Re: [Pharo-users] Embedded PDF viewer?

[Ben Coman]

On 14 November 2017 at 00:18, Sean P. DeNigris  wrote:
> Ben Coman wrote
>> I've wanted PDF rendering inside Pharo for *years* and finally got a
>> sniff of a solid possibility - so I'm chasing it down.  It might not pan
>> out like I imagine, but "Live programming PDF documents" seems like a
>> catchy meme that the broader community may find intriguing.
>
> Go, go, go!!
>
>
>
> -
> Cheers,
> Sean

I've been distracted from this to play around with Bittrex trading.
In case someone feels inclined to take up the reins, I've blogged
about where I got up to.

Pharo PDF Rendering, part 1, building PDFium
http://blog.openinworld.com/2017/11/pharo-pdf-part-1/

Pharo PDF Rendering, part 2, UFFI interfacing PDFium
http://blog.openinworld.com/2018/02/pharo-pdf-part-2/

cheers -ben

Re: [Pharo-users] From Roassal RTView to html

[Andrei Stebakov]

Now it takes me to the right page, thanks!
One small glitch though, looks like after mouse click the UI element gets
grabbed by the mouse as if I pressed "click and hold".
So the only way to dis-engage the mouse from the element is to refresh the
html page.

On Mon, Feb 5, 2018 at 3:21 PM, milton mamani  wrote:

> Could you please use this script
>
> Gofer it
> smalltalkhubUser: 'ObjectProfile' project: 'Roassal2';
> package: 'Roassal2';
> package: 'Roassal2GT';
> package: 'Trachel';
> load.
>
> 2018-02-05 17:12 GMT-03:00 Andrei Stebakov :
>
>> Updated roassal via:
>> Gofer new smalltalkhubUser: 'ObjectProfile'
>> project: 'Roassal';
>> package: 'ConfigurationOfRoassal';
>> load.
>> (Smalltalk at: #ConfigurationOfRoassal) load
>>
>> The problems is still the same: added ".html" suffix.
>>
>> On Mon, Feb 5, 2018 at 3:09 PM, Alexandre Bergel > > wrote:
>>
>>> Andrei, let us know how it goes
>>>
>>> Cheers
>>> Alexandre
>>>
>>> Envoyé de mon iPad
>>>
>>> Le 5 févr. 2018 à 16:51, milton mamani  a écrit :
>>>
>>> Your need to load the last version of roassal, I change it that
>>>
>>> 2018-02-05 16:44 GMT-03:00 Andrei Stebakov :
>>>
 Milton, thanks for the example.
 I wonder why the link it takes me to has an appended ".html" at the end
 like "https://twitter.com.html;?

 On Mon, Feb 5, 2018 at 12:55 PM, milton mamani 
 wrote:

> Hi Andrei,
>
> This is some example.
>
> Let me know if this is what you want.
>
> Run this in a playground with the last version of roassal:
>
>
> .=..=..=..=..=..=..=..=..=..=..=..=..=..=..=..=..=..=..=..=..=..=..=.
> .=..=..=..=..=..=..=..=..=.
>
> b := RTMondrian new.
> b shape text color: [Color random].
> b nodes: { 'https://facebook.com'. 'https://twitter.com'. '
> https://plus.google.com' }.
> b build.
> link := RTLinkView new
> name: [ :model | model ] "#yourself";
> view: nil.
> b view elements @ link.
>
> RTHTML5Exporter new
> fileName: 'roassalfile.html';
> export: b view.
> b view
>
> .=..=..=..=..=..=..=..=..=..=..=..=..=..=..=..=..=..=..=..=..=..=..=.
> .=..=..=..=..=..=..=..=..=.
>
> Best regards,
> Milton
>
>
>
>
>
> 2018-02-05 14:16 GMT-03:00 Andrei Stebakov :
>
>> I'll try to find if there is a way to embed a clickable interaction.
>> Looks like since there is no response to the topic, I was wondering
>> if it's a non-pharo/roassal way to do it or it's just not so many people
>> tried it.
>>
>> On Sat, Feb 3, 2018 at 5:42 AM, Alexandre Bergel <
>> alexandre.ber...@me.com> wrote:
>>
>>> Hi Milton,
>>>
>>> Can you answer to Andrei please?
>>> I know in Roassal there is a way to embed clickable interaction.
>>>
>>> Cheers,
>>> Alexandre
>>>
>>> Begin forwarded message:
>>>
>>> *From: *Andrei Stebakov 
>>> *Subject: **[Pharo-users] From Roassal RTView to html*
>>> *Date: *February 2, 2018 at 1:53:50 PM GMT-3
>>> *To: *Any question about pharo is welcome <
>>> pharo-users@lists.pharo.org>
>>> *Reply-To: *Any question about pharo is welcome <
>>> pharo-users@lists.pharo.org>
>>>
>>> I was wondering if it's a good idea to expose some of the Roassal
>>> models via web (say Seaside) using the ability of Roassal to generate 
>>> HTML
>>> for the view.
>>> In this case how could I "spice up" the HTML making for example
>>> those ellipces or lablels clickabe so the click could take me to some 
>>> web
>>> page bases on the data in the model?
>>>
>>>
>>>
>>
>

