Hi List,
I'm attempting to create a bunch of png or jpg images based on user-set
options.
I'm getting images with a lot of noise in them, I was wondering if
anyone has any ideas why this would be? I've attached a screenshot of
the noisy images I've been getting. The shot is of four images
On 09/11/2009, at 3:53 AM, Jay Swartzfeger wrote:
Hi all, I'm an absolute beginner to Objective-C (and programming in
general). I have lots of books on order, but I've been messing with
Xcode/Cocoa/iPhone SDK with online resources while I wait.
My question -- for my next project, I want to do
On 09/11/2009, at 9:01 PM, Ron Fleckner wrote:
void to_binary(int n)
{
int r;
r = n % 2;
if (n = 2)
to_binary(n / 2);
putchar('0' + r);
return;
}
The above sledgehammer-hammer-ammer-mmer-mer-er is not required to
crack such a nut:
The approach found by Ron prints the bits in correct order. The
suggested replacement prints them backwards. Other correct solutions
can be done without recursion, but require a char buffer that must
either be reversed or printed in reverse order.
Tom Wetmore
On Nov 9, 2009, at 5:27 AM,
Won't this output the digits in reverse order?
--Andy
On Nov 9, 2009, at 5:27 AM, Graham Cox graham@bigpond.com wrote:
On 09/11/2009, at 9:01 PM, Ron Fleckner wrote:
void to_binary(int n)
{
int r;
r = n % 2;
if (n = 2)
to_binary(n / 2);
putchar('0' +
On 09/11/2009, at 9:49 PM, Andy Lee wrote:
Won't this output the digits in reverse order?
Yes it will, but as I mentioned in an off-list message, the use of
putchar is probably not very useful for a real-world implementation
either, so you can compensate for the order when accumulating
Hi,
Yes my Document class releases the array in its dealloc method and all Node
objects in the array are properly dealloc'ed when deallocing the document.
However, I think the problem is unrelated to the retaining of the array
member of the document class but rather to the retaining of elements
On 09/11/2009, at 10:31 PM, Mads Paulin wrote:
Adding a node object through this method creates a node object in the
document array member with a retain count of 2. The remove:sender
method
correctly removes the object from the document's array but only
decrements
the node object's retain
On 09/11/2009, at 7:28 PM, Michael Robinson wrote:
I'm getting images with a lot of noise in them, I was wondering if
anyone has any ideas why this would be? I've attached a screenshot of
the noisy images I've been getting. The shot is of four images that
well shouldn't have any noise
On 9 Nov 2009, at 10:49, Thomas Wetmore wrote:
The approach found by Ron prints the bits in correct order. The
suggested replacement prints them backwards. Other correct solutions
can be done without recursion, but require a char buffer that must
either be reversed or printed in reverse
On Nov 9, 2009, at 6:31 AM, Mads Paulin wrote:
Hi,
Yes my Document class releases the array in its dealloc method and
all Node
objects in the array are properly dealloc'ed when deallocing the
document.
However, I think the problem is unrelated to the retaining of the
array
member of the
On 09/11/2009, at 10:55 PM, Alastair Houghton wrote:
It's pretty easy to do a bit count on a fixed-size word (no need for
a loop, in fact).
There are some examples of how to do this here, including some really,
really clever methods. Is this what you had in mind Alastair?
Hi Andy,
Thank you for your input.
I did actually try to exchange the OutlineView with a TableView and the
TreeController with an ArrayController and the problem went away meaning
that all elements in the collection was correctly dealloced when calling
remove:sender on the controller.
What
On Nov 9, 2009, at 8:16 AM, Mads Paulin wrote:
What strikes me as odd is that all Nodes in the document array are
created
and removed directly via the add and remove actions on the
treecontroller.
- I dont have a single external access to these objects. I would
hence
expect the controller
On Mon, Nov 9, 2009 at 7:08 AM, Graham Cox graham@bigpond.com wrote:
There are some examples of how to do this here, including some really,
really clever methods. Is this what you had in mind Alastair?
http://gurmeetsingh.wordpress.com/2008/08/05/fast-bit-counting-routines/
--Graham
On 9 Nov 2009, at 12:08, Graham Cox wrote:
On 09/11/2009, at 10:55 PM, Alastair Houghton wrote:
It's pretty easy to do a bit count on a fixed-size word (no need
for a loop, in fact).
