I am writing a java applet in hopes that my users can use chrome's tab cast to show the applet on a larger screen. However, when I cast the tab, I only see the black background on the TV, even though the applet shows up in the actual browser.
I am using Java web start to launch the applet. Here is my javascript that does that:
<script src="https://www.java.com/js/deployJava.js"></script>
<script>
var attributes = {
code:'com.gigagrand.CastThat.CastThat', width:600, height:300} ;
var parameters = {jnlp_href: 'castthat_applet.jnlp'} ;
deployJava.runApplet(attributes, parameters, '1.7');
</script>
I suspect that my problem may lie in how I am launching my applet. Or Tab casting just doesn't support Java Applets
You should be able to mirror even if there is an applet running. i.e. Chromecast tab mirroring works for that scenario as well. The only case that you may run into rendering issues is if you try to mirror some protected content running in silverlight on windows.
Related
I am trying to make a custom web browser inside an electron application. Using webview (because iframe is not loading some necessary web pages) I can load a web page.
Then trying to write something into the web page´s input by clicking on the react-simple-keyboard which causes blur event, so input loses focus.
I figured out, that this approach would not work directly, so via ipc communication I am trying to resend the key button value and then set it to the window with const {keyboard} = require("#nut-tree/nut-js"); keyboard.type(args.value);
In my input, above the webview tag, it works like a charm, but I am not able to type inside the webview.
Can anyone help me to solve this problem or does anyone know a perfect solution how to use other OSK in electron app or how to open native windows osk on input focus? Thank you in advance.
I'm not sure how you'd accomplish that with this library. But you can just use Window's default on-screen-keyboard to accomplish that. Here is a link to how enable it. windows support
You should also use a BrowserView instead of a Webview, as the Webview is not guaranteed to be present in future versions and it's API is unstable.
The BrowserView doesn't work like an HTML element though and you should read the docs here.
But anyways, just use the system's default and you should be fine.
Also, if you're interested, I'm developing a web browser with Electron (in fact, I'm currently writing this using that browser) and as far as I can say, it's written pretty simply and anyone should understand most of it, so take a look if you're in trouble. But I am no expert and you shouldn't rely on my code as a standard of any kind, really.
Well, I might have just found an answer for you.
Firstly, as I mentioned, you should use a BrowserView instead of webView for your external content, and this time it is a requirement for this method to work. I would create a BrowserWindow with the controls at the top, then place a BrowserView to act as a "browser" and create another BrowserView at the bottom and load in the keyboard html file. And then, when a key is pressed on the virtual keyboard, you should send an ipc message to the main script with the information of what key was pressed(it should be done via a preload script for the OSK BrowserView). In the main script, once you recieve the ipc message (via ipcMain.on()) you should then send an input event to the BrowserView containing your external content. That's done by calling contents.sendInputEvent(Event), so it has to be a main script. Here is a link to contents.sendInputEvent(Event), BrowserView (link) and preload script as well as ipc communication (link).
As for invoking the keyboard once you click on the input element, you could probably do it with a preload script for your "browser's" BrowserView, if you can find how you can check whether the focused element is an input element or something like that, and call an ipc message to then hide or show the keyboard. (Hiding and shwoing the keyboard could be done by calling BrowserWindow.addBrowserView(BrowserView) or BrowserWindow.removeBrowserView(BrowserView). But you would have to search the documentation yourself for those methods as I can't write anymore right now. Documentation could anwser any of your questions if you search for it there.
From the command line, or from an application, I want to open a NEW browser instance with a specified size and position, and pointed to a specific URL. I want to open a browser that acts like a dialog box. Ideally, I'd like to be able to disable "decorations" (like tabs, bookmarks, etc.). I do not want to open a new tab or pop-up window from an existing browser instance.
I know Electron or Node Webkit do this, but I just want to open a browser as that acts as a GUI front end for whatever back end I'm building.
I'd be happy if it would work for a specific browser; say, Chrome, or Chromium.
So, for instance, a Python app (or C/C++, Java, etc.) could start it's web server, then open a browser of the proper size, pointed to "localhost:xxxx/whatever.html", and serve up data via AJAX.
Kind of a universal single page app front end...
UPDATE (SOLUTION?)
The answer seems to be in two parts: 1) Opening the browser with command line switches, and 2) Resizing the window in JavaScript.
Using chromium (or Chrome), on the command line:
chromium-browser --new-window --app=http://192.168.1.80:8080/index.html
Then, within your JavaScript:
window.resizeTo(800,500)
This will bring up a new window and resize it.
This is great. Now, I can make an app in any language that allows me to open a web server. The user interface is done in HTML, CSS, and JavaScript. The browser is opened from within the application using the proper command line switches.
Electron does simply open up one or multiple browser windows, you can set them to any url via BrowserWindow.loadURL(url) this could be https://google.com https://localhost:1337 (Your backend webserver) or a local HTML file. The BrowserWindow can be created with information such as size and position.
The only alternative would be something like Qt HTML5 applications that use Qt WebEngine, but this does basically the same thing since Electron and Qt WebEngine use chromium.
Also, there is no point in a single page app that runs without JavaScript.
I am having an issue in IE 10 and IE 11 where if the audio device is disabled my website will not load. Looking at the console the load does not progress past loading the first audio item. I am using soundjs does anyone know if there is a way to detect if the hardware is disabled in the browser in order for me to add some kind of error message asking the user to please enable their sound device?
From the documentation
The function:
createInstance ( src [startTime=null] [duration=null] )
Works like this:
Creates a AbstractSoundInstance using the passed in src.
If the src does not have a supported extension or if there is no
available plugin, a default AbstractSoundInstance will be returned
that can be called safely but does nothing.
If you can test for the default AbstractSoundInstance, then you'll know when plugins are not available on the clients browser.
This looks like an issue with soundJS because when testing on createjs.com/soundjs the issue is re-created.
Visit createjs.com/soundjs
Head down to test the sounds and click to play.
Disable your machines sound bu right clicking in the tool bar and selecting disable.
Reload the page.
Now sounds do not load.
Side by side comparrison
I use the webbrowser control to display a webpage from an application, but it just displayed a white screen. I tried Internet Explorer and it did not display anything either.
Any ideas how to fix this problem.
Thanks a lot in advance.
Windows Phone Emulator requires a DirectX 10 or above capable graphics card with a WDDM 1.1 driver. I assume that you got an error message on first start of the emulator that your graphic adapter isn't capable for all functions the emulator is using and that this may impact XNA games and sometimes silverlight like this one:
If your graphic adapter does not fully support DirectX 10 or doesn't has a WDDM 1.1 driver you will only see a white screen instead of the rendered webpage. This also affects all controls using MultiScaleImage, including the webbrowser control. As far as I know there is no solution for this at the moment.
To check if the emulator is running the required GPU emulation take a look at the arrow to open the application list and if it points to the right or left. If it points to the left, NO GPU is available - if it points to the right (as on the hardware phone itself) the GPU is available and rendering should work as expected.
See also this page in the msdn.
You haven't said if you're testing a local/private page or one on the web.
Also test other pages on the web. Can you view anything or just your own page.
If you can't see pages on the public web then you have a networking issue
If you can see public pages but not locally hosted ones then you probably have a different networking issue. If you're on an actual device or the emulator will likely greatly affect this.
The other things it may are:
you're trying to view a page that is to compilcated to be displayed (if there is such a thing - test with a very simple static page first)
the page uses useragent detecction and doesn't recognise the user agent and so is serving nothing
the page has complex javascript which runs before the page is rendered and the javascript is failing and so the page is never displayed.
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)