On Aug 12, 2011, at 6:23 PM, Nick Zitzmann wrote:
> I've got a problem that has been driving me nuts all day. I tried searching
> around and didn't see anything that helped.
>
> I have a series of non-contiguous NSTextViews (not to be confused with
> non-contiguous NSLayoutManager layout), with each text view representing a
> single page, and each text view has one NSTextContainer. There is one
> NSLayoutManager and one NSTextStorage behind each text view. When each text
> view & container is created, it is set to a size equal to the size of a page
> minus some margins.
>
> I've found out that the last line of a text view can get cut off at the
> bottom, so after the text storage is filled out, I wrote this loop to lay out
> each text container and resize the text view to be smaller than the cut-off
> text:
>
> for (i = 0UL ; i < self.layoutManager.textContainers.count ; i++)
> {
> NSTextContainer *tc = [self.layoutManager.textContainers
> objectAtIndex:i];
> NSTextView *tv = tc.textView;
> NSRect usedRect;
> NSSize containerSize;
>
> (void)[self.layoutManager glyphRangeForTextContainer:tc]; //
> force layout to occur now
> usedRect = [self.layoutManager usedRectForTextContainer:tc];
> containerSize = tc.containerSize;
>
> if (usedRect.size.height > containerSize.height) // if true,
> then we're cutting off some text
> {
> NSRect tvFrame = tv.frame;
>
> tvFrame.size.height =
> containerSize.height-(usedRect.size.height-containerSize.height);
> [tv setFrameSize:tvFrame.size];
> }
> }
>
> That had the effect of not displaying any cut-off text, but there's a problem
> - the cut-off text is still "laid out" in the view in a place where users
> won't see it. I was expecting this to push the now-invisible line off to the
> next text container/view the next time layout is performed, but it doesn't
> happen. If I make the height one or two pixels smaller, then the invisible
> line does bounce to the next text view, but then text gets cut off once again.
>
> So how do I prevent NSLayoutManager from drawing cut-off glyphs in a series
> of non-contiguous text views? Yes, I did make sure that the text container's
> size tracks the text view's size.
I don't follow what you mean by non-contiguous text views. Could you describe
the setup again? IIUC each textview has its own layout manager/text
container/text storage. So what is the connection between the text views, and
how does text jump from one text view to the next? Are any of the text views
embedded in scroll views?
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