Re: Crashes while reordering columns in a NSTableView
On 22/07/2009, at 2:42 AM, Nick Zitzmann wrote:
One thought: Are you using the -CGImage method of NSBitmapImageRep
anywhere? If so, then you absolutely must not deallocate the
NSBitmapImageRep while the CGImageRef is live, because the
CGImageRef acquired via -CGImage is still using the
NSBitmapImageRep's data.
Hm, that's interesting. I'm using Garbage Collection, so does this
mean that I can't do this and get away with it?:
@implementation NSImage (Additions)
- (CGImageRef)CGImage;
{
return [[[NSBitmapImageRep alloc] initWithData:[self
TIFFRepresentation]] CGImage];
}
@end
Could explain a few things...
--
Rob Keniger
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Re: The iPhone SDK OpenGL ES Application template
Thank you David for the tip! On Wed, Jul 22, 2009 at 5:11 AM, David Duncan david.dun...@apple.comwrote: On Jul 21, 2009, at 10:18 AM, Wilson Chen wrote: My question is: since an EAGLView is a subclass of UIView, is there a particular reason for the template to not follow the common pattern to adhere the beloved MVC? There is really no difference in if you want to have the view controller or not. About the only thing to keep in mind is that if you do use a view controller, don't use the orientation change support. -- 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
Recording phone calls
Is it possible to develop an application for recording phone calls? I'm using iPhone OS 2.2. Thanks in advance Mahaboob ___ 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: Recording phone calls
No. Not using published APIs in 2.2 (or 3.0). No access to the phone piece whatsoever. Mahaboob wrote: Is it possible to develop an application for recording phone calls? I'm using iPhone OS 2.2. Thanks in advance Mahaboob ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/rols%40rols.org This email sent to r...@rols.org ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: Recording phone calls
On Jul 22, 2009, at 2:19 AM, Mahaboob wrote: Is it possible to develop an application for recording phone calls? Possible? Maybe. Supported? No. -jcr ___ 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
Apple's Reducer Example
Hi, I am currently writing something VERY similiar to Apple's Reducer App: http://developer.apple.com/SampleCode/Reducer/index.html I'm a Noob and have re-written the code to fit my needs (which is just the rescaling part) to my needs but there is one Binding i can't get working. I can't open the Nib file (it needs the IB Plugin/Palette which comes with the project but can't be compiled) So i need someone who is kind enough to have a look at the Apple Code (and maybe mine) to tell how i have to set up the Bindings for the Filetype Popup Menu. In this ZIP file you will find two project: * One's called Reducer, which is Apple's original Reducer.app * The other on is called Reduzer which is my rewrite. http://music.zettt.de/tmp/reducer.zip Thanks, Zettt ___ 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
Changing default button cell in Cocoa Application
I have a window winUser with two buttons bntEnter and bntBuild. I am trying to switch the default button between the two as the program progresses. Initially both buttons are disabled. After the user enters some text fields I set bntEnter as the default with [winUser setDefaultButtonCell:[btnEnter cell]]; which works fine. The button highlights and acts on Return key. In the Enter handler I attempt to switch to bntBuild as the default button cell using: [winUser setDefaultButtonCell:[btnBuild cell]]; The Build button highlights but when I press Return key the Enter button flashes and the Enter handler is called, NOT the Build handler. I put in debug code to query and log the winUser's default button cell at IT reports the (desired) values of btnEnter and btnBuild respectively. It seems that once the default is set it cannot be changed. I am developing with XCode 3.1.2 in Leopard but targeting to 10.4. I have tried disabling and enabling the default button cell as part of the process, and using setKeyEquivalent but always get the same result. Is there more to switching the default button cell than setDefaultButton? Help greatly appreciated. ___ 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: Recording phone calls
Well, technically I suppose the user could start a phone call, then hit the home button launch your recording app, then you could start recording whatever the microphone picks up... On Wed, Jul 22, 2009 at 10:26 AM, Roland Kingr...@rols.org wrote: No. Not using published APIs in 2.2 (or 3.0). No access to the phone piece whatsoever. Mahaboob wrote: Is it possible to develop an application for recording phone calls? I'm using iPhone OS 2.2. Thanks in advance Mahaboob ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/rols%40rols.org This email sent to r...@rols.org ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/maillist%40steelskies.com This email sent to maill...@steelskies.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: Found Re: List FAQ and Cocoa learning resources
On 21 Jul 2009, at 19:22, Erik Buck wrote: Sorry. Right after I posted, I found http://www.cocoadev.com/index.pl?FAQs I should add, since the top link on that page is mine, that I haven't updated that document for ages, and while it covers some basic things and links to some other useful documents, there's a lot of newer stuff (notably things like Core Data, and ObjC 2 features like properties and fast enumeration) that just aren't covered. It'd be nice to have an official FAQ for the list... 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: Recording phone calls
