1 <?xml version="1.0" encoding="UTF-8"?>
2 <protocol name="wayland">
5 Copyright © 2008-2011 Kristian Høgsberg
6 Copyright © 2010-2011 Intel Corporation
8 Permission to use, copy, modify, distribute, and sell this
9 software and its documentation for any purpose is hereby granted
10 without fee, provided that the above copyright notice appear in
11 all copies and that both that copyright notice and this permission
12 notice appear in supporting documentation, and that the name of
13 the copyright holders not be used in advertising or publicity
14 pertaining to distribution of the software without specific,
15 written prior permission. The copyright holders make no
16 representations about the suitability of this software for any
17 purpose. It is provided "as is" without express or implied
20 THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS
21 SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND
22 FITNESS, IN NO EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY
23 SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
24 WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN
25 AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION,
26 ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF
30 <interface name="wl_display" version="1">
31 <description summary="core global object">
32 The core global object. This is a special singleton object. It
33 is used for internal wayland protocol features.
36 <description summary="bind an object to the display">
37 Binds a new, client-created object to the server using @name as
40 <arg name="name" type="uint" summary="unique number id for object"/>
41 <arg name="interface" type="string"/>
42 <arg name="version" type="uint"/>
43 <arg name="id" type="new_id" interface="wl_object"/>
47 <description summary="asynchronous roundtrip">
48 The sync request asks the server to invoke the 'done' request
49 on the provided wl_callback object. Since requests are
50 handled in-order, this can be used as a barrier to ensure all
51 previous requests have been handled.
53 <arg name="callback" type="new_id" interface="wl_callback"/>
57 <description summary="fatal error event">
58 The error event is sent out when a fatal (non-recoverable)
61 <arg name="object_id" type="object" interface="wl_object"/>
62 <arg name="code" type="uint"/>
63 <arg name="message" type="string"/>
67 <description summary="global error values">
68 These errors are global and can be emitted in response to any
71 <entry name="invalid_object" value="0"
72 summary="server couldn't find object"/>
73 <entry name="invalid_method" value="1"
74 summary="method doesn't exist on the specified interface"/>
75 <entry name="no_memory" value="2"
76 summary="server is out of memory"/>
80 <description summary="announce global object">
81 Notify the client of global objects. These are objects that
82 are created by the server. Globals are published on the
83 initial client connection sequence, upon device hotplugs,
84 device disconnects, reconfiguration or other events. A client
85 can 'bind' to a global object by using the bind request. This
86 creates a client side handle that lets the object emit events
87 to the client and lets the client invoke requests on the
90 <arg name="name" type="uint"/>
91 <arg name="interface" type="string"/>
92 <arg name="version" type="uint"/>
95 <event name="global_remove">
96 <description summary="announce removal of global object">
97 Notify the client of removed global objects.
99 <arg name="name" type="uint"/>
102 <event name="delete_id">
103 <description summary="acknowledge object id deletion">
104 Server has deleted the id and client can now reuse it.
106 <arg name="id" type="uint" />
110 <interface name="wl_callback" version="1">
112 <arg name="serial" type="uint"/>
116 <interface name="wl_compositor" version="1">
117 <description summary="the compositor singleton">
118 A compositor. This object is a singleton global. The
119 compositor is in charge of combining the contents of multiple
120 surfaces into one displayable output.
123 <request name="create_surface">
124 <description summary="create new surface">
125 Ask the compositor to create a new surface.
127 <arg name="id" type="new_id" interface="wl_surface"/>
130 <request name="create_region">
131 <description summary="create new region">
132 Ask the compositor to create a new region.
134 <arg name="id" type="new_id" interface="wl_region"/>
138 <interface name="wl_shm_pool" version="1">
139 <description summary="a shared memory pool">
140 The wl_shm_pool object encapsulates a piece of memory shared
141 between the compsitor and client. Through the wl_shm_pool
142 object, the client can allocate shared memory wl_buffer objects.
143 The objects will share the same underlying mapped memory.
144 Reusing the mapped memory avoids the setup/teardown overhead and
145 is useful when interactively resizing a surface or for many
149 <request name="create_buffer">
150 <description summary="create wl_buffer from pool">
151 Create a wl_buffer from the pool. The buffer is created a
152 offset bytes into the pool and has width and height as
153 specified. The stride arguments specifies the number of bytes
154 from beginning of one row to the beginning of the next. The
155 format is the pixel format of the buffer and must be one of
156 those advertised through the wl_shm.format event.
