November 2013 - Pharo-users

Re: [Pharo-users] Scaled PNG image

by Igor Stasenko

On 21 November 2013 14:22, hilaire <hilaire.fernandes(a)gmail.com> wrote: > The problem is really not related to PNG bitmap as the same issue can be > exposed with simple, as in this example: > > | morph rectangle | > rectangle := RectangleMorph new color: (Color red alpha: 0.5). > morph := TransformationMorph new asFlexOf: rectangle. > morph scale: 0.7. > morph openInWorld > > > In this example, the red appears darker once the rectangle is scaled. > > Is it something related to the Blit ? I reallz don't know where to look. > > no idea.. Except that while adopting cairo surfaces i also has odd transparency issues until i realized that cairo surface stores pixel data using premultiplied alpha format,e.g.: pixelColor = (R*A, G*A, B*A, A) while bitblt assumes it is (R,G,B,A) > Hilaire > > > > -- > View this message in context: > http://forum.world.st/Scaled-PNG-image-tp4723754p4723975.html > Sent from the Pharo Smalltalk Users mailing list archive at Nabble.com. > > -- Best regards, Igor Stasenko.

Nov. 21, 2013

Re: [Pharo-users] Help with SQLite3 package

by Michel

Hi Joachim, I have a sqlite library in /usr/lib named 'libsqlite3.so.0.8.6'. This directory is of course in the path. I made a copy of this library in my pharo2.0/bin directory and changed its name to 'libsqlite3.so' and it fixed the problem ! So I got it thanks to your help and a little luck. Depending on the linux distro this library name would differ. Somebody knows where it is defined in the image ? Regards, Michel. > Hi Michel, > > I am neither a Pharo nor a sqlite expert, but I would guess the sqlite > library is not in your image directory or you are starting pharo > without setting the PATH to a location that contains the sqlite library. > > HTH, > > Joachim > > Am 20.11.13 18:13, schrieb Michel: >> Hi pharoers, >> >> I am a newbie with Pharo. >> >> I installed the SQLite3 package in the Pharo2 image with the >> MetacelloConfigurationBrowser and tried a test with this script : >> db := SQLiteConnection fileNamed: '/home/michel/base_CD/BaseCD.db'. >> resu := db executeQuery: 'SELECT * FROM T_album'. >> resu inspect. >> >> And I got this error : External module not found. >> >> I am on Fedora linux and I think that I should give somewhere (in >> SQLiteReference class ?) the address of the libsqlite3.so file. Am I >> right ? >> >> Kind Regards, >> Michel. >> >> > >

Nov. 21, 2013

Re: [Pharo-users] #subStrings: alternative preserving separators

by Camillo Bruni

On 2013-11-21, at 08:18, StÃ©phane Ducasse <stephane.ducasse(a)inria.fr> wrote: > Propose allSubStrings: with a couple of tests and a nice comment. > so that we improve the lib. if it forwards to split: this can be easily done (as pointed out by norbert): $| split: 'foo|bar||foobar|'

Nov. 21, 2013

Re: [Pharo-users] Help with SQLite3 package

by jtuchel＠objektfabrik.de

Hi Michel, I am neither a Pharo nor a sqlite expert, but I would guess the sqlite library is not in your image directory or you are starting pharo without setting the PATH to a location that contains the sqlite library. HTH, Joachim Am 20.11.13 18:13, schrieb Michel: > Hi pharoers, > > I am a newbie with Pharo. > > I installed the SQLite3 package in the Pharo2 image with the > MetacelloConfigurationBrowser and tried a test with this script : > db := SQLiteConnection fileNamed: '/home/michel/base_CD/BaseCD.db'. > resu := db executeQuery: 'SELECT * FROM T_album'. > resu inspect. > > And I got this error : External module not found. > > I am on Fedora linux and I think that I should give somewhere (in > SQLiteReference class ?) the address of the libsqlite3.so file. Am I > right ? > > Kind Regards, > Michel. > > -- ----------------------------------------------------------------------- Objektfabrik Joachim Tuchel mailto:jtuchel@objektfabrik.de Fliederweg 1 http://www.objektfabrik.de D-71640 Ludwigsburg http://joachimtuchel.wordpress.com Telefon: +49 7141 56 10 86 0 Fax: +49 7141 56 10 86 1

