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WindowServer now tracks whether windows are occluded (meaning that
they are completely covered by one or more opaque windows sitting above
them.) This state is communicated to the windows via WindowStateChanged
messages, which then allow GWindow to mark its backing store volatile.
This reduces the effective memory impact of windows that are not at all
visible to the user. Very cool. :^)
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WindowServer will now send out a WindowStateChanged message to clients
when one of their windows is minimized.
This is then forwarded to the GWindow, which will try to mark its
underlying window backing store as volatile.
This allows the kernel to steal the memory used by minimized windows
in case it starts running low. Very cool! :^)
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This allows the very aesthetic "Hotdog Stand" theme to have quite
reasonable looking menus.
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Use a pthread_cond_t to have the ASMixer thread wait until a client has
connected and added a buffer queue to the "pending mixing" vector.
This solves the long-standing issue of the system "idling" at ~8% CPU.
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Instead of directly manipulating LDFLAGS, set LIB_DEPS in each
subdirectory Makefile listing the libraries needed for
building/linking such as "LIB_DEPS = Core GUI Draw IPC Core".
This adds each library as an -L and -l argument in LDFLAGS, but
also adds the library.a file as a link dependency on the current
$(PROGRAM). This causes the given library to be (re)built before
linking the current $(PROGRAM), but will also re-link any binaries
depending on that library when it is modified, when running make
from the root directory.
Also turn generator tools like IPCCompiler into dependencies on the
files they generate, so they are built on-demand when a particular
directory needs them.
This all allows the root Makefile to just list directories and not
care about the order, as all of the dependency tracking will figure
it out.
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GApplication now has a palette. This palette contains all the system
theme colors by default, and is inherited by a new top-level GWidget.
New child widgets inherit their parents palette.
It is possible to override the GApplication palette, and the palette
of any GWidget.
The Palette object contains a bunch of colors, each corresponding to
a ColorRole. Each role has a convenience getter as well.
Each GWidget now has a background_role() and foreground_role(), which
are then looked up in their current palette when painting. This means
that you no longer alter the background color of a widget by setting
it directly, rather you alter either its background role, or the
widget's palette.
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These are now separate from the Window and WindowText colors.
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Color themes are loaded from .ini files in /res/themes/
The theme can be switched from the "Themes" section in the system menu.
The basic mechanism is that WindowServer broadcasts a SharedBuffer with
all of the color values of the current theme. Clients receive this with
the response to their initial WindowServer::Greet handshake.
When the theme is changed, WindowServer tells everyone by sending out
an UpdateSystemTheme message with a new SharedBuffer to use.
This does feel somewhat bloated somehow, but I'm sure we can iterate on
it over time and improve things.
To get one of the theme colors, use the Color(SystemColor) constructor:
painter.fill_rect(rect, SystemColor::HoverHighlight);
Some things don't work 100% right without a reboot. Specifically, when
constructing a GWidget, it will set its own background and foreground
colors based on the current SystemColor::Window and SystemColor::Text.
The widget is then stuck with these values, and they don't update on
system theme change, only on app restart.
All in all though, this is pretty cool. Merry Christmas! :^)
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We were pumping the sound device full of silence even after the last
audio client disconnected.
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Allow everything to be built from the top level directory with just
'make', cleaned with 'make clean', and installed with 'make
install'. Also support these in any particular subdirectory.
Specifying 'make VERBOSE=1' will print each ld/g++/etc. command as
it runs.
Kernel and early host tools (IPCCompiler, etc.) are built as
object.host.o so that they don't conflict with other things built
with the cross-compiler.
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When we're in a drag, we're no longer concerned with streaming mouse
events to the window that initiated the drag, so just clear the active
input window pointer.
This fixes an issue where you'd have to click once after drag and drop
in order to "release" the mouse from the active input window.
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These fields are intended to carry the real meat of a drag operation,
and the "text" is just for what we show on screen (alongside the cursor
during the actual drag.)
The data field is just a String for now, but in the future we should
make it something more flexible.
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This is no longer necessary, since the audio applet has been moved to
its own process.
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This patch introduces the second MenuApplet: Audio. To make this work,
menu applet windows now also receive mouse events.
There's still some problem with mute/unmute via clicking not actually
working, but the call goes from the applet program over IPC to the
AudioServer, where something goes wrong with the state change message.
Need to look at that separately.
Anyways, it's pretty cool to have more applets running in their own
separate processes. :^)
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Instead of implementing menu applets as their own thing, they are now
WSWindows of WSWindowType::MenuApplet.
This makes it much easier to work with them on the client side, since
you can just create a GWindow with the right type and you're in the
menubar doing applet stuff :^)
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Using int was a mistake. This patch changes String, StringImpl,
StringView and StringBuilder to use size_t instead of int for lengths.
