Fix for JDK-8092439 and JDK-8092064 Monocle currently hard-codes a single Screen, and the `staticScreen_getScreens()` method will never return more than 1 Screen.
This PR introduces the possibility to deal with multiple screens, which is not uncommon on embedded systems. By default, the `staticScreen_getScreens()` method will still return a single screen, but the sub-platforms can now return multiple screens. The EGL subplatform will now query the low-level drivers, and if they detect multiple displays, multiple `Screen` instances will be configured. The low-level native implementation for getting the number of physical screens and there characteristics is deferred to the real low-level libraries (for example, an X11 based approach can do it in a different way then a DRM based approach). ------------- Commit messages: - Allow Monocle implementations to provide multiple screens. Changes: https://git.openjdk.java.net/jfx/pull/426/files Webrev: https://webrevs.openjdk.java.net/?repo=jfx&pr=426&range=00 Issue: https://bugs.openjdk.java.net/browse/JDK-8092439 Stats: 298 lines in 7 files changed: 275 ins; 0 del; 23 mod Patch: https://git.openjdk.java.net/jfx/pull/426.diff Fetch: git fetch https://git.openjdk.java.net/jfx pull/426/head:pull/426 PR: https://git.openjdk.java.net/jfx/pull/426
