Re: Managed Object with Getter
On Tue, Jan 12, 2010 at 6:53 PM, Richard Somers rsomers.li...@infowest.com wrote: A property declaration attribute with the getter shown below does not work for a NSManagedObject subclass. @property (nonatomic, retain, getter=isSelected) NSNumber *selected; It produces error unrecognized selector sent to instance. What did I do wrong? This code cannot generate that error because it doesn't send any messages. You need to post the code to which the error actually refers. --Kyle ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post 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
Application help window size
Hi, All, Does anybody know how could I define default help window width? I've created a navigation menu, which is too wide for default window, so horizontal scrollbar appears. Or should I adjust my help design to the existing help window default size? Thanks, 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
Re: Application help window size
On 13/01/2010, at 7:35 PM, Alexander Bokovikov wrote: Hi, All, Does anybody know how could I define default help window width? I've created a navigation menu, which is too wide for default window, so horizontal scrollbar appears. Or should I adjust my help design to the existing help window default size? Thanks, Alexander The Help viewer window size is determined by the user. If I open help in AppA and resize it, then close it and later open help in AppB, the window is the size it was set to by the user in AppA. You might be able to use javascript to set the window size, but if I, as a user, like to have my help window a particular size, your app will change that and I, as a user, will be unhappy with your app. Consequences may flow :) Ron ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post 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
NSWeekCalendarUnit and DIN 1355 / ISO 8601
Hi list, I just fell over NSWeekCalendarUnit. It delivers the week of a date. Sadly it seems to do so only for the US but not for e.g. Germany and all ISO 8601 countries (most of europe) - except UK. The current week is 3 in the US but 2 in Europe (except UK ;) For a list see: http://en.wikipedia.org/wiki/Seven-day_week#Week_numbering Currently we use something like this: [[[NSCalendar currentCalendar] components:NSWeekCalendarUnit fromDate:[NSDate date]] week]; Is this a bug of NSCalendar or am I doing something wrong? atze ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: Managed Object with Getter
On Jan 13, 2010, at 1:17 AM, Kyle Sluder wrote:
This code cannot generate that error because it doesn't send any
messages. You need to post the code to which the error actually
refers.
This works.
@property (nonatomic, retain) NSNumber *selected;
if ([[self selected] boolValue]) { ... }
This produces error unrecognized selector sent to instance.
@property (nonatomic, retain, getter=isSelected) NSNumber
*selected;
if ([[self isSelected] boolValue]) { ... }
--Richard
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Re: Managed Object with Getter
On Jan 13, 2010, at 8:39 AM, Richard Somers wrote:
On Jan 13, 2010, at 1:17 AM, Kyle Sluder wrote:
This code cannot generate that error because it doesn't send any
messages. You need to post the code to which the error actually
refers.
This works.
@property (nonatomic, retain) NSNumber *selected;
if ([[self selected] boolValue]) { ... }
This produces error unrecognized selector sent to instance.
@property (nonatomic, retain, getter=isSelected) NSNumber *selected;
if ([[self isSelected] boolValue]) { … }
Assuming you are using @dynamic and relying on Core Data to generate the
accessors for you, that isn’t going to work. Core Data doesn’t support the
isPropertyName getter style.
This style is typically used for non-object BOOL values. If you use it for an
NSNumber attribute, you run the risk of someone familiar with the pattern
assuming it is a BOOL property and writing
if ([managedObject isSelected]) {
}
which will of course be be true whenever the property is non-nil, no regardless
of the actual value.
If you want or need to use custom getters/setters, you’ll have to provide your
own accessors rather than relying on the @dynamic generated ones.
- Jim___
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iPhone: CATransition done (get the key?)
Currently I am using CATransition to display a subview:
[window addSubview:monthView.view];
CATransition *animation = [CATransition animation];
[animation setDuration:0.25];
*[animation setDelegate:self];*
[animation setType:kCATransitionPush];
[animation setSubtype:kCATransitionFromLeft];
[animation setTimingFunction:[CAMediaTimingFunction
functionWithName:kCAMediaTimingFunctionEaseInEaseOut]];
[[monthView.view layer] addAnimation:animation forKey:@fadeIn];
So that delegate opens up a callback for animationDidStop:
- (void)animationDidStop:(CAAnimation *)theAnimation finished: (BOOL)flag {
However I also have a method to dismiss a subView using CATransition - and
the same callback is called. How can I determine what the *key* is in the
animationDidStop? I basically just need to determine in what context the
animationDidStop is being called.
Thanks for any pointers. Continuing to Google.
Eric
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Scaled NSImage size of NSImageView?
Hello all.
I want to get the actual size of the NSImage which I dragged into an
NSImaveView that has the imageScaling to NSImageScaleProportionallyUpOrDown.
I have found some answers on the web, but it seems Im still missing something,
or those answer don't apply to me.. On of them was to create a Category of
NSImageCell and there add a method like this
@implementation NSImageCell (XWSImageCellCategory);
-(NSRect)rectCoveredByImageInBounds:(NSRect) bounds{
return [super imageRectForBounds:bounds];
}
I have done that.. but Im getting still the size of the NSImageView.
I dunno if Im missing something in my Custom NSImageView, overriding some
method, but I don't see what might help me.
Thanks a lot
Best Regards
Gustavo Pizano
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coreAnimation CALayers and NSViews, which to use ?
Hi ! I'm new to coreAnimation, and there is something that I don't grasp yet. I'd like to composite a series of images (sometimes a few hundred) inside a view. Those images will sometimes remain where they are, or be resized or moved around. From what I understand, backing an NSView with a CALayer brings an optimized rendering pipeline (I guess using the GPU etc). From the docs, CALayers are described as model objects, used to orchestrate the drawings and animations. Alright. But the docs also describe how to use CALayer delegates to handle the actual drawing (drawLayer: inContext:). So this is getting me a bit confused. I've started to create a simple view hierarchy with a scrollview and an NSView in it, in IB, and I checked the wants coreAnimation layer on my NSView. Should I then override drawRect: in my view and draw each of my images there (intersecting the visible rect), or rather should I not create an NSView, and add programmatically a CALayer to the scrollview and override drawLayer: inContext: and do the drawing there ? Or (but this sound much heavier) should I add many NSViews or NSImageViews to the backing layer and move/resize them afterwards ? hm any light on this will be more than welcome ! 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
Re: Cocoa-dev Digest, Vol 7, Issue 57
NSImage *image = [imageView image]; //IBOutlet to ImageView
NSSize imageSize = [image size];
NSLog(@Height: %f, Width: %f, imageSize.height, imageSize.width);
This number stayed the same for me regardless of the scaling and matched the
dimensions specified in the Finder.
On Jan 14, 2010, at 12:46 AM, cocoa-dev-requ...@lists.apple.com wrote:
Hello all.
I want to get the actual size of the NSImage which I dragged into an
NSImaveView that has the imageScaling to NSImageScaleProportionallyUpOrDown.
I have found some answers on the web, but it seems Im still missing
something, or those answer don't apply to me.. On of them was to create a
Category of NSImageCell and there add a method like this
@implementation NSImageCell (XWSImageCellCategory);
-(NSRect)rectCoveredByImageInBounds:(NSRect) bounds{
return [super imageRectForBounds:bounds];
}
I have done that.. but Im getting still the size of the NSImageView.
I dunno if Im missing something in my Custom NSImageView, overriding some
method, but I don't see what might help me.
Thanks a lot
Best Regards
Gustavo Pizano
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Problem printing offscreen PDFViews
I have a situation where I want to print a multi-page PDF. While I
could use the PDFKit utility classes and/or quartz functions to get
the information to manually write drawing/pagination code for a NSView
subclass, I had thought that quicker alternative would be to create an
off-screen PDFView and tell it to print itself. When I tried this
solution, the print dialog didn't go away, all of the print settings
controls on the right half of the print dialog disappeared, and the
application froze.
I then wrote a tiny test application with the following method that
illustrates the problem. When the test program is compiled without the
USE_PDF_VIEW preprocessor macro defined, the blank view displays fine.
If USE_PDF_VIEW is defined, the document doesn't print, most of the
print dialog controls disappear, and the app freezes. While I have
other ways of accomplishing my goal, I'm curious as to why this
shortcut doesn't work. Is there something about Cocoa drawing I still
don't understand? Am I banging into Apple Voodoo Magic(tm) behind the
scenes that makes PDFView behave in a completely different way than
other NSViews?
- (void)printMyStuff:(id)sender {
NSPrintInfo *currInfo = [NSPrintInfo sharedPrintInfo];
#ifdef USE_PDF_VIEW
PDFView *pdfView = [[PDFView alloc] init];
PDFDocument *pdfDoc = [[PDFDocument alloc] initWithURL:[NSURL
fileURLWithPath:@/Users/wls/Documents/my_document.pdf]];
[pdfView setDocument: pdfDoc];
[pdfView printWithInfo:currInfo autoRotate:YES];
#else
NSView *myView = [[NSView alloc] initWithFrame:NSMakeRect(0, 0, 500,
500)];
NSPrintOperation *myop = [NSPrintOperation
printOperationWithView:myView printInfo:currInfo];
[myop runOperation];
#endif
}
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Re: iPhone: CATransition done (get the key?)
