Re: NSView drawing in tool

[Andreas Höschler]

Hi all,

> I just realized that the tool works as expected on GNUstep when being 
> logged in on the console of the machine supposed to run the service. 
> However, in production this service is supposed to be started by cron 
> with noone being logged in!? Any idea how to get around the
>
> Abort (core dumped)Tools/OSMMapServer: Uncaught exception 
> WindowServerCommunication, reason: Unable to connect to X Server `'
>
> problem then?

I forgot to mention that one needs to generate a window around the view 
to get this to work. My tool code basically looks as follows now:

      NSWindow *window = [[NSWindow alloc] 
initWithContentRect:NSMakeRect(0,0, _imageSize.width, 
_imageSize.height) styleMask:0 backing:NSBackingStoreNonretained 
defer:NO];
      MapView *mapView = [[MapView alloc] initWithFrame:NSMakeRect(0,0, 
_imageSize.width, _imageSize.height)];
      [window setContentView:mapView];
      ...
      // fetch data from the database and do some magic with 
NSBezierPath in drawRect:
      ...
      [mapView display];
      [mapView lockFocus];
      NSBitmapImageRep *rep = [[NSBitmapImageRep alloc] 
initWithFocusedViewRect:[mapView bounds]];
      NSData *data = [[[rep TIFFRepresentation] retain] autorelease];
      [mapView unlockFocus];
      [rep release];
      [mapView release];
      [window release];
      return data;

As reported in my last email this code works great on GNUstep as long 
as I am looged in and have started the tool via Terminal.app. However, 
starting the tool from a ssh session or via cron gives me

Abort (core dumped)Tools/OSMMapServer: Uncaught exception 
WindowServerCommunication, reason: Unable to connect to X Server `'

! :-(

Hints still greatly appreciated!

Thanks,

  Andreas