February 2017 - Pharo-dev - lists.pharo.org

Re: [Pharo-dev] [Moose-dev] How ready is Bloc for a simple use-case?

by Aliaksei Syrel

We could try to do it together and maybe even make a video (stream) of implementation process :) Cheers, Alex On 22 February 2017 at 22:02, Aliaksei Syrel <alex.syrel(a)gmail.com> wrote: > Hi Peter > > I wanted to ask about Bloc: > > Thanks for your interest :) > > 1) how stable is the API? e.g. if some overhaul changes to unify/whatever >> are planned > > > Api itself is in "final" state, however naming might be improved (changed > with or without depreciations). But don't worry user-side api is already in > a very good shape, at least from our perspective :) > > 2) I saw in the techtalk that you can align elements (to center, bottom, >> ...), however is that possible with lines? Lines have to rotate, morph >> shape, etc. > > 3) Are non-straight lines possible? (e.g. bezier, arc) > > > Exactly :) Lines are just bloc elements as anything else: buttons, text > images. They can be linear, can be arcs or bezier curves (both quadratic or > cubic). Default canvas used for rendering in Bloc (SpartaCanvas) has very > good support of vector shapes and lines. > > The idea for me is to make a simple mindmap >> - elements with some text, icons, math symbols inside >> - connectors (non-straight lines) between elements > > > It is very doable. Please, don't forget that Bloc is a low level framework > that does not contain any widgets (existing ones will be deleted, > especially BlLine, BlText and BlTextElement). The only responsibility Bloc > has is to provide a basic infrastructure that does not put any constraints > on users. Which means that if you want to have a bezier line you have to > subclass BlElement, implement corresponding accessors for anchor points and > override drawPathOnSpartaCanvas: in order to display you line. You can > learn more about canvas by checking SpartaCanvas class comment and method > comments in 'api' protocol. > > Layouts, alignment, transformations are part of bloc and are available to > all subclasses of BlElement. > > Cheers, > Alex > > On 22 February 2017 at 21:32, Peter Uhnak <i.uhnak(a)gmail.com> wrote: > >> Hi, >> >> I wanted to ask about Bloc: >> >> 1) how stable is the API? e.g. if some overhaul changes to >> unify/whatever are planned >> 2) I saw in the techtalk that you can align elements (to center, bottom, >> ...), however is that possible with lines? Lines have to rotate, morph >> shape, etc. >> 3) Are non-straight lines possible? (e.g. bezier, arc) >> >> The idea for me is to make a simple mindmap >> - elements with some text, icons, math symbols inside >> - connectors (non-straight lines) between elements >> >> To me (apart from the lines) it seems like it should be already doable. >> >> Also either my (Morphic) Pharo is really slow, or Bloc (in the video) is >> superfast (everything is happening instantly). >> >> Thanks, >> Peter >> _______________________________________________ >> Moose-dev mailing list >> Moose-dev(a)list.inf.unibe.ch >> https://www.list.inf.unibe.ch/listinfo/moose-dev >> > >

Feb. 22, 2017

Re: [Pharo-dev] [Moose-dev] How ready is Bloc for a simple use-case?

