To me it also looks strange and causes an unpredictable behavior when the main/default screen is on the right. But I guess it is too late to fix in jdk9, I’ll file a bug for jdk10 to investigate it.
> Hello Sergey, > > Main screen on Windows and Mac OS always has (0,0) coordinates. On Linux main > screen may be shifted, e.g. if it is located to the right of secondary one > (800,0). > > I think that it is feasible to unify Linux main screen behavior with Mac OS > and Windowsa and make it always located at (0,0). > > Thanks, > > Alexander. > > On 02/13/2017 12:18 PM, Sergey Bylokhov wrote: >> Hello, >> Please review the fix for jdk9. >> >> Toolkit.getSreenSize() returns the size which is different from the size of >> the main screen(as it is specified). >> >> Since jdk5 on linux it is return the size of the virtual screen(which >> includes all displays) in pixels. It was discussed in JDK-XXXXXXX, but since >> support of HiDPI was introduced it is return something different: «the size >> of the virtual screen in pixels divide by the scale factor of the main >> screen». So right now the result of this method does not match to the >> virtual screen size in the users space, it also does not match the size of >> the virtual screen in pixels, and also does not match to the size of the >> main screen. >> >> This is a request to unify behavior of such methods between >> linux/windows/macOS in multi-screen environment. >> >> No new issues were found by jtreg/jck. >> >> Bug: https://bugs.openjdk.java.net/browse/JDK-8168307 >> Webrev can be found at: http://cr.openjdk.java.net/~serb/8168307/webrev.01 >> >
