* Noah Stein <noah@acm.org> [2004-12-29 18:28]:
-----Original Message----- From: boost-bounces@lists.boost.org [mailto:boost-bounces@lists.boost.org] On Behalf Of Alan Gutierrez Sent: Wednesday, December 29, 2004 4:58 PM To: Christopher D. Russell Cc: boost@lists.boost.org Subject: Re: [boost] Re: [gui] The Big Picture
As far has hassles go, I think that most object libraries are so frame/widget oriented, they leave almost all the real work to the application developer.
I don't see that you've proposed anything that would leave frames behind. Isn't the frame still the fundamental unit in your view? Aren't layout managers objects that position and size some frames inside of other(s) or have I misunderstood the nature of what you have been describing?
When I hear layout manager, I think of Delphi or Swing. A layout arranges components on a form. A form is a fixed set of controls within a window of fixed size, or that has a simple resize strategy, since the number of controls does not change. Frames + controls + layouts = Power Builder, Delphi, Visual Basic. Then you have a few frameworks that up the ante with a grid "control", but that is a misnomer, because a grid "control", where it is found, imposes a lot of requirements on the UI library. The library must now implement components that can take part in a grid, there can be many, they can be clipped. Where you see a grid "control", you see a library that has provided it's own set of UI widgets. This is Swing and Delphi VCL. A grid is not a "layout", it is a very complicated rendering engine, and it requires it's own components. I'm talking about putting "layout managers" in their place, *form* layout managers, one strategy to render the contents of a window, and looking at the three other strategies, grid *renderers*, document *renderers*, canvas *renderers*. If by frame, you mean the window frame, is the same fundumental unit as a label, no, because that breaks down if you try to say that a window is the same fundumental unit as a paragraph. If you see a form label and a window as the same beastie, you're making the Win32 GDI mistake. -- Alan Gutierrez - alan@engrm.com
-- Noah
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