Apple Sample Code WWDC 2010 session 114
Hi folks I’m desperately trying to track down some Apple sample code that was featured at the WWDC 2010, related to session 114, entitle d ‘Advanced Cocoa Text Tips and Tricks. The video is available on Apple’s Developer forum and iTunes University, but the sample project used in the video is not available on the site. Nor has Google returned me any successful hits. I think the actual Xcodeproj file is called ‘WWDC_2010_114’ and includes a number of classes I’m desperate to get hold of (I’ve tried recreating as much as I can from the video, but alas I’m not skilled enough in Cocoa yet and I can’t figure out the bits I’m missing). The code pertains to implementing editor features similar to those seen in Xcode like text folding, line numbers and in-line contextual menus. I’ve seen other code for line numbers elsewhere (Noodlesoft’s stuff here: https://github.com/MrNoodle/NoodleKit) but this is not sufficient for what I’m after. I’d really appreciate it if anyone could provide a link to where the Apple sample code might be available, or (long shot!!!) a copy if you happened to have been an attendee at WWDC 2010 and downloaded yourself! Phil ___ 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
NSCustomImageRep and NSImage setSize
Hello List, I am trying to get an NSCustomImageRep to properly “react” (e.g. redraw) after a NSImage setSize call. I am writing a NSCustomImageRep class for a resolution independent image format (e.g. like NSPDFImageRep and NSEPSImageRep). However, I can’t get it to properly account when the size is adjusted through NSImage setSize. So long as I call setSize before the first time the image is drawn, everything works perfectly, but any subsequent calls to setSize don’t seem to cause my imageRep to redraw for the new size. A call to NSImage recache doesn’t seem to have any effect, and I am especially confused because the documentation for NSImage setCacheMode states that “NSPDFImageRep and NSEPSImageRep classes use theNSImageCacheAlways mode” How can the image reps be always cached and yet respond appropriately (e.g. maintain full resolution) when NSImage setSize is called? Thanks in advance! -Mathew Eis ___ 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
Resolving a file reference from the iTunes plist
Hello gang, I noticed upon upgrading to iTunes 11, that iTunes has changed the manner in which it remembers the path to its library. This is a bummer, as I wrote myself a script to juggle my multiple iTunes Libraries, and it does''t work anymore. In previous versions, iTunes stored its library location as an 'alias ref', in the iTunes plist, with the key 'alis:1:iTunes Library Location'. In the new version, iTunes 11, it stores the location with the key 'RDoc:132:Documents' using some format is a mystery to me. Is it using the 'bookmark data' format? I gather Apple has positioned 'bookmark data' as a replacement for old-style file aliases. I've had no success interpreting the data as 'bookmark data' so far. If it's 'bookmark data' I ought to be able to read it with a Python script using NSURL.URLByResolvingBookmarkData_options_relativeToURL_bookmarkDataIsStale_error_ but the result is always null. This makes me suspect it's not bookmark data after all. Does anyone here have any idea as to what the mystery format is? Thanks, Charles PS: I've posted a longer explanation here, too: http://stackoverflow.com/questions/19663069/how-to-switch-to-a-new-itunes-library-location-programmatically ___ 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
NSScrollView and autolayout
I have seen a previous discussion about this topic in the archives but I seem to be having a new problem related to Mavericks. I have a View Based NSTableView set as the document view of an NSScrollView with everything using auto layout. After upgrading to mavericks my scrollview no longer scrolls the body, it seems to know their is additional content waiting to be displayed, as when you resize the window the correct scroll bar appears briefly, but as soon as you stop resizing, the scrollview clips the tableview to the size of the scroll view’s container. I used one of my dev program support tickets for help, but was informed it was a known issue with no work around, I am hoping someone here might have experienced this or know some way to get it to work? ___ 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
Re: Mutually exclusive item filtering-comparing
Let’s assume the data source sorts items with one handed weapons at the top of the list and two handed weapons at the bottom. Also assume the data source knows the row index of the first two handed weapon. Now we can test for one or two handed weapons by comparing the row index to that of the first two handed weapon. If a user selects a one handed weapon in the left hand, then change tableView:numberOfRowsInSection: for the right hand table to show only one handed weapons. If the user has chosen a two handed weapon in the left hand, then change tableView:numberOfRowsInSecton: for the right hand table to show zero. This can be done without any looping at all. Does this help? -jwd // Joseph W. Dixon On Nov 5, 2013, at 12:17 PM, Chris Paveglio chris_paveg...