February 2017 - Pharo-dev - lists.pharo.org

Re: [Pharo-dev] [Pharo-users] Pharo 5 and retina displays in 2016?
by Tim Mackinnon April 20, 2017

April 20, 2017

Adding this to the Dev user group - is there really no solution for this? I read a few old messages from 2012 about different fonts but nothing seemed to work from what I could see. Has everyone just been putting up with the fuzziness and got used to it? As a new Retina display user, I love the clarity in other apps and find it quite jarring in Pharo. I was going to do a brown bag session on Smalltalk with the current team Iâm working with, however as they all have retina Macs, I think I may reconsider this as unless you love the language its another thing for people to throw stones at. As Stephan mentions below, were Tobiasâ changes not viable? Is there anything we can do to help get them safely in - or can I try it on an experimental branch? Tim > On 29 Nov 2016, at 21:02, Stephan Eggermont <stephan(a)stack.nl> wrote: > > On 29/11/16 00:34, Tim Mackinnon wrote: >> Or is this still the same issue thatâs been hanging around for a long >> time as its hard to easily fix? > > Tobias Pape wrote some vm changes that solved the problem this summer, and they somehow interfered, so were reverted. I posted some pictures > on twitter 10/11-7 of it working with both Pharo & Squeak. > > Stephan > > > >> Hi Guys - its been a while since Iâve had a chance to get back into some coding in Smalltalk, and took the plunge again with a new laptop and Pharo 5, however the screen is really blurry? >> >> Doing a google search, I can see this same question raised back in 2012, but has there been no progress in this intervening years or has a workaround not been documented for google to find? Or has everyone just got used to it, and I need to hand in there... >> >> I have tried using a different font - but not sure what constitutes a true-type font (are these the same as free-type mentioned in the Settings Browser?). Has anyone found a font that makes everything look crisp (I tried Helvetica but its only marginally better). >> >> Or is this still the same issue thatâs been hanging around for a long time as its hard to easily fix? >> >> Tim

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Some test where Spur more slow than Cog
by Denis Kudriashov April 12, 2017

April 12, 2017

Hi. I found case where Spur more slow than Cog. Not much but. prototype := BorderedMorph new. result := [prototype veryDeepCopy ] benchFor: 2 seconds. In my computer I got: Cog: a BenchmarkResult(16,982 iterations in 2 seconds 1 millisecond. 8,487 per second) Spur: a BenchmarkResult(12,507 iterations in 2 seconds 33 milliseconds. 6,152 per second). Is it expected behavior for such case?

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[VM] Windows VM SurfacePlugin.dll LoadLibrary failure
by Peter Uhnak April 1, 2017

April 1, 2017

Hi, recently (couple of days ago) sometimes when I start Pharo there's a box at the bottom "Debug console" with the following info ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ # Debug console # To close: F2 -> 'debug options' -> 'show output console' # To disable: F2 -> 'debug options' -> 'show console on errors' LoadLibrary(SurfacePlugin) (998: Invalid access to memory location. ) LoadLibrary(SurfacePlugin.dll) (998: Invalid access to memory location. ) LoadLibrary(SurfacePlugin) (998: Invalid access to memory location. ) LoadLibrary(SurfacePlugin.dll) (998: Invalid access to memory location. ) LoadLibrary(SurfacePlugin) (998: Invalid access to memory location. ) LoadLibrary(SurfacePlugin.dll) (998: Invalid access to memory location. ) ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ I have Windows 10 & VM Version: Cog Spur VM 5.0 (release) from Feb 3 2017 (downloaded from files.pharo.org) This error results in Athens (and Roassal) not working, although Pharo itself seems fine. Reopening the image has no effect, and the only resolution is to do a system reboot. There is also crash.dmp from Feb 12 (possibly the day it started) containing ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Sun Feb 12 23:10:24 2017 Exception code: C0000005 Exception addr: 0040BDD0 Access violation (write access) at 00AFF43C EAX:FFFFFFFF EBX:74329850 ECX:549D7EBE EDX:00AFF43C ESI:74315F70 EDI:00489DB9 EBP:0887FF94 ESP:0887FF54 EIP:0040BDD0 EFL:00010206 FP Control: 0000027F FP Status: 00000000 FP Tag: 0000FFFF Crashed in some other thread ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Makes me wonder whether the SurfacePlugin.dll didn't somehow get corrupted... but then again there's no modification date change on the dll file, nor would it explain why rebooting fixes it. Thanks, Peter

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How to install Iceberg?
by Alexandre Bergel March 29, 2017

March 29, 2017

Hi all! I would like to give a try to Iceberg. I have no idea where to find it however. Cheers, Alexandre -- _,.;:~^~:;._,.;:~^~:;._,.;:~^~:;._,.;:~^~:;._,.;: Alexandre Bergel http://www.bergel.eu ^~:;._,.;:~^~:;._,.;:~^~:;._,.;:~^~:;._,.;:~^~:;.