I did like this, but the voice is not getting recorded while I'm making a call. If I developed this application, will apple store approve this? On 7/22/09 3:06 PM, Jonathan del Strother maill...@steelskies.com wrote: Well, technically I suppose the user could start a phone call, then hit the home button launch your recording app, then you could start recording whatever the microphone picks up... On Wed, Jul 22, 2009 at 10:26 AM, Roland Kingr...@rols.org wrote: No. Not using published APIs in 2.2 (or 3.0). No access to the phone piece whatsoever. Mahaboob wrote: Is it possible to develop an application for recording phone calls? I'm using iPhone OS 2.2. Thanks in advance Mahaboob ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/rols%40rols.org This email sent to r...@rols.org ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/maillist%40steelskies.com This email sent to maill...@steelskies.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: Recording phone calls
well that's impossible to say and not a cocoa question. If you use only public APIs and satisfy the other store conditions then I don't see why not. But you really cannot say and I've certainly not read the app conditions document recently. If it worked just grabbing from the microphone, the built-in voice recording app would do this but that explicitly disables that when you're on a call. Mahaboob wrote: I did like this, but the voice is not getting recorded while I'm making a call. If I developed this application, will apple store approve this? On 7/22/09 3:06 PM, Jonathan del Strother maill...@steelskies.com wrote: Well, technically I suppose the user could start a phone call, then hit the home button launch your recording app, then you could start recording whatever the microphone picks up... On Wed, Jul 22, 2009 at 10:26 AM, Roland Kingr...@rols.org wrote: No. Not using published APIs in 2.2 (or 3.0). No access to the phone piece whatsoever. Mahaboob wrote: Is it possible to develop an application for recording phone calls? I'm using iPhone OS 2.2. Thanks in advance Mahaboob ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/rols%40rols.org This email sent to r...@rols.org ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/maillist%40steelskies.com This email sent to maill...@steelskies.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/rols%40rols.org This email sent to r...@rols.org ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: Recording phone calls
On Jul 22, 2009, at 3:12 AM, Mahaboob mahab...@newtok.com wrote: If I developed this application, will apple store approve this? None of us is in any position to speculate about the actions of the App Store approval team on a hypothetical application. But it is important to note that wiretapping laws in the Unites States vary from state to state, and most states require the consent of both parties for one party to record the conversation. Apple might want to limit their liability in this regard. --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
dragging to move objects around?
Hi
I am trying to implement the ability to move subviews around a view by
dragging them. The simple code I have thus far:
- (void)draggedImage:(NSImage *)anImage endedAt:(NSPoint)aPoint
operation:(NSDragOperation)operation{
[self setFrameOrigin:[self convertPointFromBase:aPoint]];
}
Here the image that is moving about is an exact copy of the original
subview. When the endedAt method executes, I would like the subview's frame
to be changed to where the last position of the dragged image was. The code
I have thus far is producing some undpredictable results. for example, i'll
drag the subview straight down ( no change in x) but the subview will be
moved somehwere far to the left or right.
--
Darren Minifie
Computer Science Masters Candidate
University of Victoria, BC. Canada
My Rants: www.noisyair.com
My Band: www.ohsnapmusic.com
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Re: Changing default button cell in Cocoa Application
You can make this change without using setDefaultButtonCell at all. Just make sure you change btnEnter's key equivalent to be something other than return before changing btnBuild's to be return. [btnEnter setKeyEquivalent:@]; [btnBuild setKeyEquivalent:@\r]; On Jul 21, 2009, at 11:43 AM, Kerms Technical Services wrote: I have a window winUser with two buttons bntEnter and bntBuild. I am trying to switch the default button between the two as the program progresses. Initially both buttons are disabled. After the user enters some text fields I set bntEnter as the default with [winUser setDefaultButtonCell:[btnEnter cell]]; which works fine. The button highlights and acts on Return key. In the Enter handler I attempt to switch to bntBuild as the default button cell using: [winUser setDefaultButtonCell:[btnBuild cell]]; The Build button highlights but when I press Return key the Enter button flashes and the Enter handler is called, NOT the Build handler. I put in debug code to query and log the winUser's default button cell at IT reports the (desired) values of btnEnter and btnBuild respectively. It seems that once the default is set it cannot be changed. I am developing with XCode 3.1.2 in Leopard but targeting to 10.4. I have tried disabling and enabling the default button cell as part of the process, and using setKeyEquivalent but always get the same result. Is there more to switching the default button cell than setDefaultButton? Help greatly appreciated. ___ 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/dave.fernandes%40utoronto.ca This email sent to dave.fernan...@utoronto.ca ___ 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
When saving the managed object context
How can I do some custom stuff before my NSManagedObjectContext saves? (I want to cleanup some garbage that might get created while my app is running). In my case this would be faster to do than override my NSManagedObject didTurnIntoFault. So, to do this, is it safe for me to subclass NSManagedObjectContext and override save:? Or is this one of those methods I should not override? Any better ways? _ Drag n’ drop—Get easy photo sharing with Windows Live™ Photos. http://www.microsoft.com/windows/windowslive/products/photos.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: dragging to move objects around?
