Re: NSOpenPanel Exception/Bug
On Jul 28, 2009, at 9:56 PM, Andy Lee wrote:
On Jul 28, 2009, at 7:54 PM, Seth Willits wrote:
It works its way down to the last if statement which launches /usr/
bin/file to figure out the type of the file. It's all straight
forward simple code, which simply returns YES or NO, but it's
causing an exception apparently, and I don't see how I could do
anything different.
Offhand it all looks pretty innocuous to me, but regarding that last
part -- is fileTypeForFileAtPath: a category method you added? If
so, can you show the code?
Yes. It just fires off a task.
- (NSString *)fileTypeForFileAtPath:(NSString *)filePath;
{
NSPipe * pipe = [[NSPipe alloc] init];
NSTask * task = [[NSTask alloc] init];
NSString * result;
NSData * data;
[task setLaunchPath:@/usr/bin/file];
[task setArguments:[NSArray arrayWithObjects:@-b, filePath, nil]];
[task setStandardOutput:pipe];
[task launch];
[task waitUntilExit];
if ([task terminationStatus] != 0) {
result = nil;
goto bail;
}
data = [[pipe fileHandleForReading] availableData];
if (data == nil) {
result = nil;
goto bail;
}
result = [[[NSString alloc] initWithData:data
encoding:NSUTF8StringEncoding] autorelease];
bail:
[pipe release];
[task release];
return result;
}
I'd file a bug report on the exception being thrown, but heck if I can
reproduce it.
--
Seth Willits
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Re: NSOpenPanel Exception/Bug
On Jul 29, 2009, at 2:12 AM, Seth Willits wrote: Yes. It just fires off a task. [...] I'd file a bug report on the exception being thrown, but heck if I can reproduce it. From your stack trace, it looks like the save panel is trying to display more rows than a particular column actually has -- i.e., somebody is wrong about how many files are in some directory. Are you doing anything that adds and removes a lot of files in the directory you navigate to? If there is an NSOpenPanel bug, could it be surfacing because your call to /usr/bin/file is slowing the panel's display down enough for the file-count discrepancy to trip it up? Just a wild guess in the hopes of helping reproduce the problem. --Andy ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
NSOutlineView column sizing problems
Hi all, I have an NSOutlineView with three columns. I want the first column to resize but I want to keep the last two columns at a fixed size. For the last two columns, I have set the min/max constraints to the same width and I have unchecked Resizes with table and User resizable. The left hand column has Resizes with table and User resizable checked and the Outline View itself has Autoresizes Outline Column checked, Column Sizing set to First Column Only. The enclosing scroll view has Show Horizontal Scroller, Show Vertical Scroller and Automatically hides scrollers checked. What I expect to happen is that if I enter some text in the leftmost column that is wider than the view, the column should be resized to hold the text and the horizontal scrollbar should appear. However, no matter what I do this does not happen. The horizontal scroller never appears and the leftmost column stays the same size. What do I have to do to achieve this behavior? -- Rob Keniger ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: NSOutlineView column sizing problems
On Jul 29, 2009, at 12:38 AM, Rob Keniger r...@menumachine.com wrote: What I expect to happen is that if I enter some text in the leftmost column that is wider than the view, the column should be resized to hold the text and the horizontal scrollbar should appear. That's not what automatic column resizing means. Automatic column resizing happens when the scroll view's frame changes. What do I have to do to achieve this behavior? You will need to somehow autosize your field editor and column in response to the changing text. --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: Cahnging bgColor of a UIView not working.
Hello, well I found the reason of the exception. But still they color its not being changed if I put [UIColor blueColor] then it works, but it doesn't work with RGB doing [[UIColor alloc] initWithRed .. ] I tried also [UIColor colorWithCGColor:CGColorCreateGenericRBG()]; but the compiler just decided to send error that the method CGColorCreateGenericRGB its unreachable, even I have the CoreGraphics library in the project and im importing in in the file... dunno what to do.. I need to be very accurate with the color that im setting, I know the values in rgb but why is not working? Thnaks Gustavo Pizano On Jul 29, 2009, at 11:29 AM, Gustavo Pizano wrote: Hello. Im trying to change the color of a UIView programatically but something is wrong. Im pressing a button which triggers an IBAction, which does the following: [[self view] setBackgroundColor:[UIColor colorWithRed:20.0 green: 10.0 blue: 30.0 alpha:1.0]]; but when I press the button the program blows with an NSInvalidArgumentException.. what am I doing wrong? thanks Gustavo Pizano ___ 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: Cahnging bgColor of a UIView not working.
The arguments to that UIColor method should be in the range of 0 to 1. Divide each RGB value by 255 to get them into that range. On 2009-07-29, at 6:34 AM, Gustavo Pizano wrote: Hello, well I found the reason of the exception. But still they color its not being changed if I put [UIColor blueColor] then it works, but it doesn't work with RGB doing [[UIColor alloc] initWithRed .. ] I tried also [UIColor colorWithCGColor:CGColorCreateGenericRBG ()]; but the compiler just decided to send error that the method CGColorCreateGenericRGB its unreachable, even I have the CoreGraphics library in the project and im importing in in the file... dunno what to do.. I need to be very accurate with the color that im setting, I know the values in rgb but why is not working? Thnaks Gustavo Pizano On Jul 29, 2009, at 11:29 AM, Gustavo Pizano wrote: Hello. Im trying to change the color of a UIView programatically but something is wrong. Im pressing a button which triggers an IBAction, which does the following: [[self view] setBackgroundColor:[UIColor colorWithRed:20.0 green: 10.0 blue: 30.0 alpha:1.0]]; but when I press the button the program blows with an NSInvalidArgumentException.. what am I doing wrong? thanks Gustavo Pizano ___ 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/bwalkin%40gmail.com This email sent to bwal...@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: Cahnging bgColor of a UIView not working.
OOO how could I forget that... grrr.. thanks ! :D On Jul 29, 2009, at 1:52 PM, Brandon Walkin wrote: The arguments to that UIColor method should be in the range of 0 to 1. Divide each RGB value by 255 to get them into that range. On 2009-07-29, at 6:34 AM, Gustavo Pizano wrote: Hello, well I found the reason of the exception. But still they color its not being changed if I put [UIColor blueColor] then it works, but it doesn't work with RGB doing [[UIColor alloc] initWithRed .. ] I tried also [UIColor colorWithCGColor:CGColorCreateGenericRBG()]; but the compiler just decided to send error that the method CGColorCreateGenericRGB its unreachable, even I have the CoreGraphics library in the project and im importing in in the file... dunno what to do.. I need to be very accurate with the color that im setting, I know the values in rgb but why is not working? Thnaks Gustavo Pizano On Jul 29, 2009, at 11:29 AM, Gustavo Pizano wrote: Hello. Im trying to change the color of a UIView programatically but something is wrong. Im pressing a button which triggers an IBAction, which does the following: [[self view] setBackgroundColor:[UIColor colorWithRed:20.0 green: 10.0 blue: 30.0 alpha:1.0]]; but when I press the button the program blows with an NSInvalidArgumentException.. what am I doing wrong? thanks Gustavo Pizano ___ 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/bwalkin%40gmail.com This email sent to bwal...@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
NSArrayController and avoidsEmptySelection
I have an NSArrayController hooked up to an NSCollectionView. When a user clicks into the empty space of the NSCollectionView, I would like it so they do not lose their currently selected items. I would have thought it should have been as simple as telling the NSArrayController to avoid empty selections. However, I do not get the desired result when this property is set. Is there something else that needs to be setup in order for this to work as expected or is my assumption about what that property is suppose to do completely wrong? In order to temporarily achieve the desired effect, I ended up subclasing NSArrayController and overriding the setSelectionIndexes: method to ignore index sets with a count of 0. However, this seems more like a work around than a solution. Cheers, Carmen ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: NSOpenPanel Exception/Bug
On Jul 28, 2009, at 11:24 PM, Kyle Sluder wrote:
On Jul 28, 2009, at 11:12 PM, Seth Willits sli...@araelium.com
wrote:
Yes. It just fires off a task.
Is there a particular reason you're doing this instead of using UTIs?
LaunchServices only look at certain tags to determine a UTI, and the
extension trumps everything else. There are numerous problems with
that, so I'd guess he's using /usr/bin/file to sniff content.
[task waitUntilExit];
Doing this while displaying an open panel might not be a good idea,
especially if it's waiting on the current runloop to fetch some
information. Like perhaps network volumes shown in the sidebar.
I think you're right on here (although I think it would still be an
NSOpenPanel bug). I'd try doing the equivalent of waitUntilExit using
a different runloop mode:
while ([task isRunning]) {
NSDate *date = [[NSDate alloc] initWithTimeIntervalSinceNow:0.1];
[[NSRunLoop currentRunLoop] runMode:@SomePrivateMode beforeDate:date
[date release];
}
smime.p7s
Description: S/MIME cryptographic signature
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Re: NSArrayController and avoidsEmptySelection
On Jul 29, 2009, at 8:19 AM, Carmen Cerino Jr. wrote: I have an NSArrayController hooked up to an NSCollectionView. When a user clicks into the empty space of the NSCollectionView, I would like it so they do not lose their currently selected items. I would have thought it should have been as simple as telling the NSArrayController to avoid empty selections. However, I do not get the desired result when this property is set. Is there something else that needs to be setup in order for this to work as expected or is my assumption about what that property is suppose to do completely wrong? I would file this as a bug. NSCollectionView and NSArrayController should work the same as NSTableView and NSArrayController in this regard. In order to temporarily achieve the desired effect, I ended up subclasing NSArrayController and overriding the setSelectionIndexes: method to ignore index sets with a count of 0. However, this seems more like a work around than a solution. Since it's broken, the only way to ensure this works properly in Leopard is to implement a work-around. I don't see any problem with yours. It's what I would probably end up doing. One caveat in case it hadn't occurred to you (you didn't say): I would only implement this logic if there is at least one object in the array controller's contents. -- I.S. ___ 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: something I can't understand
verticalLoc and x are readonly values, you cannot assign them.
use the frame property, first to retrieve it, change the x value and then to
reassign to the button.
something like
CGFrame frame = pPngButton.frame;
frame.x = ...;
pPngButton.frame = frame;
Dragos
On Wed, Jul 29, 2009 at 3:24 AM, Agha Khan agha.k...@me.com wrote:
Hi:
Thank you for your reply.