@yahoo.com wrote: What is the most efficient way to compare a list of mutually exclusive items? I know this isn't exactly Cocoa/iOS specific. I have a table that needs to disable certain rows based on what other rows are selected. I have several objects, let's say weapons in a game. Such as a bow and arrow, a rifle, a bazooka. A character can use any of the objects, but some can't be used together. A bazooka is too big and requires 2 hands to carry so you can't select both a bazooka and rifle at the same time. You can select bow arrow and rifle, but if you select both of those, you can't take the bazooka too. I hope you get the idea. My exclusions array has many simple objects. Each object has 3 ivars- (int)itemID1, (int)itemID2, (string)isMutuallyExclusive (not my design but could be changed if there is a better way). The idea I have is whenever a row is selected, I will take the itemID of that item, then iterate with every other itemID in the table- then I do an iteration on every object in the exclusions array. If the selected row itemID is in the exclusion object, and current row itemID being compared are both in the exclusion object, I can get it's exclusion (non-exclusive items won't be in the list). So, repeat with 100 items in the table, each table row comparing against the exclusion list which has over 100 entries. It could result in up to 10,000 comparisons getting tested until the exclusion is found or exhausted. It seems extremely process intensive. Is there a better way, or some basic concept I might be missing? Thanks, Chris ___ 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/jwdixon%40gmail.com This email sent to jwdi...@gmail.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
Re: NSCustomImageRep and NSImage setSize
On 30 Oct 2013, at 5:14 am, Mathew Eis mat...@eisbox.net wrote: I am trying to get an NSCustomImageRep to properly “react” (e.g. redraw) after a NSImage setSize call. My understanding is that the size property of an image is not directly related to the sizes of the reps within it. Initially, the reps that the image generates itself (for caching, say) are based on the image size, scaled according to the desired resolution of the cache, which is 1x for standard screens, 2x for retina screens. Otherwise the ratio between a rep’s size and the image size defines the resolution of the image, and therefore how it is to be drawn, but there’s no reason that this size change would affect any reps within the image other than the private ones that NSImage maintains for caching. I assume that NSImage has its own way of identifying which reps are part of its private cache, but any reps that you add using -addRepresentation: are NOT part of its private cache. AFAICS, there’s no way to force NSImage to use an externally added rep as an internal cache. I don’t really see why you’d want to do that anyway, or why you need to redraw your rep if the NSImage size changes - especially if it’s resolution independent. When the NSImage is drawn, its size tells you how to scale your rep to suit, but it doesn’t affect the content of your rep at all. —Graham ___ 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
Re: Apple Sample Code WWDC 2010 session 114
I have now been fortunate to receive a copy of the code from a list member. I’m also grateful to several others that also kindly offered me the code. I’d been banging my head on the desk over this problem for nearly a week. It took 28 minutes for the list to answer my wishes. It took me about ten minutes to scan the code and see where I’d been going wrong. You folks are awesome! :)) Thanks again to all who responded. :) Best Phil On 5 Nov 2013, at 19:40, 2551 2551p...@gmail.com wrote: Hi folks I’m desperately trying to track down some Apple sample code that was featured at the WWDC 2010, related to session 114, entitle d ‘Advanced Cocoa Text Tips and Tricks. ___ 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
Re: SKIndexAddDocument crashing
FWIW it crashes on mine too (not too surprising, same Xcode and OS). It doesn’t crash if you replace the crashing line with: SKIndexAddDocumentWithText(searchIndexFile, doc, NULL, false); I don’t know if that’s any use to you (never used the framework). I think it’s failing because it’s not recognising the file type as text (see the docs - option click the function). It doesn’t crash if you supply the mimeTypeHint: SKIndexAddDocument( searchIndexFile, doc, (__bridge CFStringRef)@txt, false ); … On 07 Nov 2013, at 12:18, Eric Gorr mail...@ericgorr.net wrote: The values are all valid. There is not much more to the sample test project then the code I posted if you wanted to check this out yourself. The sample project is just the default cocoa app. At least one other person did and saw the same behavior Sent from my iPhone On Nov 7, 2013, at 12:12 AM, Jerry Krinock je...@ieee.org wrote: Forgive me if you’ve already done this, Eric, but you didn’t say if you did this… When a function in an SDK crashes, the first thing you should do is check the parameters you’re feeding it. In this case, are your local variables searchIndexFile and doc valid? At least, not NULL? ___ 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/mailist%40ericgorr.net This email sent to mail...@ericgorr.net ___ 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/blue.buconero%40virgin.net This email sent to blue.bucon...@virgin.net ___ 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
Re: Why IBOutlet don't work under NSTableCellView?
