343 lines
13 KiB
C
343 lines
13 KiB
C
/*
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* Copyright 2020 Christopher Courtney <drashna@live.com> (@drashna)
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* Copyright 2021 Quentin LEBASTARD <qlebastard@gmail.com>
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* Copyright 2021 Charly Delay <charly@codesink.dev> (@0xcharly)
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Publicw License as published by
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* the Free Software Foundation, either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include "charybdis.h"
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#ifdef CONSOLE_ENABLE
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# include "print.h"
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#endif // CONSOLE_ENABLE
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#ifdef POINTING_DEVICE_ENABLE
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# ifndef CHARYBDIS_MINIMUM_DEFAULT_DPI
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# define CHARYBDIS_MINIMUM_DEFAULT_DPI 400
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# endif // CHARYBDIS_MINIMUM_DEFAULT_DPI
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# ifndef CHARYBDIS_DEFAULT_DPI_CONFIG_STEP
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# define CHARYBDIS_DEFAULT_DPI_CONFIG_STEP 200
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# endif // CHARYBDIS_DEFAULT_DPI_CONFIG_STEP
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# ifndef CHARYBDIS_MINIMUM_SNIPING_DPI
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# define CHARYBDIS_MINIMUM_SNIPING_DPI 200
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# endif // CHARYBDIS_MINIMUM_SNIPER_MODE_DPI
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# ifndef CHARYBDIS_SNIPING_DPI_CONFIG_STEP
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# define CHARYBDIS_SNIPING_DPI_CONFIG_STEP 100
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# endif // CHARYBDIS_SNIPING_DPI_CONFIG_STEP
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// Fixed DPI for drag-scroll.
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# ifndef CHARYBDIS_DRAGSCROLL_DPI
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# define CHARYBDIS_DRAGSCROLL_DPI 100
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# endif // CHARYBDIS_DRAGSCROLL_DPI
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# ifndef CHARYBDIS_DRAGSCROLL_BUFFER_SIZE
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# define CHARYBDIS_DRAGSCROLL_BUFFER_SIZE 6
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# endif // !CHARYBDIS_DRAGSCROLL_BUFFER_SIZE
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# ifndef CHARYBDIS_POINTER_ACCELERATION_FACTOR
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# define CHARYBDIS_POINTER_ACCELERATION_FACTOR 24
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# endif // !CHARYBDIS_POINTER_ACCELERATION_FACTOR
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typedef union {
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uint8_t raw;
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struct {
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uint8_t pointer_default_dpi : 4; // 16 steps available.
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uint8_t pointer_sniping_dpi : 2; // 4 steps available.
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bool is_dragscroll_enabled : 1;
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bool is_sniping_enabled : 1;
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} __attribute__((packed));
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} charybdis_config_t;
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static charybdis_config_t g_charybdis_config = {0};
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/**
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* \brief Set the value of `config` from EEPROM.
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*
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* Note that `is_dragscroll_enabled` and `is_sniping_enabled` are purposefully
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* ignored since we do not want to persist this state to memory. In practice,
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* this state is always written to maximize write-performances. Therefore, we
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* explicitly set them to `false` in this function.
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*/
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static void read_charybdis_config_from_eeprom(charybdis_config_t* config) {
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config->raw = eeconfig_read_kb() & 0xff;
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config->is_dragscroll_enabled = false;
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config->is_sniping_enabled = false;
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}
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/**
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* \brief Save the value of `config` to eeprom.
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*
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* Note that all values are written verbatim, including whether drag-scroll
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* and/or sniper mode are enabled. `read_charybdis_config_from_eeprom(…)`
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* resets these 2 values to `false` since it does not make sense to persist
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* these across reboots of the board.