Oh yes. It an Objective-C class.
regardless I place (bVerticalDisplay == YES) or not. The function silently
fails, with no warnings.
The I decided to
pPngButton.verticalLoc.x = (bVerticalDisplay == YES) ? 250 : 410;
This time I got warning.
error: lvalue required as left operand of assignment
Many thanks
-Agha
On Jul 28, 2009, at 7:59 PM, Kiel Gillard wrote:
On 29/07/2009, at 12:52 PM, Agha Khan wrote:
Hi:
I have a struct
@interface PngButton : UIButton
{
@public
bool OffPos;
CGPoint horizontalLoc;
CGPoint verticalLoc;
}
@property (assign) bool OffPos;
@property (assign) CGPoint horizontalLoc;
@property (assign) CGPoint verticalLoc;
@end
No, you have an Objective-C class.
PngButton* pPngButton = [PngButton
buttonWithType:UIButtonTypeInfoDark];
[pPngButton setFrame:CGRectMake(screenRect.size.width - 70.0, 50.0, 36,
36)]; // No problem
pPngButton.verticalLoc = CGPointMake((bVerticalDisplay == YES) ? 250 :
410, 50.0);
I get an error
error: lvalue required as left operand of assignment
Why it is not working? I shouldn't get this error.
Any help will be very much appreciated.
Do you get any warnings?
Try this and see what happens:
pPngButton.verticalLoc = CGPointMake((bVerticalDisplay == YES ? 250.0 :
410.0), 50.0);
Kiel
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rvalue vs lvalue (was Re: something I can't understand)
On Jul 29, 2009, at 8:35 AM, Dragos Ionel wrote:
On Wed, Jul 29, 2009 at 3:24 AM, Agha Khan agha.k...@me.com wrote:
On Jul 28, 2009, at 7:59 PM, Kiel Gillard wrote:
On 29/07/2009, at 12:52 PM, Agha Khan wrote:
Hi:
I have a struct
@interface PngButton : UIButton
{
@public
bool OffPos;
CGPoint horizontalLoc;
CGPoint verticalLoc;
}
@property (assign) bool OffPos;
@property (assign) CGPoint horizontalLoc;
@property (assign) CGPoint verticalLoc;
@end
No, you have an Objective-C class.
PngButton* pPngButton = [PngButton
buttonWithType:UIButtonTypeInfoDark];
[pPngButton setFrame:CGRectMake(screenRect.size.width - 70.0,
50.0, 36,
36)]; // No problem
pPngButton.verticalLoc = CGPointMake((bVerticalDisplay ==
YES) ? 250 :
410, 50.0);
I get an error
error: lvalue required as left operand of assignment
Why it is not working? I shouldn't get this error.
Any help will be very much appreciated.
Do you get any warnings?
Try this and see what happens:
pPngButton.verticalLoc = CGPointMake((bVerticalDisplay == YES ?
250.0 :
410.0), 50.0);
Kiel
Hi:
Thank you for your reply.
Oh yes. It an Objective-C class.
regardless I place (bVerticalDisplay == YES) or not. The function
silently
fails, with no warnings.
The I decided to
pPngButton.verticalLoc.x = (bVerticalDisplay == YES) ? 250 : 410;
This time I got warning.
error: lvalue required as left operand of assignment
Many thanks
-Agha
verticalLoc and x are readonly values, you cannot assign them.
use the frame property, first to retrieve it, change the x value and
then to
reassign to the button.
something like
CGFrame frame = pPngButton.frame;
frame.x = ...;
pPngButton.frame = frame;
Dragos
No, that isn't correct at all - he's declared verticalLoc as a
property that is perfectly valid to set (though, since this is the
iPhone, should be declared as nonatomic as well)
The problem is that the (simplified) code:
pPngButton.verticalLoc.x = 410;
is equivalent to writing:
[pPngButton verticalLoc].x = 410;
since pPngButton.verticalLoc is used as a getter in this case (since
your code then accesses the x field of the result).
This would be similar to:
CGPointMake(100,200).x = 410;
i.e., you call a function (which returns a CGPoint value) and then
you try to set one of the fields of the CGPoint value (which is then
thrown away).
Things like structures returned from a function, or scalar values,
pointers, etc... are referred to as r-values, meaning they are
values that appear on the right hand side of an assignment - they
aren't stored in meaningful locations in memory, they just have a
value but not storage. Variables (or memory locations) that can
appear on the left hand side of an assignment are called l-values -
they are values, but they also are stored somewhere and can have their
values changed.
So what you'd need to do is:
CGPoint pt = pPngButton.verticalLoc;
pt.x = (bVerticalDisplay == YES) ? 250 : 410;
pPngButton.verticalLoc = pt.x;
Glenn Andreas gandr...@gandreas.com
http://www.gandreas.com/ wicked fun!
Mad, Bad, and Dangerous to Know
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Re: rvalue vs lvalue (was Re: something I can't understand)
On Jul 29, 2009, at 4:12 PM, glenn andreas wrote: On Jul 29, 2009, at 8:35 AM, Dragos Ionel wrote: verticalLoc and x are readonly values, you cannot assign them. use the frame property, first to retrieve it, change the x value and then to reassign to the button. something like CGFrame frame = pPngButton.frame; frame.x = ...; pPngButton.frame = frame; Dragos No, that isn't correct at all - he's declared verticalLoc as a property that is perfectly valid to set (though, since this is the iPhone, should be declared as nonatomic as well) ... Not only that, but also there is no such thing as a CGFrame (it must be CGRect) and no such thing as frame.x (it must be frame.origin.x), if frame is a CGRect. Wagner ___ 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: NSWindow reference remains null after window did load (SOLVED)
No, the syntax was right. The problem mysteriously disappeared when I altered the timing of the method to redraw the table, including the time data is loaded. Thanks for your suggestions. On Jul 28, 2009, at 8:38 PM, Andy Lee wrote: Just to be sure -- your method is numberOfRowsInTableView:, not numberOfRowsInTableView, right? You mentioned you'd tried copying working method declarations, so I suspect that's not the problem, but I figured I'd double-check just in case *you* were calling it somewhere you'd forgotten about and it wasn't the table view that was calling it. There was a similar mystery within the past few months, with very similar impossible symptoms. I believe the solution was a missing call to reloadData. But this doesn't sound like your problem, because if numberOfRowsInTableView: returns 17, then the value- getter method should have gotten called 17 times for each column. ___ 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: Cahnging bgColor of a UIView not working.
On Jul 29, 2009, at 4:52 AM, Brandon Walkin wrote: The arguments to that UIColor method should be in the range of 0 to 1. Divide each RGB value by 255 to get them into that range. This is more of a PSA than anything (because I've seen more than a fair share of devs slap themselves on the head here too): Always ensure your using floating point division if your going to do this. That means always dividing by 255.0. I've seen too many people asking why do I always get black and pointed out because you forgot the . 0 :). -- 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: Cahnging bgColor of a UIView not working.
On Jul 29, 2009, at 12:56 PM, David Duncan wrote: On Jul 29, 2009, at 4:52 AM, Brandon Walkin wrote: The arguments to that UIColor method should be in the range of 0 to 1. Divide each RGB value by 255 to get them into that range. This is more of a PSA than anything (because I've seen more than a fair share of devs slap themselves on the head here too): Always ensure your using floating point division if your going to do this. That means always dividing by 255.0. I've seen too many people asking why do I always get black and pointed out because you forgot the .0 :). -- David Duncan Apple DTS Animation and Printing *jaw dropping* Well, I guess that explains that. I finally just gave up and did the math myself. Good tip, thanks! Brian ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: NSArrayController subclass computed property not being updated
On 29 Jul 2009, at 06:09, Alexander Heinz wrote:
Hello all,
I've got an NSArrayController subclass with a computed property:
@property (readonly) BOOL canRemoveSelection;
(This basically adds some application-specific checks to the
canRemove: property, so that I can bind a remove button in
Interface Builder.)
I want the property to be recomputed every time the selectionIndex
or selectionIndexes of the array controller change, so, in my .m
file, I have:
+ (NSSet*)keyPathsForValuesAffectingCanRemoveSelection
{
return [NSSet setWithObjects:@selectionIndex,
@selectionIndexes, nil];
}
(I realize this is probably redundant, but bear with me.)
However, the accessor for the property (i.e., - (BOOL)
canRemoveSelection) is never called, beyond the initial call when
the object is created. As a result, the button bound to the property
never changes state.
I've checked to make sure that -setSelectionIndexes: is being
called, and it is, but the property is not re-computed.
Does anyone see anything immediately wrong here?
Further to the other suggestions, have you checked in the debugger
that your -keyPathsForValuesAffectingCanRemoveSelection is being
called? It might be that NSArrayController overrides -
keyPathsForValuesAffectingKey: to not call custom methods like yours.
Mike.
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Re: NSArrayController subclass computed property not being updated
On Jul 29, 2009, at 1:09 AM, Alexander Heinz wrote:
I've got an NSArrayController subclass with a computed property:
@property (readonly) BOOL canRemoveSelection;
(This basically adds some application-specific checks to the
canRemove: property, so that I can bind a remove button in
Interface Builder.)
I want the property to be recomputed every time the selectionIndex
or selectionIndexes of the array controller change, so, in my .m
file, I have:
+ (NSSet*)keyPathsForValuesAffectingCanRemoveSelection
{
return [NSSet setWithObjects:@selectionIndex,
@selectionIndexes, nil];
}
[...]
Does anyone see anything immediately wrong here?
My previous post explains why this doesn't work:
http://lists.apple.com/archives/Cocoa-dev/2009/Apr/msg01683.html
Jim
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Re: Cahnging bgColor of a UIView not working.
