forked from kofal.net/zmk
cb867f92db
refactor(pointing): Allow stopping event propagation
Allow input processors to return a special value if a given input event
should not be further processed/propagated.
feat(pointing): Add behavior input processor
Add the ability to intercept certain input events and trigger behaviors
when they occur.
Co-authored-by: Jorge Villalobos <minusfive@users.noreply.github.com>
Co-authored-by: Cem Aksoylar <caksoylar@users.noreply.github.com>
72 lines
3.0 KiB
C
72 lines
3.0 KiB
C
/*
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* Copyright (c) 2024 The ZMK Contributors
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*
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* SPDX-License-Identifier: MIT
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*/
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#pragma once
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#include <zephyr/types.h>
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#include <stddef.h>
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#include <zephyr/sys/util.h>
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#include <string.h>
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#include <zephyr/device.h>
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#include <zephyr/input/input.h>
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#define ZMK_INPUT_PROC_CONTINUE 0
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#define ZMK_INPUT_PROC_STOP 1
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struct zmk_input_processor_entry {
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const struct device *dev;
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uint32_t param1;
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uint32_t param2;
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bool track_remainders;
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};
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#define ZMK_INPUT_PROCESSOR_ENTRY_AT_IDX(idx, n) \
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{ \
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.dev = DEVICE_DT_GET(DT_PHANDLE_BY_IDX(n, input_processors, idx)), \
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.param1 = COND_CODE_0(DT_PHA_HAS_CELL_AT_IDX(n, input_processors, idx, param1), (0), \
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(DT_PHA_BY_IDX(n, input_processors, idx, param1))), \
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.param2 = COND_CODE_0(DT_PHA_HAS_CELL_AT_IDX(n, input_processors, idx, param2), (0), \
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(DT_PHA_BY_IDX(n, input_processors, idx, param2))), \
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.track_remainders = \
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COND_CODE_1(DT_PROP(DT_PHANDLE_BY_IDX(n, input_processors, idx), track_remainders), \
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(true), (false)), \
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}
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struct zmk_input_processor_state {
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uint8_t input_device_index;
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int16_t *remainder;
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};
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// TODO: Need the ability to store remainders? Some data passed in?
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typedef int (*zmk_input_processor_handle_event_callback_t)(const struct device *dev,
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struct input_event *event,
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uint32_t param1, uint32_t param2,
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struct zmk_input_processor_state *state);
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__subsystem struct zmk_input_processor_driver_api {
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zmk_input_processor_handle_event_callback_t handle_event;
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};
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__syscall int zmk_input_processor_handle_event(const struct device *dev, struct input_event *event,
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uint32_t param1, uint32_t param2,
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struct zmk_input_processor_state *state);
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static inline int z_impl_zmk_input_processor_handle_event(const struct device *dev,
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struct input_event *event,
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uint32_t param1, uint32_t param2,
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struct zmk_input_processor_state *state) {
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const struct zmk_input_processor_driver_api *api =
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(const struct zmk_input_processor_driver_api *)dev->api;
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if (api->handle_event == NULL) {
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return -ENOTSUP;
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}
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return api->handle_event(dev, event, param1, param2, state);
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}
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#include <syscalls/input_processor.h>
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