Hi Darren,
The point passed into -draggedImage:endedAt:operation: is in screen
coordinates, which is different from the window base coordinates that -
convertPointFromBase: expects. You want to convert from screen to
base, and then from base to your superview's coordinate system
(because the frame rect that you are setting is in terms of your
superview's coordinates):
aPoint = [[self window] convertScreenToBase:aPoint];
aPoint = [[self superview] convertPointFromBase:aPoint];
[self setFrameOrigin:aPoint];
I'll also mention that what you are doing here is not what is
generally intended by the dragged image protocol. It is usually used
for things like dragging icons or URLs to different apps/windows. If
you want to move something around within a single view you'd generally
detect what you clicked on in -mouseDown: and track the mouse in -
mouseDragged:. You can reset your view's frame on every mouseDragged:
call, so that the user will see the original view being moved around
on your view instead of an image lifted up from your window and
dragged anywhere on screen and then dropped.
Hope this helps,
- Greg
On Jul 22, 2009, at 4:27 AM, Darren Minifie wrote:
Hi
I am trying to implement the ability to move subviews around a view by
dragging them. The simple code I have thus far:
- (void)draggedImage:(NSImage *)anImage endedAt:(NSPoint)aPoint
operation:(NSDragOperation)operation{
[self setFrameOrigin:[self convertPointFromBase:aPoint]];
}
Here the image that is moving about is an exact copy of the original
subview. When the endedAt method executes, I would like the
subview's frame
to be changed to where the last position of the dragged image was.
The code
I have thus far is producing some undpredictable results. for
example, i'll
drag the subview straight down ( no change in x) but the subview
will be
moved somehwere far to the left or right.
--
Darren Minifie
Computer Science Masters Candidate
University of Victoria, BC. Canada
My Rants: www.noisyair.com
My Band: www.ohsnapmusic.com
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Re: When saving the managed object context
On Jul 22, 2009, at 7:22 AM, Squ Aire wrote: How can I do some custom stuff before my NSManagedObjectContext saves? Register for NSManagedObjectContextWillSaveNotification. mmalc ___ 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: Recording phone calls
Recorder on the app store does it. -- CEO WebIS Sent from my phone On Jul 22, 2009, at 4:26 AM, Roland King r...@rols.org wrote: No. Not using published APIs in 2.2 (or 3.0). No access to the phone piece whatsoever. Mahaboob wrote: Is it possible to develop an application for recording phone calls? I'm using iPhone OS 2.2. Thanks in advance Mahaboob ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/rols%40rols.org This email sent to r...@rols.org ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/alex%40webis.net This email sent to a...@webis.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: When saving the managed object context
I see no such thing in my docs. Only DidSave. Not WillSave. From: mmalc_li...@me.com Date: Wed, 22 Jul 2009 07:54:30 -0700 To: cocoa-dev@lists.apple.com Subject: Re: When saving the managed object context On Jul 22, 2009, at 7:22 AM, Squ Aire wrote: How can I do some custom stuff before my NSManagedObjectContext saves? Register for NSManagedObjectContextWillSaveNotification. mmalc ___ 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/squ4r3%40live.com This email sent to squ...@live.com _ Drag n’ drop—Get easy photo sharing with Windows Live™ Photos. http://www.microsoft.com/windows/windowslive/products/photos.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: When saving the managed object context
On Jul 22, 2009, at 8:05 AM, Squ Aire wrote: On Jul 22, 2009, at 7:22 AM, Squ Aire wrote: How can I do some custom stuff before my NSManagedObjectContext saves? Register for NSManagedObjectContextWillSaveNotification. I see no such thing in my docs. Only DidSave. Not WillSave. Sorry, I've got used to answering iPhone-related questions... mmalc ___ 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: dragging to move objects around?
