Multi desktops inside Pharo!

> Julien Delplanque wrote:
>> I created a small utility that make possible to have multi desktops:
>> https://github.com/juliendelplanque/desktopsmanager.
> Your code works for me in Pharo 5, havent tried in Pharo 4.
>
> Unfortunately it does only work for Pharo "windows" but not general morphs.
> If you evaluate
>
>    ElipseMorph new openInWorld
>
> and hit CTRL+SHIFT+J you will see that the morph stays on the desktop.
> So your goodie is a "window switcher" and not a "desktop switcher".

>
> I guess it would be better if you would really switch the WorldMorph instance
> referenced by the global "World" variable.
>
> There already was a solutions once discussed/contributed with code here
>
>    http://forum.world.st/Multiple-Worlds-for-Pharo-stable-td3233552.html
>    http://seandenigris.com/blog/?p=767
>
> I think it got lost in the old bugtracker. Maybe Sean (who wrote it) can help here,
> update the code and merge with yours.

> Gesendet: Montag, 24. August 2015 um 19:46 Uhr
> Von: "Julien Delplanque" <[hidden email]>
> An: "Torsten Bergmann" <[hidden email]>, "Any question about pharo is welcome" <[hidden email]>, "Stéphane Ducasse" <[hidden email]>, "Marcus Denker" <[hidden email]>, [hidden email]
> Betreff: Re: Multi desktops inside Pharo!
>
>
>
> On 24/08/15 19:32, Torsten Bergmann wrote:
> > Julien Delplanque wrote:
> >> I created a small utility that make possible to have multi desktops:
> >> https://github.com/juliendelplanque/desktopsmanager.
> > Your code works for me in Pharo 5, havent tried in Pharo 4.
> >
> > Unfortunately it does only work for Pharo "windows" but not general morphs.
> > If you evaluate
> >
> >    ElipseMorph new openInWorld
> >
> > and hit CTRL+SHIFT+J you will see that the morph stays on the desktop.
> > So your goodie is a "window switcher" and not a "desktop switcher".
> Yes you are right. But it is a first step, I planned to really create
> "new desktops" in the future, but for now I wrote this fast to have
> something usable.
> >
> > I guess it would be better if you would really switch the WorldMorph instance
> > referenced by the global "World" variable.
> >
> > There already was a solutions once discussed/contributed with code here
> >
> >    http://forum.world.st/Multiple-Worlds-for-Pharo-stable-td3233552.html
> >    http://seandenigris.com/blog/?p=767
> >
> > I think it got lost in the old bugtracker. Maybe Sean (who wrote it) can help here,
> > update the code and merge with yours.
> Yes I'm OK to do that. Where can I find this package?
> >
> >
> > Ideally such a "Switch desktop" possibility would be part of the
> > standard Pharo 5 image including a small preview of the whole desktop
> > similar to what usual operating system window manager do and the possibility
> > to provide different backgrounds to the desktops.
> It would be really nice to have multiple world by default in pharo images :)
> >
> > Thanks
> > Torsten
> Julien
>
>

> Hi Julien,
>
> what I remember from history
>
>   - Jochen F. Rick had a "JRWorldManager" implemented back in 2010
>        - was discusssed here http://forum.world.st/Multiple-Worlds-was-Re-Can-I-use-Projects-in-Pharo-td2240869.html
>        - code is here http://forum.world.st/attachment/2242195/0/JRWorldManager.st (basically something to manage the desktops)
>   - then Sean picked up the idea in 2011 and implemented
>        - blog post http://seandenigris.com/blog/?p=767
>        - he provided "MultipleWorlds.2.cs" which I think is lost during bugtracker transition
>   - later default Pharo image was reworked for the world to have WorldMorph instances instead of Squeaks PasteUpMorph, so
>     the code of Sean and Jochen would be obsolete anyway
>
> Some tips:
> ==========
>   - Pharo has a global called "World" which is pointing to the current world of displayed morphs, you need to
>     switch this and handle/manage new Worlds = Desktops.
>   - in older Pharo versions and Squeak this was a PasteUpMorph, now it is an instance of class "WorldMorph"
>   - note that there is a class side method "installNewWorld" with the nice comment "let us play God."