by Aliaksei Syrel

Hi Peter I wanted to ask about Bloc: Thanks for your interest :) 1) how stable is the API? e.g. if some overhaul changes to unify/whatever > are planned Api itself is in "final" state, however naming might be improved (changed with or without depreciations). But don't worry user-side api is already in a very good shape, at least from our perspective :) 2) I saw in the techtalk that you can align elements (to center, bottom, > ...), however is that possible with lines? Lines have to rotate, morph > shape, etc. 3) Are non-straight lines possible? (e.g. bezier, arc) Exactly :) Lines are just bloc elements as anything else: buttons, text images. They can be linear, can be arcs or bezier curves (both quadratic or cubic). Default canvas used for rendering in Bloc (SpartaCanvas) has very good support of vector shapes and lines. The idea for me is to make a simple mindmap > - elements with some text, icons, math symbols inside > - connectors (non-straight lines) between elements It is very doable. Please, don't forget that Bloc is a low level framework that does not contain any widgets (existing ones will be deleted, especially BlLine, BlText and BlTextElement). The only responsibility Bloc has is to provide a basic infrastructure that does not put any constraints on users. Which means that if you want to have a bezier line you have to subclass BlElement, implement corresponding accessors for anchor points and override drawPathOnSpartaCanvas: in order to display you line. You can learn more about canvas by checking SpartaCanvas class comment and method comments in 'api' protocol. Layouts, alignment, transformations are part of bloc and are available to all subclasses of BlElement. Cheers, Alex On 22 February 2017 at 21:32, Peter Uhnak <i.uhnak(a)gmail.com> wrote: > Hi, > > I wanted to ask about Bloc: > > 1) how stable is the API? e.g. if some overhaul changes to unify/whatever > are planned > 2) I saw in the techtalk that you can align elements (to center, bottom, > ...), however is that possible with lines? Lines have to rotate, morph > shape, etc. > 3) Are non-straight lines possible? (e.g. bezier, arc) > > The idea for me is to make a simple mindmap > - elements with some text, icons, math symbols inside > - connectors (non-straight lines) between elements > > To me (apart from the lines) it seems like it should be already doable. > > Also either my (Morphic) Pharo is really slow, or Bloc (in the video) is > superfast (everything is happening instantly). > > Thanks, > Peter > _______________________________________________ > Moose-dev mailing list > Moose-dev(a)list.inf.unibe.ch > https://www.list.inf.unibe.ch/listinfo/moose-dev >

Feb. 22, 2017

How ready is Bloc for a simple use-case?

by Peter Uhnak

Hi, I wanted to ask about Bloc: 1) how stable is the API? e.g. if some overhaul changes to unify/whatever are planned 2) I saw in the techtalk that you can align elements (to center, bottom, ...), however is that possible with lines? Lines have to rotate, morph shape, etc. 3) Are non-straight lines possible? (e.g. bezier, arc) The idea for me is to make a simple mindmap - elements with some text, icons, math symbols inside - connectors (non-straight lines) between elements To me (apart from the lines) it seems like it should be already doable. Also either my (Morphic) Pharo is really slow, or Bloc (in the video) is superfast (everything is happening instantly). Thanks, Peter

Feb. 22, 2017

Re: [Pharo-dev] [VM] Windows VM SurfacePlugin.dll LoadLibrary failure

by Peter Uhnak

On Thu, Feb 16, 2017 at 12:19:00PM +0100, Cyril Ferlicot D. wrote: > > I got the same problem with the latest vm some weeks ago on Windows 7. > It vanished by downloading a new vm some days after. I've downloaded the latest VM and it works as expected. Thanks! Peter

Feb. 22, 2017

Epicea - showing latest lost changes

by Ben Coman

One thing I am missing from Epicea that I used to be able to do is being able to filter out old changes. If I've been thrashing some method back and forth between a few implementations, often I don't want to see *all* the old changes,only the latest ones. An option to restore old versions would also be nice, but I don't think that feature existed previously. cheers -ben

Feb. 22, 2017

[pharo-project/pharo-core]