Hello, I'm just beginning to explore view-based tableviews myself. When I build and run this project, Xcode shows two warnings of interest: - Outlet 'ref' of 'My Image' is connected to 'My Reference,' an invalid destination (Objects inside view based table views may only be connected to the table view's delegate.) - Outlet 'delegate' of 'Text Field - Table View Cell' is connected to 'My Reference,' an invalid destination (Objects inside view based table views may only be connected to the table view's delegate.) The linked tutorial, below, has helped me a great deal with regard to view-based tableviews. http://gentlebytes.com/blog/2011/08/30/view-based-table-views-in-lion-part-1-of-2/ Hope that helps! -- Bryan Vines On Oct 30, 2013, at 4:49 AM, 周章林 zhanglin.z...@gmail.com wrote: Hi, all, I am trying to use NSTableView in our project, and I customized class which inherit NSImageView, that's MyImage. In MyImage, I declared a property (IBOutlet) ref. Then I insert this customized view to NSTableCellView in Interface Builder, and I connect ref with a customized class-MyReference object . The problem is ref is always nil in the MyImage instance. I have tried to set breakpoint in the -[MyImage initWithFrame:] and -[MyImage setRef:], and found the former method is invoked 2 times, but the later only once. Can anybody explain why this happen? And I want to make the ref outlet work, what should I do? I also attached the sample project in attachment. ___ 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
Re: Why IBOutlet don't work under NSTableCellView?
On Oct 30, 2013, at 4:49 AM, 周章林 zhanglin.z...@gmail.com wrote: Hi, all, I am trying to use NSTableView in our project, and I customized class which inherit NSImageView, that's MyImage. In MyImage, I declared a property (IBOutlet) ref. Then I insert this customized view to NSTableCellView in Interface Builder, and I connect ref with a customized class-MyReference object . The problem is ref is always nil in the MyImage instance. I have tried to set breakpoint in the -[MyImage initWithFrame:] and -[MyImage setRef:], and found the former method is invoked 2 times, but the later only once. Can anybody explain why this happen? And I want to make the ref outlet work, what should I do? I also attached the sample project in attachment. tabletest.zip___ 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/cocoadev%40charlessoft.com This email sent to cocoa...@charlessoft.com Views inside view-based table views can't have references, whether through outlets or bindings, with anything but the table view's delegate. If you give your object an outlet to the table's delegate, and then give the table's delegate an outlet to your ref object, then that will work. Charles ___ 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
Re: Why IBOutlet don't work under NSTableCellView?
On Nov 8, 2013, at 8:06 AM, Charles Srstka cocoa...@charlessoft.com wrote: Views inside view-based table views can't have references, whether through outlets or bindings, with anything but the table view's delegate. If you give your object an outlet to the table's delegate, and then give the table's delegate an outlet to your ref object, then that will work. If you think about it, this makes some sense, until you think abut it some more. :) By default, the File's Owner when loading a table view cell or row view is the table view's delegate. So connections to that object will be able to be restored by the nib loading machinery. It's just really confusing that IB shows you all the objects from the top-level nib while editing the embedded nib—it would be much better if the Object Hierarchy were replaced with the contents of the embedded nib. (That would also make it possible to add top-level objects like object controllers to the embedded nib.) Furthermore, the delegate being File's Owner is a *default*, not a *guarantee.* If the sidebar changed to accurately represent the embedded nib, one could connect to the embedded nib's File's Owner proxy and it would work with whatever object is passed to -makeViewWithIdentifier:owner:. I've filed this in the past as rdar://problem/9583635. Feel free to dupe :) --Kyle Sluder ___ 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
How to tell if a file is writable in sandboxed mode?
