So you are writing a style for the QPaintEngine. What if you have a OpenGL back end or some other back ends where your descriptions does not fit that well any more? I have seen much more complicated things written in an abstract way, so it should be possible. And I haven't said that you should use CSS. Some custom DSL would quite handy. Actually I don't care about that fancy styles, they looks too baroque to me but I want something like Flatpak so I don't have work with outdated packages! But that are my priorities. [?]
________________________________ From: Matthew Woehlke <mwoehlke.fl...@gmail.com> Sent: Thursday, November 24, 2016 5:36:04 PM To: development@qt-project.org Cc: Marco Bubke Subject: Re: Basing Qt Creator Coding Style on C++ Core Guidelines? On 2016-11-22 06:25, Marco Bubke wrote: > On November 22, 2016 08:17:57 Thiago Macieira wrote: >> Theming and styling is a complex operation. It's not just "propagating >> values". Reading config files will at best get you the right font, correct >> icon >> set, and somewhat correct colours. But gradients, shapes, complex dialogs >> will >> not work. > > I don't see the problem to describe it in text, like CSS is doing. Clearly you have never actually written a QStyle. Something like Oxygen involves *multiple* gradients just for the window background. Don't forget inline SVG's for elements like the tree expanders and the 'icons' on scroll bar buttons, combo boxes, spin boxes... and that's not even the *hard* stuff. Try specifying a tab bar in CSS. You have text margins, margins between the tabs, possible complex shapes of the tabs themselves (all of which need complicated gradients for shading)... The current version of the Oxygen style (well, the KDE4 version anyway) represents *years* of work, and even then I would not say it is perfect. Take a look at http://pcdesktops.emuunlim.com/pictures/skins/wb/macosx-aqua-bjb.gif and explain to me how to replicate that in CSS. Start with the scroll bar handle. *Then* I will believe you when you say there is no problem describing widget style in CSS. That said, there *is* a textual language that can be used to adequately describe a style. That language is commonly known as "C++". -- Matthew
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