158 A buffer will keep a reference to the pool it was created from
159 so it is valid to destroy the pool immediatedly after creating
163 <arg name="id" type="new_id" interface="wl_buffer"/>
164 <arg name="offset" type="int"/>
165 <arg name="width" type="int"/>
166 <arg name="height" type="int"/>
167 <arg name="stride" type="int"/>
168 <arg name="format" type="uint"/>
171 <request name="destroy" type="destructor">
172 <description summary="destroy the pool">
178 <interface name="wl_shm" version="1">
179 <description summary="shared memory support">
180 Support for shared memory buffers.
184 <entry name="invalid_format" value="0"/>
185 <entry name="invalid_stride" value="1"/>
186 <entry name="invalid_fd" value="2"/>
190 <entry name="argb8888" value="0"/>
191 <entry name="xrgb8888" value="1"/>
194 <request name="create_pool">
195 <description summary="create a shm pool">
196 This creates wl_shm_pool object, which can be used to create
197 shared memory based wl_buffer objects. The server will mmap
198 size bytes of the passed fd, to use as backing memory for then
202 <arg name="id" type="new_id" interface="wl_shm_pool"/>
203 <arg name="fd" type="fd"/>
204 <arg name="size" type="int"/>
207 <event name="format">
208 <arg name="format" type="uint"/>
212 <interface name="wl_buffer" version="1">
213 <description summary="content for a wl_surface">
214 A buffer provides the content for a wl_surface. Buffers are
215 created through factory interfaces such as wl_drm, wl_shm or
216 similar. It has a width and a height and can be attached to a
217 wl_surface, but the mechanism by which a client provides and
218 updates the contents is defined by the buffer factory interface
221 <request name="destroy" type="destructor">
222 <description summary="destroy a buffer">
223 Destroy a buffer. This will invalidate the object id.
227 <event name="release">
228 <description summary="compositor releases buffer">
229 Sent when an attached buffer is no longer used by the compositor.
235 <interface name="wl_data_offer" version="1">
236 <request name="accept">
237 <description summary="accept one of the offered mime-types">
238 Indicate that the client can accept the given mime-type, or
239 NULL for not accepted. Use for feedback during drag and drop.
242 <arg name="serial" type="uint"/>
243 <arg name="type" type="string"/>
246 <request name="receive">
247 <arg name="mime_type" type="string"/>
248 <arg name="fd" type="fd"/>
251 <request name="destroy" type="destructor"/>
254 <description summary="advertise offered mime-type">
255 Sent immediately after creating the wl_data_offer object. One
256 event per offered mime type.
259 <arg name="type" type="string"/>
263 <interface name="wl_data_source" version="1">
264 <request name="offer">
265 <description summary="add an offered mime type">
266 This request adds a mime-type to the set of mime-types
267 advertised to targets. Can be called several times to offer
270 <arg name="type" type="string"/>
273 <request name="destroy" type="destructor">
274 <description summary="destroy the data source">
275 Destroy the data source.
279 <event name="target">
280 <description summary="a target accepts an offered mime-type">
281 Sent when a target accepts pointer_focus or motion events. If
282 a target does not accept any of the offered types, type is NULL.
285 <arg name="mime_type" type="string"/>
289 <description summary="send the data">
290 Request for data from another client. Send the data as the
291 specified mime-type over the passed fd, then close the fd.
294 <arg name="mime_type" type="string"/>
295 <arg name="fd" type="fd"/>
298 <event name="cancelled">
299 <description summary="selection was cancelled">
300 Another selection became active.
306 <interface name="wl_data_device" version="1">
307 <request name="start_drag">
308 <description summary="start drag and drop operation">
309 This request asks the compositor to start a drag and drop
310 operation on behalf of the client. The source argument is the
311 data source that provides the data for the eventual data
312 transfer. The origin surface is the surface where the drag
313 originates and the client must have an active implicit grab
314 that matches the serial. The icon surface is an optional
315 (can be nil) surface that provides an icon to be moved around
316 with the cursor. Initially, the top-left corner of the icon
317 surface is placed at the cursor hotspot, but subsequent
318 surface.attach request can move the relative position.
