The size of the to-be-created thumbnails was passed from DivePictureModel
to Thumbnailer. This became more and more bothersome, because the size
had to be stored with the request. Calling from Thumbnailer into
DivePictureModel was not an option, since this is not linked to all tests.
Therefore, move these functions to the Thumbnailer class.
Since the maximum thumbnail size is now known to the thumbnailer, the
dummy and failure images can be precalculated, which makes switching
between dives faster.
Signed-off-by: Berthold Stoeger <bstoeger@mail.tuwien.ac.at>
Connect the thumbnailer signal to the dive picture model slot.
This needs some code-reshuffling in the dive picture model.
Signed-off-by: Berthold Stoeger <bstoeger@mail.tuwien.ac.at>
Create a new class, which performs all thumbnailing code.
This is mostly code reshuffling. Thumbnails are extracted
either from a cache or thumbnail calculation is started in
a worker thread.
Since getHashedImage() is called from a worker thread it
makes no sense to call subfunctions in yet another worker
thread. Remove these calls.
In contrast to the previous code, on error the background
thread produces a failure image, but it is not yet shown.
Signed-off-by: Berthold Stoeger <bstoeger@mail.tuwien.ac.at>
In imagedownloader.cpp the only thing we need from the picture struct
is the filename. Therefore, use QStrings instead of the picture struct.
This simplifies memory management.
Remove the clone_picture() function, which is not needed anymore.
Signed-off-by: Berthold Stoeger <bstoeger@mail.tuwien.ac.at>
SHashedImage was a subclass of QImage, which fetched the image according
to the filename hashes. Turn this into a function, as this is much more
idiomatic and flexible.
Signed-off-by: Berthold Stoeger <bstoeger@mail.tuwien.ac.at>
The old code loaded all thumbnails into memory at once. This does
not scale to logs with thousands of pictures. Therefore, save
the pictures to individual files and only load the currently
needed pictures.
Currently, this will make changing switching between dives slower,
because the thumbnails are loaded from disk. In the future, it
is planned to do this in a background thread without blocking
the user interface.
A notable difference to the old code: Thumbnails are now indexed
by the image-hash (i.e. the content of the raw image) and not
by the filename of the image. Thus, different paths to the same
image should only be saved once.
Signed-off-by: Berthold Stoeger <bstoeger@mail.tuwien.ac.at>
To potentially conserve memory, don't keep copies of scaled thumbnails.
Scale the thumbnails on demand.
Signed-off-by: Berthold Stoeger <bstoeger@mail.tuwien.ac.at>
To ease trouble-shooting of the picture thumbnailer add a number
of debug- and info-messages.
Signed-off-by: Berthold Stoeger <bstoeger@mail.tuwien.ac.at>
Signed-off-by: Lubomir I. Ivanov <neolit123@gmail.com>
Replace constructs of the kind
s.toUtf8().data(),
s.toUtf8().constData(),
s.toLocal8Bit().data(),
s.toLocal8Bit.constData() or
qUtf8Printable(s)
by
qPrintable(s).
This is concise, consistent and - in principle - more performant than
the .data() versions.
Sadly, owing to a suboptimal implementation, qPrintable(s) currently
is a pessimization compared to s.toUtf8().data(). A fix is scheduled for
new Qt versions: https://codereview.qt-project.org/#/c/221331/
Signed-off-by: Berthold Stoeger <bstoeger@mail.tuwien.ac.at>
Found while compiled against Qt 5.10 build from source. The assert
Q_ASSERT(last >= first) is trapped by this beginInsertRows in
case there are no pictures. Just do not call this when there are
no pictures.
Signed-off-by: Jan Mulder <jlmulder@xs4all.nl>
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>
Correct way of using indices for rowDDstart and rowDDend.
Reset rowDDstart and rowDDend at beginning of updating dive pictures.
Signed-off-by: Stefan Fuchs <sfuchs@gmx.de>
In the dive picture tab show pictures of all selected dive.
But at the same moment take care that in the profile only
pictures from displayed_dive are displayed.
Signed-off-by: Stefan Fuchs <sfuchs@gmx.de>
The thumbnailing in qt-models/divepicturemodel.cpp was performed
concurrently, but the thumbnailCache was not protected from races.
Resolve this by guarding the thumbnalCache accesses with mutexes.
Signed-off-by: Berthold Stoeger <bstoeger@mail.tuwien.ac.at>
The code of DivePictureModel used a QHash to keep track of thumbnails.
Not only was the code rather complex - it also had the consequence that
pictures are sorted according to the hash function, i.e. seemingly
random.
This commit replaces the QHash by a simple QList which keeps track
of thumbnails and some meta-data.
Signed-off-by: Berthold Stoeger <bstoeger@mail.tuwien.ac.at>
Note that constructs like QList<QFuture<void>> is incompatible with
pre-C++11 compilers. But the code base is so full of C++11isms that
we may just as well remove asymmetric eye-sores of the kind
"QList<QFuture<void> >".
Signed-off-by: Berthold Stoeger <bstoeger@mail.tuwien.ac.at>
Having subsurface-core as a directory name really messes with
autocomplete and is obviously redundant. Simmilarly, qt-mobile caused an
autocomplete conflict and also was inconsistent with the desktop-widget
name for the directory containing the "other" UI.
And while cleaning up the resulting change in the path name for include
files, I decided to clean up those even more to make them consistent
overall.
This could have been handled in more commits, but since this requires a
make clean before the build, it seemed more sensible to do it all in one.
Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
This drastically improves the time it takes to select a dive
with several pictures at the expense of longer startup and
bigger hash files.
Signed-off-by: Robert C. Helling <helling@atdotde.de>
Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
This required a bit more untangling, but with this it seems we can build
subsurface-mobile again (at least on the desktop).
Interesting is the removal from inside the ImageDownloader of the call to
DivePictureModel::instance()->updateDivePictures() - which actually could
cause some interesting recursion issues. If it turns out we did indeed
need this, it needs to be re-architected.
Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
Altering DivePicture model to allow deleting images
from the QListView without immediate updating of the
list. Updating is determined by an additioanl parameter
Signed-off-by: Guido Lerch <guido.lerch@gmail.com>
Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
This model should be used inside the Edit Dive Site mode.
It should display all photos from all dives that are part
of this dive site, ignoring trips.
Signed-off-by: Tomaz Canabrava <tomaz.canabrava@gmail.com>
Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
This class will surely be used on the mobile version, and it was very
tangled inside divepicturewidget.
Signed-off-by: Tomaz Canabrava <tomaz.canabrava@intel.com>
Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
