February 2015 - Pharo-users

Re: [Pharo-users] pharo and ui again

by Nicolai Hess

2015-02-11 23:28 GMT+01:00 Sebastian Heidbrink <sheidev(a)yahoo.de>: > > Hi again! > > Well, we had an other Software Smalltalk Night and we want to try to make > a Smalltalk Kinect Fun project. > It was pretty easy to conenct the Kinect camera with a Squeak For Scratch > image. > That enabled everybody to easily get going. > > Since a few days I try to prepare further steps and I must say,... I am > completely lost in the UI frameworks. > > Let's have a simple example. > > A window with a title, 2 labels, 2 entry fields, one checkbox and 2 > buttons. > e.g. a login form for a Pharo application. > We will need the parts, the layout, the events, the starting point as well > as a result handler.... > After 5 days I can tell ,that I am lost in Morphic, UIManager, > Traits/No-Traits, Spec, GLMMorphic, Poly.... > a quick example (based on the code from class WidgetExamples) http://ws.stfx.eu/PXC188LWWWBN it is just an example and of course you need to wire up all the widget controls (textfield/checkbox) with your model. With spec this is easy too. But this kind of dialogs (request dialog, alert dialog, choose from a list dialog) are so common, that we really should build a small widget library, otherwise every developer builds his own spec models. > And sometimes things are even mixed up and I am not able to decide which > approach to follow,... > Some examples store widgets in instance variables, others initialize the > morph based on the underlying model. > MVC is sometimes mixed up... > And this was just the topic parts and partially layout and events.... > How does one open this login as an overlay, or as temporary replacement > for the main content.... > > I tried Spec, but somehow it is much more difficult to get a proper > functioning layout that behaves mature during resize and such events than > expected. > Is it possible to take a more Squeakish approach and just instantiate ui > components compose them, define handler/callback symbols in those instances > and then generate a specification/code out of this? > > Can anybody please point me at a full documentation on how to do things > properly? > I wish there was something like this. We have some spec docs at http://spec.st/ there are many resources for morphic at http://wiki.squeak.org/squeak/morphic But much howtos or tutorials widely scattered and aren't up to date. The best thing you can do is look at the examples (and tools) in the image ask in this mailng list write about your progress and experience! ( Help others who may have the same questions). > There are many examples for the widgets but there is not a single example > on how to built a real framework based on MVC in Pharo. > > Well and unfortunately a lot of stuff is outÃdated already. I somehow have > the feeling that one and the same thing was implemented over and over again. > yes that is true. > > I honestly try to bring Pharo/Smalltalk to the crowd, but somhow I feel > like the UI development removes all the productivity that one usually has > with Smalltalk. > > I'd like to provide the interested locals here with a bsic implementation > that they will be able to extend or go on with. > But I do not want to invest time into not supported things. > Support = Someone has to invest the time. nicolai > > Thank you for any hint again! > Sebastian > > >

Feb. 11, 2015

pharo and ui again

by Sebastian Heidbrink

Hi again! Well, we had an other Software Smalltalk Night and we want to try to make a Smalltalk Kinect Fun project. It was pretty easy to conenct the Kinect camera with a Squeak For Scratch image. That enabled everybody to easily get going. Since a few days I try to prepare further steps and I must say,... I am completely lost in the UI frameworks. Let's have a simple example. A window with a title, 2 labels, 2 entry fields, one checkbox and 2 buttons. e.g. a login form for a Pharo application. We will need the parts, the layout, the events, the starting point as well as a result handler.... After 5 days I can tell ,that I am lost in Morphic, UIManager, Traits/No-Traits, Spec, GLMMorphic, Poly.... And sometimes things are even mixed up and I am not able to decide which approach to follow,... Some examples store widgets in instance variables, others initialize the morph based on the underlying model. MVC is sometimes mixed up... And this was just the topic parts and partially layout and events.... How does one open this login as an overlay, or as temporary replacement for the main content.... Â I tried Spec, but somehow it is much more difficult to get a proper functioning layout that behaves mature during resize and such events than expected. Is it possible to take a more Squeakish approach and just instantiate ui components compose them, define handler/callback symbols in those instances and then generate a specification/code out of this? Can anybody please point me at a full documentation on how to do things properly? There are many examples for the widgets but there is not a single example on how to built a real framework based on MVC in Pharo. Well and unfortunately a lot of stuff is outÃdated already. I somehow have the feeling that one and the same thing was implemented over and over again. I honestly try to bring Pharo/Smalltalk to the crowd, but somhow I feel like the UI development removes all the productivity that one usually has with Smalltalk. I'd like to provide the interested locals here with a bsic implementation that they will be able to extend or go on with. But I do not want to invest time into not supported things. Thank you for any hint again! Sebastian

