Beginners February 2017

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9 participants
7 discussions

Re: [Newbies] Beginners Digest, Vol 123, Issue 3
by Tim Cuthbertson 23 Feb '17

23 Feb '17

Please allow me to simplify my question. I need a basic answer. One of the articles on Morphic says you can create composite morphs either programatically, using addMorph, or using drag and drop from the Objects menu of the morphic World. I have done the latter, because it is easier to design my layout that way. Once that has been done, how do I address the submorph from a browser? If I inspect my button submorph, for example, all it will tell me about it is "a ScriptableButton<Button>(1364754)". I have no idea how to access that object in order to do anything with it. This is the crux of my questions. Thank you Tim Cuthbertson On Wed, Feb 22, 2017 at 10:03 AM, < beginners-request(a)lists.squeakfoundation.org> wrote: > Send Beginners mailing list submissions to > beginners(a)lists.squeakfoundation.org > > To subscribe or unsubscribe via the World Wide Web, visit > http://lists.squeakfoundation.org/mailman/listinfo/beginners > or, via email, send a message with subject or body 'help' to > beginners-request(a)lists.squeakfoundation.org > > You can reach the person managing the list at > beginners-owner(a)lists.squeakfoundation.org > > When replying, please edit your Subject line so it is more specific > than "Re: Contents of Beginners digest..." > > > Today's Topics: > > 1. Re: Using squeak with a script? (H. Hirzel) > 2. Re: Beginner Morphic Question (Tim Cuthbertson) > 3. Re: Beginner Morphic Question (H. Hirzel) > > > ---------------------------------------------------------------------- > > Message: 1 > Date: Wed, 22 Feb 2017 15:49:35 +0100 > From: "H. Hirzel" <hannes.hirzel(a)gmail.com> > To: "A friendly place to get answers to even the most basic questions > about Squeak." <beginners(a)lists.squeakfoundation.org> > Subject: Re: [Newbies] Using squeak with a script? > Message-ID: > <CAGQxfVh_a3V8qotwfQn=BMF4Rbq098hG=BZjHjs=cph3SqG32Q > @mail.gmail.com> > Content-Type: text/plain; charset=UTF-8 > > Maybe > > ExternalCommandShell > > http://wiki.squeak.org/squeak/6023 > > this is of some help? > > --Hannes > > On 2/22/17, Göran Krampe <goran(a)krampe.se> wrote: > > On 21/02/17 20:51, Jacques Harmand wrote: > >> Hi list, > >> I try to use squeak to execute the following basic Smalltalk script (in > >> a file "hello.st <http://hello.st>") > >> "Transcript show: 'Hello world'; cr." > >> from the command line with Squeak. This works as expected with both GNU > >> Smalltalk and Pharo, but with Squeak nothing happens: Squeak seems to > >> wait forever. If I add > >> "Smalltalk snapshot: false andQuit: true." > >> after the above line, the execution of the script terminates, but > >> without printing anything. > > > > I haven't looked closely at latest Squeak (perhaps Pharo has coupled > > Transcript to stdout for headless mode?), but