I have a Delphi VCL application which I'm using to show some pictures and I would like to know if there is any possibility to transform it into a browser plugin (like firefox, google chrome etc ) in order to load it remotely, like a java applet.
for all of them the answer is NO. even for IE it is sometimes difficult...VCL applications means win32/64 development in general, browsers are more 'related' to web development. you can reconsider and try to resolve this by using an already existing platform which can be easily integrated into web browsers like Shockwave (yeah, I don't like to give links to wikipedia...) or another similar tool.
You can use VirtualUI from CybeleSoft to run your Windows app in a browser. You still need to set up your backend server with database etc, and make sure that some operations are blocked - you don't want someone to browse through your server files ;-)
There are options:
ActiveX plugin (you might need to enable ActiveX support in browser or use a special plugin to enable it)
NPAPI plugin (will be deprecated in Chrome in late 2014). See question: How to embed Delphi VCL form into HTML page using NPAPI?
Take a look at the samples on Raudus. It might be what you are looking for. It will be interesting for you to read this about VCL compatible component set for the web.
Related
I'm planning to use list & label as a reporting tool for my MVC Web Application, I downloaded the trial version and the sample code was really helpful.
I'm almost settled on using this as my app's reporting tool but I'm thinking twice on their web app report designer tool, because I needed to install the chrome extension before I can use it.
I'm using version LL v.20
So my questions are:
Is the chrome extension really needed for the designer to work? I'm thinking that if my app goes live, will I require my clients to install this plugin first?
Will the designer have issues on other browser? So far I haven't seen extensions/plugins for IE (only Fireforx, Safari, Opera, Chrome).
PS. If all else fail, can you suggest an alternative for this? The reporting tool that I need is web-based and allows end-users to edit the reports. Thanks!
1) Yes, you need to install the plugin on the client side.
2) For IE, there's a Designer ActiveX. Simply open your existing app in IE, you should be offered to install the OCX right away.
As to your general concerns:
We plan to replace the plugins with a client-side application that can be one-time installed with a couple of clicks in LL21. The reasoning is the step-by-step deprecation of plugins by most browser vendors. Changing between the plugins and the new designer app will be quite easy. The new designer will also support previewing at design time. Depending on when you plan to ship your application it may well be worth the wait till October.
I have tried List and Label Web Designer and found that installing additional application for all users is not a good idea. Will look for another solutions, may be FastReport.Net. That online designer is realy online and can work not only on Windows.
I need to create a firefox plugin that allows a user to take screenshots of any part of their desktop and have them uploaded to a server. There seems to be lots of plugins for screen capturing a webpage, but nothing for capturing anything outside of firefox. So after a little research I have not found much information on how this might be possible. I don't want to resort to a using a java applet but I will if that is my only option.
Does anyone have advice on how I might create such a feature?
Thanks
I don't think a Firefox addon is the most appropriate approach here. Maybe split the task into a Firefox addon to offer the "upload to a server" component and a native app to do the desktop screenshot (or just integrate with existing screenshot tools).
If you're worried about complicating the installation process for end users, you could look into bundling the addon component and native app into a single installer (e.g. MSI on Windows, RPM on Linux, etc.). You'll have to come up with different apps for each platform you want to support (and maybe even each version - e.g. Windows XP vs Windows 10).
Whatever you decide, you'll probably need to create a more specific question to get further help here (there's no simple Firefox.Addons.API.TakeScreenShot() answer I'm afraid).
Also make sure you're using the right terminology - a plugin is the deprecated NPAPI approach whereas addons are still supported.
I'm actually working on taking native desktop screenshots just in the last coupel of days. I'm using js-ctypes. My work goal is the same exact thing to, upload to server. If you would like to collaborate I am very open to it! We can chat about it on #jsctypes irc channel :) irc://moznet/jsctypes (Mibbit IRC WebApp) If you don't know js-ctypes thats ok i can handle that while you can handle uploading techniques, and an editor on canvas :) The editor is a huge part of it, you can see my ideas/plans here: https://github.com/Noitidart/NativeShot/wiki/NativeShot
I'm really really interested in a collab on this!
