<AWT Dev> [9] Review request for 8014212: Robot captures black screen

[Alexander Zvegintsev]

Hello,

please review the fix
http://cr.openjdk.java.net/~azvegint/jdk/9/8014212/00
for the issue
https://bugs.openjdk.java.net/browse/JDK-8014212

This fix trying to use gdk_pixbuf_get_from_drawable () [0] to capture 
screenshot(basic image data handling could be found here[1]).
If it fails then we come back to our old method.
Translucency support[1] is also covered by this fix, but there is 
another issue with toFront() call which blocks passing of a JCK test.

P.S. On Solaris 11 windows appears with animation, thus sleep() call was 
added to work around this.

[0] 
https://developer.gnome.org/gdk2/stable/gdk2-Pixbufs.html#gdk-pixbuf-get-from-drawable
[1] 
https://developer.gnome.org/gdk-pixbuf/stable/gdk-pixbuf-The-GdkPixbuf-Structure.html#image-data
[2] https://bugs.openjdk.java.net/browse/JDK-7043845 Robot should be 
able take screenshots with translucent windows

-- 
Thanks,

Alexander.

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