https://bugs.kde.org/show_bug.cgi?id=466135
Bug ID: 466135
Summary: Cascading windows should be more intuitive
Classification: Plasma
Product: kwin
Version: 5.27.0
Platform: unspecified
OS: Linux
Status: REPORTED
Severity: normal
Priority: NOR
Component: core
Assignee: kwin-bugs-n...@kde.org
Reporter: s+...@erdbeermil.ch
Target Milestone: ---
SUMMARY
Windows are now being cascaded after https://bugs.kde.org/show_bug.cgi?id=58063
was implemented for 5.27. This feature can currently be a bit unexpected in
some specific scenarios, and I'd like to suggest changing it slightly to take
care of this.
As an example scenario, consider this: a user has opened a Dolphin window with
a relatively small window size. They have opened a maximized terminal emulator
above this Dolphin window. They then open System Settings, and its window is
larger than the Dolphin window. The System Settings window is then being
cascaded, despite Dolphin being behind the (maximized) terminal emulator.
My proposal would be: do not consider windows that are already being covered by
other existing windows when deciding whether a new window is being cascaded or
not. In the example scenario above, the System Settings window is being
cascaded, even though the Dolphin window that triggers this behavior is not
currently visible to begin with.
STEPS TO REPRODUCE
1. Set window placement to "Centered"
2. Open a small window
3. Open or move a maximized window in front/on top
4. Open a window that would cover the previously opened small window
OBSERVED RESULT
The window opened last is being cascaded, therefore being off center.
EXPECTED RESULT
The window is not being cascaded, because cascading it does not prevent the
small window being covered in this case, as it had already been covered before.
SOFTWARE/OS VERSIONS
KDE Plasma Version: 5.27.0
ADDITIONAL INFORMATION
This may also be of relevance: as of this change, forcing a centered window
placement via "Window Rules" -> "Initial Placement" can also cascade the
window. This may be unwanted behavior, assuming the user actually wants to
force the window to be in a centered position.
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