320 <arg name="source" type="object" interface="wl_data_source"/>
321 <arg name="origin" type="object" interface="wl_surface"/>
322 <arg name="icon" type="object" interface="wl_surface"/>
323 <arg name="serial" type="uint"/>
326 <request name="set_selection">
327 <arg name="source" type="object" interface="wl_data_source"/>
328 <arg name="serial" type="uint"/>
331 <event name="data_offer">
332 <description summary="introduce a new wl_data_offer">
333 The data_offer event introduces a new wl_data_offer object,
334 which will subsequently be used in either the
335 data_device.enter event (for drag and drop) or the
336 data_device.selection event (for selections). Immediately
337 following the data_device_data_offer event, the new data_offer
338 object will send out data_offer.offer events to describe the
339 mime-types it offers.
342 <arg name="id" type="new_id" interface="wl_data_offer"/>
346 <arg name="serial" type="uint"/>
347 <arg name="surface" type="object" interface="wl_surface"/>
348 <arg name="x" type="int"/>
349 <arg name="y" type="int"/>
350 <arg name="id" type="object" interface="wl_data_offer"/>
353 <event name="leave"/>
355 <event name="motion">
356 <arg name="time" type="uint"/>
357 <arg name="x" type="int"/>
358 <arg name="y" type="int"/>
363 <event name="selection">
364 <description summary="advertise new selection">
365 The selection event is sent out to notify the client of a new
366 wl_data_offer for the selection for this device. The
367 data_device.data_offer and the data_offer.offer events are
368 sent out immediately before this event to introduce the data
369 offer object. The selection event is sent to a client
370 immediately before receiving keyboard focus and when a new
371 selection is set while the client has keyboard focus. The
372 data_offer is valid until a new data_offer or NULL is received
373 or until the client loses keyboard focus.
375 <arg name="id" type="object" interface="wl_data_offer"/>
379 <interface name="wl_data_device_manager" version="1">
380 <request name="create_data_source">
381 <arg name="id" type="new_id" interface="wl_data_source"/>
384 <request name="get_data_device">
385 <arg name="id" type="new_id" interface="wl_data_device"/>
386 <arg name="input_device" type="object" interface="wl_input_device"/>
390 <interface name="wl_shell" version="1">
391 <request name="get_shell_surface">
392 <arg name="id" type="new_id" interface="wl_shell_surface"/>
393 <arg name="surface" type="object" interface="wl_surface"/>
397 <interface name="wl_shell_surface" version="1">
399 <description summary="desktop style meta data interface">
400 An interface implemented by a wl_surface. On server side the
401 object is automatically destroyed when the related wl_surface is
402 destroyed. On client side, wl_shell_surface_destroy() must be
403 called before destroying the wl_surface object.
407 <description summary="ping client">
408 Ping a client to check if it is receiving events and sending
409 requests. A client is expected to reply with a pong request.
411 <arg name="serial" type="uint"/>
414 <request name="pong">
415 <description summary="respond to a ping event">
416 A client must respond to a ping event with a pong request or
417 the client may be deemed unresponsive.
419 <arg name="serial" type="uint"/>
422 <request name="move">
423 <arg name="input_device" type="object" interface="wl_input_device"/>
424 <arg name="serial" type="uint"/>
428 <entry name="none" value="0"/>
429 <entry name="top" value="1"/>
430 <entry name="bottom" value="2"/>
431 <entry name="left" value="4"/>
432 <entry name="top_left" value="5"/>
433 <entry name="bottom_left" value="6"/>
434 <entry name="right" value="8"/>
435 <entry name="top_right" value="9"/>
436 <entry name="bottom_right" value="10"/>
439 <request name="resize">
440 <arg name="input_device" type="object" interface="wl_input_device"/>
441 <arg name="serial" type="uint"/>
442 <arg name="edges" type="uint"/>
445 <request name="set_toplevel">
446 <description summary="make the surface a top level surface">
447 Make the surface a toplevel window.
451 <request name="set_transient">
452 <description summary="make the surface a transient surface">
453 Map the surface relative to an existing surface. The x and y
454 arguments specify the locations of the upper left corner of
455 the surface relative to the upper left corner of the parent
456 surface. The flags argument controls overflow/clipping
457 behaviour when the surface would intersect a screen edge,
458 panel or such. And possibly whether the offset only
459 determines the initial position or if the surface is locked to
460 that relative position during moves.