This is good to use: #define UIColorFromRGB(rgbValue) [UIColor \ colorWithRed:((float)((rgbValue 0xFF) 16))/255.0 \ green:((float)((rgbValue 0xFF00) 8))/255.0 \ blue:((float)(rgbValue 0xFF))/255.0 alpha:1.0] ... cell.textColor = UIColorFromRGB(0x33); On Wed, Jul 29, 2009 at 1:04 PM, Brian Slick briansl...@mac.com wrote: On Jul 29, 2009, at 12:56 PM, David Duncan wrote: On Jul 29, 2009, at 4:52 AM, Brandon Walkin wrote: The arguments to that UIColor method should be in the range of 0 to 1. Divide each RGB value by 255 to get them into that range. This is more of a PSA than anything (because I've seen more than a fair share of devs slap themselves on the head here too): Always ensure your using floating point division if your going to do this. That means always dividing by 255.0. I've seen too many people asking why do I always get black and pointed out because you forgot the .0 :). -- David Duncan Apple DTS Animation and Printing *jaw dropping* Well, I guess that explains that. I finally just gave up and did the math myself. Good tip, thanks! Brian ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/edolecki%40gmail.com This email sent to edole...@gmail.com -- http://ericd.net Interactive design and development ___ 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: Fun (or not) with NSArrayControllers and CoreData.
On Jul 28, 2009, at 5:23 PM, Quincey Morris wrote:
On Jul 28, 2009, at 16:44, Daniel DeCovnick wrote:
-(NSSet *)allDescendentsJobs
{
...
}
But I can't bind JobsArrayController's content set to this because
entity Folder does not support Key Value Coding for property
'allDescendentsJobs' because, as I understand it, it's read-only*.
At this point I'm stuck. What do I do to get past this?
'allDescendentsJobs' (not how 'descendants' is spelled, btw)
Whoops!
is not a property of entity Folder, so of course you can't point a
NSArrayController in *entity* mode at it.
However, 'allDescendentsJobs' *is* a property of your custom
NSManagedObject subclass that corresponds to the entity, so you can
point a NSArrayController at it in *class* mode. That means you'll
have to compute an array instead of a set.
Returning an array is easy enough, and I presume you mean I should
create an array controller of class Job, not Folder, since Folders are
represented by a tree controller. Trying it out, everything works as
it's supposed to... except deletion and refreshing*, both of which I
suspect relate to the next point.
*adding works (albeit clumsily) by having a second Job array
controller in entity mode, bound to
FolderTreeController.selection.jobs. The tableview doesn't refresh
when a job is added, but at least it shows up when refreshed manually,
which is enough to tell me that my allDescendantsJobs code works fine.
Deleting is worse. In leaf node Folders it works fine (with the same
refresh problem as adding), but I can't delete Jobs from a Folder's
children, and worse, if a Folder has both Jobs and children, the Job
selection onscreen does not match the selection in the array
controller; the latter is one of only those jobs in the Folder. But
given what's below, you probably already knew that would happen. ;)
You have another problem, though. Your NSManagedObject subclass is
not (by the code you've sketched) KVO compliant for the
'allDescendentsJobs' property, so if you're expecting the table view
to update when the jobs change at some level, it won't.
I read over the Ensuring KVO compliance docs, and I have to say, I
don't think I understand it. At first glance it looks fine to me, but
obviously it's not. Do I have to implement mutableSet/
ArrayValueForKey: myself, or am I completely on the wrong track?
-Daniel
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Re: something I can't understand
Hi Dragos lonal:
I didn't mention they have readonly attributes. How can we remove
readonly attribute?
Thanks for reply.
Agha
On Jul 29, 2009, at 6:35 AM, Dragos Ionel wrote:
verticalLoc and x are readonly values, you cannot assign them.
use the frame property, first to retrieve it, change the x value and
then to reassign to the button.
something like
CGFrame frame = pPngButton.frame;
frame.x = ...;
pPngButton.frame = frame;
Dragos
On Wed, Jul 29, 2009 at 3:24 AM, Agha Khan agha.k...@me.com wrote:
Hi:
Thank you for your reply.
Oh yes. It an Objective-C class.
regardless I place (bVerticalDisplay == YES) or not. The function
silently fails, with no warnings.
The I decided to
pPngButton.verticalLoc.x = (bVerticalDisplay == YES) ? 250 : 410;
This time I got warning.
error: lvalue required as left operand of assignment
Many thanks
-Agha
On Jul 28, 2009, at 7:59 PM, Kiel Gillard wrote:
On 29/07/2009, at 12:52 PM, Agha Khan wrote:
Hi:
I have a struct
@interface PngButton : UIButton
{
@public
bool OffPos;
CGPoint horizontalLoc;
CGPoint verticalLoc;
}
@property (assign) bool OffPos;
@property (assign) CGPoint horizontalLoc;
@property (assign) CGPoint verticalLoc;
@end
No, you have an Objective-C class.
PngButton* pPngButton = [PngButton
buttonWithType:UIButtonTypeInfoDark];
[pPngButton setFrame:CGRectMake(screenRect.size.width - 70.0, 50.0,
36, 36)]; // No problem
pPngButton.verticalLoc = CGPointMake((bVerticalDisplay == YES) ?
250 : 410, 50.0);
I get an error
error: lvalue required as left operand of assignment
Why it is not working? I shouldn't get this error.
Any help will be very much appreciated.
Do you get any warnings?
Try this and see what happens:
pPngButton.verticalLoc = CGPointMake((bVerticalDisplay == YES ?
250.0 : 410.0), 50.0);
Kiel
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Re: something I can't understand
Actually it was my mistake as pointed by Glenn and Wagner.
My apologies to have misled.
Dragos
iphodea.com
On Wed, Jul 29, 2009 at 2:40 PM, Agha Khan agha.k...@me.com wrote:
Hi Dragos lonal:I didn't mention they have readonly attributes. How can we
remove readonly attribute?
Thanks for reply.
Agha
On Jul 29, 2009, at 6:35 AM, Dragos Ionel wrote:
verticalLoc and x are readonly values, you cannot assign them.
use the frame property, first to retrieve it, change the x value and then
to reassign to the button.
something like
CGFrame frame = pPngButton.frame;
frame.x = ...;
pPngButton.frame = frame;
Dragos
On Wed, Jul 29, 2009 at 3:24 AM, Agha Khan agha.k...@me.com wrote:
Hi:
Thank you for your reply.
Oh yes. It an Objective-C class.
regardless I place (bVerticalDisplay == YES) or not. The function silently
fails, with no warnings.
The I decided to
pPngButton.verticalLoc.x = (bVerticalDisplay == YES) ? 250 : 410;
This time I got warning.
error: lvalue required as left operand of assignment
Many thanks
-Agha
On Jul 28, 2009, at 7:59 PM, Kiel Gillard wrote:
On 29/07/2009, at 12:52 PM, Agha Khan wrote:
Hi:
I have a struct
@interface PngButton : UIButton
{
@public
bool OffPos;
CGPoint horizontalLoc;
CGPoint verticalLoc;
}
@property (assign) bool OffPos;
@property (assign) CGPoint horizontalLoc;
@property (assign) CGPoint verticalLoc;
@end
No, you have an Objective-C class.
PngButton* pPngButton = [PngButton
buttonWithType:UIButtonTypeInfoDark];
[pPngButton setFrame:CGRectMake(screenRect.size.width - 70.0, 50.0, 36,
36)]; // No problem
pPngButton.verticalLoc = CGPointMake((bVerticalDisplay == YES) ? 250 :
410, 50.0);
I get an error
error: lvalue required as left operand of assignment
Why it is not working? I shouldn't get this error.
Any help will be very much appreciated.
Do you get any warnings?
Try this and see what happens:
pPngButton.verticalLoc = CGPointMake((bVerticalDisplay == YES ? 250.0 :
410.0), 50.0);
Kiel
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Re: something I can't understand
Thank you for reply.
I am working with Windows for 15 years but new to Objective-C.
Well after spending whole 2 days on a such a small problem I
understand this is a bug and Apple has to fix it. The bug is If you
inherit for UIButton then it is not going to work.
It worked fine on
CGPoint pt = CGPointMake((bVerticalDisplay == YES) ? 250 :
410,50); // No problem.
but it did not work
CGPoint pt = pPngButton.verticalLoc; // GOt
__TERMINATING__DUE_TO_UNCAUGHT_EXCEPTION__
so I removed that line.
and tried
CGPoint pt = CGPointMake((bVerticalDisplay == YES) ? 250 :
410,50); // No problem.
pPngButton.verticalLoc= pt; // Again GOt
__TERMINATING__DUE_TO_UNCAUGHT_EXCEPTION__
I have no choice but to abandoned that approach and save that data
somewhere else.
Thank you helping me. I am not sure how can we report that bug to Apple.
Best regards
Agha
On Jul 29, 2009, at 11:56 AM, Dragos Ionel wrote:
Actually it was my mistake as pointed by Glenn and Wagner.
My apologies to have misled.
Dragos
iphodea.com
On Wed, Jul 29, 2009 at 2:40 PM, Agha Khan agha.k...@me.com wrote:
Hi Dragos lonal:
I didn't mention they have readonly attributes. How can we remove
readonly attribute?
Thanks for reply.
Agha
On Jul 29, 2009, at 6:35 AM, Dragos Ionel wrote:
verticalLoc and x are readonly values, you cannot assign them.
use the frame property, first to retrieve it, change the x value
and then to reassign to the button.
something like
CGFrame frame = pPngButton.frame;
frame.x = ...;
pPngButton.frame = frame;
Dragos
On Wed, Jul 29, 2009 at 3:24 AM, Agha Khan agha.k...@me.com wrote:
Hi:
Thank you for your reply.
Oh yes. It an Objective-C class.
regardless I place (bVerticalDisplay == YES) or not. The function
silently fails, with no warnings.
The I decided to
pPngButton.verticalLoc.x = (bVerticalDisplay == YES) ? 250 : 410;
This time I got warning.
error: lvalue required as left operand of assignment
Many thanks
-Agha
On Jul 28, 2009, at 7:59 PM, Kiel Gillard wrote:
On 29/07/2009, at 12:52 PM, Agha Khan wrote:
Hi:
I have a struct
@interface PngButton : UIButton
{
@public
bool OffPos;
CGPoint horizontalLoc;
CGPoint verticalLoc;
}
@property (assign) bool OffPos;
@property (assign) CGPoint horizontalLoc;
@property (assign) CGPoint verticalLoc;
@end
No, you have an Objective-C class.
PngButton* pPngButton = [PngButton
buttonWithType:UIButtonTypeInfoDark];
[pPngButton setFrame:CGRectMake(screenRect.size.width - 70.0, 50.0,
36, 36)]; // No problem
pPngButton.verticalLoc = CGPointMake((bVerticalDisplay == YES) ?
