Ayal Spitz aspitz

aspitz / Remove SVN

Created June 20, 2013 13:34

This bash command removes SVN from a folder and all it's children

find . -name ".svn" -exec rm -Rf {} \;

aspitz / NSUserDefaults+Utilities

Created June 18, 2013 19:46

Category code to store and retrieve CGPoint and CGRect

	#import "NSUserDefaults+Utilities.h"

	@implementation NSUserDefaults (Utilities)

	- (CGPoint)CGPointForKey:(NSString *)key
	{
	CGPoint pt = CGPointZero;

	NSArray *ptArray = [self objectForKey:key];
	if (ptArray != nil)

aspitz / NSWindow+Utilities

Created June 18, 2013 19:44

Category code to position a window based on the upper right hand corner of the screen

	#import "NSWindow+Utilities.h"

	@implementation NSWindow (Utilities)

	- (void)setTopLeftRelativeToMainScreen:(CGPoint)topLeftPt{
	CGRect mainScreenVisibleFrame = NSScreen.mainScreen.visibleFrame;
	CGPoint pt = CGPointZero;
	pt.x = topLeftPt.x;
	pt.y = mainScreenVisibleFrame.origin.y + mainScreenVisibleFrame.size.height - topLeftPt.y;
	[self setFrameTopLeftPoint:pt];

aspitz / UIImage+Alpha

Created May 20, 2013 20:02

UIImage category that adds a method to create a white image based on the source images alpha channel

	@implementation UIImage (Alpha)

	- (UIImage *)alphaImage{
	CGRect imageRect = CGRectMake(0, 0, self.size.width, self.size.height);
	CGColorSpaceRef rgbColorSpace = CGColorSpaceCreateDeviceRGB(); // create an RGB Color Space

	// create the context to do our drawing in
	CGContextRef context = CGBitmapContextCreate(NULL, imageRect.size.width, imageRect.size.height, 8, imageRect.size.width * 4, rgbColorSpace, kCGImageAlphaPremultipliedLast);
	// use the images alpha channel as a mask
	CGContextClipToMask(context, imageRect, self.CGImage);