1 <?xml version="1.0" encoding="UTF-8"?>
2 <protocol name="input_method">
4 Copyright © 2012, 2013 Intel Corporation
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7 software and its documentation for any purpose is hereby granted
8 without fee, provided that the above copyright notice appear in
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15 purpose. It is provided "as is" without express or implied
18 THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS
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20 FITNESS, IN NO EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY
21 SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
22 WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN
23 AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION,
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29 <interface name="wl_input_method_context" version="1">
30 <description summary="input method context">
31 Corresponds to a text model on input method side. An input method context
32 is created on text mode activation on the input method side. It allows to
33 receive information about the text model from the application via events.
34 Input method contexts do not keep state after deactivation and should be
35 destroyed after deactivation is handled.
37 Text is generally UTF-8 encoded, indices and lengths are in bytes.
39 Serials are used to synchronize the state between the text input and
40 an input method. New serials are sent by the text input in the
41 commit_state request and are used by the input method to indicate
42 the known text input state in events like preedit_string, commit_string,
43 and keysym. The text input can then ignore events from the input method
44 which are based on an outdated state (for example after a reset).
46 <request name="destroy" type="destructor"/>
47 <request name="commit_string">
48 <description summary="commit string">
49 Send the commit string text for insertion to the application.
51 The text to commit could be either just a single character after a key
52 press or the result of some composing (pre-edit). It could be also an
53 empty text when some text should be removed (see
54 delete_surrounding_text) or when the input cursor should be moved (see
57 Any previously set composing text will be removed.
59 <arg name="serial" type="uint" summary="serial of the latest known text input state"/>
60 <arg name="text" type="string"/>
62 <request name="preedit_string">
63 <description summary="pre-edit string">
64 Send the pre-edit string text to the application text input.
66 The commit text can be used to replace the preedit text on reset (for
69 Also previously sent preedit_style and preedit_cursor requests are
70 processed bt the text_input also.
72 <arg name="serial" type="uint" summary="serial of the latest known text input state"/>
73 <arg name="text" type="string"/>
74 <arg name="commit" type="string"/>
76 <request name="preedit_styling">
77 <description summary="pre-edit styling">
78 Sets styling information on composing text. The style is applied for
79 length in bytes from index relative to the beginning of
80 the composing text (as byte offset). Multiple styles can
81 be applied to a composing text.
83 This request should be sent before sending preedit_string request.
85 <arg name="index" type="uint"/>
86 <arg name="length" type="uint"/>
87 <arg name="style" type="uint"/>
89 <request name="preedit_cursor">
90 <description summary="pre-edit cursor">
91 Sets the cursor position inside the composing text (as byte offset)
92 relative to the start of the composing text.
94 When index is negative no cursor should be displayed.
96 This request should be sent before sending preedit_string request.
98 <arg name="index" type="int"/>
100 <request name="delete_surrounding_text">
101 <description summary="delete text">
104 This request will be handled on text_input side as part of a directly
105 following commit_string request.
107 <arg name="index" type="int"/>
108 <arg name="length" type="uint"/>
110 <request name="cursor_position">
111 <description summary="set cursor to a new position">
112 Sets the cursor and anchor to a new position. Index is the new cursor
113 position in bytess (when >= 0 relative to the end of inserted text
114 else relative to beginning of inserted text). Anchor is the new anchor
115 position in bytes (when >= 0 relative to the end of inserted text, else
116 relative to beginning of inserted text). When there should be no
117 selected text anchor should be the same as index.
119 This request will be handled on text_input side as part of a directly
120 following commit_string request.
122 <arg name="index" type="int"/>
123 <arg name="anchor" type="int"/>
125 <request name="modifiers_map">
126 <arg name="map" type="array"/>
128 <request name="keysym">
129 <description summary="keysym">
130 Notify when a key event was sent. Key events should not be used for
131 normal text input operations, which should be done with commit_string,
132 delete_surrounfing_text, etc. The key event follows the wl_keyboard key
133 event convention. Sym is a XKB keysym, state a wl_keyboard key_state.
135 <arg name="serial" type="uint" summary="serial of the latest known text input state"/>
136 <arg name="time" type="uint"/>
137 <arg name="sym" type="uint"/>
138 <arg name="state" type="uint"/>
139 <arg name="modifiers" type="uint"/>
141 <request name="grab_keyboard">
142 <description summary="grab hardware keyboard">
143 Allows an input method to receive hardware keyboard input and process
144 key events to generate text events (with pre-edit) over the wire. This
145 allows input methods which compose multiple key events for inputting
146 text like it is done for CJK languages.
