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\n 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 <!-- The core global object. This is a special singleton object.
31 It is used for internal wayland protocol features. -->
32 <interface name="wl_display" version="1">
33 <description summary="core global object">
34 The core global object. This is a special singleton object.
35 It is used for internal wayland protocol features.
38 <description summary="bind an object to the display">
40 <arg name="name" type="uint"/>
41 <arg name="interface" type="string"/>
42 <arg name="version" type="uint"/>
43 <arg name="id" type="new_id" interface="wl_object"/>
46 <!-- sync is an just an echo, which will reply with a key event.
47 Since requests are handled in-order, this can be used as a
48 barrier to ensure all previous requests have been handled.
49 The key argument can be used to correlate between multiple
52 <arg name="callback" type="new_id" interface="wl_callback"/>
55 <!-- A fatal error has occurred. -->
57 <arg name="object_id" type="object" interface="wl_object"/>
58 <arg name="code" type="uint"/>
59 <arg name="message" type="string"/>
63 <description summary="global error values">
64 These errors are global and can be emitted in response to any
67 <entry name="invalid_object" value="0"
68 summary="server couldn't find object"/>
69 <entry name="invalid_method" value="1"
70 summary="method doesn't exist on the specified interface"/>
71 <entry name="no_memory" value="2"
72 summary="server is out of memory"/>
75 <!-- Notify the client of global objects. These are objects that
76 are created by the server. Globals are published on the
77 initial client connection sequence, upon device hotplugs,
78 device disconnects, reconfiguration or other events. The
79 server will always announce an object before the object sends
82 <arg name="name" type="uint"/>
83 <arg name="interface" type="string"/>
84 <arg name="version" type="uint"/>
87 <!-- Notify the client of removed global objects. -->
88 <event name="global_remove">
89 <arg name="name" type="uint" />
92 <!-- Server has deleted the id and client can now reuse it. -->
93 <event name="delete_id">
94 <arg name="id" type="uint" />
98 <interface name="wl_callback" version="1">
100 <arg name="time" type="uint"/>
104 <!-- A compositor. This object is a global. The compositor is in
105 charge of combining the contents of multiple surfaces into one
106 displayable output. -->
107 <interface name="wl_compositor" version="1">
108 <!-- Factory request for a surface objects. A surface is akin to a
110 <request name="create_surface">
111 <arg name="id" type="new_id" interface="wl_surface"/>
115 <!-- Shared memory support -->
116 <interface name="wl_shm" version="1">
118 <entry name="invalid_format" value="0"/>
119 <entry name="invalid_stride" value="1"/>
120 <entry name="invalid_fd" value="2"/>
124 <entry name="argb8888" value="0"/>
125 <entry name="xrgb8888" value="1"/>
128 <!-- Transfer a shm buffer to the server. The allocated buffer
129 would include at least stride * height bytes starting at the
130 beginning of fd. The file descriptor is transferred over the
131 socket using AF_UNIX magical features. width, height, stride
132 and format describe the respective properties of the pixel
133 data contained in the buffer. -->
134 <request name="create_buffer">
135 <arg name="id" type="new_id" interface="wl_buffer"/>
136 <arg name="fd" type="fd"/>
137 <arg name="width" type="int"/>
138 <arg name="height" type="int"/>
139 <arg name="stride" type="uint"/>
140 <arg name="format" type="uint"/>
143 <event name="format">
144 <arg name="format" type="uint"/>
149 <!-- A pixel buffer. Created using the drm, shm or similar objects.
150 It has a size, visual and contents, but not a location on the
152 <interface name="wl_buffer" version="1">
153 <!-- Notify the server that the specified area of the buffers
154 contents have changed. To describe a more complicated area
155 of damage, break down the region into rectangles and use this
156 request several times.
