Magma + FreeType font

[Hilaire Fernandes]

I am now using Pharo with FreeType fonts + Magmar41.1.

The font I am using use the LogicalFont class (this is how I declare in 
my code the TT font I am using).

I have extended LogicalFont to get it persisted:

First with a new way to instantiate it:

LogicalFont class>>familyName: familyName pointSize: pointSize emphasis: 
code

^ (self familyName:	pointSize pointSize: pointSize) emphasis: code; yourself

Then three methods for persistence, I copied the existing TType class 
persistence methods:

maAsStorageObject
	"I am about to be written on an object file.  Write a
reference to a known FontSet in the other system instead."
	"a path to me"
	^ DiskProxy
		global: #LogicalFont
		selector: #familyName:pointSize:emphasis:
		args: {
				(self familyName).
				(self pointSize).
				(self emphasis)
			 }

maUsesStandardStorage

	^ false

maWantsPreSerialization
	^ true


Basically these methods are used when I am persisting in the Magma 
Database a morph with some text.

Now when I am fetching such Morph from the Magma data base in another 
image (with the same code extension) I got a Segmentation fault (the 
trace is included there).

The crash is clearly happening in FreeType code, in the primitive 
called from FT2Face>setPixelWidth:height:

Probably I got something wrong in my persistence code, I will be more 
than happy with any kind of tips.

Thanks,

Hilaire
-------------- next part --------------
Segmentation fault

2043386704 FT2Face>setPixelWidth:height:
2043386052 FreeTypeFont>getLinearWidthOf:
2043385056 [] in FreeTypeFont>linearWidthOf:
2043384872 FreeTypeCache>atFont:charCode:type:ifAbsentPut:
2043384780 FreeTypeFont>linearWidthOf:
2043384688 FreeTypeFont>widthOf:
2043384596 LogicalFont>widthOf:
2043383952 CharacterScanner>setFont
2043383860 CompositionScanner>setFont
2043383760 CompositionScanner>setStopConditions
2043383656 CompositionScanner>composeFrom:inRectangle:firstLine:leftSide:rightSide:
2043382952 TextComposer>composeEachRectangleIn:
2043382644 TextComposer>composeAllRectangles:
2043382552 TextComposer>composeOneLine
2043382460 TextComposer>composeAllLines
2043382368 TextComposer>composeLinesFrom:to:delta:into:priorLines:atY:textStyle:text:container:wantsColumnBreaks:
2043383184 NewParagraph>composeLinesFrom:to:delta:into:priorLines:atY:
2043382276 NewParagraph>composeAll
2043382184 NewParagraph>compose:style:from:in:
2043382092 TextMorph>paragraph
2043380696 TextMorph>fit
2043373380 TextMorph>extent:
2043373288 Morph>bounds:
2043371348 Morph>layoutInBounds:
2043343140 TableLayout>layoutLeftToRight:in:
2043342184 TableLayout>layout:in:
2043338568 Morph>doLayoutIn:
2043333032 Morph>layoutInBounds:
2043297376 TableLayout>layoutTopToBottom:in:
2043297248 TableLayout>layout:in:
2043297120 Morph>doLayoutIn:
2043296936 [] in Morph>fullBounds
2043296844 BlockContext>on:do:
2043296752 Morph>fullBounds
2043296660 Morph>privateInvalidateMorph:
2043296520 Morph>privateAddMorph:atIndex:
2043296428 Morph>addMorph:inFrontOf:
2043296336 [] in Morph>addMorphInFrontOfLayer:
2043296244 SequenceableCollection>do:
2043296152 Morph>addMorphInFrontOfLayer:
2043296060 PasteUpMorph>addMorphFront:
2043295968 Morph>addMorph:
2043295876 Morph>openInWorld:
2043295784 Morph>openInWorld
2042502832 IFIMatchExoMorph>?
2042166172 UndefinedObject>?
2042162816 Compiler>evaluate:in:to:notifying:ifFail:logged:
2042162484 [] in ParagraphEditor>evaluateSelection
2042162300 BlockContext>on:do:
2042162208 ParagraphEditor>evaluateSelection
2042162116 ParagraphEditor>doIt
2042162392 [] in ParagraphEditor>doIt:
2042162024 Controller>terminateAndInitializeAround:
2042161932 ParagraphEditor>doIt:
2042161684 ParagraphEditor>dispatchOnCharacter:with:
2042161580 TextMorphEditor>dispatchOnCharacter:with:
2042161464 ParagraphEditor>readKeyboard
2042161372 TextMorphEditor>readKeyboard
2042161004 [] in TextMorph>keyStroke:
2042160912 TextMorph>handleInteraction:fromEvent:
2042160820 TextMorphForEditView>handleInteraction:fromEvent:
2042160728 TextMorph>keyStroke:
2042160580 TextMorphForEditView>keyStroke:
2042160488 TextMorph>handleKeystroke:
2042160120 KeyboardEvent>sentTo:
2042160028 Morph>handleEvent:
2042159936 Morph>handleFocusEvent:
2042160212 [] in HandMorph>sendFocusEvent:to:clear:
2042160304 [] in PasteUpMorph>becomeActiveDuring:
2042159844 BlockContext>on:do:
2042159752 PasteUpMorph>becomeActiveDuring:
2042159568 HandMorph>sendFocusEvent:to:clear:
2042159476 HandMorph>sendEvent:focus:clear:
2042159340 HandMorph>sendKeyboardEvent:
2042159248 HandMorph>handleEvent:
2042159028 HandMorph>processEvents
2042159120 [] in WorldState>doOneCycleNowFor:
2042158936 SequenceableCollection>do:
2042158844 WorldState>handsDo:
2042158752 WorldState>doOneCycleNowFor:
2042158660 WorldState>doOneCycleFor:
2042158568 PasteUpMorph>doOneCycle
2030389024 [] in >spawnNewProcess
2030389208 [] in BlockContext>newProcess
Abandon