On 13 Jan 2010, at 8:44 AM, Eric E. Dolecki wrote:
Currently I am using CATransition to display a subview:
[window addSubview:monthView.view];
CATransition *animation = [CATransition animation];
[animation setDuration:0.25];
*[animation setDelegate:self];*
[animation setType:kCATransitionPush];
[animation setSubtype:kCATransitionFromLeft];
[animation setTimingFunction:[CAMediaTimingFunction
functionWithName:kCAMediaTimingFunctionEaseInEaseOut]];
[[monthView.view layer] addAnimation:animation forKey:@fadeIn];
So that delegate opens up a callback for animationDidStop:
- (void)animationDidStop:(CAAnimation *)theAnimation finished: (BOOL)flag {
However I also have a method to dismiss a subView using CATransition - and
the same callback is called. How can I determine what the *key* is in the
animationDidStop? I basically just need to determine in what context the
animationDidStop is being called.
Thanks for any pointers. Continuing to Google.
Do I understand correctly that you want to know which animation the
animationDidStop:finished: refers to? Why not use the theAnimation parameter?
You can retain a reference to your two animations and do
if (theAnimation == dismissAnimation)
to choose the proper action.
BTW, terminology nit: Delegate refers to the object responding to the
callback methods, not to any action of a delegate, object using a delegate, or
any occurrence of setting a delegate object.
— F
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Re: Scaled NSImage size of NSImageView?
On Jan 13, 2010, at 6:57 AM, Gustavo Pizano wrote: I want to get the actual size of the NSImage which I dragged into an NSImaveView that has the imageScaling to NSImageScaleProportionallyUpOrDown. Does requesting the size from the NSImage not do what you want? -- David Duncan Apple DTS Animation and Printing ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: coreAnimation CALayers and NSViews, which to use ?
On Jan 13, 2010, at 7:43 AM, Nicolas Berloquin wrote: Hi ! I'm new to coreAnimation, and there is something that I don't grasp yet. I'd like to composite a series of images (sometimes a few hundred) inside a view. Those images will sometimes remain where they are, or be resized or moved around. From what I understand, backing an NSView with a CALayer brings an optimized rendering pipeline (I guess using the GPU etc). From the docs, CALayers are described as model objects, used to orchestrate the drawings and animations. Alright. But the docs also describe how to use CALayer delegates to handle the actual drawing (drawLayer: inContext:). So this is getting me a bit confused. You can get content into a CALayer either by drawing content from Quartz (which is what the -drawLayer:inContext: delegate method is for) or by setting the contents property of the layer to one of a view supported class types (CGImageRef, NSImage on 10.6+, or the contents of another layer). When you layer back an NSView, it implements the machinery to get whatever drawing occurs inside of -drawRect: into the contents of the layer. I've started to create a simple view hierarchy with a scrollview and an NSView in it, in IB, and I checked the wants coreAnimation layer on my NSView. Should I then override drawRect: in my view and draw each of my images there (intersecting the visible rect), or rather should I not create an NSView, and add programmatically a CALayer to the scrollview and override drawLayer: inContext: and do the drawing there ? Or (but this sound much heavier) should I add many NSViews or NSImageViews to the backing layer and move/resize them afterwards ? The simplest way to get started is to pretend like layers don't exist and just build your view hierarchy as normal. Then as you already have, just turn on the Core Animation layer for root view (which will automatically turn on core animation for all child views). Once you've gotten the hang of what AppKit has to offer (and it does have quite a bit to offer) then you can consider diving deeper into using Core Animation directly. -- David Duncan Apple DTS Animation and Printing ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: Scaled NSImage size of NSImageView?
On Jan 13, 2010, at 5:53 PM, David Duncan wrote: On Jan 13, 2010, at 6:57 AM, Gustavo Pizano wrote: I want to get the actual size of the NSImage which I dragged into an NSImaveView that has the imageScaling to NSImageScaleProportionallyUpOrDown. Does requesting the size from the NSImage not do what you want? it gives me the size of the original image but not the scaled that is inside the NSImageView. G. -- David Duncan Apple DTS Animation and Printing ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: iPhone: CATransition done (get the key?)
Is there a way to do it without retaining a reference? I could do that, but
what is that key used for if not for referencing later somehow?
On Wed, Jan 13, 2010 at 11:43 AM, Fritz Anderson fri...@manoverboard.orgwrote:
On 13 Jan 2010, at 8:44 AM, Eric E. Dolecki wrote:
Currently I am using CATransition to display a subview:
[window addSubview:monthView.view];
CATransition *animation = [CATransition animation];
[animation setDuration:0.25];
*[animation setDelegate:self];*
[animation setType:kCATransitionPush];
[animation setSubtype:kCATransitionFromLeft];
[animation setTimingFunction:[CAMediaTimingFunction
functionWithName:kCAMediaTimingFunctionEaseInEaseOut]];
[[monthView.view layer] addAnimation:animation forKey:@fadeIn];
So that delegate opens up a callback for animationDidStop:
- (void)animationDidStop:(CAAnimation *)theAnimation finished: (BOOL)flag
{
However I also have a method to dismiss a subView using CATransition -
and
the same callback is called. How can I determine what the *key* is in the
animationDidStop? I basically just need to determine in what context the
animationDidStop is being called.
Thanks for any pointers. Continuing to Google.
Do I understand correctly that you want to know which animation the
animationDidStop:finished: refers to? Why not use the theAnimation
parameter? You can retain a reference to your two animations and do
if (theAnimation == dismissAnimation)
to choose the proper action.
BTW, terminology nit: Delegate refers to the object responding to the
callback methods, not to any action of a delegate, object using a delegate,
or any occurrence of setting a delegate object.
— F
--
http://ericd.net
Interactive design and development
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Re: Scaled NSImage size of NSImageView?
On Jan 13, 2010, at 9:17 AM, Gustavo Pizano wrote: On Jan 13, 2010, at 5:53 PM, David Duncan wrote: On Jan 13, 2010, at 6:57 AM, Gustavo Pizano wrote: I want to get the actual size of the NSImage which I dragged into an NSImaveView that has the imageScaling to NSImageScaleProportionallyUpOrDown. Does requesting the size from the NSImage not do what you want? it gives me the size of the original image but not the scaled that is inside the NSImageView. I see. That wasn't how I interpreted the question :). That said, I don't see how you couldn't just calculate this yourself. Just grab the size of the image, figure out what the less of the two scales you need to fit the width or height of the image view, then scale the other component by the same value. -- David Duncan Apple DTS Animation and Printing ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: Snapshotting hidden UIViews
On Tue, 12 Jan 2010 14:18:05 -0600, Michael Gardner gardne...@gmail.com said: I'm trying to create a snapshot UIImage from a UITextView that's inside a larger, hidden UIView. renderInContext: works fine for visible UIView layers, but I can't get consistent results for hidden views. I read somewhere (can't recall the source, but it wasn't authoritative) that this is expected behavior, and that -renderInContext: is only guaranteed to work for visible UIViews' layers. Is this true? If so, how else can I replicate *exactly* what my UITextView would look like when visible? In my JACTVocab app I have a similar problem: I need to make a snapshot of a situation in my window that doesn't exist yet. In other words, my window is in situation A, but I need a snapshot of situation B. I will eventually show the user situation B, but I need the snapshot first. So what I do is: I take a snapshot of situation A, and cover the window with a borderless window containing that snapshot. This hides what I am about to do in the real window. Now I change the situation in the window to situation B. The user cannot see this happening because snapshot of situation A is covering the window. Now I take the snapshot of situation B (this works perfectly well even though the second window is covering it). The hand is quicker than the eye, and the user never notices (I hope). Also, I use cacheDisplayInRect, not renderInContext. But it may be that there are reasons why you don't have that option... Hope this helps some - m. -- matt neuburg, phd = m...@tidbits.com, http://www.tidbits.com/matt/ A fool + a tool + an autorelease pool = cool! AppleScript: the Definitive Guide - Second Edition! http://www.tidbits.com/matt/default.html#applescriptthings ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post 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: Search multiple / all properties in single NSPredicate statement
Create a property for the target class that concatenates the text value of all the other properties of interest, and then search on that? On Jan 13, 2010, at 9:46 AM, cocoa-dev-requ...@lists.apple.com wrote: Message: 5 Date: Tue, 12 Jan 2010 17:10:10 -0800 From: Mike Chambers mikechamb...@gmail.com Subject: Search multiple / all properties in single NSPredicate statement To: cocoa-dev@lists.apple.com Message-ID: 844fa2bc1001121710y1603e480rcc3147de3eaf5...@mail.gmail.com Content-Type: text/plain; charset=ISO-8859-1 I am using NSPredicate to filter Mutable Arrays of objects. This works great. However, I have a need to filter on multi object properties in the Array. Basically, a full text search of the object properties. I know I can do this by creating a compound predicate for each field, but I wanted to check and see if there was an easier way to accomplish this. I tried to use a wildcard for the keypath: [NSPredicate predicateWithFormat@* == 'foo']; But, that doesnt work. Looking at the docs, I dont see a way to do this, but wanted to ping the list. So, is there anyway to search multiple / all object fields in a single predicate statement? ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post 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
Displaying a non-contentual menu attachPopUpWithFrame
In the 'Application Menu and Pop-up List Programming Topics for Cocoa' document it says: The preferred approach for programmatically displaying a non-contextual menu is to create an NSPopUpButtonCell object, set its menu, and then call send a attachPopUpWithFrame:inView: message to the pop-up button cell. I was wondering if anyone was aware of some sample code demonstrating this technique. 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: CATransition done (get the key?)
On Wed, 13 Jan 2010 09:44:55 -0500, Eric E. Dolecki edole...@gmail.com
said:
Currently I am using CATransition to display a subview:
[window addSubview:monthView.view];
CATransition *animation = [CATransition animation];
[animation setDuration:0.25];
*[animation setDelegate:self];*
[animation setType:kCATransitionPush];
[animation setSubtype:kCATransitionFromLeft];
[animation setTimingFunction:[CAMediaTimingFunction
functionWithName:kCAMediaTimingFunctionEaseInEaseOut]];
[[monthView.view layer] addAnimation:animation forKey:@fadeIn];
So that delegate opens up a callback for animationDidStop:
- (void)animationDidStop:(CAAnimation *)theAnimation finished: (BOOL)flag {
However I also have a method to dismiss a subView using CATransition - and
the same callback is called. How can I determine what the *key* is in the
animationDidStop? I basically just need to determine in what context the
animationDidStop is being called.
