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 <util/delay.h>
  20 #include "keycode.h"
  21 #include "host.h"
  22 #include "timer.h"
  23 #include "print.h"
  24 #include "debug.h"
  25 #include "mousekey.h"
  26
  27
  28
  29 static report_mouse_t mouse_report = {};
  30 static uint8_t mousekey_repeat =  0;
  31 static uint8_t mousekey_accel = 0;
  32
  33 static void mousekey_debug(void);
  34
  35
  36 /*
  37  * Mouse keys  acceleration algorithm
  38  *  http://en.wikipedia.org/wiki/Mouse_keys
  39  *
  40  *  speed = delta * max_speed * (repeat / time_to_max)**((1000+curve)/1000)
  41  */
  42 /* milliseconds between the initial key press and first repeated motion event (0-2550) */
  43 uint8_t mk_delay = MOUSEKEY_DELAY/10;
  44 /* milliseconds between repeated motion events (0-255) */
  45 uint8_t mk_interval = MOUSEKEY_INTERVAL;
  46 /* steady speed (in action_delta units) applied each event (0-255) */
  47 uint8_t mk_max_speed = MOUSEKEY_MAX_SPEED;
  48 /* number of events (count) accelerating to steady speed (0-255) */
  49 uint8_t mk_time_to_max = MOUSEKEY_TIME_TO_MAX;
  50 /* ramp used to reach maximum pointer speed (NOT SUPPORTED) */
  51 //int8_t mk_curve = 0;
  52 /* wheel params */
  53 uint8_t mk_wheel_max_speed = MOUSEKEY_WHEEL_MAX_SPEED;
  54 uint8_t mk_wheel_time_to_max = MOUSEKEY_WHEEL_TIME_TO_MAX;
  55
  56
  57 static uint16_t last_timer = 0;
  58
  59
  60 static uint8_t move_unit(void)
  61 {
  62     uint16_t unit;
  63     if (mousekey_accel & (1<<0)) {
  64         unit = (MOUSEKEY_MOVE_DELTA * mk_max_speed)/4;
  65     } else if (mousekey_accel & (1<<1)) {
  66         unit = (MOUSEKEY_MOVE_DELTA * mk_max_speed)/2;
  67     } else if (mousekey_accel & (1<<2)) {
  68         unit = (MOUSEKEY_MOVE_DELTA * mk_max_speed);
  69     } else if (mousekey_repeat == 0) {
  70         unit = MOUSEKEY_MOVE_DELTA;
  71     } else if (mousekey_repeat >= mk_time_to_max) {
  72         unit = MOUSEKEY_MOVE_DELTA * mk_max_speed;
  73     } else {
  74         unit = (MOUSEKEY_MOVE_DELTA * mk_max_speed * mousekey_repeat) / mk_time_to_max;
  75     }
  76     return (unit > MOUSEKEY_MOVE_MAX ? MOUSEKEY_MOVE_MAX : (unit == 0 ? 1 : unit));
  77 }
  78
  79 static uint8_t wheel_unit(void)
  80 {
  81     uint16_t unit;
  82     if (mousekey_accel & (1<<0)) {
  83         unit = (MOUSEKEY_WHEEL_DELTA * mk_wheel_max_speed)/4;
  84     } else if (mousekey_accel & (1<<1)) {
  85         unit = (MOUSEKEY_WHEEL_DELTA * mk_wheel_max_speed)/2;
  86     } else if (mousekey_accel & (1<<2)) {
  87         unit = (MOUSEKEY_WHEEL_DELTA * mk_wheel_max_speed);
  88     } else if (mousekey_repeat == 0) {
  89         unit = MOUSEKEY_WHEEL_DELTA;
  90     } else if (mousekey_repeat >= mk_wheel_time_to_max) {
  91         unit = MOUSEKEY_WHEEL_DELTA * mk_wheel_max_speed;
  92     } else {
  93         unit = (MOUSEKEY_WHEEL_DELTA * mk_wheel_max_speed * mousekey_repeat) / mk_wheel_time_to_max;
  94     }
  95     return (unit > MOUSEKEY_WHEEL_MAX ? MOUSEKEY_WHEEL_MAX : (unit == 0 ? 1 : unit));
  96 }
  97
  98 void mousekey_task(void)
  99 {
 100     if (timer_elapsed(last_timer) < (mousekey_repeat ? mk_interval : mk_delay*10))
 101         return;
 102
 103     if (mouse_report.x == 0 && mouse_report.y == 0 && mouse_report.v == 0 && mouse_report.h == 0)
