Window screenshots are incorrectly sized, resulting in an undesired border

[adatum]

Expected behaviour

Alt+Print Screen should take a screenshot of only the window in focus.

Actual behaviour

The screenshot area is larger than the window, leaving an undesired border. In the image below, some of the desktop background is showing as a border around the window screenshot.

I'm not certain, but the problem seems to be limited to windows. Dialog boxes, such as "About MATE" show up correctly without the undesired border in window screenshots.

Steps to reproduce the behaviour

Open any window, eg. file manager, browser, terminal, and take a window screenshot with Alt+Print Screen.

MATE general version

1.22.1

Package version

1.22.1-1.fc30

Linux Distribution

Fedora 30 MATE

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[lukefromdc]

This is CONFIRMED here, and note that it happens only when the window borders included in the screenshot and (if using marco) compositing is used. I can see it with marco(w compositing) and with metacity, and I'm pretty sure that what's happening is the screenshot is picking up both visible and invisible borders (used for resize from outside the visible border area starting with marco 1.22.2/1.23/1 and also used in metacity).

This does NOT happen with IceWM, which does not support invisible borders, and with compiz-reloaded mate-screenshot can't pick up the borders at all. Thus, this is a surprise side effect of https://github.com/mate-desktop/marco/pull/503 , which solved the problem of windows being very hard to resize with the mouse in some metacity themes

[adatum]

Thanks for confirming. Now that you mentioned it, I just noticed the invisible window borders that make it much easier to resize windows. The size of the invisible borders does seem to match the undesired screenshot borders.

I don't have a specific date when the issue was first noticed, but it appeared only fairly recently and does seem to agree with the invisible border feature's merge and eventual release.

[raveit65]

Latest marco in fedora support invisible borders. https://koji.fedoraproject.org/koji/buildinfo?buildID=1288352 marco-1.22.2-1.fc30

* Mon Jun 17 2019 Wolfgang Ulbrich <fedora@raveit.de> - 1.22.2-1
- update 1.22.2 release
- add support for invisible borders

And yes , i can confirm this.

[raveit65]

It's not the same but you can exclude the window-decoration from screenshots.

[rave@mother ~]$ gsettings get org.mate.screenshot include-border
false

This confirms that it is a problem with the new invisible-borders.

[clefebvre]

@monsta also related you mentioned were the little theme thumbs in the theme selector.

[lukefromdc]

I can confirm an "ears" issue with corners on theme thumbnails. which is a transparency issue

[adatum]

This issue is still present with MATE 1.22.2 and Fedora 31.

[InfoLibre]

I've got this bug with Kazam, mate-screenshot, ScreenGrab and Shutter on Linux Mint MATE 19.3.

[adatum]

Issue persists in MATE 1.24.0 and Fedora 32.

Any progress on this?

[InfoLibre]

Websites with ugly screenshots began to appear : https://tugaleres.com/2020/07/13/linux-mint-migration-de-la-version-19-3-vers-la-version-20/ :jack_o_lantern:

[lukefromdc]

As a workaround, you should be able to temporarily turn compositing off in marco from "Windows" in mate-control-center, so as to suppress the invisible borders and keep the wide,dark border off your screenshot. Simpler to exclude the window decorations unless you need them to be shown however,

[davidhedlund]

As a workaround, you should be able to temporarily turn compositing off in marco from "Windows" in mate-control-center, so as to suppress the invisible borders and keep the wide,dark border off your screenshot. Simpler to exclude the window decorations unless you need them to be shown however,

Thanks, this could be executed with: gsettings set org.mate.Marco.general compositing-manager false