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*/
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static void write_charybdis_config_to_eeprom(charybdis_config_t* config) { eeconfig_update_kb(config->raw); }
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/** \brief Return the current value of the pointer's default DPI. */
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static uint16_t get_pointer_default_dpi(charybdis_config_t* config) { return (uint16_t)config->pointer_default_dpi * CHARYBDIS_DEFAULT_DPI_CONFIG_STEP + CHARYBDIS_MINIMUM_DEFAULT_DPI; }
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/** \brief Return the current value of the pointer's sniper-mode DPI. */
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static uint16_t get_pointer_sniping_dpi(charybdis_config_t* config) { return (uint16_t)config->pointer_sniping_dpi * CHARYBDIS_SNIPING_DPI_CONFIG_STEP + CHARYBDIS_MINIMUM_SNIPING_DPI; }
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/** \brief Set the appropriate DPI for the input config. */
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static void maybe_update_pointing_device_cpi(charybdis_config_t* config) {
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if (config->is_dragscroll_enabled) {
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pointing_device_set_cpi(CHARYBDIS_DRAGSCROLL_DPI);
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} else if (config->is_sniping_enabled) {
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pointing_device_set_cpi(get_pointer_sniping_dpi(config));
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} else {
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pointing_device_set_cpi(get_pointer_default_dpi(config));
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}
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}
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/**
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* \brief Update the pointer's default DPI to the next or previous step.
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*
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* Increases the DPI value if `forward` is `true`, decreases it otherwise.
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* The increment/decrement steps are equal to CHARYBDIS_DEFAULT_DPI_CONFIG_STEP.
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*/
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static void step_pointer_default_dpi(charybdis_config_t* config, bool forward) {
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config->pointer_default_dpi += forward ? 1 : -1;
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maybe_update_pointing_device_cpi(config);
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}
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/**
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* \brief Update the pointer's sniper-mode DPI to the next or previous step.
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*
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* Increases the DPI value if `forward` is `true`, decreases it otherwise.
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* The increment/decrement steps are equal to CHARYBDIS_SNIPING_DPI_CONFIG_STEP.
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*/
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static void step_pointer_sniping_dpi(charybdis_config_t* config, bool forward) {
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config->pointer_sniping_dpi += forward ? 1 : -1;
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maybe_update_pointing_device_cpi(config);
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}
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uint16_t charybdis_get_pointer_default_dpi(void) { return get_pointer_default_dpi(&g_charybdis_config); }
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uint16_t charybdis_get_pointer_sniping_dpi(void) { return get_pointer_sniping_dpi(&g_charybdis_config); }
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void charybdis_cycle_pointer_default_dpi_noeeprom(bool forward) { step_pointer_default_dpi(&g_charybdis_config, forward); }
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void charybdis_cycle_pointer_default_dpi(bool forward) {
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step_pointer_default_dpi(&g_charybdis_config, forward);
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write_charybdis_config_to_eeprom(&g_charybdis_config);
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}
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void charybdis_cycle_pointer_sniping_dpi_noeeprom(bool forward) { step_pointer_sniping_dpi(&g_charybdis_config, forward); }
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void charybdis_cycle_pointer_sniping_dpi(bool forward) {
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step_pointer_sniping_dpi(&g_charybdis_config, forward);
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write_charybdis_config_to_eeprom(&g_charybdis_config);
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}
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bool charybdis_get_pointer_sniping_enabled(void) { return g_charybdis_config.is_sniping_enabled; }
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void charybdis_set_pointer_sniping_enabled(bool enable) {
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g_charybdis_config.is_sniping_enabled = enable;
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maybe_update_pointing_device_cpi(&g_charybdis_config);
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}
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bool charybdis_get_pointer_dragscroll_enabled(void) { return g_charybdis_config.is_dragscroll_enabled; }
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void charybdis_set_pointer_dragscroll_enabled(bool enable) {
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g_charybdis_config.is_dragscroll_enabled = enable;
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maybe_update_pointing_device_cpi(&g_charybdis_config);
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}
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void pointing_device_init_kb(void) { maybe_update_pointing_device_cpi(&g_charybdis_config); }
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# ifndef CONSTRAIN_HID
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# define CONSTRAIN_HID(value) ((value) < -127 ? -127 : ((value) > 127 ? 127 : (value)))
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# endif // !CONSTRAIN_HID
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/**
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* \brief Add optional acceleration effect.
