krasnyk - Developer IT

ipad - printing

- by krasnyk

I know that you can buy Pages, Numbers and Keynote for iPad. Another question is if it is possible to print documents made with those applications with iPad? If so how? Only by WI-FI?

How can i get a list of currently running threads in objective-C(iphone)

Is there a way to get the list of currently running threads in objective-C? I'm mostly interested in getting the NSThreads objects, cause i want to replace the assertion handler for each running thread? If such thing is not possible, maybe i could set my own selector to be invoked after any thread is spawn(so that i could do the assertion handler replacement over there)?

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iPad - supports Garbage Collector?

- by krasnyk

I know you can't use GC in iPhone applications cause iPhone does not have enough resources to enable that - it would kill the performence. What about iPad. I know they run iPhone OS too, does that mean that CG can't be enabled on the iPad as well?

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Xcode's colored console output

- by krasnyk

Is possible to format/color the output in the Xcode console? I know that you can do that while debugging CoreData on Mac by setting: com.apple.CoreData.SQLDebug 3 and com.apple.CoreData.SyntaxColoredLogging YES What with our own logs, can we color/format them too somehow?

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NSImage different size in code different shown by Finder/Preview

- by krasnyk

I have a couple of images that i use in my application(one of them is attached). The strange thing is that the real image size(shown by finder and preview) is 1200x701 px. When I access image from the code and as for its size, I get 360x210px. What is going on? Code I'm using to get the size of the image: NSImage *newImg = [[NSImage alloc] initWithContentsOfURL: [NSURL URLFromPasteboard:[sender draggingPasteboard]]]; float h = [newImg size].height; //height is 210px - should be 701px float w = [newImg size].width; //width is 320px - should be 1200px The content of the newImg is the same image that has been pointed and loaded - I display it in the NSImageView anyway so I see. Just the size taken with -size is wrong. This is the image:

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Is there any method in Cocoa that helps iterating through all NSColor values(R,G,B only, alpha not t

- by krasnyk

You may ask why do I need it? I have to detect all white objects at the B/W image. I'm coloring each object and taking its rect. In order fill each object with different color I would be very happy to use a function that can for a given color gimme a next one or so. In Qt there is a nice one that is called nextColor or so, returns the integer representing the next color(which can be easily translated to RGB). Does Cocoa have sth like that?

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Simulate memory warnings from the code, possible?

- by krasnyk

I know i can simulate a memory warning on the simulator by selecting 'Simulate Memory Warning' from the drop down menu of the iPhone Simulator. I can even make a hot key for that. But this is not what I'd like to achieve. I'd like to do that from the code by simply, lets say doing it every 5 seconds. Is that possible?

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UITextField showing trash instead of characters

- by krasnyk

There's quite a strange thing happening to text fields in application I'm developing (see image below). [1]: http://img7.imageshack.us/img7/1449/zrzutekranu20100506godz.png At some point in the application I'm using - (void) viewWillAppear:(BOOL)animated { [super viewWillAppear:animated]; [[(TextFieldView*)[self view] usernameTextField] becomeFirstResponder]; } Which results in the above image. If it's called in viewDidAppear - everything is fine. The funny thing about this error is that it breaks ALL text fields throught the application. Has anyone ever encountered such an error? Might it be related to openGL use?

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Clipping different parts of an image with path

- by huggie

I've recently asked a question about clipping an image via path at view's drawRect method. http://stackoverflow.com/questions/2570653/iphone-clip-image-with-path Krasnyk's code is copied below. - (void)drawRect:(CGRect)rect { CGContextRef context = UIGraphicsGetCurrentContext(); CGMutablePathRef path = CGPathCreateMutable(); //or for e.g. CGPathAddRect(path, NULL, CGRectInset([self bounds], 10, 20)); CGPathAddEllipseInRect(path, NULL, [self bounds]); CGContextAddPath(context, path); CGContextClip(context); CGPathRelease(path); [[UIImage imageNamed:@"GC.png"] drawInRect:[self bounds]]; } It works very well. However, when my image is larger than the view itself, how do I show different parts of the image? I tried tweaking around with translation on the locations (show as bounds above) of ellipse and/or UIImage drawInRect but some complex effects (Unwanted clipping, weird elipse size) I can't explain happens.

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