Long Time Dealy When getting Vended Object
Hi,
Really going mad, it is taking long time response when i am trying
to get vended Object from the remote machine which doesn't exist in
the network. .
I am facing same long time delay(more than 60 sec) when i am trying
to get vended object from the remote machine which gone to sleep.
Below is the code
-(id)serverObject {
id serverObject = nil;
@try{
serverObject = [[self serverConnection] rootProxy];
}...@catch(NSException *exception) {
serverObject = nil;
[self destroyConnection];
}
return serverObject;
}
-(NSConnection *)serverConnection {
if(!serverConnection) {
NSString *webAppURLString = [[NSUserDefaults standardUserDefaults]
objectForKey:kPXWebAppURL];
NSString *host = nil;
if(!(webAppURLString [webAppURLString length] 0)) {
host =[[NSProcessInfo processInfo] hostName];
} else {
host = [[NSURL URLWithString:webAppURLString] host];
}
NSSocketPort *port = [[NSSocketPort alloc]
initRemoteWithTCPPort:PORT_NUMBER host:host];
serverConnection = [[NSConnection alloc] initWithReceivePort:nil
sendPort:port];
[serverConnection setDelegate:self];
[serverConnection setRequestTimeout:1.0f];
[serverConnection setReplyTimeout:1.0f];
[[NSNotificationCenter defaultCenter] addObserver:self
selector:@selector(handleConnectionDied:)
name:NSConnectionDidDieNotification object:serverConnection];
[port release];
}
return serverConnection;
}
Please help me out in this
Regards
SKiranKumar
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Which is the event that when the mouse move out of the window area would response?
hello all:I had searched the document of the NSWindow,but I can't find the event the would response when the mouse move out of the window area . Anyone can tell me which method I could use? thank you Joe YIK ___ 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: Which is the event that when the mouse move out of the window area would response?
On 21 apr 2009, at 23.22, Joe Yi wrote: hello all:I had searched the document of the NSWindow,but I can't find the event the would response when the mouse move out of the window area . Anyone can tell me which method I could use? I don't think that's functionality that's built into NSWindow, but you can get to it using tracking areas: http://developer.apple.com/documentation/Cocoa/Reference/NSTrackingArea_class/Reference/Reference.html http://developer.apple.com/documentation/Cocoa/Conceptual/EventOverview/TrackingAreaObjects/TrackingAreaObjects.html http://developer.apple.com/documentation/Cocoa/Conceptual/EventOverview/MouseTrackingEvents/MouseTrackingEvents.html j o a r ___ 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: How to make app login window to look like OS X user login window ?
On 22 Apr 2009, at 06:32:55, Mario Kušnjer wrote: Greetings everyone ! So the question is how to make a window that doesn't have a title bar and borders ? Actually I would like it to be just like user login window of OS X. This could also go for a so called Splash Screen on app launch. Although I'd appreciate it if you could in any way avoid the latter. I have always found them extremely annoying on OS X. If you're app takes a long time to load, something small and simple like what iWork does seems better.___ 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: Time since Login?
On 22.04.2009, at 04:43, Trygve Inda wrote: Is there also a way to determine some sort of overall system activity? There's Unix calls in the Kernel to do this, for instance host_statistics() with the HOST_CPU_LOAD_INFO selector. They're a little fiddly to use because everything you do in response to them can change their value again, but you might find a heuristic that works. We used them for some fun in one of our about screens, so I can't tell you whether they're suitable for what you're doing, but it looked OK. Cheers, -- Uli Kusterer The Witnesses of TeachText are everywhere... http://www.zathras.de ___ 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: Drag and drop display image and file path?
On 22.04.2009, at 00:03, Henrietta Read wrote: NSArray *files = [pboard propertyListForType:NSTIFFPboardType]; [self setImage:[files objectAtIndex:0]]; This is probably your mistake. setImage expects an NSImage*. Whatever is on the pasteboard in that array you have, it's unlikely to be an NSImage. AFAIK NSTIFFPboardType is an NSData containing raw TIFF data, so you'll probably have to create an NSImage from that or something like that. Mind you, that's from memory, I might be misremembering this pasteboard flavour. Cheers, -- Uli Kusterer The Witnesses of TeachText are everywhere... http://www.zathras.de ___ 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: how to get the save File path from NSPrintpanel
On 21.04.2009, at 12:08, sandeep chaudhary wrote: I am using the Objective-C for my application. In my application I use the NSPrintPanel to print the document. In the NSPrintPanel user can save the document using the Save as pdf option of NSPrintPanel, and a new dialog is open to save the document. In this dialog user can choose any path to save the file. So i want to get this path selected by user . I have go through the NSPrintPanel API's but could not get any api who can give me the saved path. Sp please tell me in details how can i get this saved path from NSPrintPanel. Short answer: You don't. All that is handled by the print panel for you. The print panel is supposed to produce output that looks the same as if it was printed. So what it does is it asks your app to do the drawing for printing, but gives you a PDF graphics context to draw into. You just do the same as when printing to paper. If you want to do your own custom PDF export, add that to the Save as... menu item and use PDFKit or similar to set up a PDF the way you want and draw to it. Cheers, -- Uli Kusterer The Witnesses of TeachText are everywhere... http://www.zathras.de ___ 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: Core Data Fetches + Transient Properties + NSPredicateEditor = Sadness
Of course, why Apple couldn't have then added automatic support for in-memory matching as the second step I don't know Probably because nobody ever cared enough to file an enhancement request, and it didn't occur to us that writing 1 line of code to call filteredArrayWithPredicate was so troublesome. - Ben ___ 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: How to make app login window to look like OS X user login window ?
On 2009.04.22, at 08:55, Benjamin Dobson wrote: Although I'd appreciate it if you could in any way avoid the latter. I have always found them extremely annoying on OS X. If you're app takes a long time to load, something small and simple like what iWork does seems better.___ Thanks everyone for answering ! Actually I was thinking on making a Splash Screen until app loading and when ready to do some kind of transition (like cube rotate that OS X uses) to the login window It wouldn't display Splash Screen for long because login window is simple except for network connection checking because app should be able to use network resources Mario ___ 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: Long Time Dealy When getting Vended Object
On Apr 22, 2009, at 1:14 AM, Kiran Kumar S wrote: Really going mad, it is taking long time response when i am trying to get vended Object from the remote machine which doesn't exist in the network. . I am facing same long time delay(more than 60 sec) when i am trying to get vended object from the remote machine which gone to sleep. Below is the code [...] On which line is the code blocking? You can find out by sampling the process from Activity Monitor or breaking into the process with the debugger. The delay you're seeing is probably the TCP connection timeout. On most systems, it will take about 9 minutes for TCP to give up all attempts to connect and timeout. I would hope that NSConnection would implement its own timeout mechanism as an alternative to allowing TCP to exhaust itself. As near as I can tell from reviewing the documentation, the reply timeout should govern the -rootProxy method. Since you're setting that, then I'm not sure why it's not working. This might be a bug, which you should file at http://bugreport.apple.com . Regards, 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: Core Data Fetches + Transient Properties + NSPredicateEditor = Sadness
The fact that Core Data cannot fetch using a predicate based on transient properties [1] seems to greatly limit the utility of the NSPredicateEditor view, and makes me very sad. Dear list. transient (adj): (1) passing especially quickly into and out of existence May I suggest that the expectation that Core Data should fetch based on criteria that DOES NOT EXIST in the file seems somewhat unrealistic ? However, enhancement requests are always welcome if you can articulate a coherent solution to the existential limitation. But there's an even better way. Upon further study of the Predicate Programming Guide, I find that there are even more limitations to Core Data fetches with predicates. The most troubling is that: The Core Data SQL store supports only one to-many operation per query; therefore in any predicate sent to the SQL store, there may be only one operator (and one instance of that operator) from ALL, ANY, and IN. Do you have a specific scenario in which you need to perform nested to- many operations, yet you cannot use SUBQUERY or compound queries like OR ? Or is this troubling, in the sense that the universe is doomed to evaporate kind of way ? A much better way appears to be to fetch all objects from the store with no predicate and then use -[NSArray filteredArrayWithPredicate:]. This takes only one more line of code, solves all problems, and is supposedly cheaper too: This does not solve all problems, it most emphatically is NOT cheaper, and most assuredly does NOT scale. The atomic file approach is convenient and extremely simplistic. It also fails to scale gracefully past 10^2 objects. Optimizing memory management is very important for launch time and concurrency. The monster 8 core mac pro will be constrained by the memory bus (vastly slower compared to the sum computational power) if you're careless with memory usage. In addition to the memory bus bandwidth, concurrency is highly impacted by locality of reference. Keeping the voracious cpus fed with useful work is quite challenging for many pragmatic application tasks. Makes me wonder why NSFetchRequest even supports a predicate, since its predicate has all these limitations and is supposedly more expensive when compared to fetching all objects and then using - [NSArray filteredArrayWithPredicate:] ? ... If you redrew the entire window all the time, for each and every pixel change, and then marveled at the limitations, people might suggest clipping your drawing to the intersection of the dirty and visible regions. You might also use bounding rects as a convenient approximation of more complex region clipping calculations. These days even apps with modest requirements need bounding rects and region clipping for their data too. - Ben ___ 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: MDItemCopyAttribute and kMDItemFinderComment
On 22 Apr 2009, at 04:30, Jeremy W. Sherman wrote: getxattr(2) will directly access the current on-disk attribute value. Why not just use it as Alastair suggested? I suppose it is worth mentioning that getxattr() won't work as a way of getting the Finder information if the drive you're using is formatted with a filesystem that doesn't support attributes. But on HFS+ I think it's a good bet that the attribute name won't change (unless the format of the data changes dramatically, and in that case you need more code anyway). Kind regards, Alastair. -- http://alastairs-place.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: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: Core Data Fetches + Transient Properties + NSPredicateEditor = Sadness
On 22 Apr 2009, at 08:48, Ben Trumbull wrote: Of course, why Apple couldn't have then added automatic support for in-memory matching as the second step I don't know Probably because nobody ever cared enough to file an enhancement request, and it didn't occur to us that writing 1 line of code to call filteredArrayWithPredicate was so troublesome. Calling -filteredArrayWithPredicate is no hassle, but for a large predicate, it has the bad performance of comparing a bunch of the persistent properties all over again, despite already knowing they'll match the predicate. Since I assume Core Data must do some kind of internal splitting up of the predicate in order to perform its fetch, I'd have thought it is in a good position to know what the remaining transient portion of the predicate is. I haven't filed a radar I admit as this hadn't become a issue for me yet, but may well do. ___ 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: newbie questions on NSString* as a class attribute
On 22 Apr 2009, at 02:15, Andrew Farmer wrote: On 21 Apr 09, at 17:53, Wayne Shao wrote: Let's say that I have a member variable NSString* logFilePath, I do init in the initWith method as logFilePath = [[some_other_path stringByAppendingPathComponent:@log.txt] copy]; The question is, if I do not call copy, is it true that logFilePath could be subject to be GC'ed? Are you using garbage collection or not? If you ARE using garbage collection, the copy is unnecessary. So long as the value is reachable through strong references (which logFilePath is, so long as the object itself is reachable), it will not be collected. If you ARE NOT using garbage collection, you should be retaining this value rather than copying it. See the memory management programming guide [1] for details. [1]: http://developer.apple.com/documentation/Cocoa/Conceptual/MemoryMgmt/index.html To be fair, NSString's immutable nature does make -copy perfectly acceptable (and I would say desirable in many cases) as it ends up doing the same as -retain. 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: Really big files and encodings