I didn't see any actual question. I think you also need to post more code if you want anything better than wild guesses about what you are doing. Start here: http://developer.apple.com/documentation/Cocoa/Conceptual/DragandDrop/DragandDrop.html I assume you are using - (void)dragImage:(NSImage *)anImage at:(NSPoint)imageLoc offset:(NSSize)mouseOffset event:(NSEvent *)theEvent pasteboard:(NSPasteboard *)pboard source:(id)sourceObject slideBack:(BOOL)slideBack What offset are you using, and does that account for changes in x position? ___ 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: Recording phone calls
not really, not if we're talking about the same app. The one I've seen pushes calls through an external service and the recording is done there ... Can Recorder record phone calls? Yes. Recorder 10 can record outgoing calls through an external service. Because we have to work directly with the phone company to do this, there is a per minute charge, and it only works in the US for now. On Jul 22, 2009, at 11:03 PM, Alex Kac wrote: Recorder on the app store does it. -- CEO WebIS Sent from my phone On Jul 22, 2009, at 4:26 AM, Roland King r...@rols.org wrote: No. Not using published APIs in 2.2 (or 3.0). No access to the phone piece whatsoever. Mahaboob wrote: Is it possible to develop an application for recording phone calls? I'm using iPhone OS 2.2. Thanks in advance Mahaboob ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/rols%40rols.org This email sent to r...@rols.org ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/alex%40webis.net This email sent to a...@webis.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
NSSlider with multiple values?
Hello all, I have an NSSlider which can relate to multiple different values. What would be a good way of showing the user that if the touches the slider he will change all these values to the value on the slider? Like the dash in an NSCheckBox, but just for NSSlider. Best, ALEXander. ___ 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
UUID method Garbage Collection safe?
I've been using this method to make UUID strings:
+ (NSString *)stringWithUUID{ CFUUIDRef uuidObj = CFUUIDCreate(nil);
NSString *uuidString = (NSString*)CFUUIDCreateString(nil,uuidObj);
CFRelease(uuidObj); return [uuidString autorelease];}
How do you all like it? Is it ok? It's based on some code I Googled a while
back. In particular, is this code perfectly garbage collection safe?
_
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Re: UUID method Garbage Collection safe?
Correct code is:
+ (NSString *)stringWithUUID{ CFUUIDRef uuidObj = CFUUIDCreate(nil);
NSString *uuidString =
(NSString*)NSMakeCollectable(CFUUIDCreateString(nil,uuidObj));
CFRelease(uuidObj); return [uuidString autorelease];}
Or you will leak in GC.
--
Julien
On Wed, Jul 22, 2009 at 6:45 PM, Squ Aire squ...@live.com wrote:
I've been using this method to make UUID strings:
+ (NSString *)stringWithUUID{ CFUUIDRef uuidObj = CFUUIDCreate(nil);
NSString *uuidString = (NSString*)CFUUIDCreateString(nil,uuidObj);
CFRelease(uuidObj); return [uuidString autorelease];}
How do you all like it? Is it ok? It's based on some code I Googled a while
back. In particular, is this code perfectly garbage collection safe?
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Re: AppleScript Record and NSDictionary
Steve Cronin wrote: From my Cooca app I want to call an AppleScript with several parameters one of which is an AppleScript record. I've got everything about calling and return values working smoothly. What I can't seem to get is how to create that parameter record. ObjC-appscript's AEMCodecs class provides two-way mappings between NSDictionaries and other common Foundation classes and their NSAppleEventDescriptor equivalents. There's also an example project in the svn repository showing how it can be used in conjunction with NSAppleScript. When specifying record keys in your NSDictionary, use AEMType instances to signify AppleScript-defined property names, and NSStrings for user-defined identifiers. HTH has -- Control AppleScriptable applications from Python, Ruby and ObjC: http://appscript.sourceforge.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
List classes in Bundle?
Is there a way to actually list all the classes in a given bundle? I know I can look one up if I know the name but I would like to actually be able to present a list. ___ 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: List classes in Bundle?
On Jul 22, 2009, at 12:00 PM, Robert Mullen wrote: Is there a way to actually list all the classes in a given bundle? I know I can look one up if I know the name but I would like to actually be able to present a list. If the bundle is loaded, you should be able to iterate through all the classes in the system (using the various routines in the runtime), and check to see if bundleForClass returns the bundle you are looking for. If it hasn't been loaded, you can parse the macho file format and examine the objective-c sections, but that's a lot of work... Glenn Andreas gandr...@gandreas.com http://www.gandreas.com/ wicked fun! Mad, Bad, and Dangerous to Know ___ 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: UUID method Garbage Collection safe?
Or just use [[NSProcessInfo processInfo] globallyUniqueString]
Keith
On 22 Jul 2009, at 17:53, Julien Jalon wrote:
Correct code is:
+ (NSString *)stringWithUUID{ CFUUIDRef uuidObj = CFUUIDCreate(nil);
NSString *uuidString =
(NSString*)NSMakeCollectable(CFUUIDCreateString(nil,uuidObj));
CFRelease(uuidObj); return [uuidString autorelease];}
Or you will leak in GC.
