Kweb Suite (Minimal Kiosk Browser, omxplayerGUI)

gkreidl · Fri Oct 20, 2017 7:37 am

mickae1 wrote: ↑
Thu Oct 19, 2017 10:19 pm
Hi is it possible to use this browser in kiosk mode? I guess that the answer is yes.

But is it safe? I don't want the user to be able to access my system when its in kiosk mode.
I just want my user to be able to browse my web page that all.

How to hide all button, address bar?

Is it possible to show a virtual keyboard?

Micka,

Xes, and in a safer way than with any other browser. There are special options to run in kiosk mode, prevent opening a second window (even if required by the user, a link or Javascript) and to reduce the number of keyboard shortcuts. A typical kiosk browser command may look like this:
kweb -KAHRJEh url

It's your responsibility to disable global keyboard shortcuts which could be used to leave the browser.

No, there is no virtual keyboard.

nlc · Wed Oct 25, 2017 7:14 pm

Dear gkreidl,

I find a small issue in my application

If the user push the mouse button on an element (text, image, etc...), he can move it

That's really funny because a worked a lot on the interface and I never tested that

Do you know if there is a way to disable drag and drop ?

Regards,
Cyril

gkreidl · Thu Oct 26, 2017 7:55 am

nlc wrote: ↑
Wed Oct 25, 2017 7:14 pm
Dear gkreidl,

I find a small issue in my application
If the user push the mouse button on an element (text, image, etc...), he can move it
That's really funny because a worked a lot on the interface and I never tested that
Do you know if there is a way to disable drag and drop ?

Regards,
Cyril

No, there's no configuration option for the webkitgtk widget to disable drag and drop.

nlc · Thu Oct 26, 2017 8:01 am

Ok thank you, maybe there is a way in javascript, I will take a look

nlc · Thu Oct 26, 2017 8:18 am

Just for information if other users can be interested, adding ondragstart="return false;" in the body tag do the job

Code: Select all

<body onload="pageInit();" ondragstart="return false;">

gkreidl · Thu Oct 26, 2017 9:04 am

nlc wrote: ↑
Thu Oct 26, 2017 8:18 am
Just for information if other users can be interested, adding ondragstart="return false;" in the body tag do the job
Code: Select all
<body onload="pageInit();" ondragstart="return false;">

Thanks for publishing this useful information.

Cybrnitro · Sat Nov 04, 2017 1:08 am

Ok so I have read the multiple modes of this browser and I’m going to give it a try. But not sure which option suites me best.

I have a web based program that I am currently loading with chromium kiosk and it’s under http://localhost:5000 its called CraftBeerPi.com

It’s all fine and dandy but I want something that’s loads stupid fast and to the point so it loads straight to CraftBeerPi page. All I need is it and command line. I don’t want it to blink in and out a bunch. Don’t need the stupid desktop. Just need it to load and work with a touch screen with no latency

Thanks a bunch

I’m currently running full raspian stretch.

Cybrnitro · Sat Nov 04, 2017 12:17 pm

Ok so I have read the multiple modes of this browser and I’m going to give it a try. But not sure which option suites me best.

I have a web based program that I am currently loading with chromium kiosk and it’s under http://localhost:5000 its called CraftBeerPi.com

It’s all fine and dandy but I want something that’s loads stupid fast and to the point so it loads straight to CraftBeerPi page. All I need is it and command line. I don’t want it to blink in and out a bunch. Don’t need the stupid desktop. Just need it to load and work with a touch screen with no latency

Thanks a bunch

I’m currently running full raspian stretch.

Tichun · Sun Nov 05, 2017 3:23 pm

Are there any plans to switch over to WebKit Pure Embedded (WPE) from WebKitGTK+?
I haven't tried it yet, as there seem only to be sd card images' blueprints specifically for it, but Kweb seems like a good fit for it (along with suckless surf) as it bases around the pi and runs on raspbian.
If you haven't heard about it, this port is made especially for IoT devices low on memory with comparably capable GPUs, for it accelerates webgl and even the video playback (the latter I think is not present even on desktop linux, in any browser).
I still don't expect it to be faster than chromium for the javascript part, but it's promising.

gkreidl · Mon Nov 06, 2017 8:59 am

Tichun wrote: ↑
Sun Nov 05, 2017 3:23 pm
Are there any plans to switch over to WebKit Pure Embedded (WPE) from WebKitGTK+?
...

No, I will stick with GTK+.

gkreidl · Mon Nov 06, 2017 9:17 am

Cybrnitro wrote: ↑
Sat Nov 04, 2017 12:17 pm
Ok so I have read the multiple modes of this browser and I’m going to give it a try. But not sure which option suites me best.