On 22 Apr 2009, at 06:57, Seth Willits wrote: In my app, I import data from potentially very large files. In the first pass, I simply mmap'd the entire file, created a string using CFStringCreateWithBytesNoCopy, and go about my business. This works great until it hits the address limit when it's running as a 32-bit process, so now in the second pass I want to rework it a bit to only mmap a chunk (128 MB) at a time. Now, if it were simply binary data, I could chop up the file however I wanted, but since the file I'm processing is actually a huge *text* file, I need to mmap an appropriate range so creating the string doesn't fail because a multi-byte character was split down the middle. Hi Seth, I think this highlights a significant deficiency in the CFString/ NSString API, which is that it's impossible to get any kind of streaming encoder/decoder (which is really what you want for this kind of task). Have you considered using libiconv instead to convert to UTF-16, then creating your strings from that? That would give you more control and would mean that you didn't have to guess where the encoder would want to start/finish working on your data (since it will tell you). I guess ICU might also be a way around this, though iconv() et al. have the significant benefit of being documented and supported API. Kind regards, Alastair. -- http://alastairs-place.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: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
file extensions and Mime Type
Hi All, (posting this on behalf of my colleague) Application we are currently working supports file drag from desktop It typically finds what type of file it is and then processes it accordingly. we don't want to solely depend on file extension. How can file Mime Type help us.. We have listed few mime types which we support and mapped them accordingly for processing. How can one retrieve the Mime type for a particular file? tried NSFileHandle and NSWorkSpace but of no help , (even googled around for hints , may be my search strings aren't effective ) Thanks Rajesh ___ 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: file extensions and Mime Type
On 22 Apr 2009, at 10:31, rajesh wrote: Application we are currently working supports file drag from desktop It typically finds what type of file it is and then processes it accordingly. we don't want to solely depend on file extension. How can file Mime Type help us.. We have listed few mime types which we support and mapped them accordingly for processing. How can one retrieve the Mime type for a particular file? tried NSFileHandle and NSWorkSpace but of no help , (even googled around for hints , may be my search strings aren't effective ) OS X doesn't rely on MIME types, for a variety of reasons. You want to be using UTIs instead. Take a look here: http://developer.apple.com/macosx/uniformtypeidentifiers.html Kind regards, Alastair. -- http://alastairs-place.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: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: Long Time Dealy When getting Vended Object
Thanks, Ken for your Reply, Usually we will get time out exception when trying to get vended object that is not available but in the below case i use to get same exception after a long long delay and some times My app crashes Thanks SkiranKumar On 22-Apr-09, at 1:52 PM, Ken Thomases wrote: On Apr 22, 2009, at 1:14 AM, Kiran Kumar S wrote: Really going mad, it is taking long time response when i am trying to get vended Object from the remote machine which doesn't exist in the network. . I am facing same long time delay(more than 60 sec) when i am trying to get vended object from the remote machine which gone to sleep. Below is the code [...] On which line is the code blocking? You can find out by sampling the process from Activity Monitor or breaking into the process with the debugger. The delay you're seeing is probably the TCP connection timeout. On most systems, it will take about 9 minutes for TCP to give up all attempts to connect and timeout. I would hope that NSConnection would implement its own timeout mechanism as an alternative to allowing TCP to exhaust itself. As near as I can tell from reviewing the documentation, the reply timeout should govern the -rootProxy method. Since you're setting that, then I'm not sure why it's not working. This might be a bug, which you should file at http://bugreport.apple.com . Regards, 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: file extensions and Mime Type
Thanks Alastair. On Apr 22, 2009, at 11:51 AM, Alastair Houghton wrote: On 22 Apr 2009, at 10:31, rajesh wrote: Application we are currently working supports file drag from desktop It typically finds what type of file it is and then processes it accordingly. we don't want to solely depend on file extension. How can file Mime Type help us.. We have listed few mime types which we support and mapped them accordingly for processing. How can one retrieve the Mime type for a particular file? tried NSFileHandle and NSWorkSpace but of no help , (even googled around for hints , may be my search strings aren't effective ) OS X doesn't rely on MIME types, for a variety of reasons. You want to be using UTIs instead. Take a look here: http://developer.apple.com/macosx/uniformtypeidentifiers.html Kind regards, Alastair. -- http://alastairs-place.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: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
[NSOutlineView] _outlineCell and _trackingOutlineCell vs 64-bit
What's the official way to replace _outlineCell and
_trackingOutlineCell in Cocoa 64-bit?
I do this for 32-bit:
@implementation NSOutlineView (PrivateCells)
- (NSButtonCell *) outlineCell
{
return _outlineCell;
}
- (void) setOutlineCell:(NSButtonCell *) inButtonCell
{
if (_outlineCell!=inButtonCell)
{
[_outlineCell release];
_outlineCell=[inButtonCell retain];
}
}
- (NSButtonCell *) trackingOutlineCell
{
return _trackingOutlineCell;
}
- (void) setTrackingOutlineCell:(NSButtonCell *) inButtonCell
{
if (_trackingOutlineCell!=inButtonCell)
{
[_trackingOutlineCell release];
_trackingOutlineCell=[inButtonCell retain];
}
}
@end
But 64-bit is not happy with it at all.
---
I need to replace among other things the drawWithFrame:inView: method
to get a different rendering.
- (void)outlineView:(NSOutlineView *)outlineView
willDisplayOutlineCell:(id)cell forTableColumn:(NSTableColumn *)
tableColumn item:(id)item; is probably not what I'm looking for.
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Re: How to make app login window to look like OS X user login window ?
Mario Ku?njer wrote: Greetings everyone ! So the question is how to make a window that doesn't have a title bar and borders ? Actually I would like it to be just like user login window of OS X. This could also go for a so called Splash Screen on app launch. Thanks to all in advance. This is more a couple of philosophical digressions than anything to do with Cocoa, but I think there are a couple of things here that would benefit from a little extra scrutiny before you pursue them. I would argue against making an effort to make one of your windows look just like a security-related OS UI. You'll confuse users who don't realize there's a difference and likely anger some of those who do and decide you're trying to be deceptive. I would also argue that in general splash screens are an anachronism. They're a holdover from slow hard drives attached to slow CPUs and the idea that an app taking several seconds to finish preparing itself for user interaction was normal. Today there are relatively few apps for which that's the case. Splash screens are no longer the norm and it's fairly gratuitous to force a user to wait for a while as you essentially advertise a product they already own to them. ___ 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: Time since Login?
There's also the w command that you could run in an NSTask. Dave On Apr 22, 2009, at 1:21 AM, Uli Kusterer wrote: On 22.04.2009, at 04:43, Trygve Inda wrote: Is there also a way to determine some sort of overall system activity? There's Unix calls in the Kernel to do this, for instance host_statistics() with the HOST_CPU_LOAD_INFO selector. They're a little fiddly to use because everything you do in response to them can change their value again, but you might find a heuristic that works. We used them for some fun in one of our about screens, so I can't tell you whether they're suitable for what you're doing, but it looked OK. Cheers, -- Uli Kusterer The Witnesses of TeachText are everywhere... http://www.zathras.de ___ 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/davedelong%40me.com This email sent to davedel...@me.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
Problem implementing keyPathsForvaluesAffectingKey
The property canDelete is dependent on three other properties as shown
below.
Is there a problem with my implementation of +
keyPathsForValuesAffectingCanDelete with regard to the key path
@arrayController.canRemove?
Modifying property1 and property2 results in the re-evaluation of -
canDelete.
Removing all items in the array bound to arrayController does not
cause -canDelete to be evaluated, even though [arrayController
canRemove] becomes NO.
- (BOOL)canDelete
{
BOOL canRemove = [arrayController canRemove];
if (self.property1 self.property2) {
canRemove = NO;
}
return canRemove;
}
+ (NSSet *)keyPathsForValuesAffectingCanDelete
{
return [NSSet setWithObjects:@property1, @property2,
@arrayController.canRemove, nil];
}
Jonathan Mitchell
Central Conscious Unit
http://www.mugginsoft.com
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Re: Really big files and encodings
On Wed, Apr 22, 2009 at 1:57 AM, Seth Willits sli...@araelium.com wrote: So, I generally know what I should do, but the problem is that I don't know how to identify an encoding as fixed-width or variable. I could spend the time to look up each and every encoding on the internet, but there are kind of a lot of them :) And then my code wouldn't be future-proof if an encoding is added. Can anyone offer some insight into how I could dynamically determine an encoding's characteristics? Or maybe I should just hard code it/do it by hand because there are really very few cases to handle. Do your files have regularly occurring newlines like most normal text files? If so, then you can just scan for a \r or \n and break it up there. Virtually every encoding you'll encounter today encodes \r and \n as \r and \n, and will not use those bytes for anything else. 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
Bindings making NSNumberFormatter strange
Hi, I have an (editable) NSTextField with an NSNumberFormatter attached to it. The text field is bound to some other numerical property (if you want to test this, you can just make a simple AppController and put the @property(readwrite) int foo; inside it, and bind the text field to AppController's foo). My problem is that when I type some invalid stuff in the text field, such as some letters abc, I don't get a beep (which is the normal behaviour and the one I want), but I get some sheet popping up saying Formatting Error. I don't want this sheet. I want the beep like usual. How can I get rid of this sheet behaviour that the bindings is causing? And why is it even causing it? Second question: How can I make my text field just disallow entering of invalid characters in the first place (and producing beep when it is tried)? I want, as you probably guessed, a method that is compatible with bindings. Thanks very much, U _ Show them the way! Add maps and directions to your party invites. http://www.microsoft.com/windows/windowslive/products/events.aspx___ 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: Fast Forward and backward about QuickTime movie
According to the documentation for QTMovie, setting the playback rate using the -setRate: is rather straightforward. As for getting the button's state to align with playback, I would probably subclass the button, overriding -mouseUp: and -mouseDown: as appropriate. On Apr 21, 2009, at 11:05 PM, Bright wrote: Hi douglas, thank you for your help. Now I expect that the speed is fast when user press the button and the speed is normal when user unfasten the button. I am a fresh man,ha. I don't know how to do this. Could you tell more detail？thank you！ 2009-04-21，douglas welton douglas_wel...@earthlink.net To implement a fast (scan) forward or backward, simply set the movie's playback rate to a value greater than 1.0 ( or -1.0 for going backward). You'll want to experiment with want looks best for you, but a typical value might be 2.0, 4.0, 8.0... you get the picture. Depending on how you want to the user to interact with your fast forward or fast backward buttons, you'll want to create an action that interprets the button's click, then determines when to start the movie playing at the scan rate. later, douglas On Apr 21, 2009, at 10:39 AM, Bright wrote: Hi, By using the -stepForward: and the -stepBackward: methods of the QTMovie class, I realized the forward/backward a frame when I click the corresponding buttons. But my purpose is to implement fast forward and fast backward when I press the corresponding buttons for a while. The result should like the QuickTime Play's fast forward and fast backward buttons.How to implement it? Any help is useful for me. Thanks 网易邮箱，中国第一大电子邮件服务商 ___ 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: [NSOutlineView] _outlineCell and _trackingOutlineCell vs 64-bit
Howdy,
On Apr 22, 2009, at 4:37 AM, Iceberg-Dev wrote:
What's the official way to replace _outlineCell and
_trackingOutlineCell in Cocoa 64-bit?
