tableview, button with view and bindings
Can anyone give me some guidance on adding a button w/ image to a tableview using bindings. I've had good luck adding buttons to a tableview by dropping in a button cell. But adding the image is giving me some problems. The image will be retrieved from the object represented on the row of the tableview. I'm populating the content array and tableview via an arrayController. thanks ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
How to get the applicaiton name that loads bundle
Dear All, Now I'm developing the printer driver, and I want to realize the following specificaiton: 1, If the current applicaiton loading my PDE is TextEdit or Preview, do actionA 2, If the current application loading my PDE is another application, do actionB. But I don't know how to get the information of the application loading my PDE. I checked the document about NSBundle and PDEPluginCallback, but can't find any API about it. Is there anyone who knows this? Best Regards Jeff Chen ___ 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: tableview, button with view and bindings
Clarification: a button with an image in a tableview. On Jul 1, 12:13 am, R r4eem...@gmail.com wrote: Can anyone give me some guidance on adding a button w/ image to a tableview using bindings. I've had good luck adding buttons to a tableview by dropping in a button cell. But adding the image is giving me some problems. The image will be retrieved from the object represented on the row of the tableview. I'm populating the content array and tableview via an arrayController. thanks ___ Cocoa-dev mailing list (cocoa-...@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/cocoa-dev-garchive-9... This email sent to cocoa-dev-garchive-98...@googlegroups.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: tableview, button with view and bindings
On Jun 30, 2011, at 23:13, R wrote: Can anyone give me some guidance on adding a button w/ image to a tableview using bindings. I've had good luck adding buttons to a tableview by dropping in a button cell. But adding the image is giving me some problems. The image will be retrieved from the object represented on the row of the tableview. I'm populating the content array and tableview via an arrayController. In IB, drill down to the level of the button cell -- either keep clicking on the top row of the column in the layout view until just the cell is selected, or select the cell directly in the outline view. Once the cell is selected, you should see the Image and Alternate Image bindings in the Bindings inspector. Bind the one(s) that you want to a NSImage property of arrangedObjects, and that should be all you need to do. Alternately, you can do this programmatically by implementing the tableView:willDisplayCell:forTableColumn:row: delegate method. After matching on the row, column and (for robustness) cell class, just set the cell's image to the desired image. I guess this doesn't meet your using bindings requirement, but sometimes it's easier to do it this way than to derive a KVO-compliant image property to use with bindings. ___ 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 applicaiton name that loads bundle
On Jul 1, 2011, at 12:25 AM, Chen, Jeff (SDCC) wrote: Is there anyone who knows this? Haven't done it from a PDE specifically, but in general [NSBundle mainBundle] will give you the bundle of the executing application, and you can go from there. -- Scott Ribe scott_r...@elevated-dev.com http://www.elevated-dev.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: How to get the applicaiton name that loads bundle
Dear Scott, Thank you so much! mainBundle() works well. Best Regards Jeff Chen -Original Message- From: Scott Ribe [mailto:scott_r...@elevated-dev.com] Sent: Friday, July 01, 2011 2:46 PM To: Chen, Jeff (SDCC) Cc: 'cocoa-dev@lists.apple.com' Subject: Re: How to get the applicaiton name that loads bundle On Jul 1, 2011, at 12:25 AM, Chen, Jeff (SDCC) wrote: Is there anyone who knows this? Haven't done it from a PDE specifically, but in general [NSBundle mainBundle] will give you the bundle of the executing application, and you can go from there. -- Scott Ribe scott_r...@elevated-dev.com http://www.elevated-dev.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
How to cancel an asynchronous GCD block?
Hi,
I am migrating my code to use GCD blocks instead of NSOperations.
NSOperation has a -cancel method to thread-safely notify the
NSOperation thread that it needs to be canceled.
How do you do this for an async GCD block?
I.e. suppose I have the following code:
@implementation MyClass
- (void)myMethod
{
dispatch_async(
dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0),
^{
do_some_lengthy_cancelable_operation();
});
}
@end
I need to be able to cancel do_some_lengthy_cancelable_operation() at
some point.
The first solution that comes to my mind is the following.
@interface MyClass MyCancellableOperation
{
bool m_isCancelled
}
- (bool)isCancelled;
@end
@implementation MyClass
- (void)myMethod
{
dispatch_async(
dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0),
^{
do_some_lengthy_cancelable_operation(self);
});
}
@end
void do_some_lengthy_cancelable_operation (idMyCancellableOperation operation)
{
for (int i = 0; i BIG_NUMBER; ++i)
{
if ([operation isCancelled])
{
break;
}
}
}
But this seems a bit clunky (compared to the elegance of GCD code),
and also I'm not sure if it will be thread-safe to set m_isCancelled
from the main thread, while the async block may be racing to query it
(though it should be fine, setting a boolean variable should be
atomic).
Is there a better solution?
Thanks,
Oleg.
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Re: How to cancel an asynchronous GCD block?
On Jul 1, 2011, at 2:54 AM, Oleg Krupnov wrote: But this seems a bit clunky (compared to the elegance of GCD code), and also I'm not sure if it will be thread-safe to set m_isCancelled from the main thread, while the async block may be racing to query it (though it should be fine, setting a boolean variable should be atomic). Is there a better solution? You can declare the boolean as an atomic property and synthesize it. Then, it will be sure to be atomic, no matter what. Charles___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: How to cancel an asynchronous GCD block?
