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Only set dummy X11 selection if we do not own it

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Before, we would continually set the selection to the empty string,
to maintain ownership. This causes problems with clipboard managers
GPaste and CopyQ. Further, in theory this should have better
performance since checking ownership should be faster than setting.

A disadvantage of this change is that the timestamp of the selection
will be old at this point in the code. However, when the selection
is requested, we put the selection contents at that point so the
selection timestamp should be accurate then. Further, the selection
contents are not accurate at this point in the code (they are just
the empty string), so it is not clear whether having an accurate
timestamp is beneficial.

Fixes #11715.
This commit is contained in:
Scott Kostyshak 2020-03-27 21:23:08 -04:00
parent cf628911d0
commit af4ee1a487
1 changed files with 3 additions and 2 deletions
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5
src/frontends/qt/GuiSelection.cpp
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@ -51,9 +51,10 @@ void GuiSelection::haveSelection(bool own)
// an application actually requests it.
// This way calling Selection::have() is cheap and we can do it as
// often as we want.
//LYXERR(Debug::SELECTION, "GuiSelection: setting dummy selection");
if (own)
if (own && !qApp->clipboard()->ownsSelection()) {
LYXERR(Debug::SELECTION, "GuiSelection: setting dummy selection");
qApp->clipboard()->setText(QString(), QClipboard::Selection);
}
// We don't need to do anything if own = false, as this case is
// handled by QT.
// FIXME (gb): This is wrong. What is missing here is rather a call of