>>>
>>
>

Re: [Pharo-users] From Roassal RTView to html

[Andrei Stebakov]

Updated roassal via:
Gofer new smalltalkhubUser: 'ObjectProfile'
project: 'Roassal';
package: 'ConfigurationOfRoassal';
load.
(Smalltalk at: #ConfigurationOfRoassal) load

The problems is still the same: added ".html" suffix.

On Mon, Feb 5, 2018 at 3:09 PM, Alexandre Bergel 
wrote:

> Andrei, let us know how it goes
>
> Cheers
> Alexandre
>
> Envoyé de mon iPad
>
> Le 5 févr. 2018 à 16:51, milton mamani  a écrit :
>
> Your need to load the last version of roassal, I change it that
>
> 2018-02-05 16:44 GMT-03:00 Andrei Stebakov :
>
>> Milton, thanks for the example.
>> I wonder why the link it takes me to has an appended ".html" at the end
>> like "https://twitter.com.html;?
>>
>> On Mon, Feb 5, 2018 at 12:55 PM, milton mamani 
>> wrote:
>>
>>> Hi Andrei,
>>>
>>> This is some example.
>>>
>>> Let me know if this is what you want.
>>>
>>> Run this in a playground with the last version of roassal:
>>>
>>>
>>> .=..=..=..=..=..=..=..=..=..=..=..=..=..=..=..=..=..=..=..=..=..=..=..=.
>>> .=..=..=..=..=..=..=..=.
>>>
>>> b := RTMondrian new.
>>> b shape text color: [Color random].
>>> b nodes: { 'https://facebook.com'. 'https://twitter.com'. '
>>> https://plus.google.com' }.
>>> b build.
>>> link := RTLinkView new
>>> name: [ :model | model ] "#yourself";
>>> view: nil.
>>> b view elements @ link.
>>>
>>> RTHTML5Exporter new
>>> fileName: 'roassalfile.html';
>>> export: b view.
>>> b view
>>>
>>> .=..=..=..=..=..=..=..=..=..=..=..=..=..=..=..=..=..=..=..=..=..=..=..=.
>>> .=..=..=..=..=..=..=..=.
>>>
>>> Best regards,
>>> Milton
>>>
>>>
>>>
>>>
>>>
>>> 2018-02-05 14:16 GMT-03:00 Andrei Stebakov :
>>>
 I'll try to find if there is a way to embed a clickable interaction.
 Looks like since there is no response to the topic, I was wondering if
 it's a non-pharo/roassal way to do it or it's just not so many people tried
 it.