>   - basically you already have the parts with a DeskopManager and the switch via keyboard, you just need
>     to play with #installNewWorld and #install method of the worlds
>     Note: check the comments of the class and methods in WorldMorph - this might be subject to change
>   - to get a thumbnail form of the world you can use:
>
>      |sizeFactor|
>      sizeFactor := 0.3.
>      World taskThumbnailOfSize: (Display width * sizeFactor) @ (Display height * sizeFactor)
>
>   - see how the preview is handled in TaskListMorph newPreviewMorph/updatePreview methods to get an idea
>
> So all the pieces of the puzzle are there - just connect them correctly.
>  
> Side Note: default Pharo image has the possibility to put an external picture somewhere that is used
>             by the theme as the background image. Cant remember where it is - just browser for "background..."
>             methods in the Finder. With multiple desktops I guess this needs some love as well to have
>             a backgorund per desktop.
>
> Hope that helps!
>
> Bye
> Torsten
>
>> Gesendet: Montag, 24. August 2015 um 19:46 Uhr
>> Von: "Julien Delplanque" <[hidden email]>
>> An: "Torsten Bergmann" <[hidden email]>, "Any question about pharo is welcome" <[hidden email]>, "Stéphane Ducasse" <[hidden email]>, "Marcus Denker" <[hidden email]>, [hidden email]
>> Betreff: Re: Multi desktops inside Pharo!
>>
>>
>>
>> On 24/08/15 19:32, Torsten Bergmann wrote:
>>> Julien Delplanque wrote:
>>>> I created a small utility that make possible to have multi desktops:
>>>> https://github.com/juliendelplanque/desktopsmanager.
>>> Your code works for me in Pharo 5, havent tried in Pharo 4.
>>>
>>> Unfortunately it does only work for Pharo "windows" but not general morphs.
>>> If you evaluate
>>>
>>>     ElipseMorph new openInWorld
>>>
>>> and hit CTRL+SHIFT+J you will see that the morph stays on the desktop.
>>> So your goodie is a "window switcher" and not a "desktop switcher".
>> Yes you are right. But it is a first step, I planned to really create
>> "new desktops" in the future, but for now I wrote this fast to have
>> something usable.
>>> I guess it would be better if you would really switch the WorldMorph instance
>>> referenced by the global "World" variable.
>>>
>>> There already was a solutions once discussed/contributed with code here
>>>
>>>     http://forum.world.st/Multiple-Worlds-for-Pharo-stable-td3233552.html
>>>     http://seandenigris.com/blog/?p=767
>>>
>>> I think it got lost in the old bugtracker. Maybe Sean (who wrote it) can help here,
>>> update the code and merge with yours.
>> Yes I'm OK to do that. Where can I find this package?
>>>
>>> Ideally such a "Switch desktop" possibility would be part of the
>>> standard Pharo 5 image including a small preview of the whole desktop
>>> similar to what usual operating system window manager do and the possibility
>>> to provide different backgrounds to the desktops.
>> It would be really nice to have multiple world by default in pharo images :)
>>> Thanks
>>> Torsten
>> Julien
>>
>>

> Gesendet: Montag, 24. August 2015 um 20:31 Uhr
> Von: "Julien Delplanque" <[hidden email]>
> An: "Torsten Bergmann" <[hidden email]>
> Cc: "Any question about pharo is welcome" <[hidden email]>, "Stéphane Ducasse" <[hidden email]>, "Marcus Denker" <[hidden email]>, [hidden email]
> Betreff: Re: Multi desktops inside Pharo!
>
> Thanks a lot for all these tips :)
>
> I will update the project to match with what is really expected from a
> multi world utility.
>
> Thanks again for the time you take to explain me this.
>
> Regards,
> Julien
>
> On 24/08/15 20:24, Torsten Bergmann wrote:
> > Hi Julien,
> >
> > what I remember from history
> >
> >   - Jochen F. Rick had a "JRWorldManager" implemented back in 2010
> >        - was discusssed here http://forum.world.st/Multiple-Worlds-was-Re-Can-I-use-Projects-in-Pharo-td2240869.html
> >        - code is here http://forum.world.st/attachment/2242195/0/JRWorldManager.st (basically something to manage the desktops)
> >   - then Sean picked up the idea in 2011 and implemented
> >        - blog post http://seandenigris.com/blog/?p=767
> >        - he provided "MultipleWorlds.2.cs" which I think is lost during bugtracker transition
> >   - later default Pharo image was reworked for the world to have WorldMorph instances instead of Squeaks PasteUpMorph, so
> >     the code of Sean and Jochen would be obsolete anyway
> >
> > Some tips:
> > ==========
> >   - Pharo has a global called "World" which is pointing to the current world of displayed morphs, you need to
> >     switch this and handle/manage new Worlds = Desktops.