250 : 410, 50.0);
I get an error
error: lvalue required as left operand of assignment
Why it is not working? I shouldn't get this error.
Any help will be very much appreciated.
Do you get any warnings?
Try this and see what happens:
pPngButton.verticalLoc = CGPointMake((bVerticalDisplay == YES ?
250.0 : 410.0), 50.0);
Kiel
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Re: Fun (or not) with NSArrayControllers and CoreData.
On Jul 29, 2009, at 11:27, Daniel DeCovnick wrote: I read over the Ensuring KVO compliance docs, and I have to say, I don't think I understand it. At first glance it looks fine to me, but obviously it's not. Do I have to implement mutableSet/ ArrayValueForKey: myself, or am I completely on the wrong track? Your NSManagedObject subclass Job, if I've got the naming right, has a array property allDescendentsJobs. The NSArrayController has as its content array the *root* Job object. Therefore, the NSArrayController is only going to get a KVO notification if the allDescendentsJobs property of the *root* Job changes KVO-compliantly. So ask: what is going to cause the allDescendentsJobs property of the *root* Job to be updated KVO-compliantly? Answer: nothing, because the property value is only created on demand (i.e. the first time the NSArrayController refers to it), and thereafter the property is read- only. Getting KVO-compliant updates is hard in this situation. The root level property is affected by every add/replace/remove change at every lower level, which is potentially a lot of stuff to keep track of. You're going to have to invent a strategy for changes at the lower levels to inform the root level that something has changed, and for the root level to manually trigger the KVO notification at the end of a cycle of changes. (If you have implemented Undo, this is analogous to the way individual property changes are batched into an undo group.) It is feasible to trigger KVO notifications at lower levels and let them percolate up naturally, but that of course will cause the NSArrayController to be notified multiple times for what is essentially a single change. Probably it's going to be easier to solve if you promote allDescendentsJobs into a read/write property (i.e. back it with a NSMutableArray instance variable, or make it a Core Data transient property -- in which case you'd be back to a set instead of an array, and back to entity mode in the NSArrayController). Then, whenever you add/remove/remove a Job node at any level, you'd also manually update the root allDescendentsJobs property directly. Note that this would still generate far too many KVO notifications for the root object's allDescendentsJobs property, so you'd have to deal with that. Also, you have to make sure the property is updated properly on undo (which is why making it a transient Core Data property is ultimately easier than using an instance variable, if you're supporting undo, since you'd get that for free). If you think this sounds complicated, you're right. (If anyone else wants to jump in with an easier solution, I'd be happy to cede the territory.) Finally, one thing that helps with this problem is to give up on trying to use KVO *on this property* to keep your user interface up-to- date and write a data source delegate instead. If you have to keep track of when the update is necessary, it's far easier to call 'reloadData' (and it doesn't hurt so bad to call that multiple times) than to trick KVO into doing the right thing. Also (whew!), NSOutlineView + NSTreeController + NSArrayController + KVO + undo is reputed to have bugs, so you may do everything right and then have your application crash after the user does an undo. (I've run into this problem personally, but by the time you get there the circumstances are so murky it's hard to know who to blame. But the archives do claim this is a bug, and no one from Apple has denied it AFAIK.) Is that more information than you wanted? :) P.S. If anyone else wants to jump in with an easier solution, I'd be happy to cede the territory. ___ 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: something I can't understand
On Jul 29, 2009, at 12:20 PM, Agha Khan wrote: Well after spending whole 2 days on a such a small problem I understand this is a bug and Apple has to fix it. The bug is If you inherit for UIButton then it is not going to work. Given that this code is really really basic stuff, do you really think that there would be a bug along this code path? Pretty darned unlikely. Assuming you are using @synthesize to synthesize the setter/getter for that property, there are many hundreds of other code paths that do exactly that and those paths are executed billions of times per day across all the iPhones in the world. That is an awful lot of evidence that @synthesize properties is working just fine. So, no, this isn't a bug that Apple has to fix. It is a bug that you have to fix. Or a bug that you have to demonstrate isn't your bug, which you haven't done yet. It worked fine on CGPoint pt = CGPointMake((bVerticalDisplay == YES) ? 250 : 410,50); // No problem. but it did not work CGPoint pt = pPngButton.verticalLoc; // GOt __TERMINATING__DUE_TO_UNCAUGHT_EXCEPTION__ so I removed that line. and tried CGPoint pt = CGPointMake((bVerticalDisplay == YES) ? 250 : 410,50); // No problem. pPngButton.verticalLoc= pt; // Again GOt __TERMINATING__DUE_TO_UNCAUGHT_EXCEPTION__ What is the one common case for both of the lines of code that crash? pPngButton.verticalLoc Are you absolutely positively sure that pPngButton is actually a valid object at the point above where the crash happens? I'd bet you a pitcher of beer it isn't or that you have implemented - verticalLoc and -setVerticalLoc: incorrectly (if not using @synthesize). I'd wager that you have not properly retained or may have over-released the object sometime prior. Try inserting [pPngButton self] above either of the crashing lines. More likely than not, *that* will crash. Some time ago, you wrote: PngButton* pPngButton = [PngButton buttonWithType:UIButtonTypeInfoDark]; [pPngButton setFrame:CGRectMake(screenRect.size.width - 70.0, 50.0, 36, 36)]; // No problem pPngButton.verticalLoc = CGPointMake((bVerticalDisplay == YES) ? 250 : 410, 50.0); Is this the entirety of your code that refers to pPngButton? Is it really all contiguous like that? Or does that latter line of code appear in a different method?Where are you retaining pPngButton? ...do you stick it in view hierarchy somewhere? b.bum ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
DragDrop to desktop - file icons layout problem
Hi, All, Maybe it's a stupid question, but I can't find a solution... I'm dragging files from my app to desktop. All goes OK, but file icons are located one exactly above another if I'm dragging many items. As a result, few extra clicks on desktop are required to be able to split these icons. The question is, how could I assign icons location for dropped items? I believe, though didn't yet tested it, that similar problem will be with Finder window, when it is in icons mode. The only point where I could get such information (as I believe) could be tableView::namesOfPromisedFilesDroppedAtDestination: method, but it doesn't contain any information about icons location. Any ideas? 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: where can I download xcode 3.2
On Jul 28, 2009, at 12:22 AM, Kyle Sluder wrote: On Jul 27, 2009, at 10:38 AM, YongLi liyon...@gmail.com wrote: I have installed the snow leopardbut i can't find the download link of xcode 3.2 1. This is cocoa-dev. This list exists for the discussion of Cocoa, not for downloading seeds or other non-Cocoa topics. 2. Snow Leopard and the developer tools are distributed under NDA and you therefore can't talk about them publicly. NDA forums can be found at http://devforums.apple.com. 3. All the downloads are in the same place: the Mac dev center at http://developer.apple.com . True, all the downloads are in the same place as you said.However, the answer to the OP's question can be found by carefully paying attention to the (publicly available PDF document) on that very download site iPhone SDK 3.0 (Snow Leopard) Read Me Cheers, . . . . . . . .Henry ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: Cahnging bgColor of a UIView not working.
In fact I did slap in my head when I realized about the argumetns, after reading the first reply.. big DUH for me . Thanks for all the suggestions. G. On Jul 29, 2009, at 6:56 PM, David Duncan wrote: On Jul 29, 2009, at 4:52 AM, Brandon Walkin wrote: The arguments to that UIColor method should be in the range of 0 to 1. Divide each RGB value by 255 to get them into that range. This is more of a PSA than anything (because I've seen more than a fair share of devs slap themselves on the head here too): Always ensure your using floating point division if your going to do this. That means always dividing by 255.0. I've seen too many people asking why do I always get black and pointed out because you forgot the .0 :). -- 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/gustavxcodepicora%40gmail.com This email sent to gustavxcodepic...@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
Little mind explanation for changing views in iPhone
Hello all. Well after reading the docs, and some examples form books, I came up and tried to build a prototype of what I want. So I needed to load a initial view with 2 buttons, one will lead me to InfoViewController and the other one to an AuthenticationViewController, each one has its related .xib, from the AppViewcontroller, I can have 2 instances of each viewController, and then if I put a button in the appController view I can swap the views, but the button will have to remain (in a toolbar, or something similar). What I want is to load InfoViewController's view when app loads, with will be at the viewDidload form the AppViewController, and InfroViewController's view should have its design, but also a button to go back to the Main view, which is the one in AppviewController's view. Also from the AuthenticationViewController's view So I had that in mind, but when I came up to implemented I had a problem, the IBAction for those buttons I will place them in their respective view controllers (InfoViewController and AuthenticationviewController), but they know nothing about the AppViewController who is (was)the one in charge of swapping the views... Should I ask for the AppViewController instance (view singleton patern) and send the aodl and new view to be placed? ( I did something like this , not to change views, but displaying things in a cocoa app), but I dunno if these same idea can be applied in a iPhone app, or is there a better workaround. Thanks Gustavo Pizano ___ 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: something I can't understand
Dear bbum:
Well After your email I started to write a small app to send you the
project for passing my point across.
AND FOUND THE PROBLEM.
@interface PngButton : UIButton
{
@public
CGPoint horizontalLoc;
CGPoint verticalLoc;
}
@property (assign) CGPoint horizontalLoc;
@property (assign) CGPoint verticalLoc;
@end
rotateRightBtn = [PngButton buttonWithType:UIButtonTypeInfoDark];
In 99.99% cases it is correct statement. But it is not correct for my
application, because it will create UIButton button but not embedded
other objects as I am holding other CGPoint objects.
NO wonder it was failing. :-)
Now my question how to create such object and set flags as
buttonWithType:UIButtonTypeInfoDark?
Any Idea?
Your email is very much appreciated.
Thanks for putting me in right direction.
Best regards
Agha
On Jul 29, 2009, at 12:50 PM, Bill Bumgarner wrote:
On Jul 29, 2009, at 12:20 PM, Agha Khan wrote:
Well after spending whole 2 days on a such a small problem I
understand this is a bug and Apple has to fix it. The bug is If you
inherit for UIButton then it is not going to work.
