Edgar J. De Cleene
edgardec2005 at gmail.com
Wed Nov 10 19:01:12 UTC 2010
On 11/10/10 3:46 PM, "Juan Vuletich" <juan at jvuletich.org> wrote:
> Hi Folks,
> A few days ago I released SimpleMorphic for Pharo. SimpleMorphic is the
> Morphic implementation in Cuis. It is much smaller and simpler than the
> one in Pharo (and in Squeak). Please see
> . A link to the code (for Pharo 1.2) is included.
> While this release of the code is for Pharo, it shouldn't be a big deal
> to make it run on Squeak. My hope is that the Pharo community studies it
> in detail, adopts it, and eventually remove the old Morphic. For Squeak,
> maybe the same happens. Or perhaps there would be 2 Morphic UIs for
> Squeak: FullMorphic+Etoys and SimpleMorphic... So, what do you think?
> I also sent this comment to the Pharo mail list recently, trying to make
> clear why SimpleMorphic is useful:
> "Size of 4 core classes (Morph, MorphExtension, PasteUpMorph and
> Pharo / Squeak / Cuis
> totalIvars: 39 / 46 / 26
> totalClassVars: 15 / 10 / 5
> totalInstMethods: 1170 / 1764 / 663
> totalClassMethods: 55 / 71 / 16
> Size of the whole Morph hierarchy
> Pharo / Squeak / Cuis
> totalClasses: 197 / 331 / 58
> totalIvars: 649 / 1063 / 257
> totalClassVars: 54 / 138 / 28
> totalInstMethods: 6651 / 9186 / 2115
> totalClassMethods: 303 / 858 / 127
> SimpleMorphic is much smaller. Core classes are simpler and easier to
> understand, fix and extend. The most important part is that this is not
> blind removal of unused code. A lot of the functionality has been
> redesigned to make it simpler, and the removal was done with great care
> to result in a consistent system. This work started in 2004, so we're
> talking of about 6 years of careful work. All this means that
> SimpleMorphic does not support all the features that Pharo or Squeak
> might support. Please use the browsers and other tools in Cuis to check
> what it indeed can do.
> Talking about complexity, let's take for example, morph layout. This is
> started with #doLayoutIn: in Pharo and #doLayoutIfNeeded in SimpleMorphic.
> In Pharo, this method calls #adjustLayoutBounds: (19), #layout:in:
> (149), #layoutProportionallyIn: (10),
> #computeCellArrangement:in:horizontal:target: (87),
> #computeGlobalCellArrangement:in:horizontal:wrap:spacing: (31),
> #computeCellSizes:in:horizontal: (30),
> #computeExtraSpacing:in:horizontal:target: (136), #layoutLeftToRight:in:
> (91), #layoutTopToBottom:in: (91), #placeCells:in:horizontal:target:
> (70). The numbers in parenthesis are the sum of the lines of code of the
> implementors. Total lines of code for layout (taking only these most
> important methods) is 714. I doubt there are many people who really
> understand all of this code.
> In SimpleMorphic (Cuis), this calls #layoutSubmorphsIn: (10),
> #applyLayoutFrameIn: (11), #layout:in: (24). Total lines of code is 45.
> I believe any smalltalker could understand these in just minutes."
> Juan Vuletich
Excellent as always.
When back at home from Smalltalks2010 see if could take it for
By the way, notices about works with Andreas and Pavel for smaller and
modular image ?
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