There are some examples of how to do this here, including some
really, really clever methods. Is this
On Mon, Nov 9, 2009 at 9:52 AM, Alastair Houghton
alast...@alastairs-place.net wrote:
Anyway, there are lots of neat tricks of this nature.
(All of this probably isn't for newbie C programmers, though it's perfectly
possible that a newbie ObjC programmer might not be new to C or C++.)
Where
On Nov 9, 2009, at 9:55 AM, Jay Swartzfeger wrote:
On Mon, Nov 9, 2009 at 9:52 AM, Alastair Houghton
alast...@alastairs-place.net wrote:
Anyway, there are lots of neat tricks of this nature.
(All of this probably isn't for newbie C programmers, though it's
perfectly
possible that a newbie
There is no need to reload the table. If you simply change the
UIImageVIew that the image is assigned to, that will refresh. So
you're using a very heavy handed method right now which isn't even
needed.
Second, if you simply store into your NSOperation-derived subclass the
tag of each
Thanks all for your help-
I wasn't clear enough, I agree, and sorry about that, but there was a
hint hidden in my text:
(I'm going to have categories to handle drawing, material takeoff,
pricing, etc for each door type).
We manufacture entrances (and many doors). The users of this app
On Nov 8, 2009, at 8:35 PM, John Michael Zorko wrote:
I have an indexed table view with -- surprise -- images that take a
long time to load. So, I put the loading into an NSOperation-derived
subclass and have the main() method send a refresh msg to my main
thread, telling it to reload the
These functions return how many one bits there are in a number, not
how many bit positions are needed to represent the number as a bit-
string with no leading zeros. They are fun but have no utility in
solving the OP's question.
TW
There are some examples of how to do this here, including
On Nov 7, 2009, at 7:49 PM, Todd Heberlein wrote:
Yeah, one of the concerns I had was whether the selected NSRange is
preserved when -string is called.
I've always assumed it is. That is, all character indexes that appear
in the NSText[View] API correspond to character positions in the
I'm looking for some pointers to information on creating dialog boxes
with content (# and type of controls) determined at runtime.
All that I really know ahead of time is that there will be a dialog box
to gather some data, and that the UI objects in the dialog come from a
small, well defined
Please remember that gethostuuid() has all the same caveats mentioned
in TN1103.
.chris
On 8 Nov 2009, at 3:13 PM, Grigutis, John A wrote:
Also look at gethostuuid:
int gethostuuid(uuid_t id, const struct timespec *wait)
I don't think it was around when that technote was last updated.
--
On Mon, Nov 9, 2009 at 9:10 AM, Kevin Brock ap...@kevin.com wrote:
I'm pretty sure that I could just do it programmatically, creating and
laying things out on the fly, but I'm hoping there's a simpler way. Most of
the application is standard windows in a nib file.
You could take the
Hi,
I would like to create a small timer. Basically, the timer sits in a
view. When the view is shown, the timer should start, and when the
view is hidden / closed, the timer should stop. While the view is
visible, the user should be able to access controls / manipulate
values inside the view.
I offer the following as a Cocoa solution to the OP's query,
whatever that might be taken to mean...
(For extra credit: why must the parameter be unsigned?)
Tom Wetmore
NSString* binaryRepresentation (NSUInteger number)
{
unichar buffer[64];
NSUInteger n = 0;
while
Hi everyone,
I want to use the NSLocalizedStringWithDefaultValue macro in my code
(so I can see the proper strings in the UI as I debug), but it's
awfully verbose. For example:
NSLocalizedStringWithDefaultValue(@LibraryFolderTitle, (nil),
[NSBundle mainBundle], @Library, @Library folder
Kyle Sluder wrote:
On Mon, Nov 9, 2009 at 9:10 AM, Kevin Brock ap...@kevin.com wrote:
I'm pretty sure that I could just do it programmatically, creating and
laying things out on the fly, but I'm hoping there's a simpler way. Most of
the application is standard windows in a nib file.
On 9 Nov 2009, at 16:42, Thomas Wetmore wrote:
These functions return how many one bits there are in a number, not
how many bit positions are needed to represent the number as a bit-
string with no leading zeros. They are fun but have no utility in
solving the OP's question.
Not true.
On Nov 9, 2009, at 9:02 AM, Jens Alfke wrote:
On Nov 7, 2009, at 7:49 PM, Todd Heberlein wrote:
Yeah, one of the concerns I had was whether the selected NSRange is
preserved when -string is called.
