Re: Editing NSOutlineView Group Item
On Nov 4, 2014, at 14:39 , Luther Baker lutherba...@gmail.com wrote: I've created a project on github that essentially duplicates the problem I'm having. $ git clone https://github.com/EffectiveProgramming/LBOutlineViewDemo.git https://github.com/EffectiveProgramming/LBOutlineViewDemo.git I don’t see anything in it that should prevent the reload from working, so I don’t know what else to suggest except submit this project as a bug report. OTOH, based on the direction that you seem to be heading, I’d suggest you might do better to use bindings (from your table cell view subviews to the table cell view’s objectValue property, which would be set to the custom list item) and KVC to get the outline view to update, rather than using reload. That approach doesn’t answer the issue you’ve run into, but it might make it moot. ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: https://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: dispatch_source does not work
On 5 Nov 2014, at 14:08, Peter magn...@web.de wrote:
http://stackoverflow.com/questions/12343833/cocoa-monitor-a-file-for-modifications/26304208#26304208
has some info on this.
Thanks a lot. Got it working now.
Mit freundlichen Grüßen
Gerriet.
___ Peter Hartmann
mailto:hphartm...@justmail.de
Am 05.11.2014 um 07:50 schrieb Gerriet M. Denkmann gerr...@mdenkmann.de:
I want to monitor a file for changed content.
Polling is generally not a good idea, so I tried dispatch_source.
But it does not work.
Here the code:
static NSString *const kTestPath = @/tmp/a.test;
- (void)applicationDidFinishLaunching:(NSNotification *)aNotification
{
const char *filename = kTestPath.fileSystemRepresentation;
int fd = open(filename, O_RDONLY);
fcntl(fd, F_SETFL, O_NONBLOCK);
uintptr_t fD = (uintptr_t)fd;
dispatch_queue_t queue =
dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0);
const uint64_t flags = DISPATCH_VNODE_WRITE | DISPATCH_VNODE_LINK;
dispatch_source_t my_source =
dispatch_source_create(DISPATCH_SOURCE_TYPE_VNODE, fD, flags, queue);
dispatch_source_set_event_handler(my_source, ^{ [self fileDidChange]; }
);
dispatch_resume(my_source);
}
- (void)fileDidChange
{
NSLog(@%s,__FUNCTION__); // never seen
}
- (IBAction)buttonClicked: sender
{
static NSUInteger seqq = 0;
seqq++;
const char *stats_temp_file = /tmp/a.temp;
FILE *fp = fopen(stats_temp_file, w);
fprintf(fp, %lu\n, seqq);
(void)fclose(fp);
const char *filename = kTestPath.fileSystemRepresentation;
int a = rename(stats_temp_file, filename);
}
What am I doing wrong? (Writing directly to kTestPath without rename() also
does not work).
Gerriet.
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Re: Editing NSOutlineView Group Item
Thanks and thanks. I'll follow up on both your suggestions. Again, many thanks for your time Quincey! Luther On Nov 5, 2014, at 2:03 AM, Quincey Morris quinceymor...@rivergatesoftware.com wrote: On Nov 4, 2014, at 14:39 , Luther Baker lutherba...@gmail.com wrote: I've created a project on github that essentially duplicates the problem I'm having. $ git clone https://github.com/EffectiveProgramming/LBOutlineViewDemo.git I don’t see anything in it that should prevent the reload from working, so I don’t know what else to suggest except submit this project as a bug report. OTOH, based on the direction that you seem to be heading, I’d suggest you might do better to use bindings (from your table cell view subviews to the table cell view’s objectValue property, which would be set to the custom list item) and KVC to get the outline view to update, rather than using reload. That approach doesn’t answer the issue you’ve run into, but it might make it moot. ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: https://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Initializing Structures
A fast and compact way to initialize a structure is to enclose the values in a
pair of braces like this.
NSRect rect = {{0,0},{80,20}};
NSView *view = [[NSView alloc] initWithFrame:rect];
However a compiler error occurs if we try to initialize a struct with braces
directly within an Objective-C message.
NSView *view = [[NSView alloc] initWithFrame:{{0,0},{80,20}}];
Why does the compiler accept the first but not the second?