by GitHub

Branch: refs/tags/60408 Home: https://github.com/pharo-project/pharo-core

Feb. 22, 2017

[pharo-project/pharo-core] 1cdbba: 60408

by GitHub

Branch: refs/heads/6.0 Home: https://github.com/pharo-project/pharo-core Commit: 1cdbbada9ba7c8879e9bd2b67d83d2b6fa8e2021 https://github.com/pharo-project/pharo-core/commit/1cdbbada9ba7c8879e9bd2b6… Author: Jenkins Build Server <board(a)pharo-project.org> Date: 2017-02-22 (Wed, 22 Feb 2017) Changed paths: M BaselineOfIDE.package/BaselineOfIDE.class/instance/baseline/baseline_.st M BaselineOfIDE.package/BaselineOfIDE.class/instance/baseline/groups_.st A PharoBootstrap-Initialization.package/ManifestPharoBootstrapInitialization.class/README.md A PharoBootstrap-Initialization.package/ManifestPharoBootstrapInitialization.class/class/as yet unclassified/ignoredDependencies.st A PharoBootstrap-Initialization.package/ManifestPharoBootstrapInitialization.class/class/meta-data - dependency analyser/manuallyResolvedDependencies.st A PharoBootstrap-Initialization.package/ManifestPharoBootstrapInitialization.class/class/meta-data - dependency analyser/packageName.st A PharoBootstrap-Initialization.package/ManifestPharoBootstrapInitialization.class/definition.st A PharoBootstrap-Initialization.package/PharoBootstrapInitialization.class/README.md A PharoBootstrap-Initialization.package/PharoBootstrapInitialization.class/class/class-initialization/classesToInitializeWithDependencies.st A PharoBootstrap-Initialization.package/PharoBootstrapInitialization.class/class/class-initialization/classesToInitializeWithNoDependency.st A PharoBootstrap-Initialization.package/PharoBootstrapInitialization.class/class/class-initialization/initializeClasses.st A PharoBootstrap-Initialization.package/PharoBootstrapInitialization.class/class/class-initialization/runInitializeOnClasses_.st A PharoBootstrap-Initialization.package/PharoBootstrapInitialization.class/class/loading/loadPackage_from_.st A PharoBootstrap-Initialization.package/PharoBootstrapInitialization.class/class/loading/loadSUnitPackage.st A PharoBootstrap-Initialization.package/PharoBootstrapInitialization.class/class/loading/loadTestPackages.st A PharoBootstrap-Initialization.package/PharoBootstrapInitialization.class/class/loading/reloadBootstrapPackages.st A PharoBootstrap-Initialization.package/PharoBootstrapInitialization.class/class/loading/repository.st A PharoBootstrap-Initialization.package/PharoBootstrapInitialization.class/class/public api/initializeCommandLineHandlerAndErrorHandling.st A PharoBootstrap-Initialization.package/PharoBootstrapInitialization.class/class/public api/run.st A PharoBootstrap-Initialization.package/PharoBootstrapInitialization.class/class/public api/runStartup.st A PharoBootstrap-Initialization.package/PharoBootstrapInitialization.class/class/running - tests/ignoredTests.st A PharoBootstrap-Initialization.package/PharoBootstrapInitialization.class/class/running - tests/runTests.st A PharoBootstrap-Initialization.package/PharoBootstrapInitialization.class/class/running - tests/runTestsOn_.st A PharoBootstrap-Initialization.package/PharoBootstrapInitialization.class/class/running - tests/testClassesFrom_.st A PharoBootstrap-Initialization.package/PharoBootstrapInitialization.class/class/running - tests/testPackages.st A PharoBootstrap-Initialization.package/PharoBootstrapInitialization.class/class/temporary-patch/applyPatches.st A PharoBootstrap-Initialization.package/PharoBootstrapInitialization.class/class/temporary-patch/fixPharoClassInstallerMethodCopying.st A PharoBootstrap-Initialization.package/PharoBootstrapInitialization.class/class/temporary-patch/fixSetInitialCodeFormatter.st A PharoBootstrap-Initialization.package/PharoBootstrapInitialization.class/class/temporary-patch/fixUpdateInstancesOfSpecialClasses.st A PharoBootstrap-Initialization.package/PharoBootstrapInitialization.class/definition.st A PharoBootstrap-Initialization.package/UnicodeDefinitions.class/README.md A PharoBootstrap-Initialization.package/UnicodeDefinitions.class/class/accessing/caseFolding.st A PharoBootstrap-Initialization.package/UnicodeDefinitions.class/class/accessing/data.st A PharoBootstrap-Initialization.package/UnicodeDefinitions.class/class/initializing/initializeUnicodeClass.st A PharoBootstrap-Initialization.package/UnicodeDefinitions.class/definition.st R ScriptLoader60.package/ScriptLoader.class/instance/pharo - scripts/script60407.st A ScriptLoader60.package/ScriptLoader.class/instance/pharo - scripts/script60408.st R ScriptLoader60.package/ScriptLoader.class/instance/pharo - updates/update60407.st A ScriptLoader60.package/ScriptLoader.class/instance/pharo - updates/update60408.st M ScriptLoader60.package/ScriptLoader.class/instance/public/commentForCurrentUpdate.st Log Message: ----------- 60408 19743 Fix Refactoring-Tests-Group in BaselineOfIDE https://pharo.fogbugz.com/f/cases/19743 19744 integrate PharoBootstrap-Initialization https://pharo.fogbugz.com/f/cases/19744 http://files.pharo.org/image/60/60408.zip