I've always assumed it is. That is, all character indexes that
appear in the NSText[View]
On 9 Nov 2009, at 17:20, Thomas Wetmore wrote:
I offer the following as a Cocoa solution to the OP's query,
whatever that might be taken to mean...
(For extra credit: why must the parameter be unsigned?)
Tom Wetmore
NSString* binaryRepresentation (NSUInteger number)
{
unichar
On Nov 9, 2009, at 10:19 AM, Michael Abendroth wrote:
How can I create such a timer? I mean, it probably isn't very
efficient to redraw the whole view every second just to get the timer
to update.
Then don't. When it comes time to draw the change, make it so that it
only redraws the part
On Mon, Nov 9, 2009 at 9:28 AM, Douglas Davidson ddavi...@apple.com wrote:
Yes, that's correct. Within a given text view, the character indexes are
the same between the text storage and its underlying string, and these are
the character indexes used by the layout manager and the text view.
On Nov 9, 2009, at 9:37 AM, Kyle Sluder wrote:
On Mon, Nov 9, 2009 at 9:28 AM, Douglas Davidson
ddavi...@apple.com wrote:
Yes, that's correct. Within a given text view, the character
indexes are
the same between the text storage and its underlying string, and
these are
the character
one thing i've always had an issue with is sound lag, which always
(yet only) happens during a first sound. after the initial lag,
sounds will play on time. at first i though it was my code, but
recently i've noticed that it happens in Calculator.
if you open Calculator, then choose Speech
Hi,
What I initally did was exactly to log from the dealloc method of my
node class. Experiencing that it never got called, I started to log
from retain and release to try to get deeper into the problem.
I stumbled on the problem when integrating some C++ code into my cocoa
project.
Hi All,
I know that one can add a new right specification to the policy
database via the function AuthorizationRightSet. Is there any
functions or APIs for adding new rule specifications?
I want to create a new group - and allow only members of that group to
access parts of my
Yes, yours is much nicer.
TW
On Nov 9, 2009, at 12:32 PM, Alastair Houghton wrote:
On 9 Nov 2009, at 17:20, Thomas Wetmore wrote:
I offer the following as a Cocoa solution to the OP's query,
whatever that might be taken to mean...
(For extra credit: why must the parameter be unsigned?)
You can use the -s flag to genstrings to tell it to use your own prefix
instead of NSLocalizedString. For example, passing -s MyString would
catch calls to MyString(), MyStringFromTable(), MyStringWithDefaultValue(),
etc. However, these functions must take the same arguments as the default
How do you insert an object into a managed object context with undo
disabled?
I have objects that are added to a new document that need to be there
but should not make the document dirty or be undoable by the user.
Richard
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humm... i'm running 10.5.8 on 2008 iMac C2D, but i never though it
could have been the computer. would like to hear from others.
On Mon, Nov 9, 2009 at 1:18 PM, Klaus Backert klaus.back...@t-online.de wrote:
On 9 Nov 2009, at 18:58, Chunk 1978 wrote:
one thing i've always had an issue with
On Mon, Nov 9, 2009 at 10:25 AM, Chunk 1978 chunk1...@gmail.com wrote:
humm... i'm running 10.5.8 on 2008 iMac C2D, but i never though it
could have been the computer. would like to hear from others.
What sound API are you using?
-Shawn
___
i'm using Cocoa's NSSound. here's is how i play sounds:
-=-=-=-=-
if ([[soundRadioGroup cellWithTag:1] state] == NSOnState)
{
NSSound *theSound = [NSSound soundNamed:@mySound.m4a];
if ([theSound isPlaying])
[theSound stop];
[theSound play];
}
-=-=-=-=-
the first sound is always
That makes sense, because NSSound has to go find the resource named
mySound.m4a, load it into memory, and then play it.
Have you tried preloading the sound, so that by the time you want to
play it, it's already in memory?
Dave
On Nov 9, 2009, at 11:37 AM, Chunk 1978 wrote:
i'm using
also, i tried implementing a dummy sound (dead air .m4a file) during
application launch, but that didn't help. the first real sound is still
always lagged.
On Mon, Nov 9, 2009 at 1:37 PM, Chunk 1978 chunk1...@gmail.com wrote:
i'm using Cocoa's NSSound. here's is how i play sounds:
-=-=-=-=-
On 9 Nov 2009, at 19:25, Chunk 1978 wrote:
humm... i'm running 10.5.8 on 2008 iMac C2D, but i never though it
could have been the computer. would like to hear from others.
