Implement different zoom levels for dive photos tab

This implements different zoom levels for the dive photos tab as
suggested by Stefan Fuchs <sfuchs@gmx.de> in #898.
The zoom level can be changed using a slider or CTRL+mousewheel.
Zoom levels range from a third of the standard thumbnail size to
thrice the standard thumbnail size.

Thumbnails are cached in maximum resolution and scaled down on
the fly. Because the profile widget took its pictures from the
photo list model, an extra picture copy with a fixed size had
to be introduced.

The UI is still a bit crude.

Reported-by: Stefan Fuchs <sfuchs@gmx.de>
Signed-off-by: Berthold Stoeger <bstoeger@mail.tuwien.ac.at>
This commit is contained in:
Berthold Stoeger 2017-12-17 16:17:38 +01:00 committed by Dirk Hohndel
parent 0d01c70f3a
commit 05a1626c7e
8 changed files with 120 additions and 17 deletions

View file

@ -2007,7 +2007,7 @@ void ProfileWidget2::plotPictures()
if (!offsetSeconds)
continue;
DivePictureItem *item = new DivePictureItem();
item->setPixmap(m->index(i, 0).data(Qt::DecorationRole).value<QPixmap>());
item->setPixmap(m->index(i, 0).data(Qt::UserRole).value<QPixmap>());
item->setFileUrl(m->index(i, 1).data().toString());
// let's put the picture at the correct time, but at a fixed "depth" on the profile
// not sure this is ideal, but it seems to look right.