common/mousekey.c

   1 /*
   2 Copyright 2011 Jun Wako <wakojun@gmail.com>
   3
   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.
   8
   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.
  13
  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/>.
  16 */
  17
  18 #include <stdint.h>
  19 #include "keycode.h"
  20 #include "host.h"
  21 #include "timer.h"
  22 #include "print.h"
  23 #include "debug.h"
  24 #include "mousekey.h"
  25
  26
  27
  28 static report_mouse_t mouse_report = {};
  29 static uint8_t mousekey_repeat =  0;
  30 static uint8_t mousekey_accel = 0;
  31
  32 static void mousekey_debug(void);
  33
  34
  35 /*
  36  * Mouse keys  acceleration algorithm
  37  *  http://en.wikipedia.org/wiki/Mouse_keys
  38  *
  39  *  speed = delta * max_speed * (repeat / time_to_max)**((1000+curve)/1000)
  40  */
  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;
  51 /* wheel params */
  52 uint8_t mk_wheel_max_speed = MOUSEKEY_WHEEL_MAX_SPEED;
  53 uint8_t mk_wheel_time_to_max = MOUSEKEY_WHEEL_TIME_TO_MAX;
  54
  55
  56 static uint16_t last_timer = 0;
  57
  58
  59 static uint8_t move_unit(void)
  60 {
  61     uint16_t unit;
  62     if (mousekey_accel & (1<<0)) {
  63         unit = (MOUSEKEY_MOVE_DELTA * mk_max_speed)/4;
  64     } else if (mousekey_accel & (1<<1)) {
  65         unit = (MOUSEKEY_MOVE_DELTA * mk_max_speed)/2;
  66     } else if (mousekey_accel & (1<<2)) {
  67         unit = (MOUSEKEY_MOVE_DELTA * mk_max_speed);
  68     } else if (mousekey_repeat == 0) {
  69         unit = MOUSEKEY_MOVE_DELTA;
  70     } else if (mousekey_repeat >= mk_time_to_max) {
  71         unit = MOUSEKEY_MOVE_DELTA * mk_max_speed;
  72     } else {
  73         unit = (MOUSEKEY_MOVE_DELTA * mk_max_speed * mousekey_repeat) / mk_time_to_max;
  74     }
  75     return (unit > MOUSEKEY_MOVE_MAX ? MOUSEKEY_MOVE_MAX : (unit == 0 ? 1 : unit));
  76 }
  77
  78 static uint8_t wheel_unit(void)
  79 {
  80     uint16_t unit;
  81     if (mousekey_accel & (1<<0)) {
  82         unit = (MOUSEKEY_WHEEL_DELTA * mk_wheel_max_speed)/4;
  83     } else if (mousekey_accel & (1<<1)) {
  84         unit = (MOUSEKEY_WHEEL_DELTA * mk_wheel_max_speed)/2;
  85     } else if (mousekey_accel & (1<<2)) {
  86         unit = (MOUSEKEY_WHEEL_DELTA * mk_wheel_max_speed);
  87     } else if (mousekey_repeat == 0) {
  88         unit = MOUSEKEY_WHEEL_DELTA;
  89     } else if (mousekey_repeat >= mk_wheel_time_to_max) {
  90         unit = MOUSEKEY_WHEEL_DELTA * mk_wheel_max_speed;
  91     } else {
  92         unit = (MOUSEKEY_WHEEL_DELTA * mk_wheel_max_speed * mousekey_repeat) / mk_wheel_time_to_max;
  93     }
  94     return (unit > MOUSEKEY_WHEEL_MAX ? MOUSEKEY_WHEEL_MAX : (unit == 0 ? 1 : unit));
  95 }
  96
  97 void mousekey_task(void)
  98 {
  99     if (timer_elapsed(last_timer) < (mousekey_repeat ? mk_interval : mk_delay*10))
 100         return;
 101
 102     if (mouse_report.x == 0 && mouse_report.y == 0 && mouse_report.v == 0 && mouse_report.h == 0)
 103         return;
 104
 105     if (mousekey_repeat != UINT8_MAX)
 106         mousekey_repeat++;
 107
 108
 109     if (mouse_report.x > 0) mouse_report.x = move_unit();
 110     if (mouse_report.x < 0) mouse_report.x = move_unit() * -1;
 111     if (mouse_report.y > 0) mouse_report.y = move_unit();
 112     if (mouse_report.y < 0) mouse_report.y = move_unit() * -1;
 113
 114     /* diagonal move [1/sqrt(2) = 0.7] */
 115     if (mouse_report.x && mouse_report.y) {
 116         mouse_report.x *= 0.7;
 117         mouse_report.y *= 0.7;
 118     }
 119
 120     if (mouse_report.v > 0) mouse_report.v = wheel_unit();
 121     if (mouse_report.v < 0) mouse_report.v = wheel_unit() * -1;