> >   - in older Pharo versions and Squeak this was a PasteUpMorph, now it is an instance of class "WorldMorph"
> >   - note that there is a class side method "installNewWorld" with the nice comment "let us play God."
> >   - basically you already have the parts with a DeskopManager and the switch via keyboard, you just need
> >     to play with #installNewWorld and #install method of the worlds
> >     Note: check the comments of the class and methods in WorldMorph - this might be subject to change
> >   - to get a thumbnail form of the world you can use:
> >
> >      |sizeFactor|
> >      sizeFactor := 0.3.
> >      World taskThumbnailOfSize: (Display width * sizeFactor) @ (Display height * sizeFactor)
> >
> >   - see how the preview is handled in TaskListMorph newPreviewMorph/updatePreview methods to get an idea
> >
> > So all the pieces of the puzzle are there - just connect them correctly.
> >  
> > Side Note: default Pharo image has the possibility to put an external picture somewhere that is used
> >             by the theme as the background image. Cant remember where it is - just browser for "background..."
> >             methods in the Finder. With multiple desktops I guess this needs some love as well to have
> >             a backgorund per desktop.
> >
> > Hope that helps!
> >
> > Bye
> > Torsten
> >
> >> Gesendet: Montag, 24. August 2015 um 19:46 Uhr
> >> Von: "Julien Delplanque" <[hidden email]>
> >> An: "Torsten Bergmann" <[hidden email]>, "Any question about pharo is welcome" <[hidden email]>, "Stéphane Ducasse" <[hidden email]>, "Marcus Denker" <[hidden email]>, [hidden email]
> >> Betreff: Re: Multi desktops inside Pharo!
> >>
> >>
> >>
> >> On 24/08/15 19:32, Torsten Bergmann wrote:
> >>> Julien Delplanque wrote:
> >>>> I created a small utility that make possible to have multi desktops:
> >>>> https://github.com/juliendelplanque/desktopsmanager.
> >>> Your code works for me in Pharo 5, havent tried in Pharo 4.
> >>>
> >>> Unfortunately it does only work for Pharo "windows" but not general morphs.
> >>> If you evaluate
> >>>
> >>>     ElipseMorph new openInWorld
> >>>
> >>> and hit CTRL+SHIFT+J you will see that the morph stays on the desktop.
> >>> So your goodie is a "window switcher" and not a "desktop switcher".
> >> Yes you are right. But it is a first step, I planned to really create
> >> "new desktops" in the future, but for now I wrote this fast to have
> >> something usable.
> >>> I guess it would be better if you would really switch the WorldMorph instance
> >>> referenced by the global "World" variable.
> >>>
> >>> There already was a solutions once discussed/contributed with code here
> >>>
> >>>     http://forum.world.st/Multiple-Worlds-for-Pharo-stable-td3233552.html
> >>>     http://seandenigris.com/blog/?p=767
> >>>
> >>> I think it got lost in the old bugtracker. Maybe Sean (who wrote it) can help here,
> >>> update the code and merge with yours.
> >> Yes I'm OK to do that. Where can I find this package?
> >>>
> >>> Ideally such a "Switch desktop" possibility would be part of the
> >>> standard Pharo 5 image including a small preview of the whole desktop
> >>> similar to what usual operating system window manager do and the possibility
> >>> to provide different backgrounds to the desktops.
> >> It would be really nice to have multiple world by default in pharo images :)
> >>> Thanks
> >>> Torsten
> >> Julien
> >>
> >>
>
>

> Hi Julien,
>
> try
>
>   WorldMorph installNewWorld.
>
> which will create a new world. Open a workspace and check that it is there.
>
>   WorldMorph allInstances
>
> If you click in the inspector you will see a morph representation of it - so you
> see which one is which.
>
> Now you have two instances of WorldMorph in your system. One is always connected
> to the global variable
>
>    World
>
> You can switch as experiment by either:
>
>     WorldMorph allInstances first install.
>     Display restore
>
> or
>
>     WorldMorph allInstances last install.
>     Display restore
>
> The restore is necessary to update the drawing.