Given that this code is really really basic stuff, do you really
think that there would be a bug along this code path?
Pretty darned unlikely. Assuming you are using @synthesize to
synthesize the setter/getter for that property, there are many
hundreds of other code paths that do exactly that and those paths
are executed billions of times per day across all the iPhones in the
world. That is an awful lot of evidence that @synthesize
properties is working just fine.
So, no, this isn't a bug that Apple has to fix. It is a bug that
you have to fix. Or a bug that you have to demonstrate isn't your
bug, which you haven't done yet.
It worked fine on
CGPoint pt = CGPointMake((bVerticalDisplay == YES) ? 250 :
410,50); // No problem.
but it did not work
CGPoint pt = pPngButton.verticalLoc; // GOt
__TERMINATING__DUE_TO_UNCAUGHT_EXCEPTION__
so I removed that line.
and tried
CGPoint pt = CGPointMake((bVerticalDisplay == YES) ? 250 :
410,50); // No problem.
pPngButton.verticalLoc= pt; // Again GOt
__TERMINATING__DUE_TO_UNCAUGHT_EXCEPTION__
What is the one common case for both of the lines of code that crash?
pPngButton.verticalLoc
Are you absolutely positively sure that pPngButton is actually a
valid object at the point above where the crash happens?
I'd bet you a pitcher of beer it isn't or that you have implemented -
verticalLoc and -setVerticalLoc: incorrectly (if not using
@synthesize). I'd wager that you have not properly retained or may
have over-released the object sometime prior.
Try inserting [pPngButton self] above either of the crashing lines.
More likely than not, *that* will crash.
Some time ago, you wrote:
PngButton* pPngButton = [PngButton
buttonWithType:UIButtonTypeInfoDark];
[pPngButton setFrame:CGRectMake(screenRect.size.width - 70.0, 50.0,
36, 36)]; // No problem
pPngButton.verticalLoc = CGPointMake((bVerticalDisplay == YES) ?
250 : 410, 50.0);
Is this the entirety of your code that refers to pPngButton? Is it
really all contiguous like that? Or does that latter line of code
appear in a different method?Where are you retaining
pPngButton? ...do you stick it in view hierarchy somewhere?
b.bum
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[SOLVED] NSArrayController subclass computed property not being updated
On Jul 29, 2009, at 11:24 AM, Jim Correia wrote:
On Jul 29, 2009, at 1:09 AM, Alexander Heinz wrote:
I've got an NSArrayController subclass with a computed property:
@property (readonly) BOOL canRemoveSelection;
(This basically adds some application-specific checks to the
canRemove: property, so that I can bind a remove button in
Interface Builder.)
I want the property to be recomputed every time the
selectionIndex or selectionIndexes of the array controller
change, so, in my .m file, I have:
+ (NSSet*)keyPathsForValuesAffectingCanRemoveSelection
{
return [NSSet setWithObjects:@selectionIndex,
@selectionIndexes, nil];
}
[...]
Does anyone see anything immediately wrong here?
My previous post explains why this doesn't work:
http://lists.apple.com/archives/Cocoa-dev/2009/Apr/msg01683.html
Jim
Ah! That explains it perfectly. I already had some ideas for
workarounds, I'll go ahead with those.
Thank you,
Alex
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Re: something I can't understand
On Jul 29, 2009, at 2:18 PM, Agha Khan wrote:
Dear bbum:
Well After your email I started to write a small app to send you the
project for passing my point across.
AND FOUND THE PROBLEM.
Awesome -- happy to have helped (and happy you didn't take my email as
insulting... I sometimes find a bit of polite causticism is an
awesome motivator :).
@interface PngButton : UIButton
{
@public
CGPoint horizontalLoc;
CGPoint verticalLoc;
}
@property (assign) CGPoint horizontalLoc;
@property (assign) CGPoint verticalLoc;
@end
rotateRightBtn = [PngButton buttonWithType:UIButtonTypeInfoDark];
In 99.99% cases it is correct statement. But it is not correct for
my application, because it will create UIButton button but not
embedded other objects as I am holding other CGPoint objects.
NO wonder it was failing. :-)
Now my question how to create such object and set flags as
buttonWithType:UIButtonTypeInfoDark?
You might not be able to. I would file a bug via http://bugreport.apple.com/
asking for +buttonWithType: to use [self alloc] instead of
[UIButton alloc] as it is probably doing now. That'd fix your problem
sometime in the future.
For now, you'll probably need to create an instance of your button
class directly
rotateRightBtn = [[PngButton alloc] init...]; (I don't remember what
the initializer is for UIButton)
... and then configure it manually with whatever configuration
UIButtonTypeInfoDark implies.
b.bum
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Re: iTunes DB Change Notifications?
On 2009-07-27, at 3:16 PM, I. Savant wrote: On Jul 27, 2009, at 3:09 PM, slasktrattena...@gmail.com wrote: Short answer: YES. A distributed notification is posted every time the the database is updated. Add an observer for notifications named com.apple.iTunes.sourceSaved posted by object com.apple.iTunes.sources. Is this documented / public? If not, fair warning: this string could change at any time without notice and your product will stop working. -- I.S. I'd say that's likely a no. I'd look for the scripting bridge in iTunes for something useful (not sure that there is in this case). ___ 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: Fun (or not) with NSArrayControllers and CoreData.
On Jul 29, 2009, at 12:40 PM, Quincey Morris wrote: On Jul 29, 2009, at 11:27, Daniel DeCovnick wrote: I read over the Ensuring KVO compliance docs, and I have to say, I don't think I understand it. At first glance it looks fine to me, but obviously it's not. Do I have to implement mutableSet/ ArrayValueForKey: myself, or am I completely on the wrong track? Your NSManagedObject subclass Job, if I've got the naming right, has a array property allDescendentsJobs. The NSArrayController has as its content array the *root* Job object. Therefore, the NSArrayController is only going to get a KVO notification if the allDescendentsJobs property of the *root* Job changes KVO- compliantly. I'm sorry, you misunderstand. My NSManagedObject subclass Folder, not Job, has the allDescendantsJobs, and the NSTreeController/ NSOutlineView has all Folders where parent==nil as its root objects. There is a one Folder to many Jobs relationship. Folders and their children (and their children, etc.) show up in the outline view, and there's a table view of Jobs for the selected Folder (and, ideally, it's children). So ask: what is going to cause the allDescendentsJobs property of the *root* Job to be updated KVO-compliantly? Answer: nothing, because the property value is only created on demand (i.e. the first time the NSArrayController refers to it), and thereafter the property is read-only. I'm perfectly happy and able to put a -newJobAndRefetch: method in my window controller (the xib's File's Owner), but that's insufficient except for the display problem. snipped... I don't think very much of that still applies given the misunderstanding above. Finally, one thing that helps with this problem is to give up on trying to use KVO *on this property* to keep your user interface up- to-date and write a data source delegate instead. Hmm... That may be the easier thing to do. Also (whew!), NSOutlineView + NSTreeController + NSArrayController + KVO + undo is reputed to have bugs, so you may do everything right and then have your application crash after the user does an undo. (I've run into this problem personally, but by the time you get there the circumstances are so murky it's hard to know who to blame. But the archives do claim this is a bug, and no one from Apple has denied it AFAIK.) Oi vey... -Daniel ___ 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: something I can't understand
On Jul 29, 2009, at 2:26 PM, Bill Bumgarner wrote: rotateRightBtn = [[PngButton alloc] init...]; (I don't remember what the initializer is for UIButton) ... and then configure it manually with whatever configuration UIButtonTypeInfoDark implies. The only publicly supported way to set a button to UIButtonTypeInfoDark is via +[UIButton buttonWithType:UIButtonTypeInfoDark]. As Bill said, file a bug if this is 'causing you a problem. Luke ___ 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
[moderator] Re: About Posting [ end of this thread ]
This thread is done. No followups to the list, on this topic, or on what I'm about to say. You can hit the list moderation address or me personally for feedback. For everyone's benefit. 1. Everyone's first source should be Apple documentation. It's written by experts with the backing and review of of engineering and with full access to the source. It's reviewed by an editorial staff that knows more about punctuation than a compiler. But every single one is human. Mistakes can be made. File feedback, file bugs. We do our best to address what we can. 2. Search sample code (searched as part of the docs typically) Written by DTS, Engineering, and DevPubs Engineers. Peer reviewed in a process that requires significant care. But again, humans. Sample code is improving as tools such as clang do. 3. Google/cocoabuilder.com, Stack Overflow etc. There are hundreds of bloggers out there writing excellent cocoa articles, tips, open source frameworks, etc. Not everything is up to date (u-hmm.. Stepwise.com as a prime example of something out of date but still useful to some, I'm sorry) but you can still get ideas and sometimes all it takes is a small push to get you going. 4. Only as the last resort should the mailing lists be hit for questions. 90% have been asked, and the cocoabuilder.com archives of the list are excellent (it hurts to say, but better than our's at Apple's) 5. And remember, no NDA material here. There are devforums.apple.com for that, and as another entirely viable, and supported and monitored, self-support. With particular respect to Idiot Savant. Email can easily convolute nuance. While he posts with a screen-name rather than his real name, he knows his stuff. I understand why he doesn't use his real name, and as a moderator I accept it. Further, he's as kind and considerate an individual as I've met (*like virtually every list member I've had the opportunity to meet over the years*). Ultimately, we're a community. A family. We're working together to make our products and the platform better. And yes, I believe that. Scott Anguish Apple Employee Cococa-dev moderator ___ 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
NSArrayController and avoidsEmptySelection
I have an NSArrayController hooked up to an NSCollectionView. When a user clicks into the empty space of the NSCollectionView, I would like it so they do not lose their currently selected items. I would have thought it should have been as simple as telling the NSArrayController to avoid empty selections. However, I do not get the desired result when this property is set. Is there something else that needs to be setup in order for this to work as expected or is my assumption about what that property is suppose to do completely wrong? In order to temporarily achieve the desired effect, I ended up subclasing NSArrayController and overriding the setSelectionIndexes: method to ignore index sets with a count of 0. However, this seems more like a work around than a solution. Cheers, Carmen ___ 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: Building iPhone application as backward compatible
Hi Mahamoob! There is no way! You should need to upgrade your iPhone OS. If this is not an error then may be possible that you used some 3.0 frameworks who not exist in 2.2. On Tue, Jul 28, 2009 at 3:24 PM, Mahaboob mahab...@newtok.com wrote: I developed an iPhone application using iPhone OS 3.0 and build it against iPhone OS 2.2. The application uses MessageUI.Framework It is tested in simulator 3.0. Then from simulator,I changed the Hardware version to 2.2 and is working fine. My iPhone is having the OS version 2.2. Now I need to test the application in iPhone without upgrading the OS. How can I do it ? When I'm debugging the application by selecting the Active SDK to iPhone Device 2.2, it yields a lots of errors. Thanks in advance Mahaboob ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/waqas.qureshi%40geniteam.com This email sent to waqas.qure...@geniteam.com -- Thanks Waqas Qureshi iPhone Application Specialist @ GenITeam Sol ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
How to drag file promises from IKImageBrowserView?
