Re: [sdljava-users] Can AWT/Swing widgets be used inside or alongside sdlsurface?

[Ivan Z. G. <iva...@ya...>]

Hi Sannie,

All very interesting!

To answer your first question currently there is NO support within 
sdljava to interoperate with AWT/Swing.  This is certainly something 
that would be nice to have though!  I'll have to go over all the 
information posted below but it certainly sounds like its possible.  It 
doesn't seem like its a small amount of work though...The pbuffer idea 
might be possible with very little work though.  We can get pbuffer 
support in sdljava very easily as GLEW already supports it I belive.  I 
will check it out.

I am working on a very simple GUI framework (part of sdljava) which I 
intend to be useable for game development.  This is currently coming 
along slowly however.

The question of how to provide a usefull and fast (for gaming) GUI is a 
hard one and I don't currently know the answer.  As always any 
suggestions from others are welcome.

-Ivan/

Sannie Kwakman wrote:

> Sannie Kwakman wrote:
>
>> Chris Dennett wrote:
>>
>>> Chris Dennett wrote:
>>>
>>>> Chris Dennett wrote:
>>>>
>>>>> Sannie Kwakman wrote:
>>>>>
>>>>>> Hi everyone!
>>>>>>
>>>>>> I'm checking out various high-speed graphics and game libraries 
>>>>>> for use in a java based multiplayer game I'm developing. Sdljava 
>>>>>> seems to do the trick on most requirements, but there is 
>>>>>> something that I haven't figured out yet. At certain points in 
>>>>>> the game, there will be several animations and sprite-movements 
>>>>>> displayed at once, with some basic chat functionality right next 
>>>>>> to it. My knowledge of sdljava (or SDL for that matter) is still 
>>>>>> pretty limited, but my understanding is that I have to create a 
>>>>>> SDLSurface for the animations and sprite movements (using openGL 
>>>>>> or sdl_gfx). I wanted to use the standard AWT (or, if possible, 
>>>>>> Swing) widgets for the chatinterface, which is nothing more than 
>>>>>> a TextField and scrollable TextArea. In my tests I haven't been 
>>>>>> able to combine a SDL_surface and AWT/Swing widgets in one 
>>>>>> window. My approaches so far have been pretty awt-centric (trying 
>>>>>> to add a SDLSurface to a Container/Frame/JFrame and trying to get 
>>>>>> a AWT/Swing widget to draw on a SDLSurface) none of which were 
>>>>>> succesfull. And because a SDLSurface creates its own window, 
>>>>>> drawing/adding AWT widgets next to the SDLSurface don't seem to 
>>>>>> be possible either.
>>>>>>
>>>>>> Is combining AWT/Swing with SDL graphics actually possible (and 
>>>>>> if so, how) or are there other methods for creating a chat 
>>>>>> interface within a surface?
>>>>>>
>>>>>> Thanks in advance!
>>>>>>
>>>>>> -- Sannie Kwakman
>>>>>
>>>>>
>>>>>
>>>>>
>>>>>
>>>>>
>>>>> This seems to be quite a good idea, but you can't do it using the 
>>>>> approach you are taking.
>>>>>
>>>>>
>>>> Have a look at this: 
>>>> http://java.sun.com/j2se/1.3/docs/api/java/awt/Graphics.html. If 
>>>> you want AWT stuff in an SDLJava SDL window, you will need to 
>>>> extend this class and implement all the abstract methods. You then 
>>>> have to shove this into somewhere to register it as the default 
>>>> graphics thingy, but it dosen't tell you how to do this anywhere.
>>>>
>>> Have a look at Odonata -- they are attempting to have AWT working on 
>>> SDL, which is what you want to do. I expect they have taken the 
>>> approach which I outlined in the previous message. See 
>>> http://adorphuye.com/gallery/Odonata/Odonata20040816 for a 
>>> screenshot. If you can get the source to this, then it might be 
>>> adaptable to
>>> SDLJava. I think the project is also GPLed, so you can modify and 
>>> redistribute the source if you want.
>>>
>>> I'm just trying to find the Odonata CVS so I can check out the 
>>> latest files (I'm interested in this myself), but it may not have 
>>> anonymous access. There was also something about AWT / Swing being 
>>> OpenGL accelerated in the latest version of Java, so perhaps that 
>>> could also be used?
>>>
>>> Regards,
>>> Chris
>>>
>> 'lo Chris,
>>
>> thanks for the reponses. I managed to download the Odonata src 
>> (http://odonata.tangency.co.uk/files/). While scanning through them, 
>> I got one mystery solved on how to replace Java's standard 
>> GraphicsEnvironments. Odonata seems to do this pretty simple:
>>
>> System.setProperty("java.awt.graphicsenv","uk.co.tangency.odonata.GraphicsEnvironment"); 
>>
>>
>> Odonata is still pretty early in development, and by the looks of it, 
>> far from finished. In search for other methods, I found some threads 
>> on the LWJGL forum that are discussing the awt/swing problem, and the 
>> latest posts about it indicate that they were very close in having a 
>> awt/swing adapter class. There was some code for it posted on the 
>> forums, but I haven't found it in their CVS yet.Here are some related 
>> forum threads:
>> http://lwjgl.org/forum/viewtopic.php?t=904&highlight=awt
>> http://lwjgl.org/forum/viewtopic.php?t=900&highlight=awt
>>
>> As I understand it, their approach is to use a pbuffer in which the 
>> gl is rendered and draw the resulting pixels in a custom JComponent. 
>> Looks like a more elegant solution to me, altough I don't know how 
>> bad it will affect performance.
>>
>> -- Sannie
>>
> .. but it looks like pbuffer support (SDL calls it rendertarget) won't 
> be implemented until the 1.3 release :( Or does anyone know an 
> alternative?
>
> -- Sannie
>
>
>
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