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*
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* If `CHARYBDIS_ENABLE_POINTER_ACCELERATION` is defined, add a simple and naive
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* acceleration effect to the provided value. Return the value unchanged
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* otherwise.
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*/
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# ifndef DISPLACEMENT_WITH_ACCELERATION
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# ifdef CHARYBDIS_POINTER_ACCELERATION_ENABLE
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# define DISPLACEMENT_WITH_ACCELERATION(d) (CONSTRAIN_HID(d > 0 ? d * d / CHARYBDIS_POINTER_ACCELERATION_FACTOR + d : -d * d / CHARYBDIS_POINTER_ACCELERATION_FACTOR + d))
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# else // !CHARYBDIS_POINTER_ACCELERATION_ENABLE
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# define DISPLACEMENT_WITH_ACCELERATION(d) (d)
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# endif // CHARYBDIS_POINTER_ACCELERATION_ENABLE
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# endif // !DISPLACEMENT_WITH_ACCELERATION
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/**
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* \brief Augment the pointing device behavior.
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*
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* Implement the Charybdis-specific features for pointing devices:
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* - Drag-scroll
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* - Sniping
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* - Acceleration
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*/
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static void pointing_device_task_charybdis(report_mouse_t* mouse_report) {
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static int16_t scroll_buffer_x = 0;
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static int16_t scroll_buffer_y = 0;
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if (g_charybdis_config.is_dragscroll_enabled) {
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# ifdef CHARYBDIS_DRAGSCROLL_REVERSE_X
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scroll_buffer_x -= mouse_report->x;
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# else
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scroll_buffer_x += mouse_report->x;
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# endif // CHARYBDIS_DRAGSCROLL_REVERSE_X
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# ifdef CHARYBDIS_DRAGSCROLL_REVERSE_Y
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scroll_buffer_y -= mouse_report->y;
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# else
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scroll_buffer_y += mouse_report->y;
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# endif // CHARYBDIS_DRAGSCROLL_REVERSE_Y
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mouse_report->x = 0;
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mouse_report->y = 0;
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if (abs(scroll_buffer_x) > CHARYBDIS_DRAGSCROLL_BUFFER_SIZE) {
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mouse_report->h = scroll_buffer_x > 0 ? 1 : -1;
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scroll_buffer_x = 0;
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}
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if (abs(scroll_buffer_y) > CHARYBDIS_DRAGSCROLL_BUFFER_SIZE) {
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mouse_report->v = scroll_buffer_y > 0 ? 1 : -1;
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scroll_buffer_y = 0;
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}
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} else if (!g_charybdis_config.is_sniping_enabled) {
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mouse_report->x = DISPLACEMENT_WITH_ACCELERATION(mouse_report->x);
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mouse_report->y = DISPLACEMENT_WITH_ACCELERATION(mouse_report->y);
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}
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}
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report_mouse_t pointing_device_task_kb(report_mouse_t mouse_report) {
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if (is_keyboard_master()) {
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pointing_device_task_charybdis(&mouse_report);
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mouse_report = pointing_device_task_user(mouse_report);
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}
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return mouse_report;
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}
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# if defined(POINTING_DEVICE_ENABLE) && !defined(NO_CHARYBDIS_KEYCODES)
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/** \brief Whether SHIFT mod is enabled. */
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static bool has_shift_mod(void) {
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# ifdef NO_ACTION_ONESHOT
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return mod_config(get_mods()) & MOD_MASK_SHIFT;
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# else
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return mod_config(get_mods() | get_oneshot_mods()) & MOD_MASK_SHIFT;
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# endif // NO_ACTION_ONESHOT
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}
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# endif // POINTING_DEVICE_ENABLE && !NO_CHARYBDIS_KEYCODES
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/**
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* \brief Outputs the Charybdis configuration to console.
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*
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* Prints the in-memory configuration structure to console, for debugging.