I'm still working on windows right now, the color is messed up: https://github.com/Noitidart/NativeShot/tree/digitanks-method
I was just about to start OSX work following this example here: https://developer.apple.com/library/mac/samplecode/SonOfGrab/Introduction/Intro.html and here: Take ScreenShot without Window
You can install the addon from that branch and click the icon that gets added to the toolbar, it will take a screenshot with 3sec delay and then append it to the body of the selected tab. (Windows only right now)
Doneskis baby check it out: https://addons.mozilla.org/en-US/firefox/addon/nativeshot/
Got some quirks. Released it as v1.0 though. I'm working on Android support, pretty close. I need to flesh out the editor tools. Please let me know if you're willing to collaborate.
Story:
I have written a HTML Merge Compiler that can merge resource's/assets into one single HTML file (minify it to the max) and compiles Javascript with the google enclosure compiler. I have written this compiler to speed up loading and interpreting the code and to obfuscate the code to protect a little bit (script kiddie protection). Major reason was/is speed and to make it compact.
This is working OK with reliable results and i use this in PhoneGap applications/games. I have also written a javascript library that encapsulate all platforms that works with standard HTML/CSS without the need to change the code, it works also in the browser, with a touchscreen or without or on any device or operating system. Write once, publish many ;-). The idea around it is that is working always, always operate the same but can use device specific things when available but does never fail (when something is not there, for example a vibrate functionality).
Anyway, most frameworks (like PhoneGap) concentrate on Mobile Platforms but i want to port it also to desktop platforms like Windows, OSX and maybe Linux. For Windows I have wrote an Delphi Application that loads the HTML in a TEmbeddedWB object (is Internet Explorer actually) but the 'problem' is that it is only suitable to Windows and IE is not the fastest browser around, especially when it is embedded (do not why it is slower than the browser itself). For example, when i load the compiled code in Firefox and/or Google Chrome it is blazing fast (you do not notice it is javascript ;-)).
EDIT:
Pre release of IE10 for Windows 7 is just launched, installed it and lag is gone!
You can download it from here:
http://www.microsoft.com/en-us/download/details.aspx?id=35709
Introduction to my question:
I have tried XULRunner of Mozilla a long time ago but the first time was not a pleasure to me and also i tried it today again but can't get it to work. Get a parse error in the main xul file of the project, window is an undefined entity. ??? I create a sample project like: http://mdn.beonex.com/en/Getting_started_with_XULRunner.html
I do not know what to do about this error. Also i think documentation is not up-to-date? Most documentation is from around 2006.
The question, what i want to know:
Before i am going to waste my time (see also introduction), is it
possible to create frameless (full-screen) desktop executables with
use of XULRunner like with PhoneGap?
Is it possible to create cross-platform applications with XULRunner, i mean, does it really work seamless. Where can i find a ready-to-publish example of a XULRunner project and is it possible to load local HTML file(s) like in PhoneGap?
It is possible and allowed to access external resources?
Long story, but maybe there is somebody that have tried this before and can lead me to choose the right direction.
is it possible to create frameless (full-screen) desktop executables with use of XULRunner like with PhoneGap?
Yes. You use disablechrome attribute to remove the window frame and sizemode="maximized" to have it open full-screen. Alternatively you can use the full-screen API if you want your application to run in a normal window and only switch to full-screen mode on request.
Is it possible to create cross-platform applications with XULRunner
Yes. There are things like menus that work very differently on OS X but most of the time you don't need to care what operating system your application runs on (Windows, Linux and Mac OS X supported).
Where can i find a ready-to-publish example of a XULRunner project
See documentation for a XULRunner application example. For "ready-to-publish" you would need an installer which doesn't come with the platform.
is it possible to load local HTML file(s) like in PhoneGap?