 On Sat, Feb 3, 2018 at 5:42 AM, Alexandre Bergel <
 alexandre.ber...@me.com> wrote:

> Hi Milton,
>
> Can you answer to Andrei please?
> I know in Roassal there is a way to embed clickable interaction.
>
> Cheers,
> Alexandre
>
> Begin forwarded message:
>
> *From: *Andrei Stebakov 
> *Subject: **[Pharo-users] From Roassal RTView to html*
> *Date: *February 2, 2018 at 1:53:50 PM GMT-3
> *To: *Any question about pharo is welcome  >
> *Reply-To: *Any question about pharo is welcome <
> pharo-users@lists.pharo.org>
>
> I was wondering if it's a good idea to expose some of the Roassal
> models via web (say Seaside) using the ability of Roassal to generate HTML
> for the view.
> In this case how could I "spice up" the HTML making for example those
> ellipces or lablels clickabe so the click could take me to some web page
> bases on the data in the model?
>
>
>

>>>
>>
>

Re: [Pharo-users] From Roassal RTView to html

[Alexandre Bergel]

Andrei, let us know how it goes

Cheers
Alexandre 

Envoyé de mon iPad

> Le 5 févr. 2018 à 16:51, milton mamani  a écrit :
> 
> Your need to load the last version of roassal, I change it that
> 
> 2018-02-05 16:44 GMT-03:00 Andrei Stebakov :
>> Milton, thanks for the example.
>> I wonder why the link it takes me to has an appended ".html" at the end like 
>> "https://twitter.com.html;?
>> 
>>> On Mon, Feb 5, 2018 at 12:55 PM, milton mamani  wrote:
>>> Hi Andrei,
>>> 
>>> This is some example.
>>> 
>>> Let me know if this is what you want.
>>> 
>>> Run this in a playground with the last version of roassal:
>>> 
>>> 
>>> .=..=..=..=..=..=..=..=..=..=..=..=..=..=..=..=..=..=..=..=..=..=..=..=..=..=..=..=..=..=..=..=.
>>> 
>>> b := RTMondrian new.
>>> b shape text color: [Color random].
>>> b nodes: { 'https://facebook.com'. 'https://twitter.com'. 
>>> 'https://plus.google.com' }.
>>> b build.
>>> link := RTLinkView new 
>>> name: [ :model | model ] "#yourself";
>>> view: nil.
>>> b view elements @ link.
>>> 
>>> RTHTML5Exporter new
>>> fileName: 'roassalfile.html';
>>> export: b view.
>>> b view
>>> 
>>> .=..=..=..=..=..=..=..=..=..=..=..=..=..=..=..=..=..=..=..=..=..=..=..=..=..=..=..=..=..=..=..=.
>>> 
>>> Best regards,
>>> Milton
>>> 
>>> 
>>> 
>>> 
>>> 
>>> 2018-02-05 14:16 GMT-03:00 Andrei Stebakov :
 I'll try to find if there is a way to embed a clickable interaction. 
 Looks like since there is no response to the topic, I was wondering if 
 it's a non-pharo/roassal way to do it or it's just not so many people 
 tried it.
 
> On Sat, Feb 3, 2018 at 5:42 AM, Alexandre Bergel 
>  wrote:
> Hi Milton,
> 
> Can you answer to Andrei please?
> I know in Roassal there is a way to embed clickable interaction.
> 
> Cheers,
> Alexandre
> 
>> Begin forwarded message:
>> 
>> From: Andrei Stebakov 
>> Subject: [Pharo-users] From Roassal RTView to html
>> Date: February 2, 2018 at 1:53:50 PM GMT-3
>> To: Any question about pharo is welcome 
>> Reply-To: Any question about pharo is welcome 
>> 
>> 
>> I was wondering if it's a good idea to expose some of the Roassal models 
>> via web (say Seaside) using the ability of Roassal to generate HTML for 
>> the view. 
>> In this case how could I "spice up" the HTML making for example those 
>> ellipces or lablels clickabe so the click could take me to some web page 
>> bases on the data in the model?
>> 
> 
 
>>> 
>> 
> 

Re: [Pharo-users] From Roassal RTView to html

[Andrei Stebakov]

Milton, thanks for the example.
I wonder why the link it takes me to has an appended ".html" at the end
like "https://twitter.com.html;?

