wayland_server_zwp_pointer_gesture_swipe_v1_t
a swipe gesture object
Synopsis
#include <wayland-server-protocol-unstable.hpp>
Inherits wayland::server::resource_t.
Public Member Functions
std::function< void()> & on_destroy ()
destroy the pointer swipe gesture object
void begin (uint32_t serial, uint32_t time, surface_t const &surface, uint32_t fingers, bool post=true)
multi-finger swipe begin
void update (uint32_t time, double dx, double dy, bool post=true)
multi-finger swipe motion
void end (uint32_t serial, uint32_t time, int32_t cancelled, bool post=true)
multi-finger swipe end
bool proxy_has_object () const
Check whether this wrapper actually wraps an object.
void post_no_memory () const
uint32_t get_id () const
client_t get_client () const
unsigned int get_version () const
std::string get_class ()
Static Public Attributes
static constexpr std::uint32_t begin_since_version = 1
Minimum protocol version required for the begin function.
static constexpr std::uint32_t update_since_version = 1
Minimum protocol version required for the update function.
static constexpr std::uint32_t end_since_version = 1
Minimum protocol version required for the end function.
Detailed Description
a swipe gesture object
A swipe gesture object notifies a client about a multi-finger swipe gesture detected on an indirect input device such as a touchpad. The gesture is usually initiated by multiple fingers moving in the same direction but once initiated the direction may change. The precise conditions of when such a gesture is detected are implementation-dependent.
A gesture consists of three stages: begin, update (optional) and end. There cannot be multiple simultaneous hold, pinch or swipe gestures on a same pointer/seat, how compositors prevent these situations is implementation-dependent.
A gesture may be cancelled by the compositor or the hardware. Clients should not consider performing permanent or irreversible actions until the end of a gesture has been received.
Definition at line 3204 of file wayland-server-protocol-unstable.hpp.
Member Function Documentation
void zwp_pointer_gesture_swipe_v1_t::begin (uint32_t serial, uint32_t time, surface_t const & surface, uint32_t fingers, bool post = true)
multi-finger swipe begin
- Parameters
serial
time timestamp with millisecond granularity
surface
fingers number of fingers
This event is sent when a multi-finger swipe gesture is detected on the device.
Definition at line 5623 of file wayland-server-protocol-unstable.cpp.
void zwp_pointer_gesture_swipe_v1_t::end (uint32_t serial, uint32_t time, int32_t cancelled, bool post = true)
multi-finger swipe end
- Parameters
serial
time timestamp with millisecond granularity
cancelled 1 if the gesture was cancelled, 0 otherwise
This event is sent when a multi-finger swipe gesture ceases to be valid. This may happen when one or more fingers are lifted or the gesture is cancelled.
When a gesture is cancelled, the client should undo state changes caused by this gesture. What causes a gesture to be cancelled is implementation-dependent.
Definition at line 5633 of file wayland-server-protocol-unstable.cpp.
std::string wayland::server::resource_t::get_class () [inherited]
Retrieve the interface name (class) of a resource object.
- Returns
Interface name of the resource object.
client_t wayland::server::resource_t::get_client () const [inherited]
Get the associated client
- Returns
the client that owns the resource.
uint32_t wayland::server::resource_t::get_id () const [inherited]
Get the internal ID of the resource
- Returns
the internal ID of the resource
unsigned int wayland::server::resource_t::get_version () const [inherited]
Get interface version
- Returns
Interface version this resource has been constructed with.
std::function< void()> & zwp_pointer_gesture_swipe_v1_t::on_destroy ()
destroy the pointer swipe gesture object
Definition at line 5617 of file wayland-server-protocol-unstable.cpp.
void wayland::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.
bool wayland::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
void zwp_pointer_gesture_swipe_v1_t::update (uint32_t time, double dx, double dy, bool post = true)
multi-finger swipe motion
- Parameters
time timestamp with millisecond granularity
dx delta x coordinate in surface coordinate space
dy delta y coordinate in surface coordinate space
This event is sent when a multi-finger swipe gesture changes the position of the logical center.
The dx and dy coordinates are relative coordinates of the logical center of the gesture compared to the previous event.
Definition at line 5628 of file wayland-server-protocol-unstable.cpp.
Member Data Documentation
constexpr std::uint32_t wayland::server::zwp_pointer_gesture_swipe_v1_t::begin_since_version = 1 [static], [constexpr]
Minimum protocol version required for the begin function.
Definition at line 3249 of file wayland-server-protocol-unstable.hpp.
constexpr std::uint32_t wayland::server::zwp_pointer_gesture_swipe_v1_t::end_since_version = 1 [static], [constexpr]
Minimum protocol version required for the end function.
Definition at line 3287 of file wayland-server-protocol-unstable.hpp.
constexpr std::uint32_t wayland::server::zwp_pointer_gesture_swipe_v1_t::update_since_version = 1 [static], [constexpr]
Minimum protocol version required for the update function.
Definition at line 3267 of file wayland-server-protocol-unstable.hpp.
Author
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