158 <request name="damage">
159 <arg name="x" type="int"/>
160 <arg name="y" type="int"/>
161 <arg name="width" type="int"/>
162 <arg name="height" type="int"/>
165 <!-- Destroy a buffer. This will invalidate the object id. -->
166 <request name="destroy" type="destructor"/>
168 <!-- Sent when an attached buffer is no longer used by the compositor. -->
169 <event name="release"/>
173 <interface name="wl_data_offer" version="1">
174 <!-- Indicate that the client can accept the given mime-type, or
175 NULL for not accepted. Use for feedback during drag and
177 <request name="accept">
178 <arg name="time" type="uint"/>
179 <arg name="type" type="string"/>
182 <request name="receive">
183 <arg name="mime_type" type="string"/>
184 <arg name="fd" type="fd"/>
187 <request name="destroy" type="destructor"/>
189 <!-- Sent immediately after creating the wl_data_offer object. One
190 event per offered mime type. -->
192 <arg name="type" type="string"/>
196 <interface name="wl_data_source" version="1">
197 <!-- Add an offered mime type. Can be called several times to
198 offer multiple types. -->
199 <request name="offer">
200 <arg name="type" type="string"/>
203 <!-- Destroy the selection. -->
204 <request name="destroy" type="destructor"/>
206 <!-- Sent when a target accepts pointer_focus or motion events.
207 If a target does not accept any of the offered types, type is
209 <event name="target">
210 <arg name="mime_type" type="string"/>
213 <!-- Request for data from another client. Send the data in the
214 specified mime-type over the passed fd, the close it. -->
216 <arg name="mime_type" type="string"/>
217 <arg name="fd" type="fd"/>
220 <!-- Another selection became active. -->
221 <event name="cancelled"/>
224 <interface name="wl_data_device" version="1">
225 <request name="start_drag">
226 <arg name="source" type="object" interface="wl_data_source"/>
227 <arg name="surface" type="object" interface="wl_surface"/>
228 <arg name="time" type="uint"/>
231 <request name="attach">
232 <arg name="time" type="uint"/>
233 <arg name="buffer" type="object" interface="wl_buffer"/>
234 <arg name="x" type="int"/>
235 <arg name="y" type="int"/>
238 <request name="set_selection">
239 <arg name="source" type="object" interface="wl_data_source"/>
240 <arg name="time" type="uint"/>
243 <!-- The data_offer event introduces a new wl_data_offer object,
244 which will subsequently be used in either the
245 data_device.enter event (for drag and drop) or the
246 data_device.selection event (for selections). Immediately
247 following the data_device_data_offer event, the new
248 data_offer object will send out data_offer.offer events to
249 describe the mime-types it offers. -->
250 <event name="data_offer">
251 <arg name="id" type="new_id" interface="wl_data_offer"/>
255 <arg name="time" type="uint"/>
256 <arg name="surface" type="object" interface="wl_surface"/>
257 <arg name="x" type="int"/>
258 <arg name="y" type="int"/>
259 <arg name="id" type="object" interface="wl_data_offer"/>
262 <event name="leave"/>
264 <event name="motion">
265 <arg name="time" type="uint"/>
266 <arg name="x" type="int"/>
267 <arg name="y" type="int"/>
272 <!-- The selection event is sent out to notify the client of a new
273 wl_data_offer for the selection for this device. The
274 data_device.data_offer and the data_offer.offer events are
275 sent out immediately before this event to introduce the data
276 offer object. The selection event is sent to a client
277 immediately before receiving keyboard focus and when a new
278 selection is set while the client has keyboard focus. The
279 data_offer is valid until a new data_offer or NULL is
280 received or until the client loses keyboard focus. -->
281 <event name="selection">
282 <arg name="id" type="object" interface="wl_data_offer"/>
286 <interface name="wl_data_device_manager" version="1">
287 <request name="create_data_source">
288 <arg name="id" type="new_id" interface="wl_data_source"/>
291 <request name="get_data_device">
292 <arg name="id" type="new_id" interface="wl_data_device"/>
293 <arg name="input_device" type="object" interface="wl_input_device"/>
297 <interface name="wl_shell" version="1">
298 <request name="get_shell_surface">
299 <arg name="id" type="new_id" interface="wl_shell_surface"/>
300 <arg name="surface" type="object" interface="wl_surface"/>
304 <!-- A wrapper interface for shell related actions on a wl_surface.
305 On server side the object is automatically destroyed when the
306 related wl_surface is destroyed.