Hi!
I'm using IKImageBrowserView to display a collection files that reside
on Bluetooth devices. From the documentation, it looks like the only
method you have to override to support dragging is:
- (NSUInteger)imageBrowser:(IKImageBrowserView *)aBrowser
writeItemsAtIndexes:(NSIndexSet *)itemIndexes toPasteboard:
(NSPasteboard *)pasteboard
I can't seem to be able to get the Finder to accept file promises
placed on the dragging pasteboard from IKImageBrowserView. Here is my
code:
- (NSUInteger)imageBrowser:(IKImageBrowserView *)aBrowser
writeItemsAtIndexes:(NSIndexSet *)itemIndexes toPasteboard:
(NSPasteboard *)pasteboard {
NSArray *fileExtensions ... ; // Get extensions of the dragged files
[pasteboard declareTypes:[NSArray
arrayWithObject:NSFilesPromisePboardType] owner:self];
[pasteboard setPropertyList:fileExtensions
forType:NSFilesPromisePboardType];
return [fileExtensions count];
}
Is there any way to support the dragging of file promises from
IKImageBrowserView so I could later save the actual data to disk
asynchronously?
Thanks,
Matt
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Re: DragDrop to desktop - file icons layout problem
On 29 Jul 2009, at 21:24, I. Savant wrote: On Jul 29, 2009, at 4:16 PM, Alexander Bokovikov wrote: The question is, how could I assign icons location for dropped items? I believe, though didn't yet tested it, that similar problem will be with Finder window, when it is in icons mode. The only point where I could get such information (as I believe) could be tableView::namesOfPromisedFilesDroppedAtDestination: method, but it doesn't contain any information about icons location. I don't believe there is a (public API) way to set (or get) the location of an icon. The supported way is to use AppleScript (or to send equivalent Apple Events using some other method, e.g. the scripting bridge or AESend() et al.); Finder items have a position property that you can get/set. You used to be able to control this via the Finder information (using FSSetCatalogInfo()), but the Finder on OS X prefers its .DS_Store files. It is *claimed* that the OS X Finder will look at the Finder information if it doesn't know where something should go yet, but I never managed to get that to work in practice. Kind regards, Alastair. -- http://alastairs-place.net ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: UITextView not updating
I ended up having to do something similarly as bad for performance
-(void)viewDidScroll
{
NSString* placeHolder= myTextView.text;
myTextView.text =@;
myTextView.text =placeHolder;
}
can we say bumpy scroll.
Once I get a few other bugs worked out I'll redo this to trigger when
the scroll view's visible region and the textview frame are
intersecting.
On Jul 27, 2009, at 3:47 PM, Info wrote:
Hi,
I run into the same problem with an app for that I decided to set up
my view controllers / views as singletons (and therefore to reuse
them).
Views within a scroll view display their previous values if they
become a new value assigned when they are scrolled off (screen or
scroll view bounds - I can't tell).
A fix (very bad for performance) is to set up the view controller as
a delegate for the scroll view and to do somethings like this:
-(void) viewDidScroll {
myTextView.frame=myTextView.frame;
}
It's a bug in UIKit a I always wanted to file but didn't do...
Markus
On 27.07.2009, at 20:10, Development wrote:
I asked about this earlier and no one seemed the know the answer.
I have a UITextView inside of a scroll view. The textview is
offscreen when the main view loads. So it does not update when data
is loaded in to it. Thus when ever the scroll it is inside moves I
use a standard scrollview delegate method to detect the scroll.
Then execute the code below.
if(scrollView == miniScroll){
for (UIView *childView in onlinePeopleView.subviews)
{
[childView setNeedsDisplay];
}
}
This does not work. setNeedDisplay does not cause it to update and
display the text inside of the textview. What can I do to cause the
text to be displayed? Everything else is set up correctly in IB and
the text size is unaltered. So I know its none of that. If I
NSLog() the contents of the text view it shows that the textview is
infact imbued with the correct text it simply will not display. How
can I force a textview to update it's display?
Thanks
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Re: How to drag file promises from IKImageBrowserView?
On Jul 29, 2009, at 2:33 PM, Matt Rajca wrote: [pasteboard declareTypes:[NSArray arrayWithObject:NSFilesPromisePboardType] owner:self]; [pasteboard setPropertyList:fileExtensions forType:NSFilesPromisePboardType]; NSFilesPromisePboardType is a special pasteboard type that cannot be set up in this way. The only supported method of setting one up is to use the -dragPromisedFilesOfType:... method. See http://developer.apple.com/documentation/Cocoa/Conceptual/DragandDrop/Tasks/DraggingFiles.html#//apple_ref/doc/uid/20001288-102943 for details. Is there any way to support the dragging of file promises from IKImageBrowserView so I could later save the actual data to disk asynchronously? There might, if you subclassed IKImageBrowserView and completely rewrote the way it handled starting a drag. But other than that, no. Nick Zitzmann http://www.chronosnet.com/ ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: Fun (or not) with NSArrayControllers and CoreData.
On Jul 29, 2009, at 14:30, Daniel DeCovnick wrote: I'm sorry, you misunderstand. My NSManagedObject subclass Folder, not Job, has the allDescendantsJobs, and the NSTreeController/ NSOutlineView has all Folders where parent==nil as its root objects. There is a one Folder to many Jobs relationship. Folders and their children (and their children, etc.) show up in the outline view, and there's a table view of Jobs for the selected Folder (and, ideally, it's children). snipped... I don't think very much of that still applies given the misunderstanding above. Yeah, well, I think it all still applies. You have a tree-structured data model and you want to add to each non-leaf root node a property that's a to-many relationship to all its (directly or indirectly descended) leaf nodes. Yes? I may have had the class names wrong, but that's what I was talking about. Try this: -- Add an allDescendantJobs Core Data to-many relationship to the Folder entity in your Core Data model. Set its delete rule to Nullify. -- Add a rootFolder Core Data to-one relationship to the Job entity, and make it the inverse of allDescendantJobs. Set its delete rule to Nullify. -- Whenever you add a Job object to a Folder, also set the rootFolder property: addedJob.rootFolder = [parentFolder ... find its root folder recursively or whatever ...]; // this is KVO compliant for both ends of the relationship -- Bind a NSArrayController in entity mode to the allDescendantJobs property of whatever represents the selection in the Folders outline view. -- Bind the Jobs table view to this array controller. Now it should work. The only problem is going to be that the user interface may update for *each* Job object that's added/removed, which is less than optimal if you're updating a lot of them. And you're keeping an extra pair of relationships in the persistent store. If you need to avoid either of those things, you're going to have to work harder. ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: NSOpenPanel Exception/Bug
On Jul 28, 2009, at 11:24 PM, Kyle Sluder wrote: On Jul 28, 2009, at 11:12 PM, Seth Willits sli...@araelium.com wrote: Yes. It just fires off a task. Is there a particular reason you're doing this instead of using UTIs? UTIs are useless for determining what the actual content is if the extension (etc) isn't common. For example, a .cnfg text file is just public.data since no one claims it as text. /usr/bin/file will open the actual file and determine if it's text. That's why this code has various stages. After all else fails to identify the file as being text, the very last stage is to just open the file and look at it. I've yet to find a better method. [task waitUntilExit]; Doing this while displaying an open panel might not be a good idea, especially if it's waiting on the current runloop to fetch some information. Like perhaps network volumes shown in the sidebar. I think you're right on here (although I think it would still be an NSOpenPanel bug). I'd try doing the equivalent of waitUntilExit using a different runloop mode: I can see that this is likely the only spot for any potential trouble, but it'd be pretty stupid if it does. :\ At any rate, I've changed the code. I guess I'll just have to wait and see if I get any crash reports. -- Seth Willits ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Looking for a method to Lock and Unlock the computer
Hi all, I'm looking to write a program to run in the background and do the following: • Listen for Event A • If Event A occurs, either Sleep Display or Display Login Screen • Listen for Event B • If Event B occurs, log-in to a specific account Listening for the event is not a problem. However, what is a problem is logging in and displaying the login screen progmatically. My preference is to display the login screen, though simply sleeping the display would suffice if I cannot have the former. I'd appreciate any suggestions anyone might have. Thanks, Christopher___ 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: [moderator] Re: About Posting [ end of this thread ]
On Jul 29, 2009, at 5:43 PM, Scott Anguish wrote: With particular respect to Idiot Savant. Email can easily convolute nuance. While he posts with a screen-name rather than his real name, he knows his stuff. Sorry, Scott, to follow up on this thread, but I felt the need to correct this and relieve you of the need to decide whether to throw me under the bus as repayment for your kind words. ;-) Bluntly: I admit I brought this thread to Scott's attention for moderation. Because my policy-bluntness incites angry responses on a slightly-more-than-average basis, Scott naturally assumed I was involved. Normally, he'd have been right. (sigh) Such is my reputation ... :-D If you have a response (ie, You're right, you're an a**h***!), please do so off-list. -- I.S. ___ 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
[moderator] Re: [moderator] Re: About Posting [ end of this thread ]
Yes, an assumption on my part. but let's call this the end... we have code to write On 2009-07-29, at 6:56 PM, I. Savant wrote: On Jul 29, 2009, at 5:43 PM, Scott Anguish wrote: With particular respect to Idiot Savant. Email can easily convolute nuance. While he posts with a screen-name rather than his real name, he knows his stuff. Sorry, Scott, to follow up on this thread, but I felt the need to correct this and relieve you of the need to decide whether to throw me under the bus as repayment for your kind words. ;-) Bluntly: I admit I brought this thread to Scott's attention for moderation. Because my policy-bluntness incites angry responses on a slightly-more-than-average basis, Scott naturally assumed I was involved. Normally, he'd have been right. (sigh) Such is my reputation ... :-D If you have a response (ie, You're right, you're an a**h***!), please do so off-list. ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
adding PDF annotations to the output of a regular NSView
