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Archive for November 21st, 2007
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Mozilla Labs Blog » Blog Archive » Prism
In software on November 21, 2007 at 10:47 amPersonal computing is currently in a state of transition. While traditionally users have interacted mostly with desktop applications, more and more of them are using web applications. But the latter often fit awkwardly into the document-centric interface of web browsers. And they are surrounded with controls–like back and forward buttons and a location bar–that have nothing to do with interacting with the application itself.

Mozilla Labs is launching a series of experiments to bridge the divide in the user experience between web applications and desktop apps and to explore new usability models as the line between traditional desktop and new web applications continues to blur.
Unlike Adobe AIR and Microsoft Silverlight, we’re not building a proprietary platform to replace the web. We think the web is a powerful and open platform for this sort of innovation, so our goal is to identify and facilitate the development of enhancements that bring the advantages of desktop apps to the web platform.
The first of these experiments is based on Webrunner, which we’ve moved into the Mozilla Labs code repository and renamed to Prism.
Prism

Prism is an application that lets users split web applications out of their browser and run them directly on their desktop.

Prism lets users add their favorite web apps to their desktop environment:

When invoked, these applications run in their own window:

They are accessible with Control-Tab, Command-Tab, and Exposé, just like desktop apps. And users can still access these same applications from any web browser when they are away from their own computers.
The Best of Both Worlds
Prism isn’t a new platform, it’s simply the web platform integrated into the desktop experience. Web developers don’t have to target it separately, because any application that can run in a modern standards-compliant web browser can run in Prism. Prism is built on Firefox, so it supports rich internet technologies like HTML, JavaScript, CSS, and <canvas> and runs on Windows, Mac OS X, and Linux.
And while Prism focuses on how web apps can integrate into the desktop experience, we’re also working to increase the capabilities of those apps by adding functionality to the Web itself, such as providing support for offline data storage and access to 3D graphics hardware.

The User Experience
We’re also thinking about how to better integrate Prism with Firefox, enabling one-click “make this a desktop app” functionality that preserves a user’s preferences, saved passwords, cookies, add-ons, and customizations. Ideally you shouldn’t even have to download Prism, it should just be built into your browser.
We’re working on an extension for Firefox that provides some of this functionality. For more information about the user experience we hope to achieve in Prism, see Alex Faaborg’s blog post. For some of the technical details and new features found in Prism, see Mark Finkle’s blog post.
Getting Started with Prism
We have an early prototype for this working today on Windows, with work continuing on Mac and Linux (for which we should have builds available soon).
To try out the prototype, download and install it: Download Prism for Windows.
Then start Prism. It will display an Install Web Application dialog.

