horizontal radio group
Hi, radio group created in Interface builder is vertical, how to set it horizontal? example, two radio buttons in one line? Thanks, a.c. ___ 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: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: horizontal radio group
On Thu, Jul 1, 2010 at 11:05 PM, Angelo Chen angelochen...@yahoo.com.hk wrote: Hi, radio group created in Interface builder is vertical, how to set it horizontal? example, two radio buttons in one line? Thanks, a.c. Please read the documentation before posting to the list. --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: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: horizontal radio group
On Jul 2, 2010, at 1:05 AM, Angelo Chen wrote: radio group created in Interface builder is vertical, how to set it horizontal? example, two radio buttons in one line? Thanks, A group of radio buttons is really an NSMatrix. The way to change the number of rows and columns in a matrix is to Option-resize it. You can also directly edit the rows and columns by selecting the matrix and opening the attributes inspector. Cheers, Ken ___ 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: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: Error when closing window with IKImageBrowserView in it
I have tested using the orderOut: way of working around this issue, and it works for me. I will still file a bug report on the issue. Gideon On 02/07/2010, at 3:48 PM, Nick Zitzmann wrote: On Jul 1, 2010, at 9:41 PM, Dave Fernandes wrote: Hmmm. I still can't get it to happen reproducibly, but the workaround, if I understand correctly would leek resources in a document-based app, would it not? Perhaps. Then you could try removing the image browser from its superview instead. Nick Zitzmann http://www.chronosnet.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: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Getting notified when memory gets tight
On 10.6, NSCache is handy for caching stuff that I can afford to simply drop as needed - it works great. I'd like to be able to do something a bit like it on 10.5. Is there a notification or other callback I can use to get notified when the system is running low on memory for my app, to give it an opportunity to discard stuff before it starts paging memory out? --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: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Download images and modify bundle?
Hello, When I download an image and want to keep it for further reference, I assume I have to store it in the documents directory and not in the app bundle, because otherwise I would invalidate the signature and the app wont run anymore. Is this correct? Background: I write a catalog app that is delivered with a bunch of images already that are in some folder hierarchy in the app bundle. As the user looks through the catalog, new images are loaded from the web. I would like to store these new images in the same directory as the original ones since otherwise I would have to manage two separate image locations. If I can't store the images in the app bundle together with the others I'm reduced to two options, if I see it correctly: Duplicate the original images to the documents directory (waste of memory) or manage two image folders (administrative overhead). Does anyone have a better idea? Maybe use of file-aliases? Thanks and regards, Sebastian Mecklenburg ___ 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: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
iOS4: VOIP App
Hello Again, As stated in iPhone App Programming Guide Document, below are the interfaces that can be used to configure VOIP: - NSInputStream and NSOutputStream - NSURLRequest - CFReadStreamRef and CFWriteStreamRef I just want to clarify if the first two options can support only TCP connection? Or is UDP possible? I already tried CFReadStreamRef and CFWriteStreamRef and they support TCP. I don't know if it is possible for UDP connection (for CFReadStreamRef and CFWriteStreamRef). Is it possible? I need to know this since my VOIP app uses UDP connection. But I need to support multitasking feature on iOS4. Is this possible without changing its sockets UDP connection? I really need help. T_T Regards, Angie _ Hotmail: Trusted email with Microsoft’s powerful SPAM protection. https://signup.live.com/signup.aspx?id=60969___ 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: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: iOS4: VOIP App
You may not be getting the answers you want here because it's quite possible nobody knows. I would say this is one of the times I'd go use one of my developer program support incidents (in fact 2 out of 3 I have used have been about networking and I've gotten great answers). The names CFStream and NSInput/OutputStream really suggest you want a stream socket underlying them, not a UDP one, but I can't find a thing in the documentation which actually says that. The only three ways to find out for sure are to write some code to test it, or use a support incident, or search the developer forums. If you search the developer forums for 'CFStream udp' you may find out whether UDP sockets can be wrapped in a CFStream and may find an answer about whether UDP sockets can be backgrounded using the VOIP key. Make sure you search back more than the default 90 days to find your UDP answer. I can find only one post about each of those, however they're both from people whom I believe know what they are talking about. On 02-Jul-2010, at 6:49 PM, Angelica Grace Tanchico wrote: Hello Again, As stated in iPhone App Programming Guide Document, below are the interfaces that can be used to configure VOIP: - NSInputStream and NSOutputStream - NSURLRequest - CFReadStreamRef and CFWriteStreamRef I just want to clarify if the first two options can support only TCP connection? Or is UDP possible? I already tried CFReadStreamRef and CFWriteStreamRef and they support TCP. I don't know if it is possible for UDP connection (for CFReadStreamRef and CFWriteStreamRef). Is it possible? I need to know this since my VOIP app uses UDP connection. But I need to support multitasking feature on iOS4. Is this possible without changing its sockets UDP connection? I really need help. T_T Regards, Angie _ Hotmail: Trusted email with Microsoft’s powerful SPAM protection. https://signup.live.com/signup.aspx?id=60969___ 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: http://lists.apple.com/mailman/options/cocoa-dev/rols%40rols.org This email sent to r...@rols.org ___ 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: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
NSTextView editing top-down and right to left.