I’m trying to use -[NSFileManager isWritableFileAtPath:], but when it returns NO, I’d like to know if it’s “no” because the app simply doesn’t have access to this path due to sandboxing, or is it “no because the file doesn’t have write permissions set in its file attributes? Is there a way to discriminate these two cases? Or more generally, is there a way to tell that an app does or does not have access to some file because of *sandboxing* (as opposed to file attributes)? Thanks! ___ 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
Re: NSCustomImageRep and NSImage setSize
Hi Mathew, I think you need to set it to NSImageCacheNever. This turns off all of the internal caching mechanism, so your rep, if it’s the only rep in the image, will always be the one to draw. It’ll only be as pixellated as your implementation allows, which should be not at all, right? —Graham On 8 Nov 2013, at 4:46 pm, Mathew Eis mat...@eisbox.net wrote: Hi Graham, Thanks for the reply… That’s more or less the crux of the issue; I can’t figure out how to make the rep resolution independent”. If I draw it once at, say, 100x100, then I draw it again at 200x200, the second will be pixellated because the NSImage is using a cached (bitmap?) copy of it… If I drew it the first time at 200x200, the cached version has the correct resolution - but it isn’t truly resolution independent because it still seems to be caching a bitmap somewhere. Regards, -Mathew Eis ___ 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
Getting mouse clicks when the main loop is busy
Hi all, I have the need to display a progress dialog while I open a huge file. The file may be opened on the main thread, and the progress notifications are sent synchronously. Since the main thread is blocked doing the file opening work, I force the window to redraw by directly calling its -displayIfNeeded method, and that indeed works as expected. However, I would like to be able to click a ‘Cancel’ button in this window. So, I thought I could just allow normal mouse click events to be handled by calling the -runUntilDate: method of the main runloop. By using a date value of -distantPast, this method shouldn’t sleep and so this occasional tickle of the runloop doesn’t slow down the file opening. Unfortunately, it doesn’t work: the mouse clicks are not received and/or processed (I’m not sure which). The Cancel button is just an ordinary button, and if the dialog is displayed as a window without doing any work, I can click the button as normal. I’ve also tried running the runloop as above, then immediately trying to handle any events for the window directly (which seems unnecessary, but I tried it anyway). That doesn’t help. What’s the proper way to do this? I *can* open the file on another thread and let the main thread run normally, and that’s fine, but I do need a solution that works for when the file is opened on the main thread. —Graham ___ 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
Re: Getting mouse clicks when the main loop is busy
On Nov 8, 2013, at 9:16 AM, Graham Cox graham@bigpond.com wrote: Unfortunately, it doesn’t work: the mouse clicks are not received and/or processed (I’m not sure which). The Cancel button is just an ordinary button, and if the dialog is displayed as a window without doing any work, I can click the button as normal. It’s -[NSApplication run] that is responsible for dispatching events, not NSRunLoop. It sounds like you want to be pumping the event loop yourself. Try using -sendEvent: and -nextEventMatchingMask:untilDate:nil inMode: dequeue:YES. I’ve also tried running the runloop as above, then immediately trying to handle any events for the window directly (which seems unnecessary, but I tried it anyway). That doesn’t help. I don't know if this is the same as what I described above. You shouldn’t have to run the runloop yourself; -nextEventMatchingMask: will run it for you. --Kyle Sluder ___ 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
Re: Getting mouse clicks when the main loop is busy
On 8 Nov 2013, at 11:16 AM, Graham Cox graham@bigpond.com wrote: What’s the proper way to do this? I *can* open the file on another thread and let the main thread run normally, and that’s fine, but I do need a solution that works for when the file is opened on the main thread. With the humblest intention in the world, and admitting I don't know your use case… You seem to suggest that opening the file on the main thread might be unavoidable. Is this because the process of identifying, opening, reading, processing, and closing the file might be confined to a third-party library that isn't thread-safe? I can't imagine another way you couldn't pass a path, URL, or file descriptor into a thread. (I have a limited imagination.) If you're not in that situation, I suggest doing whatever you prudently can to load the file on a background thread every time. It factors your app by cutting your code paths in half, and you don't have to rely on cooperative multitasking to keep up a responsive UI. If you're just filling a buffer or interpreting a stream from a file, and don't need to display partial results other than progress, you're in about the least-hard thread-confinement situation you can have. That's my esthetic. There are excellent developers who use a cooperative runloop with good results. — F ___ 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
Re: Apple Sample Code WWDC 2010 session 114 (2551)
On Nov 8, 2013, at 11:18 AM, 2551 2551p...@gmail.com wrote: I have now been fortunate to receive a copy of the code from a list member. I’m also grateful to several others that also kindly offered me the code. I'm sure there are others interested in this code, if not now than for future reference. Is it available for download anywhere? Thanks. ___ 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
Re: Getting mouse clicks when the main loop is busy