I do this for 32-bit:
@implementation NSOutlineView (PrivateCells)
- (NSButtonCell *) outlineCell
{
return _outlineCell;
}
Note that what you are doing is not an official way to make things
work in 32-bit. It is strongly discouraged to access the ivars to
AppKit classes, and what you are doing may break in the future.
There is no way to replace the outlinecell -- please log a bug
requesting the ability to do so.
Thanks!
corbin
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Combine multiple sources into an NSOutlineView using NSTreeController
Hello, in my app, I have an outline view that is bound to an NSTreeController, which is connected to a Core Data entity. It works like a charm, but I would like to add category headings to the outline views categories and possibly even add some sources unrelated to the Core Data model. Is this possible in any way without resorting to reimplementing NSTreeController from scratch? I've thought about subclassing NSTreeController, but to be honest, I don't really understand how it interoperates with an NSOutlineView. It seems not to act as a conventional data source, as it apparently doesn't implement the methods defined in the corresponding protocol (I may be wrong here, maybe they're implemented privately). Any pointers much appreciated. --- Marcel Hansemann ___ 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: Problem implementing keyPathsForvaluesAffectingKey
On Apr 22, 2009, at 9:45 AM, jonat...@mugginsoft.com wrote: Removing all items in the array bound to arrayController does not cause -canDelete to be evaluated, even though [arrayController canRemove] becomes NO. How are you removing the items? Is it being done in a KVO-compliant manner? Regards, 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: Problem implementing keyPathsForvaluesAffectingKey
On 22 Apr 2009, at 17:02, Ken Thomases wrote:
On Apr 22, 2009, at 9:45 AM, jonat...@mugginsoft.com wrote:
Removing all items in the array bound to arrayController does not
cause -canDelete to be evaluated, even though [arrayController
canRemove] becomes NO.
How are you removing the items? Is it being done in a KVO-compliant
manner?
I think the following is okay in this regard:
- (IBAction)delete:(id)sender
{
if ([arrayController canRemove]) {
[arrayController remove:sender];
}
}
Regards,
Ken
Jonathan Mitchell
Central Conscious Unit
http://www.mugginsoft.com
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Re: Problem implementing keyPathsForvaluesAffectingKey
On 22 Apr 2009, at 15:45, jonat...@mugginsoft.com wrote: Is there a problem with my implementation of + keyPathsForValuesAffectingCanDelete You method signature is slightly wrong, it needs to be of the form +keyPathsForValuesAffectingValueForKey: Keith ___ 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
performSelectorOnMainThread primitives for withObject
Hey folks, Is this supposed to work or not? - (void) setActivated:(BOOL)theStatus; [view performSelectorOnMainThread:@selector(setActivated:) withObject:[NSNumber numberWithBool:YES] waitUntilDone:YES]; It does not seem like it works that way. Do I really have to use NSInvocation for this? cheers -- Torsten ___ 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: Problem implementing keyPathsForvaluesAffectingKey
On 22 Apr 2009, at 17:10, Keith Duncan wrote: On 22 Apr 2009, at 15:45, jonat...@mugginsoft.com wrote: Is there a problem with my implementation of + keyPathsForValuesAffectingCanDelete You method signature is slightly wrong, it needs to be of the form +keyPathsForValuesAffectingValueForKey: Keith I think it's okay. You can register you dependent keys either using + (NSSet *)keyPathsForValuesAffectingValueForKey:(NSString *)key or You can also achieve the same result by implementing a class method that follows the naming convention keyPathsForValuesAffectingKey, where Key is the name of the attribute (first letter capitalized) that is dependent on the values. But correct me again if I am wrong. Jonathan Mitchell Central Conscious Unit http://www.mugginsoft.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: How to make app login window to look like OS X user login window ?
On Wed, Apr 22, 2009 at 12:06 PM, Chris Williams ch...@clwill.com wrote: So you'd rather the user sits there wondering if this huge, highly complex application (like any Office or Adobe app) that takes 10-15 seconds to load, even longer on a slow laptop, is actually starting up, or should I click it again, or is my computer dead, or what the heck is going on here...? This is why the icon bounces in the Dock. If it's bouncing, it's launching. I don't really mind splash screens, although I find them to be pointless. However, if your splash screen does not go into the background when I click on another app while waiting for your app to load, then your app goes into the trash instantaneously. Much better than a splash screen is to *make your app launch faster*. Usually the startup tasks that take forever can be deferred until after the basics of the app have been set up. For example, your SQL connection doesn't need to be set up while the app is launching. Let it launch, set up your menu bar and welcome window and whatever else you have, *then* establish the connection. Your icon is no longer bouncing, your app is started, and you're in a much better environment for a long-running task. 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: performSelectorOnMainThread primitives for withObject
Hi Torsten, do you have more details on what the main thread implements and what you expect it to do, but doesn't do? I am using similar constructs and they work . Volker Am 22.04.2009 um 18:13 schrieb Torsten Curdt: Hey folks, Is this supposed to work or not? - (void) setActivated:(BOOL)theStatus; [view performSelectorOnMainThread:@selector(setActivated:) withObject:[NSNumber numberWithBool:YES] waitUntilDone:YES]; It does not seem like it works that way. Do I really have to use NSInvocation for this? cheers -- Torsten ___ 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/volker_lists%40ecoobs.de This email sent to volker_li...@ecoobs.de ___ 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: How to make app login window to look like OS X user login window ?
On 22 Apr 2009, at 17:06:10, Chris Williams wrote: So you'd rather the user sits there wondering if this huge, highly complex application (like any Office or Adobe app) that takes 10-15 seconds to load, even longer on a slow laptop, is actually starting up, or should I click it again, or is my computer dead, or what the heck is going on here...? Splash screens serve a purpose other than advertising. No program I know of actually delays the load to show the splash screen. Rather, they are a prettier way of saying loading I have an application that connects to a SQL server. The app itself isn't a slow loader, but the connection to the SQL server (often on another computer or on hard drives that may be asleep) can take 5, 10, or more seconds to establish. The splash screen shows that progress and let's the user know what things are being done. Far better than a spinning beach ball. Yes, but the vast majority of applications do not take that long to load. It may be a prettier way of saying Loading..., but unless it's got an actual progress bar on it it's just aggravating. I'll also throw in here that I have seen splash screens that have a higher window level than normal. This is just wrong. If you're app takes long enough to load to warrant a splash screen, it takes long enough to load for the user to get impatient and try to do something else. ___ 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: performSelectorOnMainThread primitives for withObject
On Apr 22, 2009, at 11:13 AM, Torsten Curdt wrote:
Is this supposed to work or not?
- (void) setActivated:(BOOL)theStatus;
[view performSelectorOnMainThread:@selector(setActivated:)
withObject:[NSNumber numberWithBool:YES] waitUntilDone:YES];
It does not seem like it works that way.
No, that doesn't work. It does not convert between NSNumber and BOOL
for you.
Do I really have to use NSInvocation for this?
If the setActivated: method is one of your own, you can change it to
take an NSNumber.
Alternatively, you can create a small wrapper method especially for
use with -performSelector... like so:
- (void) setActivatedWithNumber:(NSNumber*)theNumber
{
[self setActivated:[theNumber boolValue]];
}
Cheers,
Ken
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Re: performSelectorOnMainThread primitives for withObject
On Wed, Apr 22, 2009 at 12:13 PM, Torsten Curdt tcu...@vafer.org wrote: Hey folks, Is this supposed to work or not? - (void) setActivated:(BOOL)theStatus; [view performSelectorOnMainThread:@selector(setActivated:) withObject:[NSNumber numberWithBool:YES] waitUntilDone:YES]; It does not seem like it works that way. Is it documented to work that way? No. Do I really have to use NSInvocation for this? Of course not. There are always alternatives. You could, say, write a -setActivatedWithNSNumber: method that manually unboxes the number. You could write a higher-order message for main-thread performs. 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: performSelectorOnMainThread primitives for withObject
Is this supposed to work or not? - (void) setActivated:(BOOL)theStatus; [view performSelectorOnMainThread:@selector(setActivated:) withObject:[NSNumber numberWithBool:YES] waitUntilDone:YES]; This won't work since the boolean isn't auto-unboxed. Your method should accept an NSNumber wrapping a boolean or use another interthread messaging method such as distributed objects or an NSProxy subclass. Keith ___ 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: performSelectorOnMainThread primitives for withObject
You don't have to use NSInvocation -- you could instead define a
category on NSView that wrapped setActivated:
( STANDARD COMPOSED IN MAIL WARNING )
- (void) setActivatedWithObjectValue: (id) value
{
[self setActivated: [value boolValue]];
}
OR
- (void) setActivatedWithObjectValue: (id) value
{
[self setValue: value forKey: @activated];
}
OR, in your thread:
[view performSelectorOnMainThread:
@selector(setValuesForKeysWithDictionary:) withObject: [NSDictionary
dictionaryWithObjectsAndKeys: [NSNumber numberWithBool:YES],
@activated,nil] waitUntilDone: YES];
Hey folks,
Is this supposed to work or not?
- (void) setActivated:(BOOL)theStatus;
[view performSelectorOnMainThread:@selector(setActivated:)
withObject:[NSNumber numberWithBool:YES] waitUntilDone:YES];
It does not seem like it works that way.
Do I really have to use NSInvocation for this?
cheers
--
Torsten
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Re: iphone SDK session duration
What's wrong with the NSDate solution below? Luke On Apr 21, 2009, at 10:49 PM, Bess Ho wrote: I couldn't get any working responses from iphone developer forum or iphone meetup group. I am hoping that this group with more experience cocoa developers with understanding on MVC model, Xcode. On Tue, Apr 21, 2009 at 6:47 PM, Luke the Hiesterman luket...@apple.com wrote: Sounds like you've already answered your question. Luke On Apr 21, 2009, at 4:00 PM, Bess Ho wrote: Is this appropriate mailing list to ask iphone SDK questions? How do you measure session duration on a utility application with 3 ViewControllers? Use NSDate to mark the starting and ending the session and print the time lapsed on NSLog. -- Bess Ho ___ 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/luketheh%40apple.com This email sent to luket...@apple.com -- Bess Ho ___ 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: How to make app login window to look like OS X user login window ?
Below: From: Michael Ash michael@gmail.com I don't really mind splash screens, although I find them to be pointless. However, if your splash screen does not go into the background when I click on another app while waiting for your app to load, then your app goes into the trash instantaneously. Of course it doesn't demand being on top. Much better than a splash screen is to *make your app launch faster*. Usually the startup tasks that take forever can be deferred until after the basics of the app have been set up. For example, your SQL connection doesn't need to be set up while the app is launching Phhfffttt... The app is a database app. Without the connection, there is no app. Let it launch, set up your menu bar and welcome window and whatever else you have, *then* establish the connection. Your icon is no longer bouncing, your app is started, and you're in a much better environment for a long-running task. It used to do that. Then the first time you touched anything it hung to 10 seconds, and people thought the app was broken. You can load my app quickly by disabling the remember where I was last checkbox. Then it doesn't have to search the database several times, and load the disk directory tree, on startup. But no one does that. You seem to live in a world where every app is lightweight. This app has over a million records in the SQL database, and indexes well over a million files in an almost 2TB file set. Things take time. Letting your users know what's going on -- above and beyond a bouncing icon or a spinning beach ball -- is just common sense. ___ 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: How to make app login window to look like OS X user login window ?
