Re: ANN: Lua OS 0.6

[Elias Barrionovo <elias.tandel@...>]

I was thinking the same thing. I'd understand the GUI dependency for
demonstration purposes in LuaOS' beginnings, but sooner or later
(rather sooner than later, I guess) it should change to something more
Lua and more open than Java.

There are Lua bindings for Qt and gtk, that perhaps would be more
interesting. I wouldn't know, though, how would these depend on such
things like X11 (i'm a total noob on those matters).

And yes,  LuaPhone is a dream (it even has a catchy name, XD!).

On 8/24/11, Jose <jmalv04@gmail.com> wrote:
> Hi,
>
> When I imagine LuaOS I assume there is no mention of Java whatsoever.
> I understand the Java dependency is only for the GUI examples but it
> would be cool if LuaOS was like the early Linux where you used for any
> hardware lying around.
>
> I imagine/dream using all this Android hardware with only the Linux
> kernel/drivers plus something like LuaOS but with also some GUI
> capabilities (but not Java, please!)
>
>
> On Wed, Aug 24, 2011 at 9:02 PM, Stefan Reich
> <stefan.reich.maker.of.eye@googlemail.com> wrote:
>> Hey folks.
>>
>> A new release! This is really beginning to be fun. You can now write
>> actual Swing-based GUI apps in (Safe) Lua.
>>
>> Here goes:
>> http://luaos.net/luaos-0.6.php (for Windows + Ubuntu as per usual)
>>
>> As an appetizer, check out this little script:
>>
>> -- Show the Lua OS example scripts in a list
>> -- and allow user to run any of them
>> -- Uses a Java Swing GUI!
>>
>> gui = safecomm.invoke{'gui', 'getMasterObject' }
>> frame = gui:showFrame('Lua OS example scripts. This is a Lua app!!')
>>
>> -- Notice how we seamlessly create Java objects and call Java methods:
>>
>> list = gui:newList()
>> vector = gui:newVector()
>> scripts = gui:getExampleScripts()
>> size = scripts:size()
>> for i = 0, size-1 do
>>  vector:add(scripts:getName(i))
>> end
>> list:setListData(vector)
>>
>> btnRun = gui:newButton('Run example')
>>
>> -- We can even do callbacks (call Lua objects from Java):
>>
>> actionListener = object()
>> function actionListener:run()
>>  local idx = list:getSelectedIndex()
>>  if idx >= 0 then
>>    scripts:runScript(idx)
>>  end
>> end
>> btnRun:addActionListener(gui:actionListener(actionListener))
>>
>> buttons = gui:newPanel()
>> buttons:setLayout(gui:stalactiteLayout())
>> buttons:add(btnRun)
>>
>> -- This is a very nice and useful little layout manager I once made
>>
>> layout = gui:letterLayout('LLB')
>> layout:setBorder(10)
>> frame:setLayout(layout)
>> frame:add('L', gui:newScrollPane(list))
>> frame:add('B', buttons)
>>
>> -- Stay alive while user does things
>> safecomm.daemon()
>>
>> ...and that's all already. :)
>>
>> I did some timing measurements and we get about 1 ms per roundtrip -
>> that includes socket transfer to Java, going to the Swing thread,
>> transferring stuff back to Lua and tunnelling sandbox barriers. Pretty
>> decent I'd say and certainly quick enough for now.
>>
>> A note on security: The sandboxes are probably not tight at this point
>> as the comm infrastructure has not been audited. But the goal now is
>> to get stuff to actually work - super-security will come at a later
>> time.
>>
>> Enjoy!
>> Stefan
>>
>>
>
>

-- 
Sent from my mobile device

NI!