Thanks for any pointers. Continuing to Google.
I think this is what you're looking for:
http://developer.apple.com/mac/library/documentation/Cocoa/Conceptual/CoreAn
imation_guide/Articles/KVCAdditions.html
What this extremely cool first section is trying to tell you is that you can
set an arbitrary non-existent key on your animation and retrieve it later.
Arbitrary means you define the key - as if a CAAnimation were an
NSDictionary. So you can mark your animation in any way you want, as a way
of identifying it later. Example code typed in mail, don't take literally:
CATransition *animation = [CATransition animation];
[animation setValue: @fadeIn forKey: @wtfIsThis];
And later:
- (void)animationDidStop:(CAAnimation *)theAnimation finished: (BOOL)flag {
id wtf = [theAnimation valueForKey: @wtfIsThis]; // and so on
m.
--
matt neuburg, phd = m...@tidbits.com, http://www.tidbits.com/matt/
A fool + a tool + an autorelease pool = cool!
AppleScript: the Definitive Guide - Second Edition!
http://www.tidbits.com/matt/default.html#applescriptthings
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Re: iPhone: CATransition done (get the key?)
On Jan 13, 2010, at 11:18 AM, Eric E. Dolecki wrote:
Is there a way to do it without retaining a reference? I could do that, but
what is that key used for if not for referencing later somehow?
The key is used by the layer, not the animation. Animations are just generic
generators that take a time value and create a value - it's up to the layer
to decide what to do with that value.
You can always use CALayer's animationForKey: to find out if it the animation
for a specific key:
if ([theLayer animationForKey:@fadeIn] == theAnimation) {
}
Glenn Andreas gandr...@gandreas.com
http://www.gandreas.com/ wicked fun!
Mad, Bad, and Dangerous to Know
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Re: Scaled NSImage size of NSImageView?
Thanks David.. I did so.. I just thought there was such a methohd or something due that the image its already being scaled, so to don't make recalculations that were already done.. Anyway.. Thanks Gustavo On Jan 13, 2010, at 6:20 PM, David Duncan wrote: On Jan 13, 2010, at 9:17 AM, Gustavo Pizano wrote: On Jan 13, 2010, at 5:53 PM, David Duncan wrote: On Jan 13, 2010, at 6:57 AM, Gustavo Pizano wrote: I want to get the actual size of the NSImage which I dragged into an NSImaveView that has the imageScaling to NSImageScaleProportionallyUpOrDown. Does requesting the size from the NSImage not do what you want? it gives me the size of the original image but not the scaled that is inside the NSImageView. I see. That wasn't how I interpreted the question :). That said, I don't see how you couldn't just calculate this yourself. Just grab the size of the image, figure out what the less of the two scales you need to fit the width or height of the image view, then scale the other component by the same value. -- 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
Best practice example for a setup wizard?
Hi all, For one of my applications I want to do a check at startup to see whether a profile and password has been set for the current user, and if not to take them through a setup wizard. I'm sure I can mug my way through writing this but it feels like the kind of thing for which there might be an example illustrating best practice. Can anyone point me at some documentation or examples that might help? Thanks, Ian. -- Ian Piper ianpi...@mac.com -- If I'd asked people what they wanted, they would have said faster horses (Henry Ford) ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post 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: setTailIndent problems
On Jan 11, 2010, at 3:31 PM, Fabry, Geza wrote: I try to set tailIndent for an NSMutableParagraphStyle attribute of an NSMutableAttributedString. The documentation says: If positive, this is the distance from the leading margin (for example, the left margin in left-to-right text). That is, it's the absolute line width. If 0 or negative, it's the distance from the trailing margin-the value is added to the line width. I found however that both positive and negative values are measured from the right margin, positive values make the text narrower, negative values make it wider. (The same seems to be true for kCTParagraphStyleSpecifierTailIndent in CoreText). Is it a bug in the documentation, in functionality or in my code? Almost certainly your code. NSMutableParagraphStyle has been around a long time and as far as I can tell, it works as advertised. I don't know what you mean by positive values make the text narrower, negative values make it wider. Wider than what? Can you state specifically what you are observing? If both positive and negative values are measured from the right margin, then the line fragment widths would be the same whether the value is positive or negative, but you say they are different. -Ross ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post 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
NSDirectoryEnumerator and URLs
Hello all,
I'm using a directory enumerator to recurse through a series of directories,
and it always fails after going through a certain number of enumerations. If I
enumerate through the same directory over and over, it tends to fail in about
the same place, but if I enumerate through other directories, it will fail but
after completing a different number of enumerations, so I don't think it's
necessarily a memory thing or something wrong with my file system.
It always comes back with the same error number (256), which macerror cannot
identify:
2010-01-13 10:14:34.078 afindex[821:1b03] directoryEnumerator failed on enum
1598, error description: The operation couldn\U2019t be completed.
(NSCocoaErrorDomain error 256.)
Here's my code, I can't figure out why it's failing...
/* enumeration.m */
__block NSUInteger i = 0;
NSFileManager *fm = [[NSFileManager alloc] init];
NSDirectoryEnumerator *dirEnum = [fm enumeratorAtURL:folderURL
includingPropertiesForKeys:nil
options:NSDirectoryEnumerationSkipsHiddenFiles ^
NSDirectoryEnumerationSkipsPackageDescendants
errorHandler:^(NSURL *url, NSError *error){
NSLog(@directoryEnumerator failed on enum %i,
error description: %@,i,[error localizedDescription]);
return NO;
}];
NSAutoreleasePool *ap = [[NSAutoreleasePool alloc] init];
NSURL *aPath;
while (aPath = [dirEnum nextObject]) {
if ( 1 ) {
NSDictionary *metadataDict = [engine metadataDictionaryForFile:[aPath path] ];
[database indexMetadata:metadataDict forFileAtURL:aPath];
}
if (++i % 50 == 0 ) {
[ap release];
ap = [[NSAutoreleasePool alloc] init];
}
}
[path release];
[ap release];
[fm release];___
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NSScroller knob reposition
I am seeing some strange behavior.
I set the knob position of the horz and vert scrollers as follows:
- (void)centerScrollers {
[m_hScroller setDoubleValue:0.5];
[m_vScroller setDoubleValue:0.5];
}
Then when I move either knob with the mouse the other knob moves as
well by some random amount.
Doesn't seem like correct behavior to me.
-db
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Cocoaheads Lake Forest (92630) meeting TODAY Wed 1/13/2010 at 7 pm on topics including Core Animation
CocoaHeads Lake Forest will be meeting on the second Wednesday of the month. We will be meeting at the Orange County Public Library (El Toro) community room, 24672 Raymond Way, Lake Forest, CA 92630 Please join us tonight from 7pm to 9pm on Wednesday, 1/13. We will have a selection of topics tonight, including looking at the code from Core Animation by Bill Dudney. (If you have experience with this book, and want to comment or bring alternative code samples, please do so. This is to be an interactive session. We are planning our topics for 2010. If you are able and willing to speak on Core Animation, Open GL, Mac Open Source, or Cocoa 101 for either iPhone or Mac, please contact me. As I mentioned a few days ago, Google Irvine is having an open house on the 27th, and I can answer questions about it and arrange invites. There are several active 20% projects on the Mac platform. Bring your comments, your books, and your bugs, and we will leap right in. As always, details and the upcoming meeting calendar can be found at the cocoaheads web site at www.cocoaheads.org in the Lake Forest, CA section. ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post 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: NSDirectoryEnumerator and URLs
Isn't the path returned by NSDirectoryEnumerator a relative path to the path
you initialize it with?
The docs say: An NSDirectoryEnumerator object enumerates the contents of a
directory, returning the pathnames of all files and directories contained
within that directory. These pathnames are relative to the directory.
Have a look at the value of aPath - you might need to append it to the string
path of the folderURL...unless your engine is appending it.
On Jan 13, 2010, at 1:32 PM, Jamie Hardt wrote:
Hello all,
I'm using a directory enumerator to recurse through a series of directories,
and it always fails after going through a certain number of enumerations. If
I enumerate through the same directory over and over, it tends to fail in
about the same place, but if I enumerate through other directories, it will
fail but after completing a different number of enumerations, so I don't
think it's necessarily a memory thing or something wrong with my file system.
It always comes back with the same error number (256), which macerror cannot
identify:
2010-01-13 10:14:34.078 afindex[821:1b03] directoryEnumerator failed on enum
1598, error description: The operation couldn\U2019t be completed.
(NSCocoaErrorDomain error 256.)
Here's my code, I can't figure out why it's failing...
