keyboard inputs don't work in html-overlay + linux

[bgbnbigben]

Using an field inside the html-overlay plugin doesn't seem to accept input. On my linux64 machine each keystroke triggers an error similar to the following:

[0402/112706:ERROR:browser_main_loop.cc(234)] Gdk: IA__gdk_keymap_get_entries_for_keyval: assertion 'keyval != 0' failed

I haven't tested this on android nor iphone yet but I suspect this issue likely occurs on those platforms too.

[warrenseine]

The error you've got looks related to your installed GTK version, which might be incompatible with the CEF framework we use.

• Does this happen with other HTML elements?
• Did you install the supported libraries as documented?
• What's your operating system?

I haven't tested this on android nor iphone yet but I suspect this issue likely occurs on those platforms too.

I wouldn't expect that. On mobile platforms, we're using a completely different technology to render HTML content (webview vs. embedded browser).

[bgbnbigben]

It happens with both <input> and <textarea>, whether or not they're subelements of a <form> or not.
I have both libgtk2.0-dev and libgtkglext1-dev installed on Ubuntu 14.04 -- though it's running under a virtualbox, which might be an issue. I also have cef_binary_3.1750.1638_linux64 installed as per the instructions in the README.

There are also two start-up log messages that I hadn't noticed but don't believe are part of the problem:

[0403/081811:ERROR:proxy_service_factory.cc(103)] Cannot use V8 proxy resolver in single process mode
[0403/081811:WARNING:proxy_service.cc(890)] PAC support disabled because there is no system implementation

[JMLX42]

I confirm the bug does exist on Linux.

@bgbnbigben did you find a solution?

[JMLX42]

Hello,

the fix is rather simple: we have to fill the CefKeyEvent::native_key_code and CefKeyEvent::unmodified_character properties like this:

keyEvent.windows_key_code = key;
keyEvent.native_key_code = key;
keyEvent.unmodified_character = key;

You have to do this in all keyboard callbacks (key down, key up, text input) in ChromiumApp.cpp. The fix will soon be on the dev branch.

[bgbnbigben]

Hi there,

No, I didn't find a solution -- it didn't particularly bother me since Warren suggested it was a different technology to mobile (and I'm only required to target mobile for this project, though perhaps in the future we might also move to desktop). However, it seems you found a fix; great news! I currently only have an android build on hand so can't test this on linux, but shall clone the dev branch in a few days to confirm.

[bgbnbigben]

I don't believe this is a complete fix; for instance, the backspace button doesn't register with this fix.

[JMLX42]

Correct. Some specific keys still don't work. Yet they work just fine on
Windows. This is still likely a Linux specific issue.
Le 11 mai 2015 09:01, "Ben Stott" notifications@github.com a écrit :

I don't believe this is a complete fix; for instance, the backspace button
doesn't register with this fix.

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