[Vm-dev] Re: [Pharo-project] we need help for rome

John M McIntosh johnmci at smalltalkconsulting.com
Sun Apr 18 21:23:42 UTC 2010

Well hey I'm just the guy tapping the compile button, er no support agreement here... 

Likely the original plugin code came via 

	location: 'http://source.impara.de/Rome'
	user: ''
	password: ''

If someone wants to make the required fixes to the plugin code, and the smalltalk code I *think* I can build a new plugin..  Likely this won't affect Sophie users (if any) because that's a one click app. However this means an update to the mac vm's and other platforms in order to ensure the smalltalk class in a Pharo image matches expectations. 

On 2010-04-18, at 10:45 AM, Bert Freudenberg wrote:

> I think only the first 4 inst vars are actually used by the plugin:
> http://squeakvm.org/svn/squeak/trunk/platforms/unix/src/plugins/RomePlugin/RomePlugin.c
> #define CanvasHandleIndex 0
> #define CanvasTargetIndex 1
> #define CanvasFlagsIndex 2
> #define CanvasStrokeColorIndex 3
> #define CanvasInstSize 8
> So on Linux, Rome does use the "right" size. John appears to have used a Sophie image to generate his Plugin, which makes this fail (though I could not find his Rome plugin in the Mac OS platform code so can't verify that theory).
> The proper fix would be to modify RomePlugin class>>initializeInstVarIndices to not generate the indices, but simply hard-code only the used ones (setting CanvasInstSize to 4), and change the comparison John mentioned below to <=. Also remove the unused *Index class vars. Now that there are plugins in the wild, hard-coding the indices is a good idea anyway. During development, the flexible generator version was useful, but not anymore.
> - Bert -

John M. McIntosh <johnmci at smalltalkconsulting.com>   Twitter:  squeaker68882
Corporate Smalltalk Consulting Ltd.  http://www.smalltalkconsulting.com

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