SDL2 and fork

On 20 Apr 2015, at 22:47, Nicolai Hess <[hidden email]> wrote:

2015-04-20 16:56 GMT+02:00 Alexandre Bergel <[hidden email]>:

I see the point, but SDL seems to be pretty stable isn’t it? 

Only two versions are reported on their website (1.2 and 2.0). Maybe it would be better to directly talk to SDL. Just wondering...

Alexandre

If you use SDL directly -> you will have to create your own event loop (and other stuff)

If you use the OSWindow layer -> you will get a nice API that is already integrated with the main window / main window eventloop.

On 20 Apr 2015, at 23:30, Nicolai Hess <[hidden email]> wrote:

2015-04-20 14:20 GMT+02:00 Esteban Lorenzano <[hidden email]>:

Hi, 

I just committed my prototype/experiment for windows with OSWindow, SDL2 and Athens. 

to check them: 

Gofer it 

smalltalkhubUser: 'Pharo' project: 'OSWindow';

package: 'OSWindow-Core';

package: 'OSWindow-SDL2';

package: 'OSWindow-SDL2-Canvases';

load.

and check the examples at: 

OSSDLAthensWindow

OSSDLMorphWindow

Great!

Although the VM crashes sometimes (after closing the SDL-Window)

And I know found out why the window is partly out of the screen (on Windows7, don't think this happens on linux/mac):

If you open a SDL window with 

SDL createWindow: title x: 0 y: 0 ....

The window opens at 0@0 but this is the upper left corner of the window rectangle *without* window decoration. 

If you open the window with

SDL createWindow: title x: SDL_WINDOWPOS_UNDEFINED ....

-> the full window is visible

nicolai

 

cheers, 

Esteban

On 20 Apr 2015, at 13:55, Nicolai Hess <[hidden email]> wrote:

2015-04-20 13:13 GMT+02:00  <[hidden email]>:

Hello,

 

We don’t lose all keystroke events, but they are replaced by keydown events.

Yes, KeyDown/KeyUp are working and instead of a keystroke event another keydown is sent.

This is strange, I don't know exactly how the SDL event processing can influence the main window events.

Maybe this has something to do how we look for new events in the SDL2DisplayPlugin.

For me the call to SDL_PumpEvents looks unnecessary, maybe this is the cause?

nicolai

 

 

Merwan

 

 

De : Nicolai Hess
Envoyé : ‎lundi‎ ‎20‎ ‎avril‎ ‎2015 ‎09‎:‎36
À : Any question about pharo is welcome; Esteban Lorenzano

 

2015-04-20 8:38 GMT+02:00 Matthieu Lacaton <[hidden email]>:

Hello, 

Thanks for your answers ! I have multiple remarks here : 

1) I know that SDL2 should not be used "as is" in Pharo and I should use OSWindow instead, that's why I won't use SDL2 directly anymore.

On windows there is currently an issue if you use OSWindow instead of directly use SDL.

If you create a window with OSWindow, (like in the SDL2Example>>osWindow) you will loose all "keystroke" events in the main pharo window.

I don't know yet why this happens.

nicolai