On Mon, Feb 5, 2018 at 12:55 PM, milton mamani  wrote:

> Hi Andrei,
>
> This is some example.
>
> Let me know if this is what you want.
>
> Run this in a playground with the last version of roassal:
>
>
> .=..=..=..=..=..=..=..=..=..=..=..=..=..=..=..=..=..=..=..=..=..=..=..=.
> .=..=..=..=..=..=..=..=.
>
> b := RTMondrian new.
> b shape text color: [Color random].
> b nodes: { 'https://facebook.com'. 'https://twitter.com'. '
> https://plus.google.com' }.
> b build.
> link := RTLinkView new
> name: [ :model | model ] "#yourself";
> view: nil.
> b view elements @ link.
>
> RTHTML5Exporter new
> fileName: 'roassalfile.html';
> export: b view.
> b view
>
> .=..=..=..=..=..=..=..=..=..=..=..=..=..=..=..=..=..=..=..=..=..=..=..=.
> .=..=..=..=..=..=..=..=.
>
> Best regards,
> Milton
>
>
>
>
>
> 2018-02-05 14:16 GMT-03:00 Andrei Stebakov :
>
>> I'll try to find if there is a way to embed a clickable interaction.
>> Looks like since there is no response to the topic, I was wondering if
>> it's a non-pharo/roassal way to do it or it's just not so many people tried
>> it.
>>
>> On Sat, Feb 3, 2018 at 5:42 AM, Alexandre Bergel > > wrote:
>>
>>> Hi Milton,
>>>
>>> Can you answer to Andrei please?
>>> I know in Roassal there is a way to embed clickable interaction.
>>>
>>> Cheers,
>>> Alexandre
>>>
>>> Begin forwarded message:
>>>
>>> *From: *Andrei Stebakov 
>>> *Subject: **[Pharo-users] From Roassal RTView to html*
>>> *Date: *February 2, 2018 at 1:53:50 PM GMT-3
>>> *To: *Any question about pharo is welcome 
>>> *Reply-To: *Any question about pharo is welcome <
>>> pharo-users@lists.pharo.org>
>>>
>>> I was wondering if it's a good idea to expose some of the Roassal models
>>> via web (say Seaside) using the ability of Roassal to generate HTML for the
>>> view.
>>> In this case how could I "spice up" the HTML making for example those
>>> ellipces or lablels clickabe so the click could take me to some web page
>>> bases on the data in the model?
>>>
>>>
>>>
>>
>

Re: [Pharo-users] From Roassal RTView to html

[Andrei Stebakov]

I'll try to find if there is a way to embed a clickable interaction.
Looks like since there is no response to the topic, I was wondering if it's
a non-pharo/roassal way to do it or it's just not so many people tried it.

On Sat, Feb 3, 2018 at 5:42 AM, Alexandre Bergel 
wrote:

> Hi Milton,
>
> Can you answer to Andrei please?
> I know in Roassal there is a way to embed clickable interaction.
>
> Cheers,
> Alexandre
>
> Begin forwarded message:
>
> *From: *Andrei Stebakov 
> *Subject: **[Pharo-users] From Roassal RTView to html*
> *Date: *February 2, 2018 at 1:53:50 PM GMT-3
> *To: *Any question about pharo is welcome 
> *Reply-To: *Any question about pharo is welcome <
> pharo-users@lists.pharo.org>
>
> I was wondering if it's a good idea to expose some of the Roassal models
> via web (say Seaside) using the ability of Roassal to generate HTML for the
> view.
> In this case how could I "spice up" the HTML making for example those
> ellipces or lablels clickabe so the click could take me to some web page
> bases on the data in the model?
>
>
>

[Pharo-users] image lockdown/deployment mode

[Baveco, Hans]

Is there a way to disable the programmer facilities and produce a locked image 
for an end user? I would be happy if I could at least replace the world menu 
with a custom menu.
In the developers-list archives I only found an old discussion (May 26 2010 
Image Lockdown/Deployment mode), without actual solutions. Maybe these are 
available now?
TIA
Hans

Re: [Pharo-users] Neural Network - Handwritten Digit Recognition

[francesco agati]

nice,
the model can also be serialized for loading in other vm?