>
> I think you get the idea from this. As I said - the pieces are there, someone
> has to connect them.

> You dont have to thank me - it is good that you brought this into attention again
> and if you could devote some time in helping to bring such a nice feature also (back)
> to Pharo again.
>
> In case of questions do not hesitate to ask on this list or the pharo-dev list.
>
> Thanks
> T.
>
>> Gesendet: Montag, 24. August 2015 um 20:31 Uhr
>> Von: "Julien Delplanque" <[hidden email]>
>> An: "Torsten Bergmann" <[hidden email]>
>> Cc: "Any question about pharo is welcome" <[hidden email]>, "Stéphane Ducasse" <[hidden email]>, "Marcus Denker" <[hidden email]>, [hidden email]
>> Betreff: Re: Multi desktops inside Pharo!
>>
>> Thanks a lot for all these tips :)
>>
>> I will update the project to match with what is really expected from a
>> multi world utility.
>>
>> Thanks again for the time you take to explain me this.
>>
>> Regards,
>> Julien
>>
>> On 24/08/15 20:24, Torsten Bergmann wrote:
>>> Hi Julien,
>>>
>>> what I remember from history
>>>
>>>    - Jochen F. Rick had a "JRWorldManager" implemented back in 2010
>>>         - was discusssed here http://forum.world.st/Multiple-Worlds-was-Re-Can-I-use-Projects-in-Pharo-td2240869.html
>>>         - code is here http://forum.world.st/attachment/2242195/0/JRWorldManager.st (basically something to manage the desktops)
>>>    - then Sean picked up the idea in 2011 and implemented
>>>         - blog post http://seandenigris.com/blog/?p=767
>>>         - he provided "MultipleWorlds.2.cs" which I think is lost during bugtracker transition
>>>    - later default Pharo image was reworked for the world to have WorldMorph instances instead of Squeaks PasteUpMorph, so
>>>      the code of Sean and Jochen would be obsolete anyway
>>>
>>> Some tips:
>>> ==========
>>>    - Pharo has a global called "World" which is pointing to the current world of displayed morphs, you need to
>>>      switch this and handle/manage new Worlds = Desktops.
>>>    - in older Pharo versions and Squeak this was a PasteUpMorph, now it is an instance of class "WorldMorph"
>>>    - note that there is a class side method "installNewWorld" with the nice comment "let us play God."
>>>    - basically you already have the parts with a DeskopManager and the switch via keyboard, you just need
>>>      to play with #installNewWorld and #install method of the worlds
>>>      Note: check the comments of the class and methods in WorldMorph - this might be subject to change
>>>    - to get a thumbnail form of the world you can use:
>>>
>>>       |sizeFactor|
>>>       sizeFactor := 0.3.
>>>       World taskThumbnailOfSize: (Display width * sizeFactor) @ (Display height * sizeFactor)
>>>
>>>    - see how the preview is handled in TaskListMorph newPreviewMorph/updatePreview methods to get an idea
>>>
>>> So all the pieces of the puzzle are there - just connect them correctly.
>>>    
>>> Side Note: default Pharo image has the possibility to put an external picture somewhere that is used
>>>              by the theme as the background image. Cant remember where it is - just browser for "background..."
>>>              methods in the Finder. With multiple desktops I guess this needs some love as well to have
>>>              a backgorund per desktop.
>>>
>>> Hope that helps!
>>>
>>> Bye
>>> Torsten
>>>
>>>> Gesendet: Montag, 24. August 2015 um 19:46 Uhr
>>>> Von: "Julien Delplanque" <[hidden email]>
>>>> An: "Torsten Bergmann" <[hidden email]>, "Any question about pharo is welcome" <[hidden email]>, "Stéphane Ducasse" <[hidden email]>, "Marcus Denker" <[hidden email]>, [hidden email]
>>>> Betreff: Re: Multi desktops inside Pharo!
>>>>
>>>>
>>>>
>>>> On 24/08/15 19:32, Torsten Bergmann wrote:
>>>>> Julien Delplanque wrote:
>>>>>> I created a small utility that make possible to have multi desktops:
>>>>>> https://github.com/juliendelplanque/desktopsmanager.
>>>>> Your code works for me in Pharo 5, havent tried in Pharo 4.
>>>>>
>>>>> Unfortunately it does only work for Pharo "windows" but not general morphs.