Hi, I was wondering if its possible to use NSTextView for top-down editing. I could not find a method to set it to top down. Also how do i get the right to left editing working properly [myTextView setBaseWritingDirection:NSWritingDirectionRightToLeft]; this results in a split caret with top half caret at extreme left and bottom half at extreme right and any character typed appears to the right. I want the new character appended to the left. Thanks, Abhinay.___ 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: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: Download images and modify bundle?
Am 02.07.2010 um 10:01 Uhr schrieb sebi: When I download an image and want to keep it for further reference, I assume I have to store it in the documents directory and not in the app bundle, because otherwise I would invalidate the signature and the app wont run anymore. Is this correct? You should always regard the app bundle as read only. The application might have been installed with administrator rights so that the current user does not have write access. If I can't store the images in the app bundle together with the others I'm reduced to two options, if I see it correctly: Duplicate the original images to the documents directory (waste of memory) or manage two image folders (administrative overhead). Does anyone have a better idea? Maybe use of file-aliases? First, it seems the Application Support folder might be a better place than Documents, depending on the nature of those images. Are they the actual data that the user is creating (put them in Documents) or are they material that the user uses to create his documents? (put them in Application Support) To answer the question: Just copy them. That also has the benefit that the user can delete them if he wants to. Andreas ___ 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: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: Download images and modify bundle?
On 02/07/2010, at 6:01 PM, sebi wrote: When I download an image and want to keep it for further reference, I assume I have to store it in the documents directory and not in the app bundle, because otherwise I would invalidate the signature and the app wont run anymore. Is this correct? Mac or iDevice? It's just not a good idea to ever treat your app bundle as a writable location. It wouldn't necessarily break code signing (???) but depending on what privileges your user is running with could fail anyway. Basically you don't want to be modifying your app as it runs. But a better location than Documents is ~/Library/Application Support/YourApp/subdirectories as needed Background: I write a catalog app that is delivered with a bunch of images already that are in some folder hierarchy in the app bundle. As the user looks through the catalog, new images are loaded from the web. I would like to store these new images in the same directory as the original ones since otherwise I would have to manage two separate image locations. If I can't store the images in the app bundle together with the others I'm reduced to two options, if I see it correctly: Duplicate the original images to the documents directory (waste of memory) or manage two image folders (administrative overhead). Does anyone have a better idea? Maybe use of file-aliases? Managing two (or more) folders or sources shouldn't be a big headache if you design it with that in mind from the start. The user interface and the data model behind it can consolidate various locations on disk (or web-based) into one big virtual space if you want - I do that with several managed resource types in my app and it works nicely. From experience I'd say that copying bundle-based resources to another folder at first launch is a waste of time and effort (not so much memory though, as disk space is generally abundant) - I did it that way in earlier versions and regretted it. --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: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: Download images and modify bundle?
Hello, Sorry, it*s on an iPad, I forgot to mention. That's why I mentioned the documents directory, on a Mac I wouldn't want to save anything there automatically, thats right. But to treat the bundle as non-writable is probably a good idea anyway. The problem is that I have thousands of files so I can't cache them all. Also there might be files with the same name and I have to use the newer one. So for every file access I have to look into both folders. Well, whatever, it's probably a bit tedious, but should be managable... Thanks and regards, Sebastian Mecklenburg On 02.07.2010, at 13:50, Graham Cox wrote: On 02/07/2010, at 6:01 PM, sebi wrote: When I download an image and want to keep it for further reference, I assume I have to store it in the documents directory and not in the app bundle, because otherwise I would invalidate the signature and the app wont run anymore. Is this correct? Mac or iDevice? It's just not a good idea to ever treat your app bundle as a writable location. It wouldn't necessarily break code signing (???) but depending on what privileges your user is running with could fail anyway. Basically you don't want to be modifying your app as it runs. But a better location than Documents is ~/Library/Application Support/YourApp/subdirectories as needed Background: I write a catalog app that is delivered with a bunch of images already that are in some folder hierarchy in the app bundle. As the user looks through the catalog, new images are loaded from the web. I would like to store these new images in the same directory as the original ones since otherwise I would have to manage two separate image locations. If I can't store the images in the app bundle together with the others I'm reduced to two options, if I see it correctly: Duplicate the original images to the documents directory (waste of memory) or manage two image folders (administrative overhead). Does anyone have a better idea? Maybe use of file-aliases? Managing two (or more) folders or sources shouldn't be a big headache if you design it with that in mind from the start. The user interface and the data model behind it can consolidate various locations on disk (or web-based) into one big virtual space if you want - I do that with several managed resource types in my app and it works nicely. From experience I'd say that copying bundle-based resources to another folder at first launch is a waste of time and effort (not so much memory though, as disk space is generally abundant) - I did it that way in earlier versions and regretted it. --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: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: Download images and modify bundle?
