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Diffstat (limited to 'src/3rdparty/protocol/text-input-unstable-v3.xml')
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diff --git a/src/3rdparty/protocol/text-input-unstable-v3.xml b/src/3rdparty/protocol/text-input-unstable-v3.xml new file mode 100644 index 000000000..1fae54d7b --- /dev/null +++ b/src/3rdparty/protocol/text-input-unstable-v3.xml @@ -0,0 +1,457 @@ +<?xml version="1.0" encoding="UTF-8"?> + +<protocol name="text_input_unstable_v3"> + <copyright> + Copyright © 2012, 2013 Intel Corporation + Copyright © 2015, 2016 Jan Arne Petersen + Copyright © 2017, 2018 Red Hat, Inc. + Copyright © 2018 Purism SPC + + Permission to use, copy, modify, distribute, and sell this + software and its documentation for any purpose is hereby granted + without fee, provided that the above copyright notice appear in + all copies and that both that copyright notice and this permission + notice appear in supporting documentation, and that the name of + the copyright holders not be used in advertising or publicity + pertaining to distribution of the software without specific, + written prior permission. The copyright holders make no + representations about the suitability of this software for any + purpose. It is provided "as is" without express or implied + warranty. + + THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS + SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND + FITNESS, IN NO EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY + SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES + WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN + AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, + ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF + THIS SOFTWARE. + </copyright> + + <description summary="Protocol for composing text"> + This protocol allows compositors to act as input methods and to send text + to applications. A text input object is used to manage state of what are + typically text entry fields in the application. + + This document adheres to the RFC 2119 when using words like "must", + "should", "may", etc. + + Warning! The protocol described in this file is experimental and + backward incompatible changes may be made. Backward compatible changes + may be added together with the corresponding interface version bump. + Backward incompatible changes are done by bumping the version number in + the protocol and interface names and resetting the interface version. + Once the protocol is to be declared stable, the 'z' prefix and the + version number in the protocol and interface names are removed and the + interface version number is reset. + </description> + + <interface name="zwp_text_input_v3" version="1"> + <description summary="text input"> + The zwp_text_input_v3 interface represents text input and input methods + associated with a seat. It provides enter/leave events to follow the + text input focus for a seat. + + Requests are used to enable/disable the text-input object and set + state information like surrounding and selected text or the content type. + The information about the entered text is sent to the text-input object + via the preedit_string and commit_string events. + + Text is valid UTF-8 encoded, indices and lengths are in bytes. Indices + must not point to middle bytes inside a code point: they must either + point to the first byte of a code point or to the end of the buffer. + Lengths must be measured between two valid indices. + + Focus moving throughout surfaces will result in the emission of + zwp_text_input_v3.enter and zwp_text_input_v3.leave events. The focused + surface must commit zwp_text_input_v3.enable and + zwp_text_input_v3.disable requests as the keyboard focus moves across + editable and non-editable elements of the UI. Those two requests are not + expected to be paired with each other, the compositor must be able to + handle consecutive series of the same request. + + State is sent by the state requests (set_surrounding_text, + set_content_type and set_cursor_rectangle) and a commit request. After an + enter event or disable request all state information is invalidated and + needs to be resent by the client. + </description> + + <request name="destroy" type="destructor"> + <description summary="Destroy the wp_text_input"> + Destroy the wp_text_input object. Also disables all surfaces enabled + through this wp_text_input object. + </description> + </request> + + <request name="enable"> + <description summary="Request text input to be enabled"> + Requests text input on the surface previously obtained from the enter + event. + + This request must be issued every time the active text input changes + to a new one, including within the current surface. Use + zwp_text_input_v3.disable when there is no longer any input focus on + the current surface. + + Clients must not enable more than one text input on the single seat + and should disable the current text input before enabling the new one. + At most one instance of text input may be in enabled state per