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NSView getRectsBeingDrawn and WebKit plugin

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NSView getRectsBeingDrawn and WebKit plugin

Subject: NSView getRectsBeingDrawn and WebKit plugin
From: Fielke Gary <email@hidden>
Date: Wed, 1 Jun 2005 11:24:15 +0930

Hi all,

I know this possibly is better asked in webkit-sdk but I'll try here first......

I have developed a very small test app that uses getRectsBeingDrawn inside a custom view's drawRect method to draw two small portions of a larger image. (Of course, elsewhere in the app [myCustomView setNeedsDisplayInRect:rect1] and [myCustomView setNeedsDisplayInRect:rect2] are used.) As an application, the getRectsBeingDrawn correctly returns the two rects.

However, I have now converted this app to a WebKit plugin (Tiger only) so the customview now appears inside a webkit app such as Safari. Using the same code as above, the getRectsBeingDrawn now only returns ONE rect, not two. This single rect is the union of the two smaller rects.

Consequently, a webkit plugin I'm working on has less than optimal drawing performance.

Anyone have any thoughts on why this is so?

Thanks,
Gary

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