Obviously a lot of code needs to change as a result of this.
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Windows that are being moved around by the user are now called "moving"
windows instead of "dragging" windows, to avoid confusion with the
drag and drop stuff.
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This bitmap is displayed alongside the dragged text underneath the
mouse cursor while dragging.
This will be a perfect fit for dragging e.g files around. :^)
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This patch enables basic drag&drop between applications.
You initiate a drag by creating a GDragOperation object and calling
exec() on it. This creates a nested event loop in the calling program
that only returns once the drag operation has ended.
On the receiving side, you get a call to GWidget::drop_event() with
a GDropEvent containing information about the dropped data.
The only data passed right now is a piece of text that's also used
to visually indicate that a drag is happening (by showing the text in
a little box that follows the mouse cursor around.)
There are things to fix here, but we're off to a nice start. :^)
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Instead of passing the PIDs back and forth in a handshake "Greet"
message, just use getsockopt(SO_PEERCRED) on both sides to get the same
information from the kernel.
This is a nice little simplification of the IPC protocol, although it
does not get rid of the handshake since we still have to pass the
"client ID" from the server to each client so they know how to refer
to themselves. This might not be necessary and we might be able to get
rid of this later on.
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Currently menu applets are laid out relative to the "audio rect" which
is the rect of the little audio muted state icon thingy.
There was an issue where applets would be placed at a negative X coord
if they were added to the WindowServer before the first time drawing
the menubar.
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We'll still have a CPU graph, just not in the WindowServer process.
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It's now possible to create a little applet window that sits inside the
system's menubar. This is done using the new CreateMenuApplet IPC call.
So far, it's possible to assign a backing store ID, and to invalidate
rects for repaint. There is no way to get the events from inside the
applet just yet.
This will allow us to move the CPU graph and audio thingy to separate
applet processes. :^)
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Move this from WSCompositor::compose() to a separate run_animations()
function to keep compose() readable. We might want to add some more
animations later.
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We now show a quick window outline animation when going in/out of
minimized state. It's a simple 10 frame animation at 60fps, just to
give a visual cue of what's happening with the window.
The Taskbar sends over the corresponding button rect for each window
to the WindowServer using a new WM_SetWindowTaskbarRect message.
Note that when unminimizing, we still *show* the window right away,
and don't hold off until the animation has finished. This avoids
making the desktop feel slow/sluggish. :^)
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If a client sends an invalid window ID or similar to the WindowServer,
we'll now immediately mark them as misbehaving and disconnect them.
This might be too aggressive in some cases (window management, ...)
but it's just a place to start.
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This matches what we're already calling the server-side subclasses
better, though we'll probably want to find some better names for the
client-side classes eventually.
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Move over the CoreIPC::Server and CoreIPC::Client namespace stuff
into LibIPC where it will soon becomes LibIPC-style things.
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This patch introduces code generation for the WindowServer IPC with
its clients. The client/server endpoints are defined by the two .ipc
files in Servers/WindowServer/: WindowServer.ipc and WindowClient.ipc
It now becomes significantly easier to add features and capabilities
to WindowServer since you don't have to know nearly as much about all
the intricate paths that IPC messages take between LibGUI and WSWindow.
The new system also uses significantly less IPC bandwidth since we're
now doing packed serialization instead of passing fixed-sized structs
of ~600 bytes for each message.
Some repaint coalescing optimizations are lost in this conversion and
we'll need to look at how to implement those in the new world.
The old CoreIPC::Client::Connection and CoreIPC::Server::Connection
classes are removed by this patch and replaced by use of ConnectionNG,
which will be renamed eventually.
Goodbye, old WindowServer IPC. You served us well :^)
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The CNetworkJob::on_finish hook will be invoked both for success and
failure, but there will only be a m_job->response() in the success case
so we have to null-check it before using it.
This should have been obvious from the "->"
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Previously it was not possible to see what each thread in a process was
up to, or how much CPU it was consuming. This patch fixes that.
SystemMonitor and "top" now show threads instead of just processes.
"ps" is gonna need some more fixing, but it at least builds for now.
Fixes #66.
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For services explicitly configured as lazy, SystemServer will now listen
on the socket and only spawn the service once a client attempts to connect
to the socket.
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SystemServer can now create sockets on behalf of services before spawning any
of them, and pass the open socket fd as fd 3. CLocalServer gains a method to
complete the takeover and listen on the passed fd.
This is not used by any services at the moment.
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When reaping a child, SystemServer will now match up child's pid with its own
record of the services, and respawn the service if keepalive is enabled for it.
For example, we want to restart the WindowServer if it crashes, but we wouldn't
want to restart the Terminal if it gets closed.
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This replaces the hardcoded services list with a very simple config
file in /etc/SystemServer.ini :^)
Closes https://github.com/SerenityOS/serenity/issues/610
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