Feb. 11, 2015

Re: [Pharo-users] Getting notified when a morph moves

by Hilaire

Le 11/02/2015 21:19, Stephan Eggermont a Ã©crit : > I'm trying to keep a line morph connected between two morphs > while moving one of them. > When I add the morph to the hand and start dragging the morph > no longer receives mouseMove:. I can think of several ways to get > position updates. Is there a best/easy way? > > Stephan > > I tried something like bellow but it did not produced any output in the transcript. Only "b doAnnounce: MorphChanged" produce an output in the Transcript. Not sure how to get an anonymous morph to announce changes. | b | b := BorderedMorph new color: Color red. b onAnnouncement: MorphChanged do: [ Transcript show: 'Changed' ]. b openInWorld -- Dr. Geo - http://drgeo.eu iStoa - http://istoa.drgeo.eu

Feb. 11, 2015

Re: [Pharo-users] GSOC 2015 application

by Sven Van Caekenberghe

> On 11 Feb 2015, at 20:33, Sebastian Sastre <sebastian(a)flowingconcept.com> wrote: > > >> On Feb 11, 2015, at 5:08 PM, Esteban A. Maringolo <emaringolo(a)gmail.com> wrote: >> >> Syntax extensions (pluggable?): >> I know we have many alternatives, which I used and are more than >> acceptable , but I'd like to write JSON as close as possible to its >> original syntax. > > +1 except I would not say that "I want to write JSON as close as possibleâ. > > Itâs either zero friction or itâs already good enough. > > In Amber, for example, you already can write a JSON object âas close as possibleâ to the original syntax and is o-kay but is not really great because youâre still being taxed when compared to JavaScript and that taxing might never payoff, thatâs why I say that we are either currently okay or we move towards zero-JSON-friction. > > Amber: > #{ âkey1â-> value1. âkey2 -> value2 } <â kind of okay, survivable And we have { #key1->value1. #key2->value2 } asDictionary which is acceptable to me (you can auto complete asDi-). You want interpolation anyway, this construct gives you that. > JavaScript: > {key1: value1, key2: value2} <â awesome, no friction to party with the rest of the world, it rocks! Seriously, JSON is JavaScript's native format, of course it's easy to use, duh. Every language can use its own literal format with 'no friction'. And the fact that the rest of the world is compatible with JSON is not their doing, but ours ! Sven BTW: technically, JSON is not completely identical to JavaScript and not using a proper parser is a security risk.

Feb. 11, 2015

Re: [Pharo-users] Getting notified when a morph moves

by Aliaksei Syrel

Hi, I think you need to subscribe to the hand morph. It provides some possibilities. Of course if you drag morphs only inside it's parent, you can implement dragging by yourself without adding to hand. In this case mouseMove can be received. Cheers, Alex On Wed, Feb 11, 2015 at 9:19 PM, Stephan Eggermont <stephan(a)stack.nl> wrote: > I'm trying to keep a line morph connected between two morphs > while moving one of them. > When I add the morph to the hand and start dragging the morph > no longer receives mouseMove:. I can think of several ways to get > position updates. Is there a best/easy way? > > Stephan > >

