June 2015 - Pharo-users - lists.pharo.org

Displaying an image from a file

by Laura Risani

Hi all, How can i make a morph display an image from a file at my hd? How can i further "save" this image inside a class so to be ported via packages? Thanks, Laura

June 27, 2015

Re: [Pharo-users] [ OT ] About Encodings and Character Sets

by Johan Fabry

> On Jun 27, 2015, at 07:04, Sven Van Caekenberghe <sven(a)stfx.eu> wrote: > > PS: in Pharo, the first part of this draft might help too: > > Character Encoding and Resource Meta Description > > http://stfx.eu/EnterprisePharo/Zinc-Encoding-Meta/ > > A newer version will be part of the upcoming book. And to complete Svenâs mail, this newer version is available online: https://ci.inria.fr/pharo-contribution/view/Books/job/EnterprisePharoBook/l… :-) ---> Save our in-boxes! http://emailcharter.org <--- Johan Fabry - http://pleiad.cl/~jfabry PLEIAD lab - Computer Science Department (DCC) - University of Chile

June 27, 2015

[ OT ] About Encodings and Character Sets

by Sven Van Caekenberghe

This is a nice article: What Every Programmer Absolutely, Positively Needs to Know About Encodings and Character Sets to Work With Text http://kunststube.net/encoding/ Which refers to this well known article: The Absolute Minimum Every Software Developer Absolutely, Positively Must Know About Unicode and Character Sets (No Excuses!) http://www.joelonsoftware.com/articles/Unicode.html Sven PS: in Pharo, the first part of this draft might help too: Character Encoding and Resource Meta Description http://stfx.eu/EnterprisePharo/Zinc-Encoding-Meta/ A newer version will be part of the upcoming book.

June 27, 2015

Re: [Pharo-users] [Ann] DragPanels: Floating palette windows with drag-and-drop in Morphic

by Alain Plantec

yes great! thanks Cheers Alain > On 27 Jun 2015, at 00:30, Thierry Goubier <thierry.goubier(a)gmail.com> wrote: > > Very cool. Thanks Stephan. > > Thierry > > Le 26 juin 2015 6:17 PM, "Stephan Eggermont" <stephan(a)stack.nl <mailto:stephan@stack.nl>> a Ã©crit : > Morphic offers everything needed to create highly interactive applications in Pharo. It is however, difficult to find out how to actually create those applications. Morphic tutorials provide a starting point, and are not very good at showing how the different features interact and are supposed to be used together. Morph has lots of methods, and some of them are not in the method category where you might expect them. The result is that most Morphs in Pharo do not use much of what Morphic has to offer. > > Wouldn't it be great if there would be some sample code, showing how Morphic can be used to great effect? > > Well, here is some code that takes a first step towards that goal. > DragPanels shows how to create a floating palette, filled with > wells that support dragging a property towards a target. It shows how to combine drag-and drop with click: and context menu actions, and show to give UI feedback when over a well and when holding the mouse down over an element that reacts to click:. > > You can see the code in action here: > https://vimeo.com/131889858 <https://vimeo.com/131889858> > > The color panel shows some colors. If you don't set the allowDropBlock, > it will work with any morph that responds to #color: (like the world). > By clicking on the plus, you can add more colors to the panel. The panel has a context menu to restore the default values. > > ColorPanel withSevenPaleColors > allowDropBlock: [ :source :target | > target class = CardMorph ]; > openInHand > > The people panel shows avatars belonging to an email addres. By default it uses gravatar for them, and caches the images. > > PeoplePanel new > defaultValues: > #('stephan(a)stack.nl <mailto:stephan@stack.nl>' > 'serge.stinckwich(a)gmail.com <mailto:serge.stinckwich@gmail.com>' > 'nicolas.anquetil(a)inria.fr <mailto:nicolas.anquetil@inria.fr>' > 'thierry.goubier(a)gmail.com <mailto:thierry.goubier@gmail.com>' > 'stephane.ducasse(a)inria.fr <mailto:stephane.ducasse@inria.fr>' > 'marcus.denker(a)inria.fr <mailto:marcus.denker@inria.fr>'); > allowDropBlock: [ :source :target | > target class = CardMorph ]; > openInHand > > When dropping, the dragSource sends #color: resp. #email: to the target by default. By setting the dropSelector of the DragWell this > can be overridden. > > You can try the code by do-ing > > Gofer new > smalltalkhubUser: 'StephanEggermont' project: 'Dragpanels' > package: 'DragPanels'; > load. > > It is used in (a work in progress) > > Gofer new > smalltalkhubUser: 'StephanEggermont' project: 'Documentation' > package: 'CardsMorphic'; > load. > > Stephan > > p.s. > > On the wishlist are > - add more color palettes > - add a dark theme, refactoring the colors > - add a small close cross in the title bar of the palette > - define the dropSelector in the panel, not the well > - support different sized wells, refactoring the sizes > - make the mouseOver rectangle color content dependent > - add pharo contributors as an avatar source > - add a configuration > > >

