Re: list open application windows
On 12 May '08, at 8:15 PM, Ben Lowndes wrote: I'm a cocoa newbie, so I may be missing something obvious here: I'd like to get a list of open windows for all currently running applications. Nothing personal, but people seem to ask this question here about once a week ... and I just have to ask why? What kind of application are you working on? I can't think of a compelling usage for this, other than writing some kind of window-management utility (or malware...) And BTW, if you search the list archives you'll find easily 100 messages on this exact topic just in the past two or three months. —Jens smime.p7s Description: S/MIME cryptographic signature ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to [EMAIL PROTECTED]
Re: Shipping common app frameworks.
Are your users necessarily going to have more than one of your applications installed? Remember that when you put the frameworks in a common directory, as opposed to inside the app bundle you lose the ability for an application to be used by a non-admin user, as well as the ease of a drag and drop install. Omar Qazi Hello, Galaxy! 1.310.294.1593 On May 12, 2008, at 11:53 AM, David Springer wrote: Folks, We need to ship some frameworks that are common to a few of our apps. The question, of course, is where to put these, and how to bundle them with apps so downloads, etc. are not huge and bloated. I'd like to hear other's experience with this. Do you put common frameworks in a place such as /Library/Frameworks, or do you put them in your own app support directory? How do you handle things like a drag-to-install and move-to-trash to uninstall (or can you with common frameworks)? smime.p7s Description: S/MIME cryptographic signature ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to [EMAIL PROTECTED]
Re: Anybody using Pantomime or mail-core framework?
On 12 May '08, at 10:57 PM, Omar Qazi wrote: I have an app that sends emails, and what I did is have it post the message parameters to my server. Then, a PHP page processes the parameters and sends mail using PHP. Cool! What's the address of your PHP script? I have a couple million V**gr* ads I need to send untraceably... ;-) No, what I meant to say was, this seems like the sort of thing that could be exploited by spammers, and get you blacklisted from your hosting site, so watch out. —Jens smime.p7s Description: S/MIME cryptographic signature ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to [EMAIL PROTECTED]
Re: list open application windows
On Tue, May 13, 2008 at 4:01 PM, Jens Alfke [EMAIL PROTECTED] wrote: I'm a cocoa newbie, so I may be missing something obvious here: I'd like to get a list of open windows for all currently running applications. Nothing personal, but people seem to ask this question here about once a week ... and I just have to ask why? What kind of application are you working on? I can't think of a compelling usage for this, other than writing some kind of window-management utility (or malware...) Yes, exactly: I'm working on a window management utility (or I'm trying to...). And BTW, if you search the list archives you'll find easily 100 messages on this exact topic just in the past two or three months. Being new to Cocoa, at first it's difficult to phrase the question correctly when searching for the answer; so for the benefit of future searchers the solution seems to lie in using the accessability API or an input manager. Is that correct? Thanks, Ben ___ 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: Anybody using Pantomime or mail-core framework?
Well in my case, the script only let's you send email in a specific format (i.e. Hey __, Your friend ___ sent you _), but thats a good point. It's not an unsolvable problem though, all you need is some way to make sure the request is really coming from your application, like assigning a client certificate when they activate or something. Omar Qazi Hello, Galaxy! 1.310.294.1593 On May 12, 2008, at 11:07 PM, Jens Alfke wrote: On 12 May '08, at 10:57 PM, Omar Qazi wrote: I have an app that sends emails, and what I did is have it post the message parameters to my server. Then, a PHP page processes the parameters and sends mail using PHP. Cool! What's the address of your PHP script? I have a couple million V**gr* ads I need to send untraceably... ;-) No, what I meant to say was, this seems like the sort of thing that could be exploited by spammers, and get you blacklisted from your hosting site, so watch out. —Jens smime.p7s Description: S/MIME cryptographic signature ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to [EMAIL PROTECTED]
Re: PDFView query
Thanks for the pointerCompletely over looked the PDFThumbNailView Regards, Amrit On Mon, May 12, 2008 at 12:01 PM, Antonio Nunes [EMAIL PROTECTED] wrote: On May 12, 2008, at 7:20 AM, Amrit Majumdar wrote: I need to display all the pages of the pdf document in a couple of rows. Use a PDFThumbnailView António --- And you would accept the seasons of your heart, even as you have always accepted the seasons that pass over your field. --Kahlil Gibran --- -- Best Regards, Amrit. ___ 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]
Create NSStrings from a mapped NSData object - safe?
Salutations! I'm parsing a rather large text-file (usually 20MB) and in doing so I'm iterating over its lines with [String getParagraphStart]. I've found a rather noticeable speed-up in the parsing operation if I create the string in question from an NSData object (created via initWithContentsOfMappedFile) using [String initWithData:encoding:]. Now to the questions: 1) Is this safe if the file in question is being moved / deleted / edited during parsing? 2) Are substrings created from the original string (e.g. substringWithRange etc.) still backed properly after the original string and the NSData object are released? Thanks for any pointers, Daniel. ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to [EMAIL PROTECTED]
Re: Create NSStrings from a mapped NSData object - safe?
On May 13, 2008, at 12:38 AM, Daniel Vollmer wrote: Salutations! I'm parsing a rather large text-file (usually 20MB) and in doing so I'm iterating over its lines with [String getParagraphStart]. I've found a rather noticeable speed-up in the parsing operation if I create the string in question from an NSData object (created via initWithContentsOfMappedFile) using [String initWithData:encoding:]. Now to the questions: 1) Is this safe if the file in question is being moved / deleted / edited during parsing? No, the system might not map the entire file (depending on size and available resources or implementation choices) so when you read a new, not yet mapped, or previously discarded page it will come from the current state of the file, be it untouched, modified, or deleted. Basically there's no guarantee you'll get the same data that was in the file when you first mapped it if something else modifies or destroys it while it's mapped. 2) Are substrings created from the original string (e.g. substringWithRange etc.) still backed properly after the original string and the NSData object are released? Yes, they're newly created and individual string objects. ___ 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: NSURL urlWithString return nil
– stringByAddingPercentEscapesUsingEncoding: – stringByReplacingPercentEscapesUsingEncoding: wp Thank you it works fine (and thanks to everyone who replied)___ 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: Getting Pixel Data From CIImage
Hi,
If you are using Leopard (10.5), you could do something like this:
CIImage* imageBlurred = .
NSBitmapImageRep* bitmap = [[[NSBitmapImageRep alloc] initWithCIImage:
imageBlurred] autorelease];
// Getting pixels data
// this returns a pointer to the pixel data
[bitmap bitmapData]
regards
Nikolai Hellwig
Am 13.05.2008 um 03:06 schrieb Bridger Maxwell:
Hey,
I am trying as hard as I can to get pixel data from a CIImage, but am
failing, pretty miserably. I am using
render:toBitmap:rowBytes:bounds:format:colorSpace: from CIContext and
it seems to work, but doesn't really. I get data in my int*
pointer, but it never changes! What am I doing wrong? I posted my
code. The part in need of assistance is near the bottom of
(void)captureOutput. I would greatly appreciate your help.
Thank You,
Bridger Maxwell
- (void)captureOutput:(QTCaptureOutput *)captureOutput
didOutputVideoFrame:(CVImageBufferRef)videoFrame
withSampleBuffer:(QTSampleBuffer *)sampleBuffer
fromConnection:(QTCaptureConnection *)connection
{
CIImage* image = [CIImage imageWithCVImageBuffer:videoFrame];
[monoChromeFilter setValue:image forKey:@inputImage]; //First we
monochrome it (only black and white
//[smoothingFilter setValue:[monoChromeFilter
valueForKey:@outputImage] forKey:@inputImage];
if (needsNewBackground) { //If the flag has been raised we will
capture a new background
[backgroundFilter setValue:[monoChromeFilter
valueForKey:@outputImage] forKey:@inputBackgroundImage];
if (videoDeviceInput) {
needsNewBackground = NO;
}
}
[backgroundFilter setValue:[monoChromeFilter
valueForKey:@outputImage] forKey:@inputImage]; //Now we subtract
the background from the monochrome image
[colorCorrectionFilter setValue:[backgroundFilter
valueForKey:@outputImage] forKey:@inputImage];
CIImage* finalImage = [colorCorrectionFilter
valueForKey:@outputImage];
size_t rowBytes = [self optimalRowBytesForWidth:[finalImage
extent].size.width bytesPerPixel:4];
int* imageData;
[[[NSGraphicsContext currentContext] CIContext] render:finalImage
toBitmap:imageData rowBytes:rowBytes
bounds:[finalImage extent]
format:kCIFormatARGB8
colorSpace:CGColorSpaceCreateWithName(kCGColorSpaceGenericGray)];
blobDetector-computeBlobs(imageData);
NSLog(@On Frame %i there are %i blobs. Sample byte 5:
%i,frameCount++,blobDetector-getBlobNb(),imageData[19]);
[outputView setImage:finalImage];
[outputView setNeedsDisplay:YES];
//CIContext* theContext = [outputView ciContext];
}
- (void) drawBlobsOnCIImage:(CIImage *)image {
for (int n=0 ; n blobDetector-getBlobNb() ; n++)
{
*blob = blobDetector-getBlob(n);
if (blob-isOk())
{
NSRect rectangle = NSMakeRect(blob-xMin, blob-yMin, blob-xMax -
blob-xMin , blob-yMax - blob-yMin);
}
}
}
- (size_t)optimalRowBytesForWidth: (size_t)width bytesPerPixel:
(size_t)bytesPerPixel
{
size_t rowBytes = width * bytesPerPixel;
//Widen rowBytes out to a integer multiple of 16 bytes
rowBytes = (rowBytes + 15) ~15;
//Make sure we are not an even power of 2 wide.
//Will loop a few times for rowBytes = 16.
while( 0 == (rowBytes (rowBytes - 1) ) )
rowBytes += 16;
return rowBytes;
}
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Re: list open application windows
Le 13 mai 08 à 08:01, Jens Alfke a écrit : On 12 May '08, at 8:15 PM, Ben Lowndes wrote: I'm a cocoa newbie, so I may be missing something obvious here: I'd like to get a list of open windows for all currently running applications. Nothing personal, but people seem to ask this question here about once a week ... and I just have to ask why? What kind of application are you working on? I can't think of a compelling usage for this, other than writing some kind of window-management utility (or malware...) And BTW, if you search the list archives you'll find easily 100 messages on this exact topic just in the past two or three months. I don't know what the OP want to do, but just to answer your question, a screenshot utility may need this kind of functionality (see GrabFS for example), and that's exactly what the CGWindow API does. ___ 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: Controller Cannot Be nil on binding NSTextField
on 2008-05-13 12:06 AM, Johnny Lundy at [EMAIL PROTECTED] wrote: I still have to do the crazy self.hoursString = [[NSNumber numberWithInt: self.hours] stringValue]; To get a string from an int for the textField to bind to. If I bind it to the model deadline.hours, which is a scalar int, it displays zero while NSLog is merrily displaying 23 from the same variable. Is converting the int to a NSNumber and then to a string make sense here? Seems roundabout. Look at the reference documentation for +[NSString stringWithFormat:], and the String Programming Guide for Cocoa (particularly the Formatting String Objects and String Format Specifiers sections). -- Bill Cheeseman - [EMAIL PROTECTED] Quechee Software, Quechee, Vermont, USA www.quecheesoftware.com PreFab Software - www.prefabsoftware.com ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to [EMAIL PROTECTED]
Re: Core data model, bindings advice.
