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I am using a Ubuntu-mate 16.04 and I use it everyday and I like it a lot. I am wondering if it is possible to display an image in the background of the file-manager.

I have taken a look at this similar question but that one talks about nautilus not caja. This discussion talks about modifying the theme file.

My current theme file index.theme has the following contents:

[Desktop Entry]
Name=handsOn
Type=X-GNOME-Metatheme
Comment=

[X-GNOME-Metatheme]
GtkTheme=Ambiant-MATE
MetacityTheme=Ambiant-MATE
IconTheme=Humanity
GtkColorScheme=fg_color:#4c4c4c4c4c4c,bg_color:#a998a4daa4da,text_color:#3c3c3c3c3c3c,base_color:#c56abdf2b61d,selected_fg_color:#ee84e895f349,selected_bg_color:#8787a7a75252,tooltip_fg_color:#ffffffffffff,tooltip_bg_color:#000000000000
CursorTheme=DMZ-White
CursorSize=24
NotificationTheme=Coco
BackgroundImage=/home/vvy/Pictures/wall.jpg

I think I will have to add something to the line beginning with GtkColorScheme=... to put up an image in the background. Please help me with those magic keywords. Thanks.

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1 Answer 1

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You have to use Caja GUI:

Edit → Backgrounds and Emblems and then drag needed Pattern or Color

Backgrounds and Emblems

to the Caja window of interest. You can use your custom image by clicking on Add a New Pattern (image should allow patterning).

To reset the background setting you have to drag Reset pattern or color to the window.

Notes:

  1. the background will be shown in Icon View and Compact View.

  2. you have to set 'background-image' path by using gsettings:

    gsettings set org.mate.caja.preferences background-set 'true'
gsettings set org.mate.caja.preferences background-color ''
gsettings set org.mate.caja.preferences background-uri 'file:///usr/share/caja/patterns/dots.png'

  3. also you have to set 'background-color' by using gsettings:

    gsettings set org.mate.caja.preferences background-set 'true'
gsettings set org.mate.caja.preferences background-uri ''
gsettings set org.mate.caja.preferences background-color '#E5E5E5'

  4. to remove background programmatically use:

    gsettings set org.mate.caja.preferences background-set 'false'
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  • So embarrassing! The option was right there. Its so nice that there is no need to fiddle with keywords. One additional detail, can we do alpha setting for the selected image?
    – vyi
    Jul 12, 2019 at 18:14
  • I'm not sure about alpha setting, but you can try to adjust alpha channel in GIMP for PNG and GIF images :)
    – N0rbert
    Jul 12, 2019 at 18:17
  • Done! Thank you for the answer.
    – vyi
    Jul 12, 2019 at 18:48

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