Self contained command line tool
I have created a command line tool that executes correctly in the debugger. How do I get the built binary to execute independently without starting the Terminal app. Charlie Dickman 3tothe...@comcast.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: https://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
System Menu Bar
Is there a way to make the system menu bar transparent from within a cocoa app? Charlie Dickman 3tothe...@comcast.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: https://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
App memory
Is there a system command or any other way to get application memory stats like vm_stat does for the whole system? Charlie Dickman 3tothe...@comcast.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: https://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: App memory
Thanks. If integral max resident set size means the amount of memory being used then that's exactly what I want. On Aug 16, 2012, at 11:30 AM, Stephen J. Butler wrote: getrusage? On Thu, Aug 16, 2012 at 9:39 AM, Charlie Dickman 3tothe...@comcast.net wrote: Is there a system command or any other way to get application memory stats like vm_stat does for the whole system? Charlie Dickman 3tothe...@comcast.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: https://lists.apple.com/mailman/options/cocoa-dev/stephen.butler%40gmail.com This email sent to stephen.but...@gmail.com Charlie Dickman 3tothe...@comcast.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: https://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Why no keyboard or mousedown events?
When my app is running menu bar requests are honored in a timely fashion but neither keyboard shortcuts nor mouse clicks not in the menu bar are. Can anybody tell me why and what to do about it? Charlie Dickman 3tothe...@comcast.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: https://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Where do these come from...
I have been getting the following messages in the console window while my program is running... Wed Aug 15 11:13:51 charlie-dickmans-mac-pro.local Mah-Jongg[4416] Error: CGContextSetFillColorWithColor: invalid context 0x0 Wed Aug 15 11:13:51 charlie-dickmans-mac-pro.local Mah-Jongg[4416] Error: CGContextSetStrokeColorWithColor: invalid context 0x0 Wed Aug 15 11:13:51 charlie-dickmans-mac-pro.local Mah-Jongg[4416] Error: CGContextFillRects: invalid context 0x0 Wed Aug 15 11:13:51 charlie-dickmans-mac-pro.local Mah-Jongg[4416] Error: CGContextFillRects: invalid context 0x0 I have isolated their source to the following code... [[NSColor whiteColor] set]; [die1 drawInRect: iDieDrawRect fromRect: imageRect1 operation: NSCompositeSourceOver fraction: 1.0]; [die2 drawInRect: jDieDrawRect fromRect: imageRect2 operation: NSCompositeSourceOver fraction: 1.0]; What can I do to eliminate these errors? I know the simple answer is to make the context valid but I don't know how to do that. Charlie Dickman 3tothe...@comcast.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: https://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: Where do these come from...
Here's the whole method... it is being called from within a view's drawRect
method...
- (void) showDiceAtX: (float) x Y: (float) y {
NSRect imageRect1, imageRect2;
NSImage *die1 = nil, *die2 = nil;
iDie = iRand(1, 6);
switch (iDie) {
case 1:
die1 = [NSImage imageNamed: @1 Die];
break;
case 2:
die1 = [NSImage imageNamed: @2 Die];
break;
case 3:
die1 = [NSImage imageNamed: @3 Die];
break;
case 4:
die1 = [NSImage imageNamed: @4 Die];
break;
case 5:
die1 = [NSImage imageNamed: @5 Die];
break;
case 6:
die1 = [NSImage imageNamed: @6 Die];
}
jDie = iRand(1, 6);
switch (jDie) {
case 1:
die2 = [NSImage imageNamed: @1 Die];
break;
case 2:
die2 = [NSImage imageNamed: @2 Die];
break;
case 3:
die2 = [NSImage imageNamed: @3 Die];
break;
case 4:
die2 = [NSImage imageNamed: @4 Die];
break;
case 5:
die2 = [NSImage imageNamed: @5 Die];
break;
case 6:
die2 = [NSImage imageNamed: @6 Die];
}
imageRect1.origin = imageRect2.origin = NSZeroPoint;
imageRect1.size = [die1 size];
imageRect2.size = [die2 size];
/*
* NSRect NSMakeRect(float x, float y, float w, float h)
*
* Creates an NSRect having the specified origin of [x, y] and size of
[w, h]
*/
iDieDrawRect = NSMakeRect(x - imageRect1.size.width - 2, y,
imageRect1.size.width, imageRect1.size.height);
jDieDrawRect = NSMakeRect(x + 2, y, imageRect2.size.width,
imageRect2.size.height);
while (![self lockFocusIfCanDraw]) RELQ(.1);
[[NSColor whiteColor] set];
[die1 drawInRect: iDieDrawRect
fromRect: imageRect1
operation: NSCompositeSourceOver
fraction: 1.0];
[die2 drawInRect: jDieDrawRect
fromRect: imageRect2
operation: NSCompositeSourceOver
fraction: 1.0];
[self unlockFocus];
[[self window] flushWindow];
}
without the lockFocus the images never show.
On Aug 15, 2012, at 10:35 PM, Stephen J. Butler wrote:
On Wed, Aug 15, 2012 at 10:20 AM, Charlie Dickman 3tothe...@comcast.net
wrote:
[[NSColor whiteColor] set];
[die1 drawInRect: iDieDrawRect
fromRect: imageRect1
operation: NSCompositeSourceOver
fraction: 1.0];
[die2 drawInRect: jDieDrawRect
fromRect: imageRect2
operation: NSCompositeSourceOver
fraction: 1.0];
Where are these being called from in your program? What's the context
of the surrounding code in the method?
Charlie Dickman
3tothe...@comcast.net
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Re: Where do these come from...
I DO NOT call drawRect directly. I DO call [self setNeedsDisplay: YES] to keep things going. All drawing is done from inside drawRect which has been invoked through the use of [self setNeedsDisplay: YES], On Aug 15, 2012, at 11:19 PM, Stephen J. Butler wrote: On Wed, Aug 15, 2012 at 10:02 PM, Charlie Dickman 3tothe...@comcast.net wrote: Here's the whole method... it is being called from within a view's drawRect method... Are you calling drawRect directly from your code? If so, don't do that. You should be sending one of the setNeedsDisplay messages, and letting AppKit call drawRect for you. With AppKit calling drawRect your lockFocus messages should not be needed. Charlie Dickman 3tothe...@comcast.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: https://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: How do I get memory usage numbers?
I'm using the system say command to speak phrases within my app. I've tried NSSpeechSynthesizer and Carbon's Speech Synthesis Engine but both have a serious memory leak problem which gets my app into trouble. By using the system say command I move the problem out of my app and into the system. What I want to do is determine the ratio of inactive to free in order to determine when to execute the purge command to free up the inactive memory before the system gets into trouble. On Aug 13, 2012, at 1:56 PM, David Duncan wrote: On Aug 12, 2012, at 7:10 PM, Charlie Dickman 3tothe...@comcast.net wrote: Initially I'm interested in system wide memory usage (free, wired,active, inactive) but following on I might like numbers for just my process. If hacking through Darwin is the only way to do this than never mind but with all of the programs out there that include these numbers there must be a better way to find out how it's done. What are you trying to debug? -- David Duncan Charlie Dickman 3tothe...@comcast.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: https://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Using NSPipe to get system command output
I'm trying to get the output from a vm_stat command using the following code.
My app hangs in the [vmRead availableData] call as it should if there is no
data available but it never comes back. What am I doing wrong? I have searched
through the sample code on apples developer site with no luck.
NSPipe *vmPipe = [NSPipe pipe];
NSFileHandle *vmRead = [vmPipe fileHandleForReading];
[vm setLaunchPath: @/usr/bin/vm_stat];// 1 page = 4096
bytes
[vm setStandardOutput: vmPipe];
[vm launch];
NSData *vmData = nil;
int vmDataLength = 0;
do {
vmData = [vmRead availableData];
vmDataLength = [vmData length];
} while (vmDataLength != 0);
Charlie Dickman
3tothe...@comcast.net
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Re: Using NSPipe to get system command output
This is just test code to see if I can actually get the vm_stat data. It is run
only under the debugger 1 or 2 steps at a time. When I have the concept down I
will modify it.
No, I actually mean != 0, see below - it is the description of how reading
available data from a NSFileHandleForReading...
Return Value
The data currently available through the receiver.
Discussion
If the receiver is a file, returns the data obtained by reading the
file from the file pointer to the end of the file. If the receiver is a
communications channel, reads up to a buffer of data and returns it; if no data
is available, the method blocks. Returns an empty data object if the end of
file is reached. Raises NSFileHandleOperationException if attempts to determine
file-handle type fail or if attempts to read from the file or channel fail.
On Aug 13, 2012, at 6:09 PM, Jens Alfke wrote:
On Aug 13, 2012, at 2:17 PM, Charlie Dickman 3tothe...@comcast.net wrote:
int vmDataLength = 0;
do {
vmData = [vmRead availableData];
vmDataLength = [vmData length];
} while (vmDataLength != 0);
Don't you mean == 0 on the final line?
Also, spin-loops like this are a really bad idea — this loop is going to
consume something like 100% CPU. If you have to loop like this, run the
current run loop in between tests.
—Jens
Charlie Dickman
3tothe...@comcast.net
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Re: Using NSPipe to get system command output
So why doesn't it work???
On Aug 13, 2012, at 7:08 PM, Ken Thomases wrote:
On Aug 13, 2012, at 5:09 PM, Jens Alfke wrote:
On Aug 13, 2012, at 2:17 PM, Charlie Dickman 3tothe...@comcast.net wrote:
int vmDataLength = 0;
do {
vmData = [vmRead availableData];
vmDataLength = [vmData length];
} while (vmDataLength != 0);
Don't you mean == 0 on the final line?
Also, spin-loops like this are a really bad idea — this loop is going to
consume something like 100% CPU. If you have to loop like this, run the
current run loop in between tests.
This isn't a spin loop and he has the termination condition correct.
-[NSFileHandle availableData] blocks if there's no data available. It
returns a zero-length NSData on end-of-file.
Regards,
Ken
Charlie Dickman
3tothe...@comcast.net
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Re: Using NSPipe to get system command output
Andy,
THANK YOU SO MUCH!!
I am glad my inquiry spawned some interest but you have taught me how to fish
;^)
Thanks again
On Aug 13, 2012, at 7:27 PM, Andy Lee wrote:
Apple seems to have pulled the ancient Moriarity example which demonstrates
basic use of NSTask, but my cleanup of it should still work.
https://github.com/aglee/MoreArty
--Andy
On Aug 13, 2012, at 6:42 PM, Kyle Sluder k...@ksluder.com wrote:
On Mon, Aug 13, 2012, at 02:17 PM, Charlie Dickman wrote:
I'm trying to get the output from a vm_stat command using the following
code. My app hangs in the [vmRead availableData] call as it should if
there is no data available but it never comes back. What am I doing
wrong? I have searched through the sample code on apples developer site
with no luck.
