For two axes [a, b] and [x, y] (inclusive), the formula to scale point P(ab)
to (x,y) is:
(P - a)/(b - a) * (y - x) + x
And the whole end result rounded of course to get the integer we need.
In the map stored in each keyboard device, the first line refers to
minimum keycode, i.e., the 0th line refers to keycode 8. When not
using XKB the wrong test caused some keys to be interpreted as
locks ('m' for instance). The had to be pressed twice to generate
both KeyPress and KeyRelease events.
Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
Button events were mapped once in GetPointerEvents and then again in
UpdateDeviceState. While it might make sense to just fix up UpdateDeviceState,
it turns out to be better to leave the raw button number in the event because
DGA reports raw device events without button translation, and so when it calls
UpdateDeviceState, the button down counts get scrambled and buttons get stuck
down.
See also:
http://lists.freedesktop.org/archives/xorg/2008-June/036201.html
Signed-off-by: Peter Hutterer <peter@cs.unisa.edu.au>
The core protocol requires absolute values and it's a bit hard to get them if
we only have relative ones in the history. Switch the motion history to
absolute, and if we really need the relative values, we can probably generated
them from the abs. ones in the future.
Add each event to the master's MH as well as to the SDs. In the MD, store
min/max and the actual value. When retrieving the MH, rescale all coordinates
to the current coordinate range and only post those valuators that are
currently active on the device.
Since we can't predict how many valuators may be in a future SD attached to an
MD, we need to preallocate a history buffer that is large enough to keep
MAX_VALUATORS coordinates per event.
In addition, the history buffer needs to memorize the coordinate ranges at the
time, thus requiring MDs to store (min_val, max_val, current_val, time)
instead of (current_val, time) for each motion history entry.
This commit only fixes the allocation.
With the MD/SD device hierarchy we need control over the generation of the
motion history as well as the conversion later before posting it to the
client. So let's not let the drivers change it.
No x.org driver currently uses it anyway, linuxwacom doesn't either so dumping
it seems safe enough.
master->last.valuator[x] for x > 2 is undefined. For all other devices, it's
the respective device's last valuators.
If the lastSlave did not have a valuator that is to be updated now, it is
reset to 0.
In GPE, we don't care about the device mode. Let's put the absolute values
into the deviceValuator event and worry about relative valuators on the other
side of the EQ.
Assuming master->last.valuators is in screen coords, SD's are always in device
coordinates.
1. If an event comes in, scale masters->last to the device, drop into device's
last->valuators.
2. Apply motion from the actual event
3. Scale back to screen coords, check if we may need to cross screens
4. Drop screen coords into master->last
5. Rescale to device coords, drop into deviceValuator event and SD->last
6. Drop screen coords into ev->root_x/y
Whoopee...
During GetPointerEvents (and others), we need to access the last coordinates
posted for this device from the driver (not as posted to the client!). Lastx/y
is ok if we only have two axes, but with more complex devices we also need to
transition between all other axes.
ABI break, recompile your input drivers.
Changed all the checks for x&y valuator so the more complex
calculation is only made once.
Added TODOs for valuator/axis 2 and above for future correct
handling of relative reporting of these.
Signed-off-by: Peter Hutterer <peter@cs.unisa.edu.au>
valuators[] is passed from the DDX. Depending on the device mode, update it
with either absolute values or relative values. The deviceValuator event sent
to the client will then contain the respective values.
This isn't quite finished yet, but at least it gives us the ability to use a
tablet as a normal mouse - with all the scaling in place.
Signed-off-by: Peter Hutterer <peter@cs.unisa.edu.au>
XQuartz was crashing because the Appkit thread was trying to GetXXXEvents while the Xserver thread was exiting.
This adds some more sanity checks and avoids that crash
(cherry picked from commit 34ec4bd6ac)
Add Prox events to the if-clauses with the other events
that are usually sent from the input devices.
Ensure that the event deliverers won't try to deliver
events of type '0' (some extended events doesn't have
an equivalent core-type)
Small modification by Peter Hutterer.
Signed-off-by: Peter Hutterer <peter@cs.unisa.edu.au>
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.
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).
