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="time" 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"/>
131 <interface name="wl_shm" version="1">
132 <description summary="shared memory support">
133 Support for shared memory buffers.
137 <entry name="invalid_format" value="0"/>
138 <entry name="invalid_stride" value="1"/>
139 <entry name="invalid_fd" value="2"/>
143 <entry name="argb8888" value="0"/>
144 <entry name="xrgb8888" value="1"/>
147 <request name="create_buffer">
148 <description summary="create a wl_buffer">
149 Transfer a shm buffer to the server. The allocated buffer
150 would include at least stride * height bytes starting at the
151 beginning of fd. The file descriptor is transferred over the
152 socket using AF_UNIX magical features. width, height, stride
153 and format describe the respective properties of the pixel
154 data contained in the buffer.
157 <arg name="id" type="new_id" interface="wl_buffer"/>
158 <arg name="fd" type="fd"/>
159 <arg name="width" type="int"/>
160 <arg name="height" type="int"/>
161 <arg name="stride" type="uint"/>
162 <arg name="format" type="uint"/>
165 <event name="format">
166 <arg name="format" type="uint"/>
170 <interface name="wl_buffer" version="1">
171 <description summary="content for a wl_surface">
172 A buffer provides the content for a wl_surface. Buffers are
173 created through factory interfaces such as wl_drm, wl_shm or
174 similar. It has a width and a height and can be attached to a
175 wl_surface, but the mechanism by which a client provides and
176 updates the contents is defined by the buffer factory interface
179 <request name="damage">
180 <description summary="mark part of the buffer damaged">
181 Notify the server that the specified area of the buffers
182 contents have changed. To describe a more complicated area of
183 damage, break down the region into rectangles and use this
184 request several times.
187 <arg name="x" type="int"/>
188 <arg name="y" type="int"/>
189 <arg name="width" type="int"/>
190 <arg name="height" type="int"/>
193 <request name="destroy" type="destructor">
194 <description summary="destroy a buffer">
195 Destroy a buffer. This will invalidate the object id.
199 <event name="release">
200 <description summary="compositor releases buffer">
201 Sent when an attached buffer is no longer used by the compositor.
207 <interface name="wl_data_offer" version="1">
208 <request name="accept">
209 <description summary="accept one of the offered mime-types">
210 Indicate that the client can accept the given mime-type, or
211 NULL for not accepted. Use for feedback during drag and drop.
214 <arg name="time" type="uint"/>
215 <arg name="type" type="string"/>
218 <request name="receive">
219 <arg name="mime_type" type="string"/>
220 <arg name="fd" type="fd"/>
223 <request name="destroy" type="destructor"/>
226 <description summary="advertise offered mime-type">
227 Sent immediately after creating the wl_data_offer object. One
228 event per offered mime type.
231 <arg name="type" type="string"/>
235 <interface name="wl_data_source" version="1">
236 <request name="offer">
237 <description summary="add an offered mime type">
238 This request adds a mime-type to the set of mime-types
239 advertised to targets. Can be called several times to offer
242 <arg name="type" type="string"/>
245 <request name="destroy" type="destructor">
246 <description summary="destroy the data source">
247 Destroy the data source.
251 <event name="target">
252 <description summary="a target accepts an offered mime-type">
253 Sent when a target accepts pointer_focus or motion events. If
254 a target does not accept any of the offered types, type is NULL.
257 <arg name="mime_type" type="string"/>
261 <description summary="send the data">
262 Request for data from another client. Send the data as the
263 specified mime-type over the passed fd, then close the fd.
266 <arg name="mime_type" type="string"/>
267 <arg name="fd" type="fd"/>
270 <event name="cancelled">
271 <description summary="selection was cancelled">
272 Another selection became active.
278 <interface name="wl_data_device" version="1">
279 <request name="start_drag">
280 <description summary="start drag and drop operation">
281 This request asks the compositor to start a drag and drop
282 operation on behalf of the client. The source argument is the
283 data source that provides the data for the eventual data
284 transfer. The origin surface is the surface where the drag
285 originates and the client must have an active implicit grab
286 that matches the timestamp. The icon surface is an optional
287 (can be nil) surface that provides an icon to be moved around
288 with the cursor. Initially, the top-left corner of the icon
289 surface is placed at the cursor hotspot, but subsequent
290 surface.attach request can move the relative position.