I have a web based program that I am currently loading with chromium kiosk and it’s under http://localhost:5000 its called CraftBeerPi.com

It’s all fine and dandy but I want something that’s loads stupid fast and to the point so it loads straight to CraftBeerPi page. All I need is it and command line. I don’t want it to blink in and out a bunch. Don’t need the stupid desktop. Just need it to load and work with a touch screen with no latency

Thanks a bunch

I’m currently running full raspian stretch.

All standard browsers require at least X-ORG and usually also a window manager.

rdavid89 · Sat Nov 18, 2017 6:56 pm

Hi,

how can i use kweb in kios mode whit xinit in special resolution: 1440 x 900?

David

rdavid89 · Sat Nov 18, 2017 7:00 pm

Hi!

How can I use Kweb with xinit kiosk mode with special resolution: 1440 x 900 ?

David

gkreidl · Sun Nov 19, 2017 8:41 am

rdavid89 wrote: ↑
Sat Nov 18, 2017 7:00 pm
Hi!

How can I use Kweb with xinit kiosk mode with special resolution: 1440 x 900 ?

David

kweb will adapt to any screen size but this requires a window manager (openbox, for example).

nlc · Sun Nov 19, 2017 6:15 pm

Dear gkreidl,
In my application, I use kweb-1.7.9, and after some days, the raspberry becomes slower and slower.
I checked with 'top' command, the CPU was fine, but the memory was full and the raspberry was working on swap.
It seems the problem comes from kweb, he used 87.3% of the memory.
Maybe the 1.7.9 version is not the last version, but do you know if a memory leak was detected in this version and corrected in a next release ?

Best regards
Cyril

gkreidl · Sun Nov 19, 2017 10:23 pm

nlc wrote: ↑
Sun Nov 19, 2017 6:15 pm
Dear gkreidl,
In my application, I use kweb-1.7.9, and after some days, the raspberry becomes slower and slower.
I checked with 'top' command, the CPU was fine, but the memory was full and the raspberry was working on swap.
It seems the problem comes from kweb, he used 87.3% of the memory.
Maybe the 1.7.9 version is not the last version, but do you know if a memory leak was detected in this version and corrected in a next release ?

Best regards
Cyril

I don't believe in any memory leak - and if there's one I cannot fix it because it's in the webkit engine.
All browsing engines use lots of memory, depending on the web content and on the sites visited (caches building up).
In kweb you can use different memory models, using less or no cache at all ( D and U options).

kortak · Mon Nov 20, 2017 8:49 am

Hello,

It seems that the installation is broken as some files are missing on one server:

Err http://mirrordirector.raspbian.org/raspbian stretch/main armhf at-spi2-core armhf 2.22.0-6
404 Not Found [IP : 93.93.128.193 80]
Fetched 0 B in 0s (0 B/s)
Erreur lors de l'installation : « Failed to fetch http://mirrordirector.raspbian.org/rasp ... _armhf.deb 404 Not Found [IP : 93.93.128.193 80]

Best regards.

nlc · Mon Nov 20, 2017 11:29 am

gkreidl wrote: ↑
Sun Nov 19, 2017 10:23 pm
I don't believe in any memory leak - and if there's one I cannot fix it because it's in the webkit engine.
All browsing engines use lots of memory, depending on the web content and on the sites visited (caches building up).
In kweb you can use different memory models, using less or no cache at all ( D and U options).

In my application, the browser loads a page at startup and stay indefinitely on this page. I have a javascript script which do an ajax call every second to a server to know which dynamic content to display.
Thus IMO it can't be a cache problem, I only see a memory leak problem, I will investigate more !

Regards

gkreidl · Mon Nov 20, 2017 2:10 pm

kortak wrote: ↑
Mon Nov 20, 2017 8:49 am
Hello,

It seems that the installation is broken as some files are missing on one server:

Err http://mirrordirector.raspbian.org/raspbian stretch/main armhf at-spi2-core armhf 2.22.0-6
404 Not Found [IP : 93.93.128.193 80]
Fetched 0 B in 0s (0 B/s)
Erreur lors de l'installation : « Failed to fetch http://mirrordirector.raspbian.org/rasp ... _armhf.deb 404 Not Found [IP : 93.93.128.193 80]

Best regards.

Did you run apt-get update before installing?
at-spi2-core is available on Raspbian Stretch: http://archive.raspbian.net/raspbian/po ... _armhf.deb

gkreidl · Mon Nov 20, 2017 2:11 pm

nlc wrote: ↑
Mon Nov 20, 2017 11:29 am

gkreidl wrote: ↑
Sun Nov 19, 2017 10:23 pm
I don't believe in any memory leak - and if there's one I cannot fix it because it's in the webkit engine.
All browsing engines use lots of memory, depending on the web content and on the sites visited (caches building up).
In kweb you can use different memory models, using less or no cache at all ( D and U options).
In my application, the browser loads a page at startup and stay indefinitely on this page. I have a javascript script which do an ajax call every second to a server to know which dynamic content to display.
Thus IMO it can't be a cache problem, I only see a memory leak problem, I will investigate more !