Yes. The top-level window has to be XUL but you can use some very minimal code here - essentially a single <iframe flex="1"/> tag. You can load HTML pages into that frame then.
It is possible and allowed to access external resources?
Yes, XULRunner applications have full privileges and can access files on disk as well as web resources without any restrictions.
I have this unusual requirement from a client, and I am not quite sure how to proceed.
My client needs to select a folder from his computer in IE and POST the files within that folder to the server. I was thinking of an ActiveX control. Could you point me to the right way? Thank you.
It's a bit of a tricky question; You can certainly upload files using WinHttp or WinInet (forget which works better for it) but you could run into issues with proxy settings.
If I were you I'd write a plugin using FireBreath, which would then work on all major browsers instead of just IE (works both as an ActiveX control and as a NPAPI plugin). There is a library for FireBreath that though poorly documented allows you to upload files via HTTP using libcurl and openssl, or you could figure out how to do it with WinInet/WinHTTP (do some google searches, several possible leads come up).
Using the default TWebBrowser makes things easy to embed a web browser. Unfortunately the one that comes in by default is IE<n>.
I'm wondering how does one integrate a Gecko or WebKit one.
Are there VCL examples somewhere?
If not, how would one go about doing it?
Where's the best place to find the core for Gecko and/or WebKit in an embeddable format?
TWebBrowser is IE. It is not a plugable construction for browsers. You can have other browsers integrated in your application. See
http://www.adamlock.com/mozilla/
http://delphi.mozdev.org/articles/taming_the_lizard_with_delphi.html
http://ftp.newbielabs.com/Delphi%20Gecko%20SDK/
Time has moved on
This answer is from '08 and since then time has moved on. The links don't work anymore and there are probably better alternatives now.
A viable alternative is CEF - Chromium Embedded Framework which encapsulates the Chromium browser which by itself encapsulates WebKit. This library is provided as plain DLLs with an exported C API.
There's a delphi interface available at code.google.com/p/delphichromiumembedded
I've been using it with my own interface implementation and works great, though not so easy to properly use as THTML or IE, but great for whoever needs a powerful and embeddable browser.
Edit: Lars beat me to it, unfortunately
Well there is an ActiveX control based on the Gecko engine that tries to present an exact copy of the IWebBrowser API (which TWebBrowser uses).
You can find it here: http://www.iol.ie/~locka/mozilla/control.htm
Unfortunately it looks like it hasn't been updated in a while. The last version is based on Gecko 1.7.12 and I believe Gecko is currently up to 1.9.x (used in Firefox 3)
An alternative is THTMLViewer component. I have used this for some years.
This is now available free. the web siteis here http://pbear.com/htmlviewers.html. According to the songbeamer web site (http://www.songbeamer.com/delphi/) there is a Delphi 2009 version available.
Over the last three years I have come across very little in the way of embedding Gecko in Delphi. One library that showed up fairly late in the game (for me) was the GeckoSDK project on SourceForge. I did a lot of work early on trying to make embedded Gecko work correctly in Delphi. Our first attempt at a Gecko rendering engine based internal "browser" was built using Delphi and Gecko 1.8. We have since moved on and our browser is now a XULRunner application. I have pieces of code laying around on my hard drive yet from that early attempt that I have not deleted yet.
When Mozilla releases Gecko 2.0 I think it will become a lot easier to embed in Delphi. The XPCOM object system in Gecko makes it very difficult to embed because most everything returns an NS_RESULT. Strings especially were hard.
edit: I just looked through my old bookmarks (almost all of which are dead) and searched for a new url for the Japanese language "bagel" browser based on Gecko and found it here,
http://github.com/plus7/bagel/tree/master/Legacy.
This is probably your best bet for some excellent code to start from. Unfortunately the comments in the code are Japanese and the author never responded to questions.