From kde-panel-devel  Mon Jun 25 02:58:37 2012
From: Eric Mesa <ericsbinaryworld () gmail ! com>
Date: Mon, 25 Jun 2012 02:58:37 +0000
To: kde-panel-devel
Subject: Re: QML, Python, Signals, and Slots
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Yup!  I just figured out your first answer on my own.  Thanks again for all
your help!
--
Eric Mesa
http://about.me/ericmesa
http://www.ericsbinaryworld.com



On Sun, Jun 24, 2012 at 10:32 PM, Viranch Mehta <viranch.mehta@gmail.com>wrote:

> On Sun, Jun 24, 2012 at 8:26 PM, Eric Mesa <ericsbinaryworld@gmail.com>wrote:
>
>>
>> Just curious about one thing:
>> 1) With this framework I can get information from the python program to
>> affect the QML (and change the button to a blue colour).  How do I get
>> information to the python program?   In other words, if I have a python
>> function that's function(int) -> how do I provide the int argument for the
>> python FROM the QML?
>>
>
> you simply declare the signal as: updateRequired(int number); and connect
> it to the slot that
> accepts an integer.
>
>
>> It's a little hard for me to figure out because this stuff is all
>> indirect - in the QML the signal is referred to as if it were a function.
>> And the function gets the data from the signal, but it doesn't seem to make
>> sense how that happens because there's no real link to it.  I kinda
>> understand what I'm doing, but not enough to figure out how to get the into
>> to python.
>>
>
> the view.rootObject() is your qml's root item. when you declare a signal
> in qml, it gets created
> as a normal Qt signal, which you can then connect to any c++ (or in this
> case, python) slot.
> yes, the signal is a function (that optionally takes arguments), which
> calls all the slots that we
> connect to the signal (and the arguments are passed to them, if any).
>
> Viranch
>
> _______________________________________________
> Plasma-devel mailing list
> Plasma-devel@kde.org
> https://mail.kde.org/mailman/listinfo/plasma-devel
>
>

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Yup!=A0 I just figured out your first answer on my own.=A0 Thanks again for=
 all your help!<br clear=3D"all">--<br>Eric Mesa<div><a href=3D"http://abou=
t.me/ericmesa" target=3D"_blank">http://about.me/ericmesa</a><br><a href=3D=
"http://www.ericsbinaryworld.com" target=3D"_blank">http://www.ericsbinaryw=
orld.com</a></div>
<br>
<br><br><div class=3D"gmail_quote">On Sun, Jun 24, 2012 at 10:32 PM, Viranc=
h Mehta <span dir=3D"ltr">&lt;<a href=3D"mailto:viranch.mehta@gmail.com" ta=
rget=3D"_blank">viranch.mehta@gmail.com</a>&gt;</span> wrote:<br><blockquot=
e class=3D"gmail_quote" style=3D"margin:0 0 0 .8ex;border-left:1px #ccc sol=
id;padding-left:1ex">
<div class=3D"im">On Sun, Jun 24, 2012 at 8:26 PM, Eric Mesa <span dir=3D"l=
tr">&lt;<a href=3D"mailto:ericsbinaryworld@gmail.com" target=3D"_blank">eri=
csbinaryworld@gmail.com</a>&gt;</span> wrote:<br></div><div class=3D"gmail_=
quote">
<div class=3D"im"><blockquote class=3D"gmail_quote" style=3D"margin:0 0 0 .=
8ex;border-left:1px #ccc solid;padding-left:1ex">
<br>Just curious about one thing:<br>1) With this framework I can get infor=
mation from the python program to affect the QML (and change the button to =
a blue colour).=A0 How do I get information to the python program?=A0=A0 In=
 other words, if I have a python function that&#39;s function(int) -&gt; ho=
w do I provide the int argument for the python FROM the QML?=A0 <br>

</blockquote><div><br></div></div><div>you simply declare the signal as: up=
dateRequired(int number); and connect it to the slot that</div><div>accepts=
 an integer.</div><div class=3D"im"><div>=A0</div><blockquote class=3D"gmai=
l_quote" style=3D"margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left=
:1ex">

It&#39;s a little hard for me to figure out because this stuff is all indir=
ect - in the QML the signal is referred to as if it were a function.=A0 And=
 the function gets the data from the signal, but it doesn&#39;t seem to mak=
e sense how that happens because there&#39;s no real link to it.=A0 I kinda=
 understand what I&#39;m doing, but not enough to figure out how to get the=
 into to python.<br>

</blockquote><div><br></div></div><div>the view.rootObject() is your qml&#3=
9;s root item. when you declare a signal in qml, it gets created</div><div>=
as a normal Qt signal, which you can then connect to any c++ (or in this ca=
se, python) slot.</div>

<div>yes, the signal is a function (that optionally takes arguments), which=
 calls all the slots that we</div><div>connect to the signal (and the argum=
ents are passed to them, if any).</div><span class=3D"HOEnZb"><font color=
=3D"#888888"><div>
</div></font></span></div><span class=3D"HOEnZb"><font color=3D"#888888"><b=
r><div>Viranch</div>
</font></span><br>_______________________________________________<br>
Plasma-devel mailing list<br>
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<a href=3D"https://mail.kde.org/mailman/listinfo/plasma-devel" target=3D"_b=
lank">https://mail.kde.org/mailman/listinfo/plasma-devel</a><br>
<br></blockquote></div><br>

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