--
Julien
On Wed, Jul 22, 2009 at 6:45 PM, Squ Aire squ...@live.com wrote:
I've been using this method to make UUID strings:
+ (NSString *)stringWithUUID{ CFUUIDRef uuidObj = CFUUIDCreate(nil);
NSString *uuidString = (NSString*)CFUUIDCreateString(nil,uuidObj);
CFRelease(uuidObj); return [uuidString autorelease];}
How do you all like it? Is it ok? It's based on some code I Googled
a while
back. In particular, is this code perfectly garbage collection safe?
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Re: List classes in Bundle?
I've not used it but I recalled a runtime function objc_copyClassNamesForImage() which you might be able to use to localise your search to a specific bundle (instead of enumerating all the Objective-C classes). Keith On 22 Jul 2009, at 18:05, glenn andreas wrote: On Jul 22, 2009, at 12:00 PM, Robert Mullen wrote: Is there a way to actually list all the classes in a given bundle? I know I can look one up if I know the name but I would like to actually be able to present a list. If the bundle is loaded, you should be able to iterate through all the classes in the system (using the various routines in the runtime), and check to see if bundleForClass returns the bundle you are looking for. If it hasn't been loaded, you can parse the macho file format and examine the objective-c sections, but that's a lot of work... Glenn Andreas gandr...@gandreas.com http://www.gandreas.com/ wicked fun! Mad, Bad, and Dangerous to Know ___ 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/keith_dev%40mac.com This email sent to keith_...@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: List classes in Bundle?
You can listen NSBundleDidLoadNotification notifications. it contains @NSLoadedClasses key in the userinfo dictionary. This probably won't work for frameworks loaded at launch time, but may be helpful in some cases. Le 22 juil. 09 à 19:29, Keith Duncan a écrit : I've not used it but I recalled a runtime function objc_copyClassNamesForImage() which you might be able to use to localise your search to a specific bundle (instead of enumerating all the Objective-C classes). Keith On 22 Jul 2009, at 18:05, glenn andreas wrote: On Jul 22, 2009, at 12:00 PM, Robert Mullen wrote: Is there a way to actually list all the classes in a given bundle? I know I can look one up if I know the name but I would like to actually be able to present a list. If the bundle is loaded, you should be able to iterate through all the classes in the system (using the various routines in the runtime), and check to see if bundleForClass returns the bundle you are looking for. If it hasn't been loaded, you can parse the macho file format and examine the objective-c sections, but that's a lot of work... Glenn Andreas gandr...@gandreas.com http://www.gandreas.com/ wicked fun! Mad, Bad, and Dangerous to Know ___ 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/keith_dev%40mac.com This email sent to keith_...@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/devlists%40shadowlab.org This email sent to devli...@shadowlab.org ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: GC'd app that keeps growing and growing
On Jul 22, 2009, at 10:30 AM, Tarek Khouzam wrote: So here is my issue. I have an app that when it should have hit the limit of memory it needs to use, it keeps growing over time. But after 12 hours or so its memory grows about 10x. So what I would like to know is where I should go from here? GC should be taking care of freeing unneeded memory. I can't use the old apps like leaks because its not valid anymore. Is there a technique or app that can show me what object is using all the memory ? Basically I am at wits end. I have tried Instruments but I have a better chance of reading Chinese then understanding what Instruments is tell me. Any help would be greatly appreciated. (This should be on Cocoa-dev) If you have access to Snow Leopard, use it for your analysis work. The tool chain on Snow Leopard is vastly improved. Under GC, you can still create situations that lead to heap bloat (to the point of causing a crash). Basically, if you have objects that are rooted -- are referenced by some global object somewhere, a global NSMutableArray* or a cache or something -- or if you call CFRetain() (or CF*Create*(), which returns a retained object) on an object and don't call CFMakeCollectable() or CFRelease(). Your analysis should focus on what is sticking around that shouldn't. With Instruments, the easiest approach is to use the ObjectAlloc instrument -- ObjectGraph will work, too, but ObjectAlloc is better for analyzing overall allocation populations. Try using the filter field at the bottom and look for whatever it is that is sticking around that shouldn't be. Given the consistent growth over time, it should be pretty obvious. Or you can use the 'heap' command line tool. Take a 'heap' snapshot shortly after lunch, then again after a few hours and compare the two. Once you have identified something, anything, that is sticking around, figure out where it is being allocated and/or retained. This is easily done with the ObjectAlloc instrument or you can set the MallocStackLoggingNoCompact environment variable and then use the malloc_history tool (see the malloc and malloc_history man pages). b.bum ___ 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: Cocoa-dev Digest, Vol 6, Issue 1051
On Jul 22, 2009, at 10:30 AM, Tarek Khouzam wrote: So here is my issue. I have an app that when it should have hit the limit of memory it needs to use, it keeps growing over time. But after 12 hours or so its memory grows about 10x. So what I would like to know is where I should go from here? GC should be taking care of freeing unneeded memory. I can't use the old apps like leaks because its not valid anymore. Is there a technique or app that can show me what object is using all the memory ? Basically I am at wits end. I have tried Instruments but I have a better chance of reading Chinese then understanding what Instruments is tell me. Any help would be greatly appreciated. I had a similar problem a few months ago. This thread may help: http://www.cocoabuilder.com/archive/message/cocoa/2009/3/12/232167 On Leopard at least, it seems that when nothing happens in the UI thread, the collector never kicks in. The workaround was to do something in the UI - click a menu, resize a window, etc. When I was further along in development and added a progress bar that was updated frequently, the symptom disappeared. Karl Moskowski kolpa...@voodooergonomics.com Voodoo Ergonomics Inc. http://voodooergonomics.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
[window frame] reporting wrong y coordinate
There is a sample application at:
http://www.ericgorr.net/cocoadev/WindowPosition.zip
and inside of the zip file is a screen shot (screen shot.tiff) of what
I see when I run the application.
