View system usage with lower left origin
View system usage with lower left origin
- Subject: View system usage with lower left origin
- From: Ron Wagner <email@hidden>
- Date: Thu, 12 Jun 2003 19:35:29 -0400
Hello,
I am new to Cocoa and have a basic question regarding usage of the view
system. I have a window that will contain several similar views which I
want to add disclosure triangle controls to, similar to the Apple
System Profiler application. Since the origin is at the lower left
corner, seems like I can't just set the size of the containing view to
just expose the triangle control and the title. The whole origin at the
bottom left corner instead of the top left corner seems weird to me
since layouts tend to naturally originate from the top and flow
downwards.
So how do seasoned cocoa developers handle things like this? Would you
set the height of the containing view to a size just exposing the
triangle control with title and apply a transformation matrix to the
view to move it down into position? I've seen some example applications
that have their content stick to the lower left corner when the window
is enlarged. How do you get stuff to stick to the top of the window?
Any other general tips or tricks regarding upside down coordinate
systems would be appreciated. I realize that it is the postscript/pdf
model, but it doesn't seem natural for user interfaces.
Also, is there anything equivalent to the MacApp adorners in Cocoa?
Thanks,
Ron Wagner
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