NSPipe *vmPipe = [NSPipe pipe];
NSFileHandle *vmRead = [vmPipe fileHandleForReading];
[vm setLaunchPath: @/usr/bin/vm_stat];// 1 page = 4096
bytes
[vm setStandardOutput: vmPipe];
[vm launch];
NSData *vmData = nil;
int vmDataLength = 0;
do {
vmData = [vmRead availableData];
vmDataLength = [vmData length];
} while (vmDataLength != 0);
You can't do this. You need to run the runloop.
--Kyle Sluder
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3tothe...@comcast.net
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How do I get memory usage numbers?
How do I get system memory usage numbers within my app? Charlie Dickman 3tothe...@comcast.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: https://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: How do I get memory usage numbers?
Initially I'm interested in system wide memory usage (free, wired,active, inactive) but following on I might like numbers for just my process. If hacking through Darwin is the only way to do this than never mind but with all of the programs out there that include these numbers there must be a better way to find out how it's done. On Aug 12, 2012, at 7:17 PM, Jens Alfke wrote: On Aug 12, 2012, at 3:21 PM, Charlie Dickman 3tothe...@comcast.net wrote: How do I get system memory usage numbers within my app? What kind of memory usage numbers? There are a lot of different ones — take a look at the man page for 'top', or at all the different views in Activity Monitor. And do you want them for all processes or just your own? (The general answer is to go look up the source to 'top' in the Darwin open source repo and see how it does it. It's using some low-level system calls that I don't believe are documented otherwise.) —Jens Charlie Dickman 3tothe...@comcast.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: https://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: How to...
WOW!!! Talk about out of the frying pan and into the fire! Running my app using the code below to speak phrases hosed my whole system! It wouldn't respond to a mouse movement or any keyboard input nor would it reboot properly even from a power down/power up restart. I had to reinstall from a saved combined system package. There is a real problem in the speech synthesizer. On Aug 9, 2012, at 9:54 PM, Charlie Dickman wrote: I have solved my problem as follows; if there is any memory leak inside the speech synthesizer it is isolated to the spawned task and is short lived and outside of my app. NSTask *ls = [[NSTask alloc] init]; NSString *thePhrase = [NSString stringWithFormat: @\%@\, phrase]; NSMutableArray *args = [NSMutableArray arrayWithCapacity: 20]; [args addObject: thePhrase]; [ls setLaunchPath: @/usr/bin/say]; [ls setArguments: args]; [ls launch]; [ls waitUntilExit]; [ls release]; Waiting until the task terminates is absolutely necessary to keep the app from having more than one 'say' task going at the same time which totally garbles the speech and hoses up the system. And the timing between spoken phrases is perfect for my purpose. On Aug 9, 2012, at 6:05 PM, Charlie Dickman wrote: I tried the Speech Synthesizer Manager too. It suffers from the same deficiency that NSSpeechSynthesizer does. I suspect that NSSpeechSynthesizer uses the Speech Synthesis Manager internally. On Aug 9, 2012, at 2:51 PM, Ken Thomases wrote: On Aug 9, 2012, at 1:29 PM, Jens Alfke wrote: On Aug 9, 2012, at 10:00 AM, Charlie Dickman 3tothe...@comcast.net wrote: NSTask *ls = [[NSTask alloc] init]; NSFileHandle *stdIn = [NSFileHandle fileHandleForReadingAtPath: txtFilePath]; [ls setStandardInput: stdIn]; [ls setLaunchPath: @/usr/bin/say]; [ls launch]; [ls release]; My problem is that the command speaks the text in the file when the task is launched but not anything written to it subsequently. Yeah, when the NSFileHandle hits EOF on the file it will propagate the EOF to the task, which will then exit. What you want instead is to make your own NSStream that isn't tied to a file. But looking at the NSTask and NSFileHandle APIs, I don't see how you can attach an NSStream to a task... The correct thing to do is to use a pipe to send data to the task. You can keep that open as long as you like and keeping writing new data. However, you (Charlie) also wrote: I have also looked into using an NSPipe but it doesn't seem to add anything. You want to look again because that should work. However, there's no reason to believe that the say command will speak the data in dribs and drabs as you write it. The man page says that, when input is not a TTY, the text is spoken all at once. So, presumably it will not speak until you close the pipe and it sees EOF and knows it has all of the data. If NSSpeechSynthesizer has problems, you might look into the Speech Synthesis Manager. Either way, I would not expect that you could work around the problems indefinitely using the say command, since it surely uses those APIs under the hood. (The man page actually states that it uses the Speech Synthesis Manager.) Regards, Ken Charlie Dickman 3tothe...@comcast.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: https://lists.apple.com/mailman/options/cocoa-dev/3tothe4th%40comcast.net This email sent to 3tothe...@comcast.net Charlie Dickman 3tothe...@comcast.net Charlie Dickman 3tothe...@comcast.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: https://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
How to...
I am trying to get the unix say command to speak the text I am writing to a file using the following... NSTask *ls = [[NSTask alloc] init]; NSFileHandle *stdIn = [NSFileHandle fileHandleForReadingAtPath: txtFilePath]; [ls setStandardInput: stdIn]; [ls setLaunchPath: @/usr/bin/say]; [ls launch]; [ls release]; My problem is that the command speaks the text in the file when the task is launched but not anything written to it subsequently. I know about NSSpeechSynthesizer and I have tried it but it doesn't work reliably (I think the NSSpeechSynthesizer has a memory leak and am in touch with the responsible Apple engineer via the speech list but in the meantime...). I have also looked into using an NSPipe but it doesn't seem to add anything. I think what I want to do is execute the command ls -f file | say but I can't figure out how to do that. Can someone help me? Charlie Dickman 3tothe...@comcast.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: https://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: How to...
I tried the Speech Synthesizer Manager too. It suffers from the same deficiency that NSSpeechSynthesizer does. I suspect that NSSpeechSynthesizer uses the Speech Synthesis Manager internally. On Aug 9, 2012, at 2:51 PM, Ken Thomases wrote: On Aug 9, 2012, at 1:29 PM, Jens Alfke wrote: On Aug 9, 2012, at 10:00 AM, Charlie Dickman 3tothe...@comcast.net wrote: NSTask *ls = [[NSTask alloc] init]; NSFileHandle *stdIn = [NSFileHandle fileHandleForReadingAtPath: txtFilePath]; [ls setStandardInput: stdIn]; [ls setLaunchPath: @/usr/bin/say]; [ls launch]; [ls release]; My problem is that the command speaks the text in the file when the task is launched but not anything written to it subsequently. Yeah, when the NSFileHandle hits EOF on the file it will propagate the EOF to the task, which will then exit. What you want instead is to make your own NSStream that isn't tied to a file. But looking at the NSTask and NSFileHandle APIs, I don't see how you can attach an NSStream to a task... The correct thing to do is to use a pipe to send data to the task. You can keep that open as long as you like and keeping writing new data. However, you (Charlie) also wrote: I have also looked into using an NSPipe but it doesn't seem to add anything. You want to look again because that should work. However, there's no reason to believe that the say command will speak the data in dribs and drabs as you write it. The man page says that, when input is not a TTY, the text is spoken all at once. So, presumably it will not speak until you close the pipe and it sees EOF and knows it has all of the data. If NSSpeechSynthesizer has problems, you might look into the Speech Synthesis Manager. Either way, I would not expect that you could work around the problems indefinitely using the say command, since it surely uses those APIs under the hood. (The man page actually states that it uses the Speech Synthesis Manager.) Regards, Ken Charlie Dickman 3tothe...@comcast.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: https://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: How to...
I have solved my problem as follows; if there is any memory leak inside the speech synthesizer it is isolated to the spawned task and is short lived and outside of my app. NSTask *ls = [[NSTask alloc] init]; NSString *thePhrase = [NSString stringWithFormat: @\%@\, phrase]; NSMutableArray *args = [NSMutableArray arrayWithCapacity: 20]; [args addObject: thePhrase]; [ls setLaunchPath: @/usr/bin/say]; [ls setArguments: args]; [ls launch]; [ls waitUntilExit]; [ls release]; Waiting until the task terminates is absolutely necessary to keep the app from having more than one 'say' task going at the same time which totally garbles the speech and hoses up the system. And the timing between spoken phrases is perfect for my purpose. On Aug 9, 2012, at 6:05 PM, Charlie Dickman wrote: I tried the Speech Synthesizer Manager too. It suffers from the same deficiency that NSSpeechSynthesizer does. I suspect that NSSpeechSynthesizer uses the Speech Synthesis Manager internally. On Aug 9, 2012, at 2:51 PM, Ken Thomases wrote: On Aug 9, 2012, at 1:29 PM, Jens Alfke wrote: On Aug 9, 2012, at 10:00 AM, Charlie Dickman 3tothe...@comcast.net wrote: NSTask *ls = [[NSTask alloc] init]; NSFileHandle *stdIn = [NSFileHandle fileHandleForReadingAtPath: txtFilePath]; [ls setStandardInput: stdIn]; [ls setLaunchPath: @/usr/bin/say]; [ls launch]; [ls release]; My problem is that the command speaks the text in the file when the task is launched but not anything written to it subsequently. Yeah, when the NSFileHandle hits EOF on the file it will propagate the EOF to the task, which will then exit. What you want instead is to make your own NSStream that isn't tied to a file. But looking at the NSTask and NSFileHandle APIs, I don't see how you can attach an NSStream to a task... The correct thing to do is to use a pipe to send data to the task. You can keep that open as long as you like and keeping writing new data. However, you (Charlie) also wrote: I have also looked into using an NSPipe but it doesn't seem to add anything. You want to look again because that should work. However, there's no reason to believe that the say command will speak the data in dribs and drabs as you write it. The man page says that, when input is not a TTY, the text is spoken all at once. So, presumably it will not speak until you close the pipe and it sees EOF and knows it has all of the data. If NSSpeechSynthesizer has problems, you might look into the Speech Synthesis Manager. Either way, I would not expect that you could work around the problems indefinitely using the say command, since it surely uses those APIs under the hood. (The man page actually states that it uses the Speech Synthesis Manager.) Regards, Ken Charlie Dickman 3tothe...@comcast.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: https://lists.apple.com/mailman/options/cocoa-dev/3tothe4th%40comcast.net This email sent to 3tothe...@comcast.net Charlie Dickman 3tothe...@comcast.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: https://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: Power Nap causing NSTimer to fire immediately
I am not at all sure about the details but I think your app is receiving some sort of notification that power sleep is occurring in order to allow it to do what it needs to do in that situation. My guess is that all timers are caused to expire because when asleep they will not and then, when wake up occurs, the app is hung waiting for events that will never happen. I don't know how, perhaps someone else on this list can respond, but you should, when your timers fire prematurely, determine if power sleep is occurring and act accordingly. On Aug 4, 2012, at 11:47 AM, Trygve Inda wrote: When our software is running and the Mac goes into Power Nap, our NSTimers (which are fire-once and set to 3 hour periods) are firing immediately, so the software does the timer work and installed a new fire-once timer for 3 hours later. Except that one of course fires immediately and it just keeps going. How can we prevent this? I'd like our app to stop completely (but not quit of course) during Power Nap. Just a follow-up. It seems our app shouldn't be able to do anything during power nap, but something is causing weirdness. Anyone see anything like this with NSTimers on 10.8? Trygve ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: https://lists.apple.com/mailman/options/cocoa-dev/3tothe4th%40comcast.net This email sent to 3tothe...@comcast.net Charlie Dickman 3tothe...@comcast.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: https://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: Invalidate non-repeating NSTimer after fired?