148 <arg name="keyboard" type="new_id" interface="wl_keyboard"/>
151 <description summary="forward key event">
152 Should be used when filtering key events with grab_keyboard.
154 When the wl_keyboard::key event is not processed by the input
155 method itself and should be sent to the client instead, forward it
156 with this request. The arguments should be the ones from the
157 wl_keyboard::key event.
159 For generating custom key events use the keysym request instead.
161 <arg name="serial" type="uint" summary="serial from wl_keyboard::key"/>
162 <arg name="time" type="uint" summary="time from wl_keyboard::key"/>
163 <arg name="key" type="uint" summary="key from wl_keyboard::key"/>
164 <arg name="state" type="uint" summary="state from wl_keyboard::key"/>
166 <request name="modifiers">
167 <description summary="forward modifiers event">
168 Should be used when filtering key events with grab_keyboard.
170 When the wl_keyboard::modifiers event should be also send to the
171 client, forward it with this request. The arguments should be the ones
172 from the wl_keyboard::modifiers event.
174 <arg name="serial" type="uint" summary="serial from wl_keyboard::modifiers"/>
175 <arg name="mods_depressed" type="uint" summary="mods_depressed from wl_keyboard::modifiers"/>
176 <arg name="mods_latched" type="uint" summary="mods_latched from wl_keyboard::modifiers"/>
177 <arg name="mods_locked" type="uint" summary="mods_locked from wl_keyboard::modifiers"/>
178 <arg name="group" type="uint" summary="group from wl_keyboard::modifiers"/>
180 <request name="language">
181 <arg name="serial" type="uint" summary="serial of the latest known text input state"/>
182 <arg name="language" type="string"/>
184 <request name="text_direction">
185 <arg name="serial" type="uint" summary="serial of the latest known text input state"/>
186 <arg name="direction" type="uint"/>
188 <event name="surrounding_text">
189 <description summary="surrounding text event">
190 The plain surrounding text around the input position. Cursor is the
191 position in bytes within the surrounding text relative to the beginning
192 of the text. Anchor is the position in bytes of the selection anchor
193 within the surrounding text relative to the beginning of the text. If
194 there is no selected text anchor is the same as cursor.
196 <arg name="text" type="string"/>
197 <arg name="cursor" type="uint"/>
198 <arg name="anchor" type="uint"/>
202 <event name="content_type">
203 <arg name="hint" type="uint"/>
204 <arg name="purpose" type="uint"/>
206 <event name="invoke_action">
207 <arg name="button" type="uint"/>
208 <arg name="index" type="uint"/>
210 <event name="commit_state">
211 <arg name="serial" type="uint" summary="serial of text input state"/>
213 <event name="preferred_language">
214 <arg name="language" type="string"/>
218 <interface name="wl_input_method" version="1">
219 <description summary="input method">
220 An input method object is responsible to compose text in response to
221 input from hardware or virtual keyboards. There is one input method
222 object per seat. On activate there is a new input method context object
223 created which allows the input method to communicate with the text model.
225 <event name="activate">
226 <description summary="activate event">
227 A text model was activated. Creates an input method context object
228 which allows communication with the text model.
230 <arg name="id" type="new_id" interface="wl_input_method_context"/>
232 <event name="deactivate">
233 <description summary="activate event">
234 The text model corresponding to the context argument was deactivated.
235 The input method context should be destroyed after deactivation is
238 <arg name="context" type="object" interface="wl_input_method_context"/>
242 <interface name="wl_input_panel" version="1">
243 <description summary="interface for implementing keyboards">
244 Only one client can bind this interface at a time.
247 <request name="get_input_panel_surface">
248 <arg name="id" type="new_id" interface="wl_input_panel_surface"/>
249 <arg name="surface" type="object" interface="wl_surface"/>
253 <interface name="wl_input_panel_surface" version="1">
254 <enum name="position">
255 <entry name="center_bottom" value="0"/>
258 <request name="set_toplevel">
259 <description summary="set the surface type as a keyboard">
260 A keybaord surface is only shown, when a text model is active
262 <arg name="output" type="object" interface="wl_output"/>
263 <arg name="position" type="uint"/>
266 <request name="set_overlay_panel">
267 <description summary="set the surface type as an overlay panel">
268 An overlay panel is shown near the input cursor above the application
269 window when a text model is active.