用Web技术开发桌面应用 OneRing项目介绍 One ring to rule them all, one ring to find them, One ring to bring them all and in the darkness bind them.
OneRing @ OSCamp 2010
Jan 15, 2015
在 OpenSourceCamp + CommunityOne Beijing 2010 (http://beijing2010.opensourcecamp.org/) 上的演讲
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用Web技术开发桌面应用OneRing项目介绍
One ring to rule them all, one ring to find them,One ring to bring them all and in the darkness bind them.
OneRingOneRing是一个跨平台的桌面应用开发库，使用HTML5+CSS3制作用户界面，用Javascript编写交互逻辑，同时提供用写web后端的技术编写后台逻辑。
http://code.google.com/p/onering-desktop/License: LGPL
又一个AIR / Silverlight / XUL Runner?
Yes(只)支持用HTML+CSS+JS制作界面
No支持和操作系统的直接交互支持本地代码调用无sandbox
又一个MFC / GTK+ / Qt / wxWidgets?
Yes通过Javascript API封装系统调用
No无Control、Event等概念
界面全部交由HTML+CSS+JS实现
又一个webOS / Chrome OS?
No是库，不是操作系统
解释无力上demo
为什么做OneRing?希望用web技术来开发桌面应用
Web技术
浏览器
服务器HTTP
HTML CSS JS
设计迭代:1
浏览器
服务器HTTP
HTML CSS JS
App Launcher
监听本地端口打开默认浏览器
问题非本地应用体验
设计迭代:2
封装浏览器
服务器HTTP
HTML CSS JS
App Launcher
监听本地端口包含系统原生浏览器(IE)的自定义窗口
问题IE6 must DIE!
设计迭代:3
WebKit
服务器HTTP
HTML CSS JS
App Launcher
监听本地端口包含WebKit的自定义窗口
问题需要访问系统API
设计迭代:4
WebKit
服务器HTTP
HTML CSS JS
App Launcher
监听本地端口包含WebKit的自定义窗口
onering.js
问题防火墙 annoying
设计迭代:5
WebKit
服务call
backfunction call
HTML CSS JS
App Launcher
包含WebKit的自定义窗口
onering.js
注册callback
代码示例class init: def GET(self): web.header('Content-Type', 'application/json') return json.dumps({'width': 400, 'height': 300, 'url': '/'})
class index: def GET(self): web.header('Content-Type', 'text/html') return """<html><head><script type="text/javascript" src="onering://onering/onering.js"></script></head><body><p>Hello, world!</p><button onclick="javascript:ONERING.exit()">Exit</button></body></html>"""
app = web.application(urls, globals())
if __name__ == '__main__': onering.register_wsgi_app("demo", app.wsgifunc()) onering.loop("demo")
JavaScript
OS App Backend
onering.js ajax/pubsub
三组件通信
多语言支持C API DLL
C API
typedef void (*onering_app_func_t) ( const char* method, const char* path, const char* body, /*OUT*/ const char** response, int* response_len);
int onering_register_app(const char* appname, onering_app_func_t app_func);
int onering_loop(const char* appname);
Python Binding
register_wsgi_app(appname, wsgiapp)
loop(appname)
当前实现基于QtWebKit
Dispatch Url To App Backend
GET onering://myapp/test↓ (via NetworkAccessManager)
app_func = registered_app_funcs.lookup("myapp");app_func("GET", "/test", NULL, &response, &response_len);
onering.jsframe->addToJavaScriptWindowObject("_OneRing", jsapi)
ONERING.Window.prototype.hide = function() { return _OneRing.Window_hide();}
onering.js Is Served By An OneRing App
onering://onering/onering.js
onering.js Is Served By An OneRing App
onering://onering/onering.js
void onering_app(const char* method, const char* path, const char* body, const char **response, int *response_len){ if (strcmp(method, "GET") == 0 && strcmp(path, "/onering.js") == 0) { *response = onering_js.constData(); *response_len = onering_js.size(); } else { // TODO: 404 *response = ""; *response_len = 0; }}
展望
Native GUI
RIA
Web OSHTML5
展望
Native GUI
RIA
Web OSHTML5
OneRing
Join USC++ / Qt / WebKit / Javascript / Python / Documenter /
User / Tester / Code Reviewerhttp://code.google.com/p/onering-desktop/
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