307 On client side, wl_shell_surface_destroy() must be called
308 before destroying the wl_surface object. -->
309 <interface name="wl_shell_surface" version="1">
310 <request name="move">
311 <arg name="input_device" type="object" interface="wl_input_device"/>
312 <arg name="time" type="uint"/>
316 <entry name="none" value="0"/>
317 <entry name="top" value="1"/>
318 <entry name="bottom" value="2"/>
319 <entry name="left" value="4"/>
320 <entry name="top_left" value="5"/>
321 <entry name="bottom_left" value="6"/>
322 <entry name="right" value="8"/>
323 <entry name="top_right" value="9"/>
324 <entry name="bottom_right" value="10"/>
327 <request name="resize">
328 <arg name="input_device" type="object" interface="wl_input_device"/>
329 <arg name="time" type="uint"/>
330 <!-- edges is an enum, need to get the values in here -->
331 <arg name="edges" type="uint"/>
334 <!-- Make the surface visible as a toplevel window. -->
335 <request name="set_toplevel"/>
337 <!-- Map the surface relative to an existing surface. The x and y
338 arguments specify the locations of the upper left corner of
339 the surface relative to the upper left corner of the parent
340 surface. The flags argument controls overflow/clipping
341 behaviour when the surface would intersect a screen edge,
342 panel or such. And possibly whether the offset only
343 determines the initial position or if the surface is locked
344 to that relative position during moves. -->
345 <request name="set_transient">
346 <arg name="parent" type="object" interface="wl_shell_surface"/>
347 <arg name="x" type="int"/>
348 <arg name="y" type="int"/>
349 <arg name="flags" type="uint"/>
352 <!-- Map the surface as a fullscreen surface. There are a number
353 of options here: on which output? if the surface size doesn't
354 match the output size, do we scale, change resolution, or add
355 black borders? is that something the client controls? what
356 about transient surfaces, do they float on top of the
357 fullscreen? what if there's already a fullscreen surface on
358 the output, maybe you can only go fullscreen if you're
360 <request name="set_fullscreen"/>
362 <!-- Popup surfaces. Will switch an implicit grab into
363 owner-events mode, and grab will continue after the implicit
364 grab ends (button released). Once the implicit grab is over,
365 the popup grab continues until the window is destroyed or a
366 mouse button is pressed in any other clients window. A click
367 in any of the clients surfaces is reported as normal,
368 however, clicks in other clients surfaces will be discarded
369 and trigger the callback.
371 TODO: Grab keyboard too, maybe just terminate on any click
372 inside or outside the surface?
374 <request name="set_popup">
375 <arg name="input_device" type="object" interface="wl_input_device"/>
376 <arg name="time" type="uint"/>
377 <arg name="parent" type="object" interface="wl_shell_surface"/>
378 <arg name="x" type="int"/>
379 <arg name="y" type="int"/>
380 <arg name="flags" type="uint"/>
383 <!-- The configure event asks the client to resize its surface.
384 The size is a hint, in the sense that the client is free to
385 ignore it if it doesn't resize, pick a smaller size (to
386 satisfy aspect ration or resize in steps of NxM pixels). The
387 client is free to dismiss all but the last configure event it
389 <event name="configure">
390 <arg name="time" type="uint"/>
391 <arg name="edges" type="uint"/>
392 <arg name="width" type="int"/>
393 <arg name="height" type="int"/>
396 <!-- The popup_done event is sent out when a popup grab is broken,
397 that is, when the users clicks a surface that doesn't belong
398 to the client owning the popup surface. -->
399 <event name="popup_done"/>
403 <!-- A surface. This is an image that is displayed on the screen.
404 It has a location, size and pixel contents. Similar to a window. -->
405 <interface name="wl_surface" version="1">
406 <!-- Deletes the surface and invalidates its object id. -->
407 <request name="destroy" type="destructor"/>
409 <!-- Copy the contents of a buffer into this surface. The x and y
410 arguments specify the location of the new buffers upper left
411 corner, relative to the old buffers upper left corner. -->
412 <request name="attach">
413 <arg name="buffer" type="object" interface="wl_buffer"/>
414 <arg name="x" type="int"/>
415 <arg name="y" type="int"/>
418 <!-- After attaching a new buffer, this request is used to
419 describe the regions where the new buffer is different from
420 the previous buffer and needs to be repainted. Coordinates
421 are relative to the new buffer. -->
422 <request name="damage">
423 <arg name="x" type="int"/>
424 <arg name="y" type="int"/>
425 <arg name="width" type="int"/>
426 <arg name="height" type="int"/>
429 <!-- Request notification when the next frame is displayed.