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Pharo Papers
by Ben Coman March 27, 2017

March 27, 2017

And now for your regularly scheduled random trivia show... I was mildly curious about how many papers touched on Pharo. 1,110 on google scholar for... "pharo" "programming" http://tiny.cc/pharo-scholar 1,630 on normal google for... "pharo" "programming" "abstract" "introduction" "conclusion" "references" filetype:pdf http://tiny.cc/pharo-papers Probably a lot of overlap between them. cheers -ben

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inspector performance improvement
by Tudor Girba March 23, 2017

March 23, 2017

Hi, Andrei and Alex did a great job at improving the performance and scalability of the inspector. There are a couple of main improvements: - Added FastTable support for the Raw presentation for all objects. This implied completing the support for the tree presentation binding to fast table. - Moved the Items presentation for collections to FastTable. - Improved the rendering of Glamour to no longer rely on the default Morph>>#adoptPaneColor. It turns out that using adoptPaneColor triggers a relayout of the morph, even if it is not visible. We extended PanelMorph in the context of Glamour with a less needy logic. I will not tell you how fast it is. I would rather want you to play with it :). The change is already in the Moose image. It is not yet in Pharo, but it will be soon. In the meantime you can be load it in Pharo 6 like this: Gofer new smalltalkhubUser: 'Moose' project: 'GToolkit'; package: 'ConfigurationOfGToolkitCore'; load. (#ConfigurationOfGToolkitCore asClass project version: #stable) load To play with it, try this with both the current version and the new one and the Spec Inspector if you want (just make sure you save the image beforehand): collection := (1 to: 100000000) asArray. [collection inspect] timeToRun. collection := (1 to: 100000000). [collection inspect] timeToRun. (for these two ones notice that Items do not appear at all in the old implementation) [World inspect] timeToRun. There are still a couple of issues open, such as the sorting of the columns. We would need your help with testing this, and report possible missing issues. Cheers, Doru -- www.tudorgirba.com www.feenk.com "Obvious things are difficult to teach."

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Too frequent crashes :-(
by Alexandre Bergel March 16, 2017

March 16, 2017

Hi! Vincent and I are experiencing many crashes from GrafPort>copyBits. It crashes every couple of minutes. I know that not much can be done so far. Stability is my biggest concern with Pharo :-( I use the latest VM. Cheers, Alexandre -- _,.;:~^~:;._,.;:~^~:;._,.;:~^~:;._,.;:~^~:;._,.;: Alexandre Bergel http://www.bergel.eu ^~:;._,.;:~^~:;._,.;:~^~:;._,.;:~^~:;._,.;:~^~:;.

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How to listen for windows messages?
by lw1990 March 15, 2017

March 15, 2017

In the OS-Windows package, there exists the ability to use the windows api in Pharo. This is very powerful, and I intend to add more of the windows api into it (it's only partially implemented). This appears to all have been done with DllCalls (FFI calls) so far. A big part of interacting with windows is listening to/intercepting and responding to windows messages. For example, every time a user presses a key on the keyboard, a windows message will happen in the background for that key. If Pharo was aware of these messages, then Pharo could do things in response to hotkeys pressed on Windows (outside of a pharo window). It would also make reacting to events potentially nicer. Like making a windows-desktop-manager in Pharo that can tell when a new window is created by windows (maybe they opened notepad). It would certainly be better than an infinite loop or timer of 'get active window and compare to last active window and see if it changed'. Instead it would be 'when receive the WM_MESSAGE for new window created, notify Pharo so it can react'. How can I set up a windows message hook in Pharo? Please keep in mind I'm very new to programming, but I work from home and have lots of time to learn :-) -- View this message in context: http://forum.world.st/How-to-listen-for-windows-messages-tp4936285.html Sent from the Pharo Smalltalk Developers mailing list archive at Nabble.com.

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Why do we have doublequoting for "?
by stepharong March 12, 2017

March 12, 2017

about quoting ;( Hi I have a string '<li> Stéphane Ducasse and Damien Pollet, Fingerprints, Journal of Information System, 2010. </li> ' and when I do printIt in the debugger I get the following "'<li> Stéphane Ducasse and Damien Pollet, Fingerprints, Journal of Information System, 2010. </li> '" I do not get why we doublequote the character " inside string. It means that I have to remove all the " inside to string to be able to express tests. Stef

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Epicea - showing latest lost changes
by Ben Coman March 9, 2017

March 9, 2017

One thing I am missing from Epicea that I used to be able to do is being able to filter out old changes. If I've been thrashing some method back and forth between a few implementations, often I don't want to see *all* the old changes,only the latest ones. An option to restore old versions would also be nice, but I don't think that feature existed previously. cheers -ben

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