October 2016 - Pharo-users - lists.pharo.org

location of package SkipLists from ConfigurationOfFuzzySearch?
by PAUL DEBRUICKER Oct. 15, 2016

Oct. 15, 2016

Hi - I'm trying to load this package http://smalltalkhub.com/#!/~hernan/FuzzySearcher and MC cannot locate the SkipLists package. Is it published anywhere? Thanks Paul

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GUI Builder
by Roman G Oct. 14, 2016

Oct. 14, 2016

Im sorry if this a repeated question. IÂ´m a newbie to Pharo. I would like to know what are the available tools for designing GUIs for desktop applications (a la Delphi/Visual Basic). In the Pharo by Example book there is only one chapter dedicated to GUI building by code. Thanks in advance. -- Saludos. Roman.

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Pharo5 download for linux - interpreter cannot read image file
by Andreas Sunardi Oct. 13, 2016

Oct. 13, 2016

I'm on CentOS 6.5 and I downloaded Pharo 5 for GNU/Linux w. libc < 2.15 and for CentOS. Both won't start (I have no problem with Windows version): $ pharo This interpreter (vers. 6505) cannot read image file (vers. 6521). Press CR to quit... I'm unable to find report or information about this issue on the web. I think it was like this ~2 months ago as well. Is this a known issue? First time posting question in this mailing list, so I beg your pardon if I break any mailing list rule. -- Andreas S

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Debugger with inlined methods
by Vitor Medina Cruz Oct. 13, 2016

Oct. 13, 2016

Hello, I was TTDing today with Pharo and some odd thing happened. I had a method that just returned false and while debugging I could not step into it (i wanted to change the method while debugging), I suppose the method was inlined and so debugging was not available, is that correct? Regards, Vitor

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UK Smalltalk User Group Meeting - Monday, October 24th
by Giovanni Corriga Oct. 11, 2016

Oct. 11, 2016

Hi, The next meeting of the UK Smalltalk User Group Meeting will be on Monday, October 24th. We'll meet at our usual venue The Counting House (http://www.the-counting- house.com/) at 7pm. If you'd like to join us, you can just show up at the pub. You can also sign up in advance at the meeting's Meetup page: https://www.meetup.com/UKSTUG/events/233683243/ . Thanks, Giovanni

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double dispatch example
by stepharo Oct. 11, 2016

Oct. 11, 2016

Hi If you happen to know a double dispatch situation in Pharo, I'm interested since I'm revisiting my lecture. Stef

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Small "code" editor example for improving a GUI
by Offray Vladimir Luna CÃ¡rdenas Oct. 10, 2016

Oct. 10, 2016

Hi, I would like to create some GUI that would be essentially a text area field plus some buttons. The idea is to support - Font size increasing/decreasing. - Syntaxt highlighting for markup languages. I gave a glimpse to the RubTextAreaExamples yesterday, but if anyone knows a more complete example to start with, that would be really helpful. Cheers, Offray

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Spec: DropList question
by Brad Selfridge Oct. 10, 2016

Oct. 10, 2016

Is there any way for the Spec DropList, when initially painted, to NOT display the first item in the list. I'm trying to build a dynamic spec window that uses the droplist value to determine what to paint and I want the user to select the droplist item rather than a default. Thanks, ----- Brad Selfridge -- View this message in context: http://forum.world.st/Spec-DropList-question-tp4918488.html Sent from the Pharo Smalltalk Users mailing list archive at Nabble.com.

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Pillar book makefile or template is broken.
by stepharo Oct. 9, 2016

Oct. 9, 2016

Hi Is there anybody maintaining Pillar? I did wget https://raw.githubusercontent.com/pillar-markup/pillar/master/download.sh chmod +x download.sh ./download.sh ./pillar archetype book ogrammingArchetype make pdf git submodule update --init --recursive mkdir -p ./build ln -fs ../support ./build support/latex/sbabook/gitinfo2.sh > build/gitHeadLocal.gin /bin/sh: support/latex/sbabook/gitinfo2.sh: Permission denied make: *** [build/gitHeadLocal.gin] Error 126 I have no idea how to fix it. in the past I removed this git version script because it was going in my way. Stef

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Re: [Pharo-users] Intro to Microsoft COM for Smalltalkers
by Thibault Raffaillac Oct. 9, 2016