430 Useful for throttling redrawing operations, and driving
431 animations. The notification will only be posted for one
432 frame unless requested again. -->
433 <request name="frame">
434 <arg name="callback" type="new_id" interface="wl_callback"/>
440 <!-- A group of keyboards and pointer devices (mice, for
441 example). This object is published as a global during start up,
442 or when such a device is hot plugged. A input_device group
443 typically has a pointer and maintains a keyboard_focus and a
445 <interface name="wl_input_device" version="1">
446 <!-- Set the pointer's image. This request only takes effect if
447 the pointer focus for this device is one of the requesting
448 clients surfaces. -->
449 <request name="attach">
450 <arg name="time" type="uint"/>
451 <arg name="buffer" type="object" interface="wl_buffer"/>
452 <arg name="hotspot_x" type="int"/>
453 <arg name="hotspot_y" type="int"/>
456 <!-- Notification of pointer location change.
457 x,y are the absolute location on the screen.
458 surface_[xy] are the location relative to the focused surface. -->
459 <event name="motion">
460 <arg name="time" type="uint"/>
461 <arg name="x" type="int"/>
462 <arg name="y" type="int"/>
463 <arg name="surface_x" type="int"/>
464 <arg name="surface_y" type="int"/>
467 <!-- Mouse button click and release notifications. The location
468 of the click is given by the last motion or pointer_focus
470 <event name="button">
471 <arg name="time" type="uint"/>
472 <arg name="button" type="uint"/>
473 <arg name="state" type="uint"/>
476 <!-- Keyboard press. -->
478 <arg name="time" type="uint"/>
479 <arg name="key" type="uint"/>
480 <arg name="state" type="uint"/>
483 <!-- Notification that this input device's pointer is focused on
484 certain surface. When an input_device enters a surface, the
485 pointer image is undefined and a client should respond to
486 this event by setting an apropriate pointer image. -->
487 <event name="pointer_focus">
488 <arg name="time" type="uint"/>
489 <arg name="surface" type="object" interface="wl_surface"/>
490 <arg name="x" type="int"/>
491 <arg name="y" type="int"/>
492 <arg name="surface_x" type="int"/>
493 <arg name="surface_y" type="int"/>
496 <event name="keyboard_focus">
497 <arg name="time" type="uint"/>
498 <arg name="surface" type="object" interface="wl_surface"/>
499 <arg name="keys" type="array"/>
502 <event name="touch_down">
503 <arg name="time" type="uint"/>
504 <arg name="surface" type="object" interface="wl_surface"/>
505 <arg name="id" type="int" />
506 <arg name="x" type="int" />
507 <arg name="y" type="int" />
510 <event name="touch_up">
511 <arg name="time" type="uint"/>
512 <arg name="id" type="int" />
515 <event name="touch_motion">
516 <arg name="time" type="uint"/>
517 <arg name="id" type="int" />
518 <arg name="x" type="int" />
519 <arg name="y" type="int" />
522 <!-- Indicates the end of a contact point list. -->
523 <event name="touch_frame"/>
525 <!-- Sent if the compositor decides the touch stream is a global
526 gesture. No further events are sent to the clients from that
527 particular gesture. -->
528 <event name="touch_cancel"/>
532 <!-- An output describes part of the compositor geometry. The
533 compositor work in the 'compositor coordinate system' and an
534 output corresponds to rectangular area in that space that is
535 actually visible. This typically corresponds to a monitor that
536 displays part of the compositor space. This object is
537 published as global during start up, or when a screen is hot
539 <interface name="wl_output" version="1">
541 <enum name="subpixel">
542 <entry name="unknown" value="0"/>
543 <entry name="none" value="1"/>
544 <entry name="horizontal_rgb" value="2"/>
545 <entry name="horizontal_bgr" value="3"/>
546 <entry name="vertical_rgb" value="4"/>
547 <entry name="vertical_bgr" value="5"/>
550 <event name="geometry">
551 <arg name="x" type="int"/>
552 <arg name="y" type="int"/>
553 <arg name="physical_width" type="int"/>
554 <arg name="physical_height" type="int"/>
555 <arg name="subpixel" type="int"/>
556 <arg name="make" type="string"/>
557 <arg name="model" type="string"/>
560 <!-- Values for the flags bitfield of the mode event. -->
562 <entry name="current" value="0x1"/>
563 <entry name="preferred" value="0x2"/>
567 <arg name="flags" type="uint"/>
568 <arg name="width" type="int"/>
569 <arg name="height" type="int"/>
570 <arg name="refresh" type="int"/>