ALLOW_KEYBOARD_INPUT); } } else { if (document.exitFullscreen) { document.exitFullscreen(); } else if (document.msExitFullscreen) { document.msExitFullscreen(); } else if (document.mozCancelFullScreen) { document.mozCancelFullScreen(); } else if (document.webkitExitFullscreen) { document.webkitExitFullscreen(); } } } 当我使用“ng serve”编译应用程序时,FullScreen Button工作,但它给了我以下错误:
有人可以帮助我,请? 解决方法
HTMLElement和Element的类型没有定义像mozFullScreenElement和ALLOW_KEYBOARD_INPUT这样的属性,所以即使生成的JavaScript代码工作正常,TypeScript编译器也不满意.
快速和肮脏的解决方案是将所有麻烦转移到< any>.更复杂的方法是定义自己的扩展HTMLElement和Element的接口,如下所示: interface MyHTMLElement extends HTMLElement { mozFullScreenElement?: boolean; webkitFullscreenElement?: boolean; // ...etc... } …并将这些元素对象转换为< any>. 编辑:我想自己使用这个全屏代码,所以我发布了一个完整的TypeScript友好版本: interface FsDocument extends HTMLDocument { mozFullScreenElement?: Element; msFullscreenElement?: Element; msExitFullscreen?: () => void; mozCancelFullScreen?: () => void; } export function isFullScreen(): boolean { const fsDoc = <FsDocument> document; return !!(fsDoc.fullscreenElement || fsDoc.mozFullScreenElement || fsDoc.webkitFullscreenElement || fsDoc.msFullscreenElement); } interface FsDocumentElement extends HTMLElement { msRequestFullscreen?: () => void; mozRequestFullScreen?: () => void; } export function toggleFullScreen(): void { const fsDoc = <FsDocument> document; if (!isFullScreen()) { const fsDocElem = <FsDocumentElement> document.documentElement; if (fsDocElem.requestFullscreen) fsDocElem.requestFullscreen(); else if (fsDocElem.msRequestFullscreen) fsDocElem.msRequestFullscreen(); else if (fsDocElem.mozRequestFullScreen) fsDocElem.mozRequestFullScreen(); else if (fsDocElem.webkitRequestFullscreen) fsDocElem.webkitRequestFullscreen(); } else if (fsDoc.exitFullscreen) fsDoc.exitFullscreen(); else if (fsDoc.msExitFullscreen) fsDoc.msExitFullscreen(); else if (fsDoc.mozCancelFullScreen) fsDoc.mozCancelFullScreen(); else if (fsDoc.webkitExitFullscreen) fsDoc.webkitExitFullscreen(); } export function setFullScreen(full: boolean): void { if (full !== isFullScreen()) toggleFullScreen(); } 到目前为止,我已经在Chrome,Firefox和Safari中运行了这一切,所有这些都在macOS上运行,而且效果很好. (编辑:李大同) 【声明】本站内容均来自网络,其相关言论仅代表作者个人观点,不代表本站立场。若无意侵犯到您的权利,请及时与联系站长删除相关内容! |