voiddata_device_t::data_offer(boolpost=true)
introduce a new wl_data_offer
Returns
the new data_offer object
The data_offer event introduces a new wl_data_offer object, which will subsequently be used in either the
data_device.enter event (for drag-and-drop) or the data_device.selection event (for selections).
Immediately following the data_device.data_offer event, the new data_offer object will send out
data_offer.offer events to describe the mime types it offers.
Definition at line 2096 of file wayland-server-protocol.cpp.
voiddata_device_t::drop(boolpost=true)
end drag-and-drop session successfully The event is sent when a drag-and-drop operation is ended because
the implicit grab is removed.
The drag-and-drop destination is expected to honor the last action received through wl_data_offer.action,
if the resulting action is 'copy' or 'move', the destination can still perform wl_data_offer.receive
requests, and is expected to end all transfers with a wl_data_offer.finish request.
If the resulting action is 'ask', the action will not be considered final. The drag-and-drop destination
is expected to perform one last wl_data_offer.set_actions request, or wl_data_offer.destroy in order to
cancel the operation.
Definition at line 2116 of file wayland-server-protocol.cpp.
voiddata_device_t::enter(uint32_tserial,surface_tconst&surface,doublex,doubley,data_offer_tconst&id,boolpost=true)
initiate drag-and-drop session
Parametersserial serial number of the enter event
surface client surface entered
x surface-local x coordinate
y surface-local y coordinate
id source data_offer object
This event is sent when an active drag-and-drop pointer enters a surface owned by the client. The
position of the pointer at enter time is provided by the x and y arguments, in surface-local coordinates.
Definition at line 2101 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.
voiddata_device_t::leave(boolpost=true)
end drag-and-drop session This event is sent when the drag-and-drop pointer leaves the surface and the
session ends. The client must destroy the wl_data_offer introduced at enter time at this point.
Definition at line 2106 of file wayland-server-protocol.cpp.
voiddata_device_t::motion(uint32_ttime,doublex,doubley,boolpost=true)
drag-and-drop session motion
Parameterstime timestamp with millisecond granularity
x surface-local x coordinate
y surface-local y coordinate
This event is sent when the drag-and-drop pointer moves within the currently focused surface. The new
position of the pointer is provided by the x and y arguments, in surface-local coordinates.
Definition at line 2111 of file wayland-server-protocol.cpp.
std::function<void()>&data_device_t::on_release()
destroy data device This request destroys the data device.
Definition at line 2090 of file wayland-server-protocol.cpp.
std::function<void(data_source_t,uint32_t)>&data_device_t::on_set_selection()
copy data to the selection
Parameterssource data source for the selection
serial serial number of the event that triggered this request
This request asks the compositor to set the selection to the data from the source on behalf of the
client.
To unset the selection, set the source to NULL.
Definition at line 2084 of file wayland-server-protocol.cpp.
std::function<void(data_source_t,surface_t,surface_t,uint32_t)>&data_device_t::on_start_drag()
start drag-and-drop operation
Parameterssource data source for the eventual transfer
origin surface where the drag originates
icon drag-and-drop icon surface
serial serial number of the implicit grab on the origin
This request asks the compositor to start a drag-and-drop operation on behalf of the client.
The source argument is the data source that provides the data for the eventual data transfer. If source
is NULL, enter, leave and motion events are sent only to the client that initiated the drag and the
client is expected to handle the data passing internally. If source is destroyed, the drag-and-drop
session will be cancelled.
The origin surface is the surface where the drag originates and the client must have an active implicit
grab that matches the serial.
The icon surface is an optional (can be NULL) surface that provides an icon to be moved around with the
cursor. Initially, the top-left corner of the icon surface is placed at the cursor hotspot, but
subsequent wl_surface.attach request can move the relative position. Attach requests must be confirmed
with wl_surface.commit as usual. The icon surface is given the role of a drag-and-drop icon. If the icon
surface already has another role, it raises a protocol error.
The current and pending input regions of the icon wl_surface are cleared, and wl_surface.set_input_region
is ignored until the wl_surface is no longer used as the icon surface. When the use as an icon ends, the
current and pending input regions become undefined, and the wl_surface is unmapped.
Definition at line 2078 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.
voiddata_device_t::post_role(std::stringconst&msg)
Post error: given wl_surface has another role.
Definition at line 2126 of file wayland-server-protocol.cpp.
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
voiddata_device_t::selection(data_offer_tconst&id,boolpost=true)
advertise new selection
Parametersid selection data_offer object
The selection event is sent out to notify the client of a new wl_data_offer for the selection for this
device. The data_device.data_offer and the data_offer.offer events are sent out immediately before this
event to introduce the data offer object. The selection event is sent to a client immediately before
receiving keyboard focus and when a new selection is set while the client has keyboard focus. The
data_offer is valid until a new data_offer or NULL is received or until the client loses keyboard focus.
Switching surface with keyboard focus within the same client doesn't mean a new selection will be sent.
The client must destroy the previous selection data_offer, if any, upon receiving this event.
Definition at line 2121 of file wayland-server-protocol.cpp.
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