Feb. 11, 2015

Getting notified when a morph moves

by Stephan Eggermont

I'm trying to keep a line morph connected between two morphs while moving one of them. When I add the morph to the hand and start dragging the morph no longer receives mouseMove:. I can think of several ways to get position updates. Is there a best/easy way? Stephan

Feb. 11, 2015

Re: [Pharo-users] GSOC 2015 application

by Ben Coman

Context would be nice to see how it might work with Pharo. On Thu, Feb 12, 2015 at 3:51 AM, Martin BÃ¤hr < mbaehr(a)email.archlab.tuwien.ac.at> wrote: > Excerpts from Sebastian Sastre's message of 2015-02-11 19:37:07 +0100: > > > Remote Environments for Pharo > > Implications: being able to inspect, browse and debug reliably a server > Pharo image from a client Pharo image would spark countless possibilities. > Some of them: server maintenance; hot debug on GUI-less servers in > production; live develop or debug remotely mobile devices that doesnât have > a server. Hot changes in Pharo powered drones and robots. > > this describes exactly what i believe can be done with craig's context. i > am > interested to support this as a co-mentor maybe together with craig or > someone > else more experienced than me. > > greetings, martin. > > -- > eKita - the online platform for your entire academic > life > -- > chief engineer > eKita.co > pike programmer pike.lysator.liu.se caudium.net > societyserver.org > secretary > beijinglug.org > mentor > fossasia.org > foresight developer foresightlinux.org > realss.com > unix sysadmin > Martin BÃ¤hr working in china > http://societyserver.org/mbaehr/ > >

Feb. 11, 2015

Re: [Pharo-users] GSOC 2015 application

by Stephan Eggermont

Ben wrote: >Now google say... "Umbrella organizations get more slots. > If an organization is acting as an umbrella for other projects, chances are >we'll allocate more students to you simply because there's a great deal of >different types of work to be done, and we're hoping our students will end >up with something that appeals to them among this wide offering." [1] >The Pharo Consortium might conceivably be considered an umbrella organization, >if a reasonable amount of selected projects relate to applications built on top of Pharo >and not "just" improvements in the Pharo release. e.g. SciSmalltalk, PhaROS, Phratch. > I guess that is a balance to be determined later. New organizations get a low number of slots. Marginalizing other smalltalks is not in our best interest. I think it would be sad not to run as Esug this year. Running as Esug shows we can overcome last years trouble, and start healing the pain. I totally understand Stef doesn't want to be involved, considering the amount of accusations and abuse it has brought, not just last year. Stephan

Feb. 11, 2015

Re: [Pharo-users] GSOC 2015 application

by Martin BÃ¤hr

Excerpts from Sebastian Sastre's message of 2015-02-11 19:37:07 +0100: > Remote Environments for Pharo > Implications: being able to inspect, browse and debug reliably a server Pharo image from a client Pharo image would spark countless possibilities. Some of them: server maintenance; hot debug on GUI-less servers in production; live develop or debug remotely mobile devices that doesnât have a server. Hot changes in Pharo powered drones and robots. this describes exactly what i believe can be done with craig's context. i am interested to support this as a co-mentor maybe together with craig or someone else more experienced than me. greetings, martin. -- eKita - the online platform for your entire academic life -- chief engineer eKita.co pike programmer pike.lysator.liu.se caudium.net societyserver.org secretary beijinglug.org mentor fossasia.org foresight developer foresightlinux.org realss.com unix sysadmin Martin BÃ¤hr working in china http://societyserver.org/mbaehr/

Feb. 11, 2015

Re: [Pharo-users] Problems evaluating message sends in run-time arrays

by Andy Burnett

á§ Sean P. DeNigris wrote <<< Andy Burnett wrote > In both cases it evaluates to 'Color blue' rather than the Color object. 'Color blue' is the Color object you created and put in your array. It is aColor object. It's print string is 'Color blue'. See Color>>#printOn: for more info. >>> Ah, of course! I completely misunderstood what the inspector was telling me. Thanks very much

Feb. 11, 2015