You must use the 2nd way. If you don't you could get a memory exception if the
timer has fired and, therefore, been invalidated.
On Aug 3, 2012, at 4:19 PM, Trygve Inda wrote:
NSTimer* myTimer = [NSTimer scheduledTimerWithTimeInterval:60 target:self
selector:@selector(wantsUpdate:) userInfo:nil repeats:NO]
Sometime after it fires (and occasionally before), I call
if ( myTimer )
{
[myTimer invalidate];
[myTimer release];
myTimer = nil;
}
Should I really be doing:
if ( myTimer )
{
if ([myTimer isValid])
[myTimer invalidate];
[myTimer release];
myTimer = nil;
}
I am doing it the first way without trouble... At least I think it is ok.
The docs say non-repeating timers are invalidated after they fire.
Which way is better?
Comments?
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Re: Hang detection
The way I would do it, even though it may be old fashioned, would be to define an int (or NSNumber) in each of the operations that could be involved in the hang (race condition) that is assigned a value other than 0 that uniquely represents the operation when it begins and set back to 0 when it ends. Then, in the code that is guaranteed to be executed when the hang occurs, check the values of the flag values to see which are executing at that point. Indication of 2 or more being in execution simultaneously identifies the culprits. On Jul 29, 2012, at 4:56 PM, John MacMullin wrote: My app hangs due to what appears to be two competing operations. Appears because other possible reasons may exist. How do I snapshot, debug or otherwise detect and obtain a stack trace of the code causing the hang? Best regards, John MacMullin ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: https://lists.apple.com/mailman/options/cocoa-dev/3tothe4th%40comcast.net This email sent to 3tothe...@comcast.net Charlie Dickman 3tothe...@comcast.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: https://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: looking for a memory problem
I've seen this kind of thing before when I have released an object that was allocated in the autorelease pool. Have a go over of the objects you release and make sure that you own them when you release them. On Jul 17, 2012, at 6:30 AM, Martin Hewitson wrote: Dear list, I've been trying to track down a crash that happens sometimes when a document is closed in my NSPersistentDocument based app. This started to appear during the process of going from GC to non-GC. But it only happens after an undetermined number of document closes and reopens. The error message I get in the debugger is * thread #1: tid = 0x2103, 0x7fff8f614e90 libobjc.A.dylib`objc_msgSend + 16, stop reason = EXC_BAD_ACCESS (code=1, address=0x10) frame #0: 0x7fff8f614e90 libobjc.A.dylib`objc_msgSend + 16 frame #1: 0x0001098147d0 frame #2: 0x7fff8f61a03c libobjc.A.dylib`(anonymous namespace)::AutoreleasePoolPage::pop(void*) + 434 frame #3: 0x7fff938c8915 CoreFoundation`_CFAutoreleasePoolPop + 37 frame #4: 0x7fff8b8bb6cf Foundation`-[NSAutoreleasePool drain] + 154 frame #5: 0x7fff90146115 AppKit`-[NSApplication run] + 634 frame #6: 0x7fff903c2244 AppKit`NSApplicationMain + 867 frame #7: 0x00011574 TeXnicle`start + 52 I've tried disabling various parts of the app trying to isolate where the issue might be. Could anyone offer any advice on how I might better track this down? Perhaps using instruments in some way? 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: https://lists.apple.com/mailman/options/cocoa-dev/3tothe4th%40comcast.net This email sent to 3tothe...@comcast.net Charlie Dickman 3tothe...@comcast.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: https://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: looking for a memory problem
What is ARC and where can I read learn about it? On Jul 17, 2012, at 11:42 AM, Sean McBride wrote: On Tue, 17 Jul 2012 12:30:39 +0200, Martin Hewitson said: This started to appear during the process of going from GC to non-GC. What do you mean non-GC? I strongly suggest going from GC to ARC, not from GC back to the stone-age retain-release. Although quite different 'under the hood', writing for GC and ARC is not so different, and you can even switch over slowly. -- Sean ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: https://lists.apple.com/mailman/options/cocoa-dev/3tothe4th%40comcast.net This email sent to 3tothe...@comcast.net Charlie Dickman 3tothe...@comcast.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: https://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: looking for a memory problem
Never mind. It originates in Xcode 4 and I don't use Xcode 4. On Jul 17, 2012, at 11:52 AM, Charlie Dickman wrote: What is ARC and where can I read learn about it? On Jul 17, 2012, at 11:42 AM, Sean McBride wrote: On Tue, 17 Jul 2012 12:30:39 +0200, Martin Hewitson said: This started to appear during the process of going from GC to non-GC. What do you mean non-GC? I strongly suggest going from GC to ARC, not from GC back to the stone-age retain-release. Although quite different 'under the hood', writing for GC and ARC is not so different, and you can even switch over slowly. -- Sean ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: https://lists.apple.com/mailman/options/cocoa-dev/3tothe4th%40comcast.net This email sent to 3tothe...@comcast.net Charlie Dickman 3tothe...@comcast.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: https://lists.apple.com/mailman/options/cocoa-dev/3tothe4th%40comcast.net This email sent to 3tothe...@comcast.net Charlie Dickman 3tothe...@comcast.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: https://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: Modal event processing
Actually, no, I'm not trying to mimic user interaction but that's an idea worth thinking about. The program demonstrates how to play Chinese Mah-Jong as described in A.D. Millington's (excellent) book The Complete Book of Mah-Jong so it runs on a timer driven dispatcher to have each player in turn play his hand. The problem I am having is that outside events like a click in the menu bar or a keyboard event have a hard time getting through. On Jul 5, 2012, at 11:19 PM, Yingshen Yu wrote: Are you trying to mimic user interactions with Cocoa UI? If I understand you right, it might be easier to do it with accessibility API, so you can write a normal Cocoa App and a write another app to mimic user interaction to this cocoa app. -Jonny 在 2012-7-6，上午3:57，Charlie Dickman 3tothe...@comcast.net 写道： I have a demonstration app that is basically operating on a 0.15 second timer loop. The problem I am having is that even with a periodic timer going off it is very difficult to get menu events and mouse clicks in window controls through to be processed. I have tried setting up an additional flow of events using (NSEvent) + (void)startPeriodicEventsAfterDelay:(NSTimeInterval)delaySecondswithPeriod:(NSTimeInterval)periodSeconds as well as [[NSRunLoop currentRunLoop] runUntilDate: [NSDate dateWithTimeIntervalSinceNow: t != 0. ? t * 1.01 : .01]] (where t can be set arbitrarily but is typically called with a value of 0.15) but none of this improves response. Is there anything else to try? Charlie Dickman 3tothe...@comcast.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: https://lists.apple.com/mailman/options/cocoa-dev/yingshen.yu%40gmail.com This email sent to yingshen...@gmail.com Charlie Dickman 3tothe...@comcast.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: https://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: Modal event processing
Uli, Thanks for the education. The way you suggest is what I did pre-OS X and Xcode/Cocoa and I didn't have this problem Being self taught (by books, sample code and documentation) in programming in Xcode/Cocoa for OS X and IOS it sounds like I started off on the wrong foot with the versatility of timers. I'll have to re-architect the app. Thanks again. On Jul 6, 2012, at 7:24 AM, Uli Kusterer wrote: On 05.07.2012, at 21:57, Charlie Dickman wrote: I have a demonstration app that is basically operating on a 0.15 second timer loop. The problem I am having is that even with a periodic timer going off it is very difficult to get menu events and mouse clicks in window controls through to be processed. I have tried setting up an additional flow of events using (NSEvent) + (void)startPeriodicEventsAfterDelay:(NSTimeInterval)delaySecondswithPeriod:(NSTimeInterval)periodSeconds as well as [[NSRunLoop currentRunLoop] runUntilDate: [NSDate dateWithTimeIntervalSinceNow: t != 0. ? t * 1.01 : .01]] (where t can be set arbitrarily but is typically called with a value of 0.15) but none of this improves response. Is there anything else to try? It's not how long you give time to the event loop, it is how often. Also, startPeriodicEventsAfterDelay: is intended for mouse tracking, not for general-purpose timers. You're being very vague and fuzzy with your terminology, so I hope you don't mind if I just spell out how I'd do a periodic task, and then you can tell whether that's what you're doing and when you're doing it differently: - Use an NSTimer to get your periodic processing time, not other calls. - Let the rest of the app run normally - Do the minimum amount of work needed in your timer. Timers run on your main thread run loop, so you have to do short bits of work so the OS can come up for breath often enough. E.g. do your pre-loop setup, then put the loop body in the timer (using instance variables for the counter other stuff you need to keep around between iterations), and then do 1 iteration per timer fire. - Don't use blocking calls (like network access) on the main run loop, use calls that do their work on another thread and then call you back when they're done (e.g. NSURLConnection, not NSURL -initWithContentsOfURL:). Or, if you can run your stuff on a secondary thread, queue up your little bits of work in an NSOperationQueue or other GCD-backed queue that runs on another thread. Cheers, -- Uli Kusterer The Witnesses of TeachText are everywhere... Charlie Dickman 3tothe...@comcast.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: https://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: Modal event processing
I just had a look at the NSAnimation class document and it actually suggests very prominently that, because of the limited capabilities of an NSAnimation, an NSTimer be used. I also just went back over the architecture of my app with Uli's comments in mind and have discovered that I think I am actually doing what he suggests. I am not polling for events nor am I trying to drive the run loop myself. In my view's drawRect method I use a global state variable that defines the next function to perform. When drawRect gets called I do what is necessary for the current state, set up for the next state, set the value for the next state and then return from drawRect. So the primary driving force is the periodic view update requirement (which is guaranteed by actions invoking [self setNeedsDisplay: YES]). Within the execution of a particular function I use NSTimers to drive the steps of that function ultimately exiting back to the dispatch stack in drawRect. So I am at a loss as how to better allow the system to do a better job of servicing menu clicks or keyboard presses. Can you help me to see what I am missing? On Jul 6, 2012, at 10:22 AM, Richard Altenburg (Brainchild) wrote: In a situation similar to yours, I ended up replacing the NSTimer with an NSAnimation. The animation I was doing was way faster after this tiny change, plus the user interface was not blocked at all. I refresh my animation 30 times per second now without any negative effect for the user. I think it is worth a try in your case before you rethink your application. [[[Brainchild alloc] initWithName:@Richard Altenburg] saysBestRegards]; Op 6 jul. 2012, om 15:38 heeft Charlie Dickman het volgende geschreven: I'll have to re-architect the app. Charlie Dickman 3tothe...@comcast.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: https://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Modal event processing
