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/*
Copyright 2011 Jun Wako <wakojun@gmail.com>
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 <stdint.h>
#include "keycode.h"
#include "host.h"
#include "timer.h"
#include "print.h"
#include "debug.h"
#include "mousekey.h"
static report_mouse_t mouse_report = {};
static uint8_t mousekey_repeat = 0;
static uint8_t mousekey_accel = 0;
static void mousekey_debug(void);
/*
* Mouse keys acceleration algorithm
* http://en.wikipedia.org/wiki/Mouse_keys
*
* speed = delta * max_speed * (repeat / time_to_max)**((1000+curve)/1000)
*/
/* milliseconds between the initial key press and first repeated motion event (0-2550) */
uint8_t mk_delay = MOUSEKEY_DELAY/10;
/* milliseconds between repeated motion events (0-255) */
uint8_t mk_interval = MOUSEKEY_INTERVAL;
/* steady speed (in action_delta units) applied each event (0-255) */
uint8_t mk_max_speed = MOUSEKEY_MAX_SPEED;
/* number of events (count) accelerating to steady speed (0-255) */
uint8_t mk_time_to_max = MOUSEKEY_TIME_TO_MAX;
/* ramp used to reach maximum pointer speed (NOT SUPPORTED) */
//int8_t mk_curve = 0;
/* wheel params */
uint8_t mk_wheel_max_speed = MOUSEKEY_WHEEL_MAX_SPEED;
uint8_t mk_wheel_time_to_max = MOUSEKEY_WHEEL_TIME_TO_MAX;
static uint16_t last_timer = 0;
static uint8_t move_unit(void)
{
uint16_t unit;
if (mousekey_accel & (1<<0)) {
unit = (MOUSEKEY_MOVE_DELTA * mk_max_speed)/4;
} else if (mousekey_accel & (1<<1)) {
unit = (MOUSEKEY_MOVE_DELTA * mk_max_speed)/2;
} else if (mousekey_accel & (1<<2)) {
unit = (MOUSEKEY_MOVE_DELTA * mk_max_speed);
} else if (mousekey_repeat == 0) {
unit = MOUSEKEY_MOVE_DELTA;
} else if (mousekey_repeat >= mk_time_to_max) {
unit = MOUSEKEY_MOVE_DELTA * mk_max_speed;
} else {
unit = (MOUSEKEY_MOVE_DELTA * mk_max_speed * mousekey_repeat) / mk_time_to_max;
}
return (unit > MOUSEKEY_MOVE_MAX ? MOUSEKEY_MOVE_MAX : (unit == 0 ? 1 : unit));
}
static uint8_t wheel_unit(void)
{
uint16_t unit;
if (mousekey_accel & (1<<0)) {
unit = (MOUSEKEY_WHEEL_DELTA * mk_wheel_max_speed)/4;
} else if (mousekey_accel & (1<<1)) {
unit = (MOUSEKEY_WHEEL_DELTA * mk_wheel_max_speed)/2;
} else if (mousekey_accel & (1<<2)) {
unit = (MOUSEKEY_WHEEL_DELTA * mk_wheel_max_speed);
} else if (mousekey_repeat == 0) {
unit = MOUSEKEY_WHEEL_DELTA;
} else if (mousekey_repeat >= mk_wheel_time_to_max) {
unit = MOUSEKEY_WHEEL_DELTA * mk_wheel_max_speed;
} else {
unit = (MOUSEKEY_WHEEL_DELTA * mk_wheel_max_speed * mousekey_repeat) / mk_wheel_time_to_max;
}
return (unit > MOUSEKEY_WHEEL_MAX ? MOUSEKEY_WHEEL_MAX : (unit == 0 ? 1 : unit));
}
void mousekey_task(void)
{
if (timer_elapsed(last_timer) < (mousekey_repeat ? mk_interval : mk_delay*10))
return;
if (mouse_report.x == 0 && mouse_report.y == 0 && mouse_report.v == 0 && mouse_report.h == 0)
return;
if (mousekey_repeat != UINT8_MAX)
mousekey_repeat++;
if (mouse_report.x > 0) mouse_report.x = move_unit();
if (mouse_report.x < 0) mouse_report.x = move_unit() * -1;
if (mouse_report.y > 0) mouse_report.y = move_unit();
if (mouse_report.y < 0) mouse_report.y = move_unit() * -1;
/* diagonal move [1/sqrt(2) = 0.7] */
if (mouse_report.x && mouse_report.y) {
mouse_report.x *= 0.7;