Oct. 9, 2016

Thanks for these mails, that's actually very helpful! I am working on a shorter syntax for animations at the moment (than GLMAnimation, Viva, Bloc-Animation), and could not find a proper equivalent to requestAnimationFrame (i.e. that would be independent of any UI yet in sync with display, and as simple as possible). My solution was to repeatedly register to deferredUIMessages, implementing an intermediate block to add a timestamp like requestAnimationFrame (works wonders http://smalltalkhub.com/#!/~ThibaultRaffaillac/Animation) Cheers, Thibault ps: I'll ask Guille asap for the state of ReactiveExtensions (lacks comments) > Also, check > > MorphicUIManager>>#spawnNewProcess > > UIProcess := [ > [World doOneCycle. Processor yield. false] whileFalse: []. > ] newProcess priority: Processor userSchedulingPriority. > UIProcess name: 'Morphic UI Process'. > UIProcess resume > > digging into doOneCycle, you'll find: > > #doOneCycleFor: aWorld > "Do one cycle of the interaction loop. This method is called *repeatedly > *when > the world is running. This is a moderately private method; a better > alternative is usually either to wait for events or to check the state of > things from #step methods." > > self interCyclePause: MinCycleLapse. > self doOneCycleNowFor: aWorld. > > > The interCyclePause is what make the UI timing alignment proper (notice > serverMode) [and some Squeak remnant mention]: > > interCyclePause: milliSecs > "delay enough that the previous cycle plus the amount of delay will equal > milliSecs. If the cycle is already expensive, then no delay occurs. > However, if the system is idly waiting for interaction from the user, the > method will delay for a proportionally long time and cause the overall CPU > usage of *Squeak* to be low. > If self serverMode returns true then, always do a complete delay of 50ms, > independant of my argument. This prevents the freezing problem described in > Mantis #6581" > > | wait wait2 | > "*a very long assignment*" > wait := self serverMode > ifTrue: [ 50 ] > ifFalse: > [ wait2 := (lastCycleTime notNil and: [CanSurrenderToOS ~~ false]) > ifFalse: [ 0 ] > ifTrue: [ lastCycleTime + milliSecs - Time millisecondClockValue ]. > > self flag: 'Issue 14754 - wait2>millisecs is only True for clock > rollover. Remove it once DelayScheduler based on microsecondClock - Ben > Coman 19.01.2015'. "*<---- maybe we want this #flag: not to be called all > the time* " > wait2 > milliSecs > ifTrue: [ 0 ] > ifFalse: [ wait2 ]. > ]. > wait > 0 ifTrue: [ (Delay forMilliseconds: wait) wait ]. "<------- wait > is not #>>wait" > > lastCycleTime := Time millisecondClockValue. > CanSurrenderToOS := true. > > Now, yeah, how do get stuff to be painted on the screen? > > Like this: > > displayWorld: aWorld submorphs: submorphs > "Update this world's display." > > | deferredUpdateMode handsToDraw allDamage | > > submorphs do: [:m | m fullBounds]. "force re-layout if needed" > self checkIfUpdateNeeded ifFalse: [^ self]. "display is already up-to-date" > > deferredUpdateMode := self doDeferredUpdatingFor: aWorld. > deferredUpdateMode ifFalse: [self assuredCanvas]. > canvas roundCornersOf: aWorld during:[ | worldDamageRects handDamageRects | > worldDamageRects := self drawWorld: aWorld submorphs: submorphs > invalidAreasOn: canvas. "repair world's damage on canvas" > "self handsDo:[:h| h noticeDamageRects: worldDamageRects]." > handsToDraw := self selectHandsToDrawForDamage: worldDamageRects. > handDamageRects := handsToDraw collect: [:h | h savePatchFrom: canvas]. > allDamage := worldDamageRects, handDamageRects. > > handsToDraw reverseDo: [:h | canvas fullDrawMorph: h]. "draw hands onto > world canvas" > ]. > "*make this true to flash damaged areas for testing*" > self class debugShowDamage ifTrue: [aWorld flashRects: allDamage color: > Color black]. > > canvas finish. > "quickly copy altered rects of canvas to Display:" > deferredUpdateMode > ifTrue: [self forceDamageToScreen: allDamage] > ifFalse: [canvas showAt: aWorld viewBox origin invalidRects: allDamage]. > handsToDraw do: [:h | h restoreSavedPatchOn: canvas]. "restore world > canvas under hands" > Display deferUpdates: false; forceDisplayUpdate. > > The VM will take care of throwing the bits to the display in various ways. > Interesting to look how it is done for Windows, OSX, and Linux. > > So you have about a full view now. > > Timing wise, there is also some interaction with the VM occuring elsewhere. > Pharo is still polling deep inside. epoll etc isn't there yet, hence the > little idle CPU usage when doing nothing. > > Good luck doing this UI trip with other platforms, not to mention change or > instrument it the way you like. > > Pharo is really cool for this as it helps in learning about a lot of things. > > Want to do sockets? > Do the high level stuff in Pharo and dig in the VM to see how it is done > down under for a set of platforms. > > Enjoy. > > Phil

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