It shows the lower y coordinate of the window at -24 and the window is
entirely on screen.
I have two screens connected to my machine.
The y coordinate [window frame] returns is only wrong when the
resolutions of the two screens are different and the window is on the
second screen (the one without the menubar).
In this particular instance, the resolution of the main screen was
1280x1024 and the resolution of the second screen was 1400x1050.
The code I wrote to get the coordinates of the window and put them on
the window is:
- (void)windowDidMove:(NSNotification *)notification
{
NSRect myLocation = [[notification object] frame];
NSString *myLocationString = NSStringFromRect( myLocation );
[windowCoordinates setStringValue:myLocationString];
}
The amount it is off by may be related to the height of the menu bar
on the main screen.
Perhaps [window frame] is supposed to work this way, but I would find
that to be quite odd and have not found any documentation supporting
this weird behavior.
I am running 10.5.7.
A bug will soon be filed with Apple.
p.s.
This situation is going to be seen by users with laptops who connect
to a second, larger monitor - which is what several users of our
application are doing and how this was discovered.
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Re: [window frame] reporting wrong y coordinate
On Wed, Jul 22, 2009 at 12:28 PM, Eric Gorrmail...@ericgorr.net wrote: There is a sample application at: http://www.ericgorr.net/cocoadev/WindowPosition.zip and inside of the zip file is a screen shot (screen shot.tiff) of what I see when I run the application. It shows the lower y coordinate of the window at -24 and the window is entirely on screen. I have two screens connected to my machine. The y coordinate [window frame] returns is only wrong when the resolutions of the two screens are different and the window is on the second screen (the one without the menubar). What you are seeing is expected based on what you describe. The main display (one with menu bar) defines the 0,0 origin for the virtual desktop and the origins for secondary displays are relative to that main display. Window frame coordinates are in terms of this virtual desktop not in terms of given display. -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
RE: UUID method Garbage Collection safe?
Thank you very much.
Date: Wed, 22 Jul 2009 18:53:57 +0200
Subject: Re: UUID method Garbage Collection safe?
From: jja...@gmail.com
To: squ...@live.com
CC: cocoa-dev@lists.apple.com
Correct code is:
+ (NSString *)stringWithUUID{ CFUUIDRef uuidObj = CFUUIDCreate(nil); NSString
*uuidString = (NSString*)NSMakeCollectable(CFUUIDCreateString(nil,uuidObj));
CFRelease(uuidObj); return [uuidString autorelease];}
Or you will leak in GC.
--
Julien
On Wed, Jul 22, 2009 at 6:45 PM, Squ Aire wrote:
I've been using this method to make UUID strings:
+ (NSString *)stringWithUUID{ CFUUIDRef uuidObj = CFUUIDCreate(nil); NSString
*uuidString = (NSString*)CFUUIDCreateString(nil,uuidObj); CFRelease(uuidObj);
return [uuidString autorelease];}
How do you all like it? Is it ok? It's based on some code I Googled a while
back. In particular, is this code perfectly garbage collection safe?
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RE: UUID method Garbage Collection safe?
Yes I was aware of this method. However, according to the docs it only
guarantees uniqueness for a given process, and doesn't guarantee it will be
globally unique, if you know what I mean. Thanks for the suggestion though.
Subject: Re: UUID method Garbage Collection safe?
From: keith_...@mac.com
Date: Wed, 22 Jul 2009 18:26:40 +0100
CC: squ...@live.com; cocoa-dev@lists.apple.com
To: jja...@gmail.com
Or just use [[NSProcessInfo processInfo] globallyUniqueString]
Keith
On 22 Jul 2009, at 17:53, Julien Jalon wrote:
Correct code is:
+ (NSString *)stringWithUUID{ CFUUIDRef uuidObj = CFUUIDCreate(nil);
NSString *uuidString =
(NSString*)NSMakeCollectable(CFUUIDCreateString(nil,uuidObj));
CFRelease(uuidObj); return [uuidString autorelease];}
Or you will leak in GC.
