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Theming: reduce space between parts [message #1826343]

Thu, 23 April 2020 13:50

Eclipse User

Hello,

I'm currently experimenting with building a custom theme for the IDE, and was wondering how I would go about reducing the space between the different IDE parts (I think they're called sash containers?). See the attachment for more information.

Ideally, I would like to have just the borders of the different parts, without the padding in the middle. Can this be done with CSS or a simple custom CSS property handler?

Thanks in advance for your help!

Attachment: space.png
(Size: 5.33KB, Downloaded 158 times)

Re: Theming: reduce space between parts [message #1826388 is a reply to message #1826343]

Fri, 24 April 2020 05:03

Eclipse User

I don't know much about CSS styling, but I thick you want to define the style for the '.MPartSashContainer' CSS selector [1].

If I am correct, the MPartSash is rendered by a SashRenderer. That uses a SashLayout. It seems that sashWidth en margins are hardcoded, but they might be changable with CSS.

To explore the CCS elements you can use the CSS spy [2], latest version available at [3]

[1] https://www.vogella.com/tutorials/Eclipse4CSS/article.html
[2] https://marketplace.eclipse.org/content/eclipse-4-tools-css-spy
[3] https://download.eclipse.org/e4/snapshots/org.eclipse.e4.tools/latest/

Re: Theming: reduce space between parts [message #1826428 is a reply to message #1826388]

Fri, 24 April 2020 13:19

Eclipse User

Thanks for the answer Rolf!

I did a bit of digging and found out this piece of code that allows to override the Sash width: https://github.com/jeeeyul/eclipse-themes/blob/master/net.jeeeyul.eclipse.themes/src/net/jeeeyul/eclipse/themes/css/internal/handlers/SashWidthHandler.java

Unfortunately, setting any value below 2px does not have the desired effect. The resize cursor no longer appears and the space between the parts remains the same. I've even tried setting negative values, but to no avail, the contents of the part seem to "slide underneath" the borders (see attachment), with the space still there.

Attachment: negative-width.png
(Size: 2.29KB, Downloaded 164 times)

Re: Theming: reduce space between parts [message #1826538 is a reply to message #1826428]

Sun, 26 April 2020 14:52

Eclipse User

You could open an enhancement bug on Platform UI to support setting the sash width and to support resizing with thin (<4px).

Re: Theming: reduce space between parts [message #1826620 is a reply to message #1826538]

Mon, 27 April 2020 16:22

Eclipse User

Done! See bug 562536.

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