linuxmint / linuxmint/cinnamon-desktop
Spanned wallpaper sizing could be better
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- Dominant language
- C
- Stars
- 249
- Forks
- 76
- Avg merge
- 8d 6h
- Merged PRs (30d)
- 2
Description
I have a kind of unusual monitor set up with two in landscape and a third in portrait orientation. When I try to span a wallpaper in Cinnamon instead of the expected result of the wallpaper covering the whole area as in other desktop systems, it only seems to cover the smallest area. Here's a reporesentation of what I have and the result I'm getting:

What I would like is for the wallpaper to fill a bounding box that encompasses all monitors and zoom to fit that with cropping as necessary.
This seems to be an issue in gnome-desktop but I'm posting it here since I don't use Gnome. The responsible file looks to be /libcinnamon-desktop/gnome-bg.c but I don't have enough of a grasp of what all the functions do to figure out where the exact problem lies.
Contributor guide
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First steps
- Read the whole issue, then the project's contributing guide.
- Comment on the issue to say you are picking it up — it saves two people doing the same work.
- Fork the repository and make your change on a branch.
- Open a pull request that references the issue number.
Research direction
Start in /libcinnamon-desktop/gnome-bg.c and inspect the wallpaper sizing and placement functions. Reproduce the three-monitor layout described in the issue, then trace how the available monitor area is calculated. Done means a spanned wallpaper fills the bounding box containing all monitors, cropping as needed.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- c
- Domain
- desktop
- Issue type
- Bug
- Difficulty
- 4/5
- Estimated time
- 3-5 days
- Activity status
- Stale
- Clarity
- Mostly clear
- Newbie friendliness
- 45/100