QFont::toString() is not stable across Qt versions: Qt 6.11 switched to
a 19-field format carrying OpenType weights, which QFont::fromString()
of Qt 5.x and Qt <= 6.10 rejects, leaving a broken font. Projects saved
by a Qt 6.11+ build were therefore unreadable by older builds.
Add QETUtils::fontToString() composing the legacy 10/11-field
description (weight mapped back to the legacy scale with the same
closest-match table Qt uses when parsing) and use it at every site that
stores a font description in a project, element, table config or
settings file. Every Qt version from 5.15 through 6.12-beta parses this
form correctly, so files stay readable by every QET build in
circulation.
See issue #553.
Add a little function used to convert if needed the size of a font set
in dpi to pixel. Because the conversion from pdi to pixel can't
be exactly identical, the text size in the diagram can be a little
different, in the other side the switch between screens with different
dpi is no more a problem.
Add a combo box in the tool bar of diagram editor
to quickly change the size of the graphics handler item.
The sarto commit :D
NOTE
only available for diagram editor, element editor will
come later.
Dieter Mayer