Regards

I suppose your AJAX calls are responsible for cache growth.

kortak · Tue Nov 21, 2017 1:32 pm

gkreidl wrote: ↑
Mon Nov 20, 2017 2:10 pm

kortak wrote: ↑
Mon Nov 20, 2017 8:49 am
Hello,

It seems that the installation is broken as some files are missing on one server:

Err http://mirrordirector.raspbian.org/raspbian stretch/main armhf at-spi2-core armhf 2.22.0-6
404 Not Found [IP : 93.93.128.193 80]
Fetched 0 B in 0s (0 B/s)
Erreur lors de l'installation : « Failed to fetch http://mirrordirector.raspbian.org/rasp ... _armhf.deb 404 Not Found [IP : 93.93.128.193 80]

Best regards.
Did you run apt-get update before installing?
at-spi2-core is available on Raspbian Stretch: http://archive.raspbian.net/raspbian/po ... _armhf.deb

You were right, I did not update before installing. So now it is installing properly.

Thank you,
Best regards.

djimmy · Tue Dec 19, 2017 10:51 am

Hello,

I have an issue with html5 video tag with kweb 1.7.9.8 for Stretch. The video doesn't display and doesn't launch.

: IMG_0088.jpg (106.48 KiB) Viewed 5027 times

=> It's a Raspbian stretch clean install. I launch Kweb on kiosk mode :
matchbox-window-manager &
kweb -ZJEWYAHKRPB+-r http://localhost/test.html
(I don't want use Omxplayer because my video must be integrate on a webpage).

I think all dependencies is correctly installed and I use correct html page, because if I use chromium-browser instead kweb on the same config and the same webpage, the video play correctly.

I haven't errors message.

My video tag is :
<video controls autoplay src="/photos/tv/5_big_buck_bunny_720p_5mb.mp4"></video>

=> Before, I used kweb3 on Jessie, with the same command line (I used Kweb3 instead KWeb) and same webpage :
kweb3 -ZJEWYAHKRPB+-r http://localhost/test.html
All worked fine ! The video start and display correctly.

Thank you very much.
Best regards

gkreidl · Tue Dec 19, 2017 12:08 pm

djimmy wrote: ↑
Tue Dec 19, 2017 10:51 am
Hello,

I have an issue with html5 video tag with kweb 1.7.9.8 for Stretch. The video doesn't display and doesn't launch.
IMG_0088.jpg

=> It's a Raspbian stretch clean install. I launch Kweb on kiosk mode :
matchbox-window-manager &
kweb -ZJEWYAHKRPB+-r http://localhost/test.html
(I don't want use Omxplayer because my video must be integrate on a webpage).

I think all dependencies is correctly installed and I use correct html page, because if I use chromium-browser instead kweb on the same config and the same webpage, the video play correctly.

I haven't errors message.

My video tag is :
<video controls autoplay src="/photos/tv/5_big_buck_bunny_720p_5mb.mp4"></video>

=> Before, I used kweb3 on Jessie, with the same command line (I used Kweb3 instead KWeb) and same webpage :
kweb3 -ZJEWYAHKRPB+-r http://localhost/test.html
All worked fine ! The video start and display correctly.

Thank you very much.
Best regards

I cannot test this myself right now (all my working systems are still using Jessie). But you should check, which gstreamer1.0 plugins are installed and add the missing ones (especially the bad plugins).

kweb on Stretch doesn't have HW video acceleration any more as kweb3 had on Jessie. 720p might not work well in the browser. You might try the omxplayerGUI overlay method (simulated web video) as described in the omxplayerGUI manual.

djimmy · Tue Dec 19, 2017 2:26 pm

Thank you very much for your quick answer .

It's work with :
sudo apt-get install gstreamer1.0-plugins-bad gstreamer1.0-plugins-ugly gstreamer1.0-packagekit gstreamer1.0-omx

Have a good day.
Thank you.

Fyren · Wed Dec 20, 2017 2:59 pm

gkriedl, I remember that in the Makefiles for some older versions of kweb, there was a commented out target that used webkit2. Do you happen to have that source around, even if it didn't work?

I'm interested in running kweb on a system other than Raspbian where a much newer verion of webkitgtk seems to be working fine. Any head start towards getting kweb working with the newer webkit API would be appreciated (and I'd happy provide back any changes I make).

Kweb Suite (Minimal Kiosk Browser, omxplayerGUI)

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