Richard Charles
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Re: Initializing Structures
On Nov 5, 2014, at 2:03 PM, Richard Charles rcharles...@gmail.com wrote:
A fast and compact way to initialize a structure is to enclose the values in
a pair of braces like this.
NSRect rect = {{0,0},{80,20}};
NSView *view = [[NSView alloc] initWithFrame:rect];
However a compiler error occurs if we try to initialize a struct with braces
directly within an Objective-C message.
NSView *view = [[NSView alloc] initWithFrame:{{0,0},{80,20}}];
Why does the compiler accept the first but not the second?
The C language allows a struct variable to be initialized in its declaration
using the brace syntax, but does not allow that form to be used anywhere else.
C99 adds this syntax (compound literal) that works anywhere:
NSView *view = [[NSView alloc] initWithFrame:(NSRect){{0,0},{80,20}}];
--
Greg Parker gpar...@apple.com Runtime Wrangler
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Re: Initializing Structures
On Wed, Nov 5, 2014, at 04:11 PM, Greg Parker wrote:
The C language allows a struct variable to be initialized in its
declaration using the brace syntax, but does not allow that form to be
used anywhere else.
C99 adds this syntax (compound literal) that works anywhere:
NSView *view = [[NSView alloc]
initWithFrame:(NSRect){{0,0},{80,20}}];
The compound literal syntax is also a lot more flexible: it can
initialize members by name; they can be initialized out of order;
members in nested structs can be initialized directly; and all members
that are not initialized explicitly are initialized to zero.
What I'm saying is, it's really handy and you should look it up.
--Kyle Sluder
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Re: NSImage glowing
Yeah, I need to look at that original message. I’ve been doing iOS stuff for years and so OS X stuff is a bit foreign to me. I only hit the OS X stuff intermittently - i.e. when my team needs some specific UI stuff which is ironic in a way. We’re all iOS developers learning OS X. So, can you help me understand what the below code does? So I have this class: @interface MiniTabBarButton : NSButton @property(strong) NSTabViewItem *tabViewItem; @end and we create the button: NSImage* iconImage = [(id MiniTabBarItem)tabViewItem.identifier icon]; [iconImage setTemplate:YES]; newButton.image = iconImage; So with that in mind, remember I don’t even really know what NSButton provides (again, I understand UIButtons really well - and I do have some understanding of NSButton custom drawing to some degree as I did write a subclass for the checkbox style: @interface CalendarFilterCheckbox : NSButtonCell BUT, in this case I’m just trying to get the glow on selected images, so when I look at the code below all I see is that we’re getting the bitmap and drawing it. I’m not understanding how that gets a glow. Sorry for being dense, but I do learn quickly. I just am like a blind man at first. On Nov 4, 2014, at 12:48 PM, Lee Ann Rucker lruc...@vmware.com wrote: If you want the same blue highlight that NSButton applies to template images, you can get the NSButtonCell to draw it into a graphics context and get an image that way - I answered this when you asked about buttons specifically back in June. (My bug requesting an NSImage method to do that is still open and presumably unloved) Once you've got your buttonCell configured, do this: NSRect bounds = NSZeroRect; bounds.size = [template size]; NSBitmapImageRep *bmpImageRep = [NSBitmapImageRep imageRepWithSize:bounds.size scale:scale]; // Utility wrapper around imageRepWith32bitBuffer [NSGraphicsContext saveGraphicsState]; NSGraphicsContext *bitmapContext = [NSGraphicsContext graphicsContextWithBitmapImageRep:bmpImageRep]; [NSGraphicsContext setCurrentContext:bitmapContext]; [buttonCell drawImage:template withFrame:bounds inView:nil]; [NSGraphicsContext restoreGraphicsState]; return bmpImageRep; On Nov 4, 2014, at 10:41 AM, Alex Kac a...