On Jul 1, 2011, at 2:54 AM, Oleg Krupnov wrote: I am migrating my code to use GCD blocks instead of NSOperations. Why? But this seems a bit clunky (compared to the elegance of GCD code), It's pretty much your only option. GCD doesn't have a notion of canceling a task, so you can only set a flag and check it. and also I'm not sure if it will be thread-safe to set m_isCancelled from the main thread, while the async block may be racing to query it (though it should be fine, setting a boolean variable should be atomic). Setting a boolean will be atomic on any likely architecture. However, the technique is safe even if setting the boolean were not atomic. The only transition is from false to true. You're sure it starts out as false. If at any point it evaluates to true, then you know somebody has set it or is in the process of setting it, which means it really is supposed to be true. In theory, yes, the code which is setting it may not have completed, but you don't care. Atomicity is about avoiding an incomplete or internally-inconsistent result, but that's not possible with a boolean that just transitions once. (It's important that it only transitions once.) 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: How to cancel an asynchronous GCD block?
I am migrating my code to use GCD blocks instead of NSOperations. Why? I should have said, I'm writing a new app and I am migrating my knowledge of implementing multi-threading from NSOperation to GCD :) (And I should say, I'm beginning to like the easiness of GCD, even though I was initially reluctant to use blocks, because they seem harder to read, less encapsulated and easier to make scope mistakes.) But this seems a bit clunky (compared to the elegance of GCD code), It's pretty much your only option. GCD doesn't have a notion of canceling a task, so you can only set a flag and check it. Thanks, now I know. If at any point it evaluates to true, then you know somebody has set it or is in the process of setting it, which means it really is supposed to be true. In theory, yes, the code which is setting it may not have completed, but you don't care. I undersand that, but I just wanted to be a purist :) Well, I will do as Charles suggested: I will declare the property as atomic and synthesize it. Thanks to everyone! ___ 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
CIImage directly to CALayer contents?
Hi, I'm a little shaky in this area, so I beg your pardon. CALayer has a contents property which is a CGImageRef, i.e. a Core Graphic image. CGImages are stored in RAM. CALayer is built on top of OpenGL and uses VRAM to store its bitmap image internally (a texture). Now suppose that I have a CIImage constructed with +imageWithContentsOfURL. The image is loaded (lazily) directly to VRAM. So, If I go the suggested route, and first create a CGImage from CIImage, then assign it to CALayer's contents, I will effectively copy the image from VRAM to RAM and then again back to VRAM, which is slow, memory consuming, and generally unnecessary. Am I correct? If so, is there a way to pass a CIImage directly to CALayer without going beyond VRAM? Thanks! Oleg. ___ 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
Windows cryptography
Hello. I have an iPhone app (SDK 4.3) that uses symmetric key encryption (AES 256, through the CommonCrypto library). I have the parameters set to use pkcs7 padding, and an iv of all zeros (CBC mode). My question (somewhat off the lists's topic, I'm afraid) is that I need to help our IT people get a file encrypted in this format on a Windows system. I was wondering if anyone has accomplished this task. I strongly prefer that they use open-source code (or something from a major developer, but it'll have to be free, then) if possible, for obvious security reasons, but they don't seem to be able to compile stuff, so I'm hoping to find an open source project that comes with a precompiled binary. Any thoughts? Thanks for any help you might provide! -Dan___ 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: Windows cryptography
I would have a look at what's available through Cygwin. With any luck something like OpenSSL is available and has the features you're looking for. Jeff Kelley On Friday, July 1, 2011, Daniel Wambold wambo...@gmail.com wrote: Hello. I have an iPhone app (SDK 4.3) that uses symmetric key encryption (AES 256, through the CommonCrypto library). I have the parameters set to use pkcs7 padding, and an iv of all zeros (CBC mode). My question (somewhat off the lists's topic, I'm afraid) is that I need to help our IT people get a file encrypted in this format on a Windows system. I was wondering if anyone has accomplished this task. I strongly prefer that they use open-source code (or something from a major developer, but it'll have to be free, then) if possible, for obvious security reasons, but they don't seem to be able to compile stuff, so I'm hoping to find an open source project that comes with a precompiled binary. Any thoughts? Thanks for any help you might provide! -Dan___ -- Jeff Kelley ___ 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: [Q] Will the be any problem in implementing an NSArray method using fast enumeration?
Dave DeLong wrote: You can just do: NSArray *objectsArray = [theArray valueForKey:key]; And it'll do pretty much the same thing (except that it'll call -valueForKey: on each item in the array, and not objectForKey:. However, if the objects are NSDictionaries, that's pretty much the same thing). Pretty much. But just this week I ran across a situation where sending objectForKey: worked while valueForKey: said the dictionary wasn't KVC-compliant for the specified key. ___ 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: [Q] Will the be any problem in implementing an NSArray method using fast enumeration?
