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Corresponds to a text input on input method side. An input method context
is created on text input activation on the input method side. It allows to
receive information about the text input from the application via events.
Input method contexts do not keep state after deactivation and should be
destroyed after deactivation is handled.
Text is generally UTF-8 encoded, indices and lengths are in bytes.
Serials are used to synchronize the state between the text input and
an input method. New serials are sent by the text input in the
commit_state request and are used by the input method to indicate
the known text input state in events like preedit_string, commit_string,
and keysym. The text input can then ignore events from the input method
which are based on an outdated state (for example after a reset).
Send the commit string text for insertion to the application.
The text to commit could be either just a single character after a key
press or the result of some composing (pre-edit). It could be also an
empty text when some text should be removed (see
delete_surrounding_text) or when the input cursor should be moved (see
cursor_position).
Any previously set composing text will be removed.
Send the pre-edit string text to the application text input.
The commit text can be used to replace the preedit text on reset (for
example on unfocus).
Also previously sent preedit_style and preedit_cursor requests are
processed bt the text_input also.
Sets styling information on composing text. The style is applied for
length in bytes from index relative to the beginning of
the composing text (as byte offset). Multiple styles can
be applied to a composing text.
This request should be sent before sending preedit_string request.
Sets the cursor position inside the composing text (as byte offset)
relative to the start of the composing text.
When index is negative no cursor should be displayed.
This request should be sent before sending preedit_string request.
This request will be handled on text_input side as part of a directly
following commit_string request.
Sets the cursor and anchor to a new position. Index is the new cursor
position in bytes (when >= 0 relative to the end of inserted text
else relative to beginning of inserted text). Anchor is the new anchor
position in bytes (when >= 0 relative to the end of inserted text, else
relative to beginning of inserted text). When there should be no
selected text anchor should be the same as index.
This request will be handled on text_input side as part of a directly
following commit_string request.
Notify when a key event was sent. Key events should not be used for
normal text input operations, which should be done with commit_string,
delete_surrounfing_text, etc. The key event follows the wl_keyboard key
event convention. Sym is a XKB keysym, state a wl_keyboard key_state.
Allows an input method to receive hardware keyboard input and process
key events to generate text events (with pre-edit) over the wire. This
allows input methods which compose multiple key events for inputting
text like it is done for CJK languages.
Should be used when filtering key events with grab_keyboard.
When the wl_keyboard::key event is not processed by the input
method itself and should be sent to the client instead, forward it
with this request. The arguments should be the ones from the
wl_keyboard::key event.
For generating custom key events use the keysym request instead.
Should be used when filtering key events with grab_keyboard.
When the wl_keyboard::modifiers event should be also send to the
client, forward it with this request. The arguments should be the ones
from the wl_keyboard::modifiers event.
The plain surrounding text around the input position. Cursor is the
position in bytes within the surrounding text relative to the beginning
of the text. Anchor is the position in bytes of the selection anchor
within the surrounding text relative to the beginning of the text. If
there is no selected text anchor is the same as cursor.
An input method object is responsible to compose text in response to
input from hardware or virtual keyboards. There is one input method
object per seat. On activate there is a new input method context object
created which allows the input method to communicate with the text input.
A text input was activated. Creates an input method context object
which allows communication with the text input.
The text input corresponding to the context argument was deactivated.
The input method context should be destroyed after deactivation is
handled.
Only one client can bind this interface at a time.
A keyboard surface is only shown when a text input is active.
An overlay panel is shown near the input cursor above the application
window when a text input is active.