paint code variable size sample

gistfile1.m

- (void)drawRect:(CGRect)rect
{
    //// General Declarations
    CGColorSpaceRef colorSpace = CGColorSpaceCreateDeviceRGB();
    CGContextRef context = UIGraphicsGetCurrentContext();
    
    //// Color Declarations
    UIColor* color = [UIColor colorWithRed: 0.3 green: 0.3 blue: 0.3 alpha: 1];
    UIColor* color2 = [UIColor colorWithRed: 0.1 green: 0.1 blue: 0.1 alpha: 1];
    UIColor* color3 = [UIColor colorWithRed: 0 green: 0 blue: 0 alpha: 0.69];
    
    //// Gradient Declarations
    NSArray* gradientColors = [NSArray arrayWithObjects: 
                               (id)color.CGColor, 
                               (id)color2.CGColor, nil];
    CGFloat gradientLocations[] = {0, 1};
    CGGradientRef gradient = CGGradientCreateWithColors(colorSpace, (__bridge CFArrayRef)gradientColors, gradientLocations);
    
    //// Shadow Declarations
    CGColorRef shadow2 = color3.CGColor;
    CGSize shadow2Offset = CGSizeMake(0, -0);
    CGFloat shadow2BlurRadius = 20;
    
    //// Abstracted Graphic Attributes
    CGRect rectangleFrame = rect;
    
    
    //// Rectangle Drawing
    UIBezierPath* rectanglePath = [UIBezierPath bezierPathWithRect: rectangleFrame];
    CGContextSaveGState(context);
    [rectanglePath addClip];
    CGContextDrawRadialGradient(context, gradient,
                                CGPointMake(rect.size.width/2.0, rect.size.height/2.0), 10,
                                CGPointMake(rect.size.width/2.0, rect.size.height/2.0), 680.98,
                                kCGGradientDrawsBeforeStartLocation | kCGGradientDrawsAfterEndLocation);
    CGContextRestoreGState(context);
    
    ////// Rectangle Inner Shadow
    CGRect rectangleBorderRect = CGRectInset([rectanglePath bounds], -shadow2BlurRadius, -shadow2BlurRadius);
    rectangleBorderRect = CGRectOffset(rectangleBorderRect, -shadow2Offset.width, -shadow2Offset.height);
    rectangleBorderRect = CGRectInset(CGRectUnion(rectangleBorderRect, [rectanglePath bounds]), -1, -1);
    
    UIBezierPath* rectangleNegativePath = [UIBezierPath bezierPathWithRect: rectangleBorderRect];
    [rectangleNegativePath appendPath: rectanglePath];
    rectangleNegativePath.usesEvenOddFillRule = YES;
    
    CGContextSaveGState(context);
    {
        CGFloat xOffset = shadow2Offset.width + round(rectangleBorderRect.size.width);
        CGFloat yOffset = shadow2Offset.height;
        CGContextSetShadowWithColor(context,
                                    CGSizeMake(xOffset + copysign(0.1, xOffset), yOffset + copysign(0.1, yOffset)),
                                    shadow2BlurRadius,
                                    shadow2);
        
        [rectanglePath addClip];
        CGAffineTransform transform = CGAffineTransformMakeTranslation(-round(rectangleBorderRect.size.width), 0);
        [rectangleNegativePath applyTransform: transform];
        [[UIColor grayColor] setFill];
        [rectangleNegativePath fill];
        

    }
    CGContextRestoreGState(context);
    
    UIImage *noise = [UIImage imageNamed:@"noise.png"];
    CGSize imageViewSize = rect.size;
    UIGraphicsBeginImageContext(imageViewSize);
    CGRect imageRect;
    imageRect.origin = CGPointMake(0.0, 0.0);
    imageRect.size = CGSizeMake(noise.size.width, noise.size.height);
    CGContextRef imageContext = UIGraphicsGetCurrentContext();
    CGContextSetAlpha(imageContext, 0.3);
    CGContextDrawTiledImage(imageContext, imageRect, noise.CGImage);
    UIImage *finishedImage = UIGraphicsGetImageFromCurrentImageContext();
    UIGraphicsEndImageContext();
    CGImageRef cgImage = finishedImage.CGImage;
    CGContextDrawImage(context, rect, cgImage);
    CGContextSetBlendMode(context, kCGBlendModeOverlay);
    
    
    //// Cleanup
    CGGradientRelease(gradient);
    CGColorSpaceRelease(colorSpace);}