instance, + Requests to enable the another text input when some text input is active + must be ignored by compositor. + + This request resets all state associated with previous enable, disable, + set_surrounding_text, set_text_change_cause, set_content_type, and + set_cursor_rectangle requests, as well as the state associated with + preedit_string, commit_string, and delete_surrounding_text events. + + The set_surrounding_text, set_content_type and set_cursor_rectangle + requests must follow if the text input supports the necessary + functionality. + + State set with this request is double-buffered. It will get applied on + the next zwp_text_input_v3.commit request, and stay valid until the + next committed enable or disable request. + + The changes must be applied by the compositor after issuing a + zwp_text_input_v3.commit request. + </description> + </request> + + <request name="disable"> + <description summary="Disable text input on a surface"> + Explicitly disable text input on the current surface (typically when + there is no focus on any text entry inside the surface). + + State set with this request is double-buffered. It will get applied on + the next zwp_text_input_v3.commit request. + </description> + </request> + + <request name="set_surrounding_text"> + <description summary="sets the surrounding text"> + Sets the surrounding plain text around the input, excluding the preedit + text. + + The client should notify the compositor of any changes in any of the + values carried with this request, including changes caused by handling + incoming text-input events as well as changes caused by other + mechanisms like keyboard typing. + + If the client is unaware of the text around the cursor, it should not + issue this request, to signify lack of support to the compositor. + + Text is UTF-8 encoded, and should include the cursor position, the + complete selection and additional characters before and after them. + There is a maximum length of wayland messages, so text can not be + longer than 4000 bytes. + + Cursor is the byte offset of the cursor within text buffer. + + Anchor is the byte offset of the selection anchor within text buffer. + If there is no selected text, anchor is the same as cursor. + + If any preedit text is present, it is replaced with a cursor for the + purpose of this event. + + Values set with this request are double-buffered. They will get applied + on the next zwp_text_input_v3.commit request, and stay valid until the + next committed enable or disable request. + + The initial state for affected fields is empty, meaning that the text + input does not support sending surrounding text. If the empty values + get applied, subsequent attempts to change them may have no effect. + </description> + <arg name="text" type="string"/> + <arg name="cursor" type="int"/> + <arg name="anchor" type="int"/> + </request> + + <enum name="change_cause"> + <description summary="text change reason"> + Reason for the change of surrounding text or cursor posision. + </description> + <entry name="input_method" value="0" summary="input method caused the change"/> + <entry name="other" value="1" summary="something else than the input method caused the change"/> + </enum> + + <request name="set_text_change_cause"> + <description summary="indicates the cause of surrounding text change"> + Tells the compositor why the text surrounding the cursor changed. + + Whenever the client detects an external change in text, cursor, or + anchor posision, it must issue this request to the compositor. This + request is intended to give the input method a chance to update the + preedit text in an appropriate way, e.g. by removing it when the user + starts typing with a keyboard. + + cause describes the source of the change. + + The value set with this request is double-buffered. It must be applied + and reset to initial at the next zwp_text_input_v3.commit request. + + The initial value of cause is input_method. + </description> + <arg name="cause" type="uint" enum="change_cause"/> + </request> + + <enum name="content_hint" bitfield="true"> + <description summary="content hint"> + Content hint is a bitmask to allow to modify the behavior of the text + input. + </description> + <entry name="none" value="0x0" summary="no special behavior"/> + <entry name="completion" value="0x1" summary="suggest word completions"/> + <entry name="spellcheck" value="0x2" summary="suggest word corrections"/> + <entry name="auto_capitalization" value="0x4" summary="switch to uppercase letters at the start of a sentence"/> + <entry name="lowercase" value="0x8" summary="prefer lowercase letters"/> + <entry name="uppercase" value="0x10" summary="prefer uppercase letters"/> + <entry name="titlecase" value="0x20" summary="prefer casing for titles and headings (can be language dependent)"/> + <entry name="hidden_text" value="0x40" summary="characters should be hidden"/> + <entry name="sensitive_data" value="0x80" summary="typed text should not be stored"/> + <entry name="latin" value="0x100" summary="just Latin characters should