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  1. JDK
  2. JDK-8299753

Tree/TableView: Column Resizing With Fractional Scale

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Details

    • Bug
    • Resolution: Unresolved
    • P4
    • tbd
    • jfx20
    • javafx
    • None
    • Fix Understood
    • windows

    Description

      In the presence of snapping and fractional scale, the implemented algorithm could never work correctly. The reason is that the distance between snapped positions is not the same. As a result, changing a single column width requires shifting of the subsequent or all the columns, which in turn might require a change in their widths, and so on.

      This makes me think that a different algorithm might be needed, a simulated annealing perhaps.

      The issue can be reproduced on Windows by setting fractional scale:

      Windows 11:
      Settings -> System -> Display -> Scale -> 125% (or 225% ...)

      In the attached video clip, when resizing a column under AUTO_RESIZE_FLEX_NEXT_COLUMN policy, only subsequent columns should get resized. Instead, we see that columns to the left of the one being resized are affected. This does not happen with integer scales or on Mac.

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        Issue Links

          is blocked by

          Enhancement - null JDK-8311527 Region.snapInnerSpace*()

          • P4 - Minor loss of function, or other problem where easy workaround is present.
          • In Progress
          relates to

          Enhancement - null JDK-8293119 Additional constrained resize policies for Tree/TableView

          • P3 - Major loss of function.
          • Resolved

          Bug - A problem which impairs or prevents the functions of the product. JDK-8264591 HBox/VBox child widths pixel-snap to wrong value

          • P4 - Minor loss of function, or other problem where easy workaround is present.
          • Open

          Bug - A problem which impairs or prevents the functions of the product. JDK-8299755 Tree/TableView: Cursor Decouples From Divider When Resizing With Fractional Scale

          • P4 - Minor loss of function, or other problem where easy workaround is present.
          • In Progress

          Bug - A problem which impairs or prevents the functions of the product. JDK-8305709 [testbug] Tree/TableViewResizeColumnToFitContentTest fails with fractional screen scale

          • P4 - Minor loss of function, or other problem where easy workaround is present.
          • Resolved

          Bug - A problem which impairs or prevents the functions of the product. JDK-8306571 [testbug] Skip Tree/TableViewResizeColumnToFitContentTest with fractional screen scale

          • P4 - Minor loss of function, or other problem where easy workaround is present.
          • Resolved

          Enhancement - null JDK-8311527 Region.snapInnerSpace*()

          • P4 - Minor loss of function, or other problem where easy workaround is present.
          • In Progress
          links to

          Review Review openjdk/jfx/1156

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              angorya Andy Goryachev
              angorya Andy Goryachev
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              Dates

                Created:
                Updated: