[Development] Review for new widget module [your advices are needed]

André Hartmann andre.hartmann at iseg-hv.de
Mon Oct 16 08:58:55 CEST 2017

Hi Chris,

Am 16.10.2017 um 08:11 schrieb Christian Gagneraud:
>  From an end user point of view, i think it's a great idea but I think 
> it conflicts with Qml.
> At work we have our own set of highly customised widgets, for embedded 
> devices, it simply works, no need (yet) for Qml.
> I would be interested to see your work and give my opinion if it can help.
> Full disclosure: I've never been a reviewer, but went through the 
> process as a contributor a couple of times (qt or not).
> Don't expect a +1 from me as I'm not a Qt Project member.

That does not matter. Everyone (with a Qt account) can give a +1. And 
everyone can participate on reviews to make the changes better.

Best regards,

> Thiago sent a link recently to a blog post regarding code review 
> process. Step 1 is all about the idea itself.
> Chris
> --
> Answering from my phone, please excuse my brievity.
> On 16/10/2017 6:53 pm, "iman ahmadvand" <iman72411 at gmail.com 
> <mailto:iman72411 at gmail.com>> wrote:
>     No one interested ?
>     On Sat, Oct 14, 2017 at 11:03 AM, iman ahmadvand
>     <iman72411 at gmail.com <mailto:iman72411 at gmail.com>> wrote:
>         Hi everyone.
>         Before I send some code base on codereview and decide whether my
>         implementation meets the requirements,  I  just want to know
>         your thoughts about design decision for the new module I’m
>         trying to add to Qt Play ground.
>         So as you probably guessed my plan is to developing a new widget
>         module (which I’m going to name it MaterialWidgets) for Qt, a
>         modern collection of widgets that should have the same look and
>         feel on all platforms. All the GUI parameters and styles are
>         taken from material style guide
>         line(https://material.io/guidelines
>         <https://material.io/guidelines>). You can think of
>         MaterialWidgets as the MaterialStyle in QML design but in pure C++.
>         Here is a few things to clarify:
>         1.Why someone need to use material styled widgets in Qt?
>         There are a bunch of app out there that need this to be
>         available on widgets so they can easily take the benefit of
>         newly added widget set.
>         2.Why a new widget set? why just no to use already built-in styles?
>         Material widgets are going to be a special set of controls which
>         has animations by default, and GUI parameters are differs from
>         built-in QtWidgets. for an example material style has a
>         component called ContinuousSlider which has two sub component
>         Thumb and Track and two state On(value == 0) and Off(value != 0)
>         and a color palette for each state, so doing this with styles
>         can't be done unless we change the enumerators and maybe more!
>         3.Are every thing from scratch ?
>         No. not at all.
>         I just make some changes in inherited classes from built-in
>         QtWidgets (basics AND abstracts), so the logics behind those
>         widgets should be the same.
>         A note for animation implementation  in MaterialWidgets:
>         A class called Animation is responsible for animating those
>         widgets, the simple idea behind that is to have a target object
>         (which mostly is a widget) associated with animation objet and
>         after every refresh in animation (updateCurrentValue) we should
>         make an update of type StyleAnimationUpdate in target widget so
>         it makes the code base more cleaner.
>         Here you can see just a review version of module (just
>         ContinuousSlider is included): ​
>         qtmaterialwidgets.zip
>         <https://drive.google.com/file/d/0BxRSkzkLrTjVeS1xd0VRMHJQS0k/view?usp=drive_web>
>         I'm ready to hear your advices and thoughts.
>         Regards
>         Iman.
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Best regards / Mit freundlichen Grüßen
André Hartmann, Dipl.-Ing. (FH)
Software Project Manager

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