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/* Copyright 2020 Christopher Courtney, aka Drashna Jael're (@drashna) <drashna@live.com>
* Copyright 2019 Sunjun Kim
* Copyright 2020 Ploopy Corporation
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include "trackball.h"
#ifndef OPT_DEBOUNCE
# define OPT_DEBOUNCE 5 // (ms) Time between scroll events
#endif
#ifndef SCROLL_BUTT_DEBOUNCE
# define SCROLL_BUTT_DEBOUNCE 100 // (ms) Time between scroll events
#endif
#ifndef OPT_THRES
# define OPT_THRES 150 // (0-1024) Threshold for actication
#endif
#ifndef OPT_SCALE
# define OPT_SCALE 1 // Multiplier for wheel
#endif
#ifndef PLOOPY_DPI_OPTIONS
# define PLOOPY_DPI_OPTIONS \
{ 1200, 1600, 2400 }
# ifndef PLOOPY_DPI_DEFAULT
# define PLOOPY_DPI_DEFAULT 1
# endif
#endif
#ifndef PLOOPY_DPI_DEFAULT
# define PLOOPY_DPI_DEFAULT 0
#endif
#ifndef PLOOPY_DRAGSCROLL_DPI
# define PLOOPY_DRAGSCROLL_DPI 100 // Fixed-DPI Drag Scroll
#endif
#ifndef PLOOPY_DRAGSCROLL_MULTIPLIER
# define PLOOPY_DRAGSCROLL_MULTIPLIER 0.75 // Variable-DPI Drag Scroll
#endif
keyboard_config_t keyboard_config;
uint16_t dpi_array[] = PLOOPY_DPI_OPTIONS;
#define DPI_OPTION_SIZE (sizeof(dpi_array) / sizeof(uint16_t))
// TODO: Implement libinput profiles
// https://wayland.freedesktop.org/libinput/doc/latest/pointer-acceleration.html
// Compile time accel selection
// Valid options are ACC_NONE, ACC_LINEAR, ACC_CUSTOM, ACC_QUADRATIC
// Trackball State
bool is_scroll_clicked = false;
bool BurstState = false; // init burst state for Trackball module
uint16_t MotionStart = 0; // Timer for accel, 0 is resting state
uint16_t lastScroll = 0; // Previous confirmed wheel event
uint16_t lastMidClick = 0; // Stops scrollwheel from being read if it was pressed
uint8_t OptLowPin = OPT_ENC1;
bool debug_encoder = false;
bool is_drag_scroll = false;
__attribute__((weak)) bool encoder_update_user(uint8_t index, bool clockwise) { return true; }
bool encoder_update_kb(uint8_t index, bool clockwise) {
if (!encoder_update_user(index, clockwise)) {
return false;
}
#ifdef MOUSEKEY_ENABLE
tap_code(clockwise ? KC_WH_U : KC_WH_D);
#else
mouse_report_t mouse_report = pointing_device_get_report();
mouse_report.v = clockwise ? 1 : -1;
pointing_device_set_report(mouse_report);
pointing_device_send();
#endif
return true;
}
void process_wheel(void) {
// TODO: Replace this with interrupt driven code, polling is S L O W
// Lovingly ripped from the Ploopy Source
// If the mouse wheel was just released, do not scroll.
if (timer_elapsed(lastMidClick) < SCROLL_BUTT_DEBOUNCE) {
return;
}
// Limit the number of scrolls per unit time.
if (timer_elapsed(lastScroll) < OPT_DEBOUNCE) {
return;
}
// Don't scroll if the middle button is depressed.