Hello Everyone, I have a regular NSView hierarchy that saves out to PDF just fine. It's wonderful that the drawing/printing system on OSX is unified the way it is. Here's the addition: I'd like to link parts of my NSViews together, eg: if the user opens the saved PDF in Preview.app, clicking in some special region will take them to another part of the same PDF. It looks like PDFKit has exactly something for this, PDFAnnotationLink. Unfortunately one can only apply such an object in the context of a PDFPage/PDFView. So the problem is that there doesn't seem to be any way of marrying these two systems together. Ideally there would be some Cocoa method I could call in my NSView's drawRect method to add PDF annotations. But the only solution I see is something like this: 1. Produce raw PDF data from my normal NSView hierarchy. 2. Load that NSView data into a PDFView. 3. Add PDFAnnotations to special regions as desired. 4. Resave the modified PDF data from the PDFView. This seems very inefficient and error prone (eg: mapping coordinates between NSView and PDF page space). Is this really the best option available? Thanks for any sanity checks on this. Cheers, ~Martin ___ 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
[NSEvent data1]
i'm building a 64bit app. in response to USB input, i create and post an application defined event. for the data1 field, i pass the address of an NSMutableDictionary as follows: ... data1: (NSInteger)dataDict ... in my application object's sendEvent override, i'm only getting (via [anEvent data1]) the bottom 32 bits of the address i passed in. the data1 method of NSEvent is defined to return an NSInteger, as is the data1 parameter of the NSEvent method otherEventWithType, and if i examining the value of data1 after i've created my custom event and posted it (but prior to receiving/processing it in sendEvent), it contains the proper 64 bit value. so it appears that somewhere between posting the event and its getting processed by [NSApp sendevent:] the parameter is getting truncated to 32 bits. is this a bug in the 64 bit runtime? or a bug in my understanding? and if not a misunderstanding on my part, anyone know of a workaround (other my simply decomposing the 64bit address manually into 2 32bit pieces and using data1 and data2)? thanx, ken ps. running on leopard 10.5.7, with Xcode 3.1.3. ___ 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: [NSEvent data1]
This is not a problem with your understanding, but a known problem on 10.5: 6361482 AppKit 64 bit truncation of data1 and data2 when posting a custom event For 10.5 splitting up the data is probably the best way to go Jesper Storm Bache On Jul 29, 2009, at 4:52 PM, kvic...@pobox.com wrote: i'm building a 64bit app. in response to USB input, i create and post an application defined event. for the data1 field, i pass the address of an NSMutableDictionary as follows: ... data1: (NSInteger)dataDict ... in my application object's sendEvent override, i'm only getting (via [anEvent data1]) the bottom 32 bits of the address i passed in. the data1 method of NSEvent is defined to return an NSInteger, as is the data1 parameter of the NSEvent method otherEventWithType, and if i examining the value of data1 after i've created my custom event and posted it (but prior to receiving/processing it in sendEvent), it contains the proper 64 bit value. so it appears that somewhere between posting the event and its getting processed by [NSApp sendevent:] the parameter is getting truncated to 32 bits. is this a bug in the 64 bit runtime? or a bug in my understanding? and if not a misunderstanding on my part, anyone know of a workaround (other my simply decomposing the 64bit address manually into 2 32bit pieces and using data1 and data2)? thanx, ken ps. running on leopard 10.5.7, with Xcode 3.1.3. ___ 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/jsbache%40adobe.com This email sent to jsba...@adobe.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: adding PDF annotations to the output of a regular NSView
On Jul 29, 2009, at 4:44 PM, Martin Wierschin wrote: So the problem is that there doesn't seem to be any way of marrying these two systems together. Ideally there would be some Cocoa method I could call in my NSView's drawRect method to add PDF annotations. But the only solution I see is something like this: 1. Produce raw PDF data from my normal NSView hierarchy. 2. Load that NSView data into a PDFView. 3. Add PDFAnnotations to special regions as desired. 4. Resave the modified PDF data from the PDFView. I'll start by pointing out that Step 2 is not necessary. Adding annotations in PDF Kit is done at the PDFDocument level. The PDFDocument you will have created from your raw PDF data (from Step 1). The PDFView is strictly for display purposes. As well then Step 4 more accurately would be re-save the modified PDFDocument as PDF data. This seems very inefficient and error prone (eg: mapping coordinates between NSView and PDF page space). Is this really the best option available? Mapping points from NSView to page space is not an issue. Since the PDF data came from your NSView to begin with you can use the same coordinates you used in the NSView. So for example if the special region was of some bounds (NSRect) in the NSView you can use this same rect to create your PDFAnnotation and add it in PDF Kit. But if you wanted a more straightforward model (and I understand that NSView-PDF data-PDFDocument is a bit of a kludge) you could replace your NSView with a subclass of PDFPage and display with a PDFView. It depends on your application though ... how much of a kludge this approach would be (you could simply be trading one kludge for another :-)). But in essence to do this a PDFView replaces the NSView and rather than overriding -[drawRect] as you might for NSView, you create a PDFPage subclass of your own and override the page's -[drawWithBox:] method as the place to draw your own content. You add your page to an empty PDFDocument and display this document in the PDFView. To be clear above, the PDFPage is not a view classes but does have a draw method that is called by PDFView to display the page content. For a PDF you find laying around, the default implementation of PDFPage is to call upon the PDF data to render the specified page. Your subclass allows you to draw whatever you like. The advantage to the above approach is that you can in fact add the PDFAnnotation prior to saving and have it actually function within your application (since PDFView will handle the mouseDown in the annotation). And then as well you get zoom controls and all that with the PDFView class But as I say, it sort of depends on your app. If your app is an appoinment calendar then writing it to live within a PDFView is a bit of a stretch. :-) John Calhoun— ___ 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: adding PDF annotations to the output of a regular NSView
Hi John, So the problem is that there doesn't seem to be any way of marrying these two systems together. Ideally there would be some Cocoa method I could call in my NSView's drawRect method to add PDF annotations. But the only solution I see is something like this: 1. Produce raw PDF data from my normal NSView hierarchy. 2. Load that NSView data into a PDFView. 3. Add PDFAnnotations to special regions as desired. 4. Resave the modified PDF data from the PDFView. I'll start by pointing out that Step 2 is not necessary. Adding annotations in PDF Kit is done at the PDFDocument level. The PDFDocument you will have created from your raw PDF data (from Step 1). The PDFView is strictly for display purposes. As well then Step 4 more accurately would be re-save the modified PDFDocument as PDF data. This seems very inefficient and error prone (eg: mapping coordinates between NSView and PDF page space). Is this really the best option available? Mapping points from NSView to page space is not an issue. Since the PDF data came from your NSView to begin with you can use the same coordinates you used in the NSView. So for example if the special region was of some bounds (NSRect) in the NSView you can use this same rect to create your PDFAnnotation and add it in PDF Kit. Thanks very much for your reply. I'm glad to known the process seemed more convoluted than it actually is. I am happily reassured by your advice. you could replace your NSView with a subclass of PDFPage and display with a PDFView. It depends on your application though ... how much of a kludge this approach would be (you could simply be trading one kludge for another :-)). Yeah, no thanks :P My view hierarchy is a large network of multi- container NSTextViews and other custom views nested/chained together. Slicing it up for PDFView consumption would be a real nightmare. Thanks again, ~Martin ___ 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
Binding collection view label through two entities
I've got a couple of entities, Foo and Bar. A Foo has a relation to a Bar. I've created a CollectionView that works well enough displaying a property of the Foos it lists, but can't seem to show the property of the associated Bars. It shows the same Bar property for each Foo it lists. The view has two text fields. The first is bound to the collectionview item's representedObject.text property (this is a Foo property). The other field is bound to the collectionview item's representedObject.bar.name property. This is the one that is the same for each of the different Foos. If I iterate the list of Foos in the code, and dump foo.bar.name, it does the right thing. Is this a problem in NSCollectionView (which is set up in IB)? Or am I doing something wrong elsewhere. Thanks! -- Rick ___ 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
NSUserDefault and Negative numerical arguments (Was: Posting mouse clicks with multiple displays)
When using NSUserDefaults to get command line arguments, it doesn't seem to handle negative numbers correctly. In main.m: NSUserDefaults *args = [NSUserDefaults standardUserDefaults]; int x = [args integerForKey:@x]; int y = [args integerForKey:@y]; If the command line is MyApp -x -100 -y 100, NSUserDefaults does not recognize the -100 as the value of the x argument - it sets x to 0. If the '-' is removed, everything is fine. Is this a bug? Is there a way around? Thanks again! Sean DeNigris s...@clipperadams.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: where can I download xcode 3.2
Thanks everybody. I have found it. On Thu, Jul 30, 2009 at 4:17 AM, Henry McGilton (Boulevardier) appledevelo...@trilithon.com wrote: On Jul 28, 2009, at 12:22 AM, Kyle Sluder wrote: On Jul 27, 2009, at 10:38 AM, YongLi liyon...@gmail.com wrote: I have installed the snow leopardbut i can't find the download link of xcode 3.2 1. This is cocoa-dev. This list exists for the discussion of Cocoa, not for downloading seeds or other non-Cocoa topics. 2. Snow Leopard and the developer tools are distributed under NDA and you therefore can't talk about them publicly. NDA forums can be found at http://devforums.apple.com. 3. All the downloads are in the same place: the Mac dev center at http://developer.apple.com. True, all the downloads are in the same place as you said.However, the answer to the OP's question can be found by carefully paying attention to the (publicly available PDF document) on that very download site iPhone SDK 3.0 (Snow Leopard) Read Me Cheers, . . . . . . . .Henry ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/liyong03%40gmail.com This email sent to liyon...@gmail.com -- Name: Yong Li E-mail: liyon...@gmail.com Address: Room 3-523, FIT Building, Tsinghua University, Beijing, China. 100084. ___ 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
Binding to an array of NSStrings stored in an application's preferences
