February 2016 - Pharo-users

Re: [Pharo-users] Getting whether specific key is currently pressed

by Alexandre Bergel

Hi! I do not have my laptop, so I cannot try. This is a field where Roassal is weak indeed. Let us know if you come with a solution. What is your case? Having a selection box only when you press shift and drag and drop? Once back from holidays, I will check how it is done in JavaFX. Alexandre > Le 13 fÃ©vr. 2016 Ã 16:26, Jan BlizniÄenko <bliznjan(a)fit.cvut.cz> a Ã©crit : > > That's true, but I'm not sure that modifying TRMorph, TRMouseDragStart and > TRMouseDragEnd is the right way to go here, so I'm interested in finding > simpler solution if there is any. > > Jan > > > Peter UhnÃ¡k wrote >> Mouse and keyboard events are usually captured by TRMorph and then >> converted into Roassal events, so check there. >> >> Peter >> >> On Sat, Feb 13, 2016 at 4:06 PM, Jan BlizniÄenko < > >> bliznjan@.cvut > >> > >> wrote: >> >>> Hello >>> >>> I would like to ask whether is there any way to directly find out if >>> specific key (shift in my case) is currently pressed. I am trying to >>> implement own multi-selection of elements drawn on Roassal canvas, but I >>> do >>> not receive original MouseClick/Drag/whatever event with shiftKeyPressed, >>> but I receive only Roassal selection event without this kind of >>> information. >>> It would require lots of modifications on Roassal part to forward such >>> info >>> (although it would be possible I suppose), so I am looking for a way to >>> bypass it. >>> >>> Any help is appreciated. >>> >>> Jan BlizniÄenko >>> >>> >>> >>> -- >>> View this message in context: >>> http://forum.world.st/Getting-whether-specific-key-is-currently-pressed-tp4… >>> Sent from the Pharo Smalltalk Users mailing list archive at Nabble.com. > > > > > > -- > View this message in context: http://forum.world.st/Getting-whether-specific-key-is-currently-pressed-tp4… > Sent from the Pharo Smalltalk Users mailing list archive at Nabble.com. >

Feb. 14, 2016

Monticello reverse project dependency

by Peter UhnÃ¡k

Hi, I have the following situation: I have ProjectMain, and ProjectPlugin, now normally the Plugin depends on Main, however I would like to load Plugin as part of Main. The problem is that I can't specify to load Plugin after Main has been already fully loaded, if I do something like this BaselineOfMain>>baseline: spec <baseline> spec for: #common do: [ spec baseline: 'Plugin' with: [ spec repository: '...'; loads: #('default' OR 'plugin') ]. spec package: 'Main' with: [ spec requires: #(more stuff) ]; spec group: 'default' with: #('Main'). spec group: 'complete' with: #('default' 'Plugin') ] The BaselineOfPlugin has two groupsâ¦ "default", which loads also "Main", and "plugin", which doesn't. Now the problem is that there is no guaranteed way that Plugin will load after Main (in fact the should happen). If I load the plugin's #default, then Metacello ends up in an endless loop for some reason, and if I load #plugin, then it will load it before the Main which will break it (because Plugin has dependencies on main). So my question is: is it possible to reverse it somehow? Maybe add at the end `spec postLoadDoIt: #postLoadPlugins`, and then in that method manually load the plugins with Metacello/Gofer? Or is there a better way? Thanks, Peter

Feb. 13, 2016

Re: [Pharo-users] Getting whether specific key is currently pressed

by Henrik Nergaard

Quick and dirty: "Sensor shiftPressed" The modification keys (shift/ctrl/alt/cmd?) is available at the MorphicEvent side see the class UserInputEvent (variable buttons + protocol modifier state). Adding a variable to TRAbstractMouseEvent (removing those at TRAbstractMouseClick) which hold this information + the same messages as in "modifier stae" + in each rtMouse... method in RTMorph add a line setting the button state from the evt argument to the RTEvent type (for example "ee modifierState: evt buttons") should make this information available for any mouse event in Roassal. Best regards, Henrik -----Original Message----- From: Pharo-users [mailto:pharo-users-bounces@lists.pharo.org] On Behalf Of Jan Bliznicenko Sent: Saturday, February 13, 2016 8:27 PM To: pharo-users(a)lists.pharo.org Subject: Re: [Pharo-users] Getting whether specific key is currently pressed That's true, but I'm not sure that modifying TRMorph, TRMouseDragStart and TRMouseDragEnd is the right way to go here, so I'm interested in finding simpler solution if there is any. Jan Peter UhnÃ¡k wrote > Mouse and keyboard events are usually captured by TRMorph and then > converted into Roassal events, so check there. > > Peter > > On Sat, Feb 13, 2016 at 4:06 PM, Jan BlizniÄenko < > bliznjan@.cvut > > > wrote: > >> Hello >> >> I would like to ask whether is there any way to directly find out if >> specific key (shift in my case) is currently pressed. I am trying to >> implement own multi-selection of elements drawn on Roassal canvas, >> but I do not receive original MouseClick/Drag/whatever event with >> shiftKeyPressed, but I receive only Roassal selection event without >> this kind of information. >> It would require lots of modifications on Roassal part to forward >> such info (although it would be possible I suppose), so I am looking >> for a way to bypass it. >> >> Any help is appreciated. >> >> Jan BlizniÄenko >> >> >> >> -- >> View this message in context: >> http://forum.world.st/Getting-whether-specific-key-is-currently-press >> ed-tp4877401.html Sent from the Pharo Smalltalk Users mailing list >> archive at Nabble.com. >> >> -- View this message in context: http://forum.world.st/Getting-whether-specific-key-is-currently-pressed-tp4… Sent from the Pharo Smalltalk Users mailing list archive at Nabble.com.

