Re: [Interest] [Quick Controls 2] Best way to add binding arrow tip to Popup?

[Shawn Rutledge]

> It probably wasn't mentioned because it's got a bad reputation as being slow. 
> It's easy to abuse it and end up with crappy performance. As long as you 
> limit the amount of painting you do and how often you do it, I don't think 
> using it is really an issue in practice.
...
> like Canvas is not the really good solution - just a workaround. That is, it 
> not claims to be "support for arbitrary shapes in QtQuick".

Yes Canvas uses QPainter to render a texture on the CPU, which is then uploaded 
to the GPU.  Besides the drawing commands being in Javascript.

It’s not that bad in practice, just not as efficient as it could be.  You might 
not be able to redraw it at 60FPS.

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Re: [Interest] [Quick Controls 2] Best way to add binding arrow tip to Popup?

[Oleg Evseev]

> It probably wasn't mentioned because it's got a bad reputation as being
> slow. It's easy to abuse it and end up with crappy performance. As long as
> you limit the amount of painting you do and how often you do it, I don't
> think using it is really an issue in practice.


I see, thanks for help!
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Re: [Interest] [Quick Controls 2] Best way to add binding arrow tip to Popup?

[Mitch Curtis]

It probably wasn't mentioned because it's got a bad reputation as being slow. 
It's easy to abuse it and end up with crappy performance. As long as you limit 
the amount of painting you do and how often you do it, I don't think using it 
is really an issue in practice.


From: Interest <interest-bounces+mitch.curtis=qt...@qt-project.org> on behalf 
of Oleg Evseev <ev.m...@gmail.com>
Sent: Wednesday, 12 October 2016 1:48:54 PM
To: Qt Project
Subject: Re: [Interest] [Quick Controls 2] Best way to add binding arrow tip to 
Popup?

Great thanks, Shawn.

Canvas is what I searching for!

Even in canvas example there is a Talk bubble example that is look similar to 
tipped Popup!
[Встроенное изображение 1]

Canvas is Qt Quick Item, so it is quite easy to add it on the scene and add a 
shadows (or other effects) to it
[Встроенное изображение 2]
and use it as background for Qt Quick Controls.

Only thing that I miss is the inner border in Canvas (to be identical to 
Rectangle drawing principle). But for simple tipped popup (rectangle with 
rounded corners and tip) it was quite easy to recalculate coordinates points.
Plus, apparently there is the other solution with globalCompositeOperation 
http://stackoverflow.com/a/34234589/5765076 for complex shapes (didn't test it).

I made tipped rectangle with Canvas and it looks great!

I really surprised, why using Canvas item was not suggested in first place?!

And you, Shawn, write this:

... we've always needed support for arbitrary shapes in QtQuick.  We’ll have 
them eventually…

like Canvas is not the really good solution - just a workaround. That is, it 
not claims to be "support for arbitrary shapes in QtQuick".

Why? How your ideal support for arbitrary shapes in QtQuick will look like in 
general words, then?

What about Canvas vs QSGGeometry Node approach? Only performance aspects?

--
Regards, Oleg.

2016-10-10 10:41 GMT+03:00 Shawn Rutledge 
<shawn.rutle...@qt.io<mailto:shawn.rutle...@qt.io>>:
You can add two rotated rectangles, one underneath for the border, and one (on 
top) for the fill, to cover up the edge of the main rectangle.  Next you will 
want a drop shadow, then you need a couple more Rectangles (or something from 
GraphicalEffects) underneath.

This is a good illustration of why we've always needed support for arbitrary 
shapes in QtQuick.  We’ll have them eventually…

Meanwhile you can use Canvas (draw the shape) or BorderImage (pull edge, corner 
and center pieces from an image and assemble them into a resizable balloon).

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Re: [Interest] [Quick Controls 2] Best way to add binding arrow tip to Popup?

[Oleg Evseev]

Jérôme, I didn't understand what your suggestion for?

One can easy draw round cornered rectangle with Canvas (see roundedrect.qml
in canvas example)
[image: Встроенное изображение 1]

Based on that example I did my rectangle (with *all *rounded corners) with
tip in one draw path and solved my problem.