I have a demonstration app that is basically operating on a 0.15 second timer loop. The problem I am having is that even with a periodic timer going off it is very difficult to get menu events and mouse clicks in window controls through to be processed. I have tried setting up an additional flow of events using (NSEvent) + (void)startPeriodicEventsAfterDelay:(NSTimeInterval)delaySecondswithPeriod:(NSTimeInterval)periodSeconds as well as [[NSRunLoop currentRunLoop] runUntilDate: [NSDate dateWithTimeIntervalSinceNow: t != 0. ? t * 1.01 : .01]] (where t can be set arbitrarily but is typically called with a value of 0.15) but none of this improves response. Is there anything else to try? Charlie Dickman 3tothe...@comcast.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: https://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: Modal event processing
Correct, by your say so, or not if the timers don't drive the program it just sits there and does nothing. Human intervention is required to configure it or cause it to quit. On Jul 5, 2012, at 8:24 PM, Graham Cox wrote: On 06/07/2012, at 5:57 AM, Charlie Dickman wrote: I have a demonstration app that is basically operating on a 0.15 second timer loop. The problem I am having is that even with a periodic timer going off it is very difficult to get menu events and mouse clicks in window controls through to be processed. I have tried setting up an additional flow of events using (NSEvent) + (void)startPeriodicEventsAfterDelay:(NSTimeInterval)delaySecondswithPeriod:(NSTimeInterval)periodSeconds as well as [[NSRunLoop currentRunLoop] runUntilDate: [NSDate dateWithTimeIntervalSinceNow: t != 0. ? t * 1.01 : .01]] (where t can be set arbitrarily but is typically called with a value of 0.15) but none of this improves response. Is there anything else to try? Well, you could try writing your app correctly, rather than polling and running the event loop manually. What are you trying to do? Why can't you let the event loop run normally? --Graham Charlie Dickman 3tothe...@comcast.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: https://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: Transparent NSTextField
In IB you can set the Draws Background property to no (uncheck the box) or send the NSTextField a SetDrawsBackground: NO message. On Jun 28, 2012, at 11:22 AM, Vincent Habchi wrote: Hi everybody, I’m trying to add a transparent editable NSTextField to a view. As long as the field is not editable (e.g. a label), everything is fine; but with an editable field, I get a background fill. I imagine this is under the window NSTextView responsibility. Has someone already succeeded in programming a totally transparent NSTextField, or shall I recourse to a CATextLayer instead? Thanks, Vincent ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: https://lists.apple.com/mailman/options/cocoa-dev/3tothe4th%40comcast.net This email sent to 3tothe...@comcast.net Charlie Dickman 3tothe...@comcast.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: https://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: NSWindow AutoSave
I don't know that this is a secret recipe but it works for me when I include the following 2 lines of code in the awakeFromNib method of the NSview in the window... [[self window] setFrameUsingName: @autosaveView]; [[self window] setFrameAutosaveName: @autosaveView]; And I don't know that it's significant but in the init method for the same NSView I declare and initialize the standard defaults. On Jun 22, 2012, at 12:10 PM, koko wrote: I have searched, read and implemented the suggestions found but in no case can I get a non-resizeable window or panel to open in the last position it occupied. There must be some secret sauce, is anyone willing to share the recipe? -koko ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: https://lists.apple.com/mailman/options/cocoa-dev/3tothe4th%40comcast.net This email sent to 3tothe...@comcast.net Charlie Dickman 3tothe...@comcast.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: https://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: NSTextField Selection
You are going around the world to cross the street. Define an NSFormatter for your text field and implement a textfield delegate and you can have the exact control over the textfield that you are after. On Jun 15, 2012, at 3:41 PM, Kyle Sluder wrote: On Jun 15, 2012, at 12:31 PM, koko k...@highrolls.net wrote: I have an NSTextField whose width is just enough for M and W. The filled can get set with text longer than one character. The user is to replace this multi-character text with a single character. I'm really confused by your description of this interface. How and why can the field be filled with more than one character? So, without having to double click to select all text before entering the single character replacement what is the best way to programmatically select the text? Actually selecting the text is the easy part. Just call -selectText:. Do I subclass NSTextField , define a tracking rect and look for mouse entered and then -selectText? Seems extreme. Is there an easy way? What do you want the trigger to be for selecting all the text? Whenever the user starts editing my text field, all the text should be selected so they can hit one key to replace it all? If that's what you want, I'd just hook up an object as the text field's delegate and implement -controlTextDidBeginEditing: to select all text in the field editor (accessible via the @NSFieldEditor key of the notification's user info dictionary). --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: https://lists.apple.com/mailman/options/cocoa-dev/3tothe4th%40comcast.net This email sent to 3tothe...@comcast.net Charlie Dickman 3tothe...@comcast.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: https://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: Authorization to copy a file -- is it really that complex?
Laurent, Thanks so much for the links! For me wrapper packages are by far the best tool for understanding Apple's APIs. I used SSCrypto to learn how to use openSSL. On Jun 14, 2012, at 4:56 PM, Laurent Daudelin wrote: Jens, I understand your pain. I didn't want to go through it either and I finally found BLAuthentication which is a Objective-C wrapper class around the Authorization Services. It's a bit outdated but still works fine for me. It's hard to find a copy somewhere but here is a link: http://blog.laurent.etiemble.com/index.php?post/2005/12/05/36 -Laurent. -- Laurent Daudelin AIM/iChat/Skype:LaurentDaudelin http://www.nemesys-soft.com/ Logiciels Nemesys Software laur...@nemesys-soft.com On Jun 14, 2012, at 13:39, Jens Alfke wrote: I've managed to never have to deal with Authorization Services so far in my Cocoa career; until today. Basically I have an app that needs to install some helper tools that the user can run from a shell. (This is a lot like the way TextMate installs the 'mate' tool.) I'm giving a choice of install locations, but the typical one is going to be /usr/bin, so the app will need to authorize to do that. Reading through the Authorization Services Programming Guide and BetterAuthorizationSample, this all looks really, really complicated. All I need to do is the GUI equivalent of sudo ditto my_tool /usr/bin — does this really take pages and pages of code involving AuthorizationRefs and IPC, and either setuid or invoking launchctl?! —Jens ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: https://lists.apple.com/mailman/options/cocoa-dev/3tothe4th%40comcast.net This email sent to 3tothe...@comcast.net Charlie Dickman 3tothe...@comcast.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: https://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Data encryption
Can someone direct me to some documentation on how to do data encryption in Cocoa/Objective C/C? Charlie Dickman 3tothe...@comcast.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: https://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: Data encryption
Thanks Mike. I need to be able to use commoncrypto to do what I need to do. Is there a single source with reliable sample code? On Jun 6, 2012, at 1:02 PM, Mikkel Islay wrote: Charles, Cryptographic services is a good place to start: https://developer.apple.com/library/mac/#documentation/Security/Conceptual/Security_Overview/CryptographicServices/CryptographicServices.html#//apple_ref/doc/uid/TP3976-CH3-SW1 Mikkel On 6 Jun 2012, at 18:51, Charlie Dickman wrote: Can someone direct me to some documentation on how to do data encryption in Cocoa/Objective C/C? Charlie Dickman 3tothe...@comcast.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: https://lists.apple.com/mailman/options/cocoa-dev/my.inputstream%40googlemail.com This email sent to my.inputstr...@googlemail.com Charlie Dickman 3tothe...@comcast.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: https://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: Data encryption
Jens, Thanks for your reply. I have an application on OS X, not IOS, that contains some sensitive data that I want to withhold from those not licensed to use it. I wish to use RSA encryption/decryption in block mode (I think). I want to encrypt both the public and the private key and I think I want to use (at least) 128 bit techniques although 64 bit would probably do. I intend to store the encrypted information in an NSDictionary as NSData and keep it in the application bundle. I plan to re-encrypt the keys after each use. I have code that does the archiving but I need the encryption/decryption methods. I have tried packages that are available on the internet (AquaPrime, SSCrypto) but they are difficult to manage and require a lot of busy work to keep up to date. On Jun 6, 2012, at 1:12 PM, Jens Alfke wrote: On Jun 6, 2012, at 9:51 AM, Charlie Dickman wrote: Can someone direct me to some documentation on how to do data encryption in Cocoa/Objective C/C? That's a pretty broad question! What type of encryption — symmetric or asymmetric (aka public key)? Any particular algorithm? Are you implementing the decryption as well or is that done by an existing implementation? How is the data going to be stored/transmitted and what strength of security do you need? Maybe it's best if you describe at a high level what you need to accomplish. I could point you to documentation, but you're not going to like it :/ In general this is in the Security framework, although some stuff is in CommonCrypto. The APIs are complicated, badly designed, and have changed over time; and the documentation is quite inadequate. I have found this to be the single most frustrating area to work on in Mac OS or (especially) iOS, worse even than audio. Be warned: Here Be Dragons. I do have a framework called MYCrypto* I wrote a few years ago that tries to put a friendly face on this stuff. It's still useable, but in 10.7 Apple decided to suddenly deprecate the standard APIs I was using in favor of newer APIs that I still haven't completely figured out :-p so MYCrypto needs either the 10.6 SDK or deprecation warnings disabled. Also, if you are going to do anything serious with security (i.e. anything that people other than you are going to rely on), you really need to learn some fundamentals. I highly recommend the book Practical Cryptography by Fergusen Schneier. It's very easy to get things wrong if you don't know what you're doing, and unlike typical bugs that will be triggered or not by random chance, with security you have very smart and motivated people actively trying to find and exploit your bugs. —Jens * https://github.com/snej/MYCrypto Charlie Dickman 3tothe...@comcast.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: https://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: NSTextView selection
