On Fri, 28 Oct 2022 06:42:21 GMT, Johan Vos <j...@openjdk.org> wrote:
>> The root problem is actually broader than stated in the JBS issue. This PR
>> now translates screencoordinates from absolute coordinates into coordinates
>> that take the platformScale into account.
>> The whole process is complicated by the fact that throughout our code, we
>> use e.g. `x` and `y` without clearly stating if those are absolute, logical,
>> screen or rendering coordinates.
>> I believe the most consistent approach is to have the different entry points
>> (e.g. a Glass Window or a JFXPanel) to deal with platformScale before
>> passing screen coordinates. This is already done in the Glass approach, and
>> this PR does the same in JFXPanel. That means some code is duplicated, but
>> since this is only about 12 lines, and said code lives in 2 different
>> modules, I think it's not worth the hassle of moving that into e.g. the base
>> module.
>
> Johan Vos has updated the pull request incrementally with one additional
> commit since the last revision:
>
> address reviewer comments
> Fix detection on screen, based on awtScale factors
I think this looks basically correct, although I did leave a couple questions /
comments inline. I'll test it next week.
modules/javafx.swing/src/main/java/javafx/embed/swing/JFXPanel.java line 387:
> 385: private Dimension2D convertSwingToFxPixel(GraphicsConfiguration g,
> float wx, float wy) {
> 386: float newx, newy;
> 387: Screen screen = findScreen(getGraphicsConfiguration());
Did you mean to use the passed in graphics config, `g`? If not, you might
remove the `g` parameter, since it is otherwise unused.
modules/javafx.swing/src/main/java/javafx/embed/swing/JFXPanel.java line 400:
> 398: float py = screen.getPlatformY();
> 399: newx = sx + (wx - px) * awtScaleX / pScaleX;
> 400: newy = sy + (wy - py) * awtScaleY / pScaleY;
`px` and `py` are already (scaled) "FX" coordinates, so I'm not sure AWT scale
should be applied to that. I might be missing something here.
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PR: https://git.openjdk.org/jfx/pull/924