Completely agreed. That's just arrogant and insulting. From: Benjamin Dobson importedfromsp...@googlemail.com I have seen splash screens that have a higher window level than normal. This is just wrong. If you're app takes long enough to load to warrant a splash screen, it takes long enough to load for the user to get impatient and try to do something else. ___ 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
NSApplication, AppleEvent and CFRunLoop source strange interaction
I'm working on a cross-platform framework, and am trying to finish up a parallel but portable message dispatch mechanism in the framework when its main thread is running in NSApplication. To this end, I'm using CFRunLoopSourceCreate/CFRunLoopAddSource as the framework message trigger because I can safely trigger the source from other threads using that mechanism. It is working nicely, except for the quit sequencing. In Linux/GTK, the analogous mechanism is installing the read end of a pipe using g_io_add_watch, writing to the pipe when a message is posted to my framework, and it works perfectly. For the Cocoa implementation, I have implemented an applicationShouldTerminate app delegate notification handler which posts a quit request to my framework (triggering it by way of the CFRunLoopSource) and returns NSTerminateCancel. That last detail is very unfortunate, but if I return NSTerminateLater the app goes into a modal state and neglects the CFRunLoop, with my framework's quit request not being received as a consequence. If I use the dock's application menu to issue a quit request, the kAEQuitApplication Apple event ends up in applicationShouldTerminate, then after returning NSTerminateCancel the framework message is processed by way of the run loop source. If the application decides that it can indeed quit, it sends [ns_application stop: ns_application] and the application quits successfully, returning through __CFRunRoolRun, ..., _DPSNextEvent, ..., -[NSApplication run], back out to NSApplicationMain. All good... The problem arises if the application, in the course of doing its thing decides to quit where its activity has been recently isolated to my framework through the CFRunLoop source. My custom quit request message is handled in that context, and I send [ns_application stop: ns_application], just as if the quit request had originated from an Apple event. Even though the call stack looks identical in these two cases (apple event from dock quit menu item or internally initiated quit), the run loop doesn't actually quit in the latter case. I tried following sending the stop message with an explicit call to CFRunLoopStop, with no luck. There seems to be something special about the context of having received kAEQuitApplication. Based on these observations, I tried having my framework, upon making a quit decision, post kAEQuitApplication to itself. Unfortunately, AESendMessage crashes inside of findPortByPSN - AECSD_LookupAppleEventPortByPSN - mach_msg - mach_msg_trap. I speculate that AESendMessage normally uses two IPC transactions, one to get the port and one to post to the port. Speculating again, but because the application is trying to talk to itself, it can't respond to its own request for the port and the transaction breaks down. Does anyone have a suggestion for a better way to solve the won't quit problem, or a better (thread safe) mechanism for triggering my framework than a CFRunLoop source? Also, a somewhat off-topic question from an objective-C newcomer. I see this in the successful quit case: _DPSNextEvent - AEProcessEvent - ... - -[NSApplication _shouldTerminate] - -[_docController:shouldTerminate:] - -[NSAppDelegate applicationShouldTerminate:] I wanted to try simply posting (asynchronously) a quit request right in the Mac Objective-C framework, specifically to _shouldTerminate, but I don't see how to do that. The only built-in Objective-C asynchronous messaging I found involved NSNotificationQueue, and it didn't seem like the right way to go. I would speculate that NSNotificationQueue would have to use a similar triggering mechanism to what I'm doing with the CFRunLoop source, and would break in the same manner. Am I wrong about NSNotificationQueue or overlooking a built-in Objective-C feature here? If it exists, it seems like that would also work around the modal state neglects run loop source problem I described earlier when returning NSTerminateLater from applicationShouldTerminate. Thanks, Brian Tietz ___ 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
non-movable fullscreen window
Initially I created a window with a title-bar (so, I created a window with border and resizable/movable properties). However, depending upon a request, the window should be converted into fullscreen dynamically (without titlebar, non-resizable, non-movable). I am trying to set the application into FullScreen manually (as the setFullScreen API changes the NSWindow handle and it is violating the rules of my application). I could resize the window to frame of the screen, but I couldn't find any way to change the window as 'borderless' dynamically. Though I set the MenuBar's visibility to false, it hides the titlebar, but window still moves when it is dragged. How can I prevent the window (in full-screen) from being moved ? I tried windowWillMove delegate, but is not helpful. Please suggest any method to prevent window getting moved (when it is being dragged) ? Thanks in advance, Praveen. ___ 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: [NSOutlineView] _outlineCell and _trackingOutlineCell vs 64-bit
On Apr 22, 2009, at 5:50 PM, Corbin Dunn wrote:
Howdy,
On Apr 22, 2009, at 4:37 AM, Iceberg-Dev wrote:
What's the official way to replace _outlineCell and
_trackingOutlineCell in Cocoa 64-bit?
I do this for 32-bit:
@implementation NSOutlineView (PrivateCells)
- (NSButtonCell *) outlineCell
{
return _outlineCell;
}
Note that what you are doing is not an official way to make things
work in 32-bit. It is strongly discouraged to access the ivars to
AppKit classes, and what you are doing may break in the future.
Well, the future is already there. You can't do for 64-bit
applications what you can do for 32-bit ones.
There is no way to replace the outlinecell
How could one then draw the disclosure triangle in white (and
correctly centered vertically) instead of black/dark gray (and
incorrectly centered)?
-- please log a bug requesting the ability to do so.
Will do.
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Re: Time since Login?
On Apr 22, 2009, at 12:00 AM, Jeremy W. Sherman wrote: How about just nice(1)-ing the process doing the intense processing to be lower-priority, and letting the scheduler sort it all out? It's my understanding that nice() prioritization is effectively meaningless on Darwin, at least according to several open-source projects who specifically don't bother with nice()-ing when __APPLE__ is defined. Was the scheduler changed to make this untrue in 10.5? -- Gwynne, Daughter of the Code This whole world is an asylum for the incurable. ___ 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: Really big files and encodings
Seth Willits wrote: In my app, I import data from potentially very large files. In the first pass, I simply mmap'd the entire file, created a string using CFStringCreateWithBytesNoCopy, and go about my business. This works great until it hits the address limit when it's running as a 32-bit process, so now in the second pass I want to rework it a bit to only mmap a chunk (128 MB) at a time. Now, if it were simply binary data, I could chop up the file however I wanted, but since the file I'm processing is actually a huge *text* file, I need to mmap an appropriate range so creating the string doesn't fail because a multi-byte character was split down the middle. Change the buffer management. Add a cushion to your mmap'ed chunk, say 1 MB, so you mmap in 129 MB at a time. When parsing the first 128 MB, everything proceeds normally, and there are no worries about splitting a multi-byte character. You can parse bytes after 128 MB because they're safely represented in the cushion area. When the get-next-string starting position moves into the cushion area, then you re-mmap the next chunk (advance by 128 MB, i.e. buffer minus cushion) and reposition your pointers in the buffer. Then you have about 128 MB of no worries again. Choose a cushion size suitable for the maximum length of multi-byte sequence. There's no magic to 1 MB, if something smaller suffices. And don't forget the combining character forms where multiple multi- byte characters should remain together. -- 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
Re: How to make app login window to look like OS X user login window ?
On Wed, Apr 22, 2009 at 1:07 PM, Chris Williams ch...@clwill.com wrote: Below: From: Michael Ash michael@gmail.com I don't really mind splash screens, although I find them to be pointless. However, if your splash screen does not go into the background when I click on another app while waiting for your app to load, then your app goes into the trash instantaneously. Of course it doesn't demand being on top. Very good! Most don't, but some are really bad that way. Much better than a splash screen is to *make your app launch faster*. Usually the startup tasks that take forever can be deferred until after the basics of the app have been set up. For example, your SQL connection doesn't need to be set up while the app is launching Phhfffttt... The app is a database app. Without the connection, there is no app. Let it launch, set up your menu bar and welcome window and whatever else you have, *then* establish the connection. Your icon is no longer bouncing, your app is started, and you're in a much better environment for a long-running task. It used to do that. Then the first time you touched anything it hung to 10 seconds, and people thought the app was broken. I'm not saying that you load it lazily on demand. I'm saying that you get the app up and running in a minimal fashion, and *then* establish the connection. Do it immediately, but after you've officially launched. If you do it modelessly, then the user can still access whatever features don't rely on the connection. That might just be the about box, but maybe that's what they're after. If you do it modally then at least your dock icon stopped bouncing and you can easily switch to the app to check on its progress and such. You can load my app quickly by disabling the remember where I was last checkbox. Then it doesn't have to search the database several times, and load the disk directory tree, on startup. But no one does that. You seem to live in a world where every app is lightweight. This app has over a million records in the SQL database, and indexes well over a million files in an almost 2TB file set. Things take time. Letting your users know what's going on -- above and beyond a bouncing icon or a spinning beach ball -- is just common sense. Sure, I'm just saying that there are generally better ways to let them know than a splash screen. 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
Scaling an entire CGPath?
Hi, I need to take a CGPath (a set of lines, curves, etc.) and scale the entire thing as a whole. Is there a simple way to do this? Do I need to use CGPathApply somehow? ~m ___ 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: NSApplication, AppleEvent and CFRunLoop source strange interaction
On Apr 21, 2009, at 9:10 PM, Brian Tietz wrote: I'm working on a cross-platform framework, and am trying to finish up a parallel but portable message dispatch mechanism in the framework when its main thread is running in NSApplication. To this end, I'm using CFRunLoopSourceCreate/CFRunLoopAddSource as the framework message trigger because I can safely trigger the source from other threads using that mechanism. It is working nicely, except for the quit sequencing. In Linux/GTK, the analogous mechanism is installing the read end of a pipe using g_io_add_watch, writing to the pipe when a message is posted to my framework, and it works perfectly. For the Cocoa implementation, I have implemented an applicationShouldTerminate app delegate notification handler which posts a quit request to my framework (triggering it by way of the CFRunLoopSource) and returns NSTerminateCancel. That last detail is very unfortunate, but if I return NSTerminateLater the app goes into a modal state and neglects the CFRunLoop, with my framework's quit request not being received as a consequence. It's not neglecting the run loop. It's just running it in a different mode. The documentation for NSTerminateLater says it's running it in the NSModalPanelRunLoopMode. So, just add your run loop source in that same mode, in addition to the default mode. Then, you can use NSTerminateLater and all of your headaches vanish. 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: Time since Login?
Trygve Inda wrote: (b) elapsed time since startup Boot-time is available from sysctl, name kern.boottime. There's also a function, whose name I forget, that returns microseconds since startup. I wouldn't be surprised if there were additional ways to get this info. My goal is to delay some intense processing until the system is fully up and running as it seems to do a lot of housekeeping at startup. Is there also a way to determine some sort of overall system activity? If the user has started your program to do something, then why is your program trying to second-guess the OS's scheduler? Maybe you should rely on the scheduler to allocate resources, instead of second- guessing what a suitable level of inactivity is. It may be enough for me if I can just delay a few things until 1 minute after login. What is this for: A user-launched app? An auto-launched app? A daemon/agent? Again, is the user expecting your program to do something immediately, or is the user aware that the action may be delayed? -- 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
Re: How to make app login window to look like OS X user login window ?