You can use an NSTextView delegate and NSFormatters to adjust the selection as it is being made. On Jun 4, 2012, at 1:10 PM, ecir hana wrote: Hello, I have a NSTextView and when I select all the text, all the lines get highlighted from left to right margin, except the last line which is highlighted from left margin to the last character on line. Please, is it possible to highlight the last line in the same way as the other ones are, i.e. to highlight it from left to very right? I think I need to use setExtraLineFragmentRect:usedRect:textContainer: of NSLayoutManager but I'm not sure how to proceed and if it's even the right way of doing this. Thanks in advance, Ecir Hana ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: https://lists.apple.com/mailman/options/cocoa-dev/3tothe4th%40comcast.net This email sent to 3tothe...@comcast.net Charlie Dickman 3tothe...@comcast.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: https://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Memory use
Is (Are) there functions that report application memory usage, as a whole, on the stack, in the autorelease pool, in the heap? Charlie Dickman 3tothe...@comcast.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: https://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Losing memory
My application is using (leaking) too much memory and eventually dies because no more can be allocated. I have used Instruments to measure the usage and leaks and have addressed those it told me about. Now, however, Instruments indicates that memory reaches a steady state (no more increases) yet the app continues to die for lack of memory. Does anyone know of a next step I can take to help track down this problem? Charlie Dickman 3tothe...@comcast.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: https://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: Dissappearing string
The actual problem is that I am telling an NSTextfield to set it's contents (the method is actually a part of NSCell from which NSTextfield inherits it) and it does not appear in the textfield. It used to work but I have no idea what I did to break it. On May 16, 2012, at 12:59 AM, Graham Cox wrote: On 15/05/2012, at 11:38 AM, Charlie Dickman wrote: Note that the retainCount has changed in the first case but not in the second. Does anyone have any ideas as to what is happening? No, but relying on, peeking at or otherwise taking any notice of retain counts is a sure path to madness. All you need to do is follow the ownership rules and forget about what the actual retain count is, especially for a complex object like NSAttributedString. WHat is the actual problem you're trying to solve? --Graham Charlie Dickman 3tothe...@comcast.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: https://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: Dissappearing string
And a good guess it was because it got me to add the release and = nil to the code... possible[strlen(possible)] = '\0'; NSString *possibleString = [NSString stringWithFormat: @%s, possible]; NSAttributedString *theAttributedString = [[NSAttributedString alloc ] initWithString: possibleString attributes: theAttributes]; [theSudokuTextField setAttributedStringValue: theAttributedString]; [theAttributedString release]; theAttributedString = nil; and now it's working again. However, as you can see, theAttributedString itself is not mutable. Thanks millions! On May 16, 2012, at 1:13 PM, Jens Alfke wrote: On May 16, 2012, at 9:44 AM, Charlie Dickman wrote: The actual problem is that I am telling an NSTextfield to set it's contents (the method is actually a part of NSCell from which NSTextfield inherits it) No; NSTextField inherits that method from NSControl. (It _contains_ an NSTextFieldCell, which inherits a method of the same name from NSCell. I know, controls vs. cells is confusing…) and it does not appear in the textfield. It used to work but I have no idea what I did to break it. Only thing I can guess is that you passed in a mutable attributed string and later changed its contents. If the control didn’t internally create and store a copy of the original string, this will change the string it contains behind its back. —Jens Charlie Dickman 3tothe...@comcast.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: https://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: Dissappearing string
An excellent observation! That was probably causing all kinds of problems yet to be seen! Thanks so much! On May 16, 2012, at 1:51 PM, Stephen J. Butler wrote: On Wed, May 16, 2012 at 12:39 PM, Charlie Dickman 3tothe...@comcast.net wrote: possible[strlen(possible)] = '\0'; This can't possibly work. strlen() depends on the string already being \0 terminated. You can't use strlen() to find the position to add a \0. Charlie Dickman 3tothe...@comcast.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: https://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: Dissappearing string
YOU NAILED IT! My formatter is returning an absurd value when presented with the string! Now if I can just figure out the regular expression to describe the string I'll be in business. A trillion thanks! On May 16, 2012, at 6:56 PM, Graham Cox wrote: On 17/05/2012, at 2:44 AM, Charlie Dickman wrote: The actual problem is that I am telling an NSTextfield to set it's contents (the method is actually a part of NSCell from which NSTextfield inherits it) and it does not appear in the textfield. It used to work but I have no idea what I did to break it. Does the text field have a formatter? That might be changing its behaviour in all sorts of ways. For example, if a number formatter has a maximum value, your second string numerically has a much higher value than the first, so it might be being rejected by the formatter. But the mutable vs. immutable suggestion seems more likely. --Graham Charlie Dickman 3tothe...@comcast.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: https://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Dissappearing string
I can not for the life of me figure this one out.
Here is my code...
PRINT_APPEND(@\n%d, [theAttributedString
retainCount]);
DESCRIBE(theAttributedString);
TRACE;
[theSudokuTextField setAttributedStringValue:
theAttributedString];
theAttributedString = [theSudokuTextField
attributedStringValue];
PRINT_APPEND(@\n%d, [theAttributedString
retainCount]);
DESCRIBE(theAttributedString);
TRACE;
and this is the console output for an execution that works...
1
theAttributedString (NSConcreteAttributedString) ...
2 3 4 6 8 { NSFont = \BaskOldFace 9.00 pt. P [] (0x1589f0) fobj=0x46a5e0,
spc=2.25\;}
-[Controller updatePossibilitiesDisplay:] @ 1133
3
theAttributedString (NSConcreteAttributedString) ...
2 3 4 6 8 { NSFont = \BaskOldFace 9.00 pt. P [] (0x1589f0) fobj=0x46a5e0,
spc=2.25\;}
-[Controller updatePossibilitiesDisplay:] @ 1138
and this is the console output for an execution that works...
1
theAttributedString (NSConcreteAttributedString) ...
1 2 3 4 5 6 7 8 9{ NSFont = \BaskOldFace 9.00 pt. P [] (0x119ce0)
fobj=0x3e25bc0, spc=2.25\;}
-[Controller updatePossibilitiesDisplay:] @ 1133
1
theAttributedString (NSConcreteAttributedString) ...
-[Controller updatePossibilitiesDisplay:] @ 1138
Note that the retainCount has changed in the first case but not in the second.
Does anyone have any ideas as to what is happening?
Charlie Dickman
3tothe...@comcast.net
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Dissappearing textField string value
Good people,
This one really has me stumped. Perhaps someone can help me out.
In my program is the code...
NSAttributedString *theAttributedString = [[NSAttributedString alloc ]
initWithString: possibleString
attributes: theAttributes];
PRINT_APPEND(@\n%d (%d)...\n%@,
[theAttributedString retainCount],
[theAttributedString length],
theAttributedString);
[theSudokuTextField setAttributedStringValue: theAttributedString];
NSString *s = [theSudokuTextField stringValue];
assert([s length] != 0);
PRINT_APPEND looks like this
#define PRINT_APPEND(format, ...) [self printAppend: [NSString
stringWithFormat: format, ##__VA_ARGS__]]
printAppend looks like this
- (void) printAppend: (NSString *) theNSString {
printf(%s, [theNSString UTF8String]);
}
This is what appears on the debug console
1 (29)...
2
5
7 8 {
NSFont = \BaskOldFace 9.00 pt. P [] (0x3687e20) fobj=0x511bf0,
spc=2.25\;
}Assertion failed: ([s length] != 0), function -[Controller
updatePossibilitiesDisplay:], file /Users/Charlie/SudokuX III/Controller.m,
line 1143.
What could possibly make the stringValue disappear like this?
Charlie Dickman
3tothe...@comcast.net
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Re: Basic Question
As a start change (void) to (IBAction) and have IB re-ingest your .h file with the declaration in it. On May 9, 2012, at 12:33 PM, koko wrote: In a subclass of NSView I have implemented: -(void)print:(id)sender In IB I have connected a Print menu item to print: in First Responder. My print: method is not called. There is only one instance of print: in the project. So the basic question is why would my print: method not becalled? -koko ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: https://lists.apple.com/mailman/options/cocoa-dev/3tothe4th%40comcast.net This email sent to 3tothe...@comcast.net Charlie Dickman 3tothe...@comcast.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: https://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: self.myTextField.stringValue = @ fails
Read the message... Catchpoint 7 (exception thrown).2012-05-08 18:09:31.742 MyApp[18775:507] Invalid parameter not satisfying: aString != nil On May 8, 2012, at 12:15 PM, Antonio Nunes wrote: Catchpoint 7 (exception thrown).2012-05-08 18:09:31.742 MyApp[18775:507] Invalid parameter not satisfying: aString != nil @ is the nil string and the compiler is smart enough to make the substitution. Charlie Dickman 3tothe...@comcast.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: https://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: Strange issue in stroking a bezier path
I am having a similar problem but not with an Apple display and at a resolution
of 1920 x 1080 and not with stroking a path. My problem occurs with textfield
rendering when the fields abut one another. Sometimes the edges do not line up
even when they are configured to do so in IB.
(I'm staying in Snow Leopard using Xcode 3; I hate Lion and it's move away from
the mouse. I suffer from familial tremors and have a tough enough time with the
mouse and find the gesture pad impossible. I will stay on Snow Leopard until I
am forced to a new machine. Needless to say I program as a hobby - just for my
own enjoyment)
At any rate I believe the problem is with the graphics chip and its ability to
consistently activate pixels in close proximity when not drawn with a single
stroke. I know of no solution except to adjust the placement of your drawn
objects to minimize the effect.
Changing monitors or resolution, I think, will not address the problem. A
different, perhaps better graphics card might.
On May 4, 2012, at 9:19 PM, Peter Teeson wrote:
Xcode 4.3.2, Lion 10.7.3,
Apple 30 Cinema Display, Samsung SyncMaster 950p
Consider the following simple drawRect to demonstrate the issue
- (void)drawRect:(NSRect)dirtyRect
{
// Drawing code here.
NSRect bounds = [self bounds];
NSBezierPath *path = [NSBezierPath bezierPathWithRect:bounds];
[path stroke];
}
In the specific case of the Cinema Display having a resolution setting of
1280 x 800
the rectangle is not fully drawn every time. The top and right edges are
missing.
But sometimes they do draw. It seems quite arbitrary.
I have tested this with all other resolutions on the Cinema Display under
both standard
and HiDPI and also on the Samsung CRT. They all work just fine. Even the
Samsung at 1280 x 800.
(I have tried things such as NSIntegralRect but nothing works except to
change the resolution)
Why would this occur and only at that resolution and only on the Cinema
Display?
Any ideas for tracking it down, or working around it, gratefully received.
TIA and respect….