June 27, 2015

Re: [Pharo-users] [Ann] DragPanels: Floating palette windows with drag-and-drop in Morphic

by Thierry Goubier

Very cool. Thanks Stephan. Thierry Le 26 juin 2015 6:17 PM, "Stephan Eggermont" <stephan(a)stack.nl> a Ã©crit : > Morphic offers everything needed to create highly interactive applications > in Pharo. It is however, difficult to find out how to actually create those > applications. Morphic tutorials provide a starting point, and are not very > good at showing how the different features interact and are supposed to be > used together. Morph has lots of methods, and some of them are not in the > method category where you might expect them. The result is that most Morphs > in Pharo do not use much of what Morphic has to offer. > > Wouldn't it be great if there would be some sample code, showing how > Morphic can be used to great effect? > > Well, here is some code that takes a first step towards that goal. > DragPanels shows how to create a floating palette, filled with > wells that support dragging a property towards a target. It shows how to > combine drag-and drop with click: and context menu actions, and show to > give UI feedback when over a well and when holding the mouse down over an > element that reacts to click:. > > You can see the code in action here: > https://vimeo.com/131889858 > > The color panel shows some colors. If you don't set the allowDropBlock, > it will work with any morph that responds to #color: (like the world). > By clicking on the plus, you can add more colors to the panel. The panel > has a context menu to restore the default values. > > ColorPanel withSevenPaleColors > allowDropBlock: [ :source :target | > target class = CardMorph ]; > openInHand > > The people panel shows avatars belonging to an email addres. By default it > uses gravatar for them, and caches the images. > > PeoplePanel new > defaultValues: > #('stephan(a)stack.nl' > 'serge.stinckwich(a)gmail.com' > 'nicolas.anquetil(a)inria.fr' > 'thierry.goubier(a)gmail.com' > 'stephane.ducasse(a)inria.fr' > 'marcus.denker(a)inria.fr'); > allowDropBlock: [ :source :target | > target class = CardMorph ]; > openInHand > > When dropping, the dragSource sends #color: resp. #email: to the target > by default. By setting the dropSelector of the DragWell this > can be overridden. > > You can try the code by do-ing > > Gofer new > smalltalkhubUser: 'StephanEggermont' project: 'Dragpanels' > package: 'DragPanels'; > load. > > It is used in (a work in progress) > > Gofer new > smalltalkhubUser: 'StephanEggermont' project: 'Documentation' > package: 'CardsMorphic'; > load. > > Stephan > > p.s. > > On the wishlist are > - add more color palettes > - add a dark theme, refactoring the colors > - add a small close cross in the title bar of the palette > - define the dropSelector in the panel, not the well > - support different sized wells, refactoring the sizes > - make the mouseOver rectangle color content dependent > - add pharo contributors as an avatar source > - add a configuration > > > >

June 26, 2015

Re: [Pharo-users] [Ann] DragPanels: Floating palette windows with drag-and-drop in Morphic

by Stephan Eggermont

On 26-06-15 18:15, Stephan Eggermont wrote: > On the wishlist are - migrate to Bloc - make sure the panels stay behind spotter - replace the dialogs by something in the same style - use the panels in MorphicDraw Stephan

June 26, 2015

Re: [Pharo-users] Data Week: A week long workshop on data visualization using Pharo and Roassal

by Sebastian Heidbrink

Hi Offray, I started a software night here in town and I was also thinking about presenting the GTToolkit and Roassal to the crowd. You mentioned something that made made me wonder. You said that even non programmers liked the language. How did you approach them? Did you give them prepared interface implementations to Twitter and also a predefined GTToolkit browser implementation? Or did they just use the inspector? What does one need to use Twitter as a base for a demo? A developer account I guess? How stable is Pharo of it comes to the usage by non Smalltalkers and non developers? I thought one might spent most of the time with explaining what which tool is what not to use "just now!" Is there any library or framework available on smalltalkhub.com that you could recommend as a base for such presentation/workshop? Thank you! Sebastian Am 25.06.2015 um 20:00 schrieb Offray Vladimir Luna CÃ¡rdenas: > Hi all, > > All this week we have been doing a workshop on data visualization > using Pharo and Roassal on Grafoscopio. It started on last Monday and > will end on next Saturday. Details are on [1][2]. The experience so > far has been really gratifying and enjoyable. Newbies (with no > background on programming and/or Smalltalk) liked the language, the > Roassal capabilities and galleries and the inclusion of GT-Tools help > a lot with code learning and exploration. I was planing to announce > this before the event, but I had a really busy week and even I planned > to aski for help with bugs or other questions, but so far we had only > minor glitches. > > [1] http://mutabit.com/dataweek > [2] https://twitter.com/hashtag/DataWeekCo?src=hash > > So, thank all the community once more for your awesome work. Now that > Alexandre and others talk about "the blues" because of absences on > GitHub or SO, it important to talk about this small, significant and > even life changing experience that happens on next door, thanks to > what you have make possible. Let's not forget that. > > Cheers, > > Offray > > Ps: I will follow this thread with some questions that rose on the > workshop. I was thinking on asking the participants to share their > questions on SO, so may be is time to do it... We will see tomorrow. > >