2018-02-04 13:42 GMT+01:00 Pierce Ng :

> Hi all,
>
> I've written a blog post on recognizing handwritten digits using neural
> networks in Pharo.
>
>   http://www.samadhiweb.com/blog/2018.02.04.neural.networks.html
>
> I attach here two screenshots built using Roassal showing good and bad
> recognition outcomes. I must say Roassal is great!
>
> Comments welcome here or on my blog.
>
> Pierce
>
>

Re: [Pharo-users] Pharo things analog reads ?

[Denis Kudriashov]

Hi Steven.

I added I2C support
 to
PharoThings and WiringPi.

Now you can ask the board instance for I2C connection:

i2cConnection := board connectToI2CDevice: 4.


And then read/write data using wiringpi functions like:

i2cConnection readData.
i2cConnection read8BitsAt: 16r32 "register".

i2cConnection writeData: 16rAB.
i2cConnection write8BitsAt: 16r32 "register" data: 16rA5.


Also I added I2CDevice as superclass for simple i2c devices. There is
example of accelerometer ADXL345. Look for details.


Best regards,
Denis


2017-12-19 23:20 GMT+01:00 Steven Costiou :

> hi,
>
> i've tried i2c and added ffi calls in WiringPiLibrary.
>
> *wiringPiI2cSetup: devId*
>
> ^self ffiCall: #(int wiringPiI2CSetup (int devId) )
>
> *readI2C: fd*
>
> ^self ffiCall: #(int wiringPiI2CRead (int fd))
>
> Then the following script is able to read a byte from a connected device
> (i tried with a trinket https://learn.adafruit.com/introducing-trinket/
> introduction):
> 
>
> |lib addr val|
>
> lib := WiringPiLibrary uniqueInstance.
>
> addr := self wiringPiSetupI2C: 4. *“Setup the i2c to the 0x04 address”*
> val := self readI2C: addr. *“Read a byte from the i2c address”*
>
> val inspect
>
> So connecting an Arduino-like device to the raspberry that is configured
> as an i2c slave, Pharo can ask for analog values. I will try tomorrow with
> analog sensors, I will share if i manage to build nice examples.
>
> Seems to be even easier using a special chip: https://learn.adafruit.com/
> reading-a-analog-in-and-controlling-audio-volume-with-
> the-raspberry-pi?view=all
>
> but it uses more pins on the board.
>
> Steven.
>
>
>
> Le 2017-12-17 19:48, Denis Kudriashov a écrit :
>
> Hi Steven
>
> 2017-12-17 12:40 GMT+01:00 Steven Costiou :
>
>> Hi,
>>
>> For what i know, raspberry pi boards cannot read analog sensors (which
>> are the most interesting imo), except by connecting to some kind of bridges
>> or to Arduino boards.
>>
>> In the PharoTHings code i see that there are Arduino classes, and also it
>> is based on wiringpi and wiringpi provides support for i2c which is needed
>> to connect to an Arduino and perform analog reads.
>>
>> I'm exploring the wiringpi doc to see if there is an example for that,
>> but in the meantime, would someone already have an example of analog reads
>> with PharoThings, with working code (even simple) ?
>>
> It is in my todo. I need to build example with temperature sensor. I will
> continue work on it next year.
> Now feel free to contribute to the project.
>
> About Arduino: it is not finished. Problem that I use Mac but serial port
> is not working there (it is required for Firmata)
>
>>
>>
>> Steven.
>>
>

Re: [Pharo-users] How can a Morph display a context menu on a mouse click?

[Stephan Eggermont]

Juraj Kubelka 
wrote:
>> morph := 'Hello' asMorph.
>> morph on: #mouseUp send: #traceCr: to: morph.
>> morph openInWindow.
>> 
> 
> This does not work for me either. 
> I am fine with the MorphicEventHandler solution.

Not at all? Or do you just need to use the variant sending #value: to a
block with the morph as an argument?