Feb. 22, 2017

Re: [Pharo-dev] WeakValueDictionary: shouldn't be "absent" after GC?

by Guillermo Polito

I trust your native english advice :) On Wed, Feb 22, 2017 at 2:11 PM, Ben Coman <btc(a)openinworld.com> wrote: > On Wed, Feb 22, 2017 at 8:52 PM, Guillermo Polito > <guillermopolito(a)gmail.com> wrote: > > > > > > On Wed, Feb 22, 2017 at 12:57 AM, Martin Dias <tinchodias(a)gmail.com> > wrote: > >> > >> Hi all > >> > >> Phil: > >> I'm sorry, didn't get what you point with the code snippet. The copy of > >> the Symbol is the same instance, that I think it's nto GCed. > >> > >> Guille: > >> Yes, I knew the internals of the WeakValueDictionary but asked about the > >> API. > > > > > > Ah, ok, I only understood that you did not get why it was like that. :) > > > >> > >> What I don't know is about using WeakRegistry > > > > > > This is just needed to do the cleanup of the expired associations. > > > >> > >> and Ephemerons. > > > > > > This is a completely different thing. There is an EphemeronRegistry in > the > > image, but it does not propose at:/at:ifAbsent: messages. It just holds > > Ephemerons. > > > >> I'll check WeakKeyDictionary. > > > > > > If you need to hold weakly the values, then this is not what you're > looking > > for, isn't it? > > > >> > >> > >> I understand the idea of "explicit control of magic", but not sure if I > >> understand concretely. Do you mean to implement something like > >> WeakValueDictionary>>register which will not be executed by > #initialize, so > >> the user can decide to register. Am I right? > > > > > > Yep. I would even call it: > > > > registerForCleanup > > > > Like that it is explicit that you're doing it, and that it may incur into > > some performance degradation of the entire system. > > > >> > >> > >> Denis: > >> +1 WeakSet behavior is really confusing! In thte case of > >> WeakValueDictionary I didn't check for inconsistencies but was only > annoyed > >> but it's behavior. > >> > >> Guille and Denis: > >> Instead of using SetElement or cleaning up the empty > >> WeakValueAssociations, what I first thought is to internally consider an > >> association with nil as absent. I mean, modify or override some methods > soem > >> when there is an WeakValueAssociation with value == nil it considers > it's > >> absent. Concretely, I'd expect: > > > > > > Well, the idea of the SetElement is that you may want to have `nil` as a > > valid value in your dictionary. Otherwise, you cannot do: > > > > WeakValueDictionary new > > at: 'key' put: nil; > > at: 'key' --> error??? > > > > We can discuss if it is useful or not, but as with sets, before people > used > > to check if the inserted element was nil beforehand to have the expected > > behavior... > > > >> > >> | dictionary | > >> dictionary := WeakValueDictionary with: 'hello' -> 'world' copy. > >> Smalltalk garbageCollect. > >> { > >> dictionary values includes: nil. ---> false > >> dictionary at: 'hello'. ---> NotFound signal > >> dictionary at: 'hello' ifAbsent: [ 'absent' ]. ---> 'absent' > >> dictionary at: 'hello' ifAbsentPut: [ 'put' ]. ---> 'put' > >> } > > > > > > I agree that we may review the API. At least #at:, #at:ifAbsent: and > > #at:ifAbsentPut: should behave similarly. > > > > In any case, we could see how to improve EphemeronRegistry or even > implement > > an EphemericDictionary that would replace the WeakValueDictionary. > > btw, Would EmphemeralDictionary be an acceptable name? It has a nicer > sound to it. > cheers -ben > > > > > > >> > >> > >> It's better if I give some context. Look this simplified version of my > use > >> case: > >> > >> MyUI>> > >> morphAt: key > >> cache ifNil: [ cache := WeakValueDictionary new ]. > >> ^ cache at: key ifPresent: [:cachedValueOrNil | cachedValueOrNil > >> ifNotNil: [ cachedValueOrNil ] ifNil: [ cache at: entryReference put: > (self > >> newMorph: key) ] ] ifAbsent: [ cache at: entryReference put: (self > newMorph: > >> key) ] > >> > >> I'd like to only send #newMorph: in ifAbsent: and to avoid the > >> ifNotNil:ifNil: > >> Like this: > >> > >> morphAt: key > >> cache ifNil: [ cache := WeakValueDictionary new ]. > >> ^ cache at: key ifAbsent: [ cache at: entryReference put: (self > newMorph: > >> key) ] > >> > >> :-) > >> > >> MartÃn > > > > > >