>>>>> If you evaluate
>>>>>
>>>>>      ElipseMorph new openInWorld
>>>>>
>>>>> and hit CTRL+SHIFT+J you will see that the morph stays on the desktop.
>>>>> So your goodie is a "window switcher" and not a "desktop switcher".
>>>> Yes you are right. But it is a first step, I planned to really create
>>>> "new desktops" in the future, but for now I wrote this fast to have
>>>> something usable.
>>>>> I guess it would be better if you would really switch the WorldMorph instance
>>>>> referenced by the global "World" variable.
>>>>>
>>>>> There already was a solutions once discussed/contributed with code here
>>>>>
>>>>>      http://forum.world.st/Multiple-Worlds-for-Pharo-stable-td3233552.html
>>>>>      http://seandenigris.com/blog/?p=767
>>>>>
>>>>> I think it got lost in the old bugtracker. Maybe Sean (who wrote it) can help here,
>>>>> update the code and merge with yours.
>>>> Yes I'm OK to do that. Where can I find this package?
>>>>> Ideally such a "Switch desktop" possibility would be part of the
>>>>> standard Pharo 5 image including a small preview of the whole desktop
>>>>> similar to what usual operating system window manager do and the possibility
>>>>> to provide different backgrounds to the desktops.
>>>> It would be really nice to have multiple world by default in pharo images :)
>>>>> Thanks
>>>>> Torsten
>>>> Julien
>>>>
>>>>
>>

>
> On 24/08/15 20:41, Torsten Bergmann wrote:
>> Hi Julien,
>>
>> try
>>
>>   WorldMorph installNewWorld.
>>
>> which will create a new world. Open a workspace and check that it is
>> there.
>>
>>   WorldMorph allInstances
>>
>> If you click in the inspector you will see a morph representation of it -
>> so you
>> see which one is which.
>>
>> Now you have two instances of WorldMorph in your system. One is always
>> connected
>> to the global variable
>>
>>    World
>>
>> You can switch as experiment by either:
>>
>>     WorldMorph allInstances first install.
>>     Display restore
>>
>> or
>>
>>     WorldMorph allInstances last install.
>>     Display restore
>>
>> The restore is necessary to update the drawing.
>>
>> I think you get the idea from this. As I said - the pieces are there,
>> someone
>> has to connect them.
> Yes, I am exploring messages to see how to do it. I'll probably give a
> try tonight.
>
> Thanks for these code snippets anyway :)
>> You dont have to thank me - it is good that you brought this into
>> attention again
>> and if you could devote some time in helping to bring such a nice feature
>> also (back)
>> to Pharo again.
>>
>> In case of questions do not hesitate to ask on this list or the pharo-dev
>> list.
>>
>> Thanks
>> T.
>>
>>> Gesendet: Montag, 24. August 2015 um 20:31 Uhr
>>> Von: "Julien Delplanque" <[hidden email]>
>>> An: "Torsten Bergmann" <[hidden email]>
>>> Cc: "Any question about pharo is welcome" <[hidden email]>,
>>> "Stéphane Ducasse" <[hidden email]>, "Marcus Denker"
>>> <[hidden email]>, [hidden email]
>>> Betreff: Re: Multi desktops inside Pharo!
>>>
>>> Thanks a lot for all these tips :)
>>>
>>> I will update the project to match with what is really expected from a
>>> multi world utility.
>>>
>>> Thanks again for the time you take to explain me this.
>>>
>>> Regards,
>>> Julien
>>>
>>> On 24/08/15 20:24, Torsten Bergmann wrote:
>>>> Hi Julien,
>>>>
>>>> what I remember from history
>>>>
>>>>    - Jochen F. Rick had a "JRWorldManager" implemented back in 2010
>>>>         - was discusssed here
>>>> http://forum.world.st/Multiple-Worlds-was-Re-Can-I-use-Projects-in-Pharo-td2240869.html
>>>>         - code is here
>>>> http://forum.world.st/attachment/2242195/0/JRWorldManager.st (basically
>>>> something to manage the desktops)
>>>>    - then Sean picked up the idea in 2011 and implemented
>>>>         - blog post http://seandenigris.com/blog/?p=767
>>>>         - he provided "MultipleWorlds.2.cs" which I think is lost during
>>>> bugtracker transition
>>>>    - later default Pharo image was reworked for the world to have
>>>> WorldMorph instances instead of Squeaks PasteUpMorph, so
>>>>      the code of Sean and Jochen would be obsolete anyway
>>>>
>>>> Some tips:
>>>> ==========
>>>>    - Pharo has a global called "World" which is pointing to the current
>>>> world of displayed morphs, you need to
>>>>      switch this and handle/manage new Worlds = Desktops.
