NAME

       wayland::region_t - region interface

SYNOPSIS

       #include <wayland-client-protocol.hpp>

       Inherits wayland::proxy_t.

   Public Types
       enum class wrapper_type { standard, display, foreign, proxy_wrapper }

   Public Member Functions
       void add (int32_t x, int32_t y, int32_t width, int32_t height)
           add rectangle to region
       void subtract (int32_t x, int32_t y, int32_t width, int32_t height)
           subtract rectangle from region
       uint32_t get_id () const
           Get the id of a proxy object.
       std::string get_class () const
           Get the interface name (class) of a proxy object.
       uint32_t get_version () const
           Get the protocol object version of a proxy object.
       wrapper_type get_wrapper_type () const
           Get the type of a proxy object.
       void set_queue (event_queue_t queue)
           Assign a proxy to an event queue.
       wl_proxy * c_ptr () const
           Get a pointer to the underlying C struct.
       bool proxy_has_object () const
           Check whether this wrapper actually wraps an object.
       operator bool () const
           Check whether this wrapper actually wraps an object.
       bool operator== (const proxy_t &right) const
           Check whether two wrappers refer to the same object.
       bool operator!= (const proxy_t &right) const
           Check whether two wrappers refer to different objects.
       void proxy_release ()
           Release the wrapped object (if any), making this an empty wrapper.

   Static Public Attributes
       static constexpr std::uint32_t add_since_version = 1
           Minimum protocol version required for the add function.
       static constexpr std::uint32_t subtract_since_version = 1
           Minimum protocol version required for the subtract function.

Detailed Description

       region interface

       A region object describes an area.

       Region objects are used to describe the opaque and input regions of a surface.

       Definition at line 3785 of file wayland-client-protocol.hpp.

Member Enumeration Documentation

   enum class wayland::proxy_t::wrapper_type [strong],  [inherited]
       Underlying wl_proxy type and properties of a proxy_t that affect construction,
       destruction, and event handling

       Enumerator

       standard
              C pointer is a standard type compatible with wl_proxy*. Events are dispatched and
              it is destructed when the proxy_t is destructed. User data is set.

       display
              C pointer is a wl_display*. No events are dispatched, wl_display_disconnect is
              called when the proxy_t is destructed. User data is set.

       foreign
              C pointer is a standard type compatible with wl_proxy*, but another library owns it
              and it should not be touched in a way that could affect the operation of the other
              library. No events are dispatched, wl_proxy_destroy is not called when the proxy_t
              is destructed, user data is not touched. Consequently, there is no reference
              counting for the proxy_t. Lifetime of such wrappers should preferably be short to
              minimize the chance that the owning library decides to destroy the wl_proxy.

       proxy_wrapper
              C pointer is a wl_proxy* that was constructed with wl_proxy_create_wrapper. No
              events are dispatched, wl_proxy_wrapper_destroy is called when the proxy_t is
              destroyed. Reference counting is active. A reference to the proxy_t creating this
              proxy wrapper is held to extend its lifetime until after the proxy wrapper is
              destroyed.

       Definition at line 116 of file wayland-client.hpp.

Member Function Documentation

   void region_t::add (int32_t x, int32_t y, int32_t width, int32_t height)
       add rectangle to region

       Parameters
           x region-local x coordinate
           y region-local y coordinate
           width rectangle width
           height rectangle height

       Add the specified rectangle to the region.

       Definition at line 3495 of file wayland-client-protocol.cpp.

   wl_proxy * wayland::proxy_t::c_ptr () const [inherited]
       Get a pointer to the underlying C struct.

       Returns
           The underlying wl_proxy wrapped by this proxy_t if it exists, otherwise an exception
           is thrown

   std::string wayland::proxy_t::get_class () const [inherited]
       Get the interface name (class) of a proxy object.

       Returns
           The interface name of the object associated with the proxy

   uint32_t wayland::proxy_t::get_id () const [inherited]
       Get the id of a proxy object.

       Returns
           The id the object associated with the proxy

   uint32_t wayland::proxy_t::get_version () const [inherited]
       Get the protocol object version of a proxy object. Gets the protocol object version of a
       proxy object, or 0 if the proxy was created with unversioned API.

       A returned value of 0 means that no version information is available, so the caller must
       make safe assumptions about the object's real version.

       display_t will always return version 0.

       Returns
           The protocol object version of the proxy or 0

   wrapper_type wayland::proxy_t::get_wrapper_type () const [inline],  [inherited]
       Get the type of a proxy object.

       Definition at line 302 of file wayland-client.hpp.

   wayland::proxy_t::operator bool () const [inherited]
       Check whether this wrapper actually wraps an object.

       Returns
           true if there is an underlying object, false if this wrapper is empty

   bool wayland::proxy_t::operator!= (const proxy_t & right) const [inherited]
       Check whether two wrappers refer to different objects.

   bool wayland::proxy_t::operator== (const proxy_t & right) const [inherited]
       Check whether two wrappers refer to the same object.

   bool wayland::proxy_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 wayland::proxy_t::proxy_release () [inherited]
       Release the wrapped object (if any), making this an empty wrapper. Note that display_t
       instances cannot be released this way. Attempts to do so are ignored.

       Examples
           foreign_display.cpp.

   void wayland::proxy_t::set_queue (event_queue_t queue) [inherited]
       Assign a proxy to an event queue.

       Parameters
           queue The event queue that will handle this proxy

       Assign proxy to event queue. Events coming from proxy will be queued in queue instead of
       the display's main queue.

       See also: display_t::dispatch_queue().

       Examples
           proxy_wrapper.cpp.

   void region_t::subtract (int32_t x, int32_t y, int32_t width, int32_t height)
       subtract rectangle from region

       Parameters
           x region-local x coordinate
           y region-local y coordinate
           width rectangle width
           height rectangle height

       Subtract the specified rectangle from the region.

       Definition at line 3501 of file wayland-client-protocol.cpp.

Member Data Documentation

   constexpr std::uint32_t wayland::region_t::add_since_version = 1 [static],  [constexpr]
       Minimum protocol version required for the add function.

       Definition at line 3820 of file wayland-client-protocol.hpp.

   constexpr std::uint32_t wayland::region_t::subtract_since_version = 1 [static],  [constexpr]
       Minimum protocol version required for the subtract function.

       Definition at line 3835 of file wayland-client-protocol.hpp.

Author

       Generated automatically by Doxygen for Wayland++ from the source code.