EZAudio
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fix bug when using UIColor presets
There was a bug that in some cases could have glClearColor
set to undefined value.
The cause of this bug is the method
+ (void)getColorComponentsFromCGColor:(CGColorRef)color
red:(CGFloat *)red
green:(CGFloat *)green
blue:(CGFloat *)blue
alpha:(CGFloat *)alpha
That supposed the CGColorSpaceRef
returned by the UIColor
was always kCGColorSpaceGenericRGB
(see below)
- (void)setBackgroundColor:(id)backgroundColor
{
_backgroundColor = backgroundColor;
if (backgroundColor)
{
CGColorRef colorRef = [backgroundColor CGColor];
CGFloat red; CGFloat green; CGFloat blue; CGFloat alpha;
[EZAudioUtilities getColorComponentsFromCGColor:colorRef
red:&red
green:&green
blue:&blue
alpha:&alpha];
//
// Note! If you set the alpha to be 0 on mac for a transparent view
// the EZAudioPlotGL will make the superview layer-backed to make
// sure there is a surface to display itself on (or else you will get
// some pretty weird drawing glitches
//
#if !TARGET_OS_IPHONE
if (alpha == 0.0f)
{
[self.superview setWantsLayer:YES];
}
#endif
glClearColor(red, green, blue, alpha);
}
else
{
glClearColor(0.0f, 0.0f, 0.0f, 0.0f);
}
}
Notice that's not true when you pass as UIColor
things like [UIColor whiteColor]