NSScreencast Episode #40 Shine Effect

Shine Effect - NSScreencast

タイトルバーにShineエフェクトをつける

• shine logo on titlebar
  • logo - black
  • highlighted version - white
  • mask - black
• titleView = logo view (UIImageView)
• CALayer
  • CALayer *shineLayer = [CALayer layer];
  • shineLayer.contents = (id)[shineImage CGImage];
  • mask
    • mask.backgroundColor = [[UIColor clearColor] CGColor];
    • mask.contentsGravity = kCAGravityCenter;
    • mask.frame = CGRectMake(-width, 0, width * 1.25, height);
  • Animating the mask
    • CABasicAnimation *anim = [CABasicAnimation animationWithKeyPath:@"position.x"];
    • anim
      • .byValue
      • .repeatCount = HUGE_VALF;
      • .duration
      • .timingFunction
        • = [CAMediaTimingFunction functionWithName:kCAMediaTimingFunctionEaseInEaseOut];
  • [self.layer addSublayer:shineLayer];
  • [mask addAnimation:anim forKey:@"shine"];