Peter
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Charlie Dickman
3tothe...@comcast.net
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Re: Tracking down SIGABRTs
It sounds to me like your xib (nib) file has been corrupted. For example, it's possible that you have somehow destroyed, say, a link between an object (view?) and its counterpart in your implementation or a link between an object like a button or a textfield and it's IBAction. I suggest that you check your xib thoroughly. On Apr 29, 2012, at 10:50 PM, Alex Zavatone wrote: I've had the joy of trying to reassemble my app which a co worker improved last week by moving it to storyboarding. What's popping up every now and then as I try to wire views together are instant SIGABRTs with no indication why this is happening. I'm currently stuck going from a TableViewController to another TableViewController and as soon as any TVC loads (even an empty one, even the same one), BLAM. The project is based off of the Tabbed Application template, has 4 tabs and all views work fine except one which has a Navigation controller that goes off to a TVC with a Nav bar at the top. When I try to nav to another TVC, as soon as it finishes displaying, (even with the same or an empty TVC), a SIGABRT happens. I've checked the table cell names, rebuilt the screen, checked Apple's samples and Ray W's book, been at this all day, to no avail. So, the big question is when a SIGABRT happens, how do each of you go about tracking it down? ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: https://lists.apple.com/mailman/options/cocoa-dev/3tothe4th%40comcast.net This email sent to 3tothe...@comcast.net Charlie Dickman 3tothe...@comcast.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: https://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: nstextfield question
You should have a look at the documentation for NSFormatter. You can define a formatter for your text field that gets called when a number of different things happen to/in the text field. You might also want to have a look at the delegate methods available for an NSTextField which get called when other things happen to/in the field. At first you might think that building a formatter for a field that already does what you want is redundant but you may find that the advantage of being able to get control at virtually all stages of editing is worth it. I certainly do. On Apr 27, 2012, at 12:12 PM, Rick C. wrote: Hi, I might be getting sleepy and overlooking the obvious, but I have a panel with a few text fields and I'm trying to figure out what gets called after entering a value into a text field and while it's still highlighted clicking it again? In my case when entering a value into one of my text fields (let's say 30) I append a string to that value (let's say Days). I do this in the action method. In my subclass in mouseDown I make it where if the value is 30 Days when clicking the text field I will remove the Days so the user can easily edit only the 30 and I append the Days once again in the action method. My problem is after clicking Enter for that text field if the user would try to edit it again without that text field ever losing focus the Days is not removed because mouseDown doesn't get called. And I haven't been able to figure out what does get called in this situation? Thanks, rc ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: https://lists.apple.com/mailman/options/cocoa-dev/3tothe4th%40comcast.net This email sent to 3tothe...@comcast.net Charlie Dickman 3tothe...@comcast.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: https://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: WWDC
Would you please take this interchange off the air? There is such a thing as private email. My inbox is choked with this stuff which is, in my opinion, off topic. On Apr 25, 2012, at 5:56 PM, Wade Tregaskis wrote: I filed a bug report under other asking them to increase the numbers of attendees at future WWDC. I thought this for a long time, but then came to the realisation that what's really valuable about WWDC just doesn't scale: access to Apple engineers. This wasn't always the case. The WWDC presentations used to be jealously guarded treasures. Now they're much more readily available. There's still some benefit to actually attending - you'll be able to access sessions from the conference indefinitely, rather than only for a year or two afterwards - and there are networking aspects and 3rd party events etc. But I think these pale in comparison to the exclusive utility of Apple engineer access. I'd even go so far as to say that today, if you're not spending most of your time in the labs or otherwise hunting down people to address specific issues, you're detracting from the common good (in the sense that there's a lot of others out there who missed out on WWDC tickets who would be doing just that, in your place). Likewise for people that walk into the labs and say things like So I just opened Xcode for the first time - how's it work?. As an Apple engineer working the labs a couple of years, I have to admit I really dreaded that level of question, on so many levels. I couldn't fathom how someone could throw down thousands of dollars to attend a conference yet not be enough into development to actually use and know a bit about the tools involved. Treating the developer labs like CS 101 is the most expensive class you'll ever pay for. Keep in mind that if you sufficiently impress an Apple engineer, whether by being generally clever / entertaining / generous / interesting - all largely functions of the type of problem you go to them with - then some will be willing to give you their direct contact details, and you can follow up with them after the conference. Maybe even on other issues, and some time later. And they can use that time to really dig into your issue, back in their office, and give you a precise answer you just can't get in a face-to-face meeting. ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: https://lists.apple.com/mailman/options/cocoa-dev/3tothe4th%40comcast.net This email sent to 3tothe...@comcast.net Charlie Dickman 3tothe...@comcast.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: https://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Tabbing between text fields
I have many textfields in an app and I receive the various delegate method messages as editing proceeds. I'd like to tab to the next text field when an acceptable value has been entered. Is there a way to do this from within one of the delegate methods? Charlie Dickman 3tothe...@comcast.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: https://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Fwd: Fielding a mouseDown in a textField
Begin forwarded message: From: Charlie Dickman 3tothe...@comcast.net Date: April 5, 2012 9:28:41 AM EDT To: Graham Cox graham@bigpond.com Subject: Re: Fielding a mouseDown in a textField Sorry. I am writing a Sudoku program and for a standard sudoku puzzle text fields do the job just fine. I am adding killer sudoku to it and I want to use the same text fields for it. To define the zones I want to use the ability of the text field to draw its background in different colors. When the program enters the mode for the user to enter a puzzle of his/her own I want to use a mouse click in a text field to present the color chooser and determine which field gets the color. I am able to accomplish this by going into a modal state waiting for a mouse click and then determining which field, if any, was clicked by comparing the location of the click to each field's frame until I find the appropriate one. It would be neater if I could field the click in the field directly. On Apr 5, 2012, at 1:27 AM, Graham Cox wrote: On 05/04/2012, at 9:51 AM, Charlie Dickman wrote: Good people, How do I go about fielding a mouseDown event in an NSTextField? For what purpose? NSTextField generally works without you having to do anything special. If you have some unusual requirement, you'll need to tell us what it is. --Graham Charlie Dickman 3tothe...@comcast.net Charlie Dickman 3tothe...@comcast.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: https://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Fielding a mouseDown in a textField
Good people, How do I go about fielding a mouseDown event in an NSTextField? Charlie Dickman 3tothe...@comcast.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: https://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
magic trackpad
I have instrumented a view in my application to respond to trackpad gestures. I am programming on a Mac Pro using a magic trackpad for gestures. The program gets no messages from gestures made on the trackpad. The mouse responds to trackpad finger moves and trackpad clicks. Is there a way to separate the trackpad messages from the mouse messages? Do mouse events have an attribute that distinguishes the trackpad from the mouse? What am I missing or can the trackpad only emulate the mouse? Charlie Dickman 3tothe...@comcast.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: OS X Desktop
Thanks Seth. I'll look into AppleScript. Can't you write to the .DS_Store file with root privilege? On Dec 7, 2010, at 1:10 AM, Seth Willits wrote: On Dec 6, 2010, at 3:11 PM, Charlie Dickman wrote: In the days of System 9 there was a thing known as the desktop database and a number of applications/utilities that remembered the location of things on the desktop and would restore a saved configuration on command. Heh. I made one. Clean Desk was the first program I ever sold. I made like $1200 off of that thing. Pretty nice chunk of change when you're 14. :-) For some time now I have been trying to find a similar OS X implementation that actually works. All of the ones I have tried mess up when trying to restore a saved desktop state; some put icons on top of other icons and some place the icons off the screen. I've tried searching the web for a description of where OS X keeps desktop icon placement information, how to read it and how to save it with no luck. It really hasn't changed. On OS 9 you had to get the position via AppleScript. It's the same now unless you dig into the private file format of .DS_Store (which I spent a lng time doing for DMG Canvas), but then you can only read the file, not write to it, so you still need to use AppleScript to get/set the file position reliably, unless you're going to force the user to quit Finder, rewrite the private file, and relaunch Finder. -- 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/3tothe4th%40comcast.net This email sent to 3tothe...@comcast.net Charlie Dickman 3tothe...@comcast.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
OS X Desktop
In the days of System 9 there was a thing known as the desktop database and a number of applications/utilities that remembered the location of things on the desktop and would restore a saved configuration on command. For some time now I have been trying to find a similar OS X implementation that actually works. All of the ones I have tried mess up when trying to restore a saved desktop state; some put icons on top of other icons and some place the icons off the screen. I've tried searching the web for a description of where OS X keeps desktop icon placement information, how to read it and how to save it with no luck. I was wondering if anyone on this list could help me in my quest. Charlie Dickman 3tothe...@comcast.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: Elapsed time vs sleep
Try using an NSTimer with a repeating timeout interval of, say, .001 (or anything smaller than your required accuracy), and countdown your time delta by the same amount each time the NSTimer fires and when you get to zero you'll have what you need. On Jul 26, 2010, at 4:56 AM, Matt Gough wrote: I need to calculate (with an accuracy of 0.1 of a second) a real-time time interval. This interval should: 1. Not be affected by whether the system has been put to sleep and woken up while timing. (i.e If I start the timer then sleep the Mac for an hour and wake it up again, my interval should be just over 60 minutes) 2. Not be affected by changes to the wall clock. (i.e If I start the timer, leave it for an hour and then set the wall clock back to the start time, my interval should be just over 60 minutes and not zero) Up to now, I have been using mach_absolute_time (which satisfies condition 2), but had not noticed that it could not satisfy condition 1. There are several other higher level versions (i.e Uptime, Microseconds), but they all seem to call down to mach_absolute_time. Obviously all the wall-clock based based (NSDate date], CFAbsoluteTimeGetCurrent) are also out of bounds due to condition 2. Have I missed something obvious, or is this just not doable? Thanks Matt Gough___ 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/3tothe4th%40comcast.net This email sent to 3tothe...@comcast.net Charlie Dickman 3tothe...@comcast.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: Elapsed time vs sleep
As long as the NSTimer firing interval is sufficiently small the NSTimer can be used. If the run loop is stalled for any significant: time _all_ timers will be inaccurate to some degree. The NSTimer works fine for animation and , e.g., alarm timers and they are consistent across platforms such as Mac Pros, iMacs, iPhones, etc. On Jul 26, 2010, at 12:12 PM, Kyle Sluder wrote: On Jul 26, 2010, at 8:32 AM, Charlie Dickman 3tothe...@comcast.net wrote: Try using an NSTimer with a repeating timeout interval of, say, .001 (or anything smaller than your required accuracy), and countdown your time delta by the same amount each time the NSTimer fires and when you get to zero you'll have what you need. NSTimer is not suitable for timekeeping of any significant resolution. NSTimer works by comparing the current time at the top of the runloop with the last time the timer was fired. Obviously, this is highly susceptible to anything that prevents the runloop from running at at least the timer interval—which on a modern multitasking operating system is quite likely. mach_absolute_time is certainly the way to go. The best advice I've seen out there is to listen for sleep/wake notifications from IOKit and record the system time there to figure out how much time has elapsed between the two. --Kyle Sluder Charlie Dickman 3tothe...@comcast.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: dynamically change circle size held in NSBezierPath
Use the transformUsingAffineTransform: to scale your path.
On Jul 25, 2010, at 4:53 PM, Shane wrote:
When a user decides to display a scatter plot, I iterate through all
my points and add the x,y points to an NSBezierPath as such with a
fixed width and height.
- (void) addCoord:(double) xval yCoord:(double) yval
{
NSRect rect = NSMakeRect(xval, yval, 1, 1);
[circlePath appendBezierPathWithOvalInRect:rect];
}
Then drawRect: gets called which draws my scatter plot coordinates.
The problem is that, my circles are already drawn to a certain size
and I need to scale my circles proportionately with my screen size and
I don't know what size this will be till drawRect: gets called (e.g.
the user may be resizing the window).
…
NSBezierPath *copyPath = [circlePath copy];
// Move to center of screen.
NSAffineTransform *xform = [NSAffineTransform transform];
[xform translateXBy:(bounds.size.width * 0.50)
yBy:(bounds.size.height * 0.50)];
// Scale proportionately to screen size.
[xform scaleBy:(xFactor / 2)];
[copyPath transformUsingAffineTransform:xform];
[[NSColor yellowColor] setStroke];
[copyPath stroke];
Anyone have suggestions on how to dynamically change my circle size
for the points which are all held within an NSBezierPath?
