Draw with gloss

gistfile1.m

- (void)drawRect:(CGRect)rect
{
    // Drawing code
    CGContextRef currentContext = UIGraphicsGetCurrentContext();
    
    CGContextSetFillColorWithColor(currentContext, [UIColor colorWithRed:1.0 green:1.0 blue:1.0 alpha:0.35].CGColor);
    CGContextAddRect(currentContext, CGRectMake(0, 1, self.frame.size.width, 1));
    CGContextFillPath(currentContext);
    
    CGGradientRef glossGradient;
    CGColorSpaceRef rgbColorspace;
    size_t num_locations = 2;
    CGFloat locations[2] = { 0.0, 1.0 };
    CGFloat components[8] = { 1.0, 1.0, 1.0, 0.35,  // Start color
        1.0, 1.0, 1.0, 0.1 }; // End color
    
    rgbColorspace = CGColorSpaceCreateDeviceRGB();
    glossGradient = CGGradientCreateWithColorComponents(rgbColorspace, components, locations, num_locations);
    
    CGRect currentBounds = self.bounds;
    CGPoint topCenter = CGPointMake(CGRectGetMidX(currentBounds), 1.0f);
    CGPoint midCenter = CGPointMake(CGRectGetMidX(currentBounds), CGRectGetMidY(currentBounds));
    CGContextDrawLinearGradient(currentContext, glossGradient, topCenter, midCenter, 0);
    
    CGGradientRelease(glossGradient);
    CGColorSpaceRelease(rgbColorspace);
}