On 1 Jul 2011, at 12:59, Gregory Weston wrote: Dave DeLong wrote: You can just do: NSArray *objectsArray = [theArray valueForKey:key]; And it'll do pretty much the same thing (except that it'll call -valueForKey: on each item in the array, and not objectForKey:. However, if the objects are NSDictionaries, that's pretty much the same thing). Pretty much. But just this week I ran across a situation where sending objectForKey: worked while valueForKey: said the dictionary wasn't KVC-compliant for the specified key. I believe this would be when the key begins with an @ symbol. ___ 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: [Q] Will the be any problem in implementing an NSArray method using fast enumeration?
On 30 Jun 2011, at 22:41, Quincey Morris wrote: On Jun 30, 2011, at 13:51, JongAm Park wrote: The rationale behind enumerator pattern is to unify the way to access collection classes no matter what they actually look like. So, enumerator pattern is actually written in index based iteration wrapped with enumerator pattern. Similarly, I guessed fast enumeration was based on either index iteration or enumerator pattern. No, not necessarily, if by index iteration you mean 'objectAtIndex:'. NSArray has 2 primitive methods (count and objectAtIndex:) that a concrete subclass must implement. It also conforms to NSFastEnumeration, so a concrete subclass must also implement 'countByEnumeratingWithState:objects:count:'. That's three primitive methods you know for sure are implemented in any concrete subclass. No, the first two are the primitive methods, and that's it. They are all you need to implement. You may choose to implement other methods for performance, but they are not essential. NSArray itself implements first enumeration by calling through to the primitive methods automatically for you. (So yes, that's not actually any faster than calling -objectAtIndex: yourself repeatedly; it's more the convenience that buys you). NSArray's concrete subclasses that you generally work with — NSCFArray etc. — then re-implement fast enumeration to be truly fast and avoid the -objectAtIndex: bottleneck. There's no way of knowing (in general) whether these primitive implementations make use of each other. I'm virtually certain, for example, that in NSCFArray (the standard but private concrete subclass of NSArray), countByEnumeratingWithState:objects:count: doesn't use objectAtIndex:, because part of the point of fast enumeration is to eliminate per-object method calls if possible. I'm also virtually certain that NSCFArray's enumerator uses the fast enumeration method countByEnumeratingWithState:objects:count: directly, rather than using objectAtIndex:. The method you wrote is non-primitive. However, you know that all of the primitive methods and protocols are implemented, so it's safe to use those directly (as others already replied). It's also safe to use all of the standard non-primitive methods, because the abstract NSArray class provides default implementations of all of them, regardless of whether a subclass overrides them for performance reasons. Also, fast enumeration is a language feature. So, if Objective-C without fast enumerator is used, methods written with fast enumerator would not work. If an older Objective-C runtime is used, you'll get an invalid selector exception for 'countByEnumeratingWithState:objects:count:', so yes it would not work in that 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: Quicklook thumbnails vs previews, API for previews?
Have a look at QLPreviewPanel. On 30 Jun 2011, at 07:04, Oleg Krupnov wrote: Hi, The QuickLook API documentation defines and contrasts thumbnails and previews, but all I see on the client side is the only function QLThumbnailImageCreate. I assume this is for creating thumbnails, isn't it? In that case, how do I create previews on the client side? Alternatively, if this function is meant for creating both thumbnails and previews, is there a way to force create thumbnail or preview? Thanks. Oleg. ___ 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/cocoadev%40mikeabdullah.net This email sent to cocoa...@mikeabdullah.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
Placing NSComparator into Dictionary
Is there any way to put the NSComparator pointers into Dictionary? I have tried put NSValue using [NSValue valueWithPointer:] , but giving me nil in get operation. Apparao Mulpuri This email is sent for and on behalf of Ivy Comptech Private Limited. Ivy Comptech Private Limited is a limited liability company. This email and any attachments are confidential, and may be legally privileged and protected by copyright. If you are not the intended recipient dissemination or copying of this email is prohibited. If you have received this in error, please notify the sender by replying by email and then delete the email completely from your system. Any views or opinions are solely those of the sender. This communication is not intended to form a binding contract on behalf of Ivy Comptech Private Limited unless expressly indicated to the contrary and properly authorised. Any actions taken on the basis of this email are at the recipient's own risk. Registered office: Ivy Comptech Private Limited, Cyber Spazio, Road No. 2, Banjara Hills, Hyderabad 500 033, Andhra Pradesh, India. Registered number: 37994. Registered in India. A list of members' names is available for inspection at the registered office. ___ 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: tableview, button with view and bindings
