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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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Description:
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
Changing these from int to float will require various other methods and members
to be updated as well.
was:
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.
> 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
> Changing these from int to float will require various other methods and
> members to be updated as well.
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