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iced-rs
Is there are any way to programmatically change the opacity of a widget?
Depends on what exactly you are asking for. If you want to just take a whole widget and make it have an opacity then no. But if you are just looking for a button with a transparent background they yes absolutely, see the styling example.
Oh I'm sure that it will be implemented eventually, but I don't believe that it is even on the roadmap, so I wouldn't expect it anytime soon.
Why do you want this? I am sure there is some way to get a similar effect with what is already a part of iced?
I want to have a welcome screen in my application with my logo on it. I want the logo to appear gradually (gradually increasing the opacity). But I also need that when I click on the screen, the logo appears immediately, without waiting.
Later, I will need the ability to drag images around the screen and ideally they would be semi-transparent while dragging.
Oh that is going to be tough. Iced doesn't support animations yet, so you would have to manually track and update the opacity too.
Iced has very basic support to stacking widgets, so you would have to place a Container ontop of the image widget (See the Toolltip or Picklist widgets to stack a containers). Then you would have to subscribe to time::every to update the Container style. Performance wouldn't be that great either. Then on click you would set the opacity to the last setting and remove the subscription.
Image dragging would require using the canvas widget. If it is possible at all. I haven't seen anyone build something with an image inside of a canvas though...
Yeah, I already did all code related to subscription, the only thing left is opacity attribute, that I can't find(
Ya there is no opacity attribute. You will have to overlay a Container above the image that has the same background color as the background behind the logo.
Container background colors support alpha values so you can set the background of that to have an opacity, thus giving you the desired effect.
I see, that would probably work for me. Thanks for help!
Although, I still hope that this issue will be added to the milestones.
Yep. I'm sure it will be once Hecrj sees this issue. He is good at that. He is probably just busy now :smiley: