eclipseubuntu-10.04

Eclipse, change popup text background color when hovering the mouse on a keyword

Ubuntu 10.04.1 new theme has by default all windows background colors set to black.
I don't want to change that.

In Eclipse, the interface didn't change much due to 10.04.1 - except for one annoying thing:
when the mouse hovers over a keyword - a variable for instance - the type (...) of that keyword is displayed in a small pop-up window.
The problem since 10.04.1, is that the text is in black color while the background is also black.

Is there a way to change that background color in Eclipse?

Solution

  • Update Dec. 2018: as mentioned in howlger's answer, Eclipse Oxygen 4.7 (June 2017) does now include a way to configure the background color in popups:

    See "Colors in interactive popups"

    Interactive popups like JDT's Quick Outline don't use the platform's tooltip colors any more, since those were sometimes hard to read.

    Old style:

    https://www.eclipse.org/eclipse/news/4.7/images/old-popup-color-constants.png

    New style:

    https://www.eclipse.org/eclipse/news/4.7/images/new-popup-color-constants.png

    In that same Colors and Fonts section, you will find:

    • Code assist

      • Basic > Content Assist background color -> change
      • Basic > Content Assist foreground color -> change

    • java doc

      • Java > Javadoc background ( overrides default: information background color) -> change

    Original answer (2010-2012)

    All the various popup background color are managed in Preferences > Java > Editor (like the one for the completion list popup in bug 133615).
    Other background colors are in General > Appearance > Colors and Font (type background in the filter field).

    But the type popup seems to stick to a system color, which is why you see a black background.
    If this is truly the case, it is worth reporting as a bug.

    The OP confirms it is not the case, actually:

    It was in Preferences > C/C++ > Editor > Source hover background, and had to untick the "System default" (because the shown color was light-gray!)

    On Ubuntu 12.04+, the post "How to change tooltip background color in Unity?" also mentions:

    /usr/share/themes/Ambiance/gtk-2.0/gtkrc

    The recent post (December 2012) "Eclipse Papercut #10 – Eclipse on Ubuntu: Fixing the black background color in hover" (from Lars Vogel) confirms:

    The relevant properties are tooltip_fg_color and tooltip_bg_color.
    Just search for these values, the position changes sometimes between releases, currently they are at the very top of the file.

    The following setting uses more reasonable colors.

    tooltip_fg_color:#000000
tooltip_bg_color:#f5f5c5

    pointhi adds in the comments:

    I also had to set the environment variable SWT_GTK3=0 before starting eclipse to get it working.