if (is_scroll_clicked) {
#ifndef IGNORE_SCROLL_CLICK
return;
#endif
}
lastScroll = timer_read();
uint16_t p1 = adc_read(OPT_ENC1_MUX);
uint16_t p2 = adc_read(OPT_ENC2_MUX);
if (debug_encoder) dprintf("OPT1: %d, OPT2: %d\n", p1, p2);
int dir = opt_encoder_handler(p1, p2);
if (dir == 0) return;
encoder_update_kb(0, dir == 1);
}
report_mouse_t pointing_device_task_kb(report_mouse_t mouse_report) {
process_wheel();
if (is_drag_scroll) {
mouse_report.h = mouse_report.x;
#ifdef PLOOPY_DRAGSCROLL_INVERT
// Invert vertical scroll direction
mouse_report.v = -mouse_report.y;
#else
mouse_report.v = mouse_report.y;
#endif
mouse_report.x = 0;
mouse_report.y = 0;
}
return pointing_device_task_user(mouse_report);
}
bool process_record_kb(uint16_t keycode, keyrecord_t* record) {
if (true) {
xprintf("KL: kc: %u, col: %u, row: %u, pressed: %u\n", keycode, record->event.key.col, record->event.key.row, record->event.pressed);
}
// Update Timer to prevent accidental scrolls
if ((record->event.key.col == 1) && (record->event.key.row == 0)) {
lastMidClick = timer_read();
is_scroll_clicked = record->event.pressed;
}
if (!process_record_user(keycode, record)) {
return false;
}
if (keycode == DPI_CONFIG && record->event.pressed) {
keyboard_config.dpi_config = (keyboard_config.dpi_config + 1) % DPI_OPTION_SIZE;
eeconfig_update_kb(keyboard_config.raw);
pointing_device_set_cpi(dpi_array[keyboard_config.dpi_config]);
}
if (keycode == DRAG_SCROLL) {
#ifndef PLOOPY_DRAGSCROLL_MOMENTARY
if (record->event.pressed)
#endif
{
is_drag_scroll ^= 1;
}
#ifdef PLOOPY_DRAGSCROLL_FIXED
pointing_device_set_cpi(is_drag_scroll ? PLOOPY_DRAGSCROLL_DPI : dpi_array[keyboard_config.dpi_config]);
#else
pointing_device_set_cpi(is_drag_scroll ? (dpi_array[keyboard_config.dpi_config] * PLOOPY_DRAGSCROLL_MULTIPLIER) : dpi_array[keyboard_config.dpi_config]);
#endif
}
/* If Mousekeys is disabled, then use handle the mouse button
* keycodes. This makes things simpler, and allows usage of
* the keycodes in a consistent manner. But only do this if
* Mousekeys is not enable, so it's not handled twice.
*/
#ifndef MOUSEKEY_ENABLE
if (IS_MOUSEKEY_BUTTON(keycode)) {
report_mouse_t currentReport = pointing_device_get_report();
currentReport.buttons = pointing_device_handle_buttons(currentReport.buttons, record->event.pressed, keycode - KC_MS_BTN1);
pointing_device_set_report(currentReport);
pointing_device_send();
}
#endif
return true;
}
// Hardware Setup
void keyboard_pre_init_kb(void) {
// debug_enable = true;
// debug_matrix = true;
// debug_mouse = true;
// debug_encoder = true;
setPinInput(OPT_ENC1);
setPinInput(OPT_ENC2);
/* Ground all output pins connected to ground. This provides additional
* pathways to ground. If you're messing with this, know this: driving ANY
* of these pins high will cause a short. On the MCU. Ka-blooey.
*/
#ifdef UNUSED_PINS
const pin_t unused_pins[] = UNUSED_PINS;
for (uint8_t i = 0; i < (sizeof(unused_pins) / sizeof(pin_t)); i++) {
setPinOutput(unused_pins[i]);
writePinLow(unused_pins[i]);
}
#endif
// This is the debug LED.
#if defined(DEBUG_LED_PIN)
setPinOutput(DEBUG_LED_PIN);
writePin(DEBUG_LED_PIN, debug_enable);
#endif
keyboard_pre_init_user();
}
void pointing_device_init_kb(void) {
pointing_device_set_cpi(dpi_array[keyboard_config.dpi_config]);
// initialize the scroll wheel's optical encoder
opt_encoder_init();
}
void eeconfig_init_kb(void) {
keyboard_config.dpi_config = PLOOPY_DPI_DEFAULT;
eeconfig_update_kb(keyboard_config.raw);
eeconfig_init_user();
}
void matrix_init_kb(void) {
// is safe to just read DPI setting since matrix init
// comes before pointing device init.
keyboard_config.raw = eeconfig_read_kb();
if (keyboard_config.dpi_config > DPI_OPTION_SIZE) {
eeconfig_init_kb();
}
matrix_init_user();
}
void keyboard_post_init_kb(void) {
pointing_device_set_cpi(dpi_array[keyboard_config.dpi_config]);
keyboard_post_init_user();
}
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