>>>>    - in older Pharo versions and Squeak this was a PasteUpMorph, now it
>>>> is an instance of class "WorldMorph"
>>>>    - note that there is a class side method "installNewWorld" with the
>>>> nice comment "let us play God."
>>>>    - basically you already have the parts with a DeskopManager and the
>>>> switch via keyboard, you just need
>>>>      to play with #installNewWorld and #install method of the worlds
>>>>      Note: check the comments of the class and methods in WorldMorph -
>>>> this might be subject to change
>>>>    - to get a thumbnail form of the world you can use:
>>>>
>>>>       |sizeFactor|
>>>>       sizeFactor := 0.3.
>>>>       World taskThumbnailOfSize: (Display width * sizeFactor) @ (Display
>>>> height * sizeFactor)
>>>>
>>>>    - see how the preview is handled in TaskListMorph
>>>> newPreviewMorph/updatePreview methods to get an idea
>>>>
>>>> So all the pieces of the puzzle are there - just connect them
>>>> correctly.
>>>>
>>>> Side Note: default Pharo image has the possibility to put an external
>>>> picture somewhere that is used
>>>>              by the theme as the background image. Cant remember where
>>>> it is - just browser for "background..."
>>>>              methods in the Finder. With multiple desktops I guess this
>>>> needs some love as well to have
>>>>              a backgorund per desktop.
>>>>
>>>> Hope that helps!
>>>>
>>>> Bye
>>>> Torsten
>>>>
>>>>> Gesendet: Montag, 24. August 2015 um 19:46 Uhr
>>>>> Von: "Julien Delplanque" <[hidden email]>
>>>>> An: "Torsten Bergmann" <[hidden email]>, "Any question about pharo is
>>>>> welcome" <[hidden email]>, "Stéphane Ducasse"
>>>>> <[hidden email]>, "Marcus Denker" <[hidden email]>,
>>>>> [hidden email]
>>>>> Betreff: Re: Multi desktops inside Pharo!
>>>>>
>>>>>
>>>>>
>>>>> On 24/08/15 19:32, Torsten Bergmann wrote:
>>>>>> Julien Delplanque wrote:
>>>>>>> I created a small utility that make possible to have multi desktops:
>>>>>>> https://github.com/juliendelplanque/desktopsmanager.
>>>>>> Your code works for me in Pharo 5, havent tried in Pharo 4.
>>>>>>
>>>>>> Unfortunately it does only work for Pharo "windows" but not general
>>>>>> morphs.
>>>>>> If you evaluate
>>>>>>
>>>>>>      ElipseMorph new openInWorld
>>>>>>
>>>>>> and hit CTRL+SHIFT+J you will see that the morph stays on the
>>>>>> desktop.
>>>>>> So your goodie is a "window switcher" and not a "desktop switcher".
>>>>> Yes you are right. But it is a first step, I planned to really create
>>>>> "new desktops" in the future, but for now I wrote this fast to have
>>>>> something usable.
>>>>>> I guess it would be better if you would really switch the WorldMorph
>>>>>> instance
>>>>>> referenced by the global "World" variable.
>>>>>>
>>>>>> There already was a solutions once discussed/contributed with code
>>>>>> here
>>>>>>
>>>>>>
>>>>>> http://forum.world.st/Multiple-Worlds-for-Pharo-stable-td3233552.html
>>>>>>      http://seandenigris.com/blog/?p=767
>>>>>>
>>>>>> I think it got lost in the old bugtracker. Maybe Sean (who wrote it)
>>>>>> can help here,
>>>>>> update the code and merge with yours.
>>>>> Yes I'm OK to do that. Where can I find this package?
>>>>>> Ideally such a "Switch desktop" possibility would be part of the
>>>>>> standard Pharo 5 image including a small preview of the whole desktop
>>>>>> similar to what usual operating system window manager do and the
>>>>>> possibility
>>>>>> to provide different backgrounds to the desktops.