Thanks. I'm currently displaying an image with success. I want to use a button and an image instead. I did what you said and am covered up with errors. Will dig deeper. Much thanks On Jul 1, 12:44 am, Quincey Morris quinceymor...@earthlink.net wrote: On Jun 30, 2011, at 23:13, R wrote: Can anyone give me some guidance on adding a button w/ image to a tableview using bindings. I've had good luck adding buttons to a tableview by dropping in a button cell. But adding the image is giving me some problems. The image will be retrieved from the object represented on the row of the tableview. I'm populating the content array and tableview via an arrayController. In IB, drill down to the level of the button cell -- either keep clicking on the top row of the column in the layout view until just the cell is selected, or select the cell directly in the outline view. Once the cell is selected, you should see the Image and Alternate Image bindings in the Bindings inspector. Bind the one(s) that you want to a NSImage property of arrangedObjects, and that should be all you need to do. Alternately, you can do this programmatically by implementing the tableView:willDisplayCell:forTableColumn:row: delegate method. After matching on the row, column and (for robustness) cell class, just set the cell's image to the desired image. I guess this doesn't meet your using bindings requirement, but sometimes it's easier to do it this way than to derive a KVO-compliant image property to use with bindings. ___ Cocoa-dev mailing list (cocoa-...@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/cocoa-dev-garchive-9... This email sent to cocoa-dev-garchive-98...@googlegroups.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: Windows cryptography
OpenSSL is available for Windows, but I can't see how to feed it an encryption key, just a passphrase which is (apparently) converted to a key. However, since CommonCrypto's CCCrypt uses the key directly, that's what I've got. I'll check Cygwin out. Thanks. (Anyone know how to feed OpenSSL a key rather than a passphrase, or at least how to take a passphrase and generate the key?) -Dan___ 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: tableview, button with view and bindings
throwing exceptions when the binding controller key is arrangeObjects. Note that all other data is using arrangedObjects fine. But, placing an image on the button with this config is failing. I can get an image to display using the selection controller key. But of course the wrong image will display when changing rows. On Jul 1, 12:44 am, Quincey Morris quinceymor...@earthlink.net wrote: On Jun 30, 2011, at 23:13, R wrote: Can anyone give me some guidance on adding a button w/ image to a tableview using bindings. I've had good luck adding buttons to a tableview by dropping in a button cell. But adding the image is giving me some problems. The image will be retrieved from the object represented on the row of the tableview. I'm populating the content array and tableview via an arrayController. In IB, drill down to the level of the button cell -- either keep clicking on the top row of the column in the layout view until just the cell is selected, or select the cell directly in the outline view. Once the cell is selected, you should see the Image and Alternate Image bindings in the Bindings inspector. Bind the one(s) that you want to a NSImage property of arrangedObjects, and that should be all you need to do. Alternately, you can do this programmatically by implementing the tableView:willDisplayCell:forTableColumn:row: delegate method. After matching on the row, column and (for robustness) cell class, just set the cell's image to the desired image. I guess this doesn't meet your using bindings requirement, but sometimes it's easier to do it this way than to derive a KVO-compliant image property to use with bindings. ___ Cocoa-dev mailing list (cocoa-...@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/cocoa-dev-garchive-9... This email sent to cocoa-dev-garchive-98...@googlegroups.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 Do I get informed when -showHelp: has been called?
On Wed, 29 Jun 2011 16:06:36 +0100, Angus Hardie angus.har...@malcolmhardie.com said: On 29 Jun 2011, at 14:22, Ulf Dunkel wrote: Am 27.06.2011 22:58, schrieb Ulf Dunkel: In a simple app of mine, I use the standard Help menu and MyApp Help menu item, which is bound to -showHelp:. I would like to have my AppDelegate being informed when the Help Viewer has been launched and opened from this menu item. It seems as if the method -showHelp: cannot be overridden. Which other way can I use to receive any information when -showHelp: has been called? My first thought was that you could change the target of the menu item so that it calls your own method, then call the original showHelp method with something like: [NSApp showHelp:sender] I routinely repoint the showHelp: action from the Help menu item so that my own code runs in response. Usually, however, this is because I *don't* want the Help View launched and opened from this menu item. :) m. -- matt neuburg, phd = m...@tidbits.com, http://www.apeth.net/matt/ A fool + a tool + an autorelease pool = cool! Programming iOS 4! http://www.apeth.net/matt/default.html#iosbook___ 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: Windows cryptography
On Fri, Jul 1, 2011 at 7:30 AM, Daniel Wambold wambo...@gmail.com wrote: Hello. I have an iPhone app (SDK 4.3) that uses symmetric key encryption (AES 256, through the CommonCrypto library). I have the parameters set to use pkcs7 padding, and an iv of all zeros (CBC mode). My question (somewhat off the lists's topic, I'm afraid) is that I need to help our IT people get a file encrypted in this format on a Windows system. I was wondering if anyone has accomplished this task. I strongly prefer that they use open-source code (or something from a major developer, but it'll have to be free, then) if possible, for obvious security reasons, but they don't seem to be able to compile stuff, so I'm hoping to find an open source project that comes with a precompiled binary. Any thoughts? Thanks for any help you might provide! Either OpenSSL or Crypto++ should be fine for the job. For OpenSSL,, use the EVP_* functions. For Crypto++, use an CBC_ModeAES as documented at http://www.cryptopp.com/wiki/CBC_Mode (use FileSource and FileSink rather than a StringSource and StringSink). Crypto++ also has iOS porting notes at http://www.cryptopp.com/wiki/IOS. Also see Peter Guttman's cryptlib and Botan (open source, but I don't use them). You can also use Windows' built in gear (CAPI) - use it raw, or use a wrapper (such as http://www.codeproject.com/KB/security/WinAES.aspx). Jeff ___ 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: CIImage directly to CALayer contents?