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* Includes:
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* - raw value
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* - drag-scroll: on/off
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* - sniping: on/off
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* - default DPI: internal table index/actual DPI
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* - sniping DPI: internal table index/actual DPI
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*/
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static void debug_charybdis_config_to_console(charybdis_config_t* config) {
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# ifdef CONSOLE_ENABLE
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dprintf("(charybdis) process_record_kb: config = {\n"
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"\traw = 0x%04X,\n"
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"\t{\n"
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"\t\tis_dragscroll_enabled=%b\n"
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"\t\tis_sniping_enabled=%b\n"
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"\t\tdefault_dpi=0x%02X (%ld)\n"
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"\t\tsniping_dpi=0x%01X (%ld)\n"
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"\t}\n"
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"}\n",
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config->raw, config->is_dragscroll_enabled, config->is_sniping_enabled, config->pointer_default_dpi, get_pointer_default_dpi(config), config->pointer_sniping_dpi, get_pointer_sniping_dpi(config));
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# endif // CONSOLE_ENABLE
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}
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bool process_record_kb(uint16_t keycode, keyrecord_t* record) {
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if (!process_record_user(keycode, record)) {
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debug_charybdis_config_to_console(&g_charybdis_config);
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return false;
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}
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# ifdef POINTING_DEVICE_ENABLE
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# ifndef NO_CHARYBDIS_KEYCODES
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switch (keycode) {
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case POINTER_DEFAULT_DPI_FORWARD:
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if (record->event.pressed) {
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// Step backward if shifted, forward otherwise.
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charybdis_cycle_pointer_default_dpi(/* forward= */ !has_shift_mod());
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}
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break;
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case POINTER_DEFAULT_DPI_REVERSE:
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if (record->event.pressed) {
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// Step forward if shifted, backward otherwise.
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charybdis_cycle_pointer_default_dpi(/* forward= */ has_shift_mod());
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}
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break;
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case POINTER_SNIPING_DPI_FORWARD:
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if (record->event.pressed) {
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// Step backward if shifted, forward otherwise.
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charybdis_cycle_pointer_sniping_dpi(/* forward= */ !has_shift_mod());
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}
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break;
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case POINTER_SNIPING_DPI_REVERSE:
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if (record->event.pressed) {
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// Step forward if shifted, backward otherwise.
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charybdis_cycle_pointer_sniping_dpi(/* forward= */ has_shift_mod());
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}
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break;
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case SNIPING_MODE:
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charybdis_set_pointer_sniping_enabled(record->event.pressed);
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break;
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case SNIPING_MODE_TOGGLE:
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if (record->event.pressed) {
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charybdis_set_pointer_sniping_enabled(!charybdis_get_pointer_sniping_enabled());
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}
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break;
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case DRAGSCROLL_MODE:
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charybdis_set_pointer_dragscroll_enabled(record->event.pressed);
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break;
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case DRAGSCROLL_MODE_TOGGLE:
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if (record->event.pressed) {
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charybdis_set_pointer_dragscroll_enabled(!charybdis_get_pointer_dragscroll_enabled());
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}
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break;
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}
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# endif // !NO_CHARYBDIS_KEYCODES
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# ifndef MOUSEKEY_ENABLE
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// Simulate mouse keys if full support is not enabled (reduces firmware size
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// while maintaining support for mouse keys).
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if (IS_MOUSEKEY_BUTTON(keycode)) {
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report_mouse_t mouse_report = pointing_device_get_report();
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mouse_report.buttons = pointing_device_handle_buttons(mouse_report.buttons, record->event.pressed, keycode - KC_MS_BTN1);
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pointing_device_set_report(mouse_report);
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pointing_device_send();
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}
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# endif // !MOUSEKEY_ENABLE
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# endif // POINTING_DEVICE_ENABLE
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debug_charybdis_config_to_console(&g_charybdis_config);
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return true;
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}
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void eeconfig_init_kb(void) {
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g_charybdis_config.raw = 0;
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write_charybdis_config_to_eeprom(&g_charybdis_config);
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maybe_update_pointing_device_cpi(&g_charybdis_config);
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eeconfig_init_user();
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}
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void matrix_init_kb(void) {
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read_charybdis_config_from_eeprom(&g_charybdis_config);
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matrix_init_user();
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}
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#endif // POINTING_DEVICE_ENABLE
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