be entered"/> + <entry name="multiline" value="0x200" summary="the text input is multiline"/> + </enum> + + <enum name="content_purpose"> + <description summary="content purpose"> + The content purpose allows to specify the primary purpose of a text + input. + + This allows an input method to show special purpose input panels with + extra characters or to disallow some characters. + </description> + <entry name="normal" value="0" summary="default input, allowing all characters"/> + <entry name="alpha" value="1" summary="allow only alphabetic characters"/> + <entry name="digits" value="2" summary="allow only digits"/> + <entry name="number" value="3" summary="input a number (including decimal separator and sign)"/> + <entry name="phone" value="4" summary="input a phone number"/> + <entry name="url" value="5" summary="input an URL"/> + <entry name="email" value="6" summary="input an email address"/> + <entry name="name" value="7" summary="input a name of a person"/> + <entry name="password" value="8" summary="input a password (combine with sensitive_data hint)"/> + <entry name="pin" value="9" summary="input is a numeric password (combine with sensitive_data hint)"/> + <entry name="date" value="10" summary="input a date"/> + <entry name="time" value="11" summary="input a time"/> + <entry name="datetime" value="12" summary="input a date and time"/> + <entry name="terminal" value="13" summary="input for a terminal"/> + </enum> + + <request name="set_content_type"> + <description summary="set content purpose and hint"> + Sets the content purpose and content hint. While the purpose is the + basic purpose of an input field, the hint flags allow to modify some of + the behavior. + + Values set with this request are double-buffered. They will get applied + on the next zwp_text_input_v3.commit request. + Subsequent attempts to update them may have no effect. The values + remain valid until the next committed enable or disable request. + + The initial value for hint is none, and the initial value for purpose + is normal. + </description> + <arg name="hint" type="uint" enum="content_hint"/> + <arg name="purpose" type="uint" enum="content_purpose"/> + </request> + + <request name="set_cursor_rectangle"> + <description summary="set cursor position"> + Marks an area around the cursor as a x, y, width, height rectangle in + surface local coordinates. + + Allows the compositor to put a window with word suggestions near the + cursor, without obstructing the text being input. + + If the client is unaware of the position of edited text, it should not + issue this request, to signify lack of support to the compositor. + + Values set with this request are double-buffered. They will get applied + on the next zwp_text_input_v3.commit request, and stay valid until the + next committed enable or disable request. + + The initial values describing a cursor rectangle are empty. That means + the text input does not support describing the cursor area. If the + empty values get applied, subsequent attempts to change them may have + no effect. + </description> + <arg name="x" type="int"/> + <arg name="y" type="int"/> + <arg name="width" type="int"/> + <arg name="height" type="int"/> + </request> + + <request name="commit"> + <description summary="commit state"> + Atomically applies state changes recently sent to the compositor. + + The commit request establishes and updates the state of the client, and + must be issued after any changes to apply them. + + Text input state (enabled status, content purpose, content hint, + surrounding text and change cause, cursor rectangle) is conceptually + double-buffered within the context of a text input, i.e. between a + committed enable request and the following committed enable or disable + request. + + Protocol requests modify the pending state, as opposed to the current + state in use by the input method. A commit request atomically applies + all pending state, replacing the current state. After commit, the new + pending state is as documented for each related request. + + Requests are applied in the order of arrival. + + Neither current nor pending state are modified unless noted otherwise. + + The compositor must count the number of commit requests coming from + each zwp_text_input_v3 object and use the count as the serial in done + events. + </description> + </request> + + <event name="enter"> + <description summary="enter event"> + Notification that this seat's text-input focus is on a certain surface. + + If client has created multiple text input objects, compositor must send + this event to all of them. + + When the seat has the keyboard capability the text-input focus follows + the keyboard focus. This event sets the current surface for the + text-input object. + </description> + <arg name="surface" type="object" interface="wl_surface"/> + </event> + + <event name="leave"> + <description summary="leave event"> + Notification that this seat's text-input focus is no longer on a + certain surface. The client should reset any preedit string previously + set. + + The