etcl on kindle

[yahalome]

I copied the embedded tcl 'etcl' http://www.evolane.com/software/etcl/ to the kindle and played with the tcl part. tcl works just great. when I try to run the Tk part it seems to work but nothing is shown. I used the "Gui Launcher" but on launch no gui is seen. also in xtrem I do not see a thing but no error.
any hints on how to approach this? I am not an expert so I probably miss something fundamental.

[geekmaster]

For the GUI to work on the kindle, it needs eink support. Even if it has framebuffer support, you need to trigger eink updates. That can be added to the code, or it can run as a background script the way Jesse Vincent did it for Savory (Qt/Calibre ported to run on the kindle).

Depending on WHICH kindle, it needs some input handling too (DX and K3 use different keycodes for their keyboards, K4 needs a 5-way joypad controlled onscreen keyboard, K5 needs a touchscreen onscreen keyboard and touchscreen mouse emulation). None of these are trivial.

[bhaak]

Googling suggests that there are eTcl versions with X11 support.

If yours has then you still have to set the correct window title for anything to be shown. The KT environment uses the X11 window title for deciding how to stack and display the X11 windows. See this thread https://www.mobileread.com/forums/sho...d.php?t=162022.

For a quick test of a X11 program you don't need to do anything else as the touch event on the KT is mapped to a standard X11 left mouse click event.

[geekmaster]

Originally Posted by bhaak

Googling suggests that there are eTcl versions with X11 support.

If yours has then you still have to set the correct window title for anything to be shown. The KT environment uses the X11 window title for deciding how to stack and display the X11 windows. See this thread https://www.mobileread.com/forums/sho...d.php?t=162022.

For a quick test of a X11 program you don't need to do anything else as the touch event on the KT is mapped to a standard X11 left mouse click event.

Good to know. Thanks.

[yahalome]

I played some more and found that the only thing that was missing in the tcl code was the line:

wm overrideredirect $wname on (where wname is the window name)

I was able to run the etcl demos of the calculator and the ataxx game after adding this line. I also created a launcher and then run nicely.

This means that existing Tk application with slight modification can run nicely on the kindle. of course the Etcl demos with the additional line need no further modification.

[geekmaster]

Originally Posted by yahalome

I played some more and found that the only thing that was missing in the tcl code was the line:

wm overrideredirect $wname on (where wname is the window name)

I was able to run the etcl demos of the calculator and the ataxx game after adding this line. I also created a launcher and then run nicely.

This means that existing Tk application with slight modification can run nicely on the kindle. of course the Etcl demos with the additional line need no further modification.

Great news!

Now we need a new Tk prefix, and a new Tk index, for these new Tk apps.

P.S. Welcome to the 2600 club!

[aditya3098]

Where did you add that line?

[yahalome]

Originally Posted by aditya3098

Where did you add that line?

I just added it in the tcl code after the window was created. I also modified few other programs and they work great. I saw there is some issue with multiple windows but I did not investigate it.