Hi Fritz, Kyle. First off, Kyle is quite right, it’s the -nextEventMatchingMask: I needed. In fact that’s where I started, but didn’t quite get all the pieces lined up. I was only fetching mouse down events, and passing them directly to the button for tracking. That worked, except that the highlighting wasn’t visible, because nothing was given a chance to update the graphics while the button did its tracking. So instead, asking for all events and letting -sendEvent: process them, I had good responsiveness and graphics updates. There were two problems with that approach. First, it was too broad, in that clicks in other windows were being processed which I don’t want - I only need the progress window’s clicks. But If you use the NSWindow variants of the NSApp methods for fetching and dispatching events, first you find the documentation says that you should “never invoke” -[NSWindow sendEvent:] even though it worked more or less fine, but I also found that clicks in other windows were not quite being rejected as I expected, and events seem to queue up gradually killing performance as my file is opened. So, finally I realised that what I really needed was a modal session for the progress, which dequeues events destined for other windows and beeps on clicks that do not target the modal window. Using runModalSession: I get everything I wanted. The more philosophical question is why do this on the main thread? Part of it has to do with keeping my options open - I can use a thread or not. The situation is in fact handling the file read for NSDocument, so setting +canConcurrentlyReadDocumentsOfType: selects whether a thread is used or not. However, I’ve discovered that if you do allow it to use a thread, there are two unpleasant usability side effects. If the file is small and can be read quickly, it really doesn’t make much difference either way whether it’s threaded or not. But if it’s a large file, there may be some time (even minutes) between clicking ‘Open’ in the NSOpenPanel and the document opening its window. During that time, there is no feedback whatsoever that anything is happening. It acts, for all intents and purposes, as if the ‘Open’ click was ignored. Because the app remains responsive, you might try again, and now you have the same file being opened on two threads (unless something takes care to prevent this with NSDocument, I haven’t investigated). The user simply thinks your app is broken. But then, bang, the document windows open unexpectedly at some indeterminate future time. It was trying to mitigate this terrible lack of feedback that motivated having a progress indicator for file opening. But in fact, simply not opening them concurrently and just blocking the main thread while they open is much better from the user’s point of view - they can tell that something is happening, even if they have to wait until it’s done. The app may be unresponsive, but at least it doesn’t seem broken. And having the app responsive while a file is opening is of minimal benefit it seems to me - the user wanted to work on another file, that’s why they opened it - so the time waiting for this file to open on a thread is not time that is likely to be fruitfully spent editing some other file. The other reason, which is more surprising, is that my assumption was that the Versions browser would work better if the documents were opened on a background thread. The reality is, it works far worse. It seems to ask the app to start decoding as many files as it can when you enter Versions, and pretty soon my machine is blowing its fans and is so stuttery it’s impossible to use. When the document is opening its files on the main thread, this doesn’t happen - it seems Versions is happy enough to let it open one file at a time and only goes back to the app to decode a file as it is displayed. This appears to be a much lower workload, as my laptop stays cool and Versions remains nice and responsive. (Incidentally it would have been a lot nicer if Versions could have worked by asking your app to return some sort of image representing the file or window content rather than getting it to decode the actual file. The Versions browser is totally at the mercy of your app, and sometimes it’s simply not possible to decode a file in a short time. Grabbing a screenshot of the window which Versions could cache would be far more deterministic - it would only then need to ask your app to open an actual file when Versions was closed with a different document choice). All in all, we found that turning OFF concurrent document opening was a better user experience overall. And that is why the progress dialog needs to integrate with the main thread. —Graham On 8 Nov 2013, at 7:04 pm, Fritz Anderson fri...@manoverboard.org wrote: On 8 Nov 2013, at 11:16 AM, Graham Cox graham@bigpond.com wrote: What’s the proper way to do this? I *can* open the file on another thread and
Re: Resolving a file reference from the iTunes plist
On Nov 2, 2013, at 10:39 AM, Charles Constant charlesism@gmail.com wrote: In previous versions, iTunes stored its library location as an 'alias ref', in the iTunes plist, with the key 'alis:1:iTunes Library Location'. In the new version, iTunes 11, it stores the location with the key 'RDoc:132:Documents' using some format is a mystery to me. Are you looking for the library folder or the media folder? The library is found by looking in the prefs/defaults domain “com.apple.iApps” for a key “iTunesRecentDatabases” whose value is an array of URLs; the first URL points to the current XML database file, and the parent directory is the library directory. This is independent of the location of the media folder, i.e. where all the audio files go. I’m not sure how you find that (although of course the XML file points to the full URLs of all the audio files, so generally you don’t need to know.) —Jens ___ 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
CGAffineTransformScale does not send it's scale when using UIDynamicAnimator
I am simply trying to understand the way to use updateItemUsingCurrentState
and how to send a scaled UIView or UIImageView to the animator so I can
have a large box and small box for physics tests on viewDidLoad. I want to
learn how to pass it this info so I can dynamically change the size later
in other events.