463 <arg name="parent" type="object" interface="wl_shell_surface"/>
464 <arg name="x" type="int"/>
465 <arg name="y" type="int"/>
466 <arg name="flags" type="uint"/>
469 <request name="set_fullscreen">
470 <description summary="make the surface a fullscreen surface">
471 Map the surface as a fullscreen surface. If an output parameter is
472 given then the surface will be made fullscreen on that output. If the
473 client does not specify the output then the compositor will apply its
474 policy - usually choosing the output on which the surface has the
475 biggest surface area.
477 The client may specify a method to resolve a size conflict between the
478 output size and the surface size - this is provided through the
479 fullscreen_method parameter.
481 The framerate parameter is used only when the fullscreen_method is set
482 to "driver", to indicate the preferred framerate. framerate=0 indicates
483 that the app does not care about framerate.
485 The compositor must reply to this request with a configure event with
486 the dimensions for the output on which the surface will be made fullscreen.
488 <arg name="method" type="uint"/>
489 <arg name="framerate" type="uint"/>
490 <arg name="output" type="object" interface="wl_output"/>
493 <enum name="fullscreen_method">
494 <description summary="different method to set the surface fullscreen">
495 Hints to indicate compositor how to deal with a conflict between the
496 dimensions for the surface and the dimensions of the output. As a hint
497 the compositor is free to ignore this parameter.
499 "default" The client has no preference on fullscreen behavior,
500 policies are determined by compositor.
502 "scale" The client prefers scaling by the compositor. Scaling would
503 always preserve surface's aspect ratio with surface centered on the
506 "driver" The client wants to switch video mode to the smallest mode
507 that can fit the client buffer. If the sizes do not match the
508 compositor must add black borders.
510 "fill" The surface is centered on the output on the screen with no
511 scaling. If the surface is of insufficient size the compositor must
514 <entry name="default" value="0"/>
515 <entry name="scale" value="1"/>
516 <entry name="driver" value="2"/>
517 <entry name="fill" value="3"/>
520 <request name="set_popup">
521 <description summary="make the surface a popup surface">
522 Popup surfaces. Will switch an implicit grab into
523 owner-events mode, and grab will continue after the implicit
524 grab ends (button released). Once the implicit grab is over,
525 the popup grab continues until the window is destroyed or a
526 mouse button is pressed in any other clients window. A click
527 in any of the clients surfaces is reported as normal, however,
528 clicks in other clients surfaces will be discarded and trigger
531 TODO: Grab keyboard too, maybe just terminate on any click
532 inside or outside the surface?
535 <arg name="input_device" type="object" interface="wl_input_device"/>
536 <arg name="serial" type="uint"/>
537 <arg name="parent" type="object" interface="wl_shell_surface"/>
538 <arg name="x" type="int"/>
539 <arg name="y" type="int"/>
540 <arg name="flags" type="uint"/>
543 <request name="set_maximized">
544 <description summary="make the surface a maximized surface">
545 A request from the client to notify the compositor the maximized
546 operation. The compositor will reply with a configure event telling
547 the expected new surface size. The operation is completed on the
548 next buffer attach to this surface.
549 A maximized client will fill the fullscreen of the output it is bound
550 to, except the panel area. This is the main difference between
551 a maximized shell surface and a fullscreen shell surface.
553 <arg name="output" type="object" interface="wl_output"/>
556 <event name="configure">
557 <description summary="suggest resize">
558 The configure event asks the client to resize its surface.
559 The size is a hint, in the sense that the client is free to
560 ignore it if it doesn't resize, pick a smaller size (to
561 satisfy aspect ration or resize in steps of NxM pixels). The
562 client is free to dismiss all but the last configure event it
566 <arg name="edges" type="uint"/>
567 <arg name="width" type="int"/>
568 <arg name="height" type="int"/>
571 <event name="popup_done">
572 <description summary="popup interaction is done">
573 The popup_done event is sent out when a popup grab is broken,
574 that is, when the users clicks a surface that doesn't belong
575 to the client owning the popup surface.
