[haiku-development] Re: Feature request. Progress view in Tracker and in some other app.

  • From: "Dustin Howett" <alaricx@xxxxxxxxx>
  • To: haiku-development@xxxxxxxxxxxxx
  • Date: Mon, 27 Oct 2008 16:34:54 -0400

2008/10/27 Stephan Assmus <superstippi@xxxxxx>:
>
> It's a nice feature, but the vector icons have made this a bit harder to
> do. Or you could say they enforce a more generic approach. In BeOS,
> NetPositive would simply load the original icon bitmap and then write a new
> icon where it composited the progress bar on top. Since Tracker watches
> icon changes, it automatically updates the icon in any window that happens
> to show the downloaded file. In Haiku, it could still work the same,
> although NetPositive would now need to know how to compose a progress bar
> shape on top of a vector icon. There is currently no public API for the
> internal objects of a vector icon. But, if there would be an agreed upon
> standard for writing attributes that describe a partial file, then Tracker
> could take care of compositing a progress bar on top of icons which it
> displays, after having converted the original vector icon to a bitmap at
> the target scale. This way, all applications could simply write the
> attribute that describes the progress of a partial download, and the code
> that composes a progress bar on top of the icon would reside in Tracker
> (for example reusing the code for the volume bars). This approach has one
> drawback, which is that other applications which retrieve the icon would
> not get a progress bar. This could then be fixed by placing the progress
> bar compositing code into BNodeInfo::GetTrackerIcon(). (Which Tracker
> itself should be changed to use instead of it's own implementation...)
>

This is exactly the approach I was thinking of - attributes!
+1 from me!

- Dustin L. Howett

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