tdf#165238 qt: Rely on Qt for "text/plain" and UTF-8 clipboard text

QMimeData::text implements handling for the
"text/plain;charset=utf-8" and "text/plain" MIME types
(see [1]).

Rely on that instead of implementing our own handling for
these MIME types.

This fixes copying Greek characters from Firefox as plain
text into Writer with qt6 on Wayland (tdf#165238).

This approach was already mentioned as an idea in

commit 5b3227fac58dcbd588e2389e205679cd77842bac
Author: Michael Weghorn <m.weghorn@posteo.de>
Date:   Wed Apr 6 13:51:59 2022 +0200

tdf#147285 qt: Prefer "text/plain;charset=utf-8" over "text/plain"

> (An alternative solution to adding our own handling for
> "text/plain;charset=utf-8" and making assumptions for the
> encoding of "text/plain" data would be to let Qt handle
> this and just call `QMimeData::text()` for the
> `m_bProvideUTF16FromOtherEncoding=true` case
> in `QtTransferable::getTransferData`.
> Since qtbase commit 589a01ff6b1eacf81e74a5fc4801572135214f43
> ("QMimeData: Prefer UTF-8 when multiple charsets are available",
> contained in Qt >= 5.13), that one handles MIME type
> "text/plain;charset=utf-8" in addition to "text/plain".)

[1] https://code.qt.io/cgit/qt/qtbase.git/tree/src/corelib/kernel/qmimedata.cpp?id=6c61d7b0f804ae5c048af95abef4d41ecc8862df#n383

Change-Id: Iee695f62e836f3a8776b719ca95afb8fbddea82f
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/181660
Tested-by: Jenkins
Reviewed-by: Michael Weghorn <m.weghorn@posteo.de>

0 files changed, 0 insertions, 0 deletions