Weird behavior with UITextLayer on OS X 10.8

[silvermana]

Has anyone tested their Chameleon apps on 10.8? I have and UITextFields and UITextViews are not working correctly.

If I build the app with the latest 10.7 SDK and run it on 10.8:

1. UITextFields do not render any text.
2. UITextViews work correctly

If I build the app with the latest 10.8 SDK and run it on 10.8:

1. Neither worked at all at first (wouldn't become first responder), but after mucking with some of the hit testing code I got them mostly working.

Reading the 10.8 release notes from Apple makes me think the changes they made to NSView/CALayer is messing with Chameleon. Before I investigate for hours I wanted to see if anyone else had a solution already.

[BigZaphod]

Set the project's base SDK to 10.7 for now to avoid some of this for now unless you can find an elegant way to fix it. I've looked into a bit and it seems like every time I feel like I've almost nailed it down, I find another case that's breaks it. Very irritating.

[silvermana]

Yeah, I'm just worried Apple might drop a release date on 10.8 next week. If you want to share what changes you are making in a public branch I'm happy to help you test things.

[sergiosilva]

I think I fixed it on my fork. The only problem I was having was that the text layer seemed flipped. I solved it by adding

//deal with 10.8 geometry differences.
self.geometryFlipped = [[[[containerView window].screen UIKitView] layer] isGeometryFlipped];

to UITextLayer.m

- (void)addNSView

[rafcabezas]

I can confirm that sergio's solution works for me as well.

[jeremy-w]

The patch by @sergiosilva seems to lead to UIText{View,Field}s displaying flipped for Lion users. It does seem to fix things for 10.8 users, though.

[sergiosilva]

I did note that using a placeholder text in a UITextField still looked flipped for Lion users, but it was the only case, entering new text was rendered correctly, do you have others?

On 27/02/2013, at 21:45, "Jeremy W. Sherman" [email protected] wrote:

The patch by @sergiosilva seems to lead to UIText{View,Field}s displaying flipped for Lion users. It does seem to fix things for 10.8 users, though.

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Reply to this email directly or view it on GitHub.

[jeremy-w]

Yes, I was watching live text input go in flipped. It was very strange. My current approach is just "punt and test for something new on OS X 10.8". Looks like NSColor now has colorWithCGColor:, and NSPageController is wholly new, so testing for those should let me know whether we're getting the 10.8 weirdness or the 10.7 weirdness.

[sergiosilva]

Think your are missing this patch also on my fork:
sergiosilva@af1529f

With this only the placeholder text should still be flipped. Never investigated that case properly... Let me know if this helps.

[jeremy-w]

Ah yes, I just had the code you inlined earlier. But version-sniffing turns out to work fine, and no flipping. Here's what I ended up adding to -[UITextLayer addNSView]:

    /* OS X 10.8 changes something about layer geometry.
     * This fixes text drawing problems in UITextField/View on OS X.
     * See <URL:https://github.com/BigZaphod/Chameleon/issues/85>.
     *
     * But doing this seems to flip the text for 10.7 and previous.
     * So we version sniff. */
    if ([NSColor respondsToSelector:@selector(colorWithCGColor:)]
        && NSClassFromString(@"NSPageController") != Nil) {
        UIKitView *hostView = [[containerView window].screen UIKitView];
        self.geometryFlipped = [[hostView layer] isGeometryFlipped];
    }

[sergiosilva]

Actually, I think that I also had some issue with some UILabels that required the patch I posted. But hey, if it works for you with just that patch to UITextLayer great! I was going to ask if your patch worked also with placeholder text but now that I think about it, support for placeholder text in UITextFields is not on the master repo so its an issue you won't run into...

[michaelmelanson]

If anyone is having troubles with building against the OS X 10.8 SDK, I have put several commits in my fork of the project at https://github.com/michaelmelanson/Chameleon/tree/master which fix the issues we encountered getting our application to work.