On Jul 1, 2011, at 3:16 AM, Oleg Krupnov wrote: Now suppose that I have a CIImage constructed with +imageWithContentsOfURL. The image is loaded (lazily) directly to VRAM. Not quite. There is still a trip through RAM that is necessary to get to VRAM (basically it is nearly impossible to go directly to VRAM, primarily because the CPU can't see it directly). If so, is there a way to pass a CIImage directly to CALayer without going beyond VRAM? I'm fairly certain that CALayer doesn't support a CIImage as its contents, but you can assign a CGImageRef to it, and then assign all of the filters you used to generate that CIImage to the layer. In the case you outline however, there is no advantage to be had – just assign the CGImageRef to the CALayer's contents and you are likely to be as optimal as possible. -- David Duncan ___ 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: tableview, button with view and bindings
On Jul 1, 2011, at 07:33, R wrote: throwing exceptions when the binding controller key is arrangeObjects. Note that all other data is using arrangedObjects fine. But, placing an image on the button with this config is failing. I can get an image to display using the selection controller key. But of course the wrong image will display when changing rows. Yes, sorry, I misled you. I looked at a similar thing in one of my own NIB files, but didn't notice that it wasn't similar enough. You can bind from a cell's bindings in a table view, but you can't (AFAIK) bind in a row-dependent manner. This transparent binding through rows is a feature only of table columns, and isn't available from the cells. You'll need to use the tableView:willDisplayCell:forTableColumn:row: delegate method. Retrieve the object value for the row, then get the object's image and set the cell's image property to the image. ___ 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: Instance Variables of NSManagedObject Subclasses
On 2011 Jun 30, at 15:36, Allen Ingling wrote: Am I not supposed to add instance variables to NSManagedObject sublcasses? There is no problem in adding instance variables to NSManagedObject subclasses. I have done so many times. ___ 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: Placing NSComparator into Dictionary
On Jul 1, 2011, at 5:50 AM, Appa Rao Mulpuri wrote: Is there any way to put the NSComparator pointers into Dictionary? I have tried put NSValue using [NSValue valueWithPointer:] , but giving me nil in get operation. An NSComparator is a type of block, and blocks can be directly used as Objective-C objects. The only thing is that you have to copy the block first, if you’re going to use it after the containing function exits. So: NSComparator cCopy = [comparator copy]; [myDict setObject: cCopy forKey: @“comparator”]; [cCopy release]; —Jens___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
How to tell if NSServices launched my app
Is there any way to know (at app startup) if my app's launch was initiated because a user invoked one of my NSServices items? Any insight into this would be much appreciated. -- Mark Munz unmarked software http://www.unmarked.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: Windows cryptography
Hello. After further pain, I found the solution: openSSL allows -K (for the key in hex) and -iv (for the initialization vector in hex). (BOTH must be supplied if -K is used.) Consider this thread closed. Thanks to those who assisted. -Dan___ 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
From a view rect to a screen rect
I am sure I am missing something simple but I've tried everything I can find I need to convert a rectangle in a NSView to a corresponding rectangle in screen coordinates. originally I was using this code: selected.origin.x = selection.origin.x / ([imageView frame].size.width/screen.size.width); selected.origin.y = selection.origin.y / ([imageView frame].size.height/screen.size.height)+25; selected.size.height = selection.size.height / ([imageView frame].size.height/screen.size.height); selected.size.width = selection.size.width / ([imageView frame].size.width/screen.size.width); and it worked. However I have had to change the means by which I was capturing the screen to CGDisplayCreateImageForRect I want to select an area in a view that represents the entire screen. I need that rectangle then to be translated to the correct size and origin in screen coordinates. The above code creates a rectangle of the correct size but the origin is so far off I cannot image how to fix it. I have tried having the view itself use convertRectToBase passing the screen bounds. This creates a rectangle of the correct size but the origin is always, no matter what, 15,183. I'm totally lost here and don't even know what to search for now that my other attempts have failed. Could some one help me out? I'm hoping to find something with low overhead as clicks are a factor.___ 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: From a view rect to a screen rect
UIView has some convenience methods you can use to convert a CGRect to and from different views’ coordinate systems. Look at the documentation for -convertRect:fromView:http://developer.apple.com/library/ios/documentation/uikit/reference/UIView_Class/UIView/UIView.html#//apple_ref/doc/uid/TP40006816-CH3-BBCDBGGGfor an example. Now, UIScreen isn’t a view, but you can probably combine its -applicationFrameinstance method with the UIWindow (which *is* a view) to get something approximating the screen’s frame relative to your view’s coordinate system (which is what I think you’re asking for). Jeff Kelley On Fri, Jul 1, 2011 at 2:43 PM, Development developm...@fornextsoft.comwrote: I am sure I am missing something simple but I've tried everything I can find I need to convert a rectangle in a NSView to a corresponding rectangle in screen coordinates. originally I was using this code: selected.origin.x = selection.origin.x / ([imageView frame].size.width/screen.size.width); selected.origin.y = selection.origin.y / ([imageView frame].size.height/screen.size.height)+25; selected.size.height = selection.size.height / ([imageView frame].size.height/screen.size.height); selected.size.width = selection.size.width / ([imageView frame].size.width/screen.size.width); and it worked. However I have had to change the means by which I was capturing the screen to CGDisplayCreateImageForRect I want to select an area in a view that represents the entire screen. I need that rectangle then to be translated to the correct size and origin in screen coordinates. The above code creates a rectangle of the correct size but the origin is so far off I cannot image how to fix it. I have tried having the view itself use convertRectToBase passing the screen bounds. This creates a rectangle of the correct size but the origin is always, no matter what, 15,183. I'm totally lost here and don't even know what to search for now that my other attempts have failed. Could some one help me out? I'm hoping to find something with low overhead as clicks are a factor. ___ 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: From a view rect to a screen rect