Michael Ash wrote: I'm not saying that you load it lazily on demand. I'm saying that you get the app up and running in a minimal fashion, and *then* establish the connection. Do it immediately, but after you've officially launched. If you do it modelessly, then the user can still access whatever features don't rely on the connection. That might just be the about box, but maybe that's what they're after. If you do it modally then at least your dock icon stopped bouncing and you can easily switch to the app to check on its progress and such. I suggest showing the long-running action using the app's normal way of showing long-running actions, whatever that might be. An example of this is Safari, if it has a home page that takes some time to load. There's no splash or loading screen; Safari just presents its normal window with its normal connecting and loading indicator, exactly the same as if you'd clicked a link to a page that takes a long time to load. If the only possible long-running action for the app occurs at launch, then an I'm working splash screen or other window might make sense. But if the app has a normal way of showing the user that an action is taking a long time to complete, I recommend using that over a specialized launch-only window. -- 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
Re: [NSOutlineView] _outlineCell and _trackingOutlineCell vs 64-bit
On Apr 22, 2009, at 10:29 AM, Iceberg-Dev wrote:
On Apr 22, 2009, at 5:50 PM, Corbin Dunn wrote:
Howdy,
On Apr 22, 2009, at 4:37 AM, Iceberg-Dev wrote:
What's the official way to replace _outlineCell and
_trackingOutlineCell in Cocoa 64-bit?
I do this for 32-bit:
@implementation NSOutlineView (PrivateCells)
- (NSButtonCell *) outlineCell
{
return _outlineCell;
}
Note that what you are doing is not an official way to make things
work in 32-bit. It is strongly discouraged to access the ivars to
AppKit classes, and what you are doing may break in the future.
Well, the future is already there. You can't do for 64-bit
applications what you can do for 32-bit ones.
It may break in future releases of your 32-bit applications too. We
may change how the ivar is used, or decide not to use it at all.
There is no way to replace the outlinecell
How could one then draw the disclosure triangle in white
Leopard has a bug with them looking too dark; that is a known issue,
and it will be fixed. There is no easy way to make them white, but in
the -willDisplayOutlineCell method you can replace the image on the
NSButtonCell.
(and correctly centered vertically) instead of black/dark gray (and
incorrectly centered)?
Override frameOfOutlineCellAtRow: and place it where you want.
-- please log a bug requesting the ability to do so.
Will do.
thanks!
corbin
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Re: performSelectorOnMainThread primitives for withObject
It does not seem like it works that way. Is it documented to work that way? No. I wish it would always be that simple with documentation :) But seriously - I could have just missed it. Stuff like that do happens sometimes ;) Do I really have to use NSInvocation for this? Of course not. There are always alternatives. You could, say, write a -setActivatedWithNSNumber: method that manually unboxes the number. That's what I am doing now. But that makes me feel dirty. You could write a higher-order message for main-thread performs. Just had the idea to add an un-boxed version of performSelectorOnMainThread to NSObject via Category. But could you elaborate on the HOM a bit. Not sure I can follow there. cheers -- Torsten ___ 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: Scaling an entire CGPath?
On Apr 22, 2009, at 10:54 AM, Maryanna Rogers wrote: I need to take a CGPath (a set of lines, curves, etc.) and scale the entire thing as a whole. Is there a simple way to do this? Do I need to use CGPathApply somehow? Typically you would just scale the context that you are drawing the path to... -- David Duncan Apple DTS Animation and Printing ___ 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: Scaling an entire CGPath?
This path will never be drawn. ~m On Wed, Apr 22, 2009 at 8:23 PM, David Duncan david.dun...@apple.com wrote: On Apr 22, 2009, at 10:54 AM, Maryanna Rogers wrote: I need to take a CGPath (a set of lines, curves, etc.) and scale the entire thing as a whole. Is there a simple way to do this? Do I need to use CGPathApply somehow? Typically you would just scale the context that you are drawing the path to... -- David Duncan Apple DTS Animation and Printing ___ 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: How to make app login window to look like OS X user login window ?
On Wed, Apr 22, 2009 at 9:06 AM, Chris Williams ch...@clwill.com wrote: blah blah... Far better than a spinning beach ball. If written well an application can launch quickly and then get into UI that informs the user that a lengthy process is taking place while ideally letting them do other tasks that aren't blocked by the length task. A splash screen is generally a bad way to do that on Mac OS X, as is causing the beach ball to show. Review... (can't find the blob of text that I recall explicitly talking about splash screens) http://developer.apple.com/documentation/userexperience/Conceptual/AppleHIGuidelines/XHIGHIDesign/XHIGHIDesign.html#//apple_ref/doc/uid/TP3353-TPXREF106 http://developer.apple.com/documentation/userexperience/Conceptual/AppleHIGuidelines/XHIGHIDesign/XHIGHIDesign.html#//apple_ref/doc/uid/TP3353-TPXREF110 -Shawn ___ 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
objc_exception_throw prior to launching nib file
Hi All, I have a Core Data app that I am trying to debug. If I simply run it, the main window loads fine. If I try to run in debug mode, an exception is thrown before even loading the main nib. This problem seems to have started when I tried to put manual breakpoints in the code. Now, just hitting debug/run causes it to hang, regardless of whether manual breakpoints are activated. (objc_exception_throw is symbolic). Since none of the methods below are things I have written, I'm not sure where to go from here. How can I go about finding out what is causing this? Thanks. Backtrace to follow #0 0x93192e17 in objc_exception_throw () #1 0x92022eeb in +[NSException raise:format:arguments:] () #2 0x92022f2a in +[NSException raise:format:] () #3 0x95140ff5 in -[_NSManagedProxy _managedObjectContext] () #4 0x95141026 in -[_NSManagedProxy _persistentStoreCoordinator] () #5 0x951410b4 in -[_NSManagedProxy _entity] () #6 0x95141379 in -[_NSManagedProxy fetchRequestWithSortDescriptors:limit:] () #7 0x94fe38cc in -[NSArrayController(NSManagedController) defaultFetchRequest] () #8 0x95140a74 in -[NSObjectController(NSManagedController) _executeFetch:didCommitSuccessfully:actionSender:] () #9 0x9527003e in _NSSendCommitEditingSelector () #10 0x95056d54 in -[NSController _controllerEditor:didCommit:contextInfo:] () #11 0x92028a3d in __invoking___ () #12 0x92028428 in -[NSInvocation invoke] () #13 0x920284f8 in -[NSInvocation invokeWithTarget:] () #14 0x90a4922e in __NSFireDelayedPerform () #15 0x91fa9b25 in CFRunLoopRunSpecific () #16 0x91fa9cd8 in CFRunLoopRunInMode () #17 0x901b62c0 in RunCurrentEventLoopInMode () #18 0x901b6012 in ReceiveNextEventCommon () #19 0x901b5f4d in BlockUntilNextEventMatchingListInMode () #20 0x94c41d7d in _DPSNextEvent () #21 0x94c41630 in -[NSApplication nextEventMatchingMask:untilDate:inMode:dequeue:] () #22 0x94c3a66b in -[NSApplication run] () #23 0x94c078a4 in NSApplicationMain () #24 0x1d70 in main (argc=1, argv=0xb434) at /Users/../ main.m:13 ___ 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: Time since Login?
On 4/22/09 3:43 AM, Trygve Inda said: (b) elapsed time since startup The old TickCount() API returns this. -- Sean McBride, B. Eng s...@rogue-research.com Rogue Researchwww.rogue-research.com Mac Software Developer Montréal, Québec, Canada ___ 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: objc_exception_throw prior to launching nib file
On Apr 22, 2009, at 12:36 PM, Daniel Child wrote: Since none of the methods below are things I have written, I'm not sure where to go from here. How can I go about finding out what is causing this? Start by printing the exception to the console using the po command when the exception is thrown. Intel 32: po *(int *)($ebp+8) Intel 64: po $rdi PPC: po $r3 What does it say? 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
-[NSSharedWorkspace openFile:]: Application exits with status 255
I'm running into an issue that's above my skill level and could really use some guidance. My application has an SUID-root update utility (I know that's unusual, but it's an internal application that needs to be able to update itself even when the logged-in user isn't privileged) stored inside the application bundle. It downloads the update, sends a message back to the parent application that it's OK to quit, moves the new copy into place, and launches it. That last bit is giving me issues. I'm using -[NSWorkspace openFile:] to do the actual relaunching. It returns YES, but my application doesn't launch and com.apple.launchd[152] ([0x0-0xb80b8].com.mycompany.MyApplication[3836]) Exited with exit code: 255 appears in the Console. I noticed that at this point, if I use open (on the command line) to try to launch my (updated) application, it works. However, if I sudo open, it prints LSOpenFromURLSpec() failed with error -10810 for the file -10810 translates to Unexpected internal error. If I touch the application bundle, open starts working as me and as root. Following this thread, I tried calling utimes() from my helper before openFile:, but run into the same condition. I've also tried LSRegisterURL() with no change. Can anyone give me a hint as to what's happening here? I'm lost. ___ 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: file extensions and Mime Type
On 4/22/09 11:31 AM, rajesh said: We have listed few mime types which we support and mapped them accordingly for processing. How can one retrieve the Mime type for a particular file? The filesystem does not store a file's mime type nor its UTI as part of the file's metadata. The only filesystem metadata available is the file name extension and HFS type. Those are what Launch Services consults to decide the UTI. -- Sean McBride, B. Eng s...@rogue-research.com Rogue Researchwww.rogue-research.com Mac Software Developer Montréal, Québec, Canada ___ 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: Scaling an entire CGPath?
On Apr 22, 2009, at 11:25 AM, Maryanna Rogers wrote: This path will never be drawn. Then we probably need to know what you are trying to accomplish to give you the best advice. -- David Duncan Apple DTS Animation and Printing ___ 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: objc_exception_throw prior to launching nib file
It says Running… (gdb) po $rdi Value can't be converted to integer. (gdb) On Apr 22, 2009, at 2:56 PM, Nick Zitzmann wrote: On Apr 22, 2009, at 12:36 PM, Daniel Child wrote: Since none of the methods below are things I have written, I'm not sure where to go from here. How can I go about finding out what is causing this? Start by printing the exception to the console using the po command when the exception is thrown. Intel 32: po *(int *)($ebp+8) Intel 64: po $rdi PPC: po $r3 What does it say? 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
Re: objc_exception_throw prior to launching nib file
On Apr 22, 2009, at 1:28 PM, Daniel Child wrote: It says Running… (gdb) po $rdi Value can't be converted to integer. (gdb) Are you sure your program is running as Intel 64? The $rdi register is only available to X86-64 applications. In 32-bit Intel apps, arguments to functions are placed on the stack, which is in the $ebp register. 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
Re: non-movable fullscreen window
Hi Praveen, 1) At present (leopard), you can't dynamically change the windows style from bordered to non-bordered. The style is set at initialization and you can't change it after that. See the Window Programming Guide section for Setting a Window's Appearance 2) When you say you use the setFullScreen API do you mean the old Carbon function? Or do you mean using - enterFullScreenMode:WithOptions: on the window's contentView? This later option works quite well and I think it is probably what you are looking for. The documentation has more details 3) In regards to dragging your newly-enlarged window, have you tried using NSWindow's -setMovableByWindowBackground: method? Check the documentation, if you still need this method. regards, douglas On Apr 22, 2009, at 9:15 AM, Praveen Innamuri wrote: Initially I created a window with a title-bar (so, I created a window with border and resizable/movable properties). However, depending upon a request, the window should be converted into fullscreen dynamically (without titlebar, non-resizable, non-movable). I am trying to set the application into FullScreen manually (as the setFullScreen API changes the NSWindow handle and it is violating the rules of my application). I could resize the window to frame of the screen, but I couldn't find any way to change the window as 'borderless' dynamically. Though I set the MenuBar's visibility to false, it hides the titlebar, but window still moves when it is dragged. How can I prevent the window (in full-screen) from being moved ? I tried windowWillMove delegate, but is not helpful. Please suggest any method to prevent window getting moved (when it is being dragged) ? Thanks in advance, Praveen. ___ 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: Scaling an entire CGPath?
