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2018-07-09Dive pictures: differentiate between IO-error and unknown formatGravatar Berthold Stoeger
Show different images for IO-error and unknow file format. Use file-extensions to recognize video files if we couldn't parse them. Signed-off-by: Berthold Stoeger <bstoeger@mail.tuwien.ac.at>
2018-07-08Dive pictures: detach ProfileWidget2 from DivePictureModelGravatar Berthold Stoeger
As long as ProfileWidget2 and DivePictureModel showed the same set of pictures and any change would lead to a full recalculation of the set, it made sense to let ProfileWidget2 use DivePictureModel's data. Recently, keeping the two lists in sync become more and more of a burden. Therefore, disconnect ProfileWidget2 and DivePictureModel. This will lead to some code-duplication and perhaps a temporary drop in UI-performance, but in the end the code is distinctly simpler and also more flexible. Thus, for example the DivePhotoTab could be changed to support headings without having to touch ProfileWidget2 at all. Signed-off-by: Berthold Stoeger <bstoeger@mail.tuwien.ac.at>
2018-07-08Dive pictures: Recognize video filesGravatar Berthold Stoeger
When generating thumbnails, test for video files. If it is, use a dummy-thumbnail. Write only the type (video), but no image to the thumbnail cache, for forward-compatibility. Signed-off-by: Berthold Stoeger <bstoeger@mail.tuwien.ac.at>
2018-07-04Dive pictures: remove hashesGravatar Berthold Stoeger
In the last commits, the canonical-to-local filename map was made independent from the image hashes and the location of moved images was based on filename not hashes. The hashes are now in principle unused (except for conversion of old-style local filename lookups). Therefore, remove the hashes in this commit. This makes addition of images distinctly faster. Signed-off-by: Berthold Stoeger <bstoeger@mail.tuwien.ac.at>
2018-07-04Dive pictures: index local file name by canonical filnameGravatar Berthold Stoeger
The connection canonical filename to local filename was done via two maps: 1) canonical filename -> hash 2) hash -> local filename But the local filename was always queried from the canonical filename. Therefore, directly index the former with the latter. On startup, convert the old map to the new one. Signed-off-by: Berthold Stoeger <bstoeger@mail.tuwien.ac.at>
2018-06-28Dive pictures: render icons with white instead of transparent backgroundGravatar Berthold Stoeger
The SVG icons for failed / still-loading pictures were rendered with an alpha channel. This lead to strange behavior when hovering over the icon in the profile plot: When hitting a "hole" the icon would be minimized again. Therefore, render the SVGs onto a white background. Signed-off-by: Berthold Stoeger <bstoeger@mail.tuwien.ac.at>
2018-06-22Dive pictures: fix loading of remote images without local versionGravatar Berthold Stoeger
Owing to the recent churn in imagedownloader.cpp, some of the code was bogus. Notably, in f60343eebbf6a31a4643dde9f4454f6ce84f61d3 the code was changed such that always the local filename was used to access the images. Yet, the old code remained, which after failure tried again to access the local picture. This second access can obviously be removed completely. More seriously, after failing to load the local version, no attempt was made to fetch the image via canonical filename. This could produce the following sequence of events: - Import remote image - Delete thumbnail and local cache of image - Image loading would fail Therefore, first try to load using local file-location. If that fails, load using the canonical file-location. To do so, split the file-access code in two functions. The code should now be distinctly easier to follow. Signed-off-by: Berthold Stoeger <bstoeger@mail.tuwien.ac.at>
2018-06-13Dive pictures: Make failure of loading images less noisyGravatar Berthold Stoeger
For debug reasons, failure to load the original image was spilled to the console, even if the local file was then found. Only print a message, when also the local image failed loading. This needed a bit of code reshuffling. To know when to print a failed-loading message, the URL is now checked at the Thumbnailer level, not the ImageDownloader level. The ImageDownloader is passed the URL and the original filename (if different). The image is loaded from the URL, but the signals send the original filename, so that the thumbnail can be associated to the proper image. Signed-off-by: Berthold Stoeger <bstoeger@mail.tuwien.ac.at>
2018-05-27Dive pictures: automatically recalculate thumbnailsGravatar Berthold Stoeger