On Jul 1, 2011, at 2:43 PM, Development wrote: I have tried having the view itself use convertRectToBase passing the screen bounds. That method doesn't do what you think it does. The docs say pretty clearly you should pass it a rect in the receiver’s coordinate system. This is a method of NSView, so the receiver is the view, and question is what is the rect being converted to? I *partly* blame the docs and/or the method name, because it isn't clear what base means in the method name. This has always bugged me. As far as I can tell it means the window's coordinate system, so I don't know why they didn't name the method convertRectToWindow:. Anyway, check out NSView's window method, and NSWindow's convertBaseToScreen: method. See the docs for what these methods return. --Andy This creates a rectangle of the correct size but the origin is always, no matter what, 15,183. I'm totally lost here and don't even know what to search for now that my other attempts have failed. Could some one help me out? I'm hoping to find something with low overhead as clicks are a factor.___ 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/aglee%40mac.com This email sent to ag...@mac.com ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Getting Image from plist
Hi, I'm reading data from an plist, and I'm having problems for get the image. The code for text look like this: cell.auhorLabel.text = [[data objectAtIndex:index] objectForKey:@author]; Works fine. The code to get a image em put in uiimageview look like this: cell.coverAuthor.image = [UIImage imageWithContentsOfFile:[data objectAtIndex:index] objectForKey:@cover]; yeah, I know, this last line is strange. How is the right way? Thanks! -- *Fernando Aureliano* ___ 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: From a view rect to a screen rect
On Jul 1, 2011, at 1:14 PM, Andy Lee wrote: On Jul 1, 2011, at 2:43 PM, Development wrote: I have tried having the view itself use convertRectToBase passing the screen bounds. That method doesn't do what you think it does. The docs say pretty clearly you should pass it a rect in the receiver’s coordinate system. This is a method of NSView, so the receiver is the view, and question is what is the rect being converted to? I *partly* blame the docs and/or the method name, because it isn't clear what base means in the method name. This has always bugged me. As far as I can tell it means the window's coordinate system, so I don't know why they didn't name the method convertRectToWindow:. http://groups.google.com/a/chromium.org/group/chromium-dev/browse_thread/thread/6b989dcbb79e9ba/029eeb633c5287cc Quote: If you want to convert to/from the window's base coordinate system, use the original -convert[xx]:[to|from]View: and pass in a nil view. What those base calls do is a conversion to the base coordinate system which isn't the window base coordinate system. This will not get you the coordinates you want. Don't use them. (The base coordinate system has to do with resolution independence; go look it up.) Anyway, check out NSView's window method, and NSWindow's convertBaseToScreen: method. See the docs for what these methods return. --Andy This creates a rectangle of the correct size but the origin is always, no matter what, 15,183. I'm totally lost here and don't even know what to search for now that my other attempts have failed. Could some one help me out? I'm hoping to find something with low overhead as clicks are a factor.___ 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/aglee%40mac.com This email sent to ag...@mac.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/lrucker%40vmware.com This email sent to lruc...@vmware.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: tableview, button with view and bindings
Quincey, Thanks! All now working as planned. I had to learn about tableview column identifiers to make sure I was adding the image to the correct column. Thanks again for taking the time to respond. Hopefully I'll soon be able to help more than beHelped! Have a great weekend -- Ron On Jul 1, 11:07 am, Quincey Morris quinceymor...@earthlink.net wrote: On Jul 1, 2011, at 07:33, R wrote: throwing exceptions when the binding controller key is arrangeObjects. Note that all other data is using arrangedObjects fine. But, placing an image on the button with this config is failing. I can get an image to display using the selection controller key. But of course the wrong image will display when changing rows. Yes, sorry, I misled you. I looked at a similar thing in one of my own NIB files, but didn't notice that it wasn't similar enough. You can bind from a cell's bindings in a table view, but you can't (AFAIK) bind in a row-dependent manner. This transparent binding through rows is a feature only of table columns, and isn't available from the cells. You'll need to use the tableView:willDisplayCell:forTableColumn:row: delegate method. Retrieve the object value for the row, then get the object's image and set the cell's image property to the image. ___ Cocoa-dev mailing list (cocoa-...@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/cocoa-dev-garchive-9... This email sent to cocoa-dev-garchive-98...@googlegroups.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: Getting Image from plist
On Jul 1, 2011, at 1:55 PM, Fernando Aureliano wrote: cell.coverAuthor.image = [UIImage imageWithContentsOfFile:[data objectAtIndex:index] objectForKey:@cover]; That’s not going to compile. You probably want the RHS to be: [UIImage imageWithContentsOfFile:[[data objectAtIndex:index] objectForKey:@“cover”]] That should work, assuming that the value of the “cover” property is a valid file path. —Jens___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: Getting Image from plist
