Re: [SOLVED] Scrolling behavior ala Preview
Re: [SOLVED] Scrolling behavior ala Preview
- Subject: Re: [SOLVED] Scrolling behavior ala Preview
- From: "I. Savant" <email@hidden>
- Date: Thu, 20 Jul 2006 09:05:55 -0400
There's also this: http://www.cocoadev.com/index.pl?
CenteringInsideNSScrollView
--
I.S.
On Jul 20, 2006, at 9:04 AM, David Hoerl wrote:
[for the archives]
The way to get Preview style "scrolling" of images, where images
that are smaller than the visible rectangle get centered in the
visible rect is as follows:
- in your CustomeView drawRect method, look to see if the actual
image rectangle is smaller than the visibleRect of the superview
(which is of course the contentView).
- if so, for that axis only, expand the frameRect of the
CustomeView to fit size of that axis of the visibleRect. Save the
old frameRect.
- use either a NSAffineTransform, or change the origin of the
boundRect, so that the undrawn space will be evenly split on either
side of the image.
- draw the image
- restore the original frameRect.
[Note - may be better ways to do this, but this way works.]
David
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