Re: NSView drawing in tool

[Andreas Höschler]

Hi all,

> I have a tool (service) that is supposed to generate PNG images using 
> NSView drawRect and
>
>       NSBitmapImageRep *rep = [[NSBitmapImageRep alloc] 
> initWithFocusedViewRect:[mapView bounds]];
>
> When running this tool and calling the above method (NSView, NSImage 
> stuff,...) I get
>
> GSFontInfo.m:71  Assertion failed in GSFontEnumerator(class), method 
> sharedEnumerator.  Called with fontEnumeratorClass unset. The shared 
> NSApplication instance must be created before methods that need the 
> backend may be called.
>
> OK, I modified my main.m to call
>
>       [NSApplication sharedApplication];
>
> before starting the event loop with [[NSRunLoop currentRunLoop] run], 
> but this gives me
>
> 	/opt/GNUstep/Local/Tools/OSMMapServer: Uncaught exception 
> WindowServerCommunication, reason: Unable to connect to X Server `'
>
> What am i missing?

I tried to run my  OSMMapServer. There I get

2009-06-22 23:58:50.268 OSMMapServer[3122] *** Assertion failure in 
-[MapView lockFocus], AppKit.subproj/NSView.m:2343
lockFocus sent to a view whose window is deferred and does not yet have 
a corresponding platform window

It seems I am on the wrong track with my approach!? Is there any 
example of a GNUstep tool that generates PNGs or TIFFs from a NSView 
after drawing NSBezierPaths?
How is this done correctly? Hints are greatly appreciated!

Thanks a lot!

  - Andreas