[Cuis-dev] White VM window

[Hilaire Fernandes]

Le 17/08/2022 à 19:21, Juan Vuletich a écrit :
> btw, I have no clue what -tracestores is about. Any docs?

The VM -help gives little information:

  -tracestores          enable store tracing (assert check stores)


> What happens if you postpone the setup / startup of DrGeo to until the 
> GUI is ready? For example, instead of

I emptied the DrGeo start up sequence, so the image can start and an 
interesting error pop up. VectorCanvas tries to initialize itself and it 
fails while searching for Deja Vu font. It results VectorGraphics is not 
properly installed. For example Windows can't be rotated.

VectorCanvas class>>initialize
     | family folder |
     (Smalltalk at: #VectorEngineWithPlugin) isPluginAvailable ifFalse: [
         Feature require: 'VectorEngineInSmalltalk' ].
     UISupervisor whenUIinSafeState: [
         (FontFamily familyNamed: FontFamily defaultFamilyName) 
isTrueTypeFontFamily ifFalse: [
             folder _ DirectoryEntry smalltalkImageDirectory / 
'TrueTypeFonts' / 'DejaVu' / 'DejaVuSans'.
             family _ FontFamily familyNamed: (TrueTypeFontFamily read: 
folder) anyOne.
             PreferenceSet setDefaultFont: family familyName.
             FontFamily enableTrueTypeFontsOnly ].
         (VectorEngineWithPlugin isPluginAvailable
             ifTrue: [ MorphicCanvas activeSubclass: VectorCanvas ]
             ifFalse: [
                 'VectorEnginePlugin (VM plugin) is not available. 
HybridCanvas will be activated.' print.
                 MorphicCanvas activeSubclass: HybridCanvas ]) ].


Of course this font folder arrangement is not found in the DrGeo bundle, 
I have a different one. I could create the same but may be we want 
something more flexible.

Two errors


Now thinking again of the DrGeo start up sequence, it is mostly font 
installation:

     | fontFile |
     fontFile _ self fontPath // DrGeoSystem fontFile.
     TrueTypeFontFamily readTrueTypeFontEntry: fontFile.
     PreferenceSet setDefaultFont: DrGeoSystem fontName.
     Preferences at: #guiElementsSize put: #standardFonts

I will test it in UI deferred block.

Thanks

Hilaire

-- 
GNU Dr. Geo
http://drgeo.eu
http://blog.drgeo.eu
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