580 <interface name="wl_surface" version="1">
581 <description summary="an onscreen surface">
582 A surface. This is an image that is displayed on the screen.
583 It has a location, size and pixel contents.
586 <request name="destroy" type="destructor">
587 <description summary="delete surface">
588 Deletes the surface and invalidates its object id.
592 <request name="attach">
593 <description summary="set the surface contents">
594 Copy the contents of a buffer into this surface. The x and y
595 arguments specify the location of the new buffers upper left
596 corner, relative to the old buffers upper left corner.
599 <arg name="buffer" type="object" interface="wl_buffer"/>
600 <arg name="x" type="int"/>
601 <arg name="y" type="int"/>
604 <request name="damage">
605 <description summary="mark part of the surface damaged">
606 After attaching a new buffer, this request is used to describe
607 the regions where the new buffer is different from the
608 previous buffer and needs to be repainted. Coordinates are
609 relative to the new buffer.
612 <arg name="x" type="int"/>
613 <arg name="y" type="int"/>
614 <arg name="width" type="int"/>
615 <arg name="height" type="int"/>
618 <request name="frame">
619 <description summary="request repaint feedback">
620 Request notification when the next frame is displayed. Useful
621 for throttling redrawing operations, and driving animations.
622 The notification will only be posted for one frame unless
626 <arg name="callback" type="new_id" interface="wl_callback"/>
629 <request name="set_opaque_region">
630 <description summary="set opaque region">
631 This requests sets the region of the surface that contain
632 opaque content. The opaque region is an optimization hint for
633 the compositor that lets it optimize out redrawing of content
634 behind opaque regions. Setting an opaque region is not
635 required for correct behaviour, but marking transparent
636 content as opaque will result in repaint artifacts.
638 The region will be clipped to the extents of the current
639 surface size. Setting the region has copy semantics, and the
640 region object can be destroyed immediately after setting the
641 opaque region. If a buffer of a different size is attached or
642 if a nil region is set, the opaque region will revert back to
643 default. The default opaque region is empty.
646 <arg name="region" type="object" interface="wl_region"/>
649 <request name="set_input_region">
650 <description summary="set input region">
651 This requests sets the region of the surface that can receive
652 pointer and touch events. The region will be clipped to the
653 extents of the current surface size. Setting the region has
654 copy semantics, and the region object can be destroyed
655 immediately after setting the input region. If a buffer of a
656 different size is attached or if a nil region is passed, the
657 input region will revert back to default. The default input
658 region is the entire surface.
661 <arg name="region" type="object" interface="wl_region"/>
665 <description summary="surface enters an output">
666 This is emitted whenever a surface's creation, movement, or resizing
667 results in some part of it being within the scanout region of an
670 <arg name="output" type="object" interface="wl_output"/>
674 <description summary="surface leaves an output">
675 This is emitted whenever a surface's creation, movement, or resizing
676 results in it no longer having any part of it within the scanout region
679 <arg name="output" type="object" interface="wl_output"/>
683 <interface name="wl_input_device" version="1">
684 <description summary="input device group">
685 A group of keyboards and pointer devices (mice, for
686 example). This object is published as a global during start up,
687 or when such a device is hot plugged. A input_device group
688 typically has a pointer and maintains a keyboard_focus and a
692 <request name="attach">
693 <description summary="set the pointer image">
694 Set the pointer's image. This request only takes effect if
695 the pointer focus for this device is one of the requesting
699 <arg name="serial" type="uint"/>
700 <arg name="buffer" type="object" interface="wl_buffer"/>
701 <arg name="hotspot_x" type="int"/>
702 <arg name="hotspot_y" type="int"/>
705 <event name="motion">
706 <description summary="pointer motion event">
707 Notification of pointer location change. The arguments surface_[xy]
708 are the location relative to the focused surface.
711 <arg name="time" type="uint"/>
712 <arg name="surface_x" type="int"/>
713 <arg name="surface_y" type="int"/>
716 <event name="button">
717 <description summary="pointer button event">
718 Mouse button click and release notifications. The location
719 of the click is given by the last motion or pointer_focus event.
