booltouch_t::can_orientation()const
Check whether the orientation function is available with the currently bound version of the protocol.
Definition at line 2906 of file wayland-server-protocol.cpp.
booltouch_t::can_shape()const
Check whether the shape function is available with the currently bound version of the protocol.
Definition at line 2896 of file wayland-server-protocol.cpp.
voidtouch_t::cancel(boolpost=true)
touch session cancelled Sent if the compositor decides the touch stream is a global gesture. No further
events are sent to the clients from that particular gesture. Touch cancellation applies to all touch
points currently active on this client's surface. The client is responsible for finalizing the touch
points, future touch points on this surface may reuse the touch point ID.
Definition at line 2886 of file wayland-server-protocol.cpp.
voidtouch_t::down(uint32_tserial,uint32_ttime,surface_tconst&surface,int32_tid,doublex,doubley,boolpost=true)
touch down event and beginning of a touch sequence
Parametersserial serial number of the touch down event
time timestamp with millisecond granularity
surface surface touched
id the unique ID of this touch point
x surface-local x coordinate
y surface-local y coordinate
A new touch point has appeared on the surface. This touch point is assigned a unique ID. Future events
from this touch point reference this ID. The ID ceases to be valid after a touch up event and may be
reused in the future.
Definition at line 2866 of file wayland-server-protocol.cpp.
voidtouch_t::frame(boolpost=true)
end of touch frame event Indicates the end of a set of events that logically belong together. A client is
expected to accumulate the data in all events within the frame before proceeding.
A wl_touch.frame terminates at least one event but otherwise no guarantee is provided about the set of
events within a frame. A client must assume that any state not updated in a frame is unchanged from the
previously known state.
Definition at line 2881 of file wayland-server-protocol.cpp.
std::stringwayland::server::resource_t::get_class()[inherited]
Retrieve the interface name (class) of a resource object.
Returns
Interface name of the resource object.
client_twayland::server::resource_t::get_client()const[inherited]
Get the associated client
Returns
the client that owns the resource.
uint32_twayland::server::resource_t::get_id()const[inherited]
Get the internal ID of the resource
Returns
the internal ID of the resource
unsignedintwayland::server::resource_t::get_version()const[inherited]
Get interface version
Returns
Interface version this resource has been constructed with.
voidtouch_t::motion(uint32_ttime,int32_tid,doublex,doubley,boolpost=true)
update of touch point coordinates
Parameterstime timestamp with millisecond granularity
id the unique ID of this touch point
x surface-local x coordinate
y surface-local y coordinate
A touch point has changed coordinates.
Definition at line 2876 of file wayland-server-protocol.cpp.
std::function<void()>&touch_t::on_release()
release the touch object
Definition at line 2860 of file wayland-server-protocol.cpp.
voidtouch_t::orientation(int32_tid,doubleorientation,boolpost=true)
update orientation of touch point
Parametersid the unique ID of this touch point
orientation angle between major axis and positive surface y-axis in degrees
Sent when a touchpoint has changed its orientation.
This event does not occur on its own. It is sent before a wl_touch.frame event and carries the new shape
information for any previously reported, or new touch points of that frame.
Other events describing the touch point such as wl_touch.down, wl_touch.motion or wl_touch.shape may be
sent within the same wl_touch.frame. A client should treat these events as a single logical touch point
update. The order of wl_touch.shape, wl_touch.orientation and wl_touch.motion is not guaranteed. A
wl_touch.down event is guaranteed to occur before the first wl_touch.orientation event for this touch ID
but both events may occur within the same wl_touch.frame.
The orientation describes the clockwise angle of a touchpoint's major axis to the positive surface y-axis
and is normalized to the -180 to +180 degree range. The granularity of orientation depends on the touch
device, some devices only support binary rotation values between 0 and 90 degrees.
This event is only sent by the compositor if the touch device supports orientation reports.
Definition at line 2901 of file wayland-server-protocol.cpp.
voidwayland::server::resource_t::post_no_memory()const[inherited]
Post 'not enough memory' error to the client
If the compositor has not enough memory to fulfill a certail request of the client, this function can be
called to notify the client of this circumstance.
boolwayland::server::resource_t::proxy_has_object()const[inherited]
Check whether this wrapper actually wraps an object.
Returns
true if there is an underlying object, false if this wrapper is empty
voidtouch_t::shape(int32_tid,doublemajor,doubleminor,boolpost=true)
update shape of touch point
Parametersid the unique ID of this touch point
major length of the major axis in surface-local coordinates
minor length of the minor axis in surface-local coordinates
Sent when a touchpoint has changed its shape.
This event does not occur on its own. It is sent before a wl_touch.frame event and carries the new shape
information for any previously reported, or new touch points of that frame.
Other events describing the touch point such as wl_touch.down, wl_touch.motion or wl_touch.orientation
may be sent within the same wl_touch.frame. A client should treat these events as a single logical touch
point update. The order of wl_touch.shape, wl_touch.orientation and wl_touch.motion is not guaranteed. A
wl_touch.down event is guaranteed to occur before the first wl_touch.shape event for this touch ID but
both events may occur within the same wl_touch.frame.
A touchpoint shape is approximated by an ellipse through the major and minor axis length. The major axis
length describes the longer diameter of the ellipse, while the minor axis length describes the shorter
diameter. Major and minor are orthogonal and both are specified in surface-local coordinates. The center
of the ellipse is always at the touchpoint location as reported by wl_touch.down or wl_touch.move.
This event is only sent by the compositor if the touch device supports shape reports. The client has to
make reasonable assumptions about the shape if it did not receive this event.
Definition at line 2891 of file wayland-server-protocol.cpp.
voidtouch_t::up(uint32_tserial,uint32_ttime,int32_tid,boolpost=true)
end of a touch event sequence
Parametersserial serial number of the touch up event
time timestamp with millisecond granularity
id the unique ID of this touch point
The touch point has disappeared. No further events will be sent for this touch point and the touch
point's ID is released and may be reused in a future touch down event.
Definition at line 2871 of file wayland-server-protocol.cpp.
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