Feb. 22, 2017

Re: [Pharo-dev] WeakValueDictionary: shouldn't be "absent" after GC?

by Ben Coman

On Wed, Feb 22, 2017 at 8:52 PM, Guillermo Polito <guillermopolito(a)gmail.com> wrote: > > > On Wed, Feb 22, 2017 at 12:57 AM, Martin Dias <tinchodias(a)gmail.com> wrote: >> >> Hi all >> >> Phil: >> I'm sorry, didn't get what you point with the code snippet. The copy of >> the Symbol is the same instance, that I think it's nto GCed. >> >> Guille: >> Yes, I knew the internals of the WeakValueDictionary but asked about the >> API. > > > Ah, ok, I only understood that you did not get why it was like that. :) > >> >> What I don't know is about using WeakRegistry > > > This is just needed to do the cleanup of the expired associations. > >> >> and Ephemerons. > > > This is a completely different thing. There is an EphemeronRegistry in the > image, but it does not propose at:/at:ifAbsent: messages. It just holds > Ephemerons. > >> I'll check WeakKeyDictionary. > > > If you need to hold weakly the values, then this is not what you're looking > for, isn't it? > >> >> >> I understand the idea of "explicit control of magic", but not sure if I >> understand concretely. Do you mean to implement something like >> WeakValueDictionary>>register which will not be executed by #initialize, so >> the user can decide to register. Am I right? > > > Yep. I would even call it: > > registerForCleanup > > Like that it is explicit that you're doing it, and that it may incur into > some performance degradation of the entire system. > >> >> >> Denis: >> +1 WeakSet behavior is really confusing! In thte case of >> WeakValueDictionary I didn't check for inconsistencies but was only annoyed >> but it's behavior. >> >> Guille and Denis: >> Instead of using SetElement or cleaning up the empty >> WeakValueAssociations, what I first thought is to internally consider an >> association with nil as absent. I mean, modify or override some methods soem >> when there is an WeakValueAssociation with value == nil it considers it's >> absent. Concretely, I'd expect: > > > Well, the idea of the SetElement is that you may want to have `nil` as a > valid value in your dictionary. Otherwise, you cannot do: > > WeakValueDictionary new > at: 'key' put: nil; > at: 'key' --> error??? > > We can discuss if it is useful or not, but as with sets, before people used > to check if the inserted element was nil beforehand to have the expected > behavior... > >> >> | dictionary | >> dictionary := WeakValueDictionary with: 'hello' -> 'world' copy. >> Smalltalk garbageCollect. >> { >> dictionary values includes: nil. ---> false >> dictionary at: 'hello'. ---> NotFound signal >> dictionary at: 'hello' ifAbsent: [ 'absent' ]. ---> 'absent' >> dictionary at: 'hello' ifAbsentPut: [ 'put' ]. ---> 'put' >> } > > > I agree that we may review the API. At least #at:, #at:ifAbsent: and > #at:ifAbsentPut: should behave similarly. > > In any case, we could see how to improve EphemeronRegistry or even implement > an EphemericDictionary that would replace the WeakValueDictionary. btw, Would EmphemeralDictionary be an acceptable name? It has a nicer sound to it. cheers -ben > >> >> >> It's better if I give some context. Look this simplified version of my use >> case: >> >> MyUI>> >> morphAt: key >> cache ifNil: [ cache := WeakValueDictionary new ]. >> ^ cache at: key ifPresent: [:cachedValueOrNil | cachedValueOrNil >> ifNotNil: [ cachedValueOrNil ] ifNil: [ cache at: entryReference put: (self >> newMorph: key) ] ] ifAbsent: [ cache at: entryReference put: (self newMorph: >> key) ] >> >> I'd like to only send #newMorph: in ifAbsent: and to avoid the >> ifNotNil:ifNil: >> Like this: >> >> morphAt: key >> cache ifNil: [ cache := WeakValueDictionary new ]. >> ^ cache at: key ifAbsent: [ cache at: entryReference put: (self newMorph: >> key) ] >> >> :-) >> >> MartÃn > >

