https://bugs.documentfoundation.org/show_bug.cgi?id=93821
Bug ID: 93821
Summary: not storing & restoring window contents under menus
...
Product: LibreOffice
Version: unspecified
Hardware: Other
OS: All
Status: UNCONFIRMED
Severity: normal
Priority: medium
Component: graphics stack
Assignee: [email protected]
Reporter: [email protected]
The LibreOffice code-base dates from an era when:
a) rendering was impossibly slow and
b) window managers didn't keep copies of occluded windows.
The world has move on since 1995 ;-) as such we should hack some of the
complexity out here. The currently vcl/ menu structure literally screen-shots
the area underneath a popup menu, stores it, tries to track if it is drawn over
while the menu is up (to invalidate it), and then restores that afterwards.
At least - that's what it looks like checkout:
vcl/source/window/floatwin.cxx
checkout 'EnableSaveBackground' and others. In a nutshell I think we want to
have:
vcl/inc/svdata.hxx: bool mbNoSaveBackground;
// true: save background is unnecessary or even less performant
set - unconditionally true for all backends: and just push that through the
code to remove the horrors =)
Thanks !
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