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Charlie Dickman
3tothe...@comcast.net
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Fast enumeration
In the past I have used the construct
NSEnumerator *_enumerator = [_array objectEnumerator];
id _id = nil;
while (nil != (_id = [_enumerator nextObject])) {
.
.
.
if (condition)
break;
}
if (nil == _id) {
.
.
.
}
to determine if the entire contents of _array had been investigated and, if
not, which object in _array met the condition.
When trying to use, instead,
for (id _id in _array) {
}
how, without reverting to effectively using an enumerator as in
id theID = nil;
for (id _id in _array) {
.
.
.
if (condition) {
theID = _id;
break;
}
.
.
.
if (nil != theID) {
.
.
.
}
does one accomplish the same thing?
Charlie Dickman
3tothe...@comcast.net
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Re: Debugger hangs?
I have turned the data formatters off and the debugger continues to get EXC_BAD_ACCESS while stepping through code. It then times out fetching data and everything is hosed. On Jul 21, 2010, at 12:03 PM, Nick Zitzmann wrote: On Jul 21, 2010, at 4:43 AM, sebi wrote: every few times I want to step through my code with Xcode's debugger it eventually refuses to work. I click on the Step Over button and then nothing happens. The variable window becomes empty and the three step buttons become greyed out. The Pause button reacts on clicks but doesn't do anything. Stop and restart still work. The Debugger Console doesn't show any output. It's really annoying when I'm hunting a bug several functions deep and then I have to start all over again because the debugger just stops working. All I can do is to set the breakpoint a bit later, try again and hope for the best. Does anyone else experience this behavior? Is there anything I can do? 1. This is a list for Cocoa, not Xcode. Next time, please ask Xcode questions on the Xcode list. 2. That said, this is almost always caused by data formatters. If you turn them off in the Debug menu, the problem should go away. 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/3tothe4th%40comcast.net This email sent to 3tothe...@comcast.net Charlie Dickman 3tothe...@comcast.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
NOAA data feeds
I apologize if this question is off topic; if it is could someone assist me with where I might find an answer. I'm looking for URL information and, if possible, examples of how to get NOAA weather advisory information via wifi into a Cocoa application. Any help would be gratefully appreciated. Charlie Dickman 3tothe...@comcast.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: Encrypting data in a Core Data SQL store for a Mac desktop app
I'm entering this thread late I know and for what it's worth this may be inappropriate for what you're trying to do ... There's an encryption framework available for free from Aquatic Prime (http://aquaticmac.com/) that is intended to manage registration keys but there's no reason I can see why it couldn't be used to protect data in general. I have used it to encrypt data within an app bundle that I don't want to be in clear text in the bundle resource (puzzle solutions). When a key is provided the app decrypts the data to read it into the program as binary data and use it. On Jul 18, 2010, at 3:27 PM, Dave Carrigan wrote: On Jul 18, 2010, at 11:25 AM, Jerry Krinock wrote: Why does the iPhone information you found not apply to Mac apps? Because iOS 4 offers the Data Protection feature that is not available on Mac OS. As far as I know, there is no equivalent for Mac OS. You can try to roll your own encryption, but it's not very easy. Notably, how you handle the encryption key is going to be susceptible to many kinds of attacks. -- Dave Carrigan d...@rudedog.org Seattle, WA, USA ___ 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/3tothe4th%40comcast.net This email sent to 3tothe...@comcast.net Charlie Dickman 3tothe...@comcast.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: case-insensitive but case-ordered sort
You should be able to accomplish what you want using NSPredicate. You can also use the C functions topper and tolower to detect and distinguish case differences. On Jul 20, 2010, at 1:39 PM, Roland King wrote: I want to sort some NSStrings in such a way that words group case insensitively, but within that group lowercase comes first, effectively I want the sort order of letters to be aAbBcCdDeEfF .. etc with everything outside the letter space sorting 'naturally' and coming after the letters (I actually don't care too much about the last bit honestly they can go where they like as long as it's outside the alphabet range). so myClass comes before MyClass which comes before yourClass which comes before YourClass First off is there a defined sort routine in or around NSString which does something like this (I found a kCFCompareForcedOrdering flag in CFString which seems to do something similar, but possibly backwards from what I want). I can restrict the domain to ASCII without any real issues but if there's something which is localized, that would be better. I thought perhaps that comparing the two strings case insensitively, returning that compare if they are not equal, but if they are equal, comparing them case sensitively and returning the inverse of that (remember I want a to beat A) would do what I want but I've failed to convince myself that actually works. Is there an NSString or CFString method I should be looking at or am I off to roll my own? ___ 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/3tothe4th%40comcast.net This email sent to 3tothe...@comcast.net Charlie Dickman 3tothe...@comcast.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: There must be a better way
I am implementing a view to allow the user to select his preferences from within the app while it is running instead of having to exit the app to use the settings app to do so and then restarting my app. The preferences view is controlled by the controller I am trying to define. It knows how to show the view and acts as both data source and delegate for the table view that contains the preference choices. The trigger to do this is a double tap of the primary view which is handled by code in the view.m. So the view needs to tell the controller to obtain the prefs. The controller sets the standard user defaults to communicate the users choices. On Dec 23, 2009, at 4:07 PM, David Duncan wrote: Is there a reason why your view so tightly bound to it's controller? Typically you define a protocol for any object to respond to and expose a delegate property to define that type of interface. Examples of this are very common in AppKit and UIKit, such as NS/UITableView or UIImagePickerController. -- David Duncan @ My iPhone On Dec 23, 2009, at 2:19 PM, Charlie Dickman 3tothe...@comcast.net wrote: In an iPod Touch/iPhone app where the view is in 1 xib and it's controller is in a different one, according to the view-controller-data paradigm, is there a better way to link the view to the controller than [(myView *) [[self view] setController: self] in the controller where controller has been declared id controller; . . . @property (nonatomic, assign) id controller; in myView.h with synthesize controller in myView.m? Charlie Dickman 3tothe...@comcast.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/david.duncan%40apple.com This email sent to david.dun...@apple.com Charlie Dickman 3tothe...@comcast.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: There must be a better way
Except the view and the controller are in separate xib's so they can't be connected in this way. On Dec 23, 2009, at 4:08 PM, Seth Willits wrote: On Dec 23, 2009, at 11:19 AM, Charlie Dickman wrote: In an iPod Touch/iPhone app where the view is in 1 xib and it's controller is in a different one, according to the view-controller-data paradigm, is there a better way to link the view to the controller than... Surely the controller is File's Owner in the view's xib, so just use an outlet on the view and connect it to the controller. -- 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/3tothe4th%40comcast.net This email sent to 3tothe...@comcast.net Charlie Dickman 3tothe...@comcast.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: [textView:shouldChangeTextInRanges:replacementStrings:] When does this type of event occur?
If I understand the question what happens is that you receive a mousedown event with the modifier key set in the event. It is then up to you how to process a modifier-click. Vertical selection is something, I think, you have to do for yourself. Perhaps there's some sample code at Apple's site. On Dec 23, 2009, at 4:58 PM, Dave DeLong wrote: In many apps, you can hold down the option key to change the cursor into a crosshair, and do a vertical selection. In addition, in apps like Pages, you can hold down the command key to do a non-contiguous selection. I'd imagine that both of these scenarios might result in that method getting invoked. Dave On Dec 23, 2009, at 2:53 PM, Iceberg-Dev wrote: What kind of event can trigger a non-linear selection to be replaced by multiple strings in different ranges? ___ 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/3tothe4th%40comcast.net This email sent to 3tothe...@comcast.net Charlie Dickman 3tothe...@comcast.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
There must be a better way
In an iPod Touch/iPhone app where the view is in 1 xib and it's controller is in a different one, according to the view-controller-data paradigm, is there a better way to link the view to the controller than [(myView *) [[self view] setController: self] in the controller where controller has been declared id controller; . . . @property (nonatomic, assign) id controller; in myView.h with synthesize controller in myView.m? Charlie Dickman 3tothe...@comcast.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
Linking xib's
I'm developing an iPhone app that has 2 xib's; 1 for the controller and 1 for the main window. This structure is based on that recommended in the Beginning iPhone Development book. When the didReceiveMemoryWarning notification is sent to the controller I want to invoke a method in the main view. This means linking an IBOutlet in the controller (which has its own xib) to a method defined in the view (which has its own xib). Apparently this CAN NOT be done when the xib's are loaded and must be done in the code itself. In OSX this can be accomplished by telling the NSBundle to load the necessary nib but simply loading an xib in the iPhone OS doesn't resolve the IBOutlet. Can someone instruct me or direct me to sample code that shows how this is accomplished? Charlie Dickman 3tothe...@comcast.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: Linking xib's
OK. From the controller I want to invoke a method in the view. In the controller I declare an id called myView... id myView; In the Controller's didReceiveMemoryWarning I want to call a method in the view thusly... [myView cleanMemory]; The question is how does the id myView get the address of myView. When both the controller and the view are in the same xib I have IB resolve the myView reference by tagging it with an IBOutlet tag so that IB will recognize it and then I ctrl-drag the view to the IBOutlet in the controller. The question is how do I provide this linkage when the controller and the view are in _different_ xib's? On Dec 17, 2009, at 1:02 PM, Quincey Morris wrote: On Dec 16, 2009, at 13:20, Charlie Dickman wrote: When the didReceiveMemoryWarning notification is sent to the controller I want to invoke a method in the main view. This means linking an IBOutlet in the controller (which has its own xib) to a method defined in the view (which has its own xib). Your question makes no sense because of the fuzziness of linking an IBOutlet ... to a method. IBOutlets point to objects, they don't link to methods, and they're only connected automatically during nib loading (even on MacOS), from the object with the outlet to another object, when: 1. both objects are in the same nib, or 2. the first object is File's Owner and the second object is in the owned nib file. Apparently this CAN NOT be done when the xib's are loaded and must be done in the code itself. In OSX this can be accomplished by telling the NSBundle to load the necessary nib but simply loading an xib in the iPhone OS doesn't resolve the IBOutlet. This is also a bit fuzzy, and appears to me to be false (concerning Mac OS X) as it stands. However, I'm not sure I understand what IBOutlet-setting mechanism you're describing. ___ 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/3tothe4th%40comcast.net This email sent to 3tothe...@comcast.net Charlie Dickman 3tothe...@comcast.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: Linking xib's
I have discovered the answer. The controller knows about the view without me doing any linkage. It is referenced using [self view] in the controller. On Dec 17, 2009, at 4:07 PM, Shawn Erickson wrote: On Thu, Dec 17, 2009 at 12:46 PM, Charlie Dickman 3tothe...@comcast.net wrote: The question is how do I provide this linkage when the controller and the view are in _different_ xib's? Who is the owner (aka loader) of the two xibs? If it is the same owning object then just hook up the outlets in the respective xibs as needed. If they don't have the same owner you are going to have to outline a little more of the relationships between the objects that load the two xibs. -Shawn Charlie Dickman 3tothe...@comcast.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
Sound on iTouch
Using System Sounds I am able to play sounds successfully in the iTouch Simulator but no sound is made when the app executes on my iTouch itself. There is a delay when the sound should be playing but no sound is heard. I have also installed Apple's SysSound sample code on the iTouch and it makes no sound either but works fine in the simulator. Can anyone help me with this? Charlie Dickman 3tothe...@comcast.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: Core Data Conundrum
Rick,
This can be done in a straightforward manner using C structures that contain
pointers to the C structures.