I think I haven't explained myself properly. I already have the bindings worked out much as you have below however I can't achieve the functionality I'm after using the standard method. If my transaction entity has; memo (string) date (date) amount (NSNumber) fromAccount (reverse of debit) toAccount (reverse of credit) And my transaction tableview has date memo account transferred to/from credit amount debit amount Then it's not a direct match between entity and view. I've partially acheived this by using a fetched property in the account entity that returns all transactions with the account in the from or to field however this means I can't add: to the transaction list. How would I best handle translating the data from the entity model to the view model? I see two options; 1) Munge around with Valuetransformers. If toAccount = selected account then credit = amount, debit = blank, opposite if fromAccount = selected account. I still have the add: issue. 2) Write my own datasource for the transactionView and do away with bindings for this view. This may also have the benefit of solving the add to the array issue brought about by using a fetched property which gives me an immutable contentArray. 3) Would a filter be more appropriate? Is it possible to filter the transaction list and use the account selection (from the tree view) in the filter predicate? On 13/05/2008, at 12:27 AM, Steven Huey wrote: Steven, In my app I have a similar setup, although without the detail view. I have the Table Column of my NSOutlineView bound to a NSTreeController using the Controller Key arrangedObjects and the Model Key Path set to the name of a method in the custom NSManagedObject subclass that my NSTreeController is managing. The table columns of my NSTableView are bound to an NSArrayController whose content set is bound to my NSTreeController's selection. Each column is then bound to a property of the entity returned by the array controller's content. I think you could bind your detail view similarly, to the current selection of your array controller. Take a look at: http://homepage.mac.com/mmalc/CocoaExamples/controllers.html for lots of great examples of how to use bindings. Best regards, Steven Huey -- Steven Huey Software - http://www.stevenhuey.com On May 12, 2008, at 8:03 AM, Steven Hamilton wrote: Hi folks, Continuing my learning into Cocoa I'm developing a personal finance application. An admirable project I believe since none available suit my purposes and it always pays to have a project that one would use to learn from. I have a simple core data model consisting of AccountGroup, Account, Transaction and I've jammied these all into a window with outline view, transaction tableview and detail at the bottom. The model looks like this; AccountGroup (Asset, expense, income etc)name (string) accounts (relationship to Account)Account (Bank, Savings etc)name (string) transactions (fetched properties explained below) credit (relationship to transaction) debit (relationship to transaction)Transaction memo (string) date (date) amount (NSNumber) fromAccount (reverse of debit) toAccount (reverse of credit) I believe this to be the true model as a transaction is an object and is of an amount that goes from somewhere to somewhere. This is double entry accounting. My problem is in presenting this to the user. Problem 1 Most finance apps, and mine included you select an account from a list (my outlineview) and it then displays all the transactions involved. So I created a fetched property with a predicate that included any transactions that had the selected account name in either fromAccount or toAccount. This works to a point. My tableview displays all the transactions of the selected account but since its a fetched properties (contentArray) the list isn't the true transaction array (contentSet), therefore I cannot add to it using the bound detail table below it. I must admit the bindings for this are really playing with my head. I struggled quite immensely getting the selection from the treecontroller and in the end it started working without me fully understanding why. I have further complications to come as I have the decide whether the transaction amount is a debit or credit (based on the from/to account relationships) and then display the amount in the correct column and then also work out a way to add transactions back in like this. It seems even though I'm set on what I believe to be the correct data model for this, the method of which a user expects to see this information is a little too different. Does anyone have any advice? Have I talked too much? ___ 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
WWDC 2008 Sessions PDF Generator
Hi, I'm a regular reader but not a too regular poster here. Well, I think it's time to give something back :) It's not much, but here we go: Attending WWDC is great, but I need to print the available sessions. Just looking at them online is not enough, I need to have a piece of paper to actually circle the ones I like. Some browsers (Safari, for example) have trouble printing Ajax pages. So I wrote a Ruby script that downloads the sessions.xml and creates a PDF from it. You can find it here: http://blog.springenwerk.com/2008/05/wwdc-2008-session-pdf-generator-in-ruby.html I hope this is helpful to some of you guys! - Johannes -- http://blog.springenwerk.com ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to [EMAIL PROTECTED]
Re: Controller Cannot Be nil on binding NSTextField
On 13 May 2008, at 2:06 pm, Johnny Lundy wrote: It works now, but I still have to do the crazy self.hoursString = [[NSNumber numberWithInt: self.hours] stringValue]; Or you could just do: self.hoursString = [NSString stringWithFormat:@%d, self.hours]; G. ___ 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]
NSDictionaryController with NSTableView and sorting of numeric data
Hello list I have bound an NSDictionaryController to an NSTableView. The keys in my bound dictionary are numeric strings 1... n The dictionary keys and values display okay but the sorting of the key column is not numeric but alphabetic. The value column sorts fine for objects of type NSNumber. I have tried using NSNumber keys and an NSValueTransformer subclass but the controller seems to need an NSString key. I know I am being dumb here. Please put me out of my misery. Thanks Jonathan ___ 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]
How to deal with property and Undo?
When reading through the doc for Document based application the advice is to implement undo by making setter invoking prepareInvocationWithTarget. Is there a way to have this done automatically with properties. For now it looks to me like I have to remove all @synthetize directive and rewrite accessors for this. Best laurent ___ 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]
how to change the rect of an edit text in each cell on an NSTableView?
I really need your help. I try to make a view which is like a table view, and which has a text edit area when focus comes to the view. And the editing area must change its frame depending on the column. The editing area moves to the next, previous, above, and below cell when user types tab or return key. User also can point a cell with the mouse to select the edit area in the cell. The size of an editing area is about half width and half height of the cell, and the other is the same size of the cell. NSTableView can have an editing area but its size becomes its text size. At first I came to mind to make a subclass of NSMatrix, but it requests to have the same size of cell. But the column width of my view is various. Then I try to make a subclass of NSTableView. But at this point I was wondering if it could have different size of editing area. If so, how? Any suggestion and ideas would be VERY appreciated. Alternative also would be grateful. Thank you, Norio ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to [EMAIL PROTECTED]
Controller Cannot Be nil on binding NSTextField
Thanks Bill and Graham. D'oh! I've got dozens of stringWithFormat calls in my main app and this never occurred to me. I was thinking that somehow an NSTextField would take a number and convert it itself. This will let me merge all three components of the time into one string with separator colons and the whole shebang. I was looking to use NSDate to get an hh:mm:ss result that allowed hours 24, but I do not think that is possible, so I went the NSCalendarDate route. I remember having the same problem in AppleScript with the time portion of a date. Thanks a bunch for taking time to clue me in. Johnny On May 13, 2008, at 7:27 AM, [EMAIL PROTECTED] wrote: From: Bill Cheeseman [EMAIL PROTECTED] Subject: Re: Controller Cannot Be nil on binding NSTextField To: Cocoa-Dev Mail cocoa-dev@lists.apple.com Message-ID: [EMAIL PROTECTED] Content-Type: text/plain; charset=US-ASCII on 2008-05-13 12:06 AM, Johnny Lundy at [EMAIL PROTECTED] wrote: I still have to do the crazy self.hoursString = [[NSNumber numberWithInt: self.hours] stringValue]; To get a string from an int for the textField to bind to. If I bind it to the model deadline.hours, which is a scalar int, it displays zero while NSLog is merrily displaying 23 from the same variable. Is converting the int to a NSNumber and then to a string make sense here? Seems roundabout. Look at the reference documentation for +[NSString stringWithFormat:], and the String Programming Guide for Cocoa (particularly the Formatting String Objects and String Format Specifiers sections). -- Bill Cheeseman - [EMAIL PROTECTED] Quechee Software, Quechee, Vermont, USA www.quecheesoftware.com PreFab Software - www.prefabsoftware.com ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to [EMAIL PROTECTED]
Re: Create NSStrings from a mapped NSData object - safe?
On 12 May '08, at 11:38 PM, Daniel Vollmer wrote: I'm parsing a rather large text-file (usually 20MB) and in doing so I'm iterating over its lines with [String getParagraphStart]. I've found a rather noticeable speed-up in the parsing operation if I create the string in question from an NSData object (created via initWithContentsOfMappedFile) using [String initWithData:encoding:]. It sounds like you're creating a single NSString containing the entire contents of the file, then? Now to the questions: 1) Is this safe if the file in question is being moved / deleted / edited during parsing? The string initializer you're using copies the data. This might just involve calling -copy on the NSData instead of copying the bytes into a new buffer; I'm not sure. If the NSString made its own copy of the bytes, then you're totally safe; the data from the mapped file isn't being used at all anymore. If it's using the bytes in the NSData, you're mostly safe. Moving or deleting the mapped file won't break the mapping (a deleted file isn't actually deleted until all open file descriptors close.) A typical safe-save won't alter the data either, since it creates a new file and then deletes the old one. The only problem would be if something overwrote the file in place, in which case the overwritten data would suddenly show up in the NSData. 2) Are substrings created from the original string (e.g. substringWithRange etc.) still backed properly after the original string and the NSData object are released? Yes. Even if the NSString is still using the NSData's contents for its buffer, it retained them, so releasing the NSData won't make it go away until the string is done with it. —Jens smime.p7s Description: S/MIME cryptographic signature ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to [EMAIL PROTECTED]
Re: Create NSStrings from a mapped NSData object - safe?
On 13 May '08, at 12:15 AM, Michael Vannorsdel wrote: Basically there's no guarantee you'll get the same data that was in the file when you first mapped it if something else modifies or destroys it while it's mapped. You're correct about modifications, but not about deletions. An open file descriptor counts as a link to a file, so the unlink(2) system call will not actually delete the file from disk because there's still a link to it. Once you close the mapped file, the last link goes away and then the file is actually deleted. This is sometimes used as a technique for creating anonymous temporary files — create a temp file with open(2), then unlink(2) it so it doesn't exist in the directory tree anymore, then its yours to write/ read until you close(2) it. While we're on the topic, it's worth noting that memory-mapping files on removable or network filesystems can be dangerous. If you read/ write a mapped memory location, and the kernel has to page it in, but the file's filesystem is no longer accessible due to a network issue or a yanked USB cable ... you get a bus-error. I've seen discussion of ways to handle this by installing a signal handler whenever you access mapped memory, but it would be pretty tricky to pull off. The conclusion was that it's only safe to memory-map files that are either (a) on the boot filesystem, or (b) in the user's home directory. (The latter might be on a networked filesystem, but if it ever gets disconnected, most of the upper layers of the OS and applications will be hosed anyway...) —Jens smime.p7s Description: S/MIME cryptographic signature ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to [EMAIL PROTECTED]
Re: How to deal with property and Undo?
