RFR: 8316518 javafx.print.Paper getWidth / getHeight rounds values, causing errors.

[Michael Strauß]

On Tue, 19 Sep 2023 11:56:39 GMT, Florian Kirmaier <fkirmaier at openjdk.org> wrote:

> The Method javafx.print.getWidth and getHeight returns a double of points.
> But the values are always rounded to full integers. This causes especially problems,
> with mm based Papers.
> 
> I asked in the mailing list, with the conclusion (me and John Hendrix) that is best to just fix this behavior by removing the rounding.

modules/javafx.graphics/src/main/java/javafx/print/Paper.java line 85:

> 83:             case MM    : return (dim * 72) / 25.4;
> 84:         }
> 85:         return dim;

Minor: you can use an enhanced `switch` expression here, which also ensures exhaustiveness:

return switch (units) {
    case POINT -> dim;
    case INCH -> dim * 72;
    case MM -> (dim * 72) / 25.4;
};

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PR Review Comment: https://git.openjdk.org/jfx/pull/1244#discussion_r1372483292