2016-10-12 16:32 GMT+03:00 Jérôme Godbout :

> For the round corner with rectangle:
>
> Rectangle
> {
>   border.width: 2
>   border.color: "black"
>   color: Qt.rgba(0,0,0,0)
>   clip: true
>   width: canvas_.width
>   height: canvas_.height
>   Canvas
>   {
> ...
>   }
> }
>
> Using the clip and the round corner should work.
>
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Re: [Interest] [Quick Controls 2] Best way to add binding arrow tip to Popup?

[Jérôme Godbout]

For the round corner with rectangle:

Rectangle
{
  border.width: 2
  border.color: "black"
  color: Qt.rgba(0,0,0,0)
  clip: true
  width: canvas_.width
  height: canvas_.height
  Canvas
  {
...
  }
}

Using the clip and the round corner should work.

On Wed, Oct 12, 2016 at 7:48 AM, Oleg Evseev  wrote:

> Great thanks, Shawn.
>
> Canvas is what I searching for!
>
> Even in canvas example there is a Talk bubble example that is look similar
> to tipped Popup!
> [image: Встроенное изображение 1]
>
> Canvas is Qt Quick Item, so it is quite easy to add it on the scene and
> add a shadows (or other effects) to it
> [image: Встроенное изображение 2]
> and use it as background for Qt Quick Controls.
>
> Only thing that I miss is the inner border in Canvas (to be identical to
> Rectangle drawing principle). But for simple tipped popup (rectangle with
> rounded corners and tip) it was quite easy to recalculate coordinates
> points.
> Plus, apparently there is the other solution with globalCompositeOperation
> http://stackoverflow.com/a/34234589/5765076 for complex shapes (didn't
> test it).
>
> I made tipped rectangle with Canvas and it looks great!
>
> *I really surprised, why using Canvas item was not suggested in first
> place?!*
>
> And you, Shawn, write this:
>
> ... we've always needed support for arbitrary shapes in QtQuick.  We’ll
>> have them eventually…
>
>
> like Canvas is *not *the really good solution - just a workaround. That
> is, it not claims to be "support for arbitrary shapes in QtQuick".
>
> Why? How your ideal support for arbitrary shapes in QtQuick will look like
> in general words, then?
>
> What about Canvas vs QSGGeometry Node approach? Only performance aspects?
>
> --
> Regards, Oleg.
>
> 2016-10-10 10:41 GMT+03:00 Shawn Rutledge :
>
>> You can add two rotated rectangles, one underneath for the border, and
>> one (on top) for the fill, to cover up the edge of the main rectangle.
>> Next you will want a drop shadow, then you need a couple more Rectangles
>> (or something from GraphicalEffects) underneath.
>>
>> This is a good illustration of why we've always needed support for
>> arbitrary shapes in QtQuick.  We’ll have them eventually…
>>
>> Meanwhile you can use Canvas (draw the shape) or BorderImage (pull edge,
>> corner and center pieces from an image and assemble them into a resizable
>> balloon).
>>
>> ___
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>> Interest@qt-project.org
>> http://lists.qt-project.org/mailman/listinfo/interest
>>
>
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>
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Re: [Interest] [Quick Controls 2] Best way to add binding arrow tip to Popup?

[Oleg Evseev]

Great thanks, Shawn.

Canvas is what I searching for!

Even in canvas example there is a Talk bubble example that is look similar
to tipped Popup!
[image: Встроенное изображение 1]

Canvas is Qt Quick Item, so it is quite easy to add it on the scene and add
a shadows (or other effects) to it
[image: Встроенное изображение 2]
and use it as background for Qt Quick Controls.

Only thing that I miss is the inner border in Canvas (to be identical to
Rectangle drawing principle). But for simple tipped popup (rectangle with
rounded corners and tip) it was quite easy to recalculate coordinates
points.
Plus, apparently there is the other solution with globalCompositeOperation
http://stackoverflow.com/a/34234589/5765076 for complex shapes (didn't test
it).

