September 2017 - Pharo-users

Re: [Pharo-users] X11 options on Ubuntu VM / Athens rendering problems

by Hilaire

libcairo2:amd64 1.15.2-0intel1 is clearly not from the official repository. See on my ubuntu17.04: hilaire@PCHome:~$ dpkg -l | grep libcairo2 ii libcairo2:amd64 1.14.8-1 amd64Â Â Â Â Â Â Â Cairo 2D vector graphics library ii libcairo2:i386 1.14.8-1 i386Â Â Â Â Â Â Â Â Cairo 2D vector graphics library ii libcairo2-dev 1.14.8-1 amd64Â Â Â Â Â Â Â Development files for the Cairo 2D graphics library If you can wipe it out, you may sort out. Hilaire Le 29/09/2017 Ã 12:48, Igor Stasenko a Ã©critÂ : > Â package libcairo2:amd64 1.15.2-0intel1 cannot be configured because > libcairo2:i386 is at a different version (1.14.8-1) > Processing triggers for libc-bin (2.24-9ubuntu2.2) ... -- Dr. Geo http://drgeo.eu

Sept. 29, 2017

Re: [Pharo-users] [Demo] Creating Bloc Widgets with Pharo

by Stephane Ducasse

My suggestion is write tests and after try to build a Spec adapter. The spec adpater will be a really good client. Because with Boc the adapter should not exist at runtime. It should just be there for the registration but not a middle man like now. Stef On Thu, Sep 28, 2017 at 11:44 PM, stephan <stephan(a)stack.nl> wrote: > On 28-09-17 21:03, Stephane Ducasse wrote: >> >> Now how do you validate the API of your widgets. > > > Good question. In Morphic I had everything centralized in the Morph. > The advantage is that it is clear what influences what, the disadvantage is > that it easily results in very complex code. Here I have event handling > spread over multiple objects. That gives here a better separation of > concerns. The pane itself handles clicking, the dragInteraction object the > drag and drop. Separating these two works, but in a more complex application > there could be e.g. multiple drag and drop relationships. > >> I think that write test is a really because in that it will force us >> to have fully scriptable widgets. > > > Indeed. At the moment I am still trying to find out how I want to distribute > responsibilities. I welcome ideas on how to improve this. > > And of course I would like the dropping to also work on the last position. > > Stephan > > >

Sept. 29, 2017

Re: [Pharo-users] [Demo] Creating Bloc Widgets with Pharo

by Stephane Ducasse

But exposing internals of the encoding is not really good either. Graphical objects are complex still forcing all the logic to be set by client is a way to make that we will also get some spaghetti. Look In Morphic at the icon in the menu, we ended up have wrong reference all over the places. Just because the API was not good and did not encapsulate enough behavior. Stef On Thu, Sep 28, 2017 at 11:56 PM, stephan <stephan(a)stack.nl> wrote: > On 28-09-17 21:07, Stephane Ducasse wrote: >> >> For example why a BlElement cannot get >> invisible and visible in addition to visibility: BlVisibility visible. > > > It can, and if we do that systematically we end up with a BlElement with a > thousand methods. There are so many aspects that an element might need to > handle. Handling children, layout, styling, drawing, fonts, events, > visibility. Where should the border be? > > One thing I noted is that in Bloc we don't have a way to decide where to add > a dropped element in a parent that has a specified layout. In Morphic that > is also a responsibility of the layout. > > Stephan > > > > > >

Sept. 29, 2017

New Pharo booklet: Scraping HTML with XPath

by Stephane Ducasse

Hi we wanted to let you that a new booklet is available on http://books.pharo.org Stef and Peter

Sept. 29, 2017

Re: [Pharo-users] [Demo] Creating Bloc Widgets with Pharo

by Alexandre Bergel

Hi Stephan, Why not having PrInspector>>open ? How can I open your inspector? Cheers, Alexandre > On Sep 28, 2017, at 1:04 PM, Stephan Eggermont <stephan(a)stack.nl> wrote: > > Bloc is ready for your experiments. Here is my first one. > Please let me know what and how to improve. > > Bloc allows for the creation of beautiful widgets. > Here is a panel containing collapsible subpanels > that can be reordered with drag-and-drop. > > https://vimeo.com/235934701 > > Stephan > <Presentations-Widgets.st><ExpanderPanel.png>