>>>>> It would be really nice to have multiple world by default in pharo
>>>>> images :)
>>>>>> Thanks
>>>>>> Torsten
>>>>> Julien
>>>>>
>>>>>
>>>
>
>
>

> FWIW, the TilingWindowManager has some support for this.
>
> Not sure how it behaves in 4.x|5.x
>
> Sean did some fixes IIRC.
>
> Phil
>
> On Mon, Aug 24, 2015 at 9:00 PM, Julien Delplanque <[hidden email]>
> wrote:
>
>>
>> On 24/08/15 20:41, Torsten Bergmann wrote:
>>
>>> Hi Julien,
>>>
>>> try
>>>
>>>   WorldMorph installNewWorld.
>>>
>>> which will create a new world. Open a workspace and check that it is
>>> there.
>>>
>>>   WorldMorph allInstances
>>>
>>> If you click in the inspector you will see a morph representation of it
>>> -
>>> so you
>>> see which one is which.
>>>
>>> Now you have two instances of WorldMorph in your system. One is always
>>> connected
>>> to the global variable
>>>
>>>    World
>>>
>>> You can switch as experiment by either:
>>>
>>>     WorldMorph allInstances first install.
>>>     Display restore
>>>
>>> or
>>>
>>>     WorldMorph allInstances last install.
>>>     Display restore
>>>
>>> The restore is necessary to update the drawing.
>>>
>>> I think you get the idea from this. As I said - the pieces are there,
>>> someone
>>> has to connect them.
>>>
>> Yes, I am exploring messages to see how to do it. I'll probably give a
>> try
>> tonight.
>>
>> Thanks for these code snippets anyway :)
>>
>>> You dont have to thank me - it is good that you brought this into
>>> attention again
>>> and if you could devote some time in helping to bring such a nice
>>> feature
>>> also (back)
>>> to Pharo again.
>>>
>>> In case of questions do not hesitate to ask on this list or the
>>> pharo-dev
>>> list.
>>>
>>> Thanks
>>> T.
>>>
>>> Gesendet: Montag, 24. August 2015 um 20:31 Uhr
>>>> Von: "Julien Delplanque" <[hidden email]>
>>>> An: "Torsten Bergmann" <[hidden email]>
>>>> Cc: "Any question about pharo is welcome"
>>>> <[hidden email]>,
>>>> "Stéphane Ducasse" <[hidden email]>, "Marcus Denker" <
>>>> [hidden email]>, [hidden email]
>>>> Betreff: Re: Multi desktops inside Pharo!
>>>>
>>>> Thanks a lot for all these tips :)
>>>>
>>>> I will update the project to match with what is really expected from a
>>>> multi world utility.
>>>>
>>>> Thanks again for the time you take to explain me this.
>>>>
>>>> Regards,
>>>> Julien
>>>>
>>>> On 24/08/15 20:24, Torsten Bergmann wrote:
>>>>
>>>>> Hi Julien,
>>>>>
>>>>> what I remember from history
>>>>>
>>>>>    - Jochen F. Rick had a "JRWorldManager" implemented back in 2010
>>>>>         - was discusssed here
>>>>> http://forum.world.st/Multiple-Worlds-was-Re-Can-I-use-Projects-in-Pharo-td2240869.html
>>>>>         - code is here
>>>>> http://forum.world.st/attachment/2242195/0/JRWorldManager.st
>>>>> (basically something to manage the desktops)
>>>>>    - then Sean picked up the idea in 2011 and implemented
>>>>>         - blog post http://seandenigris.com/blog/?p=767
>>>>>         - he provided "MultipleWorlds.2.cs" which I think is lost
>>>>> during bugtracker transition
>>>>>    - later default Pharo image was reworked for the world to have
>>>>> WorldMorph instances instead of Squeaks PasteUpMorph, so
>>>>>      the code of Sean and Jochen would be obsolete anyway
>>>>>
>>>>> Some tips:
>>>>> ==========
>>>>>    - Pharo has a global called "World" which is pointing to the
>>>>> current
>>>>> world of displayed morphs, you need to
>>>>>      switch this and handle/manage new Worlds = Desktops.
>>>>>    - in older Pharo versions and Squeak this was a PasteUpMorph, now
>>>>> it
>>>>> is an instance of class "WorldMorph"
>>>>>    - note that there is a class side method "installNewWorld" with the
>>>>> nice comment "let us play God."