I made tipped rectangle with Canvas and it looks great!

*I really surprised, why using Canvas item was not suggested in first
place?!*

And you, Shawn, write this:

... we've always needed support for arbitrary shapes in QtQuick.  We’ll
> have them eventually…


like Canvas is *not *the really good solution - just a workaround. That is,
it not claims to be "support for arbitrary shapes in QtQuick".

Why? How your ideal support for arbitrary shapes in QtQuick will look like
in general words, then?

What about Canvas vs QSGGeometry Node approach? Only performance aspects?

--
Regards, Oleg.

2016-10-10 10:41 GMT+03:00 Shawn Rutledge :

> You can add two rotated rectangles, one underneath for the border, and one
> (on top) for the fill, to cover up the edge of the main rectangle.  Next
> you will want a drop shadow, then you need a couple more Rectangles (or
> something from GraphicalEffects) underneath.
>
> This is a good illustration of why we've always needed support for
> arbitrary shapes in QtQuick.  We’ll have them eventually…
>
> Meanwhile you can use Canvas (draw the shape) or BorderImage (pull edge,
> corner and center pieces from an image and assemble them into a resizable
> balloon).
>
> ___
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> Interest@qt-project.org
> http://lists.qt-project.org/mailman/listinfo/interest
>
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Re: [Interest] [Quick Controls 2] Best way to add binding arrow tip to Popup?

[Oleg Evseev]

> using an Image is a very simple solution

Thanks for suggestion!

2016-10-07 8:27 GMT+03:00 Gunnar Sletta :

> Although you can do a custom shape like this using QSGGeometryNode, using
> an Image is a very simple solution which also gives you complete control
> over the look and how it integrates with the rest of the popup. And all
> from QML..
>
> cheers,
> Gunnar
>
> > On 06 Oct 2016, at 21:22, Oleg Evseev  wrote:
> >
> > But lack of this solution - you can not set the opacity of such
> constructed popup :)
> >
> > Plus, I think, set elevation to get shade of popup without doing it for
> arrow tip will not have a good look.
> >
> > 2016-10-06 22:16 GMT+03:00 Oleg Evseev :
> > And yes I understand that this could be done with help of clipping
> rotated rectangle by half and get it ahead of popup with border offset
> overlap.
> >
> > But lack of this solution - you can not set the opacity of such
> constructed popup :)
> >
> >
> > 2016-10-06 22:11 GMT+03:00 Oleg Evseev :
> > Thanks for suggestion, Jérôme.
> > I thought about such workaround, but for me it would be very nice to
> have border of such popup.
> >
> > 2016-10-06 21:19 GMT+03:00 Jérôme Godbout :
> > More a workaround then a real solution, but could work as long as the
> triangle is still sharp 90 angle.
> >
> > Item
> > {
> >   id: component
> >   property real sizing: 10
> >   property alias color: rect_.color
> >   property alias border: rect_.border
> >   width: sizing
> >   height: sizing
> >   clip: true
> >
> >   Rectangle
> >   {
> >  id: rect_
> >  width: component.width
> >  height: component.height
> >  color: "gray"
> >  // change the rotation values based on orientation here
> >  transform: Rotation { origin.x: 0; origin.y: 0; angle: 90 }
> >   }
> > }
> >
> > On Thu, Oct 6, 2016 at 7:12 AM, Oleg Evseev  wrote:
> > Hi everyone,
> >
> > I'm interesting how to add arrow tip to popup, that looks like this:
> >
> >
> >
> > If I understand correctly, according to http://doc.qt.io/qt-5/qtquick-
> scenegraph-customgeometry-example.html I have an option to do custom
> shape qt quick item instead of simple rectangle with help of QSGGeometry.
> >
> > Is this a best way to do such things?
> >
> > Thanks in advance for recommendations.
> >
> > ---
> > Regards, Oleg
> >
> > ___
> > Interest mailing list
> > Interest@qt-project.org
> > http://lists.qt-project.org/mailman/listinfo/interest
> >
> >
> >
> >
> >
> > ___
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> > Interest@qt-project.org
> > http://lists.qt-project.org/mailman/listinfo/interest
>
>
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Re: [Interest] [Quick Controls 2] Best way to add binding arrow tip to Popup?

