Model your spread sheet on a (hypothetical 2-D)TableView. Maintain a pool of
cells starting with enough to cover the view at the default size plus a bit of
margin. As cells scroll off the view return them to the pool; as you need new
ones get them from the pool. If the pool is empty you alloc
NSData *source = // whatever
NSRange myRange = // whatever
NSData *subrangeOfSource = [source subdataWithRange: myRange];
On May 18, 2013, at 3:00 PM, cocoa-dev-requ...@lists.apple.com wrote:
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> The issue being worked-around is that of the compiler; during
> optimization, if you stop referencing myData,
[snip]
Yes. As I said, I understand the issue - my only question was whether the
short-circuited retain was enough to do it. I didn't know whether the compiler
did this or the runtime
The garbage collection docs section on the interior pointer issue shows this
example:
NSData *myData = [someObject getMyData];
[myData retain];
const uint8_t *bytes = [myData bytes];
NSUInteger offset = 0, length = [myData length];
while (offset < length) {
// bytes remains valid until next
Cocoa has problems with CMYK jpegs. Going from Tiger to Leopard it
became ambivalent about whether a CMYK pixel value of 0, 0, 0, 0 meant
black or white. (I remember reading somewhere that there is an
ambiguity in the jpeg standard.)
You can see this with Preview. Get yourself a CMYK tiff
Hi Ken -
> This all worked fine until 10.6. The original NSImage object was
left unmolested.
Nope. :-) Clearly you're seeing behavior change somewhere, but this
attribution is not correct.
-[NSImage lockFocus] is a commonly misunderstood method. It is and
always has been lossy.
No
I have this piece of code in my drawing program:
[image lockFocus];
NSBitmapImageRep* bitmapRep =
[[NSBitmapImageRep alloc] initWithFocusedViewRect:
NSMakeRect( 0.0, 0.0, width, height) ];
[image unlockFocus];
image is an NSImage with a single representation, either
It seems to be a more general bug with runModalForWindow: If anything
grabs the focus while the app is starting (i.e. something that would
require you click on the dock icon to get the app back - which the
warning does) the modal window never becomes visible.
I can see the same thing by st
I have an app that puts up a registration window if it is not
registered when it starts. (The usual 30 day buy later / by now /
enter license kind of thing.) The app is distributed by downloading a
dmg.
I put the window up with:
[NSApp runModalForWindow: licensePanel];
which is called from
- (
tially you have to have
some checks on the final result and be prepared to fail gracefully.
RObert Clair
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Not trying to be rude here, but this is so confused that it is hard to
figure out what you are trying to do.
* What do you mean by "light drawing functions" ?
* What is "self" here ? What object is this a method for ?
* If you are trying to draw, where is the connection to the location
info
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