How do I subclass QDial to show notches values ?

[mrjj]

why not?
Look in help then?

http://doc.qt.io/qt-5/qstyleoption.html#rect-var

[Punt]

@mrjj
Now the problem is I can extend the area and write text in the right and in the bottom of the QDial (because the QDial is drawn (good english ?!) in the left-top (0,0) ). And I don't have any idea how to change that.. I searched if there is something like the position where qt draw of something like that, but didn't find it .. --'

[mrjj]

hi
Not tested myself.
option.rect should control where QDial is
and the normal rect is your widget.

So if u set option.rect before
p.drawComplex

U should be able to move it around?

[Punt]

@mrjj
Look, if I

option.rect.setX(20)

this is just moving one part of the QDial --'
Gyazo

And what do you mean about the normal rect ?

The only rect I have is option.rect no ?!

[mrjj]

@Punt
Option has rect yes, used for the drawComplexControl call.
You own widget, also has rect, simply called rect or this->rect
which is the real area since the QDial is just painted.

[Punt]

@mrjj

    rect().setRect(0,0,200,200);
    option.rect.setRect(30,30,100,100);
    p.drawText(120,120,"(120,120)");
    p.drawText(30,30,"(30,30)");
    p.drawText(200,200,"(200,200)");

=> Gyazo

I don't find anything to move ticks ...

[mrjj]

Hmm
so it dont use option.rect() for the tick drawing.
Strange.

Alternatively
new a layout
set to your widget
New a QDial
add to layout
adjust layout margins to get room for text.
Paint the text in paintEvent.
Remove the drawComplexControl etc.

[Punt]

@mrjj
In my subclass ?

[mrjj]

@Punt
Yes
In constructor
so it becomes a composite widget with a normal QDial inside.
You will also have to create some public signal to use from outside
since you cannot directly connect to the QDail.

[mrjj]

Hi
yes that seems to be possible.

https://www.dropbox.com/s/5hjry2pcb0mpsi2/myqdial.zip?dl=0
I just did it in Creator for test. Using code in
CustomDial is smarter.

[Punt]

@mrjj

Sorry was busy...
I don't understand how to do it..
I tried, when I want to use layout() this is crashing.. I tried different things but isn't working, I'm tired of this button x)

[mrjj]

@Punt
Np.
Did u try test?
U must create layout first with new
and assign to ur widget
else
layout() returns null.
something like
QVBoxLayou *verticalLayout = new QVBoxLayout(this);
verticalLayout->setContentsMargins(32, 32, 32, 32);
QDial *dial = new QDial(this); ** might have this as class memeber
verticalLayout->addWidget(dial);

[Punt]

@mrjj said:

@Punt
Np.
Did u try test?
U must create layout first with new
and assign to ur widget
else
layout() returns null.
something like
QVBoxLayou *verticalLayout = new QVBoxLayout(this);
verticalLayout->setContentsMargins(32, 32, 32, 32);
QDial *dial = new QDial(this); ** might have this as class memeber
verticalLayout->addWidget(dial);

Ok that worked, thanks bro ! now I'll add my texts where I want :)

[mrjj]

super!
You might need to surface some of the signals from the QDial to make
it do anything usefull.

In this regards , please note that u -can- connect signals to signals
So you can define some new public signals and hook the new signals
to the QDial signals.
From outside u can then connect to the new signals.