Flash transparency

[weezelboy]

I'd like to switch from Awesomium to an open source alternative and Cef# looks great but I need flash to support transparency. Is this a nightmare to implement?

[anthony taranto]

I believe a few people are using CefSharp in this way, maybe they can comment on steps involved.

[weezelboy]

I forgot to mention I'm using WPF

[anthony...@gmail.com]

It should be even easier in WPF. The Wpf WebView control should act like any other WPF control.

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[weezelboy]

To be clear I'm not talking about the transparency of the WPF control, but the transparency of the HTML/SWF. For example if I rendered a blank web page with 'background:'transparent'' would the WPF control display as white or transparent? This allows me to overlay non rectangular and semi-transparent SWF's on top of other WPF controls.

[anthony taranto]

Not sure, you'll have to try it out and let us know.

The WPF control itself won't adjust its transparency based on the web
content, you'll most likely have to set the WPF Opacity property. The
WPF control is essentially just a System.Windows.Controls.Image.

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[weezelboy]

I noticed the paint handlers are using the format PixelFormats::Bgr32. Is there any reason this cant be PixelFormats::Bgra32 to preserve the transparency?

[anthony taranto]

Maybe, have you tried it?

[weezelboy]

N, I can't build in VS2010.

[Jack O'Connor]

I've found that Visual C++ Express 2008 works find for building CefSharp (though not the test/example projects), if you want to try it.

On Thu, May 31, 2012 at 12:28 PM, weezelboy <mti...@gmail.com> wrote:

N, I can't build in VS2010.

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[Dana Cartwright]

I know this thread is over a year old, but I did try this out (compiling under VS2010). I found that this does indeed work if you combine the idea of Bgra32 rendering with a call to CefWindowInfo.SetTransparentPainting(TRUE). I have submitted a pull request to CefSharp to implement this, since I think it's general purpose (but I could easily be wrong about that, feel free to set me straight in the pull request).

https://github.com/cefsharp/CefSharp/pull/161

[weezelboy]

I've come across an issue with transparency in Flash. It seems portions of the control do not get rendered correctly. I've attached an example where the black should be transparent. Any obvious reason for this?