Moved to trunk. See "Graphical oddities across image save (squeak 5.1)" thread for background.

Dave

On Sun, Oct 08, 2017 at 12:42:36PM +0000, commits at source.squeak.org wrote:
> Bob Arning uploaded a new version of Graphics to project The Inbox:
> http://source.squeak.org/inbox/Graphics-raa.383.mcz
> 
> ==================== Summary ====================
> 
> Name: Graphics-raa.383
> Author: raa
> Time: 8 October 2017, 8:42:24.504722 am
> UUID: 032db0c7-96b0-436f-b882-5ddbeeb9de99
> Ancestors: Graphics-topa.382
> 
> try to ensure BitBlt>>primDisplayString:from:to:map:xTable:kern: uses the primitive since the fallback code can produce different results (StrikeFont + subPixelRendering turned off + maybe other stuff, e.g.)
> 
> =============== Diff against Graphics-topa.382 ===============
> 
> Item was changed:
>   ----- Method: BitBlt>>primDisplayString:from:to:map:xTable:kern: (in category 'private') -----
>   primDisplayString: aString from: startIndex to: stopIndex map: glyphMap xTable: xTable kern: kernDelta
>   	| ascii |
>   	<primitive:'primitiveDisplayString' module:'BitBltPlugin'>
> + 
> + 	((sourceForm isForm) and: [sourceForm unhibernate])
> + 		ifTrue: [^ self primDisplayString: aString from: startIndex to: stopIndex map: glyphMap xTable: xTable kern: kernDelta].
> + 	((destForm isForm) and: [destForm unhibernate])
> + 		ifTrue: [^ self primDisplayString: aString from: startIndex to: stopIndex map: glyphMap xTable: xTable kern: kernDelta].
> + 	((halftoneForm isForm) and: [halftoneForm unhibernate])
> + 		ifTrue: [^ self primDisplayString: aString from: startIndex to: stopIndex map: glyphMap xTable: xTable kern: kernDelta].
> + 
>   	startIndex to: stopIndex do:[:charIndex|
>   		ascii := (aString at: charIndex) asciiValue.
>   		glyphMap ifNotNil:[ascii := glyphMap at: ascii+1].
>   		sourceX := xTable at: ascii + 1.
>   		width := (xTable at: ascii + 2) - sourceX.
>   		self copyBits.
>   		destX := destX + width + kernDelta.
>   	].!
> 
>