Feb. 13, 2016

Re: [Pharo-users] Getting whether specific key is currently pressed

by Jan BlizniÄenko

That's true, but I'm not sure that modifying TRMorph, TRMouseDragStart and TRMouseDragEnd is the right way to go here, so I'm interested in finding simpler solution if there is any. Jan Peter UhnÃ¡k wrote > Mouse and keyboard events are usually captured by TRMorph and then > converted into Roassal events, so check there. > > Peter > > On Sat, Feb 13, 2016 at 4:06 PM, Jan BlizniÄenko < > bliznjan@.cvut > > > wrote: > >> Hello >> >> I would like to ask whether is there any way to directly find out if >> specific key (shift in my case) is currently pressed. I am trying to >> implement own multi-selection of elements drawn on Roassal canvas, but I >> do >> not receive original MouseClick/Drag/whatever event with shiftKeyPressed, >> but I receive only Roassal selection event without this kind of >> information. >> It would require lots of modifications on Roassal part to forward such >> info >> (although it would be possible I suppose), so I am looking for a way to >> bypass it. >> >> Any help is appreciated. >> >> Jan BlizniÄenko >> >> >> >> -- >> View this message in context: >> http://forum.world.st/Getting-whether-specific-key-is-currently-pressed-tp4… >> Sent from the Pharo Smalltalk Users mailing list archive at Nabble.com. >> >> -- View this message in context: http://forum.world.st/Getting-whether-specific-key-is-currently-pressed-tp4… Sent from the Pharo Smalltalk Users mailing list archive at Nabble.com.

Feb. 13, 2016

Re: [Pharo-users] Getting whether specific key is currently pressed

by Peter UhnÃ¡k

Mouse and keyboard events are usually captured by TRMorph and then converted into Roassal events, so check there. Peter On Sat, Feb 13, 2016 at 4:06 PM, Jan BlizniÄenko <bliznjan(a)fit.cvut.cz> wrote: > Hello > > I would like to ask whether is there any way to directly find out if > specific key (shift in my case) is currently pressed. I am trying to > implement own multi-selection of elements drawn on Roassal canvas, but I do > not receive original MouseClick/Drag/whatever event with shiftKeyPressed, > but I receive only Roassal selection event without this kind of > information. > It would require lots of modifications on Roassal part to forward such info > (although it would be possible I suppose), so I am looking for a way to > bypass it. > > Any help is appreciated. > > Jan BlizniÄenko > > > > -- > View this message in context: > http://forum.world.st/Getting-whether-specific-key-is-currently-pressed-tp4… > Sent from the Pharo Smalltalk Users mailing list archive at Nabble.com. > >

Feb. 13, 2016

Re: [Pharo-users] Recommended VM on Raspberry Pi ?