Sorry if I am missing the point, but is [CG|NS]AffineTransform what you are looking for? I have only used them in at the Cocoa view level (NSBezierPath, NSAffineTransform), so my information may not be correct for CGPath. The Transforms section of the Quartz 2D guide may be helpful: file:///Developer/Documentation/DocSets/com.apple.ADC_Reference_Library.Cor eReference.docset/Contents/Resources/Documents/documentation/GraphicsImaging /Conceptual/drawingwithquartz2d/dq_affine/dq_affine.html -- Message: 3 Date: Wed, 22 Apr 2009 19:54:55 +0200 From: Maryanna Rogers maryanna.rog...@gmail.com Subject: Scaling an entire CGPath? To: Cocoa Dev Dev cocoa-dev@lists.apple.com Message-ID: 770943e00904221054h56c04c3fj4029c2aba47b1...@mail.gmail.com Content-Type: text/plain; charset=ISO-8859-1 Hi, I need to take a CGPath (a set of lines, curves, etc.) and scale the entire thing as a whole. Is there a simple way to do this? Do I need to use CGPathApply somehow? ~m ___ 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: Opening file with C++ iostream from application bundle
You need to use a full path, not count on the default directory--and others have provided code to get the path. -- Scott Ribe scott_r...@killerbytes.com http://www.killerbytes.com/ (303) 722-0567 voice ___ 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: Scaling an entire CGPath?
On Apr 22, 2009, at 11:25 AM, Maryanna Rogers wrote: This path will never be drawn. ~m On Wed, Apr 22, 2009 at 8:23 PM, David Duncan david.dun...@apple.com wrote: On Apr 22, 2009, at 10:54 AM, Maryanna Rogers wrote: I need to take a CGPath (a set of lines, curves, etc.) and scale the entire thing as a whole. Is there a simple way to do this? Do I need to use CGPathApply somehow? Typically you would just scale the context that you are drawing the path to... Without further information as to what you're trying to accomplish, we can't see what the real problem is. Making some assumptions: 1. If you are constructing the path yourself, surely simple multiplication of the path coordinates by the scale factor(s) prior to adding the specific element to the path should do the trick. 2. If you have been handed a path and need to scale it, you can use a Path Applier function in conjunction with CGPathApply to play back each element of the path.See CGPathApply, CGPathApplierFunction, and CGPathElement for further details. Cheers, . . . . . . . .Henry ___ 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
NSProgressIndicator
I have a NSProgressIndicator that indicates the progress of a disk saving job. Initially it's hidden so: [myIndicator setMaxValue:count]; [myIndicator setMinValue:0]; [myIndicator setDoubleValue:0]; [myIndicator setHidden:NO]; [myIndicator displayIfNeeded]; Then I do the job calling: [myIndicator incrementBy:1]; [myIndicator displayIfNeeded]; And finally: [myIndicator setHidden:YES]; [myIndicator displayIfNeeded]; [myIndicator setMaxValue:0]; [myIndicator setMinValue:0]; [myIndicator setDoubleValue:0]; The first time all works perfectly, but the second, when I reset the indicator, no: the indicator is displayed but remains blank, that is it doesn't show any progress. What's going wrong? Thank you all in advance, best regards, livio. ___ 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: objc_exception_throw prior to launching nib file
Well, I think so. I thought all Core2 Duos run 64-bit. The build settings are for Xcode 3.1, OS 10.5. Are there any other settings I should be concerned with? Also, tried the Intel 32-bit, and that also said it couldn't be converted to an integer. On Apr 22, 2009, at 3:31 PM, Nick Zitzmann wrote: On Apr 22, 2009, at 1:28 PM, Daniel Child wrote: It says Running… (gdb) po $rdi Value can't be converted to integer. (gdb) Are you sure your program is running as Intel 64? The $rdi register is only available to X86-64 applications. In 32-bit Intel apps, arguments to functions are placed on the stack, which is in the $ebp register. 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
Re: objc_exception_throw prior to launching nib file
On Apr 22, 2009, at 2:13 PM, Daniel Child wrote: Well, I think so. I thought all Core2 Duos run 64-bit. Yes, but what is the architecture of your program? Is it i386 or is it x86_64? If it's the former, then it is not an Intel 64 program. If you don't know, then it's probably i386. Also, tried the Intel 32-bit, and that also said it couldn't be converted to an integer. Did you try it exactly as I wrote it earlier? And are you running the command just after the debugger breaks? 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
Re: objc_exception_throw prior to launching nib file
You're right. (gdb) po $rdi Value can't be converted to integer. (gdb) po *(int *)($ebp+8) Cannot access memory at address 0x1 (gdb) On Apr 22, 2009, at 4:16 PM, Nick Zitzmann wrote: On Apr 22, 2009, at 2:13 PM, Daniel Child wrote: Well, I think so. I thought all Core2 Duos run 64-bit. Yes, but what is the architecture of your program? Is it i386 or is it x86_64? If it's the former, then it is not an Intel 64 program. If you don't know, then it's probably i386. Also, tried the Intel 32-bit, and that also said it couldn't be converted to an integer. Did you try it exactly as I wrote it earlier? And are you running the command just after the debugger breaks? 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
Re: Really big files and encodings
On Apr 22, 2009, at 8:09 AM, Michael Ash wrote: Do your files have regularly occurring newlines like most normal text files? If so, then you can just scan for a \r or \n and break it up there. Virtually every encoding you'll encounter today encodes \r and \n as \r and \n, and will not use those bytes for anything else. You know what... I should have thought of that. :-) I remembered we all talked about something very similar on a previous thread and I now I remember that I even brought up this same idea since I'm doing it elsewhere in this same app, but I totally didn't even think of it this time. Heh. Well shoot. Nevermind. :-) Thanks, -- Seth Willits ___ 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: objc_exception_throw prior to launching nib file
On Apr 22, 2009, at 2:20 PM, Daniel Child wrote: (gdb) po *(int *)($ebp+8) Cannot access memory at address 0x1 (gdb) Something's still not right here. On Intel 32, $ebp+8 points to the first argument in a function call, which would be the NSException object passed into objc_exception_throw(). Are you sure you are trying this after, and **only** after, the debugger hits objc_exception_throw(), but before continuing execution? If so, are you sure you are looking at the top of the stack? If it helps, I always put the following two debugger commands into my objc_exception_throw breakpoints: po *(int *)($ebp+8) po $rdi (The latter is for debugging 64-bit apps, since there's apparently no way to set debugger commands on a per-architecture basis.) 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
Identical Attributes, Only one works
I realize that this question is very vague, but I'm just baffled but it. I have an NSLevelIndicator with its value bound to my model's myEntity.Selection.Priority attribute. Priority is a required Float with a min value of 0, max of 3, and default of 1. How it functions is that I have a table view, and I want to select an item in a table view and modify its priority. The problem is that if I select an item, modify the priority through the level indicator, go to another item, and then click back to the original item, the level indicator has gone back to its default value. I had no idea, so I created an attribute called myPriority and made it exactly the same as priority. I then bound the level indicator's value to my model's myEntity.Selection.myPriority attribute. Except this time it works. So I do a project find to find any files that mention priority, and I hit on a file. The level indicator also has an IBAction and an IBOutlet, both of which are links to this file. So I thought, it must be this, except all the code in that files is commented out. Right now, all that should be happening is the simplest behavior of setting the priority, and yet it works with one and doesn't work with another. Does anyone have any ideas of further places to look? Thanks, - Walker Argendeli ___ 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: Problem implementing keyPathsForvaluesAffectingKey
On 4/22/09 3:45 PM, jonat...@mugginsoft.com said:
+ (NSSet *)keyPathsForValuesAffectingCanDelete
{
return [NSSet setWithObjects:@property1, @property2,
@arrayController.canRemove, nil];
}
I, and others, have never been able to get dependent key paths working
when you traverse a controller like that. See for example:
http://www.cocoabuilder.com/archive/message/cocoa/2008/6/18/210478
--
Sean McBride, B. Eng s...@rogue-research.com
Rogue Researchwww.rogue-research.com
Mac Software Developer Montréal, Québec, Canada
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Re: non-movable fullscreen window
On 4/22/09 6:45 PM, Praveen Innamuri said: Initially I created a window with a title-bar (so, I created a window with border and resizable/movable properties). However, depending upon a request, the window should be converted into fullscreen dynamically (without titlebar, non-resizable, non-movable). I am trying to set the application into FullScreen manually (as the setFullScreen API changes the NSWindow handle and it is violating the rules of my application). I could resize the window to frame of the screen, but I couldn't find any way to change the window as 'borderless' dynamically. You can't. rdar://6037134 Though I set the MenuBar's visibility to false, it hides the titlebar, but window still moves when it is dragged. How can I prevent the window (in full-screen) from being moved ? I tried windowWillMove delegate, but is not helpful. Please suggest any method to prevent window getting moved (when it is being dragged) ? Have you searched the archives for suggestions about implementing full screen? This has been discussed many times. -- Sean McBride, B. Eng s...@rogue-research.com Rogue Researchwww.rogue-research.com Mac Software Developer Montréal, Québec, Canada ___ 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: How to make app login window to look like OS X user login window ?
Le 22 avr. 09 à 20:31, Shawn Erickson a écrit : On Wed, Apr 22, 2009 at 9:06 AM, Chris Williams ch...@clwill.com wrote: blah blah... Far better than a spinning beach ball. If written well an application can launch quickly and then get into UI that informs the user that a lengthy process is taking place while ideally letting them do other tasks that aren't blocked by the length task. A splash screen is generally a bad way to do that on Mac OS X, as is causing the beach ball to show. And the worst is that if the long task blocks the event loop, there is no way to cancel it… ___ 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: objc_exception_throw prior to launching nib file
OK, I've set those commands and got this. Running… Cannot perform operation without a managed object context Value can't be converted to integer. (gdb) I'm not sure why it thinks it needs one BEFORE I do anything. I described things slightly incorrectly. If I set a breakpoint: the window (from nib) appears then gdb comes up What is strange is that the breakpoint should not be executed I press a button in the window. In fact, if I don't set a manual breakpoint and run the app, I can in fact press the button and perform an action. (The action needs to be debugged, but that is a separate matte.) The problem is not being able to debug the portion of code after the window appears. If a managed object context were needed at that point, it should have said something when I run without code. No? On Apr 22, 2009, at 4:28 PM, Nick Zitzmann wrote: On Apr 22, 2009, at 2:20 PM, Daniel Child wrote: (gdb) po *(int *)($ebp+8) Cannot access memory at address 0x1 (gdb) Something's still not right here. On Intel 32, $ebp+8 points to the first argument in a function call, which would be the NSException object passed into objc_exception_throw(). Are you sure you are trying this after, and **only** after, the debugger hits objc_exception_throw(), but before continuing execution? If so, are you sure you are looking at the top of the stack? If it helps, I always put the following two debugger commands into my objc_exception_throw breakpoints: po *(int *)($ebp+8) po $rdi (The latter is for debugging 64-bit apps, since there's apparently no way to set debugger commands on a per-architecture basis.) 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
Removing or ignoring lineWidth property of an NSBezierPath instance
I am trying to find a way to ensure that a series of NSBezierPaths are drawn
using [NSBezierPath defaultLineWidth] value. However, contrary to
documentation and expectation, my paths seem to automatically assign
themselves the value 1.0 for their own lineWidth property.
