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Workaround Qtbug regarding the QAbstractScrollArea::mouseMoveEvent(...) (06969f9d) is only needed until Qt 5.15.1 as it was fixed there.

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This commit is contained in:
Eugene Chornyi 2020-09-10 20:40:48 +02:00
parent 3e8a17f340
commit 46da0d9d4d
1 changed files with 5 additions and 2 deletions
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7
src/frontends/qt/GuiWorkArea.cpp
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@ -849,7 +849,8 @@ void GuiWorkArea::mouseReleaseEvent(QMouseEvent * e)
FuncRequest const cmd(LFUN_MOUSE_RELEASE, e->x(), e->y(),
q_button_state(e->button()), q_key_state(e->modifiers()));
#if (QT_VERSION > QT_VERSION_CHECK(5,10,1))
#if (QT_VERSION > QT_VERSION_CHECK(5,10,1) && \
QT_VERSION < QT_VERSION_CHECK(5,15,1))
d->synthetic_mouse_event_.cmd = cmd; // QtBug QAbstractScrollArea::mouseMoveEvent
#endif
d->dispatch(cmd);
@ -859,7 +860,8 @@ void GuiWorkArea::mouseReleaseEvent(QMouseEvent * e)
void GuiWorkArea::mouseMoveEvent(QMouseEvent * e)
{
#if (QT_VERSION > QT_VERSION_CHECK(5,10,1))
#if (QT_VERSION > QT_VERSION_CHECK(5,10,1) && \
QT_VERSION < QT_VERSION_CHECK(5,15,1))
// cancel the event if the coordinates didn't change, this is due to QtBug
// QAbstractScrollArea::mouseMoveEvent, the event is triggered falsely when quickly
// double tapping a touchpad. To test: try to select a word by quickly double tapping
@ -867,6 +869,7 @@ void GuiWorkArea::mouseMoveEvent(QMouseEvent * e)
// This bug does not occur on Qt versions 5.10.1 and below. Only Windows seems to be affected.
// ML thread: https://www.mail-archive.com/lyx-devel@lists.lyx.org/msg211699.html
// Qt bugtracker: https://bugreports.qt.io/browse/QTBUG-85431
// Bug was fixed in Qt 5.15.1
if (e->x() == d->synthetic_mouse_event_.cmd.x() && // QtBug QAbstractScrollArea::mouseMoveEvent
e->y() == d->synthetic_mouse_event_.cmd.y()) // QtBug QAbstractScrollArea::mouseMoveEvent
return; // QtBug QAbstractScrollArea::mouseMoveEvent