In which case you need to set up KVO of the properties in a controller object of some kind and use that to register the undos. Of course, Core Data does this all automatically :) On 13 May 2008, at 13:47, Laurent Cerveau wrote: When reading through the doc for Document based application the advice is to implement undo by making setter invoking prepareInvocationWithTarget. Is there a way to have this done automatically with properties. For now it looks to me like I have to remove all @synthetize directive and rewrite accessors for this. Best laurent ___ 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/cocoadev%40mikeabdullah.net This email sent to [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: list open application windows
On 12 May '08, at 11:13 PM, Ben Lowndes wrote: Yes, exactly: I'm working on a window management utility (or I'm trying to...). This might not be a good introductory Cocoa project. My hunch is that doing anything interesting with/to the windows will become either difficult or impossible [without using Top Seekrit internal window- server APIs.] It depends on what you want to do, of course. —Jens smime.p7s Description: S/MIME cryptographic signature ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to [EMAIL PROTECTED]
Remote Contol Wrapper
Hi, I am a Cocoa developer currently coding a user interface using a custom IR Remote extending the functionalities of Apple one. My company have a partnership with a remote maker, and we asked them to make a remote using Apple Remote IR codes, plus some custom ones. Unfortunately, we have not been able to get the events back using the Remote Control Wrapper. Do you know the reason why IO HID API is not providing the customized events sent by the remote, and eventually how can I access them. I saw in Remote Control Wrapper code that you have been able to add support for Keyspan remote. Should I use a similar path to add support for my Remote ? Regards, Yvan BARTHÉLEMY___ 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: list open application windows
Hi Ben, Take a look at the new Leopard only CGWindowListCopyWindowInfo method. Its probably what you are looking for and is able to provide a list of windows in z-order, including rect position (screen relative of course), pid, title etc. You cant modify windows using this API, but you'll be able to query them at least. Enjoy. -- John Clayton http://www.coderage-software.com/ On May 13, 2008, at 8:13 AM, Ben Lowndes wrote: On Tue, May 13, 2008 at 4:01 PM, Jens Alfke [EMAIL PROTECTED] wrote: I'm a cocoa newbie, so I may be missing something obvious here: I'd like to get a list of open windows for all currently running applications. Nothing personal, but people seem to ask this question here about once a week ... and I just have to ask why? What kind of application are you working on? I can't think of a compelling usage for this, other than writing some kind of window-management utility (or malware...) Yes, exactly: I'm working on a window management utility (or I'm trying to...). And BTW, if you search the list archives you'll find easily 100 messages on this exact topic just in the past two or three months. Being new to Cocoa, at first it's difficult to phrase the question correctly when searching for the answer; so for the benefit of future searchers the solution seems to lie in using the accessability API or an input manager. Is that correct? Thanks, Ben ___ 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/john_clayton %40mac.com This email sent to [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: Create NSStrings from a mapped NSData object - safe?
On May 13, 2008, at 8:08 AM, Jens Alfke wrote: While we're on the topic, it's worth noting that memory-mapping files on removable or network filesystems can be dangerous. If you read/write a mapped memory location, and the kernel has to page it in, but the file's filesystem is no longer accessible due to a network issue or a yanked USB cable ... you get a bus-error. I've seen discussion of ways to handle this by installing a signal handler whenever you access mapped memory, but it would be pretty tricky to pull off. The conclusion was that it's only safe to memory- map files that are either (a) on the boot filesystem, or (b) in the user's home directory. (The latter might be on a networked filesystem, but if it ever gets disconnected, most of the upper layers of the OS and applications will be hosed anyway...) I would add, (c) files that are on the same volume as the executable; for example, files in your application bundle or one of your framework bundles should be safe to map in. The reasoning here is that if a volume containing an executable your application is currently using goes away, the application is dead anyway--in fact, the executables themselves are usually mapped. I'm not so certain about (b); it may be possible to survive the loss or temporary absence of the user's home directory, depending on what your application is doing. However, the files I typically have wanted to map in have been fixed data files that are part of the system, the application, or one of its frameworks, for which the home directory would be an unlikely location anyway. Douglas Davidson ___ 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]
Rotating a CATextLayer
Rotating a text layer to any angle with CATransform3DMakeRotation in a transaction goes fine, unless you stop rotating at 135 or 315 degrees clockwise from the vertical normal. In those two cases bounds.size.width and bounds.size.height appear to exchange values, so that the string gets clipped. This has got me puzzled for days now, and wondering if it's a bug in CA. Any comments greatly appreciated. The setup is very simple. A CALayer *rL, including: rL.layoutManager = [CAConstraintLayoutManager layoutManager]; Add a sublayer to rL: CATextLayer *tL, with a: tL.string = (NSString *)@This is a long string; Color the border of tL, so as to see what happens to tL when rotating. Fix tL in the center of rL for an axis of rotation: [tL addConstraint:[CAConstraint constraintWithAttribute:kCAConstraintMidX relativeTo:@superlayer attribute:kCAConstraintMidX ]]; [tL addConstraint:[CAConstraint constraintWithAttribute:kCAConstraintMidY relativeTo:@superlayer attribute:kCAConstraintMidY ]]; Rotate tL: [CATransaction begin]; [CATransaction setValue:[NSNumber numberWithFloat:3.0f] forKey:kCATransactionAnimationDuration]; tL.transform = CATransform3DMakeRotation(phi, 0.0, 0.0, 1.0); [CATransaction commit]; That goes well, except when stopping the rotation at phi = M_PI_2 + M_PI_4 (135 degrees), or phi = M_PI + M_PI_2 + M_PI_4 (315 degrees, which is opposite 135 degrees). Thanks. Regards, William ___ 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: @property question
No, not using bindings, but good point yes, the param type was a typo.
While everything 'seems' to be working now, the info that I got in the
debugger when I was seeing problems looked suspiciously like the state
of things when an object has been released but is then referenced. I
need to dig deeper and make sure that I'm not going to be bitten later
on - like in production code...
Thanks for all of the input.
-Craig
On May 12, 2008, at 5:20 PM, Quincey Morris wrote:
On May 12, 2008, at 15:19, Craig Hopson wrote:
I think I've been the victim of some side effect that I cannot
track down. With no other changes, I tried again with each style,
[ self.fieldArray addObject:inFoo ];
[ fieldArray addObject:inFoo ];
replacing all occurrences for each test, and both work - what I
would have expected.
Incidentally, neither version is KVO-compliant. If you happen to
have something (e.g. a NSArrayController) bound to the array
property, to show Foos in the user interface, the effect of
addObject (and therefore addFoo) will be to leave what's displayed
out of date. This could possibly lead to unpredictable behavior or a
crash.
The KVO-compliant way to add something to an array property would be
something like this:
- (void)addFoo:( Bar* )inFoo
{
[ [self mutableArrayValueForKey:@fieldArray] addObject:inFoo ];
}
P.S. I just noticed that the inFoo looks like it needs to be a Foo*,
not a Bar*. I assume this was just a typo when you stripped down
your example for posting?
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NSAlert beeping
I've got a situation where an alert, attached as a sheet, just beeps when it's called (instead of displaying and interacting with the user.) I'm about 99.99% certain that this is being caused by a sheet that comes up prior to the alert (not at the same time -- the previous sheet is long gone, theoretically, from the window when this alert is called.) Weird thing is that the exact same code in a different class works a- ok, so I'm a little mystified, but knowing why an alert would just beep, rather than come up, would be a great start. The previous sheet is a progress metre, which comes up and goes away without any user involvement. If I call the progress metre twice, there's another beep and the panel is displayed detached from the window. The endpanel function, which does get called, contains nothing more than an orderOut:nil. Adding a close call neither helps nor hinders. So, what have I done to my window with this first sheet which causes subsequent alerts to beep instead of displaying? Thanks! dale -- Dale Jensen Ntractive, LLC [EMAIL PROTECTED] http://www.ntractive.com ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to [EMAIL PROTECTED]
Fullscreen on secondary displays
Hello everyone,
I have an app right now that I've added a fullscreen mode to. RIght
now it works for fullscreen when I go to fullscreen on the main
display. If I attempt to do this on the secondary display, I get a
blank screen.
I think one problem is probably the way I am identifying which screen
to use -- I use [NSWindow screen] to find where my current window is
and use that to capture the screen and place a new fullscreen window
over it. One potential problem I see is when the window spans across
two displays -- how do I reasonably choose which screen to display it
on? What screen does [NSWindow screen] return?
So to recap -- this code currently works correctly in the case when
the _mainWindow is on the primary display. The code does not work
correctly when it is on a secondary display. And I haven't tested the
case where the code spans displays -- I am assuming that it just flat
out doesn't work :)
here is the code from my enterFullscreen method -- mostly pulled from
sample code off developer.apple.com:
-(void)enterFullscreen
{
NSScreen *windowScreen = [_mainWindow screen];
NSDictionary *screenInfo = [windowScreen deviceDescription];
NSNumber *screenID = [screenInfo objectForKey:@NSScreenNumber];
// capture the screen
CGDirectDisplayID displayID = (CGDirectDisplayID)[screenID longValue];
CGDisplayErr err = CGDisplayCapture(displayID);
if(err == CGDisplayNoErr) {
if(!_fullscreenWindow) {
// Create the full-screen window.
NSRect winRect = [windowScreen frame];
_fullscreenWindow = [[NSWindow alloc]
initWithContentRect:winRect styleMask:NSBorderlessWindowMask
backing:NSBackingStoreBuffered defer:NO screen:windowScreen];
// Establish the window attributes.
[_fullscreenWindow setReleasedWhenClosed:NO];
[_fullscreenWindow setDisplaysWhenScreenProfileChanges:YES];
[_fullscreenWindow setDelegate:self];
}
// move our view over to the fullscreen window
[_mainWindow setContentView:nil];
[_fullscreenWindow setContentView:_mainView];
[_mainWindow setNeedsDisplay:YES];
// The window has to be above the level of the shield window.
int32_t shieldLevel = CGShieldingWindowLevel();
[_fullscreenWindow setLevel:shieldLevel];
// Show the window.
[_fullscreenWindow makeKeyAndOrderFront:self];
_fullscreenFlag = YES;
}
}
Sorry about the formatting -- it got a bit messed up when i pasted it
into gmail.
Thanks!