mouse_report.y *= 0.7;
}
if (mouse_report.v > 0) mouse_report.v = wheel_unit();
if (mouse_report.v < 0) mouse_report.v = wheel_unit() * -1;
if (mouse_report.h > 0) mouse_report.h = wheel_unit();
if (mouse_report.h < 0) mouse_report.h = wheel_unit() * -1;
mousekey_send();
}
void mousekey_on(uint8_t code)
{
if (code == KC_MS_UP) mouse_report.y = move_unit() * -1;
else if (code == KC_MS_DOWN) mouse_report.y = move_unit();
else if (code == KC_MS_LEFT) mouse_report.x = move_unit() * -1;
else if (code == KC_MS_RIGHT) mouse_report.x = move_unit();
else if (code == KC_MS_WH_UP) mouse_report.v = wheel_unit();
else if (code == KC_MS_WH_DOWN) mouse_report.v = wheel_unit() * -1;
else if (code == KC_MS_WH_LEFT) mouse_report.h = wheel_unit() * -1;
else if (code == KC_MS_WH_RIGHT) mouse_report.h = wheel_unit();
else if (code == KC_MS_BTN1) mouse_report.buttons |= MOUSE_BTN1;
else if (code == KC_MS_BTN2) mouse_report.buttons |= MOUSE_BTN2;
else if (code == KC_MS_BTN3) mouse_report.buttons |= MOUSE_BTN3;
else if (code == KC_MS_BTN4) mouse_report.buttons |= MOUSE_BTN4;
else if (code == KC_MS_BTN5) mouse_report.buttons |= MOUSE_BTN5;
else if (code == KC_MS_ACCEL0) mousekey_accel |= (1<<0);
else if (code == KC_MS_ACCEL1) mousekey_accel |= (1<<1);
else if (code == KC_MS_ACCEL2) mousekey_accel |= (1<<2);
}
void mousekey_off(uint8_t code)
{
if (code == KC_MS_UP && mouse_report.y < 0) mouse_report.y = 0;
else if (code == KC_MS_DOWN && mouse_report.y > 0) mouse_report.y = 0;
else if (code == KC_MS_LEFT && mouse_report.x < 0) mouse_report.x = 0;
else if (code == KC_MS_RIGHT && mouse_report.x > 0) mouse_report.x = 0;
else if (code == KC_MS_WH_UP && mouse_report.v > 0) mouse_report.v = 0;
else if (code == KC_MS_WH_DOWN && mouse_report.v < 0) mouse_report.v = 0;
else if (code == KC_MS_WH_LEFT && mouse_report.h < 0) mouse_report.h = 0;
else if (code == KC_MS_WH_RIGHT && mouse_report.h > 0) mouse_report.h = 0;
else if (code == KC_MS_BTN1) mouse_report.buttons &= ~MOUSE_BTN1;
else if (code == KC_MS_BTN2) mouse_report.buttons &= ~MOUSE_BTN2;
else if (code == KC_MS_BTN3) mouse_report.buttons &= ~MOUSE_BTN3;
else if (code == KC_MS_BTN4) mouse_report.buttons &= ~MOUSE_BTN4;
else if (code == KC_MS_BTN5) mouse_report.buttons &= ~MOUSE_BTN5;
else if (code == KC_MS_ACCEL0) mousekey_accel &= ~(1<<0);
else if (code == KC_MS_ACCEL1) mousekey_accel &= ~(1<<1);
else if (code == KC_MS_ACCEL2) mousekey_accel &= ~(1<<2);
if (mouse_report.x == 0 && mouse_report.y == 0 && mouse_report.v == 0 && mouse_report.h == 0)
mousekey_repeat = 0;
}
void mousekey_send(void)
{
mousekey_debug();
host_mouse_send(&mouse_report);
last_timer = timer_read();
}
void mousekey_clear(void)
{
mouse_report = (report_mouse_t){};
mousekey_repeat = 0;
mousekey_accel = 0;
}
static void mousekey_debug(void)
{
if (!debug_mouse) return;
print("mousekey [btn|x y v h](rep/acl): [");
phex(mouse_report.buttons); print("|");
print_decs(mouse_report.x); print(" ");
print_decs(mouse_report.y); print(" ");
print_decs(mouse_report.v); print(" ");
print_decs(mouse_report.h); print("](");
print_dec(mousekey_repeat); print("/");
print_dec(mousekey_accel); print(")\n");
}
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