--
Julien
On Wed, Jul 22, 2009 at 6:45 PM, Squ Aire wrote:
I've been using this method to make UUID strings:
+ (NSString *)stringWithUUID{ CFUUIDRef uuidObj = CFUUIDCreate(nil);
NSString *uuidString = (NSString*)CFUUIDCreateString(nil,uuidObj);
CFRelease(uuidObj); return [uuidString autorelease];}
How do you all like it? Is it ok? It's based on some code I Googled
a while
back. In particular, is this code perfectly garbage collection safe?
_
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Re: [window frame] reporting wrong y coordinate
On Jul 22, 2009, at 3:36 PM, Shawn Erickson wrote: On Wed, Jul 22, 2009 at 12:28 PM, Eric Gorrmail...@ericgorr.net wrote: There is a sample application at: http://www.ericgorr.net/cocoadev/WindowPosition.zip and inside of the zip file is a screen shot (screen shot.tiff) of what I see when I run the application. It shows the lower y coordinate of the window at -24 and the window is entirely on screen. I have two screens connected to my machine. The y coordinate [window frame] returns is only wrong when the resolutions of the two screens are different and the window is on the second screen (the one without the menubar). What you are seeing is expected based on what you describe. The main display (one with menu bar) defines the 0,0 origin for the virtual desktop and the origins for secondary displays are relative to that main display. Window frame coordinates are in terms of this virtual desktop not in terms of given display. Interesting. Thank you. ___ 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: UUID method Garbage Collection safe?
On Jul 22, 2009, at 12:42 PM, Squ Aire wrote: Yes I was aware of this method. However, according to the docs it only guarantees uniqueness for a given process, and doesn't guarantee it will be globally unique, if you know what I mean. Thanks for the suggestion though. As the method name implies, it'll be globally unique. The string contains the mach absolute time, the pid, and some random gunk. So unless another machine executes -globallyUniqueString at exactly the same time from a process with the same pid while the two machine's entropy pools are in the same exact state, they'll be unique. b.bum ___ 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: UUID method Garbage Collection safe?
On Jul 22, 2009, at 3:42 PM, Squ Aire wrote: Yes I was aware of this method. However, according to the docs it only guarantees uniqueness for a given process, and doesn't guarantee it will be globally unique, if you know what I mean. Thanks for the suggestion though. The documentation for -[NSProcessInfo globallyUniqueString] does guarantee that the string will be globally unique. (The word global is right in the name.) What it it doesn't guarantee, though, is that it will give you back a UUID string (which is generally meant to be a specific kind of globally unique string.) -globallyUniqueString returns UUID strings today, but this wasn't always true. (And since it isn't guaranteed by the docs, may not be true in the future.) If you specifically need a UUID string, you should probably use CFUUID. - Jim ___ 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: Recording phone calls
Mahaboob wrote: If I developed this application, will apple store approve this? Given the laws governing the recording of telephone conversations, probably not. -- alfonso e. urdaneta red82.com - are you ready? ___ 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 make the Contextual Menu on the tableview's empty rows unable?
Hi everyone: In the Controller class, I used the code as follows to finished the contextual menu on the table view. And I succeeded. videoContextualMenu= [[[NSMenualloc] initWithTitle:@Contextual Menu] autorelease]; [videoContextualMenuinsertItemWithTitle:@Deleteaction:@selector(deleteVideoFile:) keyEquivalent:@ atIndex:0]; [videoContextualMenuinsertItemWithTitle:@Infoaction:@selector(infoFile:) keyEquivalent:@ atIndex:1]; [movieTablesetMenu:videoContextualMenu]; Now I hope the contextual menu disappears in the empty rows. And it is only valid in the rows which hold data. But I don't know how to implement the purpose... Any help greatly appreciated. Bright ___ 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 the Contextual Menu on the tableview's empty rows unable?
On 23/07/2009, at 1:03 PM, Bright wrote: Hi everyone: In the Controller class, I used the code as follows to finished the contextual menu on the table view. And I succeeded. [] Now I hope the contextual menu disappears in the empty rows. And it is only valid in the rows which hold data. But I don't know how to implement the purpose... Any help greatly appreciated. The menu is attached to the table view, so will appear no matter where you click. You could override -menuForEvent: and check the mouse location against the rows and return nil for empty rows, or invoke super for populated rows. But that means subclassing the table. --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
Core Animation rendering problem
Probably not the best subject line, but best I could come up with...