dennis
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Changing NSPrintPanel UI in 10.5
Hello, I am interested in adding additional button to the NSPrintPanel dialog at the very bottom line. Between ( PDF v ) and ( Cancel ). Is that possible under Leopard? Custom accessory view is not suitable for me. Even topics from Extending Printing Dialogs does not help, because they does not cover information about how to modify PrintPanel UI outside changeable panes. I could do this by getting NSPrintPanel window, accessing its content view and so on... but I wanted to be sure that this is the only way to do that. Is there any right way to achieve this? Regards, Rimas. ___ 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]
OT: Looking for Cocoa contractor for project
Our company needs a specific small Cocoa app developed that is a teleprompter/sound recorder for doing voiceovers. I posted on elance.com but not getting much reaction and a macslash posting mentioned listing here. We're looking for bids for the project now, and anyone interested can contact me for the specs. Thanks, Kris ___ 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: list open application windows
On May 13, 2008, at 1:13 AM, Ben Lowndes wrote: [...] the solution seems to lie in using the accessability API or an input manager. Is that correct? Please, please, please _don't_ write an input manager. They are a gross hack, using mechanisms that (as I understand it) Apple is planning on removing from the OS because they are destabilizing and unsafe. We've been plagued by incompatibilities between poorly- written but widely-deployed input managers and our product, and we're far from the only ones. Search the web a bit for Logitech Control Center, for an example. Cheers, Ken ___ 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: Changing NSPrintPanel UI in 10.5
On May 13, 2008, at 10:23 AM, Rimas wrote: I am interested in adding additional button to the NSPrintPanel dialog at the very bottom line. Between ( PDF v ) and ( Cancel ). Is that possible under Leopard? There no simple way to do this, and I would highly discourage trying to do so. Custom accessory view is not suitable for me. Even topics from Extending Printing Dialogs does not help, because they does not cover information about how to modify PrintPanel UI outside changeable panes. What are you trying to accomplish? I could do this by getting NSPrintPanel window, accessing its content view and so on... but I wanted to be sure that this is the only way to do that. Is there any right way to achieve this? There is no right way to do this. The content outside of any accessory views that you add to the print panel does not belong to you and should be considered an implementation detail. -- David Duncan Apple DTS Animation and Printing [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: Changing NSPrintPanel UI in 10.5
Thank you for reply. What are you trying to accomplish? Basicaly I am trying to merge Page setup and Print dialogs. That is easy by using NSPrintPanel's setOptions. But I want to keep Page setup functionality also. I mean, I want to be able to change paper size for example, without printing. This is quite difficult to do that when having only Cancel and Print buttons. Best Regards, Rimas. ___ 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: Changing NSPrintPanel UI in 10.5
On May 13, 2008, at 11:52 AM, Rimas wrote: What are you trying to accomplish? Basicaly I am trying to merge Page setup and Print dialogs. That is easy by using NSPrintPanel's setOptions. But I want to keep Page setup functionality also. I mean, I want to be able to change paper size for example, without printing. This is quite difficult to do that when having only Cancel and Print buttons. This is already handled inside the existing print dialog, although not in its collapsed state. Clicking the disclosure button adds controls to allow you to select the paper size and orientation. There are other controls you can add (or remove) as well, search the documentation for NSPrintPanelOptions (used with NSPrintPanel's -setOptions: method). -- David Duncan Apple DTS Animation and Printing [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: Changing NSPrintPanel UI in 10.5
You are right. And that works very well. Except one thing. After changing paper size in Print dialog I have two options - to press Cancel (and revert changes I have made) or to press Print and save new options + print document. I want only to change paper size and save that information for later print. I do not want to print at this moment. In other words, I want to have Print and Page Setup (without printing) functionality in one (Print) dialog. This is already handled inside the existing print dialog, although not in its collapsed state. Clicking the disclosure button adds controls to allow you to select the paper size and orientation. There are other controls you can add (or remove) as well, search the documentation for NSPrintPanelOptions (used with NSPrintPanel's -setOptions: method). Rimas. ___ 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: CoreData and conflictList error during save
At 10:44 AM -0700 5/12/08, [EMAIL PROTECTED] wrote: Hello, I'm using core-data in a program of mine. It uses two context where one of these is used in a second thread to perform saving operation. Sometimes at the end of all operations when I perform a save operation on my main context I receive a conflictList error. Is there any way to avoid it by merging changes? I've tried with [[self managedObjectContext] processPendingChanges]; [[self managedObjectContext] commitEditing]; -commitEditing is for controllers bound to this NSManagedObjectContext. It doesn't do anything from Core Data's perspective, it just passes the message along. You should check out the merge policies in the Core Data Reference Guide, and the Core Data Programming Guide. The default policy is error out so you actually have to think about what you want done. http://developer.apple.com/documentation/Cocoa/Reference/CoreDataFramework/Classes/NSManagedObjectContext_Class/Reference/Reference.html#//apple_ref/doc/constant_group/Merge_Policies -- -Ben ___ 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]
Xcode-like window menu?
I have a document based application with multiple windows per document, using window controllers. I was hoping that the window menu would magically group windows belonging to the same document together, similar to what Xcode does. But apparently that is not the case. Am I missing something, or is that something that needs to be implemented from scratch? Gerd ___ 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: Core data model, bindings advice.
I must admit the bindings for this are really playing with my head. I struggled quite immensely getting the selection from the treecontroller and in the end it started working without me fully understanding why. I have further complications to come as I have the decide whether the transaction amount is a debit or credit (based on the from/to account relationships) and then display the amount in the correct column and then also work out a way to add transactions back in like this. Steven, You might find it beneficial to learn about Cocoa Bindings and Core Data separately to minimize frustration. For example, you can take the 'Foundation tool' project template for creating command line apps, add CoreData.framework to the list of frameworks linked against, import the header, and go your merry way. Separately, the tree controller in Cocoa Bindings does seem to be a little thorny, especially on 10.4. It got a big overhaul in 10.5. You might try googling for community articles about using it and the outline view. -- -Ben ___ 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: Changing NSPrintPanel UI in 10.5
On May 13, 2008, at 12:05 PM, Rimas wrote: You are right. And that works very well. Except one thing. After changing paper size in Print dialog I have two options - to press Cancel (and revert changes I have made) or to press Print and save new options + print document. I want only to change paper size and save that information for later print. I do not want to print at this moment. In other words, I want to have Print and Page Setup (without printing) functionality in one (Print) dialog. If you want that functionality, then we recommend that you have a separate Page Setup menu item to invoke that dialog as this is the standard Mac OS X behavior and what users will expect. -- David Duncan Apple DTS Animation and Printing [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: Fullscreen on secondary displays
On May 13, 2008, at 12:11 PM, Dennis Munsie wrote:
I have an app right now that I've added a fullscreen mode to. RIght
now it works for fullscreen when I go to fullscreen on the main
display. If I attempt to do this on the secondary display, I get a
blank screen.
I think one problem is probably the way I am identifying which screen
to use -- I use [NSWindow screen] to find where my current window is
and use that to capture the screen and place a new fullscreen window
over it. One potential problem I see is when the window spans across
two displays -- how do I reasonably choose which screen to display it
on? What screen does [NSWindow screen] return?
So to recap -- this code currently works correctly in the case when
the _mainWindow is on the primary display. The code does not work
correctly when it is on a secondary display. And I haven't tested the
case where the code spans displays -- I am assuming that it just flat
out doesn't work :)
here is the code from my enterFullscreen method -- mostly pulled from
sample code off developer.apple.com:
-(void)enterFullscreen
{
NSScreen *windowScreen = [_mainWindow screen];
NSDictionary *screenInfo = [windowScreen deviceDescription];
NSNumber *screenID = [screenInfo objectForKey:@NSScreenNumber];
// capture the screen
CGDirectDisplayID displayID = (CGDirectDisplayID)[screenID
longValue];
CGDisplayErr err = CGDisplayCapture(displayID);
if(err == CGDisplayNoErr) {
if(!_fullscreenWindow) {
// Create the full-screen window.
NSRect winRect = [windowScreen frame];
_fullscreenWindow = [[NSWindow alloc]
initWithContentRect:winRect styleMask:NSBorderlessWindowMask
backing:NSBackingStoreBuffered defer:NO screen:windowScreen];
// Establish the window attributes.
[_fullscreenWindow setReleasedWhenClosed:NO];
[_fullscreenWindow
setDisplaysWhenScreenProfileChanges:YES];
[_fullscreenWindow setDelegate:self];
}
// move our view over to the fullscreen window
[_mainWindow setContentView:nil];
[_fullscreenWindow setContentView:_mainView];
[_mainWindow setNeedsDisplay:YES];
// The window has to be above the level of the shield window.
int32_t shieldLevel = CGShieldingWindowLevel();
[_fullscreenWindow setLevel:shieldLevel];
// Show the window.
[_fullscreenWindow makeKeyAndOrderFront:self];
_fullscreenFlag = YES;
}
}
Ack. Do not expect to use AppKit with a captured display. I really
wish all those archived code examples out there would just vanish;
just leads to more folks doing this.
Anyhow, if you really must capture the display using the CG APIs,
please note that there's different mechanisms for getting data onto
the screen. Search cocoa-dev and quartz-dev for the details on why
you cannot use AppKit with captured displays.
If you must use AppKit, you can always use a call to SetSystemUIMode
(to hide menu bar and dock). Then, enumerate all screens and put up
blanking windows on each one. Then, put up your content window
over a particular blanking one. See the child window APIs for how you
can ensure that the content window is never brought forward over the
blanking one.
This latter approach is what I've done for the past few years and has
worked great.
___
Ricky A. Sharp mailto:[EMAIL PROTECTED]
Instant Interactive(tm) http://www.instantinteractive.com
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Re: Fullscreen on secondary displays
In this case, what I am trying to accomplish is something along the lines of how Keynote and Powerpoint behave. I only want to take over one display, most likely connected up to a projector. But, I also occasionally want to have it in a window. I'm not expecting any controls to work -- this is strictly a view-only window. Also -- the code currently works just fine for the case of a single display machine or when the window is on the main display. I just need to make it work when the window is on another display. thanks! dennis On Tue, May 13, 2008 at 4:23 PM, Ricky Sharp [EMAIL PROTECTED] wrote: Ack. Do not expect to use AppKit with a captured display. I really wish all those archived code examples out there would just vanish; just leads to more folks doing this. Anyhow, if you really must capture the display using the CG APIs, please note that there's different mechanisms for getting data onto the screen. Search cocoa-dev and quartz-dev for the details on why you cannot use AppKit with captured displays. If you must use AppKit, you can always use a call to SetSystemUIMode (to hide menu bar and dock). Then, enumerate all screens and put up blanking windows on each one. Then, put up your content window over a particular blanking one. See the child window APIs for how you can ensure that the content window is never brought forward over the blanking one. This latter approach is what I've done for the past few years and has worked great. ___ Ricky A. Sharp mailto:[EMAIL PROTECTED] Instant Interactive(tm) http://www.instantinteractive.com -- dennis ___ 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: Fullscreen on secondary displays
None of this really refutes what Ricky posted. You are just lucky that it works in the one-display case. It really isn't designed to work, and on some configurations, it just won't. Is there anything preventing you from following Ricky's advice? Dennis Munsie wrote: In this case, what I am trying to accomplish is something along the lines of how Keynote and Powerpoint behave. I only want to take over one display, most likely connected up to a projector. But, I also occasionally want to have it in a window. I'm not expecting any controls to work -- this is strictly a view-only window. Also -- the code currently works just fine for the case of a single display machine or when the window is on the main display. I just need to make it work when the window is on another display. thanks! dennis On Tue, May 13, 2008 at 4:23 PM, Ricky Sharp [EMAIL PROTECTED] wrote: Ack. Do not expect to use AppKit with a captured display. I really wish all those archived code examples out there would just vanish; just leads to more folks doing this. Anyhow, if you really must capture the display using the CG APIs, please note that there's different mechanisms for getting data onto the screen. Search cocoa-dev and quartz-dev for the details on why you cannot use AppKit with captured displays. If you must use AppKit, you can always use a call to SetSystemUIMode (to hide menu bar and dock). Then, enumerate all screens and put up blanking windows on each one. Then, put up your content window over a particular blanking one. See the child window APIs for how you can ensure that the content window is never brought forward over the blanking one. This latter approach is what I've done for the past few years and has worked great. ___ Ricky A. Sharp mailto:[EMAIL PROTECTED] Instant Interactive(tm) http://www.instantinteractive.com ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to [EMAIL PROTECTED]
Re: Fullscreen on secondary displays
I was playing a bit with Cocoa and full screen and I wrote a quick blog entry about it: http://everburning.com/news/going-fullscreen-with-medium/ I'm not sure if it's the correct way, or the best way, but it does seem to work for me (although I believe it will limit the OS version you can run under). dan On Tue, May 13, 2008 at 1:40 PM, Dennis Munsie [EMAIL PROTECTED] wrote: In this case, what I am trying to accomplish is something along the lines of how Keynote and Powerpoint behave. I only want to take over one display, most likely connected up to a projector. But, I also occasionally want to have it in a window. I'm not expecting any controls to work -- this is strictly a view-only window. Also -- the code currently works just fine for the case of a single display machine or when the window is on the main display. I just need to make it work when the window is on another display. thanks! dennis On Tue, May 13, 2008 at 4:23 PM, Ricky Sharp [EMAIL PROTECTED] wrote: Ack. Do not expect to use AppKit with a captured display. I really wish all those archived code examples out there would just vanish; just leads to more folks doing this. Anyhow, if you really must capture the display using the CG APIs, please note that there's different mechanisms for getting data onto the screen. Search cocoa-dev and quartz-dev for the details on why you cannot use AppKit with captured displays. If you must use AppKit, you can always use a call to SetSystemUIMode (to hide menu bar and dock). Then, enumerate all screens and put up blanking windows on each one. Then, put up your content window over a particular blanking one. See the child window APIs for how you can ensure that the content window is never brought forward over the blanking one. This latter approach is what I've done for the past few years and has worked great. ___ Ricky A. Sharp mailto:[EMAIL PROTECTED] Instant Interactive(tm) http://www.instantinteractive.com -- dennis ___ 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/dj2%40withinepsilon.com This email sent to [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]
NSSearchField in menu item weirdness
I have a custom NSView that contains static text and a NSSearchField,
it's your run-of-the-mill attempt to provide live search in a menu, a
la the Apple help menu.