On 02/07/2010, at 9:50 PM, Graham Cox wrote: But a better location than Documents is ~/Library/Application Support/YourApp/subdirectories as needed Or if your app primarily is an image editor/manipulator, perhaps ~/Pictures/Your App/etc... I've noticed a few apps do that like Flipshare, and I guess that's OK. Or let the user choose... --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: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: Download images and modify bundle?
On 02/07/2010, at 10:19 PM, sebi wrote: The problem is that I have thousands of files so I can't cache them all. Also there might be files with the same name and I have to use the newer one. So for every file access I have to look into both folders. Well, whatever, it's probably a bit tedious, but should be managable... Use the principle of copy-on-write. Load the images (or info about them) from your bundle, but as soon as the user changes one, you know that the file now needs to be copied elsewhere. Maintain some sort of index that tells your system where to load each image from. That way you're only pulling changed images from outside of your bundle, and only writing them when they have changed. The index can be small and lightweight and fast to parse. Big performance win all round. --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: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Flushing NSOutputStream gotten from NSNetService
Hi List, i it possible to flush an NSOutputStream? I have some streams gotten from NSNetServices getInputStream:outputStream:. I send very small chunks (from 1 to 1000 bytes) of data through them. I would like to flush the stream after I wrote a chunk to get the data immediately sent to the other side. Is that possible or does the NSOutputStream flush after every write:maxLength: anyway? Have a nice weekend, atze ___ 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: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Manually set value of a textfield
Hi, If I bind a textfield to the selection of a ArrayController and have more than one item with different value selected, I get a grayed out Multiple Value string. Is there a way of doing this manually? I have a popup that displays the values from the selection, but need to have some manual control over what is displayed. Is there something like Set to multiple selection state? Best Regards Georg___ 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: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Custom bundle icon
Just an aesthetic question. I've implemented an API for cocoa plugins in my app, and the plugins use a custom extension, ftplugin. These plugins show up as folders in the finder, even though I've set the app icon to an icns file. Is there something particular I have to do to have the plugin treated as a package with my custom icon showing? Thanks, John___ 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: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: Custom bundle icon
If only I'd searched a little longer, but the lack of definitive keywords made it difficult... http://lists.apple.com/archives/cocoa-dev/2006/Mar/msg01533.html Now it shows up and acts as a plugin in the Finder, but it still does not use the custom icon file that I've set. On Jul 2, 2010, at 8:39 AM, John Johnson wrote: Just an aesthetic question. I've implemented an API for cocoa plugins in my app, and the plugins use a custom extension, ftplugin. These plugins show up as folders in the finder, even though I've set the app icon to an icns file. Is there something particular I have to do to have the plugin treated as a package with my custom icon showing? Thanks, John ___ 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: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: Custom bundle icon
Le 2 juil. 2010 à 15:39, John Johnson a écrit : Just an aesthetic question. I've implemented an API for cocoa plugins in my app, and the plugins use a custom extension, ftplugin. These plugins show up as folders in the finder, even though I've set the app icon to an icns file. Is there something particular I have to do to have the plugin treated as a package with my custom icon showing? Yes, declare an UTI for your file/plugin type and make sure your type conforms to com.apple.package (take care to not put a white space before or after com.apple.package, else it will not works). -- Jean-Daniel ___ 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: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Info.plist settings for Quick Look?
My Mac OS X application for Leopard and Snow Leopard saves documents with a custom file extension, but the documents' content format is XML. I want my users to see a Quick Look preview of the documents' contents when they select one in the Finder and hit the spacebar. Since Apple's built-in Text.qlgenerator plug-in recognizes XML files, I should be able to get this to work with appropriate settings in my application's Info.plist file without writing my own Quick Look generator. I've got this working if I use the Finder to change the file extension on one of the documents to .xml -- hitting the spacebar shows me the document's XML contents. But when the document has my custom file extension, Quick Look only shows me the document's icon. My Google search turned up many tips about how to set up my Info.plist file so that Quick Look will work with my custom file extension, but I can't get it to work. Can anybody supply step-by-step instructions? The tips say to add public.xml to the UTTypeConformsTo entry in the UTExportedTypeDeclarations entry in Info.plist, then run 'sudo qlmanage -r' in Terminal. But my Info.plist file has always used public.xml, and that doesn't seem to be enough. My Info.plist file has also always had a UTTypeTagSpecification entry with the value set to my custom file extension. -- Bill Cheeseman - b...@cheeseman.name ___ 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: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: iOS4: VOIP App
On Fri, Jul 2, 2010 at 6:49 AM, Angelica Grace Tanchico atanch...@live.com wrote: Hello Again, As stated in iPhone App Programming Guide Document, below are the interfaces that can be used to configure VOIP: - NSInputStream and NSOutputStream - NSURLRequest - CFReadStreamRef and CFWriteStreamRef I just want to clarify if the first two options can support only TCP connection? Or is UDP possible? I already tried CFReadStreamRef and CFWriteStreamRef and they support TCP. I don't know if it is possible for UDP connection (for CFReadStreamRef and CFWriteStreamRef). Is it possible? I need to know this since my VOIP app uses UDP connection. But I need to support multitasking feature on iOS4. Is this possible without changing its sockets UDP connection? My understanding is that you MUST use TCP and an NSStream for your control connection, that is the connection that you use to rendezvous with the server, send keepalives, get notices of incoming calls, etc. However, for the actual call itself, you'll have an audio session keeping you alive and therefore can use UDP and plain sockets for the call. Mike ___ 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: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Bypass Network System Preferences for DNS lookup
