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@leearmstrong
Created March 28, 2012 14:52
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Draws a circle with a number in the middle
//// Abstracted Graphic Attributes
NSString* textContent = [NSString stringWithFormat:@"%i",[myAnnotation.annotations count]];
//// General Declarations
CGColorSpaceRef colorSpace = CGColorSpaceCreateDeviceRGB();
CGContextRef context = UIGraphicsGetCurrentContext();
//// Gradient Declarations
NSArray* gradient3Colors = [NSArray arrayWithObjects:
(id)[UIColor lightGrayColor].CGColor,
(id)[UIColor darkGrayColor].CGColor, nil];
CGFloat gradient3Locations[] = {0, 1};
CGGradientRef gradient3 = CGGradientCreateWithColors(colorSpace, (CFArrayRef)gradient3Colors, gradient3Locations);
//// Oval Drawing
UIBezierPath* ovalPath = [UIBezierPath bezierPathWithOvalInRect: CGRectMake(0.5, 0.5, 34, 34)];
CGContextSaveGState(context);
[ovalPath addClip];
CGContextDrawRadialGradient(context, gradient3,
CGPointMake(17.5, 17.5), 10,
CGPointMake(17.5, 17.5), 30,
kCGGradientDrawsBeforeStartLocation | kCGGradientDrawsAfterEndLocation);
CGContextRestoreGState(context);
[[UIColor blackColor] setStroke];
ovalPath.lineWidth = 0.5;
[ovalPath stroke];
//// Text Drawing
CGRect textFrame = CGRectMake(0, 7.0, 35, 20);
[[UIColor whiteColor] setFill];
[textContent drawInRect: textFrame withFont: [UIFont fontWithName: @"HelveticaNeue" size: [UIFont systemFontSize]] lineBreakMode: UILineBreakModeWordWrap alignment: UITextAlignmentCenter];
//// Cleanup
CGGradientRelease(gradient3);
CGColorSpaceRelease(colorSpace);
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