On Sun, 30 Aug 2020 13:20:49 GMT, Jeanette Winzenburg <faste...@openjdk.org> wrote:
>> When setting the cell height to a fixed value with setFixedCellSize(), >> column virtualization can improve performance. >> >> As the next step, I think it is possible to try to enable column >> virtualization regardless of whether >> setFixedCellSize() is set or not. Before doing this step, the direct access >> validation of the internal structure of the >> test code needs to be changed via the public API. > > this indeed improves scrolling performance considerably (from extremely > lagging to smooth following the mouse when > dragging the thumb of the vertical scrollbar). > As a side-effect, start-up time of TreeTableView seems to increase > considerably (at least by a factor of 3 to 4, > probably not linear in # of columns) - see f.i. the [example in > JDK-8166956](https://bugs.openjdk.java.net/browse/JDK-8166956). Any idea why > that might happen? Since there was a problem that the cell was not updated when the window was maximized, I added a fix to TreeTableViewSkin.java. Added test code (BigTreeTableViewTest) for TreeTableView to the first post. @kleopatra Does the test code I added (BigTreeTableViewTest.java) also have side effects? ------------- PR: https://git.openjdk.java.net/jfx/pull/125