Is there any way to bypass the system network preferences for DNS servers to perform all DNS lookups from within a Cocoa app? For example, I would like my app to always make DNS queries to a particular pair of DNS servers. -- Michael Jackson http://mjijackson.com @mjijackson ___ 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: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
phrase searching with SearchKit
I'm trying to set up an index with SearchKit and search it with quoted phrases. It is my understanding that I need to enable proximity indexing to get phrase searches to work. If I don't enable proximity indexing, then it seems like my quoted string is treated as separate search terms. However, when I enable proximity indexing, my quoted string doesn't return any hits from the index. The string I'm searching is from a document I know has been indexed. When I try the quoted string with Spotlight, I can find the document. Here is the code I'm using to create the database: CFMutableDictionaryRef props = CFDictionaryCreateMutable(NULL, 0, kCFTypeDictionaryKeyCallBacks, kCFTypeDictionaryValueCallBacks); CFDictionaryAddValue(props, kSKProximityIndexing, kCFBooleanTrue); theIndex = SKIndexCreateWithURL((CFURLRef) url, (CFStringRef) dbName, kSKIndexInverted, props); Anyone know what I'm doing wrong? Mike ___ 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: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Core Animation vs. table/browser/matrix views - looking for advice
Greetings, I'm about to undertake an almost complete rewrite of my user interface. I've made the decision to drop support for OS X 10.4, which will allow me to (finally) use Core Animation and Grand Central extensively. Now I'm faced with how to engineer the many table, outline, browser, and matrix views I have. I have some elements of the views that are animated, and I'll want to do more. I'll especially want to animate items (i.e. rows) as single entities—–sliding the row up or down, zooming it in or out, etc. My table views are fairly complex. Not draw not just the content of individual cells, but also background graphics (that draws shaded regions around groups of objects) and overlay graphics (that draw lines between connected/related objects). Right now, I'm using the trick of having the table or browser cell create persistent NSView subviews that preform the drawing+animation for selected cells. The rest are simply drawn using traditional NSCell objects. Now I want to migrate to Core Animation, but I know that child CALayers and NSViews don't mix. That is, an NSView will either host CALayer objects or NSView subviews, but not both. This makes working CALayers into NSTableView and NSOutlineView somewhat problematic. For example, I can't just use CALayers to draw background or highlights if some of the cells are creating NSViews to display content in the same view. So what's the best way to construct complex table, outline, and browser views that support CA layers? So far I've imagined two ways of approaching this: (1) Keep with the traditional table/outline/browser view + table cell logic, creating NSView subviews objects which then host their own CALayers to provide animation. (2) Display all table data using CALayers. Instead of drawing anything, each cell invocation would spontaneously create a CALayer for each cell in the table. Background and overlay graphics would be provide by other CALayers. I'm sure the first will work, but it feels clunky. The second approach has a lot of appeal, but I worry that NSTableView or NSBrowser might create hidden/secret NSView subviews that will mess everything up. I'm sure some of you have been down this road, and I value your advice. ___ 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: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: iOS4: VOIP App
On Fri, Jul 2, 2010 at 8:05 AM, Michael Ash michael@gmail.com wrote: My understanding is that you MUST use TCP and an NSStream for your control connection, that is the connection that you use to rendezvous with the server, send keepalives, get notices of incoming calls, etc. However, for the actual call itself, you'll have an audio session keeping you alive and therefore can use UDP and plain sockets for the call. I have a similar understanding but would love to know if I am wrong. -Shawn (sorry for the duplicate email Mike) ___ 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: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: Bypass Network System Preferences for DNS lookup
Afaik, no. Why would you do that? Sent from my iPhone4 ___ 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: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: iOS4: VOIP App
On Jul 2, 2010, at 4:39 AM, Roland King wrote: The names CFStream and NSInput/OutputStream really suggest you want a stream socket underlying them, not a UDP one, but I can't find a thing in the documentation which actually says that. Yes, those APIs use TCP, not UDP. Stream-based APIs make no sense for UDP. —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: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: Bypass Network System Preferences for DNS lookup
On Jul 1, 2010, at 7:42 PM, Michael Jackson wrote: Is there any way to bypass the system network preferences for DNS servers to perform all DNS lookups from within a Cocoa app? For example, I would like my app to always make DNS queries to a particular pair of DNS servers. I’m pretty sure that’s not directly possible, since DNS lookups are done by a shared daemon process, not by individual apps. What you could do is incorporate direct DNS-lookup code into your app (I’m sure there are open-source libraries for it), use that to resolve the hostname to an IP address, and then use that IP address with your favorite networking APIs instead of the hostname. (If you’re using NSURLConnection, you’d need to transform the raw address into dotted-quad form, or the equivalent for IPv6.) —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: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: Bypass Network System Preferences for DNS lookup
Afaik, no. Why would you do that? I don't know about the original sender's reason, but DNS servers are often the initial target of attacks. Then when you go to, say www.nike.com, the DNS server sends you the IP address of a malicious site. That site infects your browser, then redirects you to the original www.nike.com web site -- you never know you were just hit by a drive-by browser attack. In any case, this discussion should probably be re-directed to the darwin-kernel mailing list instead of Cocoa. Todd ___ 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: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: force rendering of views off screen
hello guys,
thanks for your comments - i just found the right knob to draw the
content of my invisible subview in my uiscrollview.
i simply subclassed every subview and implemented -drawRect:
additionally using uigraphicsgetcurrentcontext().
@david
yeah, this was just simple math to picture the scene - but you're
right, it depends...
and could you tell the iOS team i feel great with their APIs, please? thx ;)
here's the (ugly) method code, pdfRef and pageNo are properties of the
enclosing class/instance.
- (void) drawRect:(CGRect)rect {
// get the page reference
CGPDFPageRef page = CGPDFDocumentGetPage(pdfRef, pageNo);
CGContextRef context = UIGraphicsGetCurrentContext();
// white background
CGContextSetRGBFillColor(context, 1.0, 1.0, 1.0, 1.0);
CGContextFillRect(context, CGContextGetClipBoundingBox(context));
// transformation/-lation
CGContextTranslateCTM(context, 0.0, rect.size.height);
CGContextScaleCTM(context, 1.0, -1.0);
CGContextConcatCTM(context, CGPDFPageGetDrawingTransform(page,
kCGPDFCropBox, rect, 0, true));
CGContextDrawPDFPage(context, page);
}
hope this help's someone else.
- bye
2010/6/24 David Duncan david.dun...@apple.com:
On Jun 24, 2010, at 8:59 AM, Martin Glaß wrote:
sorry, CATiledLayer actually improves performance. the downside is,
the tiles need time to be drawn and are faded in using an animation of
0.25 seconds.
so, if there are 6 tiles to be drawn you end up seeing iOS building
the mosaic in a total of 1.5 seconds.
The fade time is not synchronous with the content generation. If you generate
content fast, it could all fade in in 0.25s. If it is taking longer, it is
due to the rendering time of that content, but unless your rendering time is
0.25s it is unlikely that you will take exactly 1.5s for all of it to display
:).
--
David Duncan
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Re: Flushing NSOutputStream gotten from NSNetService
On Jul 2, 2010, at 5:36 AM, Alexander Spohr wrote: I have some streams gotten from NSNetServices getInputStream:outputStream:. I send very small chunks (from 1 to 1000 bytes) of data through them. I would like to flush the stream after I wrote a chunk to get the data immediately sent to the other side. Is that possible or does the NSOutputStream flush after every write:maxLength: anyway? TCP has some finely-tuned algorithms to decide when to send the buffer. Usually it’s best not to second-guess these, but there are some cases where you do need to. Terminal protocols like telnet and ssh use setsockopt to set a special immediate mode (I can’t remember the name of the option but it’s in the man page.). I’m not sure how you get from an NSStream object to the underlying socket descriptor that you’d pass to setsockopt. You can get to that from a CFStream, but I don’t know whether NSStream is toll-free-bridged to CFStream. (And there’s no reason you have to use NSStream with Bonjour. The -getInputStream:outputStream: method is just a convenience — you can resolve the service to find its IP address and then use whatever API you like to open a socket.) —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: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: phrase searching with SearchKit
On Jul 2, 2010, at 11:09 AM, Michael Thon wrote: I'm trying to set up an index with SearchKit and search it with quoted phrases. It is my understanding that I need to enable proximity indexing to get phrase searches to work. If I don't enable proximity indexing, then it seems like my quoted string is treated as separate search terms. However, when I enable proximity indexing, my quoted string doesn't return any hits from the index. The string I'm searching is from a document I know has been indexed. When I try the quoted string with Spotlight, I can find the document. Here is the code I'm using to create the database: CFMutableDictionaryRef props = CFDictionaryCreateMutable(NULL, 0, kCFTypeDictionaryKeyCallBacks, kCFTypeDictionaryValueCallBacks); CFDictionaryAddValue(props, kSKProximityIndexing, kCFBooleanTrue); theIndex = SKIndexCreateWithURL((CFURLRef) url, (CFStringRef) dbName, kSKIndexInverted, props); Anyone know what I'm doing wrong? Answering my own question - you need to execute this function: SKIndexFlush(theIndex); before closing the index: SKIndexClose (theIndex); SKIndexFlush dosen't seem to occur in the example code that is in the SearchKit programming guide but it is buried in the text. If you fail to fail to call SKIndexFlush or SKIndexClose you apparently get an index that SearchKit can search (without errors) but the results are unpredictable. ___ 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: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: Bypass Network System Preferences for DNS lookup