For example, you can define structures
typedef node _node {
segment *someSegment;
}
typedef struct _segment {
node node1;
node node2;
}
set node.segment to nil in the last segment and chain them together. Remember
to malloc each instance and free them when they are no longer needed.
This model can easily be transmogrified into Objective C objects.
On Dec 12, 2009, at 7:30 PM, Rick Mann wrote:
Hi. I'm trying to set up a model for a Node and a Segment. A Segment exists
between Nodes. Each Segment has a node1 and node2 attribute, and each Node
can have multiple Segments. I don't seem to be able to model this
relationship; I can have either node1 with an inverse of segments, or node 2,
but not both.
It's important for me to distinguish which end of a segment a particular Node
is associated with (imagine drawing a directed arrow). I feel like this
should be straightforward, but I'm stuck.
Any suggestions?
TIA,
Rick
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Charlie Dickman
3tothe...@comcast.net
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iPhone voice synthesis
Is there a way to do voice synthesis on the iPhone/iTouch like there is in OS X Cocoa using a [NS}voiceSynthesizer? Charlie Dickman 3tothe...@comcast.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
.h file won't load
I'm developing an app that has the Appkit.framework in the Frameworks project folder. I am trying to use the NSString Application Kit Additions which document that they are defined in the NSStringDrawing.h file in Appkit.framework yet when I #import NSStringDrawing.h or Appkit/NSStringDrawing.h the compiler reports that no such file can be found. Looking in the Appkit/headers folder it definitely is there. What do I have to do to get the compiler to recognize it? Charlie Dickman 3tothe...@comcast.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
String attributes in the iPhone SDK
I use the following code to determine the height and width of a string in the Snow Leopard version of an app NSMutableDictionary *textAttributes = [[[NSMutableDictionary alloc] init] autorelease]; [textAttributes setObject: [NSFont fontWithName: @Garamond Bold size: 24] forKey: NSFontAttributeName]; [textAttributes setObject: [NSColor blackColor] forKey: NSForegroundColorAttributeName]; NSString *text = [NSString stringWithFormat: @%d, h]; NSSize textSize = [faceText sizeWithAttributes: faceTextAttributes]; x -= faceTextSize.width / 2.; y -= faceTextSize.height / 2.; I'm tearing my hair out trying to figure out how to accomplish the same thing in the iPhone SDK. Can anybody help me? Charlie Dickman 3tothe...@comcast.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
Trying blocks
I am trying to implement a block in one of my apps. The code looks
like this...
BOOL (^fillWindow)(void) = ^(void) {
BOOL empty = YES;
int s = 0;
for (NSTextField *theTextField in textFieldArray) {
int textFieldValue = [[theTextField stringValue]
intValue];
empty = empty (textFieldValue == 0);
[thePuzzle replaceObjectAtIndex: s++ withObject: [NSNumber
numberWithInt: sudokuTextFieldValue]];
}
return empty;
};
if (!fillWindow()) {...
It compiles fine but the load fails with...
__NSConcreteGlobalBlock, referenced from:
___block_holder_tmp_1.1207 in Controller.o
ld: symbol(s) not found
collect2: ld returned 1 exit status
Can anyone explain this and help me with what I'm not doing or not
doing right?
Charlie Dickman
3tothe...@comcast.net
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Breakpoint bubbles
Breakpoint bubbles have started showing in the midst of my debugging window for each breakpoint I have set. What have I done to cause this and how do I stop it from happening? Charlie Dickman 3tothe...@comcast.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
NSView confusion
Nobody has anything to offer other than a nebulous try changing the declarations? I have tried everything I can think of and have tried the documentation I can find and I still can not figure out what is going on or what to do about it. I have an app that contains multiple NSView's which are all visible at the same time. They are all sub-classes of NSView but not of any of the others. Each has its initialize, initWithRect and drawRect methods invoked as it should. With the exception of the 1st one I defined, the workhorse view, no methods implemented in any of the others and declared in the respective .h files are visible to any of the other views at compile time. I import the appropriate .h files and invoke the method via [view method... and the compiler reports that no such method can be found. Yet if I invoke the method via [view performSelector:... at execution time it works just fine. I have no idea why the compile time recognition fails. Can someone explain to me what is going on and what I can do about it? Should there be a view hierarchy? If so, how structured? Also, how does one synchronize events with the update of the various views? I can instruct each view what to draw and it draws it just fine (I use lockFocus, etc. when drawing is external to drawRect) and the updated view is seen _eventually_ but I can not synchronize subsequent activity to happen after the appropriate display is seen. How can I accomplish this synchronization? And how can I force a view to update? Invoking [view display] has no effect on forcing the display toshow the latest update. Thanks for any help you can provide. Charlie Dickman [EMAIL PROTECTED] ___ 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 [EMAIL PROTECTED]
Re: NSView confusion
On Aug 20, 2008, at 11:08 AM, Joseph Kelly wrote: On Aug 20, 2008, at 7:25 AM, Charlie Dickman wrote: I have an app that contains multiple NSView's which are all visible at the same time. They are all sub-classes of NSView but not of any of the others. Each has its initialize, initWithRect and drawRect methods invoked as it should. With the exception of the 1st one I defined, the workhorse view, no methods implemented in any of the others and declared in the respective .h files are visible to any of the other views at compile time. I import the appropriate .h files and invoke the method via [view method... and the compiler reports that no such method can be found. Yet if I invoke the method via [view performSelector:... at execution time it works just fine. Sounds like a declaration issue :-) That may be what it sounds like but I've tried every which way I can to declare it differently to no avail. You get a compile error with: [view method]; What type is view, and does method contain a typo? Like maybe it's mehtod or maybe it requires an argument method:YES? I know this sounds pedantic, but we've all banged our heads around really dumb errors. view is an NSView and method is not spelled wrong. As I said, I can call it just fine with [view performSelector at run-time. There are cases where I've got a pointer to a superclass, but I know it's really a particular subclass, and I will simply cast the pointer to the subclass: NSView* obj = something; if ([obj respondsToSelector:@selector(method:withThingy:)]) [(MyViewClass*) obj method:YES withThingy:something]; // Shut up, compiler. Either way, what you want to do is post a snippet of the offending code, including variable declarations. Also, how does one synchronize events with the update of the various views? I can instruct each view what to draw and it draws it just fine (I use lockFocus, etc. when drawing is external to drawRect) and the updated view is seen _eventually_ but I can not synchronize subsequent activity to happen after the appropriate display is seen. How can I accomplish this synchronization? And how can I force a view to update? Invoking [view display] has no effect on forcing the display toshow the latest update. Calling [view setNeedsDisplay:YES] is the most common way of updating. Unless you're writing a 2d game, you'll want to use this 95% of the time. It flags the view for an asynchronous draw at a time when the event loop is idle, and I believe it is syncd up to the vbl. If drawing via this method is inefficient -- i.e. there's noticeable delay between when you call it and when you draw, this means either your drawInRect is using too much cpu, or your main thread is using too much cpu. Run Shark.app and see where the time is being spent. If you get your heavy processing out of the way and your drawing code is streamlined and it's still taking too long, then you could use [view display]; -- this does a synchronous draw + flush, also sync'd to the vbl, so it potentially could block your main thread up to 0.16 seconds, which is very bad. See https://developer.apple.com/documentation/Performance/Conceptual/Drawing/DrawingPerformance.html So why are you calling lockFocus? I call lock focus whenever I'm drawing outside the purview of drawRect. This is the way the documentation says to do it. And I am writing a 2d game and things that need to be clicked on are constantly being updated but the display does not match the internal game conditions so the appropriate objects can not be selected. Charlie Dickman [EMAIL PROTECTED] ___ 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 [EMAIL PROTECTED]
Re: Calling an object from a C function
What is the syntax? For example, how do I invoke the method - (int) myMethod: (int) int; In object myObject from within a C (not Objective C) function and make use of the result? In Objective C I would invoke [myObject myMethod: myInt]; Even better, how do I invoke - (myObject) myMethod: (myObject *) myObjectArg; an make use of the result in a C function? On Aug 19, 2008, at 6:52 PM, David Duncan wrote: On Aug 19, 2008, at 2:53 PM, Gilbert Mackall wrote: I have a C function from which I would like to call a method. I can't find any documents the cover how to do this. You call it just like you call any other method. Your C function will need to be compiled with the Obj-C compiler however. Easiest way to do this is to name the source file with a .m extension. -- 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/3tothe4th%40comcast.net This email sent to [EMAIL PROTECTED] Charlie Dickman [EMAIL PROTECTED] ___ 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 [EMAIL PROTECTED]
Re: Calling an object from a C function
Thanks to all who responded. I must have had a mental block against
this.
Now, how do I define things like 'self' and 'super' to a C program?
On Aug 19, 2008, at 7:38 PM, David Duncan wrote:
On Aug 19, 2008, at 4:28 PM, Charlie Dickman wrote:
from within a C (not Objective C) function and make use of the
result?
In Objective C I would invoke
[myObject myMethod: myInt];
You invoke it exactly the same way. There is no difference. But you
need to compile as Obj-C.
int foo(id bar) { [bar foobaz]; }
--
David Duncan
Apple DTS Animation and Printing
Charlie Dickman
[EMAIL PROTECTED]
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NSView confusion
I have tried everything I can think of and have tried the documentation I can find and I still can not figure out what is going on or what to do about it. I have an app that contains multiple NSView's which are all visible at the same time. They are all sub-classes of NSView but not of any of the others. Each has its initialize, initWithRect and drawRect methods invoked as it should. With the exception of the 1st one I defined, the workhorse view, no methods implemented in any of the others and declared in the respective .h files are visible to any of the other views at compile time. I import the appropriate .h files and invoke the method via [view method... and the compiler reports that no such method can be found. Yet if I invoke the method via [view performSelector:... at execution time it works just fine. I have no idea why the compile time recognition fails. Can someone explain to me what is going on and what I can do about it? Should there be a view hierarchy? If so, how structured? Also, how does one synchronize events with the update of the various views? I can instruct each view what to draw and it draws it just fine (I use lockFocus, etc. when drawing is external to drawRect) and the updated view is seen _eventually_ but I can not synchronize subsequent activity to happen after the appropriate display is seen. How can I accomplish this synchronization? And how can I force a view to update? Invoking [view display] has no effect on forcing the display toshow the latest update. Thanks for any help you can provide. ___ 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 [EMAIL PROTECTED]
creating a voice
Can anybody direct me to documentation and or example code that explains/shows how to implement a voice for use in OS X? Charlie Dickman [EMAIL PROTECTED] ___ 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 [EMAIL PROTECTED]
