[Bug] Moving window between monitors using mouse doesn't always work

[KaKi87]

Hello,

When dragging a window from a monitor, one of the following often happens when dropping it into another one :

• the window goes back to its previous position, and I have to try again ;
• the window stays where the cursor is instead of being repositioned, and I have to drag it back to its previous monitor before trying again.

Thanks

[leukipp]

• the window goes back to its previous position, and I have to try again ;

A window is assigned to a monitor if the center point (of the rectangular layout) is located inside the monitor. The position of the grabbing cursor is then mostly irrelevant, but must be at least also inside the new monitor.

This means that a window must be moved at least half the width/height into another monitor, such that a screen swap is initiated. This mechanism is intentional, to handle literal "edge cases", where windows are partial moved (due geometry reload, etc.) over the edges of screens.

• the window stays where the cursor is instead of being repositioned, and I have to drag it back to its previous monitor before trying again.

This seems to be a timing issue (ewmh events are fired late) and I will have to look into it.

[KaKi87]

Hello,
Any news on this ?
Thanks

[leukipp]

This means that a window must be moved at least half the width/height into another monitor, such that a screen swap is initiated.

Starting with v2.3.2 the behavior is now different:

• Window swaps between one tiled and one untiled monitor will require that the window center is inside the new screen (as previous).
• Window swaps between two tiled monitors will only require that the grabbing cursor position is inside the new screen (improved).

This means that the drag/drop behavior between tiled monitors is now more intuitive and user friendly.

This seems to be a timing issue (ewmh events are fired late) and I will have to look into it.

The issues may still occur from time to time, but should have noticeably improved starting with v2.3.2.
Mostly GNOME based (Muffin/Mutter/Marco/Metacity...) window managers are causing issues (see #37).

Closing for now, feel free to create a new issue with detailed information's if you run into further problems.

[KaKi87]

Well, I'm still experiencing the issue : try a move, it fails, try the same again, it succeeds.

I'm not sure I should create a new issue since I can't find anything that explains what makes it succeed or fail, sorry

[KaKi87]

Hello ?