On Jul 1, 2010, at 9:42 PM, Michael Jackson wrote: Is there any way to bypass the system network preferences for DNS servers to perform all DNS lookups from within a Cocoa app? For example, I would like my app to always make DNS queries to a particular pair of DNS servers. -- Michael Jackson http://mjijackson.com @mjijackson ___ http://developer.apple.com/mac/library/documentation/Networking/Conceptual/SystemConfigFrameworks/SC_UnderstandSchema/SC_UnderstandSchema.html#//apple_ref/doc/uid/TP40001065-CH203-CHDIHDCG ___ 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: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: Bypass Network System Preferences for DNS lookup
On Jul 1, 2010, at 9:42 PM, Michael Jackson wrote: Is there any way to bypass the system network preferences for DNS servers to perform all DNS lookups from within a Cocoa app? For example, I would like my app to always make DNS queries to a particular pair of DNS servers. As a starting point (following on from Jens' suggestion): http://sourceforge.net/projects/adns/. Nice, simple source code which you can hack around, liberal license. No doubt there are other options out there. Regards, Paul Sanders. ___ 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: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: Bypass Network System Preferences for DNS lookup
Le 2 juil. 2010 à 19:33, Jens Alfke a écrit : On Jul 1, 2010, at 7:42 PM, Michael Jackson wrote: Is there any way to bypass the system network preferences for DNS servers to perform all DNS lookups from within a Cocoa app? For example, I would like my app to always make DNS queries to a particular pair of DNS servers. I’m pretty sure that’s not directly possible, since DNS lookups are done by a shared daemon process, not by individual apps. What you could do is incorporate direct DNS-lookup code into your app (I’m sure there are open-source libraries for it), use that to resolve the hostname to an IP address, and then use that IP address with your favorite networking APIs instead of the hostname. (If you’re using NSURLConnection, you’d need to transform the raw address into dotted-quad form, or the equivalent for IPv6.) FWIW, dig can do that, as you can specify a server when you use it to test DNS query: http://www.opensource.apple.com/source/bind9/bind9-31/bind9/bin/dig/ -- Jean-Daniel ___ 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: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
NSMatrix setState and setSelectionFrom
while(index != NSNotFound)
{
for(i=0;icount;i++)
{
BMatrixCell *bmxc = [cells objectAtIndex:i];
int cmp = bfn.GetFileName().CompareNoCase(bmxc-
mBFilename.GetFileName());
if(cmp == 0)
{
[bmxc setState:NSOnState];
[_browserView getRow:row column:col
ofCell:bmxc];
NSInteger pos = (row*cols)+col;
[_browserView setSelectionFrom:pos to:pos
anchor:pos highlight:YES];
break;
}
}
}
There is more code above and below this snippet but the point is that
after executing with multiple bmxc cells that should be selected only
the last one found is selected.
BUT, if [bmxc setState:NSOnState]; is not called as in:
while(index != NSNotFound)
{ for(i=0;icount;i++)
{
BMatrixCell *bmxc = [cells objectAtIndex:i];
int cmp = bfn.GetFileName().CompareNoCase(bmxc-
mBFilename.GetFileName());
if(cmp == 0)
{
[_browserView getRow:row column:col
ofCell:bmxc];
NSInteger pos = (row*cols)+col;
[_browserView setSelectionFrom:pos to:pos
anchor:pos highlight:YES];
break;
}
}
}
then all expected to be selected cells are selected !
Seems like strange behavior to me. Comments please.
-koko
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Re: Capturing output from another task with elevated privilages
Eric Hoaglin wrote:
I have the following code:
http://www.pasteit4me.com/763005
I'm trying to capture the output of the task that I run. and from
what I understand, if you want to do so, you pass a FILE*
to AuthorizationExecuteWithPrivileges and then just read it as a
normal file (which you can see from lines 29-45
Your code has a serious bug.
if(taskFile != NULL) {
const int BYTES_TO_READ = 64;
char *theCString = malloc(sizeof(char) * BYTES_TO_READ);
int bufferSize = 64;
int bytesRead = 0;
int totalBytes = 0;
while((bytesRead = fread(theCString, 1, BYTES_TO_READ, taskFile)) !=
0) {
bufferSize += 64;
theCString = realloc(theCString, bufferSize);
totalBytes += bytesRead;
}
if (taskFile != NULL) {
NSLog(@Total Bytes Read: %i, totalBytes);
*tResults = [[NSString alloc] initWithBytesNoCopy:theCString
length:totalBytes encoding:NSUTF8StringEncoding freeWhenDone:YES];
}
Your fread() is always reading data into the start of the buffer
'theCString'. This is wrong. There should be a separate pointer
that's advanced by the number of bytes just read. Or use fread
(theCString+totalBytes,...).
