I am drawing using core graphics. I tried turning copiesOnScroll and this didn't seem to help.
I'll gladly write a feedback report but I'm not able to reproduce this so I can't give an xcode project that will reproduce this... Isn't that a requirement? BTW, perhaps you know: Are there no release notes for app kit with Catalina? All I can find are very general notes without mention of any specific API. I could not find, for example, any mention of the deprecation of copiesOnScroll and what it means (is is not always on, always off etc) Thanks, Eyal > On 16 Dec 2019, at 16:07, Gary L. Wade <garyw...@desisoftsystems.com> wrote: > > If you’re not involving a higher level class like NSTextView or a medium > level one like CoreText, it sounds like you might be going all the way down > to CoreGraphics? If so, you might find your disparity between your system and > your users in things like retina choice for a particular display and changes > with respect to layers, especially things like the copiesOnScroll. If these > don’t lead you to a solution where you say, “Oh, I really should’ve done this > rather than that,” (20/20 hindsight) then write up a feedback report and add > its URL here. > -- > Gary L. Wade > http://www.garywade.com/ > >> On Dec 16, 2019, at 1:03 AM, Redler Eyal via Cocoa-dev >> <cocoa-dev@lists.apple.com> wrote: >> >> Thanks! >> I don't use CoreText or NSTextView. I pretty much ruled out RTL vs LTR >> issues since this is showing up in documents containing either and both. I'm >> also unable to imagine how some text drawing code could produce such >> artifacts as splitting a subview in the middle. >> (http://eyalredler.com/stuff/catalina_glitch.png) >> >> Eyal >> >> >> >> >>> On 14 Dec 2019, at 21:20, Gary L. Wade <garyw...@desisoftsystems.com> wrote: >>> >>> I see from your personal web site you know Hebrew. Is it possible the >>> affected/non-drawing pages contain some RTL text while those that don’t >>> only contain LTR? I have seen some bugs with RTL text within NSTextView >>> where the text was/wasn’t drawing in a similar manner. Do you operate at a >>> CoreText level? >>> -- >>> Gary L. Wade >>> http://www.garywade.com/ >>> >>>>> On Dec 14, 2019, at 6:17 AM, Redler Eyal via Cocoa-dev >>>>> <cocoa-dev@lists.apple.com> wrote: >>>> >>>> Hi All, >>>> >>>> I'm getting reports from users complaining about a strange display issue >>>> on Catalina with my app. >>>> My app is a word-processor (not based on the cocoa text system) whose main >>>> display shows the pages of the document. Every page is a separate view and >>>> all the pages are subviews of one big view which resides inside a scroll >>>> view. >>>> >>>> The problem is that when with some documents, sometimes, when the user >>>> scrolls down the document, some pages are not drawn or even partially >>>> drawn. When the user clicks the place where the page is supposed to >>>> appear, it shows up. >>>> Another interesting bit is seems that while the scroll view background is >>>> drawn, the document views (the view containing the page views) drawRect is >>>> not called or at least not taking effect, I can tell because the pages on >>>> this view cast a shadow which is drawn by drawing blank squares on the >>>> document view with a transparency layer. >>>> Last bit of info, copiesOnScroll set to NO for this view and I see that >>>> this property is deprecated on Catalina. >>>> >>>> So far I'm struggling with this for a couple of weeks, I wasn't able to >>>> reproduce this at all on my machine. >>>> I'm really desperate for an answer and while I'm not expecting anyone here >>>> to provide me with one (wouldn't object, of course :-)) I would love if >>>> people reading this might try to speculate to the causes of this or >>>> perhaps if you have any direction as to what to test on my users machines >>>> in order to be able to reproduce this. >>>> >>>> Thanks >>>> >>>> Eyal Redler >>>> ------------------------------------------------------------------------------------------------ >>>> "If Uri Geller bends spoons with divine powers, then he's doing it the >>>> hard way." >>>> --James Randi >>>> www.eyalredler.com >>> > _______________________________________________ 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: https://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
