Re: Punching a hole in an NSImage
Re: Punching a hole in an NSImage
- Subject: Re: Punching a hole in an NSImage
- From: Guy English <email@hidden>
- Date: Thu, 02 Mar 2006 10:59:03 -0500
Hmmm ... Source Over should do it.
How are you rendering it? If it's in a custom view make sure the view returns NO from isOpaque - also remember Cocoa doesn't make any promises about overlapping views.
On Thursday, March 02, 2006, at 10:55AM, Ben Lachman <email@hidden> wrote:
>This was what I was doing, without success. So maybe it is something
>else... when I am passing compositeToPoint: in drawRect what
>operation should I use?
>
>->Ben
>
>
>On Mar 2, 2006, at 9:51 AM, Guy English wrote:
>
>> This will make a transparent hole in your image:
>>
>> [image lockFocus];
>> [[NSColor clearColor] set];
>> NSRectFill( rectOfHoleThroughImage );
>> [image unlockFocus];
>>
>> Hope that helps,
>> Guy
>>
>>
>> On 3/2/06, Ben Lachman <email@hidden> wrote:
>>> What's the easiest way to cut a rect out of an NSImage so that the
>>> view that is behind the image can show though? I've looked at the
>>> Cropped Image sample code but can't see how that applies to what I
>>> want to do.
>>>
>>> Thanks,
>>>
>>> ->Ben
>>>
>>>
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>>>
>>>
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