First, the documentation for NSBezierPath¹s -(CGFloat)lineWidth method
states that: If no value was set explicitly for the receiver, this method
returns the default line width. This suggests that a newly created
NSBezierPath should have no value set for lineWidth.
The following custom view class demonstrates the problem:
@interface AppView : NSView {
NSMutableArray*pathsToDraw;
}
@end
@implementation AppView
- (id)initWithFrame:(NSRect)frame {
self = [super initWithFrame:frame];
if (self) {
pathsToDraw = [NSMutableArray array];
[pathsToDraw retain];
//Creates a series of 10 overlapping boxes stored in an array
CGFloat boxWidth = 15.0;
CGFloat boxHeight = 12.0;
for (int i = 0; i 10; i++) {
NSBezierPath *newPath = [NSBezierPath
bezierPathWithRect:NSMakeRect(i * (boxWidth + 1.0), i * (boxHeight + 1.0), i
* boxWidth, i * boxHeight)];
[pathsToDraw addObject:newPath];
//Note, we never call [newPath setLineWidth], so none of the paths should
have its lineWidth property set
}
}
return self;
}
- (void)drawRect:(NSRect)rect {
[[NSColor blackColor] set];
//set default to an arbitrary number other than 1.0 This is the width we
want the paths to be drawn with.
[NSBezierPath setDefaultLineWidth:4.0];
for (NSBezierPath *path in pathsToDraw) {
/* The following line logs the specific and default line widths. Since we
never set any lineWidth for any of the paths in the array, these values
should be identical, or, at least that¹s what the documentation suggests.
*/
NSLog(@Path width = %0.3f; default width = %0.3f, [path
lineWidth], [NSBezierPath defaultLineWidth]);
[path stroke];
}
// The following line proves that the defaultLineWidth class property of
NSBezierPath is functioning, as the resulting box is drawn at the correct
thickness
[NSBezierPath strokeRect:[self bounds]];
}
@end
The output from the NSLog statement is the following line (10 times):
2009-04-22 16:30:21.640 BezPathLineWidthTester[7347:10b] Path width = 1.000;
default width = 4.000
Changing the value passed to [NSBezierPath setDefaultLineWidth:] has no
effect on the boxes drawn out of the array, although it does effect the
³anonymous² path created by the strokeRect command.
So, my question(s): is there a way to remove or ignore an NSBezierPath¹s
individual lineWidth property in favor of the default? (Note that setting
the individual path¹s lineWidth property to 0.0 will not work because a
lineWidth of 0.0 has a specific meaning to the drawing system. Since this
property is a float, it can¹t be set to nil). Is this indeed a bug (either
in NSBezierPath or in the documentation), or am I overlooking something?
(By way of further explanation, the project this arises in involves a set of
bezier paths that are generated in one program and archived for use in a
separate program. I would like the lineWidth and other drawing specifics
such as line/fill colors to be controlled by the view where the reusable
paths are drawn, rather than a property of the paths themselves).
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NSOpenPanel listing .app's and Mac OS X executables
Hi, Is there any way when a NSOpenPanel is launched, only .app's and Mac OS X executables are allowed to select and gray out all the other file types? Thanks Arun ___ 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: Core Data Fetches + Transient Properties + NSPredicateEditor = Sadness
On Apr 22, 2009, at 02:12, Mike Abdullah wrote: On 22 Apr 2009, at 08:48, Ben Trumbull wrote: Of course, why Apple couldn't have then added automatic support for in-memory matching as the second step I don't know Probably because nobody ever cared enough to file an enhancement request, and it didn't occur to us that writing 1 line of code to call filteredArrayWithPredicate was so troublesome. Calling -filteredArrayWithPredicate is no hassle, but for a large predicate, it has the bad performance of comparing a bunch of the persistent properties all over again, despite already knowing they'll match the predicate. Since I assume Core Data must do some kind of internal splitting up of the predicate in order to perform its fetch, I'd have thought it is in a good position to know what the remaining transient portion of the predicate is. You assume incorrectly. CoreData simply translates the predicate to SQL and passes it down to SQLite as a WHERE clause. Hence the lack of support for transient properties: SQLite has no idea what to do when you ask it to qualify by a column that doesn't exist in its schema. +Melissa ___ 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: -[NSSharedWorkspace openFile:]: Application exits with status 255
You would be very well served to read TN2083, Daemons and Agents: http://developer.apple.com/technotes/tn2005/tn2083.html . You seem to be unaware of some of the pretty important architectural considerations that will affect your implementation. Notably, some things changed in Leopard that will have significant effects on your ability to communicate between applications. --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: Bindings making NSNumberFormatter strange
Noone has an idea? To elaborate, when not using bindings, the default behavior of text fields with a number formatter is that when a user tries to enter abc in it, the text field refuses to lose focus and makes a beeping sounds. However, when the text field's value binding has been set, a sheet is shown, which I think is a bad user experience. In fact it would be even better to just disallow entering of invalid characters in the first place. But such a method would have to work even if the text field's value binding is set. Thank you, U From: ulaibee...@hotmail.com To: cocoa-dev@lists.apple.com Date: Wed, 22 Apr 2009 15:26:51 + Subject: Bindings making NSNumberFormatter strange Hi, I have an (editable) NSTextField with an NSNumberFormatter attached to it. The text field is bound to some other numerical property (if you want to test this, you can just make a simple AppController and put the @property(readwrite) int foo; inside it, and bind the text field to AppController's foo). My problem is that when I type some invalid stuff in the text field, such as some letters abc, I don't get a beep (which is the normal behaviour and the one I want), but I get some sheet popping up saying Formatting Error. I don't want this sheet. I want the beep like usual. How can I get rid of this sheet behaviour that the bindings is causing? And why is it even causing it? Second question: How can I make my text field just disallow entering of invalid characters in the first place (and producing beep when it is tried)? I want, as you probably guessed, a method that is compatible with bindings. Thanks very much, U . _ More than messages–check out the rest of the Windows Live™. http://www.microsoft.com/windows/windowslive/___ 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: NSOpenPanel listing .app's and Mac OS X executables
- (void)setAllowedFileTypes:(NSArray *)types ___ 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: NSOpenPanel listing .app's and Mac OS X executables
On Wed, Apr 22, 2009 at 5:59 PM, Dave Keck davek...@gmail.com wrote: - (void)setAllowedFileTypes:(NSArray *)types Note that on Leopard this method takes an array of UTIs, so you might want to take a look at the list of System-Declared UTIs at http://developer.apple.com/DOCUMENTATION/Carbon/Conceptual/understanding_utis/utilist/UTIlist.html and choose the ones you want to specify. --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: Time since Login?
On 22 Apr 2009, at 18:31, Gwynne Raskind wrote: On Apr 22, 2009, at 12:00 AM, Jeremy W. Sherman wrote: How about just nice(1)-ing the process doing the intense processing to be lower-priority, and letting the scheduler sort it all out? It's my understanding that nice() prioritization is effectively meaningless on Darwin, at least according to several open-source projects who specifically don't bother with nice()-ing when __APPLE__ is defined. Was the scheduler changed to make this untrue in 10.5? Unless I'm very much mistaken, the last time I used it nice() prioritisation seemed to work OK on OS X, so I'm not sure where they're getting their information. Kind regards, Alastair. -- http://alastairs-place.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: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: file extensions and Mime Type
On 22 Apr 2009, at 20:14, Sean McBride wrote: On 4/22/09 11:31 AM, rajesh said: We have listed few mime types which we support and mapped them accordingly for processing. How can one retrieve the Mime type for a particular file? The filesystem does not store a file's mime type nor its UTI as part of the file's metadata. The only filesystem metadata available is the file name extension and HFS type. Those are what Launch Services consults to decide the UTI. In the case of a bundle, IIRC it may also consult Info.plist, and there's nothing stopping Apple from adding additional mechanisms in future. Anyway, UTIs are the right way to go, generally speaking, which was the point. Kind regards, Alastair. -- http://alastairs-place.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: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: Removing or ignoring lineWidth property of an NSBezierPath instance
On 22 Apr 2009, at 22:19, Tobias Zimmerman wrote: First, the documentation for NSBezierPath’s -(CGFloat)lineWidth method states that: If no value was set explicitly for the receiver, this method returns the default line width. This suggests that a newly created NSBezierPath should have no value set for lineWidth. I think it means that it behaves exactly how your code demonstrates that it does. By which I mean that when you create an NSBezierPath, the initial lineWidth is whatever the default was set to at the time of creation. I don't think any other behaviour is very likely, especially given that, as you correctly point out, doing something else would mean either reserving some special value or adding an extra flag to every NSBezierPath. Kind regards, Alastair. -- http://alastairs-place.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: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: objc_exception_throw prior to launching nib file
You shoul post your code as it is difficult to discern your problem with the way you are describing things. In other words: Cannot perform operation without a managed object context What operation is being performed that could require an moc? If I set a breakpoint: In what, on what? the window (from nib) appears then gdb comes up What is strange is that the breakpoint should not be executed What do you mean by this? Breakpoints aren't executed, the debugger stops at that point (hence the term: break, meaning stop, and point, meaning place). You may then choose to execute the line at the breakpoint, or examine it, or whatever. The problem is not being able to debug the portion of code after the window appears. What are you doing that you can't do this? Is there a delegate missing? Are you certain that routine is even being called at all? If a managed object context were needed at that point, it should have said something when I run without code. No? Again, what do you mean, specficially by, when I run without code? ___ 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: -[NSSharedWorkspace openFile:]: Application exits with status 255
Note: I'm re-sending this to the list. Accidently replied only to the sender. --- I have read TN2083. Is there anything in particular that sticks out as bad practice or as the potential cause of my issue? Note that the application in question is not a daemon and will always be launched by a console user, and I've been able to reproduce the issue in 10.4 and 10.5. On Wed, Apr 22, 2009 at 5:57 PM, Kyle Sluder kyle.slu...@gmail.com wrote: You would be very well served to read TN2083, Daemons and Agents: http://developer.apple.com/technotes/tn2005/tn2083.html . You seem to be unaware of some of the pretty important architectural considerations that will affect your implementation. Notably, some things changed in Leopard that will have significant effects on your ability to communicate between applications. --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: Bindings making NSNumberFormatter strange
On Apr 22, 2009, at 3:57 PM, Ulai Beekam wrote: To elaborate, when not using bindings, the default behavior of text fields with a number formatter is that when a user tries to enter abc in it, the text field refuses to lose focus and makes a beeping sounds. However, when the text field's value binding has been set, a sheet is shown, which I think is a bad user experience. That's because no one is handling the error. Bindings gives you some automatic error support. Otherwise you have to handle the error yourself. This is well documented. If you don't like the experience, then change it. In fact it would be even better to just disallow entering of invalid characters in the first place. But such a method would have to work even if the text field's value binding is set. I agree with you that having some sort of built-in support for entry filters would be great (I would add length limiters as well). I think we had this back in the Mac toolbox days, if I am remembering properly. Anyway, there are two different issue to consider. One is validation, and the other is custom editor behavior. They are really two different problems, although there is overlap. My problem is that when I type some invalid stuff in the text field, such as some letters abc, I don't get a beep (which is the normal behaviour and the one I want), but I get some sheet popping up saying Formatting Error. I don't want this sheet. I want the beep like usual. How can I get rid of this sheet behaviour that the bindings is causing? And why is it even causing it? Because that's how formatters work. Getting rid of the sheet is nontrivial if you allow the formatter or bindings to do validation. Also, your formatter (or your model object, using key-value validation) can provide a more sensible error message if you choose. Second question: How can I make my text field just disallow entering of invalid characters in the first place (and producing beep when it is tried)? I want, as you probably guessed, a method that is compatible with bindings. You can use the formatter to check data on the fly, but you have to control the undo manager or you will get exceptions on undo. You can also have a custom field editor, for finer grained control. Both of these have decent documentation. I would be surprised if no-one has a framework that offers some of this behavior. HTH, Keary Suska Esoteritech, Inc. Demystifying technology for your home or business ___ 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
[OT] Re: How to make app login window to look like OS X user login window ?