292 <arg name="source" type="object" interface="wl_data_source"/>
293 <arg name="origin" type="object" interface="wl_surface"/>
294 <arg name="icon" type="object" interface="wl_surface"/>
295 <arg name="time" type="uint"/>
298 <request name="set_selection">
299 <arg name="source" type="object" interface="wl_data_source"/>
300 <arg name="time" type="uint"/>
303 <event name="data_offer">
304 <description summary="introduce a new wl_data_offer">
305 The data_offer event introduces a new wl_data_offer object,
306 which will subsequently be used in either the
307 data_device.enter event (for drag and drop) or the
308 data_device.selection event (for selections). Immediately
309 following the data_device_data_offer event, the new data_offer
310 object will send out data_offer.offer events to describe the
311 mime-types it offers.
314 <arg name="id" type="new_id" interface="wl_data_offer"/>
318 <arg name="time" type="uint"/>
319 <arg name="surface" type="object" interface="wl_surface"/>
320 <arg name="x" type="int"/>
321 <arg name="y" type="int"/>
322 <arg name="id" type="object" interface="wl_data_offer"/>
325 <event name="leave"/>
327 <event name="motion">
328 <arg name="time" type="uint"/>
329 <arg name="x" type="int"/>
330 <arg name="y" type="int"/>
335 <event name="selection">
336 <description summary="advertise new selection">
337 The selection event is sent out to notify the client of a new
338 wl_data_offer for the selection for this device. The
339 data_device.data_offer and the data_offer.offer events are
340 sent out immediately before this event to introduce the data
341 offer object. The selection event is sent to a client
342 immediately before receiving keyboard focus and when a new
343 selection is set while the client has keyboard focus. The
344 data_offer is valid until a new data_offer or NULL is received
345 or until the client loses keyboard focus.
347 <arg name="id" type="object" interface="wl_data_offer"/>
351 <interface name="wl_data_device_manager" version="1">
352 <request name="create_data_source">
353 <arg name="id" type="new_id" interface="wl_data_source"/>
356 <request name="get_data_device">
357 <arg name="id" type="new_id" interface="wl_data_device"/>
358 <arg name="input_device" type="object" interface="wl_input_device"/>
362 <interface name="wl_shell" version="1">
363 <request name="get_shell_surface">
364 <arg name="id" type="new_id" interface="wl_shell_surface"/>
365 <arg name="surface" type="object" interface="wl_surface"/>
369 <interface name="wl_shell_surface" version="1">
371 <description summary="desktop style meta data interface">
372 An interface implemented by a wl_surface. On server side the
373 object is automatically destroyed when the related wl_surface is
374 destroyed. On client side, wl_shell_surface_destroy() must be
375 called before destroying the wl_surface object.
378 <request name="move">
379 <arg name="input_device" type="object" interface="wl_input_device"/>
380 <arg name="time" type="uint"/>
384 <entry name="none" value="0"/>
385 <entry name="top" value="1"/>
386 <entry name="bottom" value="2"/>
387 <entry name="left" value="4"/>
388 <entry name="top_left" value="5"/>
389 <entry name="bottom_left" value="6"/>
390 <entry name="right" value="8"/>
391 <entry name="top_right" value="9"/>
392 <entry name="bottom_right" value="10"/>
395 <request name="resize">
396 <arg name="input_device" type="object" interface="wl_input_device"/>
397 <arg name="time" type="uint"/>
398 <arg name="edges" type="uint"/>
401 <request name="set_toplevel">
402 <description summary="make the surface a top level surface">
403 Make the surface a toplevel window.
407 <request name="set_transient">
408 <description summary="make the surface a transient surface">
409 Map the surface relative to an existing surface. The x and y
410 arguments specify the locations of the upper left corner of
411 the surface relative to the upper left corner of the parent
412 surface. The flags argument controls overflow/clipping
413 behaviour when the surface would intersect a screen edge,
414 panel or such. And possibly whether the offset only
415 determines the initial position or if the surface is locked to
416 that relative position during moves.
419 <arg name="parent" type="object" interface="wl_shell_surface"/>
420 <arg name="x" type="int"/>
421 <arg name="y" type="int"/>
422 <arg name="flags" type="uint"/>
425 <request name="set_fullscreen">
426 <description summary="make the surface a fullscreen surface">
427 Map the surface as a fullscreen surface. On the output the
428 surface is assigned to. The client can use different fulllscreen
429 method to fix the size mismatch issue: default, scale, driver
430 and fill. And the framerate parameter is used for "driver" method,
431 to indicate the preferred framerate. framerate=0 means that the
432 app does not care about framerate
434 <arg name="method" type="uint"/>
435 <arg name="framerate" type="uint"/>
436 <arg name="output" type="object" interface="wl_output"/>
439 <enum name="fullscreen_method">
440 <description summary="different method to set the surface fullscreen">
441 Hints to indicate compositor how to deal with this fullscreen surface.
442 "default" means the client has no preference on fullscreen
443 behavior, policies are determined by compositor.
