[Development] [Google Summer of Code] [Project Ideas] Qt Quick Controls 2 Sailfish Silica Style

Mitch Curtis mitch.curtis at qt.io
Fri Apr 6 14:47:05 CEST 2018


We think this would be best in a repo outside of qtquickcontrols2.git.

The process for creating a playground repo is documented here:


Have you discussed this project with the Sailfish devs, by the way? Perhaps they would be interested in integrating your efforts upstream.

One potential problem I see is that it seems that the source code is not public:


The closest thing is this repo, which doesn’t seem to be complete:


How do you plan on implementing the style in light of this?

Speaking for myself: I would be happy to answer any questions you may have with regards to implementing a Controls 2 style, but I don’t think I can put aside enough time to be a mentor for this.


From: Alexey Andreyev [mailto:yetanotherandreyev at gmail.com]
Sent: Tuesday, 3 April 2018 2:14 PM
To: Aleksey Kontsevich <tantrido at ya.ru>
Cc: Mitch Curtis <mitch.curtis at qt.io>; development at qt-project.org
Subject: Re: [Development] [Google Summer of Code] [Project Ideas] Qt Quick Controls 2 Sailfish Silica Style

Hi, Aleksey Kontsevich! Thank you for your support, I do agree that Sailfish OS is receiving a huge contribution from Russian speaking developers and focusing on other local markets too. There's also related AsteroidOS community about smartwatches. They have a demo [1]

Talking about popularity: from my point of view, while Microsoft is providing their Metro unified look for desktop and Intel-based tablets (and Xbox) for example, looks like they do not have any plans for new mobile devices (I mean arm-based) to provide. While Sailfish OS is mobile OS with GSM-stack support for real arm-based systems. [1] Correct me if I'm wrong, I do not want to mislead anyone.

Mitch Curtis, thank you for your feedback sincerely. I do understand your skepticism about yet another controls in mainline to support. (but I do not share this personally :)
I'm new to qqc2 internals. I've cloned qtquickcontrols2 repo 5.10.1 brach (to play on my Arch Linux system). Dependency from some private APIs looks tricky for me at first glance. I'm trying to sort out. I'm not against providing silica style as some custom repo, the result I want to get is open source solution to run Qt application in my personal environment with native Silica look and feel. Will be happy to get any hints about basic repo draft in that case (should I look at Kirigami approach?)

Anyway, as I wrote at my GSoC proposal, GSoC campaign is just money support, I love Silica style, using Sailfish OS for several years and can't stand that no one is willing to port it to modern QQC2 approach :) I guess it could radically change skepticism about qt quick controls approach in general from ios and android developers.

[1]: https://www.youtube.com/watch?v=Rd86KTs2Les
[2]: https://wiki.merproject.org/wiki/Adaptations/libhybris

2018-04-03 13:38 GMT+03:00 Aleksey Kontsevich <tantrido at ya.ru<mailto:tantrido at ya.ru>>:
Hi all, my 2 cents here:

>The controls look nice, but my concern is how relevant the Silica style is these days (in the context of how many people are developing apps for the
>Sailfish OS).

Sailfish OS become VERY popular in Russia and in Latin America, and for people who wants their data and communication be secure. Market in Russia growing very fast, Sailfish OS devices are hits of sales, leading universities created courses for Sailfish OS, government certified
it for corporate and government use and since 2019 all mobile applications from national software list (government and corporate use) should work in Sailfish OS (according to import replacing law all applications should be Russian-native and secure).

Best regards,
Linked in  https://www.linkedin.com/in/alekseykontsevich

03.04.2018, 13:13, "Mitch Curtis" <mitch.curtis at qt.io<mailto:mitch.curtis at qt.io>>:
> Hi Alexey.
> The controls look nice, but my concern is how relevant the Silica style is these days (in the context of how many people are developing apps for the Sailfish OS).
> For each style we currently have, I would justify their inclusion into qtquickcontrols2.git for the following reasons:
> Default - extremely high performance at the cost of a very basic appearance. Tries to be neutral in terms of looks.
> Fusion - bridges the gap in terms of Desktop styling. An additional/more specific point that I think it is important here is that the controls are more compact (smaller) than any other pre-built style we offer (the Material style has a dense variant now, but that’s still larger if I recall correctly).
> Imagine - puts power in the hands of designers, frees up time for developers.
> Material - very relevant in terms of Android market share. Looks really nice; a good candidate for “non-native” cross-platform apps.
> Universal - relevant in terms of Windows market share.
> As mentioned, I do think the Silica controls look nice, but that’s the only justification I could think of for including them in qtquickcontrols2.git. For each new style we add, the maintenance cost increases, so this is something that we need to consider.
> What is your opinion on this?
> Cheers.
> From: Alexey Andreyev [mailto:yetanotherandreyev at gmail.com<mailto:yetanotherandreyev at gmail.com>]
> Sent: Friday, 23 March 2018 8:49 PM
> To: Mitch Curtis <mitch.curtis at qt.io<mailto:mitch.curtis at qt.io>>
> Cc: development at qt-project.org<mailto:development at qt-project.org>
> Subject: Re: [Development] [Google Summer of Code] [Project Ideas] Qt Quick Controls 2 Sailfish Silica Style
> Thank you Mitch for the feedback!
> I've also tried to record current controls on a real device: https://youtu.be/T-qUZMuTGqw (hope not only 360p will be available soon)
> 2018-03-23 21:55 GMT+03:00 Alexey Andreyev <yetanotherandreyev at gmail.com<mailto:yetanotherandreyev at gmail.com>>:
>> Silica cheat sheet:
>> https://sailfishos.org/wp-content/uploads/2016/06/component_cheatsheet.png
>> Theme cheat sheet:
>> https://sailfishos.org/wp-content/uploads/2016/06/theme_cheatsheet.png
>> Icon reference:
>> https://sailfishos.org/wp-content/uploads/2016/06/icon_reference.png
>> code example:
>> https://gist.github.com/jaymzznoori/a980314f8248e0a1e7904c29c88ecdf3
>> Youtube video with timestamp for platform-specific PulleyMenu element example: https://youtu.be/jByW7UNmbxU?t=11m38s
>> 2018-03-23 21:40 GMT+03:00 Mitch Curtis <mitch.curtis at qt.io<mailto:mitch.curtis at qt.io>>:
>>> Hello.
>>> Are there any screenshots of it? I read that entire page and the Silica docs but couldn’t see anything.
>>> Cheers.
>>> From: Development [mailto:development-bounces+mitch.curtis<mailto:development-bounces%2Bmitch.curtis>=qt.io at qt-project.org<mailto:qt.io at qt-project.org>] On Behalf Of Alexey Andreyev
>>> Sent: Friday, 23 March 2018 5:39 PM
>>> To: development at qt-project.org<mailto:development at qt-project.org>
>>> Subject: [Development] [Google Summer of Code] [Project Ideas] Qt Quick Controls 2 Sailfish Silica Style
>>> Hello!
>>> My name is Alexey, what do you think about Silica Style for QQC2 as a gsoc project?
>>> I have some notes here: http://aa13q.ru/qqc2-silica-style-en/
>>> and want to create a proposal.
> ,
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