My issue is that while I can get the cursor into the search field, if
I type something other than standard text (arrow keys, home, end,
etc), the search field's action is fired and I receive the character
value of said key. As you can surmise, this doesn't really return the
right results. I would like the user to be able to use the down arrow
key to move out of the search field, so I implemented
controlView:textView:doCommandBySelector: for the search field's
delegate to catch moveDown:
This never gets called unless I actually click in the search field.
My custom NSView has this as it's implementation of
viewDidMoveToWindow to move the cursor into the field:
-(void) viewDidMoveToWindow
{
[[self window] makeFirstResponder:searchField];
}
It almost seems like this isn't really making the field the first
responder, at least not in the way that clicking on the field does.
Any thoughts on how to properly assign first responder status to a
text field in a view of a NSMenuItem?
And as a somewhat related question, can one programmatically change
the highlighted item in a menu? There doesn't appear to be a
selectMenuItemAtIndex: method...
As always, thanks
--
Jim
http://nukethemfromorbit.com
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Re: Fullscreen on secondary displays
Other than me wanting to avoid re-writing my view drawing code? :) I will probably look into doing this -- of the unanswered questions that I have is will I be able to toggle (relatively) easily between a full-screen context and a windowed context? Do I need to completely throw out my NS* drawing code? Or can I legitimately get away with throwing out my NSWindow and NSView usage while in fullscreen mode? Part of this stems from the fact that this is only a personal use app right now -- so I'm not necessarily tied to the right way of doing things at the moment. If I decide to distribute this in any way, I would be all for ripping things out and re-writing as necessary. But right now, I just need to have something working on my laptop only :) thanks! dennis On Tue, May 13, 2008 at 5:00 PM, John Stiles [EMAIL PROTECTED] wrote: None of this really refutes what Ricky posted. You are just lucky that it works in the one-display case. It really isn't designed to work, and on some configurations, it just won't. Is there anything preventing you from following Ricky's advice? Dennis Munsie wrote: In this case, what I am trying to accomplish is something along the lines of how Keynote and Powerpoint behave. I only want to take over one display, most likely connected up to a projector. But, I also occasionally want to have it in a window. I'm not expecting any controls to work -- this is strictly a view-only window. Also -- the code currently works just fine for the case of a single display machine or when the window is on the main display. I just need to make it work when the window is on another display. thanks! dennis On Tue, May 13, 2008 at 4:23 PM, Ricky Sharp [EMAIL PROTECTED] wrote: Ack. Do not expect to use AppKit with a captured display. I really wish all those archived code examples out there would just vanish; just leads to more folks doing this. Anyhow, if you really must capture the display using the CG APIs, please note that there's different mechanisms for getting data onto the screen. Search cocoa-dev and quartz-dev for the details on why you cannot use AppKit with captured displays. If you must use AppKit, you can always use a call to SetSystemUIMode (to hide menu bar and dock). Then, enumerate all screens and put up blanking windows on each one. Then, put up your content window over a particular blanking one. See the child window APIs for how you can ensure that the content window is never brought forward over the blanking one. This latter approach is what I've done for the past few years and has worked great. ___ Ricky A. Sharp mailto:[EMAIL PROTECTED] Instant Interactive(tm) http://www.instantinteractive.com -- dennis ___ 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: Fullscreen on secondary displays
Switch to fullscreen in a couple of line and without capturing display
('uiView' is your custom view with custom drawing code):
SetSystemUIMode(kUIModeAllSuppressed, kUIOptionAutoShowMenuBar);
NSScreen *screen = [[uiView window] screen];
NSWindow *window = [[NSWindow alloc] initWithContentRect:[screen
frame]
styleMask:NSBorderlessWindowMask
backing:NSBackingStoreBuffered
defer:NO
screen:screen];
[uiView retain];
[uiView removeFromSuperview];
[window setContentView:uiView];
[uiView release];
[window makeKeyAndOrderFront:sender];
[NSCursor setHiddenUntilMouseMoves:YES];
Revert to the window mode is left as an exercice for the reader ;-)
Le 13 mai 08 à 23:47, Dennis Munsie a écrit :
Other than me wanting to avoid re-writing my view drawing code? :)
I will probably look into doing this -- of the unanswered questions
that I have is will I be able to toggle (relatively) easily between a
full-screen context and a windowed context? Do I need to completely
throw out my NS* drawing code? Or can I legitimately get away with
throwing out my NSWindow and NSView usage while in fullscreen mode?
Part of this stems from the fact that this is only a personal use app
right now -- so I'm not necessarily tied to the right way of doing
things at the moment. If I decide to distribute this in any way, I
would be all for ripping things out and re-writing as necessary. But
right now, I just need to have something working on my laptop only :)
thanks!
dennis
On Tue, May 13, 2008 at 5:00 PM, John Stiles [EMAIL PROTECTED]
wrote:
None of this really refutes what Ricky posted.
You are just lucky that it works in the one-display case. It really
isn't
designed to work, and on some configurations, it just won't.
Is there anything preventing you from following Ricky's advice?
Dennis Munsie wrote:
In this case, what I am trying to accomplish is something along the
lines of how Keynote and Powerpoint behave. I only want to take over
one display, most likely connected up to a projector. But, I also
occasionally want to have it in a window. I'm not expecting any
controls to work -- this is strictly a view-only window.
Also -- the code currently works just fine for the case of a single
display machine or when the window is on the main display. I just
need to make it work when the window is on another display.
thanks!
dennis
On Tue, May 13, 2008 at 4:23 PM, Ricky Sharp [EMAIL PROTECTED] wrote:
Ack. Do not expect to use AppKit with a captured display. I really
wish
all those archived code examples out there would just vanish; just
leads to
more folks doing this.
Anyhow, if you really must capture the display using the CG APIs,
please
note that there's different mechanisms for getting data onto the
screen.
Search cocoa-dev and quartz-dev for the details on why you cannot
use AppKit
with captured displays.
If you must use AppKit, you can always use a call to
SetSystemUIMode (to
hide menu bar and dock). Then, enumerate all screens and put up
blanking
windows on each one. Then, put up your content window over a
particular
blanking one. See the child window APIs for how you can ensure that
the
content window is never brought forward over the blanking one.
This latter approach is what I've done for the past few years and has
worked great.
___
Ricky A. Sharp mailto:[EMAIL PROTECTED]
Instant Interactive(tm) http://www.instantinteractive.com
--
dennis
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Re: NSSearchField in menu item weirdness
On May 13, 2008, at 2:32 PM, Jim Turner wrote:
This never gets called unless I actually click in the search field.
My custom NSView has this as it's implementation of
viewDidMoveToWindow to move the cursor into the field:
-(void) viewDidMoveToWindow
{
[[self window] makeFirstResponder:searchField];
}
It almost seems like this isn't really making the field the first
responder, at least not in the way that clicking on the field does.
Any thoughts on how to properly assign first responder status to a
text field in a view of a NSMenuItem?
Hi Jim,
This is a known bug.
And as a somewhat related question, can one programmatically change
the highlighted item in a menu? There doesn't appear to be a
selectMenuItemAtIndex: method...
As always, thanks
No, this isn't possible yet.
Sorry I don't have better news,
-Peter
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Re: NSSearchField in menu item weirdness
On May 13, 2008, at 4:22 PM, Peter Ammon wrote:
On May 13, 2008, at 2:32 PM, Jim Turner wrote:
This never gets called unless I actually click in the search field.
My custom NSView has this as it's implementation of
viewDidMoveToWindow to move the cursor into the field:
-(void) viewDidMoveToWindow
{
[[self window] makeFirstResponder:searchField];
}
It almost seems like this isn't really making the field the first
responder, at least not in the way that clicking on the field does.
Any thoughts on how to properly assign first responder status to a
text field in a view of a NSMenuItem?
Hi Jim,
This is a known bug.
...I meant to follow this up with and I don't know of good any
workaround yet.
-Peter
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Re: Create NSStrings from a mapped NSData object - safe?
On 13 May '08, at 12:55 PM, Daniel Vollmer wrote: It sounds like you're creating a single NSString containing the entire contents of the file, then? Yes. Is that something I shouldn't do? I mean, I feel a tiny bit silly creating such huge strings but I didn't find a nice alternative (e.g. like the Ruby for each line iterators on file objects). Unfortunately streams are not Foundation's strong suit. You can use NSStream or NSFileHandle to read incrementally from a file, but the API's pretty low-level and you'll have to do things like decoding UTF-8 and parsing for line ends by yourself. But now that means that the strings are endangered from in-place file modification for the lifetime of my objects created during parsing, not just the initial parsing itself, correct? The big 20MB string might be, yes. If you created any new NSStrings as substrings of it, I am pretty sure those have their own copies of the character data, so they should be immune. Note that even if you used a stream to read the file incrementally, you wouldn't be immune to something else modifying the file while you were reading it. So the effect isn't all that different. Just be sure to release and stop using the big 20MB string right after you finish scanning it. —Jens smime.p7s Description: S/MIME cryptographic signature ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to [EMAIL PROTECTED]
Re: Anybody using Pantomime or mail-core framework?
On 13 May '08, at 4:35 PM, Matt Burnett wrote: Its not hard to enable HTTP authentication. It's also not hard to eavesdrop on the HTTP session using tcpdump, or to debug or disassemble the app to recover the password. In other words, putting a shared secret into an application distributed to end-users is not secure. Probably not a realistic fear in this particular case, but there are many, many instances of web scripts like this being abused to send spam, so I don't think I'm being overly paranoid :) —Jens smime.p7s Description: S/MIME cryptographic signature ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to [EMAIL PROTECTED]
Re: How to deal with property and Undo?
This is quite straightforward - it's covered by Aaron Hillegasse in
his excellent book. I use this technique and it works beautifully.
I've also wrapped up the common functionality into a class that
undoable observables can derive from, and once I had that, each
class that wants undo just needs to do 2 things:
1. publish a list of those properties that it wants to be undoable
(this is just a list of strings).
2. Return a user-readable string for the undo action name for each
undoable property. The undo manager sets this as the undo action name
- this is not required to make this actually work but you probably
don't want the Undo menu just to say Undo, but instead tell you what
it will undo.
So, when an object wants to start having its properties be undoable,
the controller uses the list of properties it publishes and starts
observing each one. Every change to any property ends up calling -
observeValueForKeyPath:ofObject:change:context: which converts the
change to an undo task using the undo manager's usual -
prepareWithInvocationTarget: method. The cunning thing is that the
target is the controller, and the method invoked is some private
method you declare. On invoking Undo, this private method then
reroutes the undo change back to the original object and property-
setting method. It completely unifies undo for all KVO-compliant
properties for any number of subsidiary objects - in my case I have
many different ones, all with many different properties. Undo just
works for all of them, once I provide the list of properties to the
controller.
