On Oct 18, 2008, at 8:04 PM, DKJ wrote:
I am unable to understand the relation between the frame and the bounds of an NSView. I've read the documentation in the View Programming Guide, and also played around with them myself in a practice project. In the latter, I tried drawing their rectangles in different colours, but couldn't get both to display. So I'm still at a loss. Can someone point me towards other documentation that might get through the fog?
Do make sure you've read this: http://developer.apple.com/documentation/Cocoa/Conceptual/CocoaViewsGuide/Coordinates/chapter_3_section_3.html#/ /apple_ref/doc/uid/TP40002978-CH10-SW9
The -frame and -bounds are two properties of an NSView, both rectangles. The frame is the the position of the view within its superview, thus, if you add a subview "B" to a view "A" and make it's rect {0,0,100,100}, it'll be a 100x100 box in the lower-left corner of "A". The bounds give the visible rectangle of the NSView in its own coordinate system; by default it has an origin of (0,0) and the same dimensions as the frame you gave when you initialized it, but it can be modified later. Thus, the bounds of view "B" can be {0,0,200,100} and this would cause the content of view "B" to be scrunched 2x from left to right.
When you give drawing commands in drawRect, all coordinates you give are with regard to the *bounds* of the view. SO, if you took the hypothetical view "B" above and stroked from (0,0) to (100,0), the line would only go halfway across the view (50 pixels), as its bounds.size.width are 2x of its frame.size.width.
Hope this helps. Post your code, as you might have the rects all right but may be doing something else incorrectly.
Jamie Hardt The Sound Department http://www.soundepartment.com/ http://www.imdb.com/name/nm0362504/ _______________________________________________ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to [EMAIL PROTECTED]
