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https://issues.apache.org/jira/browse/PIVOT-1060?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17320505#comment-17320505
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Roger Lee Whitcomb commented on PIVOT-1060:
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Same platforms as screenshots:
On OSX: Family="Courier", Face="Courier", height=18.0,
ascent=13.5703125, descent=4.4296875, leading=0.0
On Windows: Family="Monospaced", Face="Monospaced.plain", height=23.501953,
ascent=18.09668, descent=5.4052734, leading=-0.0
Seems like the conversion / rounding from float to integer coordinates are
probably the issue here.
> Inconsistencies with font measurement on some platforms
> -------------------------------------------------------
>
> Key: PIVOT-1060
> URL: https://issues.apache.org/jira/browse/PIVOT-1060
> Project: Pivot
> Issue Type: Bug
> Components: wtk-terra
> Environment: Windows 10 with 18 pt FontUtilities.MONOSPACED_FONTS
> (which could be any of "Courier", "Courier New", "Andale Mono", "Monaco",
> "Menlo", or "MONOSPACED" depending on platform).
> Reporter: Roger Lee Whitcomb
> Assignee: Roger Lee Whitcomb
> Priority: Minor
> Fix For: 2.1.0
>
> Attachments: font_measure_osx.png, font_measure_windows.png
>
>
> Using a (new) NumberRuler with both TextArea and TextPane shows
> inconsistencies (only on Windows that I can tell) between the font height and
> positioning between the ruler and the two components. Specifically:
> * with TextPane the numbers are ~1 pix lower in ruler than in text
> * with TextArea the numbers in ruler are same ~1 pix lower on normal lines,
> BUT on wrapped lines the TextArea seems to ignore leading so that the lines
> get higher and higher WRT ruler
> On OSX there seems to be none of the problems.
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