Here's part of the code in the controller. The cunning private
method is ultra-simple:
- (void) changeKeyPath:(NSString*) keypath ofObject:(id) object
toValue:(id) value
{
if([value isEqual:[NSNull null]])
value = nil;
[object setValue:value forKeyPath:keypath];
}
- (void) observeValueForKeyPath:(NSString*) keypath ofObject:(id)
object change:(NSDictionary*) change context:(void*) context
{
#pragma unused(context)
NSKeyValueChange ch = [[change objectForKey:NSKeyValueChangeKindKey]
intValue];
BOOL wasChanged = NO;
if ( ch == NSKeyValueChangeSetting )
{
if(![[change objectForKey:NSKeyValueChangeOldKey] isEqual:[change
objectForKey:NSKeyValueChangeNewKey]])
{
[[[self undoManager] prepareWithInvocationTarget:self]
changeKeyPath:keypath
ofObject:object
toValue:[change objectForKey:NSKeyValueChangeOldKey]];
wasChanged = YES;
}
}
else if ( ch == NSKeyValueChangeInsertion || ch ==
NSKeyValueChangeRemoval )
{
// Cocoa has a bug (at least on 10.4) where array insertion/deletion
changes don't properly record the old array.
// GCObserveableObject gives us a workaround
NSArray* old = [object oldArrayValueForKeyPath:keypath];
[[[self undoManager] prepareWithInvocationTarget:self]
changeKeyPath:keypath
ofObject:object
toValue:old];
wasChanged = YES;
}
if ( wasChanged !([[self undoManager] isUndoing] || [[self
undoManager] isRedoing]))
{
if([object
respondsToSelector:@selector(actionNameForKeyPath:changeKind:)])
[[self undoManager] setActionName:[object
actionNameForKeyPath:keypath changeKind:ch]];
else
[[self undoManager] setActionName:[GCObservableObject
actionNameForKeyPath:keypath objClass:[object class]]];
}
}
On 14 May 2008, at 1:10 am, Mike Abdullah wrote:
In which case you need to set up KVO of the properties in a
controller object of some kind and use that to register the undos.
Of course, Core Data does this all automatically :)
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Re: @property question
Can someone expand on this a little more please and fill in some blanks
about why the first version isn't KVO compliant and what it is about the
second one which makes KVO work? That second piece of code
[ [ self mutableArrayValueForKey:@fieldArray ] addObjectInFoo ];
is not perhaps the first thing which would spring to mind when writing
new code.
Quincey Morris wrote:
On May 12, 2008, at 15:19, Craig Hopson wrote:
I think I've been the victim of some side effect that I cannot track
down. With no other changes, I tried again with each style,
[ self.fieldArray addObject:inFoo ];
[ fieldArray addObject:inFoo ];
replacing all occurrences for each test, and both work - what I
would have expected.
Incidentally, neither version is KVO-compliant. If you happen to have
something (e.g. a NSArrayController) bound to the array property, to
show Foos in the user interface, the effect of addObject (and
therefore addFoo) will be to leave what's displayed out of date. This
could possibly lead to unpredictable behavior or a crash.
The KVO-compliant way to add something to an array property would be
something like this:
- (void)addFoo:( Bar* )inFoo
{
[ [self mutableArrayValueForKey:@fieldArray] addObject:inFoo ];
}
P.S. I just noticed that the inFoo looks like it needs to be a Foo*,
not a Bar*. I assume this was just a typo when you stripped down your
example for posting?
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Re: Anybody using Pantomime or mail-core framework?
On 13 May '08, at 5:40 PM, Matt Burnett wrote: Now your talking about hackers instead of spammers. There's not really a difference nowadays, since most spam is sent from pwned servers/PCs. It is hard to sniff a HTTP session, you have to penetrate your victim's network enough to be able to do so. We're talking about a downloadable app. All I have to do is download a copy of it and either sniff its network traffic, or run it in gdb and set breakpoints on likely API calls that set up HTTP authentication. Then I know the URL and password. (None of this may be likely, but security requires thinking about the worst possible scenarios.) —Jens smime.p7s Description: S/MIME cryptographic signature ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to [EMAIL PROTECTED]
Re: Cocoa coding style (was Re: Did I reinvent the wheel?)
So I think that having to write your own Cocoa object graph management and persistence framework is a realistic and necessary evil Agreed. Also because of the wide variety of usage pattersn and design trade-offs. -- Scott Ribe [EMAIL PROTECTED] http://www.killerbytes.com/ (303) 722-0567 voice ___ 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: Xcode eats 100% CPU and more while typing
What about dtrace on Leopard? Isn't it supposed to let you view several aspects of program performance simultaneously, including a stack trace? Maybe if you could tie where it consumes the CPU cycles with the stack trace, it'll reveal a pattern? Just a thought. On May 9, 2008, at 2:18 PM, Lyndsey Ferguson wrote: On May 9, 2008, at 11:51 AM, Andy O'Meara wrote: In any case, I'll definitely be filing a radar next time it happens. Problem is, it's next to impossible get a repro the problem given the number of variables (environment, SCM, project, the file itself, and whatever UI actions/history that led up to that point), so we come back to the strange fact that only certain projects seem to be affected. When ever I want to submit bugs to Apple regarding Xcode's performance, I keep SpinControl running with a focus on Xcode. That generally generates enough files to submit. Lyndsey --- Mr. Lyndsey Ferguson [EMAIL PROTECTED] http://winterlandexpat.blogspot.com/ ___ Do not post admin requests to the list. They will be ignored. Xcode-users mailing list ([EMAIL PROTECTED]) Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/xcode-users/wsquires% 40satx.rr.com This email sent to [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]
Passing argument with different width due to prototype: warning
Im using Xcode 3.0 and building a Foundation Tool (debug, PPC). The base SDK path is $(DEVELOPER_SDK_DIR)/MacOSX10.5.sdk and Ive included Foundation.framework in the project under External Frameworks and Libraries. There is a line of my code that is giving me a warning I cant' douse: #import Foundation/Foundation.h . . . NSSocketPort *socketPort=[[NSSocketPort alloc] initWithTCPPort:1234]; . . . warning: passing argument 1 of 'initWithTCPPort:' with different width due to prototype I checked the NSPort header file for the NSSocketPort method prototype, /Developer/SDKs/MacOSX10.5.sdk/System/Library/Frameworks/ Foundation.framework/Versions/C/Headers/NSPort.h: - (id)initWithTCPPort:(unsigned short)port; What am I doing wrong? Below is the full text output of the compile. Russ CompileC build/NetHub.build/Debug/NetHub.build/Objects-normal/ppc/ NetHub.o /Users/russ/projects/NetHub/NetHub.m normal ppc objective-c com.apple.compilers.gcc.4_0 cd /Users/russ/projects/NetHub /Developer/usr/bin/gcc-4.0 -x objective-c -arch ppc -pipe -Wno- trigraphs -fpascal-strings -fasm-blocks -O0 -Wreturn-type -Wswitch - Wunused-variable -Wshadow -Wsign-compare -Wconversion -fmessage- length=0 -mtune=G5 -mfix-and-continue -mmacosx-version-min=10.5 - gdwarf-2 -I/Users/russ/projects/NetHub/build/NetHub.build/Debug/ NetHub.build/NetHub.hmap -F/Users/russ/projects/NetHub/build/Debug -I/ Users/russ/projects/NetHub/build/Debug/include -I/Users/russ/projects/ NetHub/build/NetHub.build/Debug/NetHub.build/DerivedSources -isysroot / Developer/SDKs/MacOSX10.5.sdk -include /Library/Caches/com.apple.Xcode. 502/SharedPrecompiledHeaders/NetHub_Prefix- cqkgtiwyvaysckdocenjyhyqyejn/NetHub_Prefix.pch -c /Users/russ/projects/ NetHub/NetHub.m -o /Users/russ/projects/NetHub/build/NetHub.build/ Debug/NetHub.build/Objects-normal/ppc/NetHub.o /Users/russ/projects/NetHub/NetHub.m: In function 'main': /Users/russ/projects/NetHub/NetHub.m:127: warning: passing argument 1 of 'initWithTCPPort:' with different width due to prototype ___ 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: Passing argument with different width due to prototype: warning
On May 13, 2008, at 7:10 PM, R.L. Grigg wrote: There is a line of my code that is giving me a warning I cant' douse: #import Foundation/Foundation.h . . . NSSocketPort *socketPort=[[NSSocketPort alloc] initWithTCPPort:1234]; . . . warning: passing argument 1 of 'initWithTCPPort:' with different width due to prototype Is this really 1234, or is it something larger? An unsigned short has to be between 0 and 65535. If it really is 1234, or at least something = 65535, then try casting the constant to unsigned short. Normally integer constants are treated by the compiler as ints. Nick Zitzmann http://www.chronosnet.com/ ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to [EMAIL PROTECTED]
Re: Passing argument with different width due to prototype: warning
On May 13, 2008, at 6:10 PM, R.L. Grigg wrote: NSSocketPort *socketPort=[[NSSocketPort alloc] initWithTCPPort:1234]; . . . warning: passing argument 1 of 'initWithTCPPort:' with different width due to prototype I checked the NSPort header file for the NSSocketPort method prototype, /Developer/SDKs/MacOSX10.5.sdk/System/Library/Frameworks/ Foundation.framework/Versions/C/Headers/NSPort.h: - (id)initWithTCPPort:(unsigned short)port; What am I doing wrong? Have you tried this? NSSocketPort *socketPort=[[NSSocketPort alloc] initWithTCPPort: (unsigned short)1234]; -==- Jack Repenning [EMAIL PROTECTED] Project Owner SCPlugin http://scplugin.tigris.org Subversion for the rest of OS X ___ 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: Xcode-like window menu?
Gerd, What XCode probably does, is simply switch documents, rather than switching windows. But yes, you probably need to programmatically interact with your NSDocument, NSDocumentController, NSWindowController objects. remember the hierarchy NSDocumentController NSDocument (multiple distinct document instances possible) NSWindowController (multiple instances possible within a document for multi-window documents). Responder-chain. ___ 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: Passing argument with different width due to prototype: warning
On May 13, 2008, at 6:10 PM, R.L. Grigg wrote: Im using Xcode 3.0 and building a Foundation Tool (debug, PPC). The base SDK path is $(DEVELOPER_SDK_DIR)/MacOSX10.5.sdk and Ive included Foundation.framework in the project under External Frameworks and Libraries. There is a line of my code that is giving me a warning I cant' douse: #import Foundation/Foundation.h . . . NSSocketPort *socketPort=[[NSSocketPort alloc] initWithTCPPort:1234]; . . . warning: passing argument 1 of 'initWithTCPPort:' with different width due to prototype I checked the NSPort header file for the NSSocketPort method prototype, /Developer/SDKs/MacOSX10.5.sdk/System/Library/Frameworks/ Foundation.framework/Versions/C/Headers/NSPort.h: - (id)initWithTCPPort:(unsigned short)port; What am I doing wrong? Nothing, really, unless you count using -Wconversion in the first place. -Wconversion isn't very useful these days -- it's mostly intended for use when you're working with pre-ANSI C without function prototypes. Quoting from gcc(1), -Wconversion warns if a prototype causes a type conversion that is different from what would happen to the same argument in the absence of a prototype. Since unprototyped integral arguments are passed as int, a parameter that's explicitly declared as any other integral type, such as unsigned short, will provoke this warning. Notice that it's how the *prototype* is declared, not how you're calling the function, that causes the warning, so there's nothing you can do to make it go away aside from turning off -Wconversion. --Chris Nebel ___ 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: Passing argument with different width due to prototype: warning
On May 13, 2008, at 6:41 PM, Christopher Nebel wrote: On May 13, 2008, at 6:10 PM, R.L. Grigg wrote: Im using Xcode 3.0 and building a Foundation Tool (debug, PPC). The base SDK path is $(DEVELOPER_SDK_DIR)/MacOSX10.5.sdk and Ive included Foundation.framework in the project under External Frameworks and Libraries. There is a line of my code that is giving me a warning I cant' douse: #import Foundation/Foundation.h . . . NSSocketPort *socketPort=[[NSSocketPort alloc] initWithTCPPort:1234]; . . . warning: passing argument 1 of 'initWithTCPPort:' with different width due to prototype I checked the NSPort header file for the NSSocketPort method prototype, /Developer/SDKs/MacOSX10.5.sdk/System/Library/Frameworks/ Foundation.framework/Versions/C/Headers/NSPort.h: - (id)initWithTCPPort:(unsigned short)port; What am I doing wrong? Nothing, really, unless you count using -Wconversion in the first place. -Wconversion isn't very useful these days -- it's mostly intended for use when you're working with pre-ANSI C without function prototypes. Quoting from gcc(1), -Wconversion warns if a prototype causes a type conversion that is different from what would happen to the same argument in the absence of a prototype. Since unprototyped integral arguments are passed as int, a parameter that's explicitly declared as any other integral type, such as unsigned short, will provoke this warning. Notice that it's how the *prototype* is declared, not how you're calling the function, that causes the warning, so there's nothing you can do to make it go away aside from turning off -Wconversion. Thanks, Chris, that was it! Prototype Conversion was enabled for the project. Russ ___ 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]
openURL is not applied to POST-argument of local html file in leopard.
