[maemo-developers] Kiosk Mode Intranet Web Client

[From: Simon Moore]

Here is a program and source that will make nokia 770 go full screen 
and a script to start the browser.  i.e. run the start browser script 
then tell it to go fullscreen.

Call it in a shell script with this preceding the program
export DISPLAY=":0.0"
so it knows what display you are talking about

You can add the script to the inittab so it get called on boot (bear 
in mind the nokia really only boots when it is fully powered 
off.  When it is "powered off) and charging it is actually on (you 
can ssh into it and everything, its screen is just off)

There is no real way of coping with a user taking it our of full 
screen or a different APP being in front when you run the full screen 
program (which will make the app on top full screen).

We have noticed several issue with the nokia power on all the time - 
scripting it to reboot every night is a good idea.  Typical issues 
are loss of network (even though still connected), memory leaks, 
browser window unexpectedly closing.

Note none of this has been tested on newer nokias than the 770.  The 
810 uses a different browser and may well have the command line kiosk 
mode (full screen) switch that is so noticeably lacking in opera on the 770.

Simon


At 12:21 18/02/2008, F. Warnecke wrote:

>Hello Community,
>
>I'm new to this list and couldn't find this topic in the archive.
>
>We have Nokia 770s in use as web-clients for an intranet application.
>The tablets are mount stationary on the users desks and connected to
>power permanently. Their only job is to connect to a pre-defined WLAN
>and view a pre-defined website - nothing else.
>
>We realized that the tablets slow down in general after some days as
>they are turned on and connected to the WLAN permanently.
>Any idea about the reason?
>
>I also have this idea about a reduced system that starts in a kind of
>kiosk mode: auto-connect to this one and only WLAN, showing the
>webbrowser in full screen with a pre-defined home-url, with no
>possibility to leave the browser. Any other built-in applications
>(mail, chat, calculator, pdf-reader, media-player, etc) are removed
>from the system.
>I hope for more stability and speed with this.
>With an image of such a reduced system I also only have to flash it to
>all the new clients instead of configuring them by hand.
>Does anyone know such a solution?
>
>Another thing I can't find a solution for is to turn of the sleep-mode
>completely and avoid the screen to turn of the light.
>Any ideas for this?
>
>Thanks a lot.
>_______________________________________________
>maemo-developers mailing list
>maemo-developers at maemo.org
>https://lists.maemo.org/mailman/listinfo/maemo-developers
>
>
>
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>17/02/2008 14:39
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gcc *.c -o FullScreen -I/usr/X11R6/include -L/usr/X11R6/lib -lX11 -lXtst
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// Copyright Fitronics Ltd.
// Define the parts of keysym.h we want to use
#define XK_MISCELLANY

// Include appropriate headers
#include <X11/extensions/XTest.h>
#include <X11/Xlib.h>
#include <X11/keysym.h>
#include <string.h>

// Define boolean values
#define TRUE    1
#define FALSE   0

// Function Prototypes
int main(int argc, char *argv[]);

// Main function
int main(int argc, char *argv[]) {
    // Declare vars used in the function
    char name[2] = ":0";                // Name of display to
    Display *dpy = XOpenDisplay(NULL);  // Handle of the above display
    unsigned int keysym = XK_F6;        // Keysym for Full Screen (F6 = Full Screen on N770)
    unsigned int keycode;               // Keycode of the above
    int ret_val;                        // Value returned from a function call

    // Was a display returned?
    if (dpy == NULL) {
        printf("No display returned. Exiting.\n");
        return 1;
    }

    // Get the keycode for the given keysym
    keycode = XKeysymToKeycode(dpy, keysym);

    // Run the Full screen command
    /*  Args: - Display Handle
              - Key Code
              - Pressed (true) or Releaed (false)
              - Milliseconds to pause before performing */
    ret_val = XTestFakeKeyEvent(dpy, keycode, TRUE, CurrentTime);
    ret_val = XTestFakeKeyEvent(dpy, keycode, FALSE, CurrentTime);

    // Close the display and exit the program
    XCloseDisplay(dpy);
    return 0;
}

// Leave new line at the end
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