Sept. 29, 2017

Re: [Pharo-users] X11 options on Ubuntu VM / Athens rendering problems

by Igor Stasenko

On 29 September 2017 at 11:23, Hilaire <hilaire(a)drgeo.eu> wrote: > Beside the official ones, are you using alternate repositories? It can > become a hell. > > In your posting, a Thoera dependency appeared... > > it looks like there's an error in dependency spec. because i have 64-bit cairo installed, and uninstalling theora drags half of the desktop stuff after itself.. oh.. looks like i found why: sudo dpkg -i libcairo2_1.14.8-1_i386.deb Selecting previously unselected package libcairo2:i386. (Reading database ... 541684 files and directories currently installed.) Preparing to unpack libcairo2_1.14.8-1_i386.deb ... De-configuring libcairo2:amd64 (1.15.2-0intel1) ... Unpacking libcairo2:i386 (1.14.8-1) ... dpkg: error processing package libcairo2:i386 (--install): package libcairo2:i386 1.14.8-1 cannot be configured because libcairo2:amd64 is at a different version (1.15.2-0intel1) dpkg: error processing package libcairo2:amd64 (--install): package libcairo2:amd64 1.15.2-0intel1 cannot be configured because libcairo2:i386 is at a different version (1.14.8-1) Processing triggers for libc-bin (2.24-9ubuntu2.2) ... Errors were encountered while processing: now where the heck i can find binary of appropriate version libcairo2:i386 1.15.2 (googling doesn't helps) > Hilaire > > Le 28/09/2017 Ã 19:51, Igor Stasenko a Ã©crit : > >> >> I got libsdl and libcairo 32bits installed fine on 64bits Ubuntu >> 17.04. >> >> weird.. >> > > -- > Dr. Geo > http://drgeo.eu > > -- Best regards, Igor Stasenko.

Sept. 29, 2017

Re: [Pharo-users] [Demo] Creating Bloc Widgets with Pharo

by Stephan Eggermont

On 29/09/17 00:51, Igor Stasenko wrote: > Stephan , you said you cannot replace the last one in the video. > I think you can have an easy solution: you should treat a pane that you > are currently over - the one you are going to replace, so if you drag > over something which is not placeholder, > then it should automatically be shifted and replaced by placeholder. Thanks. This works. I forgot that there is always one more dropping place possible than there are elements dragEvent: anEvent | dragOver | anEvent consumed: true. dragOver := inspector children first. inspector childrenDo: [ :c | c boundsInSpace center y < (anEvent position y + dragOffset y) ifTrue: [ dragOver := c ] ]. (dragOver ~= placeHolder ) ifTrue: [ (inspector childIndexOf: placeHolder) > 0 ifTrue: [inspector removeChild: placeHolder]. inspector children last boundsInSpace bottom < (anEvent position y + dragOffset y) ifTrue: [ inspector addChild: placeHolder at: (1+(inspector childIndexOf: dragOver))] ifFalse: [ inspector addChild: placeHolder at: (inspector childIndexOf: dragOver)]]. anEvent currentTarget position: (anEvent position - dragOffset).

Sept. 29, 2017

Re: [Pharo-users] [Demo] Creating Bloc Widgets with Pharo

by Ben Coman

On Fri, Sep 29, 2017 at 12:04 AM, Stephan Eggermont <stephan(a)stack.nl> wrote: > Bloc is ready for your experiments. Here is my first one. > Please let me know what and how to improve. > > Bloc allows for the creation of beautiful widgets. > Here is a panel containing collapsible subpanels > that can be reordered with drag-and-drop. > > https://vimeo.com/235934701 > > Stephan > Thanks Stephan. That provides a good insight into using Bloc. More encouragement to try it out myself. cheers -ben

Sept. 29, 2017

Re: [Pharo-users] X11 options on Ubuntu VM / Athens rendering problems

by Hilaire

Beside the official ones, are you using alternate repositories? It can become a hell. In your posting, a Thoera dependency appeared... Hilaire Le 28/09/2017 Ã 19:51, Igor Stasenko a Ã©critÂ : > > I got libsdl and libcairo 32bits installed fine on 64bits Ubuntu > 17.04. > > weird.. -- Dr. Geo http://drgeo.eu

Sept. 29, 2017

Re: [Pharo-users] [Demo] Creating Bloc Widgets with Pharo

by Igor Stasenko

Stephan , you said you cannot replace the last one in the video. I think you can have an easy solution: you should treat a pane that you are currently over - the one you are going to replace, so if you drag over something which is not placeholder, then it should automatically be shifted and replaced by placeholder. Cheers :) On 29 September 2017 at 00:56, stephan <stephan(a)stack.nl> wrote: > On 28-09-17 21:07, Stephane Ducasse wrote: > >> For example why a BlElement cannot get >> invisible and visible in addition to visibility: BlVisibility visible. >> > > It can, and if we do that systematically we end up with a BlElement with a > thousand methods. There are so many aspects that an element might need to > handle. Handling children, layout, styling, drawing, fonts, events, > visibility. Where should the border be? > > One thing I noted is that in Bloc we don't have a way to decide where to > add a dropped element in a parent that has a specified layout. In Morphic > that is also a responsibility of the layout. > > Stephan > > > > > > > -- Best regards, Igor Stasenko.

Sept. 28, 2017