hi~ all! because of security, we can't use GET method ( remain of browser history ) I make temp file like this, ( after 5 sec, it's deleted.) form name = 'BridgeForm' method = 'POST' action = 'http://sms.nate.com/nateonsms.jsp?' input type = hidden name = 'TICKET' value = '3324FF8B7EF929D78BAB7E25DD45CFD204CC4CB1EEE5067B7DF71884C4163A52A92C3C54EFCCDDB6B31EE013D7EEB5230FC8B99641C5475663F778F91C2C310F7292CAB5A603E63AAE46D5DFD4FF0FD68B2677F1C016B3CA8432F2B5F2E682DA6469C1B874B5308A597B0DB8AFCE3D4F0EA4AE6A98A0A8FB95AF5BC5211F9F0DE839BFD760F181AF9435E0FFCDCD1C056EE161471E9DDDBC5916E680703561AE25595743BAB8CA7A93FF7994BDDD9EC7B88E0A9380C068AF6B0E1CF91EF4E4CDE183D2F556C9CCEC' input type = hidden name = 'ID' value = '[EMAIL PROTECTED]' input type = hidden name = 'mobile' value = '' /form and call like this, [[NSWorkspace sharedWorkspace] openURL:[NSURL fileURLWithPath:bridgeFile]]; it's well done in tiger, but leopard is not. I found POST-args not applied in leopard. I don't know why POST-args's not applied. :( ( because of it's local html file??? security??? ) but tiger's local html file is well done. how can i solve it? also I want to open POST web site without temp file. it's possible, it's the best. I appreciate your read and sorry my poor english. ;-) Doo-Hyun Jang in South korea. -- [Blog] Old : http://lum7671.egloos.com New : http://lum7671.blogspot.com ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to [EMAIL PROTECTED]
Re: @property question
On Tue, May 13, 2008 at 8:41 PM, Roland King [EMAIL PROTECTED] wrote: Can someone expand on this a little more please and fill in some blanks about why the first version isn't KVO compliant and what it is about the second one which makes KVO work? KVO requires that you use the supplied -mutableValueForKey: method to get a proxy NSMutableArray object. Otherwise, it has no idea that you have modified the array underneath its feet. --Kyle Sluder ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to [EMAIL PROTECTED]
Re: list open application windows
On May 12, 2008, at 11:01 PM, Jens Alfke wrote: On 12 May '08, at 8:15 PM, Ben Lowndes wrote: I'm a cocoa newbie, so I may be missing something obvious here: I'd like to get a list of open windows for all currently running applications. Nothing personal, but people seem to ask this question here about once a week ... and I just have to ask why? What kind of application are you working on? I can't think of a compelling usage for this, other than writing some kind of window-management utility (or malware...) I have a couple of screen measurement tools for which I could have used those APIs had I ever been able to make any sense of them.For instance, in the GuideLines app, I would like to be able to query the top-most window under the cursor for its content view and sub-views so as to align the guides to a document's borders. And, yes, perusing a bunch of 'private' APIs a couple of years ago, I wondered about the potential for malicious or mischievous apps.The CGWindowListCopyWindowInfo mentioned later sounds like what I could use, and it's read-only . . . Cheers, Henry ===+ Henry McGilton, Boulevardier |Trilithon Software Objective-C/Java Composer | Seroia Research ---+ mailto:[EMAIL PROTECTED] | http://www.trilithon.com | ===+ ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to [EMAIL PROTECTED]
Re: @property question
On May 13, 2008, at 5:41 PM, Roland King wrote: Can someone expand on this a little more please and fill in some blanks about why the first version isn't KVO compliant and what it is about the second one which makes KVO work? That second piece of code [ [ self mutableArrayValueForKey:@fieldArray ] addObjectInFoo ]; is not perhaps the first thing which would spring to mind when writing new code. When you wrote [fieldArray addObject:foo], what you were changing was not a property in the key-value observing sense, but the array used to implement that property. What you get back from -mutableArrayValueForKey: is a representation of the property itself, rather than to the array that is used to implement the property; it will thus broadcast KVO change notifications when it's mutated. -- Chris ___ 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: Fullscreen on secondary displays
This code worked for me -- with one change: the NSRect from [screen
frame] has the offset set to it's relative location to the main
display. This is what was throwing me off the entire time :) By
setting the offset to 0,0 I was able to get a visible full screen
window.
BTW -- not that it matters for the app that I'm working on, but since
SetSystemUIMode is in Carbon, are there plans to move it to Cocoa? Is
this function available for 64-bit apps?
Thanks to everyone that helped!
regards,
dennis
On Tue, May 13, 2008 at 6:30 PM, Jean-Daniel Dupas
[EMAIL PROTECTED] wrote:
Switch to fullscreen in a couple of line and without capturing display
('uiView' is your custom view with custom drawing code):
SetSystemUIMode(kUIModeAllSuppressed, kUIOptionAutoShowMenuBar);
NSScreen *screen = [[uiView window] screen];
NSWindow *window = [[NSWindow alloc] initWithContentRect:[screen frame]
styleMask:NSBorderlessWindowMask
backing:NSBackingStoreBuffered
defer:NO
screen:screen];
[uiView retain];
[uiView removeFromSuperview];
[window setContentView:uiView];
[uiView release];
[window makeKeyAndOrderFront:sender];
[NSCursor setHiddenUntilMouseMoves:YES];
Revert to the window mode is left as an exercice for the reader ;-)
Le 13 mai 08 à 23:47, Dennis Munsie a écrit :
Other than me wanting to avoid re-writing my view drawing code? :)
I will probably look into doing this -- of the unanswered questions
that I have is will I be able to toggle (relatively) easily between a
full-screen context and a windowed context? Do I need to completely
throw out my NS* drawing code? Or can I legitimately get away with
throwing out my NSWindow and NSView usage while in fullscreen mode?
Part of this stems from the fact that this is only a personal use app
right now -- so I'm not necessarily tied to the right way of doing
things at the moment. If I decide to distribute this in any way, I
would be all for ripping things out and re-writing as necessary. But
right now, I just need to have something working on my laptop only :)
thanks!
dennis
On Tue, May 13, 2008 at 5:00 PM, John Stiles [EMAIL PROTECTED] wrote:
None of this really refutes what Ricky posted.
You are just lucky that it works in the one-display case. It really isn't
designed to work, and on some configurations, it just won't.
Is there anything preventing you from following Ricky's advice?
Dennis Munsie wrote:
In this case, what I am trying to accomplish is something along the
lines of how Keynote and Powerpoint behave. I only want to take over
one display, most likely connected up to a projector. But, I also
occasionally want to have it in a window. I'm not expecting any
controls to work -- this is strictly a view-only window.
Also -- the code currently works just fine for the case of a single
display machine or when the window is on the main display. I just
need to make it work when the window is on another display.
thanks!
dennis
On Tue, May 13, 2008 at 4:23 PM, Ricky Sharp [EMAIL PROTECTED] wrote:
Ack. Do not expect to use AppKit with a captured display. I really wish
all those archived code examples out there would just vanish; just leads to
more folks doing this.
Anyhow, if you really must capture the display using the CG APIs, please
note that there's different mechanisms for getting data onto the screen.
Search cocoa-dev and quartz-dev for the details on why you cannot use AppKit
with captured displays.
If you must use AppKit, you can always use a call to SetSystemUIMode (to
hide menu bar and dock). Then, enumerate all screens and put up blanking
windows on each one. Then, put up your content window over a particular
blanking one. See the child window APIs for how you can ensure that the
content window is never brought forward over the blanking one.
This latter approach is what I've done for the past few years and has
worked great.
___
Ricky A. Sharp mailto:[EMAIL PROTECTED]
Instant Interactive(tm) http://www.instantinteractive.com
--
dennis
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--
dennis
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Re: Create NSStrings from a mapped NSData object - safe?
I actually tested this a month back and not all operations/programs respect link counts nor does the system appear to enforce them. For instance an rm -f will destroy the file regardless of link count, as well as some obscure APIs. After the file was removed the mapping program crashed when trying to read more of the file; it failed to load new map data. On May 13, 2008, at 9:08 AM, Jens Alfke wrote: You're correct about modifications, but not about deletions. An open file descriptor counts as a link to a file, so the unlink(2) system call will not actually delete the file from disk because there's still a link to it. Once you close the mapped file, the last link goes away and then the file is actually deleted. ___ 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: Create NSStrings from a mapped NSData object - safe?
Also I should add, I've yet to find a way to protect a file from editing or deletion on OS X that can't just be ignored by something else. Things like flock appear to be optionally supported and not globally enforced. As long as a way exists to get around any kind of file lock there's no way to guarantee a specific file will be unchanged during usage. This is partially done to prevent file lock abuse I'm guessing. As Mr. Davidson pointed out, the best you can do is only map files you can be reasonably sure no one will want to modify unless purposely trying to corrupt your program. On May 13, 2008, at 9:57 PM, Michael Vannorsdel wrote: I actually tested this a month back and not all operations/programs respect link counts nor does the system appear to enforce them. For instance an rm -f will destroy the file regardless of link count, as well as some obscure APIs. After the file was removed the mapping program crashed when trying to read more of the file; it failed to load new map data. On May 13, 2008, at 9:08 AM, Jens Alfke wrote: You're correct about modifications, but not about deletions. An open file descriptor counts as a link to a file, so the unlink(2) system call will not actually delete the file from disk because there's still a link to it. Once you close the mapped file, the last link goes away and then the file is actually deleted. ___ 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]
Weird crash in sendEvent - right click vs control click
Hi, I'm having a rather weird crash in a Cocoa application. If I control- click on a window, my application crashes instantly. If I right click, it doesn't (and indeed my rightMouse method is eventually called as I want it to be). I've tried enabling zombies, but that doesn't catch anything. The stack trace is rather short: objc_msgSend -[NSWindow sendEvent:] -[MyWindow sendEvent:] -[NSApplication sendEvent:] -[MyApplication sendEvent:] -[NSApplication run] NSApplicationMain main That leads to the questions: (1) What's the difference between a control click and a right click that would lead the former to cause a crash and the latter not to? (2) What's likely to be the cause of a crash in NSWindow sendEvent: ? Thanks, Brett ___ 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: Save as and Open conditional code samples? tutorials?