On 22 Apr 2009, at 17:06, Chris Williams wrote: So you'd rather the user sits there wondering if this huge, highly complex application (like any Office or Adobe app) that takes 10-15 seconds to load, even longer on a slow laptop, is actually starting up, or should I click it again, or is my computer dead, or what the heck is going on here...? If you think Office or any of Adobe's apps really have a good excuse for that behaviour, I'm afraid you're sorely mistaken. The problem they're trying to solve is well-known, and has been solved for *years* in some other bits of software. Since we're talking huge apps, a reasonable comparison might be Emacs, which, if it tried to load everything individually like Adobe's apps appear to, would probably take even longer to load. Yet it appears almost instantaneously. (Yes, I know, I know, that's because of a horrible unexec() hack, at least on most platforms, though IIRC the OS X implementation is a little cleaner than average.) Another large example is OS X itself; it does an Emacs-like trick with device drivers, loading them all in one lump from a cache file whenever possible. I suppose both Adobe and Microsoft would retort that they have a lot of historic baggage and that re-implementing the start-up code isn't high priority for them. Maybe even that there genuinely are things they need to do that really do take time and can't be avoided (though I'm doubtful). I'm only picking on their apps because you mentioned them, and they're easy targets :-) Splash screens serve a purpose other than advertising. No program I know of actually delays the load to show the splash screen. The point is that most of what they do at load time can usually either be avoided entirely, optimized somehow or deferred until it's really necessary. I have an application that connects to a SQL server. The app itself isn't a slow loader, but the connection to the SQL server (often on another computer or on hard drives that may be asleep) can take 5, 10, or more seconds to establish. The splash screen shows that progress and let's the user know what things are being done. Far better than a spinning beach ball. But much better to display the app's main UI and then use the app's usual progress indication mechanism. And then, ideally, to make any parts of the UI that *can* start working work as soon as possible. Of course, we're generalising here, and there is a fine line between having a splash screen and having a window that opens that says that you're just connecting to your server or fetching essential data. Incidentally, since you're talking about a database app, it's worth contemplating whether there is anything that you don't really need to fetch straight away; you *might* find that you don't even need to load any data up front, but just need to do some queries to establish the structure of the data that you're going to have to load. I'm sure you've thought of all of this already wish such a large volume of data, but even if that's true then it might be a useful pointer for someone else reading this e-mail. Anyway, this is getting kind of off-topic, but hopefully it's a useful post anyway. Kind regards, Alastair. -- http://alastairs-place.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: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: -[NSSharedWorkspace openFile:]: Application exits with status 255
I just discovered a new behavior that might be helpful. I'm storing my helper in MacOS (so that it can be located with [NSBundle pathForAuxiliaryExecutable:]). The call to openFile: causes both my application and helper to be executed. My application exits (or so launchd says, even if I put an NSLog in main(), nothing is printed), but my helper runs successfully. This is still a mystery to me. Here's a roundup of situations (best viewed w/ fixed-width font): Expected behavior: My app runs normally. Wrong behavior: Launchd reports that my app exited with status 255, An NSLog before NSApplicationMain() is not called. A Foundation executable in my application's MacOS folder runs (passed argument -psn_0_...) (which should not happen). pre-touch/utime() behavior post-touch/utime() behavior -[NSWorkspace openFile:] from same process (euid 0):Wrong Wrong -[NSWorkspace openFile:] from new process (euid 0): Wrong Expected -[NSWorkspace openFile:] from new process (euid 50x): Expected Expected On Wed, Apr 22, 2009 at 3:04 PM, Sidney San Martín s...@sidneysm.com wrote: I'm running into an issue that's above my skill level and could really use some guidance. My application has an SUID-root update utility (I know that's unusual, but it's an internal application that needs to be able to update itself even when the logged-in user isn't privileged) stored inside the application bundle. It downloads the update, sends a message back to the parent application that it's OK to quit, moves the new copy into place, and launches it. That last bit is giving me issues. I'm using -[NSWorkspace openFile:] to do the actual relaunching. It returns YES, but my application doesn't launch and com.apple.launchd[152] ([0x0-0xb80b8].com.mycompany.MyApplication[3836]) Exited with exit code: 255 appears in the Console. I noticed that at this point, if I use open (on the command line) to try to launch my (updated) application, it works. However, if I sudo open, it prints LSOpenFromURLSpec() failed with error -10810 for the file -10810 translates to Unexpected internal error. If I touch the application bundle, open starts working as me and as root. Following this thread, I tried calling utimes() from my helper before openFile:, but run into the same condition. I've also tried LSRegisterURL() with no change. Can anyone give me a hint as to what's happening here? I'm lost. ___ 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 to: many users edit same file at the same time ?
Hello everyone ! Again me with another bizarre question So I am interested how to implement a possibility that many users can edit same file (text, XML, sheet, database entry) at the same time ? Forget the networking part for now and focus on the part of what to use for file: txt file, xml file, database ? Witch one is more appropriate ? How does that file gets saved when many people edit it at the same time ? How to implement restrictions for some users (privileges) ? To explain what I'm trying to figure out, is how collaborative editor like SubEthaEdit works (with files, file-locking, accessing, saving, etc) Thanks to all in advance. Mario ___ 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
Quick question about adding an NSPanel
Hi,
I have a quick question about adding an NSPanel to an app. I'm
following Hillegass's book, so I have a separate controller and nib
for the panel. I added an IBAction (showSettingsPanel:) to my main app
controller and hooked it up to the Preferences... menu item. Works
great.
This isn't actually a preference panel, though, and I want the panel
to open when the app launches so I added the line:
[ self showSettingsPanel: self ];
to the end of the awakeFromNib method of my main controller. Also
works great, with one tiny exception. In both cases the panel has
focus (either when opened from the Preferences... menu or at app
launch). When the panel is opened from awakeFromNib, however, the main
window has a light title bar, as if it's not frontmost. That's not the
case when the panel is launched from the Preferences... menu. So my
questions:
(1) Why does it make a difference how showSettingsPanel: is called?
(2) Is there a better way to do what I want to do?
Code for showSettingsPanel: below (it's very simple, basically
straight from Hillegass).
Thanks.
Chris
- (IBAction) showSettingsPanel: (id) sender {
NSLog(@In showSettingsPanel.);
if (!settingsController) {
settingsController = [ [ SettingsController alloc ] init ];
}
[ settingsController showWindow: self ];
}
___
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RE: Bindings making NSNumberFormatter strange
So I really must make a custom field editor to accomplish on-the-fly validation (i.e. disallowing on-the-fly invalid characters)? I suppose I could do a custom field editor and override keyDown:, checking for characters in [NSCharacterSet decimalDigitCharacterSet], etc. In fact, having made some custom field editors in the past I know I would be able to do this. However, I consider this to be a somewhat lame hack :( I therefore want to make sure with you guys that there is no easier solution to this, e.g. to somehow use the number formatter as a basis for automatic on-the-fly validation. The whole thing just seems strange to me. Because when the text field is not bound, on-the-fly validation seems to work just fine! But this great feature goes away as soon as the text field is bound. That is, as soon as the text field is bound, the validation stops being on-the-fly and goes elsewhere instead. Is there no way having the validation ALSO as an on-the-fly thing? H. I'm hoping for some more elaboration on this to gain a bit more understanding. But so far, thanks very much for your reply Keary. Much appreciated! CC: cocoa-dev@lists.apple.com From: cocoa-...@esoteritech.com To: ulaibee...@hotmail.com Subject: Re: Bindings making NSNumberFormatter strange Date: Wed, 22 Apr 2009 16:46:12 -0600 On Apr 22, 2009, at 3:57 PM, Ulai Beekam wrote: To elaborate, when not using bindings, the default behavior of text fields with a number formatter is that when a user tries to enter abc in it, the text field refuses to lose focus and makes a beeping sounds. However, when the text field's value binding has been set, a sheet is shown, which I think is a bad user experience. That's because no one is handling the error. Bindings gives you some automatic error support. Otherwise you have to handle the error yourself. This is well documented. If you don't like the experience, then change it. In fact it would be even better to just disallow entering of invalid characters in the first place. But such a method would have to work even if the text field's value binding is set. I agree with you that having some sort of built-in support for entry filters would be great (I would add length limiters as well). I think we had this back in the Mac toolbox days, if I am remembering properly. Anyway, there are two different issue to consider. One is validation, and the other is custom editor behavior. They are really two different problems, although there is overlap. My problem is that when I type some invalid stuff in the text field, such as some letters abc, I don't get a beep (which is the normal behaviour and the one I want), but I get some sheet popping up saying Formatting Error. I don't want this sheet. I want the beep like usual. How can I get rid of this sheet behaviour that the bindings is causing? And why is it even causing it? Because that's how formatters work. Getting rid of the sheet is nontrivial if you allow the formatter or bindings to do validation. Also, your formatter (or your model object, using key-value validation) can provide a more sensible error message if you choose. Second question: How can I make my text field just disallow entering of invalid characters in the first place (and producing beep when it is tried)? I want, as you probably guessed, a method that is compatible with bindings. You can use the formatter to check data on the fly, but you have to control the undo manager or you will get exceptions on undo. You can also have a custom field editor, for finer grained control. Both of these have decent documentation. I would be surprised if no-one has a framework that offers some of this behavior. HTH, Keary Suska Esoteritech, Inc. Demystifying technology for your home or business _ Invite your mail contacts to join your friends list with Windows Live Spaces. It's easy! http://spaces.live.com/spacesapi.aspx?wx_action=createwx_url=/friends.aspxmkt=en-us___ 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: Removing or ignoring lineWidth property of an NSBezierPath instance
On 23/04/2009, at 7:19 AM, Tobias Zimmerman wrote: (By way of further explanation, the project this arises in involves a set of bezier paths that are generated in one program and archived for use in a separate program. I would like the lineWidth and other drawing specifics such as line/fill colors to be controlled by the view where the reusable paths are drawn, rather than a property of the paths themselves). I don't think that's going to work. My take on what +setDefaultLineWidth: means is that this establishes the value for a path's -lineWidth when it is first created. From that instant on, the path itself has a defined line width, a copy of the default value. If you never set the default I believe it defaults to 1.0. When you dearchive the paths the line width of each will be whatever is recorded for them, which came from the default on the source machine at the time they were created. Changing the default line width on your machine will have no effect on these values. If you want to change the line width when the paths are drawn, you'll have to set each one individually prior to drawing. --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
