<Swing Dev> RFR: 8251377: [macos11] JTabbedPane selected tab text is barely legible

[Alan Snyder]

On Nov 24, 2020, at 7:21 PM, Prasanta Sadhukhan <psadhukhan at openjdk.java.net> wrote:
> 
> On Tue, 24 Nov 2020 21:23:38 GMT, Sergey Bylokhov <serb at openjdk.org <mailto:serb at openjdk.org>> wrote:
> 
>>> Tried to find and change tabpane background color for "selected" tab but unable to do so. 
>>> Tried changing AquaLookAndFeel.tabBackgroundColor, TabbedPane.background color to no avail. Tried to set background by calling tabPane.setbackground() in AquaTabbedPaneUI.installDefaults but it sets background for non-selected tab (keeping black background for selected tab in mohave unchanged). I see it's been like that at least from jdk8GA.
>>> Post to apple forum is unanswered.
>> 
>>> When inactive, I use 0 0 0 192. As far as I can tell, this does not correspond to a named color.
>>> It would be wrong to assume that Apple only uses named colors in their UIs.
>>> The named colors are for application developers, not for Apple itself.
>> 
>> The problem here is that we do not control the color of the tab pane, it is controlled by Apple, and if we hardcore some color on our side we will get the same bugs again and again. I am sure that a similar bug will come in the dark mode if we will enable it.
> 
> Since color of tabpane is controlled by Apple, Can you point me to the code where we call Apple api to draw the color of tabpane?
> 

You don’t. All you do is ask for a Tab style button:
protected final AquaPainter<JRSUIState> painter = AquaPainter.create(JRSUIStateFactory.getTab());
It's a nice abstract interface, but it lacks the corresponding API for getting the Tab text color to match a given appearance and state.

Basically, the API is incomplete and has not been kept up to date.
Otherwise, VAqua would not exist. :-)

-------------- next part --------------
An HTML attachment was scrubbed...
URL: <https://mail.openjdk.java.net/pipermail/swing-dev/attachments/20201124/e9e6f652/attachment-0001.htm>