Transcript is not the same > > thing as stdout - so you wouldn't see anything on stdout. > > > > regards, Göran > > _______________________________________________ > > Beginners mailing list > > Beginners(a)lists.squeakfoundation.org > > http://lists.squeakfoundation.org/mailman/listinfo/beginners > > > > > ------------------------------ > > Message: 2 > Date: Wed, 22 Feb 2017 09:18:16 -0600 > From: Tim Cuthbertson <ratcheer(a)gmail.com> > To: beginners(a)lists.squeakfoundation.org > Subject: Re: [Newbies] Beginner Morphic Question > Message-ID: > <CAAKzf7nSsRE=TSto62ae6FN--zN0bDOerSAooK61ioPMz7__nA@ > mail.gmail.com> > Content-Type: text/plain; charset="utf-8" > > Date: Tue, 21 Feb 2017 22:41:36 +0100 > From: "H. Hirzel" <hannes.hirzel(a)gmail.com> > To: "A friendly place to get answers to even the most basic questions > about Squeak." <beginners(a)lists.squeakfoundation.org> > Subject: Re: [Newbies] Beginner Morphic Question > Message-ID: > <CAGQxfVjPLxhKo09-c9r-1XyUMT1qjCHXF4AWRFDuvkaaUsQHaw > @mail.gmail.com> > Content-Type: text/plain; charset=UTF-8 > > Have you seen this example > > http://wiki.squeak.org/squeak/526 > > ? > > Code > > http://wiki.squeak.org/squeak/uploads/MorphicGUIDemo.2.cs.gz > > Could you please explain in more details what you would like to build? > > --Hannes > > On 2/21/17, Tim Cuthbertson <ratcheer(a)gmail.com> wrote: > > I am trying to start a Morphic application. I have read a lot of > tutorials, > > but I can't figure out how to program my submorphs. > > > > I have created my top level as a subclass of PasteUpMorph, opened it, and > > embedded a ScriptableButton and, separately, a RoundRect into which I > have > > embedded a TextMorph. (eventually, I plan to have five siblings of each > of > > these submorphs, but I'm trying to start the project, simply). > > > > I think I am supposed to start programming these submorphs from my > > PasteUpMorph, in which they are all directly or indirectly embedded. If I > > inspect the PasteUpMorph subclass, I can see the others as submorphs of > it, > > but if I browse it, I don't see any objects into which to put any code. I > > just see an empty PasteUpMorph. > > > > How do I access and code the submorphs within subclasses (I think) of my > > top level morph? > > > > Tim Cuthbertson > > > > No, I had not come across that example of "How to work with multiple text > morphs". I will study it and your other link. > > I am starting a project (just as an example to learn Squeak) to come up > with a Yahtzee game clone. My text morphs will simply display a number that > represents a randomly rolled die. The button morphs will allow the user to > select whether a particular die is to be held from being rerolled. There > will be an additional button to allow the user to re-roll unheld dice. > > I have this model working in a text-based model, but I decided to try to > re-implement it in a morphic GUI framework. > > Thank you for the tips. > > Tim Cuthbertson >