444 "scale" means the client prefers scaling by the compositor.
445 Scaling would always preserve surface's aspect ratio.
446 And the surface is centered.
447 "driver" means the client wants to switch video mode to the
448 smallest mode that can fit the client buffer. If the
449 sizes do not match, black borders are added.
450 "fill" means the client wants to add blackborders to the
451 surface. This would be preferring 1:1 pixel mapping
452 in the monitor native video mode. The surface is
455 <entry name="default" value="0"/>
456 <entry name="scale" value="1"/>
457 <entry name="driver" value="2"/>
458 <entry name="fill" value="3"/>
461 <request name="set_popup">
462 <description summary="make the surface a popup surface">
463 Popup surfaces. Will switch an implicit grab into
464 owner-events mode, and grab will continue after the implicit
465 grab ends (button released). Once the implicit grab is over,
466 the popup grab continues until the window is destroyed or a
467 mouse button is pressed in any other clients window. A click
468 in any of the clients surfaces is reported as normal, however,
469 clicks in other clients surfaces will be discarded and trigger
472 TODO: Grab keyboard too, maybe just terminate on any click
473 inside or outside the surface?
476 <arg name="input_device" type="object" interface="wl_input_device"/>
477 <arg name="time" type="uint"/>
478 <arg name="parent" type="object" interface="wl_shell_surface"/>
479 <arg name="x" type="int"/>
480 <arg name="y" type="int"/>
481 <arg name="flags" type="uint"/>
484 <request name="set_maximized">
485 <description summary="make the surface a maximized surface">
486 A request from the client to notify the compositor the maximized
487 operation. The compositor will reply with a configure event telling
488 the expected new surface size. The operation is completed on the
489 next buffer attach to this surface.
490 A maximized client will fill the fullscreen of the output it is bound
491 to, except the panel area. This is the main difference between
492 a maximized shell surface and a fullscreen shell surface.
494 <arg name="output" type="object" interface="wl_output"/>
497 <event name="configure">
498 <description summary="suggest resize">
499 The configure event asks the client to resize its surface.
500 The size is a hint, in the sense that the client is free to
501 ignore it if it doesn't resize, pick a smaller size (to
502 satisfy aspect ration or resize in steps of NxM pixels). The
503 client is free to dismiss all but the last configure event it
507 <arg name="time" type="uint"/>
508 <arg name="edges" type="uint"/>
509 <arg name="width" type="int"/>
510 <arg name="height" type="int"/>
513 <event name="popup_done">
514 <description summary="popup interaction is done">
515 The popup_done event is sent out when a popup grab is broken,
516 that is, when the users clicks a surface that doesn't belong
517 to the client owning the popup surface.
522 <interface name="wl_surface" version="1">
523 <description summary="an onscreen surface">
524 A surface. This is an image that is displayed on the screen.
525 It has a location, size and pixel contents.
528 <request name="destroy" type="destructor">
529 <description summary="delete surface">
530 Deletes the surface and invalidates its object id.
534 <request name="attach">
535 <description summary="set the surface contents">
536 Copy the contents of a buffer into this surface. The x and y
537 arguments specify the location of the new buffers upper left
538 corner, relative to the old buffers upper left corner.
541 <arg name="buffer" type="object" interface="wl_buffer"/>
542 <arg name="x" type="int"/>
543 <arg name="y" type="int"/>
546 <request name="damage">
547 <description summary="mark part of the surface damaged">
548 After attaching a new buffer, this request is used to describe
549 the regions where the new buffer is different from the
550 previous buffer and needs to be repainted. Coordinates are
551 relative to the new buffer.
554 <arg name="x" type="int"/>
555 <arg name="y" type="int"/>
556 <arg name="width" type="int"/>
557 <arg name="height" type="int"/>
560 <request name="frame">
561 <description summary="request repaint feedback">
562 Request notification when the next frame is displayed. Useful
563 for throttling redrawing operations, and driving animations.