June 26, 2015

[Ann] DragPanels: Floating palette windows with drag-and-drop in Morphic

by Stephan Eggermont

Morphic offers everything needed to create highly interactive applications in Pharo. It is however, difficult to find out how to actually create those applications. Morphic tutorials provide a starting point, and are not very good at showing how the different features interact and are supposed to be used together. Morph has lots of methods, and some of them are not in the method category where you might expect them. The result is that most Morphs in Pharo do not use much of what Morphic has to offer. Wouldn't it be great if there would be some sample code, showing how Morphic can be used to great effect? Well, here is some code that takes a first step towards that goal. DragPanels shows how to create a floating palette, filled with wells that support dragging a property towards a target. It shows how to combine drag-and drop with click: and context menu actions, and show to give UI feedback when over a well and when holding the mouse down over an element that reacts to click:. You can see the code in action here: https://vimeo.com/131889858 The color panel shows some colors. If you don't set the allowDropBlock, it will work with any morph that responds to #color: (like the world). By clicking on the plus, you can add more colors to the panel. The panel has a context menu to restore the default values. ColorPanel withSevenPaleColors allowDropBlock: [ :source :target | target class = CardMorph ]; openInHand The people panel shows avatars belonging to an email addres. By default it uses gravatar for them, and caches the images. PeoplePanel new defaultValues: #('stephan(a)stack.nl' 'serge.stinckwich(a)gmail.com' 'nicolas.anquetil(a)inria.fr' 'thierry.goubier(a)gmail.com' 'stephane.ducasse(a)inria.fr' 'marcus.denker(a)inria.fr'); allowDropBlock: [ :source :target | target class = CardMorph ]; openInHand When dropping, the dragSource sends #color: resp. #email: to the target by default. By setting the dropSelector of the DragWell this can be overridden. You can try the code by do-ing Gofer new smalltalkhubUser: 'StephanEggermont' project: 'Dragpanels' package: 'DragPanels'; load. It is used in (a work in progress) Gofer new smalltalkhubUser: 'StephanEggermont' project: 'Documentation' package: 'CardsMorphic'; load. Stephan p.s. On the wishlist are - add more color palettes - add a dark theme, refactoring the colors - add a small close cross in the title bar of the palette - define the dropSelector in the panel, not the well - support different sized wells, refactoring the sizes - make the mouseOver rectangle color content dependent - add pharo contributors as an avatar source - add a configuration

June 26, 2015

Re: [Pharo-users] Data Week: A week long workshop on data visualization using Pharo and Roassal

by stepharo

Superb! Le 26/6/15 05:00, Offray Vladimir Luna CÃ¡rdenas a Ã©crit : > Hi all, > > All this week we have been doing a workshop on data visualization > using Pharo and Roassal on Grafoscopio. It started on last Monday and > will end on next Saturday. Details are on [1][2]. The experience so > far has been really gratifying and enjoyable. Newbies (with no > background on programming and/or Smalltalk) liked the language, the > Roassal capabilities and galleries and the inclusion of GT-Tools help > a lot with code learning and exploration. I was planing to announce > this before the event, but I had a really busy week and even I planned > to aski for help with bugs or other questions, but so far we had only > minor glitches. > > [1] http://mutabit.com/dataweek > [2] https://twitter.com/hashtag/DataWeekCo?src=hash > > So, thank all the community once more for your awesome work. Now that > Alexandre and others talk about "the blues" because of absences on > GitHub or SO, it important to talk about this small, significant and > even life changing experience that happens on next door, thanks to > what you have make possible. Let's not forget that. > > Cheers, > > Offray > > Ps: I will follow this thread with some questions that rose on the > workshop. I was thinking on asking the participants to share their > questions on SO, so may be is time to do it... We will see tomorrow. > >

June 26, 2015

Re: [Pharo-users] Giving skype lectures to cameron students

by stepharo

Hi Paul > Have you considered setting them up as a 'view only' RFB user and let them > have at least one computer attach with a big monitior? The problem is that when I press on a keynote, it takes 4 seconds so that they see it :) > > I know its possible using the RFB package. > > > Or the reverse where the Pharo image is on one of their machines, many of > them are view only, and you are the RFB user controlling it remotely? I > wonder how many RFB connections are too many for one image. > > > Or alternately use freenx or xpra to achieve the same? > > > > > > > stepharo wrote >> Hi >> >> we are giving some skype lectures to cameron students with damien. >> A fun experience, because the network is so bad that I cannot demo Pharo >> interactively. >> But I'm learning from it. >> >> Stef > > > > > -- > View this message in context: http://forum.world.st/Giving-skype-lectures-to-cameron-students-tp4834082p4… > Sent from the Pharo Smalltalk Users mailing list archive at Nabble.com. > > >

June 26, 2015