On Thu, 10 Mar 2022 18:23:18 GMT, Harshitha Onkar <d...@openjdk.java.net> wrote:
>> Previously while tabbing through the JTable cell, the cell highlighter/focus >> ring was not visible against the selection background. >> >> Changes are made to Aqua LAF to derive a brighter focus ring color by >> changing hue, saturation and brightness of selection background color so >> that it is visible while tabbing through `JTable` cells. A new method is >> added for this purpose which takes in `selectionBackground` color, does the >> hue, saturation and brightness manipulation and returns a new focus ring >> color. There are edge cases where the HSB transformation does not yield the >> right focus ring color, for these cases a default color is returned that is >> different and can be seen against the `selectionBackground`. >> >> **Edge Cases** >> **Selection Background** ----- **Returned Focus Ring Color** >> - White/ Black -----> Gray >> >> - Shade of Gray >> towards white (r=g=b >= 128) -----> Black >> >> - Shade of Gray >> towards Black (r=g=b < 128) ------> White >> >> A test case is added to compare the RGB difference between the original >> focus ring color & selection background and the brighter focus ring color & >> selection background. >> >> PS: The native L&F (Mac OS) and Swing L&F for JTable cell tabbing differs >> (on native tables the cell background turns white on focus with a cell focus >> ring). Since the background for Swing tables can be set by users and also >> overridden by subclassing `DefaultTableCellRenderer`, and to adhere to >> current implementation of Swing, the cell background changes are not >> incorporated. Only the Focus Ring/ Cell Highlighter is made more prominent >> against the selection background. > > Harshitha Onkar has updated the pull request incrementally with one > additional commit since the last revision: > > formatted line lengths, added method-level comments Before and After images of cell focus ring changes on SwingSet2. (cell focus on first cell)  ------------- PR: https://git.openjdk.java.net/jdk/pull/7768