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Using squeak with a script?
by Jacques Harmand 23 Feb '17

23 Feb '17

Hi list, I try to use squeak to execute the following basic Smalltalk script (in a file "hello.st") "Transcript show: 'Hello world'; cr." from the command line with Squeak. This works as expected with both GNU Smalltalk and Pharo, but with Squeak nothing happens: Squeak seems to wait forever. If I add "Smalltalk snapshot: false andQuit: true." after the above line, the execution of the script terminates, but without printing anything. I use the Squeak 5.0-201608171728 VM and the Squeak5.1-16548 image. Any hints? Thank you.

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Beginners Digest, Vol 123, Issue 4
by Tim Cuthbertson 23 Feb '17

23 Feb '17

Thank you, Hannes. That is exactly the kind of info I have been trying to find. Tim Cuthbertson ---------- Forwarded message ---------- From: H. Hirzel <hannes.hirzel(a)gmail.com> Date: Wed, Feb 22, 2017 at 5:34 PM Subject: Re: [Newbies] Beginners Digest, Vol 123, Issue 4 To: "A friendly place to get answers to even the most basic questions about Squeak." <beginners(a)lists.squeakfoundation.org> Cc: ratcheer(a)gmail.com Assuming you have named your instances of TextMorph and embedded them in the PasteUpMorph so that they are in the 'submorphs' collection of the PasteUpMorph you may access them by name from the PasteUpMorph with self submorphs detect: [:m | m externalName = 't1'] (access to morph named 't1'). This is a moderate effort and allows you to construct the GUI through direct manipulation. Please note as well that in a recent trunk image the halo menu list of a SimpleButtonMorph has a 'set target' menu entry which allows you to set to any target by pointing at it. --Hannes On 2/22/17, Tim Cuthbertson <ratcheer(a)gmail.com> wrote: > Tim, > >> One of the articles on Morphic says you can create composite morphs > either programatically, >> using addMorph, or using drag and drop from the Objects menu of the > morphic World. I have >> done the latter, because it is easier to design my layout that way. Once > that has been done, >> how do I address the submorph from a browser? If I inspect my button > submorph, for example >>, all it will tell me about it is "a ScriptableButton<Button>(1364754)". I > have no idea how to >> access that object in order to do anything with it. This is the crux of > my questions. > > This is, in my opinion, the most significant limitation of Morphic for > interactive GUI creation. In the original Morphic in Self the way to > handle this was to simply search through all your submorphs for the one > you were interested in, usually by comparing the morphType string. In > Squeak we can add properties to Morphs very easily so that would be one > way to tag it. Something like: > > | stopButton | > stopButton := nil. > self submorphsDo: [ :m | (m hasProperty: #stopButton) ifTrue: [ > stopButton := m ] ]. > stopButton ifNotNilDo: [ :b | b ... ]. > > Code like this will work even if there are no stopButtons at all and if > you add more than one the code will just use the last one and ignore the > others. > > After creating the button you have to get its halo and use the red > button (menu) with the debug->inspect morph option to set the > #stopButton property. > > An alternative to using specially created properties is to depend on the > morph's name. In your case it is "a ScriptableButton<Button>(1364754)".. > So: > > self subMorphsDo: [ :m | (m name includesSubString: 'Button') ifTrue: > ... > > should work for you as long as there is only one button. > > -- Jecel > > Thank you, Jecel, for trying to help me solve my problem. However, my plan > is to have multiple sibling morphs for both the buttons and the texts. > > So, I am diving in to trying to use addMorph: programatically to add > submorphs to my display. This allows me to hold a reference to each > submorph in named variables, through which I should then be able to specify > state changes and act on events to and from my submorphs. > > Maybe my mindset is just too old fashioned. Back in the 90's, I programmed > MVC applications in VisualWorks. I thought Morphic was supposed to be much > easier to use than MVC, but so far, I have not been able to figure out how > to control my objects in Morphic. > > Tim Cuthbertson >

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Re: [Newbies] Beginners Digest, Vol 123, Issue 4
by Tim Cuthbertson 22 Feb '17

22 Feb '17

Tim, > One of the articles on Morphic says you can create composite morphs either programatically, > using addMorph, or using drag and drop from the Objects menu of the morphic World. I have > done the latter, because it is easier to design my layout that way. Once that has been done, > how do I address the submorph from a browser? If I inspect my button submorph, for example >, all it will tell me about it is "a ScriptableButton<Button>(1364754)". I have no idea how to > access that object in order to do anything with it. This is the crux of my questions. This is, in my opinion, the most significant limitation of Morphic for interactive GUI creation. In the original Morphic in Self the way to handle this was to simply search through all your submorphs for the one you were interested in, usually by comparing the morphType string. In Squeak we can add properties to Morphs very easily so that would be one way to tag it. Something like: | stopButton | stopButton := nil. self submorphsDo: [ :m | (m hasProperty: #stopButton) ifTrue: [ stopButton := m ] ]. stopButton ifNotNilDo: [ :b | b ... ]. Code like this will work even if there are no stopButtons at all and if you add more than one the code will just use the last one and ignore the others. After creating the button you have to get its halo and use the red button (menu) with the debug->inspect morph option to set the #stopButton property. An alternative to using specially created properties is to depend on the morph's name. In your case it is "a ScriptableButton<Button>(1364754)".. So: self subMorphsDo: [ :m | (m name includesSubString: 'Button') ifTrue: ... should work for you as long as there is only one button. -- Jecel Thank you, Jecel, for trying to help me solve my problem. However, my plan is to have multiple sibling morphs for both the buttons and the texts. So, I am diving in to trying to use addMorph: programatically to add submorphs to my display. This allows me to hold a reference to each submorph in named variables, through which I should then be able to specify state changes and act on events to and from my submorphs. Maybe my mindset is just too old fashioned. Back in the 90's, I programmed MVC applications in VisualWorks. I thought Morphic was supposed to be much easier to use than MVC, but so far, I have not been able to figure out how to control my objects in Morphic. Tim Cuthbertson