Hi, What is stored in the cover object? If it's the name of a file that is bundled with the app, you can use cell.coverAuthor.image = [UIImage imageNamed:[[data objectAtIndex:index] objectForKey:@cover]]; If it's the name of a file stored on disk some place (e.g., the Application Support directory) you'll need to build up a string with the complete path for it using something like NSSearchPathForDirectoriesInDomains(NSApplicationSupportDirectory, NSUserDomainMask, YES). Then pass that full path to [UIImage imageWithContentsOfFile:]. If it's an NSData object containing the actual image, you could use [UIImage imageWithData:[[data objectAtIndex:index] objectForKey:@cover]]; wp On Jul 1, 2011, at 1:55 PM, Fernando Aureliano wrote: Hi, I'm reading data from an plist, and I'm having problems for get the image. The code for text look like this: cell.auhorLabel.text = [[data objectAtIndex:index] objectForKey:@author]; Works fine. The code to get a image em put in uiimageview look like this: cell.coverAuthor.image = [UIImage imageWithContentsOfFile:[data objectAtIndex:index] objectForKey:@cover]; yeah, I know, this last line is strange. How is the right way? Thanks! -- *Fernando Aureliano* ___ 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/wpackard%40mac.com This email sent to wpack...@mac.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: From a view rect to a screen rect
These don't seem to work. The origin is still way way way off NSRect n1=[imageView convertRect:selection toView:nil]; NSPoint p1 = [window convertBaseToScreen:n1.origin]; Does any one know how to take a selected area within a view and translate it so that it resizes itself and then adjusts it's origin. Maybe I didn't explain well enough. I have a 800X600 rectangle which contains an image capture of the full screen. Within the 800X600 rectangle you can select a smaller area. This smaller selection should then become the area of the actual full screen that is captured. Right now, nothing I do will allow me to capture the correct area. And although my conversion creates a rectangle of the correct size. Is this possibly a case where my coordinates are upside down? And if this is the case, how to I apply a transform to flip the origin's x coordinate? I attempted an affine transform however it doesn't work the same in Mac as iPhone so I'm clueless on how to use affine transform On Jul 1, 2011, at 1:52 PM, Lee Ann Rucker wrote: On Jul 1, 2011, at 1:14 PM, Andy Lee wrote: On Jul 1, 2011, at 2:43 PM, Development wrote: I have tried having the view itself use convertRectToBase passing the screen bounds. That method doesn't do what you think it does. The docs say pretty clearly you should pass it a rect in the receiver’s coordinate system. This is a method of NSView, so the receiver is the view, and question is what is the rect being converted to? I *partly* blame the docs and/or the method name, because it isn't clear what base means in the method name. This has always bugged me. As far as I can tell it means the window's coordinate system, so I don't know why they didn't name the method convertRectToWindow:. http://groups.google.com/a/chromium.org/group/chromium-dev/browse_thread/thread/6b989dcbb79e9ba/029eeb633c5287cc Quote: If you want to convert to/from the window's base coordinate system, use the original -convert[xx]:[to|from]View: and pass in a nil view. What those base calls do is a conversion to the base coordinate system which isn't the window base coordinate system. This will not get you the coordinates you want. Don't use them. (The base coordinate system has to do with resolution independence; go look it up.) Anyway, check out NSView's window method, and NSWindow's convertBaseToScreen: method. See the docs for what these methods return. --Andy This creates a rectangle of the correct size but the origin is always, no matter what, 15,183. I'm totally lost here and don't even know what to search for now that my other attempts have failed. Could some one help me out? I'm hoping to find something with low overhead as clicks are a factor.___ 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/aglee%40mac.com This email sent to ag...@mac.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/lrucker%40vmware.com This email sent to lruc...@vmware.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: From a view rect to a screen rect
On Jul 1, 2011, at 4:52 PM, Lee Ann Rucker wrote: http://groups.google.com/a/chromium.org/group/chromium-dev/browse_thread/thread/6b989dcbb79e9ba/029eeb633c5287cc Quote: If you want to convert to/from the window's base coordinate system, use the original -convert[xx]:[to|from]View: and pass in a nil view. What those base calls do is a conversion to the base coordinate system which isn't the window base coordinate system. This will not get you the coordinates you want. Don't use them. (The base coordinate system has to do with resolution independence; go look it up.) Good to know, thanks! --Andy ___ 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
key equivalents question
Newbie, here... hope I'm posting to the correct list. In Interface Builder of Xcode 4, I set a key equivalent for my menu items. Sometimes they work, but sometimes they don't. What am I doing wrong? For Example, setting a key equivalent of command-6 for my View-Full Screen menu item works. But, setting the key equivalent to command-f or option-f or command-space does not work. Is there something that I need to do, in addition to setting the key equivalent in Interface Builder? And why does that work for some choices of keys but not other choices? -- Brian ___ 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: From a view rect to a screen rect