I saw a post about updateItemUsingCurrentState from a stackoverflow
question and within Apples docs for it, but I can't find a hard example
using scale with it. The docs at Apple say it updates the rotation.
Im sure ill find out that I need to change the bounds or something else
later, but for now I just wanna get past this barrier.
Sample code below:
@property (strong, nonatomic) IBOutlet UIView *CatBox;
@property (strong, nonatomic) IBOutlet UIImageView *catFishBox;
@property (nonatomic) UIDynamicAnimator* animator;
@property (strong, nonatomic) IBOutlet UIView *wrapperWolfBox;
@end
@implementation CatFishViewController
UIDynamicAnimator* _animator;
UIGravityBehavior* _gravity;
UICollisionBehavior* _collision;
- (void)viewDidLoad
{
[super viewDidLoad];
// Do any additional setup after loading the view, typically from a nib.
_animator = [[UIDynamicAnimator alloc] initWithReferenceView:self.view];
_gravity = [[UIGravityBehavior alloc] initWithItems:@[_wrapperWolfBox]];
[_animator addBehavior:_gravity];
_collision = [[UICollisionBehavior alloc]
initWithItems:@[_wrapperWolfBox]];
_collision.translatesReferenceBoundsIntoBoundary = YES;
[_animator addBehavior:_collision];
//
//
CGAffineTransform maybeGetTransform = CGAffineTransformScale(
_wrapperWolfBox.transform, 2.2, 2.2);
_wrapperWolfBox.transform = maybeGetTransform;
[_animator updateItemUsingCurrentState:self.wrapperWolfBox];
//_animator.updateItemUsingCurrentState:self.catFishBox;
}
___
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NSStackView basics
I'm trying to use NSStackView in what should be the most basic way possible. I create the stack view and add two subviews. But only one of them is ever visible. I'm creating the stack view in code (in my app delegate, for purposes of a test project): NSStackView *stackView = [NSStackView stackViewWithViews:@[self.subview1, self.subview2]]; stackView.orientation = NSUserInterfaceLayoutOrientationVertical; stackView.alignment = NSLayoutAttributeCenterX; stackView.spacing = 0; [self.window.contentView addSubview:stackView]; [self.window.contentView addConstraints:[NSLayoutConstraint constraintsWithVisualFormat:@H:|-(50)-[stackView]-(50)-| options:0 metrics:nil views:NSDictionaryOfVariableBindings(stackView)]]; [self.window.contentView addConstraints:[NSLayoutConstraint constraintsWithVisualFormat:@V:|-(50)-[stackView]-(50)-| options:0 metrics:nil views:NSDictionaryOfVariableBindings(stackView)]]; The two subviews subview1 and subview2 are just plain NSViews, each with an NSTextField label subview constrained to be in the center. At run time, only one subview is visible-- the last one in the array. It's resized to fill the entire stack view. If I resize the window, the stack view and the one visible subview also resize, but no window size ever gets both subviews showing. Obviously I'm missing something basic about stack views, but I don't know what. I've been looking at Apple's InfoBarStackView demo app but haven't worked out which detail it has that I don't (Apple's demo: https://developer.apple.com/library/mac/samplecode/InfoBarStackView/Introduction/Intro.html ) -- Tom Harrington atomicb...@gmail.com AIM: atomicbird1 ___ 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
Re: Apple Sample Code WWDC 2010 session 114 (2551)
For all those interested: https://www.dropbox.com/s/nqdsguiap4qs9ec/WWDC_2010_114.zip Best Phil http://applehelpwriter.com On 9 Nov 2013, at 01:54, Brian Clark ba-cl...@comcast.net wrote: On Nov 8, 2013, at 11:18 AM, 2551 2551p...@gmail.com wrote: I have now been fortunate to receive a copy of the code from a list member. I’m also grateful to several others that also kindly offered me the code. I'm sure there are others interested in this code, if not now than for future reference. Is it available for download anywhere? Thanks. ___ 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
