[whatwg] [canvas] inner shadows

Ian Hickson ian at hixie.ch
Thu Sep 20 15:49:57 PDT 2012

On Thu, 26 Apr 2012, Tyler Larson wrote:
> Shadows can be applied to the outside of anything. This is a great 
> feature that is otherwise rather difficult to recreate but why not 
> enable users to be able to have inner shadows? Things like beveling, 
> embossing and many other stylistic things that are used in today designs 
> rely on inner shadows. 
> http://www.whatwg.org/specs/web-apps/current-work/#shadows
> It could just be a boolean value noting if rendering is done to the 
> inside or the outside of what is currently drawn into the context. In 
> CSS we have inset box-shadows, which gives a similar effect. 
> http://www.w3.org/TR/css3-background/#the-box-shadow
> Can we add this to the canvas shadows please?

Can't you do this using clip() easily enough? Maybe I'm missing something 
important here. Can you elaborate?

Ian Hickson               U+1047E                )\._.,--....,'``.    fL
http://ln.hixie.ch/       U+263A                /,   _.. \   _\  ;`._ ,.
Things that are impossible just take longer.   `._.-(,_..'--(,_..'`-.;.'

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