Hi,
I have been looking for a clean way of updating my widget's css properties programmatically at runtime. Basically I have a css animation which gets its properties from variables in my C code. The current (working) approach I came up with is to benefit from the cascade and generate a whole new css definition for the animation every time my variable changes and use GtkStyleProvider.load_from_css (my_new_animation_css_spec). For this to work I need to set the "animation-name" to have a new and unique value, overwriting the previous one. This doesn't sound efficient at all. My desire is to get the "animation" property of my class, and be able to update only what changes in it. It can already be done for some properties via GtkStyleContext.get_property. All in all, is there a better way of doing this? Will there ever be? Thanks, Felipe. _______________________________________________ gtk-app-devel-list mailing list [hidden email] https://mail.gnome.org/mailman/listinfo/gtk-app-devel-list |
Hi Felipe;
You probably wanted to send this email to gtk-devel-list, not gtk-app-devel-list. On Sat, 25 Nov 2017 at 12:41, Felipe Borges <[hidden email]> wrote: > Hi, > > I have been looking for a clean way of updating my widget's css > properties programmatically at runtime. > > Basically I have a css animation which gets its properties from > variables in my C code. > > The current (working) approach I came up with is to benefit from the > cascade and generate a whole new css definition for the animation > every time my variable changes and use GtkStyleProvider.load_from_css > (my_new_animation_css_spec). For this to work I need to set the > "animation-name" to have a new and unique value, overwriting the > previous one. This doesn't sound efficient at all. > > My desire is to get the "animation" property of my class, and be able > to update only what changes in it. It can already be done for some > properties via GtkStyleContext.get_property. > How would you even do this? You would need to read the current style state and then resubmit it as a whole, because you cannot know how changing your style for your animation will end up in your computed style. All in all, is there a better way of doing this? Will there ever be? > Not for gtk3, and I’m pretty sure even for gtk4 it would be kind of weird. Ciao, Emmanuele. -- https://www.bassi.io [@] ebassi [@gmail.com] _______________________________________________ gtk-app-devel-list mailing list [hidden email] https://mail.gnome.org/mailman/listinfo/gtk-app-devel-list |
In reply to this post by Felipe Borges
Hello,
Can you please share a link to your current approach? Doesn't sound efficient but makes sense. I'd like to run the code and see the animation in action. On 2017-11-25 14:41, Felipe Borges wrote: > Hi, > > I have been looking for a clean way of updating my widget's css > properties programmatically at runtime. > > Basically I have a css animation which gets its properties from > variables in my C code. > > The current (working) approach I came up with is to benefit from the > cascade and generate a whole new css definition for the animation > every time my variable changes and use GtkStyleProvider.load_from_css > (my_new_animation_css_spec). For this to work I need to set the > "animation-name" to have a new and unique value, overwriting the > previous one. This doesn't sound efficient at all. > > My desire is to get the "animation" property of my class, and be able > to update only what changes in it. It can already be done for some > properties via GtkStyleContext.get_property. > > All in all, is there a better way of doing this? Will there ever be? > > Thanks, > Felipe. > _______________________________________________ > gtk-app-devel-list mailing list > [hidden email] > https://mail.gnome.org/mailman/listinfo/gtk-app-devel-list gtk-app-devel-list mailing list [hidden email] https://mail.gnome.org/mailman/listinfo/gtk-app-devel-list |
In reply to this post by Emmanuele Bassi
Hi,
On Sat, Nov 25, 2017 at 2:38 PM, Emmanuele Bassi <[hidden email]> wrote: > Hi Felipe; > > You probably wanted to send this email to gtk-devel-list, not > gtk-app-devel-list. urgh, sorry! > How would you even do this? You would need to read the current style state > and then resubmit it as a whole, because you cannot know how changing your > style for your animation will end up in your computed style. > >> All in all, is there a better way of doing this? Will there ever be? > > > Not for gtk3, and I’m pretty sure even for gtk4 it would be kind of weird. Sure. My understanding is that this would be out of the scope of the toolkit. But maybe there was an API for that. Thanks for clarifying it! > > Ciao, > Emmanuele. > -- > https://www.bassi.io > [@] ebassi [@gmail.com] _______________________________________________ gtk-app-devel-list mailing list [hidden email] https://mail.gnome.org/mailman/listinfo/gtk-app-devel-list |
In reply to this post by makepost
Hello,
On Sat, Nov 25, 2017 at 5:03 PM, - <[hidden email]> wrote: > Hello, > > Can you please share a link to your current approach? Doesn't sound > efficient but makes sense. I'd like to run the code and see the animation in > action. Yes. It is being used in GNOME Usage performance panel https://gitlab.gnome.org/GNOME/gnome-usage _______________________________________________ gtk-app-devel-list mailing list [hidden email] https://mail.gnome.org/mailman/listinfo/gtk-app-devel-list |
Free forum by Nabble | Edit this page |