When a Wikipedia article is already cached, this change reduces the
amount of sent and received network data almost tenfold.
Setting up a network disk cache in the same way for dictNetMgr does not
noticeably impact the amount of network traffic. Either this network
access manager sends and receives very little data or the data is never
the same. So dictNetMgr does not need a disk cache.
Use QNetworkDiskCache's default maximum size of 50 MiB as the default
network cache size. This size is large enough to accommodate tens of
huge MediaWiki articles. It is also small enough that the user is
unlikely to run out of disk space because of the cache.
Clear network cache on exit by default because most users probably
don't load the same online articles after restarting GoldenDict. Plus
storing the network cache on disk indefinitely by default would be a new
and unexpected to the users privacy risk.
Nikita Moor came up with the idea and wrote an initial network disk
cache implementation in #1310.
For example, looking up "United States" in my local dictionaries, then
pressing Ctrl++ to increase zoom factor from 1 to 5 takes 4 seconds with
this change and 25 seconds without it. The same scaling takes 6 seconds
with this change and 45 seconds without when I enable English Wikipedia,
which has a particularly large "United States" article.
There is a workaround that speeds up zooming: look up a nonexistent
word, scale to the desired level, then go back to the large articles.
But this is tedious if large articles are open in scan popup or
in case of many tabs in the main window.
* #undef Bool with Qt4 as well as with Qt5.
* #undef min, #undef max from <X11/Xlibint.h>.
* #include <fixx11h.h> just after hotkeywrapper.hh. Unfortunately this
header can not be included in hotkeywrapper.hh directly because
some of the undef-ed words are actually used in hotkeywrapper.cc.
* #include <fixx11h.h> after <X11/Xlib.h> in mainwindow.cc just in case
hotkeywrapper.hh stops including this Xlib.h header in the future.
These changes should make future compilation errors less likely.
For example, without "#undef min" in hotkeywrapper.hh, including
<iomanip> in mainwindow.cc after the mainwindow.hh include resulted in
the following GCC 8 compilation error:
/usr/include/c++/8.2.1/bits/locale_facets_nonio.tcc:945:22:
error: expected unqualified-id before ‘(’ token
__minlen = std::min(__minlen,
^~~
* add a new interface class AudioPlayerInterface;
* inherit a new proxy class Ffmpeg::AudioPlayer from it;
* partially switch ArlticleView to using the interface;
* expose MainWindow's AudioPlayerInterface instance to all ArticleView
instances;
* add a new AudioPlayerFactory class responsible for creating instances
of concrete classes derived from AudioPlayerInterface depending on
relevant Config::Preferences values;
* increase minimum supported Qt version from 4.5 to 4.6 in README
in order to use QScopedPointer introduced in Qt 4.6.
This forces the jump even when the dictionary is already a current/active dictionary.
This is convenient for the following use-cases:
1. User manually scrolls far away from the current dictionary and would like to return.
2. User jumps far away from the current dictionary when doing search (Ctrl+F).
3. User scrolls a huge article and would like to get back to the beginning of it.
