I have to deal with scanner from WEB-page. I can use Active-X (TWAIN / WIA) and Silverlight (WIA) on Windows (may be Flash also?). What technologies may I use on Linux to access scanner from web-page?
Thank you in advance!
You can also develop NPAPI plugin that interact with scanner (TWAIN/WIA). That also support scripting and you can access to JavaScript methods, objects and DOM model in scope of your HTML page. For IE you can develop IE plugin like toolbar.
For example, there's an open source project called FireBreath which allows you to write a plugin for IE (ActiveX) and NPAPI (Firefox, Opera, Chrome etc.) from a single codebase.
You can use Java Applet. Have you seen JTwain: http://asprise.com/product/jtwain/faq.php. It's a commercial tool but might be of help to point you in the right direction
you can try SANE for scanning in Linux. It's open source: http://www.sane-project.org/ .
Related
I would like to know if it's possible to develop an extension that allows to open a link with another browser : If in Chrome I click on a link that is configured in such extension, it opens FF or IE with this link.
I didn't find any extension (except extension that have a frame in a chrome tab), so does that mean that there is a technical limitation to do that ?
Best regards
I did something for FF what could be modified to do just that.
I have used the ability to execute shell commands from an extension, and configured the call to launch a 3rd party application.
Look for examples on nsIProcess
In chrome you can use the NPAPI plugins: http://code.google.com/chrome/extensions/npapi.html
Unfortunately, I think that kms is correct in saying that you cannot execute native code in a Chrome Extension, and must therefore pair your extension with an NPAPI Plugin and have them talk to one another. It was one of the most difficult programming tasks I've ever done, although the NPAPI Plugin was made easier by basing it on FireBreath, so at least I didn't need to write very much C++.
UPDATE: Since 2014 or so, Native Messaging is included in Chrome's Web Extensions API and, mercifully, NPAPI is gone.
I want to create a new application (which I will sell) that uses web browser control to automatically post things on the internet etc.
I did some research, and it looks like the primary choice for most people is .NET webbrowser control (via an instance of IE).
I don't want to do this because I want customers that own a Mac and Linux to be able to use my software.
With that said, are there any web browser control classes or toolkits available that can work on all OSes (e.g. something that uses Java?)
Thanks in advance!
UPDATE:
Web browser control is basically the ability for a program to act like a human and open a web browser and go to websites, fill out forms, check email (lol) etc.
Firefox, Chrome, Safari. I think virutally everything but IE works on all the OS's. Not suprising really when you think it's made by microsoft.
Selenium libraries let you create scripts (with a GUI or one of the supported languages [it has got most of the popular ones like Java, Python etc.]) for browser automation on all popular browsers (including chrome, which works on all OSes like mentioned by other answers).
What technologies are used to power Quake Live?
Specifically, how do you create a web application that makes such extensive use of 3D in the browser? The service requires you to download and install a plug-in in order to play. How do you create such a plug-in, and how does it interact with the web site?
Browser programs are very simply, programs. They are given an interface to interact with the browser, but beyond that, they can do anything a normal native application can do, like use DirectX or OpenGL.
Internet Explorer registers plugins using ActiveX. Firefox, Chrome, Safari and most other browsers use Netscape's NSPlugin API.
The MDC has plenty of documentation on writing plugins for Firefox.
There is also a question on SO about writing plugins for IE.
How can i create a browser component in J2ME which can display web pages inside an application? Is there any API available for this ? or is this really possible ?
My experiences:
J2MEPolish has HTML browser. It costs 990EUR per app and you need to use J2MEPolish to use it. But be warned: their HTML browser has many issues, it supports forms and other advanced elements, but if you try to get something you like then rendering quality is bad (e.g. no spacing, defaults to center view etc). Free evaluation/GPL is available.
PocketLearn J2ME HTML Component - http://www.j2mehtml.com/ seems to have less features but much better rendering quality. This is not free as well, and there they do not provide any useful evaluation download or public license fee info.
J2ME cHTML browser is free and open source, but no docs (and probably no quality too)
As far as I know, the only browser written in J2ME is Opera Mini (not to get confused with Opera Mobile, which is a different thing). It runs amazingly good even on very low end phones, but most of the HTML handling is done on a special server that Opera hosts, and the client gets optimizes, preformatted, binary data to display.
Doing everything on the phone using Java might be hard or even impossible. You'd be able to code up a browser that displays very basic HTML pages, but doing it right even for more complex pages seems to be impossible on J2ME because of the limited memory and CPU.
I could imagine that some high end phones come with a custom API to embed a native browser into you Midled, but the standart J2ME definitely does not have this.
The only portable way to display a web page in the browser is with:
MIDlet.platformRequest(String URL);
On some mobile, this will terminate the J2ME application though.
The Content handling API is what you're looking for.
That's JSR 211.
Unfortunately, to do what you want, you would need to find a handset that contains an implementation of JSR211 that is both complete and correct.
That doesn't exist yet as far as I know.
The only J2ME emulator that I know that may allow you to launch a web browser window (outside of a MIDlet) is the Nokia Series60 emulator. That doesn't have a complete implementation of JSR 211.
Try this
http://sourceforge.net/projects/fire-j2me/
Unfortunatley there are no built-in components in Java ME to render html.
You can try htmlBrowser component of the j2mePolish toolkit (www.j2mepolish.org)
I've been utlising a "web browser control" in desktop based applications (in my case Windows Forms .NET) for a number of years. I mostly use it to create a familiar flow-based user interface that also allows a seamless transition to the internet where required.
I'm really tired of the IE browser control because of the poor quality html it generates on output. Also, I guess that it is really just IE7 behind the scenes and so has many of that browser "issues". Despite this, it is quite a powerful control and provides rich interaction with your desktop app.
So, what other alternatives to the IE browser control are there? I looked at a Mosaic equivalent a year ago but was disappointed with the number of unimplemented features, maybe this has improved recently?
hmm..Interestingly
Mozilla seems to provide ActiveX control
K-Melon is another Gecko based browser control
Popular layout engines:
Mozilla Gecko
KHTML
WebKit (based on KHTML)
Though I'm not sure how easy it is to embed those in a .Net app.