204 lines
7.5 KiB
C
204 lines
7.5 KiB
C
/*
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Copyright 2011 Jun Wako <wakojun@gmail.com>
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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 Public 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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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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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 <stdint.h>
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#include "keycode.h"
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#include "host.h"
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#include "timer.h"
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#include "print.h"
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#include "debug.h"
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#include "mousekey.h"
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static report_mouse_t mouse_report = {};
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static uint8_t mousekey_repeat = 0;
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static uint8_t mousekey_accel = 0;
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static void mousekey_debug(void);
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/*
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* Mouse keys acceleration algorithm
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* http://en.wikipedia.org/wiki/Mouse_keys
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*
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* speed = delta * max_speed * (repeat / time_to_max)**((1000+curve)/1000)
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*/
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/* milliseconds between the initial key press and first repeated motion event (0-2550) */
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uint8_t mk_delay = MOUSEKEY_DELAY/10;
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/* milliseconds between repeated motion events (0-255) */
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uint8_t mk_interval = MOUSEKEY_INTERVAL;
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/* steady speed (in action_delta units) applied each event (0-255) */
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uint8_t mk_max_speed = MOUSEKEY_MAX_SPEED;
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/* number of events (count) accelerating to steady speed (0-255) */
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uint8_t mk_time_to_max = MOUSEKEY_TIME_TO_MAX;
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/* ramp used to reach maximum pointer speed (NOT SUPPORTED) */
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//int8_t mk_curve = 0;
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/* wheel params */
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uint8_t mk_wheel_max_speed = MOUSEKEY_WHEEL_MAX_SPEED;
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uint8_t mk_wheel_time_to_max = MOUSEKEY_WHEEL_TIME_TO_MAX;
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static uint16_t last_timer = 0;
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inline int8_t times_inv_sqrt2(int8_t x)
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{
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// 181/256 is pretty close to 1/sqrt(2)
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// 0.70703125 0.707106781
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// 1 too small for x=99 and x=198
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// This ends up being a mult and discard lower 8 bits
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return (x * 181) >> 8;
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}
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static uint8_t move_unit(void)
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{
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uint16_t unit;
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if (mousekey_accel & (1<<0)) {
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unit = (MOUSEKEY_MOVE_DELTA * mk_max_speed)/4;
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} else if (mousekey_accel & (1<<1)) {
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unit = (MOUSEKEY_MOVE_DELTA * mk_max_speed)/2;
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} else if (mousekey_accel & (1<<2)) {
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unit = (MOUSEKEY_MOVE_DELTA * mk_max_speed);
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} else if (mousekey_repeat == 0) {
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unit = MOUSEKEY_MOVE_DELTA;
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} else if (mousekey_repeat >= mk_time_to_max) {
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unit = MOUSEKEY_MOVE_DELTA * mk_max_speed;
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} else {
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unit = (MOUSEKEY_MOVE_DELTA * mk_max_speed * mousekey_repeat) / mk_time_to_max;
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}
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return (unit > MOUSEKEY_MOVE_MAX ? MOUSEKEY_MOVE_MAX : (unit == 0 ? 1 : unit));
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}
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static uint8_t wheel_unit(void)
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{
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uint16_t unit;
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if (mousekey_accel & (1<<0)) {
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unit = (MOUSEKEY_WHEEL_DELTA * mk_wheel_max_speed)/4;
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} else if (mousekey_accel & (1<<1)) {
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unit = (MOUSEKEY_WHEEL_DELTA * mk_wheel_max_speed)/2;
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} else if (mousekey_accel & (1<<2)) {
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unit = (MOUSEKEY_WHEEL_DELTA * mk_wheel_max_speed);
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} else if (mousekey_repeat == 0) {
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unit = MOUSEKEY_WHEEL_DELTA;
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} else if (mousekey_repeat >= mk_wheel_time_to_max) {
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unit = MOUSEKEY_WHEEL_DELTA * mk_wheel_max_speed;
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} else {
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unit = (MOUSEKEY_WHEEL_DELTA * mk_wheel_max_speed * mousekey_repeat) / mk_wheel_time_to_max;
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}
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return (unit > MOUSEKEY_WHEEL_MAX ? MOUSEKEY_WHEEL_MAX : (unit == 0 ? 1 : unit));
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}
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void mousekey_task(void)
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{
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if (timer_elapsed(last_timer) < (mousekey_repeat ? mk_interval : mk_delay*10))
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return;
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if (mouse_report.x == 0 && mouse_report.y == 0 && mouse_report.v == 0 && mouse_report.h == 0)
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return;
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if (mousekey_repeat != UINT8_MAX)
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mousekey_repeat++;