John: Check this out: http://developer.apple.com/documentation/Cocoa/Conceptual/Documents/Articles/MultiDocument.html#/ /apple_ref/doc/uid/TP40003382 Hope that helps. The developer documentation is your friend :) Omar Qazi Hello, Galaxy! 1.310.294.1593 On May 13, 2008, at 8:56 PM, John Joyce wrote: Does anybody have any code samples or tutorials on opening/saving documents with conditional handling for different file types? Conceptually, handling the content is not a problem. The thing I'm not sure about is how to hook up a document-based app to handle additional file types but with the preferred native document type. My app's documents are little more than an array of strings, where each string is a sub document. The thing I want to do is export all as a single text file or as individual text files, and likewise import a text file with simple string symbols as separators (basically like a CSV file). Handling the text and doing things with it is easy. I just don't know what sort of design patterns exist for handling additional file types. smime.p7s Description: S/MIME cryptographic signature ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to [EMAIL PROTECTED]
Re: Weird crash in sendEvent - right click vs control click
Hi, Brett, Is it possible that you have any haxies, or any Input Managers, of any sort installed? Logitech Control Center, for instance, or perhaps APE? That's the only thing that I could think of that might be yielding such a crash. Cheers, Andrew On May 13, 2008, at 9:21 PM, Brett Powley wrote: Hi, I'm having a rather weird crash in a Cocoa application. If I control-click on a window, my application crashes instantly. If I right click, it doesn't (and indeed my rightMouse method is eventually called as I want it to be). I've tried enabling zombies, but that doesn't catch anything. The stack trace is rather short: objc_msgSend -[NSWindow sendEvent:] -[MyWindow sendEvent:] -[NSApplication sendEvent:] -[MyApplication sendEvent:] -[NSApplication run] NSApplicationMain main That leads to the questions: (1) What's the difference between a control click and a right click that would lead the former to cause a crash and the latter not to? (2) What's likely to be the cause of a crash in NSWindow sendEvent: ? Thanks, Brett ___ 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/andrew.merenbach%40ucla.edu This email sent to [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]
how to create PLIST file
Hi All, I am newb in quartz. when we right-click on .qtz file open with PLIST editor we get PLIST file, which lists its all nodes and properties. And I wanted to convert PLIST file to .qtz file programmatically. (I don't wanna use quartz composer to do this.) My final aim to create that PLIST file dynamically from UI. How this can be done ? Can any one help me in achieving it ? saahil. ___ 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: Create NSStrings from a mapped NSData object - safe?
I suggest reading in the entire file into your NSData with
initWithContentsOfFile: if there's a significant chance of file
modification. I know this sounds like a huge memory usage but this
way you can know your data is static and the system is designed to
handle high memory usage programs. If there's some pages of your data
you haven't touched in a while the system will swap those out and use
the physical pages for something that needs them.
When making substrings from the data you can save making redundant
copies using initWithBytesNoCopy:length:encoding:freeWhenDone: for
string objects that only reference the characters from the data. They
depend on the NSData object so it needs to be valid for these strings
to work. If you want permanent copies of some substrings you can use
initWithString: to make them; I'm not sure if using copy will just
make another object only referencing the data like the original. If
you make the substrings with any of NSString's substring* methods, the
returned strings will be independent and won't become invalid if the
NSData or base string are released.
On May 13, 2008, at 1:55 PM, Daniel Vollmer wrote:
On May 13, 2008, at 17:00, Jens Alfke wrote:
On 12 May '08, at 11:38 PM, Daniel Vollmer wrote:
It sounds like you're creating a single NSString containing the
entire contents of the file, then?
Yes. Is that something I shouldn't do? I mean, I feel a tiny bit
silly creating such huge strings but I didn't find a nice
alternative (e.g. like the Ruby for each line iterators on file
objects).
Yes. Even if the NSString is still using the NSData's contents for
its buffer, it retained them, so releasing the NSData won't make it
go away until the string is done with it.
But now that means that the strings are endangered from in-place
file modification for the lifetime of my objects created during
parsing, not just the initial parsing itself, correct?
Also, it feels a bit silly to have a retain on the 20MB NSData
object while I still hold references to about 5KB of string bytes
from various places in the file. Usually all this behind-the-
scenes storage retaining doesn't matter much, but I'd quite like to
make sure I drop most of the 20MB once I'm done parsing. This
question of course also applies if I'm not mapping the file and
creating a String from it directly
FWIW, my current iteration looks like this (String being the big
20MB one);
NSUInteger length = [String length];
NSUInteger paraStart = 0, paraEnd = 0, contentsEnd = 0;
while (paraEnd length)
{
[String getParagraphStart:paraStart end:paraEnd
contentsEnd:contentsEnd forRange:NSMakeRange(paraEnd, 0)];
line = [String substringWithRange:NSMakeRange(paraStart,
contentsEnd - paraStart)];
// do lots of menial parsing of line
}
If I leave the mmaped reading in, it sounds like a sensible idea to
check whether the file is on the same drive as the app. So thanks
for that suggestion.
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Re: Xcode eats 100% CPU and more while typing
In any case, I'll definitely be filing a radar next time it happens. Problem is, it's next to impossible get a repro the problem given the number of variables (environment, SCM, project, the file itself, and whatever UI actions/history that led up to that point), so we come back to the strange fact that only certain projects seem to be affected. In hard to reproduce cases like this, often the easiest way to get a handle on them is to have Shark sit in the background running a 'Time Profile (WTF)' against Xcode while you work, and that'll enable you to grab a session including not just the time in which Xcode is misbehaving, but also the period leading up to that - often critical in figuring out how and even what state the app has gotten itself into. The overhead of doing this is negligible, and certainly won't impact your normal Xcode work. For more information you can read up on Time Profiling in the Shark user manual, and specifically Windowed Time Facility (WTF). A bug report with such a session attached is much more likely to receive attention than simply stating there's a problem. As noted, it's also likely to be more useful than a simple profile or traditional 'sample', and is easier to obtain. Wade ___ 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: Weird crash in sendEvent - right click vs control click
Hi Andrew, I did think about that. I've poked around in Contextual Menu Items and Input Methods folders and can't find anything there. I don't have LCC installed, and I avoid installing anything that uses APE. I have just had a quick check and can't see any evidence that APE has been installed without my knowledge. The odd thing is that the client I'm writing this for is seeing the same crash (of course it's possible that both of us have the same hack installed somewhere). I should add that the stack trace is actually even shorter than the one I pasted before -- I had overridden the sendEvent: method to see if I could catch the crash: objc_msgSend -[NSWindow sendEvent:] -[NSApplication sendEvent:] -[NSApplication run] NSApplicationMain main i.e. my code hasn't even been called yet (unless of course objc_msgSend is trying to dispatch something to one of my objects, in which case I'd like to know what it is) Cheers, Brett On 14/05/2008, at 2:33 PM, Andrew Merenbach wrote: Hi, Brett, Is it possible that you have any haxies, or any Input Managers, of any sort installed? Logitech Control Center, for instance, or perhaps APE? That's the only thing that I could think of that might be yielding such a crash. Cheers, Andrew On May 13, 2008, at 9:21 PM, Brett Powley wrote: Hi, I'm having a rather weird crash in a Cocoa application. If I control-click on a window, my application crashes instantly. If I right click, it doesn't (and indeed my rightMouse method is eventually called as I want it to be). I've tried enabling zombies, but that doesn't catch anything. The stack trace is rather short: objc_msgSend -[NSWindow sendEvent:] -[MyWindow sendEvent:] -[NSApplication sendEvent:] -[MyApplication sendEvent:] -[NSApplication run] NSApplicationMain main That leads to the questions: (1) What's the difference between a control click and a right click that would lead the former to cause a crash and the latter not to? (2) What's likely to be the cause of a crash in NSWindow sendEvent: ? Thanks, Brett ___ 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/andrew.merenbach%40ucla.edu This email sent to [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: Xcode eats 100% CPU and more while typing
For more information you can read up on Time Profiling in the Shark user manual, and specifically Windowed Time Facility (WTF). Somewhere along the way someone ate my links. Thanks a lot, anonymous gremlin. :) Time Profiling: http://developer.apple.com/documentation/DeveloperTools/Conceptual/SharkUserGuide/TimeProfiling/chapter_3_section_1.html#/ /apple_ref/doc/uid/TP40005233-CH3-SW1 Windowed Time Facility (WTF): http://developer.apple.com/documentation/DeveloperTools/Conceptual/SharkUserGuide/SelectingExecutiontoSampleorTrace/chapter_6_section_5.html#/ /apple_ref/doc/uid/TP40005233-CH13-SW1 Wade ___ 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: how to create PLIST file
I don't know specifically about the .qtz file, but you can create a plist programmatically from an NSDictionary rather trivially using the writeToFile:atomically: method. Cheers, Brett ___ 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: openURL is not applied to POST-argument of local html file in leopard.
If you want to POST a form, don't create a temporary file to make Safari do it! Just use NSURLConnection to send the request yourself. —Jens smime.p7s Description: S/MIME cryptographic signature ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to [EMAIL PROTECTED]
Re: Create NSStrings from a mapped NSData object - safe?
On 13 May '08, at 9:39 PM, Michael Vannorsdel wrote: If there's some pages of your data you haven't touched in a while the system will swap those out and use the physical pages for something that needs them. Yes, but it's less efficient than a mapped file, which doesn't have to be swapped out at all. The OS may have virtual memory, but swapping when the system is under memory pressure is the chief performance problem in OS X; when I worked at Apple, the performance people drilled it into us that the most important optimization is saving memory. (For example, that's why Release builds use -Os by default instead of -O2.) When making substrings from the data you can save making redundant copies using initWithBytesNoCopy:length:encoding:freeWhenDone: for string objects that only reference the characters from the data. They depend on the NSData object so it needs to be valid for these strings to work. This is tricky and dangerous. It's very difficult to predict object lifespans in a ref-counted or GC'd environment, and if any of those little strings are still being retained by something when you free the big string, they all turn into land mines that will crash the app the next time they're referenced. It's possible to make this work, but I would only try it as a last- ditch optimization if the sheer volume of copied strings was choking performance. (Or -initWithBytesNoCopy: might just copy the bytes anyway. It's only a hint, not a guarantee. I believe it can only use the raw bytes without copying if they're in UTF-16 or ascii or MacRoman encoding.) —Jens smime.p7s Description: S/MIME cryptographic signature ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to [EMAIL PROTECTED]
Re: Create NSStrings from a mapped NSData object - safe?
On 13 May '08, at 8:57 PM, Michael Vannorsdel wrote: I actually tested this a month back and not all operations/programs respect link counts nor does the system appear to enforce them. For instance an rm -f will destroy the file regardless of link count, as well as some obscure APIs. After the file was removed the mapping program crashed when trying to read more of the file; it failed to load new map data. I'm surprised to hear that. If it's true, that would be some kind of OS bug. You should file a bug report, or at least bring it up on filesystem-dev, if you haven't already. —Jens smime.p7s Description: S/MIME cryptographic signature ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to [EMAIL PROTECTED]