Nov. 21, 2013

Re: [Pharo-users] Cleaning up Voyage Documentation

by Johan Fabry

Hi Sabine, thank you for your observations, interesting pointers and offer for help! I will integrate as much as possible and your comments are certainly welcome! I am not so knowledgeable about data migration, I understand what you are saying but I have no deep insights. I will add something about data migration to the documentation but I think it will be brief. Greetings, On Nov 21, 2013, at 6:16 AM, Sabine KnÃ¶fel <sabine.knoefel(a)gmail.com> wrote: > Hi Johan, > > I use MongoDB and voyage for www.spesenfuchs.de and it works fine for me. > > My remarks: > > 1) you could also add VOMongoTransientDescription (see class comment) and VOMongoToManyDescription to chapter "enhancing storage". > > 2) "VORepository current reset" is imo important to know. As far as I understand, it forces to reload all objects from database. I need this after changing the VOMongo....Descriptions. > > 3) I like the possibility to have a look into the values in the database. For this, there are 2 very useful tools: http://rockmongo.com/ for windows and http://robomongo.org/ for mac. I recommend to use it. Helps a lot. > > 4) I think as far as you start to implement a real app, you need this solution to implement circular references http://forum.world.st/Voyage-Circular-references-td4691940.html#a4703493 > > 5) another not so important point > http://forum.world.st/your-opinion-about-storing-FixedDecimal-in-Mongo-td47… > > 6) I think you do also know: > http://esug.org/data/ESUG2013/4-Thu/03-ESUG2013%20-%20VoyageTutorial.pdf > http://smallworks.com.ar/web/blog > > 7) Last point, you could add some words/thoughts about data migration: what do I mean with this? Today, my model is as it is. My app runs. Data is generated in MongoDB. But after e.g. one month, I decide to change my model. Now, there are 2 possibilities: migrate all data while installing the new version or some kind of "lazy" migration at the moment, the object is loaded from mongo (I do this within the magritte description). Both has advantages and disadvantages and depends on the situation. I am interested in other opinions and solutions for this. > > If I can contribute more please tell me. > > Regards > Sabine > ---> Save our in-boxes! http://emailcharter.org <--- Johan Fabry - http://pleiad.cl/~jfabry PLEIAD lab - Computer Science Department (DCC) - University of Chile

Nov. 21, 2013

Re: [Pharo-users] Scaled PNG image

by hilaire

The problem is really not related to PNG bitmap as the same issue can be exposed with simple, as in this example: | morph rectangle | rectangle := RectangleMorph new color: (Color red alpha: 0.5). morph := TransformationMorph new asFlexOf: rectangle. morph scale: 0.7. morph openInWorld In this example, the red appears darker once the rectangle is scaled. Is it something related to the Blit ? I reallz don't know where to look. Hilaire -- View this message in context: http://forum.world.st/Scaled-PNG-image-tp4723754p4723975.html Sent from the Pharo Smalltalk Users mailing list archive at Nabble.com.

Nov. 21, 2013

Re: [Pharo-users] SimplePersistence ...

by Norbert Hartl

Am 21.11.2013 um 13:01 schrieb Torsten Bergmann <astares(a)gmx.de>: >>> Good work! I happy for each new project on pharo-contribution. >>> This is the evolution of pharo-contribution over the last year! >>> <showChart.png> >> >> Impressive. >> >> Thank you, and the rest of the team, and INRIA, for this very useful resource. > > Yes, thank you! > > And the story continues: with the PharoLauncher project [1] one is able to > easily download a CI built image and run it locally. > > > [1] https://ci.inria.fr/pharo-contribution/job/PharoLauncher/ How do you use it? Iâve just downloaded but failed to see how I can work with it. Creating an image from a template is nice. If I open an image and save it under a new name I cannot start that image from PharoLauncher, can I? What are the most prominent use cases behind PharoLauncher? thanks, Norbert

Nov. 21, 2013

Re: [Pharo-users] Problems while loading Magritte to pharo2.0

by Mariano Martinez Peck

Which version of Magritte are you using? I am downloading: spec project: 'Magritte' with: [ spec className: 'ConfigurationOfMagritte3'; loads: #('Core' 'Tests' 'Seaside'); file: 'ConfigurationOfMagritte3'; repository: 'http://www.smalltalkhub.com/mc/Magritte/Magritte3/main' ]. with version '3.0.1' and I have no problem. Cheers, On Thu, Nov 21, 2013 at 3:28 AM, Thushar G R <thushar.gr(a)gmail.com> wrote: > Hi All, > > I encounter problems while installing magritte3 from the configurations > browser. While loading, it removes #trimBoth #trimRight etc. messages from > String. I wonder if anyone else is experiencing the problem. > > > Thanks already, > > thushar > -- Mariano http://marianopeck.wordpress.com

Nov. 21, 2013

SimplePersistence ...

by Torsten Bergmann

>> Good work! I happy for each new project on pharo-contribution. >> This is the evolution of pharo-contribution over the last year! >> <showChart.png> > >Impressive. > >Thank you, and the rest of the team, and INRIA, for this very useful resource. Yes, thank you! And the story continues: with the PharoLauncher project [1] one is able to easily download a CI built image and run it locally. [1] https://ci.inria.fr/pharo-contribution/job/PharoLauncher/

Nov. 21, 2013

Re: [Pharo-users] SimplePersistence ...

by Sven Van Caekenberghe

On 21 Nov 2013, at 11:48, Camillo Bruni <camillobruni(a)gmail.com> wrote: > Good work! I happy for each new project on pharo-contribution. > This is the evolution of pharo-contribution over the last year! > <showChart.png> Impressive. Thank you, and the rest of the team, and INRIA, for this very useful resource. With the JobTemplate and all the explanations, it is all very easy to set up. Here too, it is the combination of lots of different technologies that makes all this possible. Now, in hindsight, it is hard to appreciate all the work that went into it. But it was certainly worth it. Sven > On 2013-11-21, at 08:28, Torsten Bergmann <astares(a)gmx.de> wrote: > >> ... moved to STHub http://smalltalkhub.com/#!/~TorstenBergmann/SimplePersistence with page providing some initial docu and links >> ... is now on CI https://ci.inria.fr/pharo-contribution/job/SimplePersistence/ >> ... is GREEN for Pharo20, Pharo30 with stable (3.0) and development (3.0.1) since a few minutes >> ... is loadable from Config browser in Pharo20 and Pharo3.0 >> >> Have fun >> Torsten and Sean >> >> >

Nov. 21, 2013