Did you check whether there are certain special processes running on
your machine?
Klaus
[[managedObjectContext undoManager] disableUndoRegistration];
-BJ
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On Mon, Nov 9, 2009 at 10:20 AM, Richard Somers
rsomers.li...@infowest.com wrote:
How do you insert an object into a managed object context with undo
disabled?
The NSPersistentDocument Core Data tutorial tells you exactly how to
do it:
On Mon, 2009/11/09, Alastair Houghton alast...@alastairs-place.net wrote:
From: Alastair Houghton alast...@alastairs-place.net
Subject: Re: beginner question, NSNumber, NSDecimalAsNumber
To: Thomas Wetmore t...@verizon.net
Cc: list-cocoa-dev List cocoa-dev@lists.apple.com
Date: Monday, 2009
On 11/9/09 12:58 PM, Chunk 1978 said:
one thing i've always had an issue with is sound lag, which always
(yet only) happens during a first sound. after the initial lag,
sounds will play on time. at first i though it was my code, but
recently i've noticed that it happens in Calculator.
if you
On Nov 9, 2009, at 9:19 AM, Michael Abendroth wrote:
How can I create such a timer? I mean, it probably isn't very
efficient to redraw the whole view every second just to get the timer
to update.
Drawing a view once a second shouldn't be a problem. Look at all the
stuff iTunes' pseudo-LCD
On Mon, Nov 9, 2009 at 9:50 AM, Douglas Davidson ddavi...@apple.com wrote:
Please do.
Filed as 7377361.
--Kyle Sluder
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Contact
On Nov 8, 2009, at 12:11 PM, Stuart Malin wrote:
But I suspect that from the posters comments in the post I reference
below, it isn't a bug. The problem is, you can't return up the
calling chain while being synchronized. Do whatever work it is that
needs to be performed in a synchronized
On Nov 8, 2009, at 2:17 AM, Roland King wrote:
Or look at NSOperation/NSOperationQueue which absolves you of the
need to care about threads, it's done for you (and I believe makes
use of Grand Central Dispatch on current versions of OSX). Just
package up whatever it is you need to do and
i dont' believe there are any special processes running, but this iMac has
always had issues since i got it. i've had it fixed 3 times for problems
concerning the screen and video card, it's broken again so i'm scheduled to
have it entirely replaced. perhaps there are some other underlying
On 11/9/09 10:50 AM, Jens Alfke said:
I ran into this too. A decent workaround is to preload the sound:
create an NSSound object for the audio file you want to play, set its
volume to zero, then play it. After that it's warmed up and will
play instantly.
I just tried this, and it seems to work
I ran into this too. A decent workaround is to preload the sound:
create an NSSound object for the audio file you want to play, set its
volume to zero, then play it. After that it's warmed up and will
play instantly.
(Actually not entirely instantly on laptops, which will turn off the
Hi all,
My app's UI was swapping views into a NSBox (a la Hillegass's book). Now I
decided to replace the NSBox with a NSScrollView. No big difference there. I
only made three changes: In IB, I got rid of the NSBox and dropped a
NSScrollView in its place. In my document controller class, I
Dave, Alex ...
An alternative implementation might be to have each cell queue up an
operation when it needs to load an image (not the view controller).
Then, each cell could cancel it's operation in [UITableViewCell
prepareForReuse].
Cool -- I learned something today :-) I did this,
My Entry objects are an NSManagedObject subclass.
I create an NSArray of N Entries and add them to my array controller
like so.
[self.arrayController addObjects:newEntries];
I am observing [self.arrayController arrangedObjects] and receive a
single observation following the above call.
Hi
I am finding it difficult to find previous sampe codes in apple site. How
can I find sample code for Editable Detail View
Kind Regards,
Tharindu Madushanka
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On Nov 9, 2009, at 11:46 AM, BJ Homer wrote:
[[managedObjectContext undoManager] disableUndoRegistration];
Thank you.
