With the change of "gui_session: provide mode info as XML", the
client-side window-close handling became dysfunct because the
window-close state got wrongly interpreted as initial window state, to
the effect that a client's initial-window size policy got applied
instead of closing the window.
This patch makes the inital state of running a windowed application
(when no window size is defined yet) clearly distiguishable from the
state after which the user closed the window. Prior this patch, both
conditions were reflected by an empty <capture/> node in the panorama.
Now, the latter condition is reported as <capture closed="yes"/>, which
alleviates the need to track the life cycle of a window at the client
size.
Issue #5353
When shriking the terminal window, the view must be shrinked before
shriking the pixel buffer. Otherwise, when the buffer becomes smaller
than the view, nitpicker fills the excess view area with tiled content
of the buffer, which looks funny.
Related to issue #5350
Commit 75e1f1797d increased runtime_view's initial RAM quota from 4MiB
to 52MiB, but failed to adjust the boost limit. Therefore, when
addtional RAM was requested, the limit would actually be degreased to
32MiB.
Adjust the RAM boost limit to 64MiB to make the runtime_view work on 4k
screens.
Issue #5356
Following the rework of the graphics stack, the decorator inside
Leitzentrale needs more capabilities. This manifests in a log message:
```
[leitzentrale] child "decorator" requests resources: cap_quota=18
```
and the Leitzentrale contents execpt for the log window disappearing
from the display. The Leitzentrale layer can still be toggled using F12.
Increasing the decorator's capability quota appears to solve the issue.
Issue #5356
Increase the RAM quota of the top-level nitpicker instance to support
the flicker-free resizing of large buffers, e.g., when changing screen
resolutions. Otherwise, nitpicker warns as follows:
[init -> nitpicker] Warning: Gui (runtime -> wm -> wm -> decorator)
not enough RAM to preserve buffer content during resize
Issue #5356
This commit removes the initial dignostic message from the log. The
message is harmless because the sculpt manager upgrades the quota on
demand but its best to avoid the noise.
child "runtime_view" requests resources: cap_quota=4
Issue #5356
Instead of publishing the old audio mixer, refer to the recent
record_play_mixer providing the audio API that is used by almost
all components now.
Ref genodelabs/genode#5356
With the recent Wifi::Manager changes setting an invalid SSID will
lead to a diagnostic warning. Since disconnecting is handled by
removing the existent '<network>' there is no reason to generate
an invalid node in the first place.
Issue #5356.
This patch implements the following policy for applications requesting
exclusive input (relative motion): The pointer is grabbed as soon as the
user clicks inside the application window. It is forcibly ungrabbed on
any window-focus change or when tapping the KEY_SCREEN. An application
can always enable (transient) exclusive input during a key sequence,
e.g., when dragging the mouse while holding the mouse button. Transient
exclusive input is revoked when releasing the last button/key.
Fixes#5355
The recent changes of the GUI stack (proper accounting of cap and RAM
resources by the window manager and nitpicker, output buffered at the
server side) require quota adjustments at various GUI-related places.
Issue #5356
This interface allows a GUI client to express the intent to exclusively
observe relative motion events while locking the absolute pointer
position. This patch merely extends the interface without implementing
it.
As this change touches os/include/input/component.h, it moves the
manage/dissolve operations into the class, ensuring the call of
dissolve at destruction time.
Issue #5355
In multi-monitor scenarios, the mode is no longer a single rectangular
area but a panorama with potentially many captured rectangles. This
patch replaces the former 'mode' and 'mode_sigh' RPC by a new 'info'
ROM accessor.
Issue #5353
The new Framebuffer::Session::sync_source RPC function allows for the
selection of a specific source of sync signals in the presence of
multiple capture clients at the GUI server.
This patch contains only the extension of the interface. The information
is not evaluated by the GUI server yet.
Issue #5347
This patch adds central and safe utilities for accessing the distinct
parts of the virtual framebuffer to relieve clients from pointer
calculations.
Issue #5351
Propagate the want of an alpha channel as attribute of Framebuffer::Mode
instead of passing this property as a separate bool argument.
This clears the way for adding useful accessors for pixel/alpha/input
surfaces to the Mode type as a subsequent step.
Issue #5351
This patch ensures that the displayed pixel buffer is always consistent
by applying intermediate drawing steps on an invisible back buffer,
which is blitted to the front buffer by the GUI server.
Note that the addition of the back buffer increases the decorator's RAM
demand by 4*w*h (4 bytes per pixel) whereas w and h are the screen size.
Issue #5350
By enhancing the Framebuffer::Session interface by the new RPC functions
'blit' and 'panning', GUI clients become able to attain tearing-free
output. Two modes of operations are supported.