@webis.net wrote: I have an NSImage that looks like in a mini-toolbar - kind of like Xcode. Now of course I can just create a hand-drawn selected version, but I like doing things like that in code. So I’d like to have code that takes the NSImage and makes it glow like Xcode here: https://urldefense.proofpoint.com/v2/url?u=https-3A__www.dropbox.com_s_by642iw7xosnki7_Screenshot-25202014-2D11-2D04-252011.40.18.png-3Fdl-3D0d=AAIGaQc=Sqcl0Ez6M0X8aeM67LKIiDJAXVeAw-YihVMNtXt-uEsr=ie7S-J__EKnfyVOBV7-jV2rZ--p47O6vkyTklpDM3h4m=lUNK2PEwQXtoqjBGMWU6Y3iSwSvLFO0mx-2wI6kiSNgs=PSrnj94BQRWKM8dFv5gi7Tz3a3NH1_5gmiUvJHsFfP4e= I’ve Googled this and I see a bunch of stuff, that I can’t get working at all. Most articles were for iOS and some repsonders even said “if I was using an NSImage, this would be easy - but for iOS you do…”. So… can anyone point me to the right place? ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: https://urldefense.proofpoint.com/v2/url?u=https-3A__lists.apple.com_mailman_options_cocoa-2Ddev_lrucker-2540vmware.comd=AAIGaQc=Sqcl0Ez6M0X8aeM67LKIiDJAXVeAw-YihVMNtXt-uEsr=ie7S-J__EKnfyVOBV7-jV2rZ--p47O6vkyTklpDM3h4m=lUNK2PEwQXtoqjBGMWU6Y3iSwSvLFO0mx-2wI6kiSNgs=QsN7f2Wy2w3J4nIWtViq9WfFRo-Fwf46hQqveR8coB0e= This email sent to lruc...@vmware.com Alex Kac - President and Founder Web Information Solutions, Inc. To educate a person in mind and not in morals is to educate a menace to society. -- Theodore Roosevelt ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: https://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
auto layout exception: Unable to create description in descriptionForLayoutAttribute_layoutItem_coefficient. Something is nil
About a week ago, I turned on Auto Layout for xib file that contains a view. I added constraints and my subviews (some images and a label) were positioned exactly as I wanted. I thought that auto layout was great. Today, I discovered that the app crashes on iOS 7.1 using the simulator for an iPhone 5s. Console output is below. I'm using Xcode 6.1. Everything works fine on iOS 8.1. Xcode shows no warnings or errors for the constraints. I found two similar questions on Stack Overflow, but they didn't help me. http://stackoverflow.com/questions/26024906/unable-to-create-description-in -descriptionforlayoutattribute-layoutitem-coeffi http://stackoverflow.com/questions/14042016/ios-6-auto-layout-constraints-e rror-something-is-nil Does anyone have thoughts how to solve this? If I can't find a solution, I may need to turn off auto layout and revert to using autoresizing. Console output: 2014-11-05 11:26:32.602 SSP[20856:60b] *** Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: 'Unable to create description in descriptionForLayoutAttribute_layoutItem_coefficient. Something is nil' *** First throw call stack: ( 0 CoreFoundation 0x00011019c495 __exceptionPreprocess + 165 1 libobjc.A.dylib 0x00010fa6599e objc_exception_throw + 43 2 CoreFoundation 0x00011019c2ad +[NSException raise:format:] + 205 3 Foundation 0x00010f432548 descriptionForLayoutAttribute_layoutItem_coefficient + 145 4 Foundation 0x00010f4323bc -[NSLayoutConstraint equationDescription] + 216 5 Foundation 0x00010f432831 -[NSLayoutConstraint description] + 297 6 CoreFoundation 0x00011015d1b9 -[NSArray descriptionWithLocale:indent:] + 345 7 Foundation 0x00010f2c414e _NSDescriptionWithLocaleFunc + 64 8 CoreFoundation 0x000110121244 __CFStringAppendFormatCore + 7252 9 CoreFoundation 0x00011015f913 _CFStringCreateWithFormatAndArgumentsAux + 115 10 CoreFoundation 0x0001101bfa5b _CFLogvEx + 123 11 Foundation 0x00010f2f4276 NSLogv + 79 12 Foundation 0x00010f2f420a NSLog + 148 13 UIKit 0x00010e86a097 -[UIView(UIConstraintBasedLayout_EngineDelegate) engine:willBreakConstraint:dueToMutuallyExclusiveConstraints:] + 62 14 Foundation 0x00010f4292ac -[NSISEngine handleUnsatisfiableRowWithHead:body:usingInfeasibilityHandlingBehavior:mutu allyExclusiveConstraints:] + 521 15 Foundation 0x00010f42a9b1 -[NSISEngine tryUsingArtificialVariableToAddConstraintWithMarker:rowBody:usingInfeasibil