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https://issues.apache.org/jira/browse/PIVOT-633?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12910164#action_12910164
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Greg Brown commented on PIVOT-633:
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Oh, by the way - I also tried swapping out the implementation of drawRect()
with one that uses Rectangle2D and it didn't resolve the rounding issue.
Depending on scale, a one-pixel wide gap may sometimes appear regardless of
whether AA is on or off. So this may simply be a rounding issue in Java2D
itself that we have to live with.
> Eliminate use of GraphicsUtilities.drawRect() and drawLine()
> ------------------------------------------------------------
>
> Key: PIVOT-633
> URL: https://issues.apache.org/jira/browse/PIVOT-633
> Project: Pivot
> Issue Type: Improvement
> Components: wtk
> Reporter: Greg Brown
> Priority: Minor
>
> These methods were originally created to provide better rendering behavior
> than the corresponding java.awt.Graphics#drawRect() and drawLine() classes.
> However, a better approach is to call Graphics2D#draw() with a Rectangle2D or
> a Line2D. This produces much better results when the display is scaled, since
> these primitives use true floating point values.
> A number of components including most buttons have already been updated to
> use the java.awt.geom classes, but many skins are still using
> GraphicsUtilities and should also be updated.
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