Stephan

Re: [Pharo-users] How can a Morph display a context menu on a mouse click?

[Juraj Kubelka]

> El 03-02-2018, a las 07:26, stephan  escribió:
> 
> On 02-02-18 15:19, Juraj Kubelka wrote:
>> Thank you Stephan!
>> There is my exercise:
>> “when:send:to"
>> morph := 'Hello' asMorph.
>> morph when: #click send: #traceCr: to: morph.
>> morph openInWindow.
> 
> Sorry
> 
> morph := 'Hello' asMorph.
> morph on: #mouseUp send: #traceCr: to: morph.
> morph openInWindow.
> 

This does not work for me either. 
I am fine with the MorphicEventHandler solution.

Thanks!
Juraj

Re: [Pharo-users] global exception handler mechanism

[Igor Stasenko]

On 5 February 2018 at 10:17, Marcus Denker  wrote:

> Hello,
>
> The Sunit-Debugger does a stack search on startup to find the test related
> exception.
>
> It might be good to do it better, especially as the debug process starts
> from the exception
> I might be a good idea to actually keep a reference to it.
>
> Would there be any downside of Exception>>debug passing a reference to the
> Debugger?
>
> Marcus
>
>
> > On 2 Feb 2018, at 17:19, Peter Uhnák  wrote:
> >
> > Hi,
> >
> > is there a way to install a global handler for exceptions?
> >
> > Right now if I want to log all exceptions, I use approach from ShoreLine
> and create a PreDebugAction which is activated when any "unhandled"
> exception occurs.
> >
> > That would be good enough, however the Debugger has zero knowledge of
> the exception that is actually occuring, as Exception>>debug passes on only
> the title. So if I want to get back to the original exception and maybe log
> it with beacon, I need to do a lot of stack and context shenanigans:
> >
> > MyPreDebugAction>>logException
> >   MyLogger
> >   runDuring: [ (debugger session interruptedProcess
> suspendedContext stack
> >   detect: [ :context | context receiver
> isKindOf: Exception ]) receiver emit ]
> >
> >
> > Is there a better way to approach this?
>

if you own a process (you creating it) , then it is just a piece of cake,
just make a topmost block
with #on:do:
if you don't own a process (suppose you wanna watch already existing one) ,
it can be done by injecting own context at the bottom of stack ,
well, unless there are exception handler(s) upper, that catch any
exception(s) before you can see them.

I think a much better way would be to watch exceptions even before they
being handled,
for this, i would override Exception>>#signal
and add some kind of logging or notification .. well, anything you see fit.
That's, of course, a kind of dangerous, be careful. Do not attempt to throw
new exceptions while processing just signaled one, else
you'll get infinite recursion :)


>
> > Thanks,
> > Peter
>
>
>


-- 
Best regards,
Igor Stasenko.

Re: [Pharo-users] global exception handler mechanism

[Marcus Denker]

Hello,

The Sunit-Debugger does a stack search on startup to find the test related 
exception.

It might be good to do it better, especially as the debug process starts from 
the exception
I might be a good idea to actually keep a reference to it.

Would there be any downside of Exception>>debug passing a reference to the 
Debugger?

Marcus


> On 2 Feb 2018, at 17:19, Peter Uhnák  wrote:
> 
> Hi,
> 
> is there a way to install a global handler for exceptions?
> 
> Right now if I want to log all exceptions, I use approach from ShoreLine and 
> create a PreDebugAction which is activated when any "unhandled" exception 
> occurs.
> 
> That would be good enough, however the Debugger has zero knowledge of the 
> exception that is actually occuring, as Exception>>debug passes on only the 
> title. So if I want to get back to the original exception and maybe log it 
> with beacon, I need to do a lot of stack and context shenanigans:
> 
> MyPreDebugAction>>logException
>   MyLogger
>   runDuring: [ (debugger session interruptedProcess 
> suspendedContext stack
>   detect: [ :context | context receiver isKindOf: 
> Exception ]) receiver emit ]
> 
> 
> Is there a better way to approach this?
> 
> Thanks,
> Peter