On Nov 9, 2009, at 11:49 AM, Kyle Sluder wrote:
The NSPersistentDocument Core Data tutorial tells you exactly how to
do it:
Hi all,
In the MVC style, I want to avoid connecting directly between a view and a
model. However I have a custom NSView subclass that renders a graphical view of
the model and therefore it needs information from the model. I think it is
considered bad practice to put a pointer to the model
Oftenwrong Soong wrote:
Hi all,
In the MVC style, I want to avoid connecting directly between a view
and a model. However I have a custom NSView subclass that renders a
graphical view of the model and therefore it needs information from
the model. I think it is considered bad practice to put
On Nov 9, 2009, at 3:04 PM, Oftenwrong Soong wrote:
In the MVC style, I want to avoid connecting directly between a view
and a model. However I have a custom NSView subclass that renders a
graphical view of the model and therefore it needs information from
the model. I think it is
On 10/11/2009, at 7:10 AM, Oftenwrong Soong wrote:
Unfortunately each time I swap a view, the vertical scrollbar goes
all the way to the bottom, meaning that I have to manually scroll
back up to bring the view into view.
What did I do wrong?
Nothing, as far as I can see. But
On 10/11/2009, at 8:04 AM, Oftenwrong Soong wrote:
In the MVC style, I want to avoid connecting directly between a view and a
model. However I have a custom NSView subclass that renders a graphical view
of the model and therefore it needs information from the model. I think it is
so, is there some other lightweight 3rd party framework that could
substitute for cocoa's NSSound?
On Mon, Nov 9, 2009 at 2:40 PM, lbland lbl...@vvi.com wrote:
hi-
On Nov 9, 2009, at 12:58 PM, Chunk 1978 wrote:
one thing i've always had an issue with is sound lag, which always
(yet only)
On 11/9/09 6:25 PM, Chunk 1978 said:
so, is there some other lightweight 3rd party framework that could
substitute for cocoa's NSSound?
Did you try the workaround Jens and I suggested? Did you look at
CoreAudio, as I also suggested? There's also:
Dave Mark and Jeff LaMarche wrote a pretty awesome book called
Beginning iPhone Development which covers editable detail views.
def check out the book. you can download source code on the product's
website, but you have to register with the forums to do so. the book
is really great, though. you
thanks. haven't had time to test the workaround yet. i'll check out coreaudio.
On Mon, Nov 9, 2009 at 6:32 PM, Sean McBride s...@rogue-research.com wrote:
On 11/9/09 6:25 PM, Chunk 1978 said:
so, is there some other lightweight 3rd party framework that could
substitute for cocoa's NSSound?
On Nov 9, 2009, at 3:35 PM, Chunk 1978 wrote:
thanks. haven't had time to test the workaround yet. i'll check
out coreaudio.
You really don't want to get into CoreAudio unless you're planning on
doing some serious audio work. The APIs are low-level and complex and
will take quite a
i've also only read about the complexity of OpenAL, which i assume is
even more low level in the sense that CoreAudio to OpenAL it's
anologous to CoreAnimation to OpenGL.
regardless, is this NSSound lag a filed bug? it's seems really
unfortunate that there is a 1-second lag in loading/executing
On 09/11/2009, at 5:03 PM, Martin Hewitson wrote:
Thanks, Rob. I do have this book, but I sort of skipped the section about
multithreading (where the export example is buried), but I've found it now.
Yes, it's kind of a shame that it's buried in there. I initially skipped it too.
In my
On Nov 9, 2009, at 4:43 PM, Chunk 1978 wrote:
i've also only read about the complexity of OpenAL, which i assume is
even more low level in the sense that CoreAudio to OpenAL it's
anologous to CoreAnimation to OpenGL.
Not really; it might even be the other way around. OpenAL is a cross-
On Mon, 9 Nov 2009 14:16:14 -0500, Sean McBride s...@rogue-research.com
said:
On 11/9/09 10:50 AM, Jens Alfke said:
I ran into this too. A decent workaround is to preload the sound:
create an NSSound object for the audio file you want to play, set its
volume to zero, then play it. After that it's
Hi all,
I may be way off but in my iPhone game I used SystemSoundID and
AudioServicesCreateSystemSoundID I am not sure if that is helpful at
all but it did not seem to have a delay but it does not support many
formats either. So if you are happy to convert your format this may
be an
On 9 Nov 2009, at 10:49, Jeffrey Oleander wrote:
Last I looked, 1-bit count was an assembly/
hardware instruction. Getting the highest
order on-bit required a little cleverness.
Take a look at __builtin_clz(). (It maps to 'bsr' on x86.)
___
I want to swap out one view with another by pushing the old view aside
to slide in a new view (the kCATransitionPush type). To use
CoreAnimation I need to work with CALayers for my views. The problem
is that attaching a backing layer to my window content view through
setWantsLayer distorts
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