/* enumeration.m */
__block NSUInteger i = 0;
NSFileManager *fm = [[NSFileManager alloc] init];
NSDirectoryEnumerator *dirEnum = [fm enumeratorAtURL:folderURL
includingPropertiesForKeys:nil
options:NSDirectoryEnumerationSkipsHiddenFiles ^
NSDirectoryEnumerationSkipsPackageDescendants
errorHandler:^(NSURL *url, NSError *error){
NSLog(@directoryEnumerator failed on enum %i,
error description: %@,i,[error localizedDescription]);
return NO;
}];
NSAutoreleasePool *ap = [[NSAutoreleasePool alloc] init];
NSURL *aPath;
while (aPath = [dirEnum nextObject]) {
if ( 1 ) {
NSDictionary *metadataDict = [engine metadataDictionaryForFile:[aPath path]
];
[database indexMetadata:metadataDict forFileAtURL:aPath];
}
if (++i % 50 == 0 ) {
[ap release];
ap = [[NSAutoreleasePool alloc] init];
}
}
[path release];
[ap release];
[fm release];
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Re: iCal-style NSTextFields
I'm trying to implement this. I created a custom NSTextField subclass, called ICNTextField. When an ICNTextField instance receives a mouseDown event, it initializes a custom NSWindow subclass with a borderless window mask. In the window subclass, I've overridden -canBecomeKeyWindow: so that it always returns yes. When ICNTextField receives the controlTextDidEndEditing notification, it takes the string value from the text field in the borderless window and displays it properly, but the Core Data attribute to which the original text field is bound does not update its value. I've looked into endEditing and endEditing:, nextKeyView and various forms of commit, but can't seem to find a way to get the bindings to recognize the new string value. I'd like to do this in a generic fashion, so I can make any text field an ICNTextField and know that its bound attributes will be updated without having to write additional code for each text field. Any help would be appreciated. On Jan 10, 2010, at 2:54 PM, Josh Abernathy wrote: If you're asking about the shadow, create a child window and move them to that when they're editing. On Jan 10, 2010, at 11:56 AM, Seth Willits wrote: On Jan 10, 2010, at 11:49 AM, Ulai Beekam wrote: Go into iCal (in Snow Leopard) and create a new event and and then click outside that event. Then double-click on that event and hit the Edit button. In the window you see, you have some neat looking text fields that show only text when not in focus but show you a white background with a shadow effect when in edit mode. How can I make such text fields? Does anyone happen to have them ready-made? They're just text fields. Change the background color, turn off the border, and make them read-only when not in edit mode. -- Seth Willits ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/joshaber%40gmail.com This email sent to josha...@gmail.com ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/bradgibbs%40mac.com This email sent to bradgi...@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
Changing FirstResponder with Inputmethod
Hello,
I have NSTextField and some views(NSTableView etc).
I want interrupt keydown event when NSTextField is not first responder to input
the key to NSTextField.
I wrote keyDown: method of my NSWindowController class like below.
- (void)keyDown:(NSEvent *)event
{
// IBOutlet NSTextField* myInput;
if ([[self window] firstResponder] != myInput) {
[[self window] makeFirstResponder:myInput]; // to change
keyView
[[self window] sendEvent:event];
// to process keydown event
}
}
This works well when keyboard layout is US.
But when Japanese inputmethod is on, EXC_BAD_ACCESS on CopyRgn of
GetPortVisionRegion of CTextensionDisplay::Focus… is occur.
Does anyone have any idea?
--
imai asato
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Trying to create an alias file by using the new NSURL methods available with Mac OS X 10.6 !
Hello All,
Using the new NSURL methods available with Cocoa on Mac OS X 10.6, I am
trying to create an alias file to a certain file. However, this method
requires a NSURL data type. But I am writing a C program along with an
objective-C program to accomplish this. The C program would accept the
inputs as C strings. I would then convert them to NSString and then to NSURL
strings. However, this is not working :(
By hardcoding the NSURL strings the program works fine.
Below are the programs:
alias.c ===
/*==*/
#includestdio.h
#includeAvailabilityMacros.h
int CreateAlias(char *, char *);
int main(int argc, char *argv[])
{
#ifdef MAC_OS_X_VERSION_10_6
if (CreateAlias(argv[1], argv[2]))
printf(Successful\n);
else
printf(Failed\n);
#else
printf(Cannot create Alias files\n);
#endif
return 0;
}
/**/
createalias.m (I use the NSURL methods for creating Aliases )
/**/
#import Foundation/Foundation.h
int CreateAlias(const char *target, const char *aliasname)
{
CFStringRef Ref1 = CFStringCreateWithCString(NULL, target,
kCFStringEncodingASCII);
CFStringRef Ref2 = CFStringCreateWithCString(NULL, aliasname,
kCFStringEncodingASCII);
if (Ref1 == NULL || Ref2 == NULL)
exit(1);
NSString *Destination = (NSString *)Ref1;
NSString *Alias = (NSString *)Ref2;
//NSURL *src = [NSURL URLWithString:@file:///Alias_dir/aliastext];
//NSURL *dest = [NSURL URLWithString:@
file:///Alias_dir/aliastext.alias];
NSURL *src = [NSURL URLWithString:Destination];
NSURL *dest = [NSURL URLWithString:Alias];
if (src == nil || dest == nil)
exit(1); *// Did not exit here.*
NSData *bookmarkData =
[
src
bookmarkDataWithOptions:NSURLBookmarkCreationSuitableForBookmarkFile
includingResourceValuesForKeys:nil
relativeToURL:nil
error:NULL
];
if (bookmarkData == NULL)
exit(1); // Did not exit here.
BOOL ok = [NSURL writeBookmarkData:bookmarkData *// The program is
failing here*
toURL:dest
options:0
error:NULL];
if (ok == NO)
return 0;
return 1;
}
/*===*/
I also read that CFStringRef can be directly typecasted to NSString *which i
have done.
Can anyone tell me what the problem may be ?
Any comments ?
Thanks
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Re: Displaying a non-contentual menu attachPopUpWithFrame
Hi Eric, On SnowLeopard and later, use the NSMenu method popUpMenuPositioningItem: atLocation: inView:. Before SnowLeopard, this is probably the easiest way: NSPopUpButtonCell *cell = [[NSPopUpButtonCell alloc] initTextCell:@ pullsDown:NO]; [cell setMenu:menu]; [cell performClickWithFrame:NSMakeRect(menuLoc.x, menuLoc.y, 0, 0) inView:theView]; [cell release]; Hope this helps, -Peter On Jan 13, 2010, at 9:38 AM, Eric Gorr wrote: In the 'Application Menu and Pop-up List Programming Topics for Cocoa' document it says: The preferred approach for programmatically displaying a non-contextual menu is to create an NSPopUpButtonCell object, set its menu, and then call send a attachPopUpWithFrame:inView: message to the pop-up button cell. I was wondering if anyone was aware of some sample code demonstrating this technique. 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: NSDirectoryEnumerator and URLs (PS)
On Jan 13, 2010, at 11:38 AM, Robert Martin wrote:
PS - Also, when I use NSDirectoryEnumerator, it returns a string, not an
URL...
The documentation actually doesn't say... I assumed that a directory enumerator
that is created with a URL would return URLs, but I guess not... In any case,
mutatis mutandis, this code still fails in about the same way:
/* enumeration2.h */
-(void)indexFolder:(NSString *)folderPath {
NSString *localFolderPath = [folderPath copy];
NSFileManager *fm = [[NSFileManager alloc] init];
NSDirectoryEnumerator *dirEnum = [fm enumeratorAtPath:localFolderPath];
NSAutoreleasePool *ap = [[NSAutoreleasePool alloc] init];
NSString *aPath;
while (aPath = [dirEnum nextObject]) {
NSString *fullPath = [localFolderPath
stringByAppendingPathComponent:aPath];
BOOL isDir = NO;
if ( [fm fileExistsAtPath:fullPath isDirectory:isDir] !isDir ) {
NSDictionary *metadataDict = [engine metadataDictionaryForFile:fullPath
];
[database indexMetadata:metadataDict forFileAtPath:fullPath];
}
if (++i % 50 == 0 ) {
[ap release];
ap = [[NSAutoreleasePool alloc] init];
}
}
[localFolderPath release];
[ap release];
[fm release];
}___
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Re: Best practice example for a setup wizard?
Hi Ian, When you speak of a setup wizard, I think of those Windows-based apps with the Next and Back buttons. In my opinion, those wizards are very Windows-like, and therefore, annoying. ;) Have you considered displaying a regular dialog box that asks for the relevant information? Unless the profile must contain a high number of settings, a single dialog box, without multiple pages, should be the best interface to request a username and password. Even if the profile contains many settings, it may be best not to prompt for those at all, but rather to set up a profile with sensible defaults. The majority of users can start using the application without much up-front configuration (all they enter is a username and password) and can play with the configuration later to their heart's content. There is another benefit to this idea: when a user opens your application for the first time, he likely won't know what answers to provide to most of your setup questions. People often have a better idea of what they want after using a new application for a little while (and often they'll leave the defaults alone). Soong - Original Message From: Ian Piper ianpi...@mac.com To: list-cocoa-dev Developers cocoa-dev@lists.apple.com Sent: Wed, January 13, 2010 9:54:52 AM Subject: Best practice example for a setup wizard? Hi all, For one of my applications I want to do a check at startup to see whether a profile and password has been set for the current user, and if not to take them through a setup wizard. I'm sure I can mug my way through writing this but it feels like the kind of thing for which there might be an example illustrating best practice. Can anyone point me at some documentation or examples that might help? Thanks, Ian. -- Ian Piper ianpi...@mac.com -- If I'd asked people what they wanted, they would have said faster horses (Henry Ford) ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post 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/oftenwrongsoong%40yahoo.com This email sent to oftenwrongso...@yahoo.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: iPhone: CATransition done (get the key?)
If I try this:
- (void)animationDidStop:(CAAnimation *)theAnimation finished: (BOOL)flag {
NSLog(@%@, [theAnimation type]);
}
I get a warning - but it displays reveal when I use
kCATransitionReveal. (CAAnimation
may not respond to '-type')
If I used two different types of animation, I could use that to determine
what to do next - but I don't like that warning.
