2 Copyright 2011 Jun Wako <wakojun@gmail.com>
4 This program is free software: you can redistribute it and/or modify
5 it under the terms of the GNU General Public License as published by
6 the Free Software Foundation, either version 2 of the License, or
7 (at your option) any later version.
9 This program is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 GNU General Public License for more details.
14 You should have received a copy of the GNU General Public License
15 along with this program. If not, see <http://www.gnu.org/licenses/>.
28 static report_mouse_t mouse_report = {};
29 static uint8_t mousekey_repeat = 0;
30 static uint8_t mousekey_accel = 0;
32 static void mousekey_debug(void);
36 * Mouse keys acceleration algorithm
37 * http://en.wikipedia.org/wiki/Mouse_keys
39 * speed = delta * max_speed * (repeat / time_to_max)**((1000+curve)/1000)
41 /* milliseconds between the initial key press and first repeated motion event (0-2550) */
42 uint8_t mk_delay = MOUSEKEY_DELAY/10;
43 /* milliseconds between repeated motion events (0-255) */
44 uint8_t mk_interval = MOUSEKEY_INTERVAL;
45 /* steady speed (in action_delta units) applied each event (0-255) */
46 uint8_t mk_max_speed = MOUSEKEY_MAX_SPEED;
47 /* number of events (count) accelerating to steady speed (0-255) */
48 uint8_t mk_time_to_max = MOUSEKEY_TIME_TO_MAX;
49 /* ramp used to reach maximum pointer speed (NOT SUPPORTED) */
50 //int8_t mk_curve = 0;
52 uint8_t mk_wheel_max_speed = MOUSEKEY_WHEEL_MAX_SPEED;
53 uint8_t mk_wheel_time_to_max = MOUSEKEY_WHEEL_TIME_TO_MAX;
56 static uint16_t last_timer = 0;
58 inline int8_t times_inv_sqrt2(int8_t x)
60 // 181/256 is pretty close to 1/sqrt(2)
61 // 0.70703125 0.707106781
62 // 1 too small for x=99 and x=198
63 // This ends up being a mult and discard lower 8 bits
64 return (x * 181) >> 8;
67 static uint8_t move_unit(void)
70 if (mousekey_accel & (1<<0)) {
71 unit = (MOUSEKEY_MOVE_DELTA * mk_max_speed)/4;
72 } else if (mousekey_accel & (1<<1)) {
73 unit = (MOUSEKEY_MOVE_DELTA * mk_max_speed)/2;
74 } else if (mousekey_accel & (1<<2)) {
75 unit = (MOUSEKEY_MOVE_DELTA * mk_max_speed);
76 } else if (mousekey_repeat == 0) {
77 unit = MOUSEKEY_MOVE_DELTA;
78 } else if (mousekey_repeat >= mk_time_to_max) {
79 unit = MOUSEKEY_MOVE_DELTA * mk_max_speed;
81 unit = (MOUSEKEY_MOVE_DELTA * mk_max_speed * mousekey_repeat) / mk_time_to_max;
83 return (unit > MOUSEKEY_MOVE_MAX ? MOUSEKEY_MOVE_MAX : (unit == 0 ? 1 : unit));
86 static uint8_t wheel_unit(void)
89 if (mousekey_accel & (1<<0)) {
90 unit = (MOUSEKEY_WHEEL_DELTA * mk_wheel_max_speed)/4;
91 } else if (mousekey_accel & (1<<1)) {
92 unit = (MOUSEKEY_WHEEL_DELTA * mk_wheel_max_speed)/2;
93 } else if (mousekey_accel & (1<<2)) {
94 unit = (MOUSEKEY_WHEEL_DELTA * mk_wheel_max_speed);
95 } else if (mousekey_repeat == 0) {
96 unit = MOUSEKEY_WHEEL_DELTA;
97 } else if (mousekey_repeat >= mk_wheel_time_to_max) {
98 unit = MOUSEKEY_WHEEL_DELTA * mk_wheel_max_speed;
100 unit = (MOUSEKEY_WHEEL_DELTA * mk_wheel_max_speed * mousekey_repeat) / mk_wheel_time_to_max;
102 return (unit > MOUSEKEY_WHEEL_MAX ? MOUSEKEY_WHEEL_MAX : (unit == 0 ? 1 : unit));
105 void mousekey_task(void)
107 if (timer_elapsed(last_timer) < (mousekey_repeat ? mk_interval : mk_delay*10))
110 if (mouse_report.x == 0 && mouse_report.y == 0 && mouse_report.v == 0 && mouse_report.h == 0)
113 if (mousekey_repeat != UINT8_MAX)
117 if (mouse_report.x > 0) mouse_report.x = move_unit();
118 if (mouse_report.x < 0) mouse_report.x = move_unit() * -1;
