XkbFinishDeviceInit does the following:
xkbi->kbdProc= pXDev->kbdfeed->CtrlProc;
pXDev->kbdfeed->CtrlProc= XkbDDXKeybdCtrlProc;
If we directly copy the device classes for the VCK, pXDev->kbdfeed->CtrlProc
at the time of copying is still XbkDDXKeybdCtrlProc. So at some point
XkbDDXKeybdCtrlProc is called, and calls itself, and calls itself, and...
Setting the device's classes to NULL seems to fix things. The memory isn't
lost, it gets stored into the devPrivates and freed at device closing time.
To recap: the original XC-SECURITY extension disallowed background "None" if
the window was untrusted. XACE 1.0 preserved this check as a hook function.
XACE pre-2.0 removed the hook and first abolished background "None entirely,
then restored it as a global on/off switch in response to Bug #13683.
Now it's back to being per-window, via a flag instead of a hook function.
Before we enable the device through the driver, we size it up and make sure
that the events in the event list contain enough bytes for a possible
ClassesChangedEvent lateron.
The latter is used to increase the amount of allocated memory for the event
list. This will be needed for ClassesChangedEvents that can be of more or less
arbitrary size (larger than 32 anyway).
Rather than letting the DDX allocate the events, allocate them once in the DIX
and just pass it around when needed.
DDX should call GetEventList() to obtain this list and then pass it into
Get{Pointer|Keyboard}Events.
AllowAll is the last check before the parent window is checked. This allows
to override a DenyAll in the parent window in a simpler way than before (the
previous method required all devices to be in the permit list).
In the case that the device cursor was the first in the list of cursors
the window knew about, unsetting the cursor could lead to a segfault
due to pPrev being NULL. Instead catch the condition and correctly remove
the node from the list. Since there is no cursor now set on the device,
we simply return success as the parent windows cursor will propogate
down later.
Signed-off-by: Peter Hutterer <peter@cs.unisa.edu.au>
Relative events that generates both core and extention
events will have its axis cliped and screen changed by
miPointerSetPosition when the events are processed. For
absolute and non core-generating relative events the
axis must be clipped if we shouldn't end up completely
outside the defined ranges (if any).
Don't use a possitive value as a marker for if a max-value
is defined on the valuators. Use the existence of a valid
value range instead. This will also make it possible to
define arbitrary start and end-values for min and max as
long as min < max.
The correct thing would be to return the ClientPointer. However, if the client
for some reason has a core grab on another device (e.g. as result of a passive
grab), return the coordinates of the grabbed device instead.
This makes the use of nautilus a bit saner.
If the window being changed is set as the motion hint window for any device,
the device's motion hint window is set to NULL. Which is kinda what the old
code did, except that it did it with only the VCP.
Composite uses an unmap/map cycle to trigger backing pixmap allocation
and cliprect recomputation when a window is redirected or unredirected.
To avoid protocol visible side effects, map and unmap events are
disabled temporarily. However, when a window is unmapped it is also
removed from grabs and loses focus, but these state changes are not
disabled.
This change supresses the unmap side effects during the composite
unmap/map cycle and fixes this bug:
http://bugzilla.gnome.org/show_bug.cgi?id=488264
where compiz would cause gnome-screensaver to lose its grab when
compiz unredirects the fullscreen lock window.
This is a significant shift in how input events are perceived. The common
approach was to treat a core event as a different entity than the XI event.
This could result in the XI event being delivered to a different client than
the core event. This doesn't work nicely if they come from the same device.
Instead, we treat an input event as a single event, that is delivered through
two separate APIs. So when delivering an event, we first try the XI event,
then the core event. If the window want's neither, we go to the parent and
repeat. Once either core or XI has been delivered, the processing stops.
Important: Different to the previous method, if a client registers for core
button events, the parent window will not get XI events. This should only
cause problems when you're mixing core and XI events, so don't do that!
Generic events don't fit into this yet, they cause me headaches.
This should restore the correct passive grab processing. When checking for
passive grabs, the core event is emulated and we check first for XI grabs on
the window, then for core grabs. Regardless of which event activates the grab,
the XI event is stored in the device's EQ.
When replaying the event, we take the XI event and replay it on the next
window, again including the emulation of the core event.
If two devices are attached to the same master device, pressing button 1 on
each of them leads to two button presses from the same device. Some apps
really don't like that.
So we just put a counter in place and only send the first press and the last
release.
(first_valuator + num_valuators) must never be larger than the number of axes,
otherwise DIX freaks out. And from looking at libXI, anything larger than 6 is
wrong too.
(cherry picked from commit 9f6ae61ad1)
General code cleanup, whitespace, dead code removal, added missing prototypes.
Made Xquartz come to foreground later in startup, so it doesn't appear for Xquartz -version
(cherry picked from commit 36922e8ff4)
From the X11 protocol spec:
"If background None is specified, the window has no defined background."
This means that toolkits and apps cannot rely on the "transparent" nature
of the current implementation! At some point before the next release,
XACE will switch back to a solid background as the default.
(first_valuator + num_valuators) must never be larger than the number of axes,
otherwise DIX freaks out. And from looking at libXI, anything larger than 6 is
wrong too.
Initialise num_events to 1, so we always send a proximity event, and then
optionally valuator events. Also make sure mieq can deal with valuator
events sent after proximity events.
If we have one global filter, one pointer may change the filter value and
affect another pointer.
Reproduceable effect:
blackbox and xterm, start dragging xterm then click anywhere with the other
pointer (attached to different masterd device!). The button release resets
the filter[Motion_Filter(button)] value, thus stopping dragging and no event
is sent to the client anymore.
Having the filters set per device gets around this.
In some cases (e.g. using x2x) the previous model broke, with a window ending
not counting down to 0 anymore. Special treatment for NotifyUngrab seems to
help here.
Current solution: If a NotifyGrab is to be sent ignore it. If a NotifyUngrab
enter is sent, only adjust the semaphore if it is on 0. Likewise, do the same
for a NotifyUngrab leave if the semaphore is on 1. This seems to work alright
so far.
We free the ValuatorClassRec quite regularly. If a SIGIO is handled while
we're swapping device classes, we can bring the server down when we try to
access lastx/lasty of the master device.
XkbInitKeyboardDefviceStruct may call FatalError if it fails. FatalError then
cleans up all the devices, resulting in a segfault if the pointer is
uninitialised.