ityHandlingBehavior:mutuallyExclusiveConstraints:] + 353 16 Foundation 0x00010f2e226b -[NSISEngine tryToAddConstraintWithMarker:expression:integralizationAdjustment:mutuallyE xclusiveConstraints:] + 663 17 Foundation 0x00010f433180 -[NSLayoutConstraint _addLoweredExpression:toEngine:integralizationAdjustment:lastLoweredConstan tWasRounded:mutuallyExclusiveConstraints:] + 275 18 Foundation 0x00010f2de1b0 -[NSLayoutConstraint _addToEngine:integralizationAdjustment:mutuallyExclusiveConstraints:] + 204 19 UIKit 0x00010e85d591 -[UIView(UIConstraintBasedLayout) _layoutEngine_didAddLayoutConstraint:roundingAdjustment:mutuallyExclusiveCo nstraints:] + 362 20 UIKit 0x00010e85d738 -[UIView(UIConstraintBasedLayout) _tryToAddConstraintWithoutUpdatingConstraintsArray:roundingAdjustment:mutua llyExclusiveConstraints:] + 30 21 UIKit 0x00010e85d858 -[UIView(UIConstraintBasedLayout) _tryToAddConstraint:roundingAdjustment:mutuallyExclusiveConstraints:] + 232 22 UIKit 0x00010e85db63 __50-[UIView(UIConstraintBasedLayout) addConstraints:]_block_invoke + 153 23 Foundation 0x00010f42b29a -[NSISEngine withBehaviors:performModifications:] + 119 24 UIKit 0x00010e85dabb -[UIView(UIConstraintBasedLayout) addConstraints:] + 263 25 UIKit 0x00010e4e5078 -[UIButton updateConstraints] + 2816 26 UIKit 0x00010e867539 -[UIView(AdditionalLayoutSupport) _internalUpdateConstraintsIfNeededAccumulatingViewsNeedingSecondPass:] + 223 27 UIKit 0x00010e86768a -[UIView(AdditionalLayoutSupport)
Re: NSImage glowing
On Nov 5, 2014, at 3:43 PM, Alex Kac a...@webis.net wrote: BUT, in this case I’m just trying to get the glow on selected images, so when I look at the code below all I see is that we’re getting the bitmap and drawing it. I’m not understanding how that gets a glow. It’s applied by NSButtonCell, which knows that if it’s in the selected state and its image is marked as a template image (or some set of conditions like that), then it should apply the glow when drawing. I take it you’re trying to get this effect in some place other than inside a button? It’s not unreasonable to use an NSCell instance elsewhere— that’s essentially what cells are for, to abstract away some of the drawing behavior from the control view that uses them. I think NSButtonCell uses NSSetFocusRingStyle() to provide the actual effect, but there may be additional magic in there. ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: https://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: NSImage glowing
On Nov 5, 2014, at 5:53 PM, Wim Lewis w...@omnigroup.com wrote: On Nov 5, 2014, at 3:43 PM, Alex Kac a...@webis.net wrote: BUT, in this case I’m just trying to get the glow on selected images, so when I look at the code below all I see is that we’re getting the bitmap and drawing it. I’m not understanding how that gets a glow. It’s applied by NSButtonCell, which knows that if it’s in the selected state and its image is marked as a template image (or some set of conditions like that), then it should apply the glow when drawing. I take it you’re trying to get this effect in some place other than inside a button? It’s not unreasonable to use an NSCell instance elsewhere— that’s essentially what cells are for, to abstract away some of the drawing behavior from the control view that uses them. I think NSButtonCell uses NSSetFocusRingStyle() to provide the actual effect, but there may be additional magic in there. If it's the blue that toolbar buttons apply to template images, it's not using that - I don't know what it is, but they were only fuzzy in the first OS that used them, and even then they used something else. There's also an etched effect it gets, depending on which OS you're in. I sent Alex a sample app that puts everything together. But yes, for fuzzy blue around an icon, all you have to do is call NSSetFocusRingStyle before drawing it. This doesn't change the icon colors, though. ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: https://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