Feb. 22, 2017

Re: [Pharo-dev] WeakValueDictionary: shouldn't be "absent" after GC?

by Guillermo Polito

On Wed, Feb 22, 2017 at 12:57 AM, Martin Dias <tinchodias(a)gmail.com> wrote: > Hi all > > Phil: > I'm sorry, didn't get what you point with the code snippet. The copy of > the Symbol is the same instance, that I think it's nto GCed. > > Guille: > Yes, I knew the internals of the WeakValueDictionary but asked about the > API. > Ah, ok, I only understood that you did not get why it was like that. :) > What I don't know is about using WeakRegistry > This is just needed to do the cleanup of the expired associations. > and Ephemerons. > This is a completely different thing. There is an EphemeronRegistry in the image, but it does not propose at:/at:ifAbsent: messages. It just holds Ephemerons. I'll check WeakKeyDictionary. > If you need to hold weakly the values, then this is not what you're looking for, isn't it? > > I understand the idea of "explicit control of magic", but not sure if I > understand concretely. Do you mean to implement something like > WeakValueDictionary>>register which will not be executed by #initialize, > so the user can decide to register. Am I right? > Yep. I would even call it: registerForCleanup Like that it is explicit that you're doing it, and that it may incur into some performance degradation of the entire system. > > Denis: > +1 WeakSet behavior is really confusing! In thte case of > WeakValueDictionary I didn't check for inconsistencies but was only annoyed > but it's behavior. > > Guille and Denis: > Instead of using SetElement or cleaning up the empty > WeakValueAssociations, what I first thought is to internally consider an > association with nil as absent. I mean, modify or override some methods > soem when there is an WeakValueAssociation with value == nil it considers > it's absent. Concretely, I'd expect: > Well, the idea of the SetElement is that you may want to have `nil` as a valid value in your dictionary. Otherwise, you cannot do: WeakValueDictionary new at: 'key' put: nil; at: 'key' --> error??? We can discuss if it is useful or not, but as with sets, before people used to check if the inserted element was nil beforehand to have the expected behavior... > | dictionary | > dictionary := WeakValueDictionary with: 'hello' -> 'world' copy. > Smalltalk garbageCollect. > { > dictionary values includes: nil. *---> false * > dictionary at: 'hello'. * ---> NotFound signal* > dictionary at: 'hello' ifAbsent: [ 'absent' ].* ---> 'absent'* > dictionary at: 'hello' ifAbsentPut: [ 'put' ]. *---> 'put'* > } > I agree that we may review the API. At least #at:, #at:ifAbsent: and #at:ifAbsentPut: should behave similarly. In any case, we could see how to improve EphemeronRegistry or even implement an EphemericDictionary that would replace the WeakValueDictionary. > > It's better if I give some context. Look this simplified version of my use > case: > > MyUI>> > morphAt: key > cache ifNil: [ cache := WeakValueDictionary new ]. > ^ cache at: key ifPresent: [:cachedValueOrNil | cachedValueOrNil > ifNotNil: [ cachedValueOrNil ] ifNil: [ cache at: entryReference put: (self > newMorph: key) ] ] ifAbsent: [ cache at: entryReference put: (self > newMorph: key) ] > > I'd like to only send #newMorph: in ifAbsent: and to avoid the > ifNotNil:ifNil: > Like this: > > morphAt: key > cache ifNil: [ cache := WeakValueDictionary new ]. > ^ cache at: key ifAbsent: [ cache at: entryReference put: (self > newMorph: key) ] > > :-) > > MartÃn >

Feb. 22, 2017