* Gui: Minor polishing of cursor regression fix
* TD: Buggy Wayland custom cursors workaround
Until Qt v6.6 displaying custom cursors on Wayland is broken,
so add a workaround. See also QTBUG-95434.
Fix is the same as 094c1b10 ("Gui: Buggy Wayland custom cursors workaround")
plus subsequent fixes.
* in QtConcurrent::run the order of 1st and 2nd argument are swapped
* QtConcurrent::run asserts that the argument of the passed function pointer is not non-const
* Used methods of QFontDatabase are static in Qt5 and Qt6
* QTextStream::setCodec() has been removed in Qt6
* Argument of enterEvent() has changed from QEvent to QEnterEvent
* QTextCharFormat::setFamily() is deprecated
Evaluation of the XQuery has a complexity of more than O(3), as the
underlying QDomNodeModel::compareOrder is quite expensive.
Traversing the DOM tree directly is significantly faster, i.e. it now
takes constantly less time than the actual drawing via QPainter, while
previously it could take several magnitudes more time.
Fixes#6638
Also replace the XQuery used for reparenting the drawing group. Not
performance critical, but significantly simpler code.
Layers are Inkscape way of marking top level groups. Inkscape provides
convenient UI to show and hide these groups as well as to lock them to
prevent users from accidentally editing them. Although Inkscape can open
and edit files without layers (without any top level group having the
groupmode attribute set to "layer"), it is somewhat cumbersome to move
the group created by TechDraw to a separate layer, which is what I do,
when I want to add more layers with additional information.
Signed-off-by: Łukasz Stelmach <stlman@poczta.fm>
also fix issue that tolerance could be set despite theoretically exact is true under some circumstances
also some wording improvements
also a minor fix to use 0.0 instead of DBL_MIN
'QString& QString::vsprintf(const char*, __va_list_tag*)' is deprecated: Use vasprintf(), arg() or QTextStream instead [-Wdeprecated-declarations]
'QString& QString::sprintf(const char*, ...)' is deprecated: Use asprintf(), arg() or QTextStream instead [-Wdeprecated-declarations]
