Support dynamic zoom level

[ghost]

Dear Leaningtech,

I am currently trying your applet runner. I noticed that when moving a browser window from one screen to another screen, there is a glitch in the graphics. I have two differently scaled screens which works fine with the new Windows 10. But the applet runner seems to get confused.

Before moving the browser window from one screen to another:

After moving the browser window from one screen to another:

I guess the problem is not only related to JTextComponent. Also the menus etc.. are now shown much to large and displaced, when I start using the menus.

[alexp-sssup]

CheerpJ does not currently support dynamic changes in the zoom level or devicePixelRatio. This is a known issue.

[ghost]

Smol preliminary workaround, reloading applet on other screen. This works fine.