[Gunnar Sletta]

Although you can do a custom shape like this using QSGGeometryNode, using an 
Image is a very simple solution which also gives you complete control over the 
look and how it integrates with the rest of the popup. And all from QML..

cheers,
Gunnar

> On 06 Oct 2016, at 21:22, Oleg Evseev  wrote:
> 
> But lack of this solution - you can not set the opacity of such constructed 
> popup :)
> 
> Plus, I think, set elevation to get shade of popup without doing it for arrow 
> tip will not have a good look.
> 
> 2016-10-06 22:16 GMT+03:00 Oleg Evseev :
> And yes I understand that this could be done with help of clipping rotated 
> rectangle by half and get it ahead of popup with border offset overlap.
> 
> But lack of this solution - you can not set the opacity of such constructed 
> popup :)
> 
> 
> 2016-10-06 22:11 GMT+03:00 Oleg Evseev :
> Thanks for suggestion, Jérôme.
> I thought about such workaround, but for me it would be very nice to have 
> border of such popup.
> 
> 2016-10-06 21:19 GMT+03:00 Jérôme Godbout :
> More a workaround then a real solution, but could work as long as the 
> triangle is still sharp 90 angle.
> 
> Item
> {
>   id: component
>   property real sizing: 10
>   property alias color: rect_.color
>   property alias border: rect_.border
>   width: sizing
>   height: sizing
>   clip: true
> 
>   Rectangle
>   {
>  id: rect_
>  width: component.width
>  height: component.height
>  color: "gray"
>  // change the rotation values based on orientation here
>  transform: Rotation { origin.x: 0; origin.y: 0; angle: 90 }
>   }
> }
> 
> On Thu, Oct 6, 2016 at 7:12 AM, Oleg Evseev  wrote:
> Hi everyone,
> 
> I'm interesting how to add arrow tip to popup, that looks like this:
> 
>  
> 
> If I understand correctly, according to 
> http://doc.qt.io/qt-5/qtquick-scenegraph-customgeometry-example.html I have 
> an option to do custom shape qt quick item instead of simple rectangle with 
> help of QSGGeometry.
> 
> Is this a best way to do such things?
> 
> Thanks in advance for recommendations.
> 
> ---
> Regards, Oleg
> 
> ___
> Interest mailing list
> Interest@qt-project.org
> http://lists.qt-project.org/mailman/listinfo/interest
> 
> 
> 
> 
> 
> ___
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Re: [Interest] [Quick Controls 2] Best way to add binding arrow tip to Popup?

[Oleg Evseev]

>
> But lack of this solution - you can not set the opacity of such
> constructed popup :)


Plus, I think, set elevation to get shade of popup without doing it for
arrow tip will not have a good look.

2016-10-06 22:16 GMT+03:00 Oleg Evseev :

> And yes I understand that this could be done with help of clipping rotated
> rectangle by half and get it ahead of popup with border offset overlap.
>
> But lack of this solution - you can not set the opacity of such
> constructed popup :)
>
>
> 2016-10-06 22:11 GMT+03:00 Oleg Evseev :
>
>> Thanks for suggestion, Jérôme.
>> I thought about such workaround, but for me it would be very nice to have
>> border of such popup.
>>
>> 2016-10-06 21:19 GMT+03:00 Jérôme Godbout :
>>
>>> More a workaround then a real solution, but could work as long as the
>>> triangle is still sharp 90 angle.
>>>
>>> Item
>>> {
>>>   id: component
>>>   property real sizing: 10
>>>   property alias color: rect_.color
>>>   property alias border: rect_.border
>>>   width: sizing
>>>   height: sizing
>>>   clip: true
>>>
>>>   Rectangle
>>>   {
>>>  id: rect_
>>>  width: component.width
>>>  height: component.height
>>>  color: "gray"
>>>  // change the rotation values based on orientation here
>>>  transform: Rotation { origin.x: 0; origin.y: 0; angle: 90 }
>>>   }
>>> }
>>>
>>> On Thu, Oct 6, 2016 at 7:12 AM, Oleg Evseev  wrote:
>>>
 Hi everyone,

 I'm interesting how to add arrow tip to popup, that looks like this:



 If I understand correctly, according to http://doc.qt.io/qt-5/qtquick-
 scenegraph-customgeometry-example.html I have an option to do custom
 shape qt quick item instead of simple rectangle with help of QSGGeometry.