On Wed, Jan 13, 2010 at 12:40 PM, glenn andreas gandr...@mac.com wrote:
On Jan 13, 2010, at 11:18 AM, Eric E. Dolecki wrote:
Is there a way to do it without retaining a reference? I could do that,
but
what is that key used for if not for referencing later somehow?
The key is used by the layer, not the animation. Animations are just
generic generators that take a time value and create a value - it's up to
the layer to decide what to do with that value.
You can always use CALayer's animationForKey: to find out if it the
animation for a specific key:
if ([theLayer animationForKey:@fadeIn] == theAnimation) {
}
Glenn Andreas gandr...@gandreas.com
http://www.gandreas.com/ wicked fun!
Mad, Bad, and Dangerous to Know
--
http://ericd.net
Interactive design and development
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NSArrayControllers not repopulating after NSPersistentDocument load
Dear List,
I have an NSPersistentDocument app using CoreData for storage. I have three
NSArrayControllers to mediate between the three Entities in my Model and three
NSTableViews. Everything works fine until I load a previously saved file. At
that point, the controllers seem to have no content despite the fact that the
tables are properly populated. That is, the NSTableView shows data, but po
[self arrangedObjects] in GDB shows an empty array.
At first I figured it was a timing issue, so I delayed the attempt to
manipulate an object (accessed by [[self arrangedObjects] objectAtIndex:0])
with a message delayed by up to several seconds with no improvement. If I force
a fetch, I can retrieve the data, but for some reason the controller is not
taking care of this on its own. I have verified that the controller
automatically prepares content, and it's not fetching lazily, per IB. I'm
sure I've missed something obvious, but I'm stuck. I'm not sure if it's
relevant, but the value of [self managedObjectContext] is different if I check
it in the NSPersistentDocument object immediately after -
(BOOL)configurePersistentStoreCoordinatorForURL:(NSURL *)url ofType:(NSString
*)fileType modelConfiguration:(NSString *)configuration
storeOptions:(NSDictionary *)storeOptions error:(NSError **)error versus later,
when my controller tries to manipulate its content. Although I modified the
document's load method to investigate this (just a call to super followed by a
break point), the same behavior exists even without overriding this method. If
the answer is in the Apple Docs, I've missed it because I've read them several
times now. Incidentally, the Cannot access contents of an object controller
after a nib is loaded section of Core Data Programming Guide looked
promising, and fetchWithRequest:merge:error returns YES, but it still doesn't
cause the controller to repopulate. I've got perhaps 50 pieces of string data
stored in this document, so it's not a volume of data issue, I don't think.
Thanks for any insight.
-Dan
The troublesome code, from my NSArrayController subclass, follows. The object,
myNote, is sent, after a brief delay, from the Nib file of another object. I
verified it contains a valid NSDate object.
- (void) myChangeStartTime:(NSNotification *)myNote
{
[self setFilterPredicate:nil];
[self rearrangeObjects];
[[[self arrangedObjects] objectAtIndex:0] setValue:[[myNote object]
dateValue] forKey:kMyDateBindingKey];
}___
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Re: NSDirectoryEnumerator and URLs
On Jan 13, 2010, at 10:32, Jamie Hardt wrote: I'm using a directory enumerator to recurse through a series of directories, and it always fails after going through a certain number of enumerations. If I enumerate through the same directory over and over, it tends to fail in about the same place, but if I enumerate through other directories, it will fail but after completing a different number of enumerations, so I don't think it's necessarily a memory thing or something wrong with my file system. On the contrary, that behavior sounds *exactly* like a memory thing, or at least like a memory management problem. I notice that you don't take ownership of (retain) the NSDirectoryEnumerator object. There's no obvious reason why it should disappear before the next regular draining of its autorelease pool, but perhaps something is triggering an early draining. Also, if there happened to be any memory management bugs in the NSDirectoryEnumerator class itself, code like yours (using a subsidiary autorelease pool, in which any autoreleased memory allocated by the enumerator during the enumeration would be placed) would expose it. ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Image of minimized window using 10.4 APIs
I want to get the image of a minimized window that is in the dock and modify it. But here is the catch. I need this to work on 10.4 and up. The API miniwindowImage from NSWindow will only return something if you have modified the image. Is there a way to do this? Another way to do this is if I could create an image of a Window. I know how I would do that with the contentView but not the entire window. Any ideas on that? thanks -dave ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post 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: iCal-style NSTextFields
This sounds more like a CoreData or general controller problem than anything specific to iCal-style text fields. You might want to create a new thread for this. On Jan 13, 2010, at 11:44 AM, Brad Gibbs wrote: I'm trying to implement this. I created a custom NSTextField subclass, called ICNTextField. When an ICNTextField instance receives a mouseDown event, it initializes a custom NSWindow subclass with a borderless window mask. In the window subclass, I've overridden -canBecomeKeyWindow: so that it always returns yes. When ICNTextField receives the controlTextDidEndEditing notification, it takes the string value from the text field in the borderless window and displays it properly, but the Core Data attribute to which the original text field is bound does not update its value. I've looked into endEditing and endEditing:, nextKeyView and various forms of commit, but can't seem to find a way to get the bindings to recognize the new string value. I'd like to do this in a generic fashion, so I can make any text field an ICNTextField and know that its bound attributes will be updated without having to write additional code for each text field. Any help would be appreciated. On Jan 10, 2010, at 2:54 PM, Josh Abernathy wrote: If you're asking about the shadow, create a child window and move them to that when they're editing. On Jan 10, 2010, at 11:56 AM, Seth Willits wrote: On Jan 10, 2010, at 11:49 AM, Ulai Beekam wrote: Go into iCal (in Snow Leopard) and create a new event and and then click outside that event. Then double-click on that event and hit the Edit button. In the window you see, you have some neat looking text fields that show only text when not in focus but show you a white background with a shadow effect when in edit mode. How can I make such text fields? Does anyone happen to have them ready-made? They're just text fields. Change the background color, turn off the border, and make them read-only when not in edit mode. -- Seth Willits ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/joshaber%40gmail.com This email sent to josha...@gmail.com ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/bradgibbs%40mac.com This email sent to bradgi...@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/joshaber%40gmail.com This email sent to josha...@gmail.com ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: NSScroller knob reposition
On 13 Jan 2010, at 12:32 PM, David Blanton wrote:
I set the knob position of the horz and vert scrollers as follows:
- (void)centerScrollers {
[m_hScroller setDoubleValue:0.5];
[m_vScroller setDoubleValue:0.5];
}
Then when I move either knob with the mouse the other knob moves as well by
some random amount.
I think programmatically hauling the NSScrollers around just puts the UI out of
sync with the actual position of the scroll view.
If you want to make a certain part of a view visible inside an NSScrollView,
send scrollRectToVisible: to that view. See also the cousin scroll... methods
of NSView.
— F
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Re: Snapshotting hidden UIViews
On Jan 13, 2010, at 11:24 AM, Matt Neuburg wrote: On Tue, 12 Jan 2010 14:18:05 -0600, Michael Gardner gardne...@gmail.com said: I'm trying to create a snapshot UIImage from a UITextView that's inside a larger, hidden UIView. renderInContext: works fine for visible UIView layers, but I can't get consistent results for hidden views. I read somewhere (can't recall the source, but it wasn't authoritative) that this is expected behavior, and that -renderInContext: is only guaranteed to work for visible UIViews' layers. Is this true? If so, how else can I replicate *exactly* what my UITextView would look like when visible? In my JACTVocab app I have a similar problem: I need to make a snapshot of a situation in my window that doesn't exist yet. In other words, my window is in situation A, but I need a snapshot of situation B. I will eventually show the user situation B, but I need the snapshot first. So what I do is: I take a snapshot of situation A, and cover the window with a borderless window containing that snapshot. This hides what I am about to do in the real window. Now I change the situation in the window to situation B. The user cannot see this happening because snapshot of situation A is covering the window. Now I take the snapshot of situation B (this works perfectly well even though the second window is covering it). The hand is quicker than the eye, and the user never notices (I hope). Also, I use cacheDisplayInRect, not renderInContext. But it may be that there are reasons why you don't have that option... Hope this helps some - m. Thanks for this useful tip, but I hope I don't have to resort to your method. It just feels... dirty, you know? I'm not using -cacheDisplayInRect: because it doesn't exist in UIView, as far as I know. I also tried calling -drawRect: on my hidden view (after setting the context with UIGraphicsBeginImageContext()), but it doesn't seem to do anything. -Michael___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: NSArrayControllers not repopulating after NSPersistentDocument load
On Jan 13, 2010, at 13:28, Daniel Wambold wrote:
I have an NSPersistentDocument app using CoreData for storage. I have three
NSArrayControllers to mediate between the three Entities in my Model and
three NSTableViews. Everything works fine until I load a previously saved
file. At that point, the controllers seem to have no content despite the fact
that the tables are properly populated. That is, the NSTableView shows data,
but po [self arrangedObjects] in GDB shows an empty array.
At first I figured it was a timing issue, so I delayed the attempt to
manipulate an object (accessed by [[self arrangedObjects] objectAtIndex:0])
with a message delayed by up to several seconds with no improvement. If I
force a fetch, I can retrieve the data, but for some reason the controller is
not taking care of this on its own. I have verified that the controller
automatically prepares content, and it's not fetching lazily, per IB. I'm
sure I've missed something obvious, but I'm stuck. I'm not sure if it's
relevant, but the value of [self managedObjectContext] is different if I
check it in the NSPersistentDocument object immediately after -
(BOOL)configurePersistentStoreCoordinatorForURL:(NSURL *)url ofType:(NSString
*)fileType modelConfiguration:(NSString *)configuration
storeOptions:(NSDictionary *)storeOptions error:(NSError **)error versus
later, when my controller tries to manipulate its content. Although I
modified the document's load method to investigate this (just a call to super
followed by a break point), the same behavior exists even without overriding
this method. If the answer is in the Apple Docs, I've missed it because I've
read them several times now. Incidentally, the Cannot access contents of an
object controller after a nib is loaded section of Core Data Programming
Guide looked promising, and fetchWithRequest:merge:error returns YES, but it
still doesn't cause the controller to repopulate. I've got perhaps 50 pieces
of string data stored in this document, so it's not a volume of data issue, I
don't think.