Enter the URL of the application you want to use in Prism (e.g. mail.google.com), a name for the application (e.g. Gmail), and pick where you’d like to create shortcuts to the application.
Then press the OK button. Prism will create shortcuts to the application in the locations you specified and then start the application.
How to Get Involved
Prism is just the first of many experiments we hope to conduct around improving the usability of web applications. It’s open source, like everything we do, and we’re interested in hearing from and working with anyone interested in further developing this concept.
- Discuss, debate and add to the design in the forum. Report bugs in Bugzilla.
- Get the source code, extend it, fix bugs and/or submit patches.
The project lead for Prism is Mark Finkle and contributors include Cesar Oliveira, Wladimir Palant, Sylvain Pasche, Alex Faaborg, and Myk Melez.
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关于Linux操作系统下C语言编程的注意事项
In C/C++, howto, linux on November 21, 2007 at 12:28 am关于Linux操作系统下C语言编程的注意事项 — IT技术 – 赛迪网
一、工具的使用
1、学会使用vim/emacs,vim/emacs是linux下最常用的源码编辑具,不光要学会用它们编辑源码,还要学会用它们进行查找、定位、替换等。新手的话推荐使用vim,这也是我目前使用的文本编辑器。
2、学会makefile文件的编写规则,并结合使用工具aclocal、autoconf和automake生成makefile文件。
3、掌握gcc和gdb的基本用法。掌握gcc的用法对于构建一个软件包很有益处,当软件包包含的文件比较多的时候,你还能用gcc把它手动编译出来,你就会对软件包中各个文件间的依赖关系有一个清晰的了解。
4、掌握svn/cvs的基本用法。这是linux,也是开源社区最常用的版本管理系统。可以去试着参加sourceforge上的一些开源项目。
二、linux/unix系统调用与标准C库
系统调用应用软件与操作系统的接口,其重要性自然不用说,一定要掌握。推荐学习资料为steven先生的UNIX环境高级编程(简称APUE)。
三、库的学习
无论是在哪个平台做软件开发,对于库的学习都很重要,linux下的开发库很多,我主要介绍一下我常常用到的一些库。
1、glib库glib 库是gtk+和gnome的基础库,并具是跨平台的,在linux、unix和windows下都可以用。glib库对于linux平台开发的影响就像 MFC对windows平台开发的影响一样,很多开源项目都大量的使用了glib库,包括gimp、gnome、gaim、evolution和 linux下的集群软件heartbeat。因为glib库自带有基本的数据结构实现,所以在学习glib库的时候可以顺便学习一下基本的数据结构(包括链表、树、队列和hash表)。
2、libxml库libxml是linux平台下解析XML文件的一个基础库,现在很多实用软件都用XML格式的配置文件,所以也有必要学习一下。
3、readline库readline 库是bash shell用的库,如果要开发命令行程序,那么使用readline库可以减少很多工作量,比如bash里的命令行自动补全,在readline里就已经有实现,当然你也可以用自己的实现替代库的行为。readline库有很多网站介绍的,只要google一下readline就可以找到一堆了。
4、curses库curses 库以前是vi程序的一部分,后来从vi里提取出来成为一个独立的库。curses库对于编写终端相关的程序特别有用,比如要在终端某一行某一列定位输出,改变终端字体的颜色和终端模式。linux下的curses库用的是GNU实现的ncurses(new curses的意思)。
5、gtk+和KDE库这两个库是开发GUI应用程序的基础库,现在linux下的大部份GUI程序都是基于这两个库开发的,对于它们 的学习也是很有必要的。
四、网络的学习
网络这个东西太宽了,推荐学习资料steven先生的UNIX网络编程(简称UNP)和TCP/IP协议详解,更进一步的话可以学习使用libnet编写网络程序
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关于Linux操作系统下C语言编程的注意事项
In C/C++, howto, linux on November 21, 2007 at 12:28 am关于Linux操作系统下C语言编程的注意事项 — IT技术 – 赛迪网
一、工具的使用
1、学会使用vim/emacs,vim/emacs是linux下最常用的源码编辑具,不光要学会用它们编辑源码,还要学会用它们进行查找、定位、替换等。新手的话推荐使用vim,这也是我目前使用的文本编辑器。
2、学会makefile文件的编写规则,并结合使用工具aclocal、autoconf和automake生成makefile文件。
3、掌握gcc和gdb的基本用法。掌握gcc的用法对于构建一个软件包很有益处,当软件包包含的文件比较多的时候,你还能用gcc把它手动编译出来,你就会对软件包中各个文件间的依赖关系有一个清晰的了解。
4、掌握svn/cvs的基本用法。这是linux,也是开源社区最常用的版本管理系统。可以去试着参加sourceforge上的一些开源项目。
二、linux/unix系统调用与标准C库
系统调用应用软件与操作系统的接口,其重要性自然不用说,一定要掌握。推荐学习资料为steven先生的UNIX环境高级编程(简称APUE)。
三、库的学习
无论是在哪个平台做软件开发,对于库的学习都很重要,linux下的开发库很多,我主要介绍一下我常常用到的一些库。
1、glib库glib 库是gtk+和gnome的基础库,并具是跨平台的,在linux、unix和windows下都可以用。glib库对于linux平台开发的影响就像 MFC对windows平台开发的影响一样,很多开源项目都大量的使用了glib库,包括gimp、gnome、gaim、evolution和 linux下的集群软件heartbeat。因为glib库自带有基本的数据结构实现,所以在学习glib库的时候可以顺便学习一下基本的数据结构(包括链表、树、队列和hash表)。
2、libxml库libxml是linux平台下解析XML文件的一个基础库,现在很多实用软件都用XML格式的配置文件,所以也有必要学习一下。
3、readline库readline 库是bash shell用的库,如果要开发命令行程序,那么使用readline库可以减少很多工作量,比如bash里的命令行自动补全,在readline里就已经有实现,当然你也可以用自己的实现替代库的行为。readline库有很多网站介绍的,只要google一下readline就可以找到一堆了。
4、curses库curses 库以前是vi程序的一部分,后来从vi里提取出来成为一个独立的库。curses库对于编写终端相关的程序特别有用,比如要在终端某一行某一列定位输出,改变终端字体的颜色和终端模式。linux下的curses库用的是GNU实现的ncurses(new curses的意思)。
5、gtk+和KDE库这两个库是开发GUI应用程序的基础库,现在linux下的大部份GUI程序都是基于这两个库开发的,对于它们 的学习也是很有必要的。
四、网络的学习
网络这个东西太宽了,推荐学习资料steven先生的UNIX网络编程(简称UNP)和TCP/IP协议详解,更进一步的话可以学习使用libnet编写网络程序
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