If a thumbnail and the original picture can be accessed and the modification date of the thumbnail is before the modification date of the picture, recalculate the thumbnail. This causes more disk access and might give strange effects for picture files with messed up file timestamps (i.e. lying in the future) or messed up computer clocks (i.e. running in the past). Therefore, add a preference option to disable the new behavior. Default is set to enabled. Signed-off-by: Berthold Stoeger <bstoeger@mail.tuwien.ac.at>
2018-05-27Dive pictures: give user option to recalculate thumbnailsGravatar Berthold Stoeger
Even though hashes of image contents are calculated, the hashes are not compared to actual file contents in routine-operation. Therefore give the user the option to recalculate thumbnails, should they have edited the picture. Signed-off-by: Berthold Stoeger <bstoeger@mail.tuwien.ac.at>
2018-05-26Dive pictures: Derive thumbnail file from picture filenameGravatar Berthold Stoeger
Since commit 6618c9ebfc6a7cebbef687fcb3aa74c70f504ff2, thumbnails are saved in individual files. The filename was simply the picture-hash. In a mailing-list discussion it turned out that in the future we might not hash images or change the hash. Therefore, derive the thumbnail filename from the image filename, using the SHA1 algorithm. Signed-off-by: Berthold Stoeger <bstoeger@mail.tuwien.ac.at>
2018-05-26Cleanup: remove code related to pictures in the cloud-repositoryGravatar Berthold Stoeger
Storing pictures in the cloud never came to be, so remove the code. Signed-off-by: Berthold Stoeger <bstoeger@mail.tuwien.ac.at>
2018-05-16Dive pictures: don't attempt reading the same image twiceGravatar Berthold Stoeger
If loading of an image failed, we tried to see if we find a canonical filename in the cache. There's no point in rereading the picture if the canonical and the original filename are the same. Signed-off-by: Berthold Stoeger <bstoeger@mail.tuwien.ac.at>
2018-05-16Dive pictures: Don't enter infinity loop on invalid picturesGravatar Berthold Stoeger
The recently committed refactoring of the dive-picture code introduced a severe bug: If an image couldn't be loaded from disk owing to an invalid file, the filename was interpreted as an url and loaded in the background. This succeeded, because the file actually exists. After download, the file would then still be invalid and the whole thing restarted, leading to an infinity loop. To fix this, do two things: 1) Don't even try to download local files. 2) If interpreting a downloaded file fails, don't try the downloading business again. Signed-off-by: Berthold Stoeger <bstoeger@mail.tuwien.ac.at>
2018-05-13Dive pictures: refactor image downloaderGravatar Berthold Stoeger
Instead of generating one ImageDownloader object per image to be downloaded and running every image download in a separate worker thread, use one global ImageDownloader object owned by the UI thread. The images are downloaded using event based IO (as probably was the intention of the QNetworkManager class). User-visible change: after download from the internet, the thumbnail is shown without having to change dives. Signed-off-by: Berthold Stoeger <bstoeger@mail.tuwien.ac.at>
2018-05-13Dive pictures: Import camera iconGravatar Berthold Stoeger
Import a camera icon from the KDE breeze theme, which is licensed under the LGPL. Use this icon to display not-yet-loaded images in the photos tab and the profile. Source: https://github.com/KDE/breeze-icons Signed-off-by: Berthold Stoeger <bstoeger@mail.tuwien.ac.at>
2018-05-13Dive pictures: Move thumbnail-size to Thumbnailer classGravatar Berthold Stoeger
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>
2018-05-13Dive pictures: Introduce thumbnailer classGravatar Berthold Stoeger
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>
2018-05-13Dive pictures: replace picture struct by QStringGravatar Berthold Stoeger
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>
2018-05-13Dive pictures: turn SHashedImage class into getHashedImage() functionGravatar Berthold Stoeger
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>
2018-04-01Debug: Error reporting for SHashedImage loadingGravatar Berthold Stoeger
Overwrite QImage::load() in SHashedImage so that we can perform better error reporting. Signed-off-by: Berthold Stoeger <bstoeger@mail.tuwien.ac.at>
2018-04-01Debug: sprinkle debug messages in thumbnailing codeGravatar Berthold Stoeger
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>
2018-03-05Cleanup: Remove hash field from picture-structureGravatar Berthold Stoeger
The hash field in the picture-structure was in principle non-operational. It was set on loading, but never actually changed. The authoritative hash comes from the filename->hash map. Therefore, make this explicit by removing the hash field from the picture structure. Instead of filling the picture structure on loading, add the hash directly to the filename->hash map. This is done in the register_hash() function, which does not overwrite old entries. I.e. the local hash has priority over the save-file. This policy might be refined in the future. Signed-off-by: Berthold Stoeger <bstoeger@mail.tuwien.ac.at>