Your problem description is too wide to suggest an particular cause, but there
are two *typical* causes of this sort of behavior:
1. You've created two objects where you only want one. For example, you've
created an object in code, but also instantiated one in a nib file.
2. You've tried to follow connections during the nib loading processes, when
some of them haven't been established yet.
Your problem sounds a bit like #1 -- if a NSTableView shows data, its
NSArrayController has data, so if the debugger shows no data, the object you're
looking at isn't the NSTableView's array controller. Also, the existence of two
NSManagedObjectContext objects points in the same direction.
The troublesome code, from my NSArrayController subclass, follows. The
object, myNote, is sent, after a brief delay, from the Nib file of another
object. I verified it contains a valid NSDate object.
- (void) myChangeStartTime:(NSNotification *)myNote
{
[self setFilterPredicate:nil];
[self rearrangeObjects];
[[[self arrangedObjects] objectAtIndex:0] setValue:[[myNote object]
dateValue] forKey:kMyDateBindingKey];
}
I happen to think that subclassing a NSController object is a terrible idea, if
it can be avoided. [Apologies in advance to those who've successfully and/or
necessarily subclassed NSController -- I've no doubt there are times when it's
a good idea, but I'm not going to let the facts stand in the way of an opinion.
;) ] NSController objects are glue objects, making any code you add to them
turn into glue code, when it should likely be either data model code or user
interface code.
One warning sign is the invocation of 'rearrangeObjects', which is in general a
very big hammer. One of the purposes of bindings [my opinion, again] is to
avoid the need to do anything to *all* objects whenever possible, since that
may be expensive.
That last line of code is a bit worrying, too. Why is it a NSArrayController's
responsibility to set up a data model's properties, and why isn't the
notification being sent to the data model instead?
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Re: NSDirectoryEnumerator and URLs (PS) [resolved]
Yeah that works, I had an assertion failing in there somewhere…
Now I have to go pester the sqlite-users list. Yick.
Jamie
On Jan 13, 2010, at 1:38 PM, Robert Martin wrote:
Assuming that the original path is valid, this looks ok to me - maybe you
might try commenting out the lines:
BOOL isDir = NO;
if ( [fm fileExistsAtPath:fullPath isDirectory:isDir] !isDir ) {
NSDictionary *metadataDict = [engine metadataDictionaryForFile:fullPath
];
[database indexMetadata:metadataDict forFileAtPath:fullPath];
}
and just have the app log the fullPath at that point - it should work.
Perhaps also checking the folderPath that's passed in to make sure it's a
directory?
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Re: Best practice example for a setup wizard?
Hi Ian, well, in a sense the lack of examples *is* illustrating the best practices concerning setup wizards :-) Cheers, Marcel On Jan 13, 2010, at 9:54 , Ian Piper wrote: For one of my applications I want to do a check at startup to see whether a profile and password has been set for the current user, and if not to take them through a setup wizard. I'm sure I can mug my way through writing this but it feels like the kind of thing for which there might be an example illustrating best practice. Can anyone point me at some documentation or examples that might help? ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post 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: Snapshotting hidden UIViews
On Jan 13, 2010, at 4:48 PM, Michael Gardner wrote: I also tried calling -drawRect: on my hidden view (after setting the context with UIGraphicsBeginImageContext()), but it doesn't seem to do anything. Many built in views do not draw anything at all (and have no useful drawRect:) - all of their rendering is handled by the view's layer. Glenn Andreas gandr...@gandreas.com The most merciful thing in the world ... is the inability of the human mind to correlate all its contents - HPL ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post 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: Best practice example for a setup wizard?
On Wed, Jan 13, 2010 at 9:54 AM, Ian Piper ianpi...@mac.com wrote: For one of my applications I want to do a check at startup to see whether a profile and password has been set for the current user, and if not to take them through a setup wizard. I'm sure I can mug my way through writing this but it feels like the kind of thing for which there might be an example illustrating best practice. Can anyone point me at some documentation or examples that might help? I can only think of a few Assistants (they are not called Wizards) in OS X: 1. Creating an iCal account. This one sticks out because it is so unnecessary and buggy that it makes me want to shoot my monitor every time it appears. 2. The Bluetooth mouse and keyboard detection ones. 3. The Certificate Signing Request generator in Keychain Access.app. 4. First-launch of Mail.app Think long and hard before you decide you want to replicate these user experiences. Particularly at the first launch. --Kyle Sluder ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: Displaying a non-contentual menu attachPopUpWithFrame
On Wed, Jan 13, 2010 at 11:59 AM, Peter Ammon pam...@apple.com wrote: Hi Eric, On SnowLeopard and later, use the NSMenu method popUpMenuPositioningItem: atLocation: inView:. Don't forget to file a documentation bug about mentioning this new method in the menu and popup list documentation. --Kyle Sluder ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: Best practice example for a setup wizard?
If you really want to do a wizard, this might be a good starting point: http://www.cimgf.com/2008/03/03/core-animation-tutorial-wizard-dialog-with-transitions/ Independent Cocoa Developer, Macatomy Software http://macatomy.com On 2010-01-13, at 4:11 PM, Kyle Sluder wrote: On Wed, Jan 13, 2010 at 9:54 AM, Ian Piper ianpi...@mac.com wrote: For one of my applications I want to do a check at startup to see whether a profile and password has been set for the current user, and if not to take them through a setup wizard. I'm sure I can mug my way through writing this but it feels like the kind of thing for which there might be an example illustrating best practice. Can anyone point me at some documentation or examples that might help? I can only think of a few Assistants (they are not called Wizards) in OS X: 1. Creating an iCal account. This one sticks out because it is so unnecessary and buggy that it makes me want to shoot my monitor every time it appears. 2. The Bluetooth mouse and keyboard detection ones. 3. The Certificate Signing Request generator in Keychain Access.app. 4. First-launch of Mail.app Think long and hard before you decide you want to replicate these user experiences. Particularly at the first launch. --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/pcwiz.support%40gmail.com This email sent to pcwiz.supp...@gmail.com ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: Trying to create an alias file by using the new NSURL methods available with Mac OS X 10.6 !
On 1/13/10 10:42 PM, rohan a said:
int CreateAlias(const char *target, const char *aliasname)
{
CFStringRef Ref1 = CFStringCreateWithCString(NULL, target,
kCFStringEncodingASCII);
Don't use kCFStringEncodingASCII, filenames can have non-ASCII characters.
Save yourself the trouble of all these conversions, and just use the
NDAlias classes/categories. See here:
http://github.com/nathanday/ndalias
It doesn't currently support bookmarks, but a patch would be welcome
(and pretty easy to add)!
Would it be possible to create an alias for a non-existent file ?
No. But if its parent folder exists, you could create an alias to the
parent folder and store the filename.
Lastly, please don't post the same message to two lists. Not everyone
is subscribed to both.
--
Sean McBride, B. Eng s...@rogue-research.com
Rogue Researchwww.rogue-research.com
Mac Software Developer Montréal, Québec, Canada
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set the label for the left hand expression / popup in an NSPredicateEditorRowTemplate?
I am looking for some input on how to set the label for the left hand
expression / popup in an NSPredicateEditorRowTemplate.
I need to programmatically create a NSPredicateEditorRowTemplate so I
can populate the right side expression / drop down with dynamically
generated values.
In my subclass, I populate the values like so:
---
-(id)initWithArray:(NSArray *)arr
{
NSString *keyPath = @professions;
NSMutableArray *expressions = [NSMutableArray arrayWithCapacity:[arr
count]];
for(NSString *s in arr)
{
[expressions addObject:[NSExpression
expressionForConstantValue:s]];
}
if(!(self = [super initWithLeftExpressions:[NSArray
arrayWithObjects:[NSExpression expressionForKeyPath:keyPath], nil]
rightExpressions:expressions
modifier:NSDirectPredicateModifier
operators:[NSArray arrayWithObjects:
[NSNumber numberWithInt:NSContainsPredicateOperatorType],nil]
options:NSCaseInsensitivePredicateOption
]))
{
return nil;
}
//...
}
---
I then add this to the NSPredicateEditor, and it works as expect.
However, the left column in the editor for this row shows
professions (the key value). I want it to show Profession. If I
was using IB this would be very simple, as I could just rename it in
the popup.
How can I set the label for the left hand name in the editor?