119 if (mouse_report.y > 0) mouse_report.y = move_unit();
120 if (mouse_report.y < 0) mouse_report.y = move_unit() * -1;
122 /* diagonal move [1/sqrt(2)] */
123 if (mouse_report.x && mouse_report.y) {
124 mouse_report.x = times_inv_sqrt2(mouse_report.x);
125 mouse_report.y = times_inv_sqrt2(mouse_report.y);
128 if (mouse_report.v > 0) mouse_report.v = wheel_unit();
129 if (mouse_report.v < 0) mouse_report.v = wheel_unit() * -1;
130 if (mouse_report.h > 0) mouse_report.h = wheel_unit();
131 if (mouse_report.h < 0) mouse_report.h = wheel_unit() * -1;
136 void mousekey_on(uint8_t code)
138 if (code == KC_MS_UP) mouse_report.y = move_unit() * -1;
139 else if (code == KC_MS_DOWN) mouse_report.y = move_unit();
140 else if (code == KC_MS_LEFT) mouse_report.x = move_unit() * -1;
141 else if (code == KC_MS_RIGHT) mouse_report.x = move_unit();
142 else if (code == KC_MS_WH_UP) mouse_report.v = wheel_unit();
143 else if (code == KC_MS_WH_DOWN) mouse_report.v = wheel_unit() * -1;
144 else if (code == KC_MS_WH_LEFT) mouse_report.h = wheel_unit() * -1;
145 else if (code == KC_MS_WH_RIGHT) mouse_report.h = wheel_unit();
146 else if (code == KC_MS_BTN1) mouse_report.buttons |= MOUSE_BTN1;
147 else if (code == KC_MS_BTN2) mouse_report.buttons |= MOUSE_BTN2;
148 else if (code == KC_MS_BTN3) mouse_report.buttons |= MOUSE_BTN3;
149 else if (code == KC_MS_BTN4) mouse_report.buttons |= MOUSE_BTN4;
150 else if (code == KC_MS_BTN5) mouse_report.buttons |= MOUSE_BTN5;
151 else if (code == KC_MS_ACCEL0) mousekey_accel |= (1<<0);
152 else if (code == KC_MS_ACCEL1) mousekey_accel |= (1<<1);
153 else if (code == KC_MS_ACCEL2) mousekey_accel |= (1<<2);
156 void mousekey_off(uint8_t code)
158 if (code == KC_MS_UP && mouse_report.y < 0) mouse_report.y = 0;
159 else if (code == KC_MS_DOWN && mouse_report.y > 0) mouse_report.y = 0;
160 else if (code == KC_MS_LEFT && mouse_report.x < 0) mouse_report.x = 0;
161 else if (code == KC_MS_RIGHT && mouse_report.x > 0) mouse_report.x = 0;
162 else if (code == KC_MS_WH_UP && mouse_report.v > 0) mouse_report.v = 0;
163 else if (code == KC_MS_WH_DOWN && mouse_report.v < 0) mouse_report.v = 0;
164 else if (code == KC_MS_WH_LEFT && mouse_report.h < 0) mouse_report.h = 0;
165 else if (code == KC_MS_WH_RIGHT && mouse_report.h > 0) mouse_report.h = 0;
166 else if (code == KC_MS_BTN1) mouse_report.buttons &= ~MOUSE_BTN1;
167 else if (code == KC_MS_BTN2) mouse_report.buttons &= ~MOUSE_BTN2;
168 else if (code == KC_MS_BTN3) mouse_report.buttons &= ~MOUSE_BTN3;
169 else if (code == KC_MS_BTN4) mouse_report.buttons &= ~MOUSE_BTN4;
170 else if (code == KC_MS_BTN5) mouse_report.buttons &= ~MOUSE_BTN5;
171 else if (code == KC_MS_ACCEL0) mousekey_accel &= ~(1<<0);
172 else if (code == KC_MS_ACCEL1) mousekey_accel &= ~(1<<1);
173 else if (code == KC_MS_ACCEL2) mousekey_accel &= ~(1<<2);
175 if (mouse_report.x == 0 && mouse_report.y == 0 && mouse_report.v == 0 && mouse_report.h == 0)
179 void mousekey_send(void)
182 host_mouse_send(&mouse_report);
183 last_timer = timer_read();
186 void mousekey_clear(void)
188 mouse_report = (report_mouse_t){};
193 static void mousekey_debug(void)
195 if (!debug_mouse) return;
196 print("mousekey [btn|x y v h](rep/acl): [");
197 phex(mouse_report.buttons); print("|");
198 print_decs(mouse_report.x); print(" ");
199 print_decs(mouse_report.y); print(" ");
200 print_decs(mouse_report.v); print(" ");
201 print_decs(mouse_report.h); print("](");
202 print_dec(mousekey_repeat); print("/");
203 print_dec(mousekey_accel); print(")\n");