>>>>>    - basically you already have the parts with a DeskopManager and the
>>>>> switch via keyboard, you just need
>>>>>      to play with #installNewWorld and #install method of the worlds
>>>>>      Note: check the comments of the class and methods in WorldMorph -
>>>>> this might be subject to change
>>>>>    - to get a thumbnail form of the world you can use:
>>>>>
>>>>>       |sizeFactor|
>>>>>       sizeFactor := 0.3.
>>>>>       World taskThumbnailOfSize: (Display width * sizeFactor) @
>>>>> (Display height * sizeFactor)
>>>>>
>>>>>    - see how the preview is handled in TaskListMorph
>>>>> newPreviewMorph/updatePreview methods to get an idea
>>>>>
>>>>> So all the pieces of the puzzle are there - just connect them
>>>>> correctly.
>>>>>    Side Note: default Pharo image has the possibility to put an
>>>>> external picture somewhere that is used
>>>>>              by the theme as the background image. Cant remember where
>>>>> it is - just browser for "background..."
>>>>>              methods in the Finder. With multiple desktops I guess
>>>>> this
>>>>> needs some love as well to have
>>>>>              a backgorund per desktop.
>>>>>
>>>>> Hope that helps!
>>>>>
>>>>> Bye
>>>>> Torsten
>>>>>
>>>>> Gesendet: Montag, 24. August 2015 um 19:46 Uhr
>>>>>> Von: "Julien Delplanque" <[hidden email]>
>>>>>> An: "Torsten Bergmann" <[hidden email]>, "Any question about pharo is
>>>>>> welcome" <[hidden email]>, "Stéphane Ducasse" <
>>>>>> [hidden email]>, "Marcus Denker" <[hidden email]>,
>>>>>> [hidden email]
>>>>>> Betreff: Re: Multi desktops inside Pharo!
>>>>>>
>>>>>>
>>>>>>
>>>>>> On 24/08/15 19:32, Torsten Bergmann wrote:
>>>>>>
>>>>>>> Julien Delplanque wrote:
>>>>>>>
>>>>>>>> I created a small utility that make possible to have multi
>>>>>>>> desktops:
>>>>>>>> https://github.com/juliendelplanque/desktopsmanager.
>>>>>>>>
>>>>>>> Your code works for me in Pharo 5, havent tried in Pharo 4.
>>>>>>>
>>>>>>> Unfortunately it does only work for Pharo "windows" but not general
>>>>>>> morphs.
>>>>>>> If you evaluate
>>>>>>>
>>>>>>>      ElipseMorph new openInWorld
>>>>>>>
>>>>>>> and hit CTRL+SHIFT+J you will see that the morph stays on the
>>>>>>> desktop.
>>>>>>> So your goodie is a "window switcher" and not a "desktop switcher".
>>>>>>>
>>>>>> Yes you are right. But it is a first step, I planned to really create
>>>>>> "new desktops" in the future, but for now I wrote this fast to have
>>>>>> something usable.
>>>>>>
>>>>>>> I guess it would be better if you would really switch the WorldMorph
>>>>>>> instance
>>>>>>> referenced by the global "World" variable.
>>>>>>>
>>>>>>> There already was a solutions once discussed/contributed with code
>>>>>>> here
>>>>>>>
>>>>>>>
>>>>>>> http://forum.world.st/Multiple-Worlds-for-Pharo-stable-td3233552.html
>>>>>>>      http://seandenigris.com/blog/?p=767
>>>>>>>
>>>>>>> I think it got lost in the old bugtracker. Maybe Sean (who wrote it)
>>>>>>> can help here,
>>>>>>> update the code and merge with yours.
>>>>>>>
>>>>>> Yes I'm OK to do that. Where can I find this package?
>>>>>>
>>>>>>> Ideally such a "Switch desktop" possibility would be part of the
>>>>>>> standard Pharo 5 image including a small preview of the whole
>>>>>>> desktop
>>>>>>> similar to what usual operating system window manager do and the
>>>>>>> possibility
>>>>>>> to provide different backgrounds to the desktops.
>>>>>>>
>>>>>> It would be really nice to have multiple world by default in pharo
>>>>>> images :)
>>>>>>
>>>>>>> Thanks
>>>>>>> Torsten
>>>>>>>
>>>>>> Julien
>>>>>>
>>>>>>
>>>>>>
>>>>
>>
>>
>>
>