 Is this a best way to do such things?

 Thanks in advance for recommendations.

 ---
 Regards, Oleg

 ___
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 Interest@qt-project.org
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>>>
>
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Re: [Interest] [Quick Controls 2] Best way to add binding arrow tip to Popup?

[Oleg Evseev]

And yes I understand that this could be done with help of clipping rotated
rectangle by half and get it ahead of popup with border offset overlap.

But lack of this solution - you can not set the opacity of such constructed
popup :)

2016-10-06 22:11 GMT+03:00 Oleg Evseev :

> Thanks for suggestion, Jérôme.
> I thought about such workaround, but for me it would be very nice to have
> border of such popup.
>
> 2016-10-06 21:19 GMT+03:00 Jérôme Godbout :
>
>> More a workaround then a real solution, but could work as long as the
>> triangle is still sharp 90 angle.
>>
>> Item
>> {
>>   id: component
>>   property real sizing: 10
>>   property alias color: rect_.color
>>   property alias border: rect_.border
>>   width: sizing
>>   height: sizing
>>   clip: true
>>
>>   Rectangle
>>   {
>>  id: rect_
>>  width: component.width
>>  height: component.height
>>  color: "gray"
>>  // change the rotation values based on orientation here
>>  transform: Rotation { origin.x: 0; origin.y: 0; angle: 90 }
>>   }
>> }
>>
>> On Thu, Oct 6, 2016 at 7:12 AM, Oleg Evseev  wrote:
>>
>>> Hi everyone,
>>>
>>> I'm interesting how to add arrow tip to popup, that looks like this:
>>>
>>>
>>>
>>> If I understand correctly, according to http://doc.qt.io/qt-5/qtquick-
>>> scenegraph-customgeometry-example.html I have an option to do custom
>>> shape qt quick item instead of simple rectangle with help of QSGGeometry.
>>>
>>> Is this a best way to do such things?
>>>
>>> Thanks in advance for recommendations.
>>>
>>> ---
>>> Regards, Oleg
>>>
>>> ___
>>> Interest mailing list
>>> Interest@qt-project.org
>>> http://lists.qt-project.org/mailman/listinfo/interest
>>>
>>>
>>
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Re: [Interest] [Quick Controls 2] Best way to add binding arrow tip to Popup?

[Oleg Evseev]

Thanks for suggestion, Jérôme.
I thought about such workaround, but for me it would be very nice to have
border of such popup.

2016-10-06 21:19 GMT+03:00 Jérôme Godbout :

> More a workaround then a real solution, but could work as long as the
> triangle is still sharp 90 angle.
>
> Item
> {
>   id: component
>   property real sizing: 10
>   property alias color: rect_.color
>   property alias border: rect_.border
>   width: sizing
>   height: sizing
>   clip: true
>
>   Rectangle
>   {
>  id: rect_
>  width: component.width
>  height: component.height
>  color: "gray"
>  // change the rotation values based on orientation here
>  transform: Rotation { origin.x: 0; origin.y: 0; angle: 90 }
>   }
> }
>
> On Thu, Oct 6, 2016 at 7:12 AM, Oleg Evseev  wrote:
>
>> Hi everyone,
>>
>> I'm interesting how to add arrow tip to popup, that looks like this:
>>
>>
>>
>> If I understand correctly, according to http://doc.qt.io/qt-5/qtquick-
>> scenegraph-customgeometry-example.html I have an option to do custom
>> shape qt quick item instead of simple rectangle with help of QSGGeometry.
>>
>> Is this a best way to do such things?
>>
>> Thanks in advance for recommendations.
>>
>> ---
>> Regards, Oleg
>>
>> ___
>> Interest mailing list
>> Interest@qt-project.org
>> http://lists.qt-project.org/mailman/listinfo/interest
>>
>>
>
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Re: [Interest] [Quick Controls 2] Best way to add binding arrow tip to Popup?