leave notification clears the current surface. It is sent before + the enter notification for the new focus. After leave event, compositor + must ignore requests from any text input instances until next enter + event. + + When the seat has the keyboard capability the text-input focus follows + the keyboard focus. + </description> + <arg name="surface" type="object" interface="wl_surface"/> + </event> + + <event name="preedit_string"> + <description summary="pre-edit"> + Notify when a new composing text (pre-edit) should be set at the + current cursor position. Any previously set composing text must be + removed. Any previously existing selected text must be removed. + + The argument text contains the pre-edit string buffer. + + The parameters cursor_begin and cursor_end are counted in bytes + relative to the beginning of the submitted text buffer. Cursor should + be hidden when both are equal to -1. + + They could be represented by the client as a line if both values are + the same, or as a text highlight otherwise. + + Values set with this event are double-buffered. They must be applied + and reset to initial on the next zwp_text_input_v3.done event. + + The initial value of text is an empty string, and cursor_begin, + cursor_end and cursor_hidden are all 0. + </description> + <arg name="text" type="string" allow-null="true"/> + <arg name="cursor_begin" type="int"/> + <arg name="cursor_end" type="int"/> + </event> + + <event name="commit_string"> + <description summary="text commit"> + Notify when text should be inserted into the editor widget. The text to + commit could be either just a single character after a key press or the + result of some composing (pre-edit). + + Values set with this event are double-buffered. They must be applied + and reset to initial on the next zwp_text_input_v3.done event. + + The initial value of text is an empty string. + </description> + <arg name="text" type="string" allow-null="true"/> + </event> + + <event name="delete_surrounding_text"> + <description summary="delete surrounding text"> + Notify when the text around the current cursor position should be + deleted. + + Before_length and after_length are the number of bytes before and after + the current cursor index (excluding the selection) to delete. + + If a preedit text is present, in effect before_length is counted from + the beginning of it, and after_length from its end (see done event + sequence). + + Values set with this event are double-buffered. They must be applied + and reset to initial on the next zwp_text_input_v3.done event. + + The initial values of both before_length and after_length are 0. + </description> + <arg name="before_length" type="uint" summary="length of text before current cursor position"/> + <arg name="after_length" type="uint" summary="length of text after current cursor position"/> + </event> + + <event name="done"> + <description summary="apply changes"> + Instruct the application to apply changes to state requested by the + preedit_string, commit_string and delete_surrounding_text events. The + state relating to these events is double-buffered, and each one + modifies the pending state. This event replaces the current state with + the pending state. + + The application must proceed by evaluating the changes in the following + order: + + 1. Replace existing preedit string with the cursor. + 2. Delete requested surrounding text. + 3. Insert commit string with the cursor at its end. + 4. Calculate surrounding text to send. + 5. Insert new preedit text in cursor position. + 6. Place cursor inside preedit text. + + The serial number reflects the last state of the zwp_text_input_v3 + object known to the compositor. The value of the serial argument must + be equal to the number of commit requests already issued on that object. + + When the client receives a done event with a serial different than the + number of past commit requests, it must proceed with evaluating and + applying the changes as normal, except it should not change the current + state of the zwp_text_input_v3 object. All pending state requests + (set_surrounding_text, set_content_type and set_cursor_rectangle) on + the zwp_text_input_v3 object should be sent and committed after + receiving a zwp_text_input_v3.done event with a matching serial. + </description> + <arg name="serial" type="uint"/> + </event> + </interface> + + <interface name="zwp_text_input_manager_v3" version="1"> + <description summary="text input manager"> + A factory for text-input objects. This object is a global singleton. + </description> + + <request name="destroy" type="destructor"> + <description summary="Destroy the wp_text_input_manager"> + Destroy the wp_text_input_manager object. + </description> + </request> + + <request name="get_text_input"> + <description summary="create a new text input object"> + Creates a new text-input object for a given seat. + </description> + <arg name="id" type="new_id" interface="zwp_text_input_v3"/> + <arg name="seat" type="object" interface="wl_seat"/> + </request> + </interface> +</protocol> |