Do I have to completely override all of the
NSPredicateEditorRowTemplate methods and manage all of the popups /
controls myself? I only need to change the label. Ive been trying to
figure this out off ad on for the past week, and havent come up with
any solutions other than override all APIs.
mike
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Re: NSArrayControllers not repopulating after NSPersistentDocument load
Quincey- I have not created a controller in code, to my knowledge, so I don't know how I'd have two. (I had, previously, made this error by creating an instantiation of NSDocument in IB, but I realized the error in my ways and cleared that up, I believe, by resetting the File's Owner to the MyDocument subclass. which is not instantiated in IB). I can't see any evidence that I missed any part of fixing that. What I have done is dragged an NSArrayController into the nib file, assigned it to the MyVSController subclass, then wired it to the NSTextView. I used code to create the table columns and bindings. The NSArrayController behaves properly (able to show an array of arrangedObjects, make decisions based on these, etc.) prior to saving the file. I *HAD* tried creating and assigning an NSManagedObjectContext object in IB, but realized that was probably a mistake so I removed it and any reference in code to such a thing. The original code did not include the rearrangeObjects call. I put that in to be certain I wasn't missing something that would trigger a re-filtering, thus revealing contents that were otherwise filtered out. The last line of code is simply a way to set an NSDatePicker in the UI to the last clock time the user had chosen. I didn't bind the NSDatePicker because I wanted to be able to do a number of parameter checks on it before allowing its value to slip into the data store. Nevertheless, I agree that the situation seems to suggest that the File Open (load) method that is being invoked by the NSPersistentDocument is creating a new managed object context that is not being attached to the controller. Despite my efforts to force this issue (such as posting the new MOC in a notification object), it fails. I assume this is because I was using the NSPersistentDocument persistent store assignment method, which occurs before the Nib is reconstituted, meaning that the value is lost in the initialization. I don't know if this is a clue, but I have never been able to get this program to respond to the request for [[NSApp delegate] managedObjectContext]. I DO have a delegate to the Application, but I have not yet done anything with it. Could this be part of the problem? In any event, I appreciate any further insight you or anyone else might have. Thanks again. -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: set the label for the left hand expression / popup in an NSPredicateEditorRowTemplate?
On Jan 13, 2010, at 3:46 PM, Mike Chambers wrote: [...] I then add this to the NSPredicateEditor, and it works as expect. However, the left column in the editor for this row shows professions (the key value). I want it to show Profession. If I was using IB this would be very simple, as I could just rename it in the popup. How can I set the label for the left hand name in the editor? You can simply change the title of the menu item in the NSPopUpButton. You can access the first popup button with [[template templateViews] objectAtIndex:0]. -Peter ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: Problem printing offscreen PDFViews
Why are you using a different pattern for printing your PDF view than
you are using for your regular view? Use NSPrintOpertaion and
-setShowPanels: as described in
http://developer.apple.com/mac/library/documentation/cocoa/Conceptual/Printing/Tasks/UsingPrintPanel.html
--Kyle Sluder
On Wed, Jan 13, 2010 at 8:35 AM, Waldo Lee Sharvey
waldoleeshar...@gmail.com wrote:
I have a situation where I want to print a multi-page PDF. While I
could use the PDFKit utility classes and/or quartz functions to get
the information to manually write drawing/pagination code for a NSView
subclass, I had thought that quicker alternative would be to create an
off-screen PDFView and tell it to print itself. When I tried this
solution, the print dialog didn't go away, all of the print settings
controls on the right half of the print dialog disappeared, and the
application froze.
I then wrote a tiny test application with the following method that
illustrates the problem. When the test program is compiled without the
USE_PDF_VIEW preprocessor macro defined, the blank view displays fine.
If USE_PDF_VIEW is defined, the document doesn't print, most of the
print dialog controls disappear, and the app freezes. While I have
other ways of accomplishing my goal, I'm curious as to why this
shortcut doesn't work. Is there something about Cocoa drawing I still
don't understand? Am I banging into Apple Voodoo Magic(tm) behind the
scenes that makes PDFView behave in a completely different way than
other NSViews?
- (void)printMyStuff:(id)sender {
NSPrintInfo *currInfo = [NSPrintInfo sharedPrintInfo];
#ifdef USE_PDF_VIEW
PDFView *pdfView = [[PDFView alloc] init];
PDFDocument *pdfDoc = [[PDFDocument alloc] initWithURL:[NSURL
fileURLWithPath:@/Users/wls/Documents/my_document.pdf]];
[pdfView setDocument: pdfDoc];
[pdfView printWithInfo:currInfo autoRotate:YES];
#else
NSView *myView = [[NSView alloc] initWithFrame:NSMakeRect(0, 0, 500,
500)];
NSPrintOperation *myop = [NSPrintOperation
printOperationWithView:myView printInfo:currInfo];
[myop runOperation];
#endif
}
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Re: Managed Object with Getter
On Jan 13, 2010, at 7:14 AM, Jim Correia wrote:
This style is typically used for non-object BOOL values. If you use
it for an NSNumber attribute, you run the risk of someone familiar
with the pattern assuming it is a BOOL property and writing
if ([managedObject isSelected]) {
}
which will of course be be true whenever the property is non-nil, no
regardless of the actual value.
Thanks for the reply and the information. The attribute is a bool in
the Xcode data modeler. When you copy the Obj-C 2.0 method
declarations for the bool attribute to the clipboard this is what you
get.
@property (nonatomic, retain) NSNumber *selected;
So I assume that Core Data frameworks default is to use a NSNumber for
a bool value.
--Richard
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Re: Managed Object with Getter
On Jan 13, 2010, at 7:29 PM, Richard Somers wrote:
On Jan 13, 2010, at 7:14 AM, Jim Correia wrote:
This style is typically used for non-object BOOL values. If you use it for
an NSNumber attribute, you run the risk of someone familiar with the pattern
assuming it is a BOOL property and writing
if ([managedObject isSelected]) {
}
which will of course be be true whenever the property is non-nil, no
regardless of the actual value.
Thanks for the reply and the information. The attribute is a bool in the
Xcode data modeler. When you copy the Obj-C 2.0 method declarations for the
bool attribute to the clipboard this is what you get.
@property (nonatomic, retain) NSNumber *selected;
So I assume that Core Data frameworks default is to use a NSNumber for a bool
value.
That is correct. Core Data always expresses its attribute as object values.
If you want to have a scalar BOOL property on your object, you can, but you
must write your own accessors. (And be aware of and deal with
-setNilValueForKey: as appropriate.)
For example:
- (BOOL)isSelected
{
NSNumber *selected = nil;
[self willAccessValueForKey: @selected];
selected = [self primitiveSelected];
[self didAccessValueForKey: @selected];
return (selected != nil) ? [selected boolValue] : NO;
}
- (void)setSelected:(BOOL)selected
{
[self willChangeValueForKey: @selected];
[self setPrimitiveSelected: [NSNumber numberWithBool: selected]];
[self didChangeValueForKey: @selected];
}
- Jim
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Analyzer in error?
Hi all, I have the following code in a category on NSData:
@implementation NSData (SHA1Hash)
- (NSData*) sha1Hash
{
// calculates the 160 bit SHA-1 digest of the given data
unsigned char* digest = (unsigned char*) malloc(20);
SHA1([self bytes], [self length], digest);
return [[self class] dataWithBytesNoCopy:digest length:20];
}
@end
The static analyzer reports this:
Potential leak of an object allocated on line 622
Method returns an Objective-C object with a +1 retain count
(owning reference)
Object returned to caller as an owning reference (single retain
count transferred to caller)
Object allocated on line 622 is returned from a method whose
name ('sha1Hash') does not contain 'copy' or otherwise starts with 'new' or
'alloc'. This violatesthe naming convention rules given in the
Memory Management Guide for Cocoa (object leaked)
But I think this is wrong - [NSData dataWithBytesNoCopy] returns an object I
don't own, and it in turn takes ownership of digest. So where's the leak? Is
clang simply mistaking the fact that +dataWithBytesNoCopy CONTAINS 'copy' and
not STARTS WITH copy?
--Graham
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Re: Analyzer in error?
Possibly - do you want to try the XCode list for that one, I've been
asking CLANG questions over there.
Graham Cox wrote:
Hi all, I have the following code in a category on NSData:
@implementation NSData (SHA1Hash)
- (NSData*) sha1Hash
{
// calculates the 160 bit SHA-1 digest of the given data
unsigned char* digest = (unsigned char*) malloc(20);
SHA1([self bytes], [self length], digest);
return [[self class] dataWithBytesNoCopy:digest length:20];
}
@end
The static analyzer reports this:
Potential leak of an object allocated on line 622
Method returns an Objective-C object with a +1 retain count
(owning reference)
Object returned to caller as an owning reference (single retain
count transferred to caller)
Object allocated on line 622 is returned from a method whose
name ('sha1Hash') does not contain 'copy' or otherwise starts with 'new' or
'alloc'. This violatesthe naming convention rules given in the
Memory Management Guide for Cocoa (object leaked)
But I think this is wrong - [NSData dataWithBytesNoCopy] returns an object I don't
own, and it in turn takes ownership of digest. So where's the leak? Is clang
simply mistaking the fact that +dataWithBytesNoCopy CONTAINS 'copy' and not STARTS
WITH copy?
--Graham
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Re: Analyzer in error?
On Jan 13, 2010, at 5:54 PM, Graham Cox wrote:
@implementation NSData (SHA1Hash)
- (NSData*) sha1Hash
{
// calculates the 160 bit SHA-1 digest of the given data
unsigned char* digest = (unsigned char*) malloc(20);
SHA1([self bytes], [self length], digest);
return [[self class] dataWithBytesNoCopy:digest length:20];
}
@end
The static analyzer reports this:
Potential leak of an object allocated on line 622
Method returns an Objective-C object with a +1 retain count
(owning reference)
Object returned to caller as an owning reference (single retain
count transferred to caller)
Object allocated on line 622 is returned from a method whose
name ('sha1Hash') does not contain 'copy' or otherwise starts with 'new' or
'alloc'. This violatesthe naming convention rules given in
the Memory Management Guide for Cocoa (object leaked)
But I think this is wrong - [NSData dataWithBytesNoCopy] returns an object I
don't own, and it in turn takes ownership of digest. So where's the leak?
Is clang simply mistaking the fact that +dataWithBytesNoCopy CONTAINS 'copy'
and not STARTS WITH copy?
Yes, the static analyzer is wrong here.