You also have a stylistic flaw of repeated use of the magic number
64, despite defining a constant BYTES_TO_READ to represent it.
Another possible problem is you don't test the result returned from
AEWP(). You go straight into reading the FILE, and only test the
result later as part of a questionable retry block, not shown
above. There is a dubious busy loop in the retry, and there may be
other problems.
Is the fread() bug the cause of the problem you posted about? I
don't know. But it certainly is a significant problem, and it has a
huge effect on what data gets returned as the output of the task
string.
You never said what you were actually executing with elevated
privileges. If I were you, I'd test your code by running it on /bin/
echo or /usr/bin/id. Both of those executables are well
characterized and well behaved, and they emit text only on stdout.
If those fail in the same way, then make a well-isolated fully
compilable example and post its source.
The first step to solving the problem is to replicate it, but you
haven't provided enough code to do that.
-- GG
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Re: Capturing output from another task with elevated privilages
And you also need to identify what OS version you're running on. -- GG ___ 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: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Calling javascript from Cocoa 'facelessly'
Thanks for this. I tried it, checking that provisionalDataSource is nil before continuing as per the documentation, but sadly I still get the same result - regardless of whether I have the real javascript function name or a made up one, and regardless of whether the URL I use is real or imaginary. Most frustrating. I checked that my NSRunLoop was working properly by using sleep - and it is. Perplexed. Any other ideas? On 30 Jun 2010, at 19:30, Michael Ash wrote: On Wed, Jun 30, 2010 at 1:01 PM, Geoffrey Holden 45rpmli...@googlemail.com wrote: I realize that this is a hell of a big query, and I'm not entirely sure that I've given enough information for anyone to help answer it. At the very least, I guess I'm hoping for a reference to some really solid documentation on how to do what I'm trying to do - the documentation on ADC seems to be a little light in this area. From the code you've posted, I suspect the problem is that the page hasn't actually loaded by the time you try to run your JS code. WebView generally works asynchronously. Something like [mainFrame loadRequest:request] will return quickly and the WebView will not actually load things until the runloop runs, and then you'll get notified later on when it's done loading. What you'll want to do is call loadRequest:, then run the NSRunLoop on the main thread until your load delegate is told that the page is done loading. Then you should be able to do your JS stuff. Note that it is possible, and not all that hard, to run an NSRunLoop in a faceless program, it just requires a bit more manual intervention than in a GUI app where it's all set up for you. If you're already doing that and your code was just abbreviated, well, ignore the above Mike ___ 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: http://lists.apple.com/mailman/options/cocoa-dev/45rpmlists%40googlemail.com This email sent to 45rpmli...@googlemail.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: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Sample code for supporting pinch zoom in Mac OS X?
Is there sample code demonstrating how to support arbitrary pinch zoom/scroll in a custom view, on Mac OS X? Similar to how Preview.app does it. If not, what about recognizing the pinch gesture? Thanks! -- Rick ___ 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: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: Sample code for supporting pinch zoom in Mac OS X?
Override magnifyWithEvent: in your view then use -[NSEvent magnification] On Jul 2, 2010, at 1:54 PM, Rick Mann wrote: Is there sample code demonstrating how to support arbitrary pinch zoom/scroll in a custom view, on Mac OS X? Similar to how Preview.app does it. If not, what about recognizing the pinch gesture? Thanks! -- Rick ___ 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: http://lists.apple.com/mailman/options/cocoa-dev/kainjow%40kainjow.com This email sent to kain...@kainjow.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: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: Bypass Network System Preferences for DNS lookup
It should be possible using the dynamic store of the System Configuration framework. http://developer.apple.com/mac/library/documentation/Networking/Conceptual/SystemConfigFrameworks/SC_Components/SC_Components.html#//apple_ref/doc/uid/TP40001065-CH207-CHDDDCHG The documentation says that this store contains a snapshot of the current configured networking preferences, and it's constantly being updated by various Configuration Agents as conditions change (location, for example). The documentation also outlines the system configuration schema which is the complex data structure that contains all networking settings, among other things. My problem is that the schema is so complex, I can't figure out how to use it properly to change the DNS settings. As far as my intent goes, it's nothing malicious. I would simply like to make my app always query the same set of DNS servers for speed/security reasons. This shouldn't be a shocker to anyone who has ever worked on high security applications. Any help would be appreciated. Thanks, Michael -- Michael Jackson http://mjijackson.com @mjijackson On Fri, Jul 2, 2010 at 11:33 AM, Jens Alfke j...@mooseyard.com wrote: On Jul 1, 2010, at 7:42 PM, Michael Jackson wrote: Is there any way to bypass the system network preferences for DNS servers to perform all DNS lookups from within a Cocoa app? For example, I would like my app to always make DNS queries to a particular pair of DNS servers. I’m pretty sure that’s not directly possible, since DNS lookups are done by a shared daemon process, not by individual apps. What you could do is incorporate direct DNS-lookup code into your app (I’m sure there are open-source libraries for it), use that to resolve the hostname to an IP address, and then use that IP address with your favorite networking APIs instead of the hostname. (If you’re using NSURLConnection, you’d need to transform the raw address into dotted-quad form, or the equivalent for IPv6.) —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: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: Bypass Network System Preferences for DNS lookup
