Hi all,

Really, really surprised I've never noticed this before, but I've seen it now on Squeak 5.2 and Squeak 5.3 trunk.  32-bit and 64-bit. 

You can resize a Morphic system window, using the top resize border bar, far past the bottom border of the window.  MVC behaves somewhat differently, but probably in a way that will shed light on the problem.

It is at its worst (most visible) when preference #fastWindowDragForMorphic is disabled.  When that preference is enabled, one is disallowed from dragging past the bottom border of the window.  But still, the notion that a window has a minimum size seems to be gone...?

How to reproduce: 
Open up a Workspace window.  Drag the top resize bar downward past the bottom border of the window.  Watch what happens.  Try it again with a different setting for preference #fastWindowDragForMorphic.  Try again in an MVC project or a Morphic project.

Doesn't happen on e.g. version 4.4.


Cheers,
Tim J



Image
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/Users/tcj/Downloads/Squeak5.3alpha-18661-64bit/Squeak5.3alpha-18661-64bit.image
Squeak5.3alpha
latest update: #18661
Current Change Set: Unnamed1
Image format 68021 (64 bit)

Virtual Machine
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/Applications/Squeak/Squeak 64-bit 20190711.app/Contents/MacOS/Squeak
Croquet Closure Cog[Spur] VM [CoInterpreterPrimitives VMMaker.oscog-eem.2530] 5.0.201907112020
Mac OS X built on Jul 16 2019 21:59:46 PDT Compiler: 4.2.1 Compatible Apple LLVM 9.1.0 (clang-902.0.39.2)
platform sources revision VM: 201907112020 tcj at oxyd:src/opensmalltalk-vm Date: Thu Jul 11 13:20:10 2019 CommitHash: 1ea727fe2 Plugins: 201907112020 tcj at oxyd:src/opensmalltalk-vm
CoInterpreter VMMaker.oscog-eem.2530 uuid: 4d90ede0-0700-4d15-8173-2aaf2360b7d1 Jul 16 2019
StackToRegisterMappingCogit VMMaker.oscog-eem.2521 uuid: 4f1618e4-2a0c-4ba8-be03-b8670286ba00 Jul 16 2019