722 <arg name="serial" type="uint"/>
723 <arg name="time" type="uint"/>
724 <arg name="button" type="uint"/>
725 <arg name="state" type="uint"/>
729 <description summary="axis types"/>
730 <entry name="vertical_scroll" value="0"/>
731 <entry name="horizontal_scroll" value="1"/>
735 <description summary="axis event">
736 Scroll and other axis notifications.
739 <arg name="time" type="uint"/>
740 <arg name="axis" type="uint"/>
741 <arg name="value" type="int"/>
745 <description summary="key event">
746 A key was pressed or released.
749 <arg name="serial" type="uint"/>
750 <arg name="time" type="uint"/>
751 <arg name="key" type="uint"/>
752 <arg name="state" type="uint"/>
755 <event name="pointer_enter">
756 <description summary="pointer enter event">
757 Notification that this input device's pointer is focused on
758 certain surface. When an input_device enters a surface, the
759 pointer image is undefined and a client should respond to this
760 event by setting an appropriate pointer image.
763 <arg name="serial" type="uint"/>
764 <arg name="surface" type="object" interface="wl_surface"/>
765 <arg name="surface_x" type="int"/>
766 <arg name="surface_y" type="int"/>
769 <event name="pointer_leave">
770 <description summary="pointer leave event">
772 <arg name="serial" type="uint"/>
773 <arg name="surface" type="object" interface="wl_surface"/>
776 <event name="keyboard_enter">
777 <arg name="serial" type="uint"/>
778 <arg name="surface" type="object" interface="wl_surface"/>
779 <arg name="keys" type="array"/>
782 <event name="keyboard_leave">
783 <arg name="serial" type="uint"/>
784 <arg name="surface" type="object" interface="wl_surface"/>
787 <event name="touch_down">
788 <arg name="serial" type="uint"/>
789 <arg name="time" type="uint"/>
790 <arg name="surface" type="object" interface="wl_surface"/>
791 <arg name="id" type="int" />
792 <arg name="x" type="int" />
793 <arg name="y" type="int" />
796 <event name="touch_up">
797 <arg name="serial" type="uint"/>
798 <arg name="time" type="uint"/>
799 <arg name="id" type="int" />
802 <event name="touch_motion">
803 <arg name="time" type="uint"/>
804 <arg name="id" type="int" />
805 <arg name="x" type="int" />
806 <arg name="y" type="int" />
809 <event name="touch_frame">
810 <description summary="end of touch frame event">
811 Indicates the end of a contact point list.
815 <event name="touch_cancel">
816 <description summary="touch session cancelled">
817 Sent if the compositor decides the touch stream is a global
818 gesture. No further events are sent to the clients from that
825 <interface name="wl_output" version="1">
826 <description summary="compositor output region">
827 An output describes part of the compositor geometry. The
828 compositor work in the 'compositor coordinate system' and an
829 output corresponds to rectangular area in that space that is
830 actually visible. This typically corresponds to a monitor that
831 displays part of the compositor space. This object is published
832 as global during start up, or when a screen is hot plugged.
835 <enum name="subpixel">
836 <entry name="unknown" value="0"/>
837 <entry name="none" value="1"/>
838 <entry name="horizontal_rgb" value="2"/>
839 <entry name="horizontal_bgr" value="3"/>
840 <entry name="vertical_rgb" value="4"/>
841 <entry name="vertical_bgr" value="5"/>
844 <event name="geometry">
845 <arg name="x" type="int"/>
846 <arg name="y" type="int"/>
847 <arg name="physical_width" type="int"/>
848 <arg name="physical_height" type="int"/>
849 <arg name="subpixel" type="int"/>
850 <arg name="make" type="string"/>
851 <arg name="model" type="string"/>
855 <description summary="values for the flags bitfield in the mode event"/>
856 <entry name="current" value="0x1"/>
857 <entry name="preferred" value="0x2"/>
861 <arg name="flags" type="uint"/>
862 <arg name="width" type="int"/>
863 <arg name="height" type="int"/>
864 <arg name="refresh" type="int"/>
868 <interface name="wl_region" version="1">
869 <description summary="region interface">
873 <request name="destroy" type="destructor">
874 <description summary="destroy region">
875 Destroy the region. This will invalidate the object id.
880 <description summary="add rectangle to region">
881 Add the specified rectangle to the region
884 <arg name="x" type="int"/>
885 <arg name="y" type="int"/>
886 <arg name="width" type="int"/>
887 <arg name="height" type="int"/>
890 <request name="subtract">
891 <description summary="subtract rectangle from region">
892 Subtract the specified rectangle from the region
895 <arg name="x" type="int"/>
896 <arg name="y" type="int"/>
897 <arg name="width" type="int"/>
898 <arg name="height" type="int"/>