On Jul 2, 2010, at 3:54 PM, Michael Jackson wrote: I would simply like to make my app always query the same set of DNS servers for speed/security reasons. This shouldn't be a shocker to anyone who has ever worked on high security applications. Understandable. Just be aware that (a) your favorite DNS server may be slow if the computer is many hops away from it, (b) it may not be reachable at all if the computer is behind a firewall, and (c) it can still be spoofed if there are malicious/hacked routers in the way (unless you’re using DNS-Sec.) —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: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: Getting notified when memory gets tight
On Jul 2, 2010, at 12:14 AM, Graham Cox wrote: I'd like to be able to do something a bit like it on 10.5. Is there a notification or other callback I can use to get notified when the system is running low on memory for my app, to give it an opportunity to discard stuff before it starts paging memory out? On a Modern OS™ it’s not easy to say when the system’s running low on memory, because there’s physical RAM, and there’s address space, and the pages in address space can be clean or dirty, or mapped from a file, and so forth. And all of that stuff is shareable between processes. What NSCache does, I believe, is use the vm_allocate() system call to allocate address space that’s marked as being purgeable: its pages won’t get written to backing store, they just get thrown away. You have to make calls to lock and unlock purgeable memory so it won’t get thrown away while you’re using it. There’s some info about vm_allocate here, although it doesn’t talk about the purgeable mode. IIRC, the header file does, though. http://developer.apple.com/mac/library/documentation/Performance/Conceptual/ManagingMemory/Articles/MemoryAlloc.html —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: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: NSTextView editing top-down and right to left.
Hello Abhinay, I was wondering if its possible to use NSTextView for top-down editing. I could not find a method to set it to top down. NSTextView currently does not support the vertical text editing. this results in a split caret with top half caret at extreme left and bottom half at extreme right and any character typed appears to the right. I want the new character appended to the left. The Text System is handling bidirectional scripts based on the Unicode Bidi Algorithm. With the specification, the position of a character is determined by the character's Bidi property. For example, characters inside right-to-left words always flow to the left, and left-to-right words to the right. The base writing direction API controls the general text flow direction in the paragraph. It affects the relationships between words, but not characters inside each word. This is, of course, an over-simplification (there are more to the specification), but you get the idea. Aki On 2010/07/02, at 4:44, Abhinay Kartik Reddyreddy wrote: Hi, I was wondering if its possible to use NSTextView for top-down editing. I could not find a method to set it to top down. Also how do i get the right to left editing working properly [myTextView setBaseWritingDirection:NSWritingDirectionRightToLeft]; this results in a split caret with top half caret at extreme left and bottom half at extreme right and any character typed appears to the right. I want the new character appended to the left. Thanks, Abhinay.___ 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: http://lists.apple.com/mailman/options/cocoa-dev/aki%40apple.com This email sent to a...@apple.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: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Looking for GoFetch Core Data sample from WWDC08
This sample was featured in session 381 - Core Data Tips Tricks. I looked in the current Mac sample library on developer.apple.com but no-joy. -Michael ___ 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: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: Getting notified when memory gets tight
On 03/07/2010, at 9:47 AM, Jens Alfke wrote: On Jul 2, 2010, at 12:14 AM, Graham Cox wrote: I'd like to be able to do something a bit like it on 10.5. Is there a notification or other callback I can use to get notified when the system is running low on memory for my app, to give it an opportunity to discard stuff before it starts paging memory out? On a Modern OS™ it’s not easy to say when the system’s running low on memory, because there’s physical RAM, and there’s address space, and the pages in address space can be clean or dirty, or mapped from a file, and so forth. And all of that stuff is shareable between processes. What NSCache does, I believe, is use the vm_allocate() system call to allocate address space that’s marked as being purgeable: its pages won’t get written to backing store, they just get thrown away. You have to make calls to lock and unlock purgeable memory so it won’t get thrown away while you’re using it. There’s some info about vm_allocate here, although it doesn’t talk about the purgeable mode. IIRC, the header file does, though. http://developer.apple.com/mac/library/documentation/Performance/Conceptual/ManagingMemory/Articles/MemoryAlloc.html —Jens Thanks Jens, I'll look into it. It might not be worth it, as we are trying to encourage users to move to 10.6. My 10.5 cache already limits the number of cached items and discards the least recently used ones to stay within the limit - that might be enough especially as previously we just cached these items in a NSMutableDictionary and it was never purged. But now I've seen NSCache in action, it's a nice addition to the arsenal - pity it wasn't thought of earlier! --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: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
How is 'truncate last visible line' accomplished?
How is 'truncate last visible line' accomplished for wrapped text? I have a custom cell that I would like to have this behaviour in. Most of the system controls/cells support this but it's not clear how it's done for custom cells. I thought it would be a paragraph style attribute but I don't see anything there. --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: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