OK, I'm feeling really REALLY stupid for asking this question, but I've managed to stump myself so hard that I doubt I have the proper detachment to figure out the answer for myself any more. My apologies in advance... I have been playing around with bindings for a while now and LOVE them. That and the KVO/KVC conventions built into Objective-C 2.0 have allowed me to dramatically slim down my applications while increasing their reliability, flexibility, etc. I say this for no other reason than to illustrate that I am at least moderately comfortable with bindings in general. That being said, my problem is this: I have an application where I'd like to store an editable set of keywords by way of the preferences controller. Easy, right? Unfortunately, for the life of me I can't figure out how to do it. I set up an array controller and point it to the shared preferences object and give it a keypath for the array. The problem is that the objects being stored in the array are NSStrings and I don't see how NSStrings can be KVC-compliant for this kind of operation due to the lack of any stringValue/setStringValue methods. Without those, what keypath do I use in the NSTableView I have set up to facilitate manipulation of that list? Also, since the shared preferences object is not one that I own, I'm not sure how to go about setting up a new array to represent an unedited/newly installed state. (Registering them as defaults doesn't seem to be working for me.) So to reiterate my questions more succinctly: How can you bind a table view to an array of NSStrings and how can you store said array in an application's preferences? Any pointers or advice that you can offer would be VERY much appreciated. The headaches I'm getting from this are starting to get the better of me. :) ___ 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
Listening to Eject command
Hi Everyone, For some reasons, I need to customize (or listen to) Eject command. I want this to happen before system actually do something with the device i.e eject disc or shows up some error. I want to perform some operation on disc before system ejects it. I tried to do it using DRNotificationCenter but that sends notification when the disc has already been ejected. Any help would be highly appreciated. Farooq Zaman- ___ 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: Binding to an array of NSStrings stored in an application's preferences
On 30/07/2009, at 8:15 AM, A B wrote: Without those, what keypath do I use in the NSTableView I have set up to facilitate manipulation of that list? I'm not sure I've fully followed your question, since I'm not as up with bindings as you are, but I'm just wondering: have you overlooked the fact that @self is a valid keypath or keypath component? If the array holds strings and you are binding to the string itself, its value is self. I hope I haven't misunderstood... --Graham ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: Listening to Eject command
I believe you can use even taps for this. Check out: http://developer.apple.com/documentation/Carbon/Reference/QuartzEventServicesRef/Reference/reference.html#//apple_ref/c/func/CGEventTapCreate ___ 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: NSUserDefault and Negative numerical arguments (Was: Posting mouse clicks with multiple displays)
On Jul 29, 2009, at 8:22 PM, Bill Bumgarner wrote: On Jul 29, 2009, at 7:09 PM, DeNigris Sean wrote: When using NSUserDefaults to get command line arguments, it doesn't seem to handle negative numbers correctly. In main.m: NSUserDefaults *args = [NSUserDefaults standardUserDefaults]; int x = [args integerForKey:@x]; int y = [args integerForKey:@y]; If the command line is MyApp -x -100 -y 100, NSUserDefaults does not recognize the -100 as the value of the x argument - it sets x to 0. If the '-' is removed, everything is fine. Is this a bug? Is there a way around? Yes-- -100 is parsed as an argument, not as a value to the previous argument. So, no, it isn't a bug. It is behaving correctly, for some values of correct. Welcome to shell programming the interface between shell process. Fragile space. Coder beware. If you are writing a command line tool, you'll want to use a parsing API that actually lets you specify arguments more completely. man 3 getopt That'll give you a start. But I'd recommend Dave Dribin's DDCLI stuff; http://www.dribin.org/dave/blog/archives/2008/04/29/ddcli/ If this is a Cocoa application, you'll want to do the command line parsing *before* NSApplicationMain() is called as it'll munch the arguments beyond recovery IIRC. b.bum ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
UIWebView: prevent from displaying menu, Copy.
Hi, I'd like to prevent UIWebView from selecting an area and showing the Copy menu item. I tried subclassing it and implementing touchesEnded:withEvent:. But since I don't know if double-tap is the exact way to show the menu, I'm not sure if I omit the event using the topped count. Furthermore, even if I placed a breakpoint at the beginning of the method, Debugger doesn't stop there. For your info, the subclass has becomeFirstResponder method, and it is to return YES. Any suggestions would be very appreciated. Best regards, Norio ___ 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: Binding to an array of NSStrings stored in an application's preferences
On 30/07/2009, at 8:15 AM, A B wrote: I have an application where I'd like to store an editable set of keywords by way of the preferences controller. Easy, right? Unfortunately, for the life of me I can't figure out how to do it. I set up an array controller and point it to the shared preferences object and give it a keypath for the array. The problem is that the objects being stored in the array are NSStrings and I don't see how NSStrings can be KVC-compliant for this kind of operation due to the lack of any stringValue/setStringValue methods. Without those, what keypath do I use in the NSTableView I have set up to facilitate manipulation of that list? Also, since the shared preferences object is not one that I own, I'm not sure how to go about setting up a new array to represent an unedited/newly installed state. (Registering them as defaults doesn't seem to be working for me.) You can't do this with an array of NSStrings, you have to work with strings encapsulated as properties of an object, such as an NSDictionary. So you need an array of dictionaries which contain a string object for a particular key. Something like: NSArray* prefs = [NSArray arrayWithObjects: [NSMutableDictionary dictionaryWithObject:@One forKey:@name], [NSMutableDictionary dictionaryWithObject:@Two forKey:@name], [NSMutableDictionary dictionaryWithObject:@Three forKey:@name], nil]; NSDictionary* defaults = [NSDictionary dictionaryWithObject:prefs forKey:@MyDefaults]; [[NSUserDefaults standardUserDefaults] registerDefaults:defaults]; Then you can do this: - instantiate an NSArrayController in your nib and set its Class Name field to NSMutableDictionary (the default). - bind it to the Shared User Defaults Controller with a Controller Key of values and a Model Key that is the preferences key you want to store/edit (MyDefaults in the example above). - make sure you check the Handles content as a compound value checkbox or editing will not work. - bind the value of the table column to your NSArrayController's arrangedObjects key with a Model Key of name or whatever you set up in your dictionary. -- Rob Keniger ___ 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: Binding to an array of NSStrings stored in an application's preferences
On Jul 29, 2009, at 19:58, Graham Cox wrote: I'm not sure I've fully followed your question, since I'm not as up with bindings as you are, but I'm just wondering: have you overlooked the fact that @self is a valid keypath or keypath component? If the array holds strings and you are binding to the string itself, its value is self. I hope I haven't misunderstood... You're correct as far as getting the strings is concerned, but unfortunately self won't work for changing the string value, which the OP also asked for. Weirdly, NSMutableString has a setString: instance method, so I think if you add a string instance method to NSString (via a category, with the method just returning self), you end up with a valid string property which can be bound to. :) I *think* I actually tried that once and it worked. But it's more of a curiosity than anything else: 1. It's likely in the OP's case that actually changing one of the strings ought to ripple through to all the objects that have a matching string value. It's unlikely that just changing the defaults- resident string is enough. 2. It's almost as easy to wrap a string in an object with a string property. Putting those 2 reasons together, I think about 5 minutes after getting the string-binding thing working you'd end up using a smarter object anyway. ___ 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: UIWebView: prevent from displaying menu, Copy.
Go to devforums.apple.com/community/iphone and search there - this has been discussed, with solutions, there... Sent from my iPhone On Jul 29, 2009, at 10:35 PM, norio ota notty@gmail.com wrote: Hi, I'd like to prevent UIWebView from selecting an area and showing the Copy menu item. I tried subclassing it and implementing touchesEnded:withEvent:. But since I don't know if double-tap is the exact way to show the menu, I'm not sure if I omit the event using the topped count. Furthermore, even if I placed a breakpoint at the beginning of the method, Debugger doesn't stop there. For your info, the subclass has becomeFirstResponder method, and it is to return YES. Any suggestions would be very appreciated. Best regards, Norio ___ 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/gandreas%40mac.com This email sent to gandr...@mac.com ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: Listening to Eject command
On Jul 29, 2009, at 9:12 PM, Farooq zaman wrote: For some reasons, I need to customize (or listen to) Eject command. I want this to happen before system actually do something with the device i.e eject disc or shows up some error. I want to perform some operation on disc before system ejects it. I tried to do it using DRNotificationCenter but that sends notification when the disc has already been ejected. DR is for DiscRecording, you want DA for DiskArbitration. Specifically, either DARegisterDiskUnmountApprovalCallback() or DARegisterDiskEjectApprovalCallback(). -Ed smime.p7s Description: S/MIME cryptographic signature ___ 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: Cahnging bgColor of a UIView not working.
On Jul 29, 2009, at 11:27 AM, Eric E. Dolecki wrote: This is good to use: #define UIColorFromRGB(rgbValue) [UIColor \ colorWithRed:((float) ((rgbValue 0xFF) 16))/255.0 \ green:((float)((rgbValue 0xFF00) 8))/255.0 \ blue:((float)(rgbValue 0xFF))/255.0 alpha:1.0] cell.textColor = UIColorFromRGB(0x33); On Wed, Jul 29, 2009 at 1:04 PM, Brian Slick briansl...@mac.com wrote: On Jul 29, 2009, at 12:56 PM, David Duncan wrote: On Jul 29, 2009, at 4:52 AM, Brandon Walkin wrote: The arguments to that UIColor method should be in the range of 0 to 1. Divide each RGB value by 255 to get them into that range. This is more of a PSA than anything (because I've seen more than a fair share of devs slap themselves on the head here too): Always ensure your using floating point division if your going to do this. That means always dividing by 255.0. I've seen too many people asking why do I always get black and pointed out because you forgot the .0 :). -- David Duncan Apple DTS Animation and Printing *jaw dropping* Well, I guess that explains that. I finally just gave up and did the math myself. Good tip, thanks! Brian What I've always wondered in this particular context of our color component specifications ranging from 0.0 to 1.0 is why the System RGB color chooser displays the component values in the range 0 to 255? You'd think by now there'd be a 'Developer Friendly' version of the chooser . . . Cheers, . . . . . . . .Henry ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
