Re: Erasing drawn content
Re: Erasing drawn content
- Subject: Re: Erasing drawn content
- From: "Paul Sanders" <email@hidden>
- Date: Tue, 8 Jun 2010 19:00:04 +0100
On Jun 8, 2010, at 10:03 AM, Kyle Sluder <email@hidden> wrote:
> You can't do this. All your views are composited back-to-front into
> the window's backing store, so filling with anything will obliterate
> your web view's drawing.
Of course, silly me. Can something be done with a layer-backed view here, used as some kind of overlay? Alternatively, one could position a borderless window over the WebView and draw your rectangles into that. This window can be made initially transparent by:
- calling setOpaque: NO on the window
- having the content view return isOpaque as YES
- filling the content view with clearColor
Then draw your rectangles in the content view of this window and the NSRectFill trick should work.
Regards,
Paul Sanders.
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