1. Atomic back-to-front blitting
GUI clients that partially update their user interface like regular
application dialogs, can now implement double buffering by placing
both the back buffer and front buffer within the GUI session's
framebuffer and configuring a view that shows only the front buffer.
The 'blit' operation allows the client to atomically flush pixels
from the back buffer to the front buffer.
2. Atomic buffer flipping
GUI clients that always update all pixels like a media player or
a game can now use the 'panning' feature to atomically redirect the
displayed pixels to a different portion of the GUI session's virtual
frame buffer. The virtual framebuffer always contains two frames,
the displayed one and the next one. Once the next frame is complete,
the client changes the panning position to the portion containing
the next frame.
Issue #5350
This patch changes the precision of the configuration's motion attribute
to a multiple of 10 ms (centi-seconds). The previous version used steps
of 20 ms. Hence, one needs to adjust existing configurations by doubling
the motion attribute values of the themed decorator.
Issue #5347
This patch removes the use of sync signals as time source. The animation
phase is now timed using a timer connection as tick source while sync
signals are used for scheduling the redraws.
Issue #5347
This commit streamlines the interaction between the Wifi::Manager
and the wpa_supplicant's CTRL interface.
As user-facing changes it alters some default settings and introduces
new features:
* Every configured network now needs to explicitly have its
'auto_connect' (to be considered an option for joining) attribute
set to 'true' whereas this was previously the default value if the
attribute was not set at all.
* The 'log_level' attribute is added and configures the supplicant's
verbosity. Valid values correspond to levels used by the supplicant
and are as follows 'excessive', 'msgdump', 'debug', 'info', 'warning'
and 'error'. The default value is 'error' and configures the least
amount of verbosity.
* The 'bgscan' attribute may be used to configure the way the
supplicant performs background-scanning to steer or rather optimize
roaming decision within the same network. The default value is set
to 'simple:30:-70:600'. It can be disabled by specifying an empty
value, e.g. 'bgscan=""'.
* The 'verbose_state' attribute was removed alltogether and similar
functionality is now coverted by 'verbose' attribute.
Implementation-wise the internals changed significantly and are
outlined in the following paragraphs.
Formerly the interaction between the manager and the supplicant
was handled in an apparent way where the internal state of each
interaction was in plain sight. This made the flow cumbersome to
follow and therefor each interaction is now confined to its own
'Action' object that encapsulates the ping-pong of commands and
responses between the manager and the supplicant. All actions are
processed in an sequential way and thus there is no longer any
need to defer pending actions depending on the interal state of
the current interaction. Configuration changes as well as events
issued by the supplicant where new actions can be created are
handled in this fashion. Of note are both signal-handlers,
'_handle_cmds' and '_handle_events' respectively.
The state report, which provides the information about the current
state of connectivity to a given wireless network, was dealt with
in the same vein and its handling was spread across the manager
implementation. Again, to make it easier to follow, the generation
of the state report is now purely driven by the 'Join_state' object.
This object encapsulates the state of connectivity and is normally
updated by events issued from the supplicant (see '_handle_events').
It is also incorporated when handling command responses (see
'_handle_cmds').
Handling of timed-actions, like scan and signal quality
update requests, was done by setting a timeout at the Timer session
directly and thus only one timed-action could be pending at any time.
This excluded dealing with timed-actions like connected-scanning
and signal quality polling concurrently. This was changed and now
a One_shot_timeout is used to programm each concurrent timed-action.
For implementing the communication channel for the CTRL interface the
manager and supplicant use a shared memory buffer, the Msg_buffer.
Since the CTRL interface for Genode was implemented using C, some
shenanigans were performed to access the memory buffer. Now the
CTRL interface implementation uses C++ and only exports the functions
required by the supplicant as C. This simplifies the usage of the
Msg_buffer and allows for removing the global functions needed for
synchronizing the Msg_buffer access as those are now part of the
object itself via the 'Notify_interface'.
Fixes#5341.
When starting testnit with the wm, the child views briefly appear at a
position relative to the top-left corner of the screen until the
top-level view has been positioned by the layouter. This patch keeps
child views invisible until their respective parent views are
positioned.
When restacking a top-level view, execute the top-level restacking
before updating the child views. Otherwise, child views may wrongly
refer to the old stacking position of the top-level view.
Issue #5242
Use Genode namespace, indicate 'Main' members as being private,
use Session_object, remove unused '_focus_request_reporter',
use Id_space for Window_registry, replace lookup by with pattern.
With this patch, the wm accounts RAM and caps consumed on behalf of its
clients to the respective client's session quota instead of paying out
of its own pocket. This should make the wm resilient against resource
exhaustion and lowers the quota requirements.
Issue #5340
