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https://issues.apache.org/jira/browse/NETBEANS-4166?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Eirik Bakke updated NETBEANS-4166:
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Labels: HiDPI (was: )
> Review likely inaccurate int-based character width calculations in editor UI
> ----------------------------------------------------------------------------
>
> Key: NETBEANS-4166
> URL: https://issues.apache.org/jira/browse/NETBEANS-4166
> Project: NetBeans
> Issue Type: Bug
> Components: editor - Painting & Printing
> Affects Versions: 11.3
> Environment: Windows and MacOS with HiDPI/retina displays, Java 9 and
> above
> Reporter: Eirik Bakke
> Priority: Minor
> Labels: HiDPI
>
> While fixing NETBEANS-346, I discovered several other editor painting
> coordinate calculations which are likely inaccurate due to rounding errors.
> Fixing these will be a bit of work, though, and it may be preferable to wait
> until specific bugs are identified before doing so, so that the changes can
> be verified to have had the desired effect.
> The following members should likely be changed from an int to a float, and
> initialized from font metrics to full precision:
> * org.netbeans.editor.EditorUI.defaultSpaceWidth
> * org.netbeans.modules.editor.lib.drawing.DrawEngine.spaceWidth,
> defaultSpaceWidth, and possibly fragmentWidth
> * org.netbeans.modules.editor.lib.drawing.DrawGraphics.defaultSpaceWidth
> These changes will propagate to related APIs.
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