Re: NSWindow - Sheets - background alpha value

FROM : PGM
DATE : Sun Nov 25 23:31:13 2007

On 25-Nov-07, at 22:56 PM, Ricky Sharp wrote:

>
> On Nov 25, 2007, at 3:22 PM, PGM wrote:
>

>>>
>>> How do I override the Leopard defaults to display sheets with an 
>>> alpha of 1.0?
>>>
>>> My application uses a lot of NSWindow sheets - for a good reason.
>>>
>>> I do NOT want a semi-transparent background, nor do my users.
>>>

>>
>> Make the contentView of your window a custom view where you fill 
>> the rect with a solid colour. I actually used this to get rid of 
>> the pinstripes in Tiger, and it is not transparent in Leopard. I 
>> post the code down here, though that might be superfluous as it is 
>> really simple.
>>
>> Cheers, Patrick
>>
>> @interface PMPanelBackgroundView : NSView {
>>
>> }
>>
>> @end
>>
>>
>> #import "PMPanelBackgroundView.h"
>>
>>
>> @implementation PMPanelBackgroundView
>>
>> - (void)drawRect:(NSRect)rect
>> {
>>     [[NSColor colorWithCalibratedWhite:0.9337 alpha:0.98] set];
>>     NSRectFill(rect);
>> }
>>
>> @end

>
> If the goal here is to be 98% opqaue, you'll want to use 
> NSRectFillUsingOperation instead.  Otherwise, to reinforce the fact 
> that total opaqueness is desired, just set the alpha to 1.0.


I just copied the code from my app and forgot to change the alpha to 
one to match Keith's question. I actually don't remember whether my 
goal was 98% opaque, it's a while since I wrote this.

Patrick