2018-03-05Cleanup: Fold add_hash() call into learnHash() functionGravatar Berthold Stoeger
learnHash() was always called in conjunction with add_hash(). The pattern was that a local filename and a hash were connected in the hash-to-filename and the filename-to-hash maps. Then, the original picture-filename or url were registered in the filename-to-hash map. This commit changes learnHash() to take three parameters (original-filename, local-filename and hash) and do all of the above. The new code is simpler because no dummy picture struct has to be generated in DiveListView::loadImageFromURL(). The tests were extended to check for all hash<->filename associations. Signed-off-by: Berthold Stoeger <bstoeger@mail.tuwien.ac.at>
2018-03-05Cleanup: remove updateHash() functionGravatar Berthold Stoeger
updateHash() and hashPicture() did the same thing, with the exception that hashPicture() marked the dive list as changed if a hash changed. This seems like a good idea in any case, therefore always use hashPicture(). Signed-off-by: Berthold Stoeger <bstoeger@mail.tuwien.ac.at>
2018-03-05core/imagedownloader.cpp: Use signal to exit eventloopGravatar Berthold Stoeger
Don't do busy-waiting. Signed-off-by: Berthold Stoeger <bstoeger@mail.tuwien.ac.at>
2018-03-05core/imagedownloader.cpp: Use implicit default constructor of QImageGravatar Berthold Stoeger
No point in move-constructing from a different default constructed QImage. Signed-off-by: Berthold Stoeger <bstoeger@mail.tuwien.ac.at>
2018-03-05core/imagedownloader.cpp: remove recursionGravatar Berthold Stoeger
If loading from hash failed in the saveImage() slot(!) it would recurse into loadFromUrl(), which would generate a new network reply. Very scary and a (small) wonder that it worked. Let's try to make this all more explicit. Signed-off-by: Berthold Stoeger <bstoeger@mail.tuwien.ac.at>
2018-03-05core/imagedownloader.cpp: Make the manager object local to load()Gravatar Berthold Stoeger
The QNetworkAccessManager is only used in the load() function. No point in it being a subobject. Signed-off-by: Berthold Stoeger <bstoeger@mail.tuwien.ac.at>
2018-03-05core/imagedownloader.cpp: Simplify deletion of objectsGravatar Berthold Stoeger
1) Destroying the QNetworkManager seems like a bug: this was a subobject of ImageDonwloader. It's mysterious how this didn't crash. 2) Instead of calling deleteLater() on the reply object, simply delete it after completion. Signed-off-by: Berthold Stoeger <bstoeger@mail.tuwien.ac.at>
2018-03-05core/imagedownloader.cpp: Fix memory leakGravatar Berthold Stoeger
A cloned picture struct would not be freed if the filename was already in the queued-for-download set. Signed-off-by: Berthold Stoeger <bstoeger@mail.tuwien.ac.at>
2018-02-07Cleanup: unserialize loading of picturesGravatar Berthold Stoeger
The images to load are kept in a set to avoid multiple loading of the same picture. The set was protected with a mutex. Problem: the mutex was not released before loading the picture, effectively serializing the loading of pictures. Therefore unlock the mutex once the set is updated. Signed-off-by: Berthold Stoeger <bstoeger@mail.tuwien.ac.at>
2018-02-07Cleanup: Make local helpers and variables of static linkageGravatar Berthold Stoeger
In core/imagedownloader.cpp the helpers cloudImageUrl() and loadPicture() are made of static linkage. The global variables queuedPictures and pictureQueueMutex were moved into the loadPicture() function, because they are used only there. Signed-off-by: Berthold Stoeger <bstoeger@mail.tuwien.ac.at>
2017-12-29cleanup: Uninitialized scalar fieldGravatar Jan Mulder
CID 208303 Signed-off-by: Jan Mulder <jlmulder@xs4all.nl>
2017-04-29Add SPDX header to remaining core filesGravatar Dirk Hohndel
Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
2016-12-30Fix picture hashing logic for pictures on the web.Gravatar Robert C. Helling
Signed-off-by: Robert C. Helling <helling@atdotde.de>
2016-04-30Only attempt to download each picture onceGravatar Robert C. Helling
Otherwise we keep downloading the same image multiple times instead of new images. Signed-off-by: Robert C. Helling <helling@atdotde.de> Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
2016-04-29Protect access to image hash dictionaries with lockGravatar Robert C. Helling
Otherwise we step on our own feet when downloading several images, like after import from divelogs.de with many linked images. Signed-off-by: Robert C. Helling <helling@atdotde.de> Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
2016-04-04Move subsurface-core to core and qt-mobile to mobile-widgetsGravatar Dirk Hohndel
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>