[Jérôme Godbout]

My bad, oups 90 deg and bad rotation center...

Item

{

id: component

property real sizing: 100

property alias color: rect_.color

property alias border: rect_.border

width: sizing

height: sizing

clip: true


Rectangle

{

id: rect_

width: component.width

height: component.height

color: "gray"

transform: Rotation { angle: 45 }

// change the translation values based on orientation here

x: component.width * -0.5

y: 0

}

}

On Thu, Oct 6, 2016 at 2:19 PM, Jérôme Godbout  wrote:

> More a workaround then a real solution, but could work as long as the
> triangle is still sharp 90 angle.
>
> Item
> {
>   id: component
>   property real sizing: 10
>   property alias color: rect_.color
>   property alias border: rect_.border
>   width: sizing
>   height: sizing
>   clip: true
>
>   Rectangle
>   {
>  id: rect_
>  width: component.width
>  height: component.height
>  color: "gray"
>  // change the rotation values based on orientation here
>  transform: Rotation { origin.x: 0; origin.y: 0; angle: 90 }
>   }
> }
>
> On Thu, Oct 6, 2016 at 7:12 AM, Oleg Evseev  wrote:
>
>> Hi everyone,
>>
>> I'm interesting how to add arrow tip to popup, that looks like this:
>>
>>
>>
>> If I understand correctly, according to http://doc.qt.io/qt-5/qtquick-
>> scenegraph-customgeometry-example.html I have an option to do custom
>> shape qt quick item instead of simple rectangle with help of QSGGeometry.
>>
>> Is this a best way to do such things?
>>
>> Thanks in advance for recommendations.
>>
>> ---
>> Regards, Oleg
>>
>> ___
>> Interest mailing list
>> Interest@qt-project.org
>> http://lists.qt-project.org/mailman/listinfo/interest
>>
>>
>
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Re: [Interest] [Quick Controls 2] Best way to add binding arrow tip to Popup?

[Jérôme Godbout]

More a workaround then a real solution, but could work as long as the
triangle is still sharp 90 angle.

Item
{
  id: component
  property real sizing: 10
  property alias color: rect_.color
  property alias border: rect_.border
  width: sizing
  height: sizing
  clip: true

  Rectangle
  {
 id: rect_
 width: component.width
 height: component.height
 color: "gray"
 // change the rotation values based on orientation here
 transform: Rotation { origin.x: 0; origin.y: 0; angle: 90 }
  }
}

On Thu, Oct 6, 2016 at 7:12 AM, Oleg Evseev  wrote:

> Hi everyone,
>
> I'm interesting how to add arrow tip to popup, that looks like this:
>
>
>
> If I understand correctly, according to http://doc.qt.io/qt-5/qtquick-
> scenegraph-customgeometry-example.html I have an option to do custom
> shape qt quick item instead of simple rectangle with help of QSGGeometry.
>
> Is this a best way to do such things?
>
> Thanks in advance for recommendations.
>
> ---
> Regards, Oleg
>
> ___
> Interest mailing list
> Interest@qt-project.org
> http://lists.qt-project.org/mailman/listinfo/interest
>
>
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[Interest] [Quick Controls 2] Best way to add binding arrow tip to Popup?

[Oleg Evseev]

Hi everyone,

I'm interesting how to add arrow tip to popup, that looks like this:



If I understand correctly, according to
http://doc.qt.io/qt-5/qtquick-scenegraph-customgeometry-example.html I have
an option to do custom shape qt quick item instead of simple rectangle with
help of QSGGeometry.

Is this a best way to do such things?

Thanks in advance for recommendations.

---
Regards, Oleg
___
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