 122     if (mouse_report.h > 0) mouse_report.h = wheel_unit();
 123     if (mouse_report.h < 0) mouse_report.h = wheel_unit() * -1;
 124
 125     mousekey_send();
 126 }
 127
 128 void mousekey_on(uint8_t code)
 129 {
 130     if      (code == KC_MS_UP)       mouse_report.y = move_unit() * -1;
 131     else if (code == KC_MS_DOWN)     mouse_report.y = move_unit();
 132     else if (code == KC_MS_LEFT)     mouse_report.x = move_unit() * -1;
 133     else if (code == KC_MS_RIGHT)    mouse_report.x = move_unit();
 134     else if (code == KC_MS_WH_UP)    mouse_report.v = wheel_unit();
 135     else if (code == KC_MS_WH_DOWN)  mouse_report.v = wheel_unit() * -1;
 136     else if (code == KC_MS_WH_LEFT)  mouse_report.h = wheel_unit() * -1;
 137     else if (code == KC_MS_WH_RIGHT) mouse_report.h = wheel_unit();
 138     else if (code == KC_MS_BTN1)     mouse_report.buttons |= MOUSE_BTN1;
 139     else if (code == KC_MS_BTN2)     mouse_report.buttons |= MOUSE_BTN2;
 140     else if (code == KC_MS_BTN3)     mouse_report.buttons |= MOUSE_BTN3;
 141     else if (code == KC_MS_BTN4)     mouse_report.buttons |= MOUSE_BTN4;
 142     else if (code == KC_MS_BTN5)     mouse_report.buttons |= MOUSE_BTN5;
 143     else if (code == KC_MS_ACCEL0)   mousekey_accel |= (1<<0);
 144     else if (code == KC_MS_ACCEL1)   mousekey_accel |= (1<<1);
 145     else if (code == KC_MS_ACCEL2)   mousekey_accel |= (1<<2);
 146 }
 147
 148 void mousekey_off(uint8_t code)
 149 {
 150     if      (code == KC_MS_UP       && mouse_report.y < 0) mouse_report.y = 0;
 151     else if (code == KC_MS_DOWN     && mouse_report.y > 0) mouse_report.y = 0;
 152     else if (code == KC_MS_LEFT     && mouse_report.x < 0) mouse_report.x = 0;
 153     else if (code == KC_MS_RIGHT    && mouse_report.x > 0) mouse_report.x = 0;
 154     else if (code == KC_MS_WH_UP    && mouse_report.v > 0) mouse_report.v = 0;
 155     else if (code == KC_MS_WH_DOWN  && mouse_report.v < 0) mouse_report.v = 0;
 156     else if (code == KC_MS_WH_LEFT  && mouse_report.h < 0) mouse_report.h = 0;
 157     else if (code == KC_MS_WH_RIGHT && mouse_report.h > 0) mouse_report.h = 0;
 158     else if (code == KC_MS_BTN1) mouse_report.buttons &= ~MOUSE_BTN1;
 159     else if (code == KC_MS_BTN2) mouse_report.buttons &= ~MOUSE_BTN2;
 160     else if (code == KC_MS_BTN3) mouse_report.buttons &= ~MOUSE_BTN3;
 161     else if (code == KC_MS_BTN4) mouse_report.buttons &= ~MOUSE_BTN4;
 162     else if (code == KC_MS_BTN5) mouse_report.buttons &= ~MOUSE_BTN5;
 163     else if (code == KC_MS_ACCEL0) mousekey_accel &= ~(1<<0);
 164     else if (code == KC_MS_ACCEL1) mousekey_accel &= ~(1<<1);
 165     else if (code == KC_MS_ACCEL2) mousekey_accel &= ~(1<<2);
 166
 167     if (mouse_report.x == 0 && mouse_report.y == 0 && mouse_report.v == 0 && mouse_report.h == 0)
 168         mousekey_repeat = 0;
 169 }
 170
 171 void mousekey_send(void)
 172 {
 173     mousekey_debug();
 174     host_mouse_send(&mouse_report);
 175     last_timer = timer_read();
 176 }
 177
 178 void mousekey_clear(void)
 179 {
 180     mouse_report = (report_mouse_t){};
 181     mousekey_repeat = 0;
 182     mousekey_accel = 0;
 183 }
 184
 185 static void mousekey_debug(void)
 186 {
 187     if (!debug_mouse) return;
 188     print("mousekey [btn|x y v h](rep/acl): [");
 189     phex(mouse_report.buttons); print("|");
 190     print_decs(mouse_report.x); print(" ");
 191     print_decs(mouse_report.y); print(" ");
 192     print_decs(mouse_report.v); print(" ");
 193     print_decs(mouse_report.h); print("](");
 194     print_dec(mousekey_repeat); print("/");
 195     print_dec(mousekey_accel); print(")\n");
 196 }