On Jul 1, 2011, at 5:47 PM, Development wrote: These don't seem to work. The origin is still way way way off NSRect n1=[imageView convertRect:selection toView:nil]; NSPoint p1 = [window convertBaseToScreen:n1.origin]; Does any one know how to take a selected area within a view and translate it so that it resizes itself and then adjusts it's origin. Maybe I didn't explain well enough. I have a 800X600 rectangle which contains an image capture of the full screen. Within the 800X600 rectangle you can select a smaller area. This smaller selection should then become the area of the actual full screen that is captured. The Cocoa methods we have been talking about use different coordinate systems to specify the same physical point on screen. Look at the period in the previous sentence, which is being displayed by a view. It has (x,y) coordinates within the view's coordinate system. That same period has *different* coordinates within the window's coordinate system, and still different coordinates in the screen's coordinate system. Same point -- it didn't move anywhere. Different coordinates. That's what the convert methods are for. You don't want that. You want to calculate the physical point on the screen (in display coordinates as it turns out, not screen coordinates) that corresponds proportionally to a physical point in your view (given in view coordinates). This is almost always a *different* physical point. You can put a finger on one of these points and a different finger on the other. Right now, nothing I do will allow me to capture the correct area. And although my conversion creates a rectangle of the correct size. Is this possibly a case where my coordinates are upside down? And if this is the case, how to I apply a transform to flip the origin's x coordinate? I attempted an affine transform however it doesn't work the same in Mac as iPhone so I'm clueless on how to use affine transform I don't think this has anything to do with affine transform. You implied that your original code was generating the proper screen coordinates. You mentioned that you changed to using CGDisplayCreateImageForRect and that's what broke the code. * What coordinate system does CGDisplayCreateImageForRect use? * Where is the origin in that coordinate system? * Where is the origin in the screen coordinate system? I *think* you can fix the problem by fixing the math in your original post, which generated a result in screen coordinates. I suggest you draw a picture. --Andy On Jul 1, 2011, at 1:52 PM, Lee Ann Rucker wrote: On Jul 1, 2011, at 1:14 PM, Andy Lee wrote: On Jul 1, 2011, at 2:43 PM, Development wrote: I have tried having the view itself use convertRectToBase passing the screen bounds. That method doesn't do what you think it does. The docs say pretty clearly you should pass it a rect in the receiver’s coordinate system. This is a method of NSView, so the receiver is the view, and question is what is the rect being converted to? I *partly* blame the docs and/or the method name, because it isn't clear what base means in the method name. This has always bugged me. As far as I can tell it means the window's coordinate system, so I don't know why they didn't name the method convertRectToWindow:. http://groups.google.com/a/chromium.org/group/chromium-dev/browse_thread/thread/6b989dcbb79e9ba/029eeb633c5287cc Quote: If you want to convert to/from the window's base coordinate system, use the original -convert[xx]:[to|from]View: and pass in a nil view. What those base calls do is a conversion to the base coordinate system which isn't the window base coordinate system. This will not get you the coordinates you want. Don't use them. (The base coordinate system has to do with resolution independence; go look it up.) Anyway, check out NSView's window method, and NSWindow's convertBaseToScreen: method. See the docs for what these methods return. --Andy This creates a rectangle of the correct size but the origin is always, no matter what, 15,183. I'm totally lost here and don't even know what to search for now that my other attempts have failed. Could some one help me out? I'm hoping to find something with low overhead as clicks are a factor.___ 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/aglee%40mac.com This email sent to ag...@mac.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
-[NSManagedObjectContext save:] takes 30 minutes, then crashes out of memory
I have an app which writes a log to a Core Data SQLite store. I just got a Logs.sql file from a user. It is 270 KB, containing 1251 log entries. Upon launch, the app finds that 284 entries are expired and deletes them. Nothing out of the ordinary so far. App then executes -[NSManagedObjectContext save:]. This method thrashes for 30 minutes, with memory usage increasing slowly, until system won't give any more and then it crashes. Is there any programming error by which I could make a Core Data store unsaveable like this? I don't think so. Probably I should report this as a bug if it does it in Lion. More generally, can anyone suggest how to recover when an Apple method won't return on the main thread? If it was on a secondary thread, I could kill it with a timeout (leaks, I know), but anyhow I've never considered myself smart enough to do Core Data on secondary threads. Usually this little task takes a few milliseconds, and I slip it in during idle time. Jerry Krinock ___ 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: key equivalents question
On 2011 Jul 01, at 17:12, Brian Gardner wrote: Is there something that I need to do, in addition to setting the key equivalent in Interface Builder? No. And why does that work for some choices of keys but not other choices? The short answer is: that's the way it is, and you need to restrict yourself to key equivalents that work. Here's a longer answer, which probably has some errors which someone will please correct. Some key equivalents are handled by prior objects in the responder chain, or trapped by lower levels of the system. • ⌘space is swallowed by Spotlight. • ⌘F may be swallowed by a text view, to Find text. Look in the Edit menu and see if ⌘F is assigned there. • I think that ⌥-anything is swallowed by the text input system, for alternate characters. For example, when I type ⌥F I get the character ƒ. Does anyone know a document sets forth all the restrictions? I know that some apps override the restrictions. For example, LaunchBar hijacks ⌘space from Spotlight and QuicKeys can assign shortcuts to ⌥whatever. Does anyone know how they do that? Some of the answers may be in here: http://developer.apple.com/library/mac/#documentation/Cocoa/Conceptual/EventOverview/EventArchitecture/EventArchitecture.html%23//apple_ref/doc/uid/1060i-CH3-SW10 although they seem to concentrate mostly on what happens assuming that the key event makes it to your app. ___ 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