by Sven Van Caekenberghe

Here is what I did (on a fresh Raspberry Pi 2 B) $ uname -a Linux raspberrypi 4.1.13-v7+ #826 SMP PREEMPT Fri Nov 13 20:19:03 GMT 2015 armv7l GNU/Linux $ curl get.pharo.org/50 | bash $ wget http://files.pharo.org/sources/PharoV40.sources.zip $ wget http://files.pharo.org/vm/pharoS/raspbian/latest.zip Both the PharoS and squeak VM that comes with Raspbian 7 fail (not Spur compatible): $ squeak -nodisplay Pharo.image printVersion found gettext in path /home/pi/Pharo This interpreter (vers. 0) cannot read image file (vers. 6521). Press CR to quit... pi@raspberrypi ~/Pharo $ ./pharosvm/PharoS -nodisplay Pharo.image printVersion unknown option: -nodisplay $ ./pharosvm/PharoS --nodisplay Pharo.image printVersion This interpreter (vers. 6505) cannot read image file (vers. 6521). Press CR to quit... The Cog VM does work: $ ./cogspurlinuxhtARM/lib/squeak/5.0-3427/squeak -nodisplay Pharo.image printVersion [version] 5.0 #50581 It is way faster than PharoS on an older B+. But it does have an annoying slowdown in shutting down: it starts up OK, executes its eval expression immediately, but then seems to wait a couple of seconds before shutting down: pi@raspberrypi ~/Pharo $ echo `date`; time ./cogspurlinuxhtARM/lib/squeak/5.0-3427/squeak -nodisplay Pharo.image eval 'DateAndTime now'; echo `date` Sat Feb 13 15:45:44 UTC 2016 2016-02-13T15:45:44.860574+00:00 real 0m7.415s user 0m7.210s sys 0m0.250s Sat Feb 13 15:45:51 UTC 2016 This takes 7 seconds, while the DateAndTime now is printed just .86 seconds after starting. Running an HTTP server worked fine. I will try to get my actual app running and then test OS(Sub)Process. Sven PS: it is a bit odd that the latest Cog VM was published in August, nothing new since then. > On 13 Feb 2016, at 09:46, ClÃ©ment Bera <bera.clement(a)gmail.com> wrote: > > Hello Sven, > > You can use the VM with the JIT on the Pie now (Spur Cog VM). It is deployed by default on the recent raspberry pis and has millions of users for Squeak and Scratch since August 2015 (the raspberry pie fondation paid Tim for the ARM JIT on the Cog because of the size of their user base). > > As far as I know there is no way to build it in the Pharo VM branch. Just pick a version compiled from the trunk, that should work fine with the latest Pharo 5 (note that it requires a Spur image, so it needs one of the latest Pharo 5). Here is where you can get it: > http://www.mirandabanda.org/files/Cog/VM/VM.r3427/cogspurlinuxhtARM-15.33.3… > > Now even with performance improvement of the VM, some people reported that the UI of the Pharo image is too slow to be usable on the raspberry pi 1 (Nautilus takes *many* seconds to open for example, same for GT tools). Try and report your experience. > > On many benchs, the JIT VM for the pie has been reported on average 3 to 5x faster than the Stack VM. Note that the new FFI, even if it reuses the VM FFI backend, is dependent on x86, hence you need to use the old FFI syntax to have it working on the raspberry pie (there is some code to load in the image to do so). > > Have fun and report your experience with the raspberry pi and Pharo please, > > Clement > > > 2016-02-12 23:05 GMT+01:00 Sven Van Caekenberghe <sven(a)stfx.eu>: > Hi, > > I have been using the PharoS VM for a Pharo 4 based app on Raspberry Pi (Rasbian). > > This VM is quite slow. > > Now that Pharo 5 is Spur based, what is the recommended VM on that platform ? > > I was hoping to use a faster VM, if that is available. > > Is anyone having some concrete experience in this area ? > > Thx, > > Sven > > > > <Screen Shot 2015-12-17 at 10.21.48 AM.png>

Feb. 13, 2016

[UpdatedPharoByExample] Collection chapter

by stepharo

Hi guys here is a new chapter for UpdatedPharoByExample. Stef

Feb. 13, 2016

Getting whether specific key is currently pressed

by Jan BlizniÄenko

Hello I would like to ask whether is there any way to directly find out if specific key (shift in my case) is currently pressed. I am trying to implement own multi-selection of elements drawn on Roassal canvas, but I do not receive original MouseClick/Drag/whatever event with shiftKeyPressed, but I receive only Roassal selection event without this kind of information. It would require lots of modifications on Roassal part to forward such info (although it would be possible I suppose), so I am looking for a way to bypass it. Any help is appreciated. Jan BlizniÄenko -- View this message in context: http://forum.world.st/Getting-whether-specific-key-is-currently-pressed-tp4… Sent from the Pharo Smalltalk Users mailing list archive at Nabble.com.

Feb. 13, 2016

Re: [Pharo-users] [ANN] airflowing shut down

by Sven Van Caekenberghe

> On 13 Feb 2016, at 13:20, Sebastian Sastre <sebastian(a)flowingconcept.com> wrote: > > Hi guys, > > TL;DR: it didnât reached expectations so weâre shutting down and moving on into other business that are doing great. > > More details in the release available here: > http://airflowing.com > > Including references to the parts weâve open-sourced > > The Smalltalk community has a special place in my heart :) > > Thank you guys And thank you for doing this project in the first place. Too bad it did not work out. Best of luck with all your future projects. Hopefully you'll be using Pharo again in the future. Sven

Feb. 13, 2016

[ANN] airflowing shut down

by Sebastian Sastre

Hi guys, TL;DR: it didnât reached expectations so weâre shutting down and moving on into other business that are doing great. More details in the release available here: http://airflowing.com Including references to the parts weâve open-sourced The Smalltalk community has a special place in my heart :) Thank you guys

Feb. 13, 2016