The Official Rule is '... contains copy ...'. This is a case where a
mechanical interpretation of the Official Rule isn't quite right.
The static analyzer does have a special case for +[NSData
dataWithBytesNoCopy:length:].
http://lists.cs.uiuc.edu/pipermail/cfe-commits/Week-of-Mon-20090511/017258.html
But your code sends the message to [self class] instead of NSData, so perhaps
the special case is not recognized. Alternatively, perhaps your Xcode isn't the
newest available.
Try this to suppress the complaint:
return [(NSData *)[self class] dataWithBytesNoCopy:digest length:20];
--
Greg Parker gpar...@apple.com Runtime Wrangler
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How to enable/disable a UITextField or UITextView programmatically?
I have a UITableView that's part of a Navigation-based Application.
There's one .xib, a DrinkDetailViewController class (.m .h files)
and an AddDrinkViewController class which inherits from
DrinkDetailViewController. Both share the same view, which contains a
UITextField, two UITextViews, and some UILabels. The
DrinkDetailViewController.h declares three IBOutlets as follows:
#import UIKit/UIKit.h
@interface DrinkDetailViewController : UIViewController
{
IBOutlet UITextField *nameField;
IBOutlet UITextView *ingredientsView;
IBOutlet UITextView *directionsView;
...
}
@end
so that I can access the UITextField, and the two UITextViews. IB
shows in the inspector window, that the UITextField, and UITextViews
have a BOOL enabled property (controlled by a checkbox labeled
Enabled). But the following doesn't work:
...
nameField.enabled = YES;
ingredientsView.enabled = YES;
directionsView.enabled = YES;
...
in the viewDidLoad: method of AddDrinkViewController. I unchecked the
enabled box for these controls as the normal use of the view is just
to display drink information, not for data entry. The
AddDrinkViewController re-uses the view for data entry, and I want to
re-enable the fields, but only when the view (xib) is used/loaded by
the AddDrinkViewController. I looked in the docs for UITextField, but
didn't even see a reference to an enabled property. Is this another
of those view-within-a-view problems?
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Re: How to enable/disable a UITextField or UITextView programmatically?
On Jan 13, 2010, at 6:22 PM, William Squires wrote:
I have a UITableView that's part of a Navigation-based Application. There's
one .xib, a DrinkDetailViewController class (.m .h files) and an
AddDrinkViewController class which inherits from DrinkDetailViewController.
Both share the same view, which contains a UITextField, two UITextViews, and
some UILabels. The DrinkDetailViewController.h declares three IBOutlets as
follows:
#import UIKit/UIKit.h
@interface DrinkDetailViewController : UIViewController
{
IBOutlet UITextField *nameField;
IBOutlet UITextView *ingredientsView;
IBOutlet UITextView *directionsView;
...
}
@end
so that I can access the UITextField, and the two UITextViews. IB shows in
the inspector window, that the UITextField, and UITextViews have a BOOL
enabled property (controlled by a checkbox labeled Enabled). But the
following doesn't work:
...
nameField.enabled = YES;
ingredientsView.enabled = YES;
directionsView.enabled = YES;
...
in the viewDidLoad: method of AddDrinkViewController. I unchecked the enabled
box for these controls as the normal use of the view is just to display drink
information, not for data entry. The AddDrinkViewController re-uses the view
for data entry, and I want to re-enable the fields, but only when the view
(xib) is used/loaded by the AddDrinkViewController. I looked in the docs for
UITextField, but didn't even see a reference to an enabled property. Is this
another of those view-within-a-view problems?
Theenabledproperty is defined in UIControl --- the super-class of
UITextField . . .
This is a good time for a plug for Xcode's incredibly useful but oft skipped
over Class Browser,
the second item in Xcode's Project menu . . .
Cheers,
. . . . . . . .Henry
=
iPhone App Development and Developer Education . . .
Visit www.nonatomic-retain.com
Mac OSX Application Development, Plus a Great Deal More . . .
Visit www.trilithon.com
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Re: Snapshotting hidden UIViews
On Jan 13, 2010, at 5:07 PM, glenn andreas wrote: On Jan 13, 2010, at 4:48 PM, Michael Gardner wrote: I also tried calling -drawRect: on my hidden view (after setting the context with UIGraphicsBeginImageContext()), but it doesn't seem to do anything. Many built in views do not draw anything at all (and have no useful drawRect:) - all of their rendering is handled by the view's layer. Ah, that explains that. But I'd still very much like to know why the layer's -renderInContext: doesn't work consistently when the view is hidden. -Michael___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: Trying to create an alias file by using the new NSURL methods available with Mac OS X 10.6 !
Hi,
Thanks for the response.
I used kCFStringEncodingASCII, since I am passing a char* strings for the
filename and alias name through my program.
Thanks
On Thu, Jan 14, 2010 at 4:49 AM, Sean McBride s...@rogue-research.comwrote:
On 1/13/10 10:42 PM, rohan a said:
int CreateAlias(const char *target, const char *aliasname)
{
CFStringRef Ref1 = CFStringCreateWithCString(NULL, target,
kCFStringEncodingASCII);
Don't use kCFStringEncodingASCII, filenames can have non-ASCII characters.
Save yourself the trouble of all these conversions, and just use the
NDAlias classes/categories. See here:
http://github.com/nathanday/ndalias
It doesn't currently support bookmarks, but a patch would be welcome
(and pretty easy to add)!
Would it be possible to create an alias for a non-existent file ?
No. But if its parent folder exists, you could create an alias to the
parent folder and store the filename.
Lastly, please don't post the same message to two lists. Not everyone
is subscribed to both.
--
Sean McBride, B. Eng s...@rogue-research.com
Rogue Researchwww.rogue-research.com
Mac Software Developer Montréal, Québec, Canada
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Framework soft link (optional install)
I have an app that I'd like to use a Cocoa Framework in (and it'd normally end up in my app package in the Frameworks folder). For licensing reasons, I can't embed it directly, and my all will work without it (though some features will be disabled). I'd like to allow users to download this framework elsewhere, then drag it to my app's dock icon... It will copy it to where it needs to be in the app package, then quit and the user can relaunch. How can I compile/link my code so that the framework effectively has a soft link? I will need to check for the presence of the framework at runtime, and if it is not there, avoid calling into it, but if the user has added it, the functionality would be available. Can I just build it, then toss out the framework in the release version and make sure to check before calling code the uses it? Examples? Thanks, Trygve ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post 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: Trying to create an alias file by using the new NSURL methods available with Mac OS X 10.6 !
On Wed, Jan 13, 2010 at 8:16 PM, rohan a info1...@gmail.com wrote: I used kCFStringEncodingASCII, since I am passing a char* strings for the filename and alias name through my program. char* does not mean array of ASCII characters. --Kyle Sluder ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: Framework soft link (optional install)
I have an app that I'd like to use a Cocoa Framework in (and it'd normally end up in my app package in the Frameworks folder). For licensing reasons, I can't embed it directly, and my all will work without it (though some features will be disabled). I'd like to allow users to download this framework elsewhere, then drag it to my app's dock icon... It will copy it to where it needs to be in the app package, then quit and the user can relaunch. How can I compile/link my code so that the framework effectively has a soft link? I will need to check for the presence of the framework at runtime, and if it is not there, avoid calling into it, but if the user has added it, the functionality would be available. Err make that weak link... Not thinking in English right now! ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post 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: Framework soft link (optional install)
2010/1/13 Trygve Inda cocoa...@xericdesign.com: How can I compile/link my code so that the framework effectively has a soft link? I will need to check for the presence of the framework at runtime, and if it is not there, avoid calling into it, but if the user has added it, the functionality would be available. Weak link the framework, according to the details here: http://developer.apple.com/mac/library/DOCUMENTATION/MacOSX/Conceptual/BPFrameworks/Concepts/WeakLinking.html Note that there is no direct ObjC analogue for the NULLing function symbol behavior (at least not yet; see http://sealiesoftware.com/blog/archive/2009/09/09/objc_explain_Weak-import_classes.html for a glimpse into the future). At the moment, you can use NSClassNamed to get at the classes you need, then shove them off into a variable and check for non-Nilness. --Kyle Sluder ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: Trying to create an alias file by using the new NSURL methods available with Mac OS X 10.6 !
Should I then use kCFStringEncodingUTF8 in this case ? On Thu, Jan 14, 2010 at 9:52 AM, Kyle Sluder kyle.slu...@gmail.com wrote: On Wed, Jan 13, 2010 at 8:16 PM, rohan a info1...@gmail.com wrote: I used kCFStringEncodingASCII, since I am passing a char* strings for the filename and alias name through my program. char* does not mean array of ASCII characters. --Kyle Sluder ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: Snapshotting hidden UIViews
On Jan 13, 2010, at 9:46 PM, Michael Gardner gardne...@gmail.com wrote: On Jan 13, 2010, at 5:07 PM, glenn andreas wrote: On Jan 13, 2010, at 4:48 PM, Michael Gardner wrote: I also tried calling -drawRect: on my hidden view (after setting the context with UIGraphicsBeginImageContext()), but it doesn't seem to do anything. Many built in views do not draw anything at all (and have no useful drawRect:) - all of their rendering is handled by the view's layer. Ah, that explains that. But I'd still very much like to know why the layer's -renderInContext: doesn't work consistently when the view is hidden. Pure speculation, but a hidden view may not have a layer associated with it, and things like subview layout aren't done for hidden views (why waste cycle laying out the subviews if nobody will see it?). There are probably other undocumented optimizations as well on hidden views, such as animations not running, pending refreshes postponed, etc... UIWebView is going to be especially problematic, since it does a whole lot of things in the background (such as loading needed images and other resources) ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post 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
