This patch adds NotificationServer, which runs as the "notify" user
and provides an IPC API for desktop notifications.
LibGUI gains the GUI::Notification class for showing notifications.
NotificationServer is spawned on demand and will unspawn after
dimissing all visible notifications. :^)
Finally, this also comes with a small /bin/notify utility.
You can now #include <AK/Forward.h> to get most of the AK types as
forward declarations.
Header dependency explosion is one of the main contributors to compile
times at the moment, so this is a step towards smaller include graphs.
You can now drop things on an AbstractView, which will ask its model if
the drag is acceptable to drop at the index where it's dropped.
If it's accepted by the model, the view will fire the on_drop hook.
This allows windows/widgets to learn when something is being dragged
over them. They can then repaint themselves somehow to indicate that
they are willing to accept a drop.
Currently this is piggybacking somewhat on the mouse event mechanism
in WindowServer. I'm not sure that's the best design but it seemed
easier to do it this way right now.
If the cursor left a table view column header while also pressing it,
we would keep the header highlighted. This was not consistent with how
regular buttons behaved.
Since space is divided evenly between widgets with SizePolicy::Fill,
we were sometimes ending up with a couple of unused pixels after the
last widget (due to rounding.)
Fix this by always giving the slack pixels at the end to the very last
auto-sized widget in the layout.
This fixes an issue where it was sometimes possible to click on an
"unreachable" part of a Splitter widget. :^)
We were previously cheating by setting the entire splitter's background
color to the hover highlight color. This looked goofy whenever there
were transparent widgets inside a splitter, since the highlighted color
would shine through when hovering.
This was especially noticeable in SystemMonitor, which now looks much
better. :^)
This patch introduces the GUI::SyntaxHighlighter class, which can be
attached to a GUI::TextEditor to provide syntax highlighting.
The C++ syntax highlighting from HackStudio becomes a new class called
GUI::CppSyntaxHighlighter. This will make it possible to get C++ syntax
highlighting in any app that uses a GUI::TextEditor. :^)
Sidenote: It does feel a bit weird having a C++ lexer in a GUI toolkit
library, and we'll probably end up moving this out to a separate place
as this functionality grows larger.