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if (mouse_report.x > 0) mouse_report.x = move_unit();
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if (mouse_report.x < 0) mouse_report.x = move_unit() * -1;
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if (mouse_report.y > 0) mouse_report.y = move_unit();
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if (mouse_report.y < 0) mouse_report.y = move_unit() * -1;
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/* diagonal move [1/sqrt(2)] */
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if (mouse_report.x && mouse_report.y) {
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mouse_report.x = times_inv_sqrt2(mouse_report.x);
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mouse_report.y = times_inv_sqrt2(mouse_report.y);
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}
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if (mouse_report.v > 0) mouse_report.v = wheel_unit();
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if (mouse_report.v < 0) mouse_report.v = wheel_unit() * -1;
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if (mouse_report.h > 0) mouse_report.h = wheel_unit();
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if (mouse_report.h < 0) mouse_report.h = wheel_unit() * -1;
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mousekey_send();
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}
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void mousekey_on(uint8_t code)
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{
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if (code == KC_MS_UP) mouse_report.y = move_unit() * -1;
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else if (code == KC_MS_DOWN) mouse_report.y = move_unit();
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else if (code == KC_MS_LEFT) mouse_report.x = move_unit() * -1;
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else if (code == KC_MS_RIGHT) mouse_report.x = move_unit();
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else if (code == KC_MS_WH_UP) mouse_report.v = wheel_unit();
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else if (code == KC_MS_WH_DOWN) mouse_report.v = wheel_unit() * -1;
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else if (code == KC_MS_WH_LEFT) mouse_report.h = wheel_unit() * -1;
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else if (code == KC_MS_WH_RIGHT) mouse_report.h = wheel_unit();
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else if (code == KC_MS_BTN1) mouse_report.buttons |= MOUSE_BTN1;
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else if (code == KC_MS_BTN2) mouse_report.buttons |= MOUSE_BTN2;
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else if (code == KC_MS_BTN3) mouse_report.buttons |= MOUSE_BTN3;
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else if (code == KC_MS_BTN4) mouse_report.buttons |= MOUSE_BTN4;
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else if (code == KC_MS_BTN5) mouse_report.buttons |= MOUSE_BTN5;
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else if (code == KC_MS_ACCEL0) mousekey_accel |= (1<<0);
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else if (code == KC_MS_ACCEL1) mousekey_accel |= (1<<1);
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else if (code == KC_MS_ACCEL2) mousekey_accel |= (1<<2);
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}
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void mousekey_off(uint8_t code)
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{
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if (code == KC_MS_UP && mouse_report.y < 0) mouse_report.y = 0;
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else if (code == KC_MS_DOWN && mouse_report.y > 0) mouse_report.y = 0;
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else if (code == KC_MS_LEFT && mouse_report.x < 0) mouse_report.x = 0;
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else if (code == KC_MS_RIGHT && mouse_report.x > 0) mouse_report.x = 0;
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else if (code == KC_MS_WH_UP && mouse_report.v > 0) mouse_report.v = 0;
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else if (code == KC_MS_WH_DOWN && mouse_report.v < 0) mouse_report.v = 0;
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else if (code == KC_MS_WH_LEFT && mouse_report.h < 0) mouse_report.h = 0;
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else if (code == KC_MS_WH_RIGHT && mouse_report.h > 0) mouse_report.h = 0;
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else if (code == KC_MS_BTN1) mouse_report.buttons &= ~MOUSE_BTN1;
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else if (code == KC_MS_BTN2) mouse_report.buttons &= ~MOUSE_BTN2;
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else if (code == KC_MS_BTN3) mouse_report.buttons &= ~MOUSE_BTN3;
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else if (code == KC_MS_BTN4) mouse_report.buttons &= ~MOUSE_BTN4;
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else if (code == KC_MS_BTN5) mouse_report.buttons &= ~MOUSE_BTN5;
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else if (code == KC_MS_ACCEL0) mousekey_accel &= ~(1<<0);
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else if (code == KC_MS_ACCEL1) mousekey_accel &= ~(1<<1);
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else if (code == KC_MS_ACCEL2) mousekey_accel &= ~(1<<2);
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if (mouse_report.x == 0 && mouse_report.y == 0 && mouse_report.v == 0 && mouse_report.h == 0)
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mousekey_repeat = 0;
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}
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void mousekey_send(void)
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{
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mousekey_debug();
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host_mouse_send(&mouse_report);
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last_timer = timer_read();
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}
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void mousekey_clear(void)
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{
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mouse_report = (report_mouse_t){};
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mousekey_repeat = 0;
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mousekey_accel = 0;
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}
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static void mousekey_debug(void)
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{
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if (!debug_mouse) return;
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print("mousekey [btn|x y v h](rep/acl): [");
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phex(mouse_report.buttons); print("|");
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print_decs(mouse_report.x); print(" ");
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print_decs(mouse_report.y); print(" ");
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print_decs(mouse_report.v); print(" ");
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print_decs(mouse_report.h); print("](");
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print_dec(mousekey_repeat); print("/");
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print_dec(mousekey_accel); print(")\n");
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}
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