I an animating a ball across the screen, using this code:
CABasicAnimation *animation = [CABasicAnimation
animationWithKeyPath:@position];
animation.duration = duration;
animation.delegate = self;
animation.timingFunction = [CAMediaTimingFunction
functionWithName:kCAMediaTimingFunctionLinear];
animation.fromValue = [NSValue valueWithCGPoint:self.center];
animation.toValue = [NSValue valueWithCGPoint:intersectPt];
self.layer.position = intersectPt;
[self.layer addAnimation:animation forKey:@position];
No problem. Works great. Now, something happens and I want to stop
the motion of the ball, and start a new animation that increases the
diameter of the ball. I do so by doing
[self.layer removeAllAnimations];
if (speed 0) {
self.speed = 0.0;
CGPoint here = ((CALayer *)(self.layer.presentationLayer)).position;
self.center = here;
}
to stop the ball in place (which seems to work, as the following
animation is done at the correct location) and then I start a new
animation that increases the size of the ball, like so:
[UIView beginAnimations:nil context:NULL]; {
[UIView setAnimationDuration:0.5];
[UIView setAnimationDelegate:self];
[UIView
setAnimationDidStopSelector:@selector(explosion:finished:context:)];
[UIView setAnimationCurve:UIViewAnimationCurveLinear];
CGFloat delta = (kParticleSizeExplode - kParticleSizeNormal);
CGRect newBounds = self.bounds;
newBounds.origin.x -= delta/2.0;
newBounds.size.width += delta;
newBounds.origin.y -= delta/2.0;
newBounds.size.height += delta;
self.bounds = newBounds;
} [UIView commitAnimations];
The problem occurs while drawing the ball during this 2nd animation;
instead of redrawing the ball at increasing sizes, so it's nice and
round, instead it appears that the small ball is simply being scaled
up, and is very jaggy.
Here's my -drawRect: for the ball:
CGContextRef context = UIGraphicsGetCurrentContext();
const CGFloat *components = CGColorGetComponents(self.color);
CGContextSetRGBFillColor(context, components[0], components[1],
components[2], 1.0);
CGContextFillEllipseInRect(context, [self currentBounds]);
The -currentBounds method is a convenience method to get the current
bounds of the object, whether it is part of an animation currently or
not:
- (CGRect)currentBounds
{
CGRect bounds = CGRectZero;
CALayer *presLayer = self.layer.presentationLayer;
if (presLayer == nil) {
bounds = self.bounds;
}
else {
bounds = ((CALayer *)presLayer).bounds;
}
return bounds;
}
Any idea why the drawing is screwing up for the 2nd animation? Are
the 2 different methods of animating messing up each other somehow
(even though I've removed the 1st animation)?
Tips/suggestions/comments appreciated.
randy
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NSTableView - populating from C procedure
Hi, All,
This is my first attempt to deal with Cocoa container class, so I have
some unclear points. I've found one of many tutorials here:
http://www.cocoadev.com/index.pl?NSTableViewDataSource
where it is said, among other, that NSTableView items may be filled
out like this:
- (id)tableView:(NSTableView *)aTableView
objectValueForTableColumn:(NSTableColumn *)aTableColumn
row:(int)rowIndex {
return [[myTableViewArray objectAtIndex: rowIndex] objectForKey:
[aTableColumn identifier]]
}
My specifics is that the data (strings) are delivered by an external
procedure, located out of ObjC stuff, and returning C-style strings.
My table has only one column. My question is, as usual, about memory
manager: May I write something like this:
exern void getString(int row, char *s, int *len);
- (id)tableView:(NSTableView *)aTableView
objectValueForTableColumn:(NSTableColumn *)aTableColumn
row:(int)rowIndex {
char buf[255];
int len;
getString(rowIndex, buf, len);
return [NSString stringWithCString:buf length:len
encoding:NSUTF8StringEncoding];
}
I.e. is it possible to return a NSString without its preliminary
retaining?
Or should I add [... retain] to the returning string?
All examples operate by some values, stored in retained structures,
like NSArray. Here my question originates from.
Thanks.
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Re: NSTableView - populating from C procedure
On 23/07/2009, at 3:41 PM, Alexander Bokovikov wrote:
My specifics is that the data (strings) are delivered by an
external procedure, located out of ObjC stuff, and returning C-style
strings. My table has only one column. My question is, as usual,
about memory manager: May I write something like this:
exern void getString(int row, char *s, int *len);
- (id)tableView:(NSTableView *)aTableView
objectValueForTableColumn:(NSTableColumn *)aTableColumn
row:(int)rowIndex {
char buf[255];
int len;
getString(rowIndex, buf, len);
return [NSString stringWithCString:buf length:len
encoding:NSUTF8StringEncoding];
}
I.e. is it possible to return a NSString without its preliminary
retaining?
Or should I add [... retain] to the returning string?
Yes, that is the correct thing to do - you don't own the string, so
you shouldn't retain it.
BTW, watch out for a potential buffer overflow in getString(...), this
is the sort of thing viruses readily exploit.
--Graham
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