564 The notification will only be posted for one frame unless
568 <arg name="callback" type="new_id" interface="wl_callback"/>
573 <interface name="wl_input_device" version="1">
574 <description summary="input device group">
575 A group of keyboards and pointer devices (mice, for
576 example). This object is published as a global during start up,
577 or when such a device is hot plugged. A input_device group
578 typically has a pointer and maintains a keyboard_focus and a
582 <request name="attach">
583 <description summary="set the pointer image">
584 Set the pointer's image. This request only takes effect if
585 the pointer focus for this device is one of the requesting
589 <arg name="time" type="uint"/>
590 <arg name="buffer" type="object" interface="wl_buffer"/>
591 <arg name="hotspot_x" type="int"/>
592 <arg name="hotspot_y" type="int"/>
595 <event name="motion">
596 <description summary="pointer motion event">
597 Notification of pointer location change. The arguments surface_[xy]
598 are the location relative to the focused surface.
601 <arg name="time" type="uint"/>
602 <arg name="surface_x" type="int"/>
603 <arg name="surface_y" type="int"/>
606 <event name="button">
607 <description summary="pointer button event">
608 Mouse button click and release notifications. The location
609 of the click is given by the last motion or pointer_focus event.
612 <arg name="time" type="uint"/>
613 <arg name="button" type="uint"/>
614 <arg name="state" type="uint"/>
618 <description summary="key event">
619 A key was pressed or released.
622 <arg name="time" type="uint"/>
623 <arg name="key" type="uint"/>
624 <arg name="state" type="uint"/>
627 <event name="pointer_enter">
628 <description summary="pointer enter event">
629 Notification that this input device's pointer is focused on
630 certain surface. When an input_device enters a surface, the
631 pointer image is undefined and a client should respond to this
632 event by setting an appropriate pointer image.
635 <arg name="time" type="uint"/>
636 <arg name="surface" type="object" interface="wl_surface"/>
637 <arg name="surface_x" type="int"/>
638 <arg name="surface_y" type="int"/>
641 <event name="pointer_leave">
642 <description summary="pointer leave event">
644 <arg name="time" type="uint"/>
645 <arg name="surface" type="object" interface="wl_surface"/>
648 <event name="keyboard_enter">
649 <arg name="time" type="uint"/>
650 <arg name="surface" type="object" interface="wl_surface"/>
651 <arg name="keys" type="array"/>
654 <event name="keyboard_leave">
655 <arg name="time" type="uint"/>
656 <arg name="surface" type="object" interface="wl_surface"/>
659 <event name="touch_down">
660 <arg name="time" type="uint"/>
661 <arg name="surface" type="object" interface="wl_surface"/>
662 <arg name="id" type="int" />
663 <arg name="x" type="int" />
664 <arg name="y" type="int" />
667 <event name="touch_up">
668 <arg name="time" type="uint"/>
669 <arg name="id" type="int" />
672 <event name="touch_motion">
673 <arg name="time" type="uint"/>
674 <arg name="id" type="int" />
675 <arg name="x" type="int" />
676 <arg name="y" type="int" />
679 <event name="touch_frame">
680 <description summary="end of touch frame event">
681 Indicates the end of a contact point list.
685 <event name="touch_cancel">
686 <description summary="touch session cancelled">
687 Sent if the compositor decides the touch stream is a global
688 gesture. No further events are sent to the clients from that
695 <interface name="wl_output" version="1">
696 <description summary="compositor output region">
697 An output describes part of the compositor geometry. The
698 compositor work in the 'compositor coordinate system' and an
699 output corresponds to rectangular area in that space that is
700 actually visible. This typically corresponds to a monitor that
701 displays part of the compositor space. This object is published
702 as global during start up, or when a screen is hot plugged.
705 <enum name="subpixel">
706 <entry name="unknown" value="0"/>
707 <entry name="none" value="1"/>
708 <entry name="horizontal_rgb" value="2"/>
709 <entry name="horizontal_bgr" value="3"/>
710 <entry name="vertical_rgb" value="4"/>
711 <entry name="vertical_bgr" value="5"/>
714 <event name="geometry">
715 <arg name="x" type="int"/>
716 <arg name="y" type="int"/>
717 <arg name="physical_width" type="int"/>
718 <arg name="physical_height" type="int"/>
719 <arg name="subpixel" type="int"/>
720 <arg name="make" type="string"/>
721 <arg name="model" type="string"/>
725 <description summary="values for the flags bitfield in the mode event"/>
726 <entry name="current" value="0x1"/>
727 <entry name="preferred" value="0x2"/>
731 <arg name="flags" type="uint"/>
732 <arg name="width" type="int"/>
733 <arg name="height" type="int"/>
734 <arg name="refresh" type="int"/>