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Re: [Newbies] Beginner Morphic Question
by Tim Cuthbertson 22 Feb '17

22 Feb '17

Date: Tue, 21 Feb 2017 22:41:36 +0100 From: "H. Hirzel" <hannes.hirzel(a)gmail.com> To: "A friendly place to get answers to even the most basic questions about Squeak." <beginners(a)lists.squeakfoundation.org> Subject: Re: [Newbies] Beginner Morphic Question Message-ID: <CAGQxfVjPLxhKo09-c9r-1XyUMT1qjCHXF4AWRFDuvkaaUsQHaw(a)mail.gmail.com> Content-Type: text/plain; charset=UTF-8 Have you seen this example http://wiki.squeak.org/squeak/526 ? Code http://wiki.squeak.org/squeak/uploads/MorphicGUIDemo.2.cs.gz Could you please explain in more details what you would like to build? --Hannes On 2/21/17, Tim Cuthbertson <ratcheer(a)gmail.com> wrote: > I am trying to start a Morphic application. I have read a lot of tutorials, > but I can't figure out how to program my submorphs. > > I have created my top level as a subclass of PasteUpMorph, opened it, and > embedded a ScriptableButton and, separately, a RoundRect into which I have > embedded a TextMorph. (eventually, I plan to have five siblings of each of > these submorphs, but I'm trying to start the project, simply). > > I think I am supposed to start programming these submorphs from my > PasteUpMorph, in which they are all directly or indirectly embedded. If I > inspect the PasteUpMorph subclass, I can see the others as submorphs of it, > but if I browse it, I don't see any objects into which to put any code. I > just see an empty PasteUpMorph. > > How do I access and code the submorphs within subclasses (I think) of my > top level morph? > > Tim Cuthbertson > No, I had not come across that example of "How to work with multiple text morphs". I will study it and your other link. I am starting a project (just as an example to learn Squeak) to come up with a Yahtzee game clone. My text morphs will simply display a number that represents a randomly rolled die. The button morphs will allow the user to select whether a particular die is to be held from being rerolled. There will be an additional button to allow the user to re-roll unheld dice. I have this model working in a text-based model, but I decided to try to re-implement it in a morphic GUI framework. Thank you for the tips. Tim Cuthbertson

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Beginner Morphic Question
by Tim Cuthbertson 21 Feb '17

21 Feb '17

I am trying to start a Morphic application. I have read a lot of tutorials, but I can't figure out how to program my submorphs. I have created my top level as a subclass of PasteUpMorph, opened it, and embedded a ScriptableButton and, separately, a RoundRect into which I have embedded a TextMorph. (eventually, I plan to have five siblings of each of these submorphs, but I'm trying to start the project, simply). I think I am supposed to start programming these submorphs from my PasteUpMorph, in which they are all directly or indirectly embedded. If I inspect the PasteUpMorph subclass, I can see the others as submorphs of it, but if I browse it, I don't see any objects into which to put any code. I just see an empty PasteUpMorph. How do I access and code the submorphs within subclasses (I think) of my top level morph? Tim Cuthbertson

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Balloon & Wonderland help
by Thej 16 Feb '17

16 Feb '17

I want to do some Logo-style drawing in 3D space and in my search for viable software, I found very few that were suitable. All good options (other than squeak) have been “Tile-ized” and I would prefer text based code. So over to Squeak with Balloon3D and Wonderland ;-) I installed Balloon3D from the SqueakSource repository into a fresh Squeak 5.1 (64bit). I can now see the Balloon3D-Wonderland categories in the Browser. The SqueakSource archive listed an updated plugin. How can I be certain it was installed (because some of the error messages I’ve been getting trying to open a Wonderland have stated that I don’t have proper 3D support [Warning: You do not have real 3D support] ). I also don’t see a Balloon3D-Plugin category in the browser. If it's not installed how do I install it? …and of course, I’m assuming Balloon Wonderlands are the only option to do Logo-like drawing in a 3D space in Squeak? Are there any other options? Can I do this in Open Croquet ? J

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Beginners February 2017