 104         return;
 105
 106     if (mousekey_repeat != UINT8_MAX)
 107         mousekey_repeat++;
 108
 109
 110     if (mouse_report.x > 0) mouse_report.x = move_unit();
 111     if (mouse_report.x < 0) mouse_report.x = move_unit() * -1;
 112     if (mouse_report.y > 0) mouse_report.y = move_unit();
 113     if (mouse_report.y < 0) mouse_report.y = move_unit() * -1;
 114
 115     /* diagonal move [1/sqrt(2) = 0.7] */
 116     if (mouse_report.x && mouse_report.y) {
 117         mouse_report.x *= 0.7;
 118         mouse_report.y *= 0.7;
 119     }
 120
 121     if (mouse_report.v > 0) mouse_report.v = wheel_unit();
 122     if (mouse_report.v < 0) mouse_report.v = wheel_unit() * -1;
 123     if (mouse_report.h > 0) mouse_report.h = wheel_unit();
 124     if (mouse_report.h < 0) mouse_report.h = wheel_unit() * -1;
 125
 126     mousekey_send();
 127 }
 128
 129 void mousekey_on(uint8_t code)
 130 {
 131     if      (code == KC_MS_UP)       mouse_report.y = move_unit() * -1;
 132     else if (code == KC_MS_DOWN)     mouse_report.y = move_unit();
 133     else if (code == KC_MS_LEFT)     mouse_report.x = move_unit() * -1;
 134     else if (code == KC_MS_RIGHT)    mouse_report.x = move_unit();
 135     else if (code == KC_MS_WH_UP)    mouse_report.v = wheel_unit();
 136     else if (code == KC_MS_WH_DOWN)  mouse_report.v = wheel_unit() * -1;
 137     else if (code == KC_MS_WH_LEFT)  mouse_report.h = wheel_unit() * -1;
 138     else if (code == KC_MS_WH_RIGHT) mouse_report.h = wheel_unit();
 139     else if (code == KC_MS_BTN1)     mouse_report.buttons |= MOUSE_BTN1;
 140     else if (code == KC_MS_BTN2)     mouse_report.buttons |= MOUSE_BTN2;
 141     else if (code == KC_MS_BTN3)     mouse_report.buttons |= MOUSE_BTN3;
 142     else if (code == KC_MS_BTN4)     mouse_report.buttons |= MOUSE_BTN4;
 143     else if (code == KC_MS_BTN5)     mouse_report.buttons |= MOUSE_BTN5;
 144     else if (code == KC_MS_ACCEL0)   mousekey_accel |= (1<<0);
 145     else if (code == KC_MS_ACCEL1)   mousekey_accel |= (1<<1);
 146     else if (code == KC_MS_ACCEL2)   mousekey_accel |= (1<<2);
 147 }
 148
 149 void mousekey_off(uint8_t code)
 150 {
 151     if      (code == KC_MS_UP       && mouse_report.y < 0) mouse_report.y = 0;
 152     else if (code == KC_MS_DOWN     && mouse_report.y > 0) mouse_report.y = 0;
 153     else if (code == KC_MS_LEFT     && mouse_report.x < 0) mouse_report.x = 0;
 154     else if (code == KC_MS_RIGHT    && mouse_report.x > 0) mouse_report.x = 0;
 155     else if (code == KC_MS_WH_UP    && mouse_report.v > 0) mouse_report.v = 0;
 156     else if (code == KC_MS_WH_DOWN  && mouse_report.v < 0) mouse_report.v = 0;
 157     else if (code == KC_MS_WH_LEFT  && mouse_report.h < 0) mouse_report.h = 0;
 158     else if (code == KC_MS_WH_RIGHT && mouse_report.h > 0) mouse_report.h = 0;
 159     else if (code == KC_MS_BTN1) mouse_report.buttons &= ~MOUSE_BTN1;
 160     else if (code == KC_MS_BTN2) mouse_report.buttons &= ~MOUSE_BTN2;
 161     else if (code == KC_MS_BTN3) mouse_report.buttons &= ~MOUSE_BTN3;
 162     else if (code == KC_MS_BTN4) mouse_report.buttons &= ~MOUSE_BTN4;
 163     else if (code == KC_MS_BTN5) mouse_report.buttons &= ~MOUSE_BTN5;
 164     else if (code == KC_MS_ACCEL0) mousekey_accel &= ~(1<<0);
 165     else if (code == KC_MS_ACCEL1) mousekey_accel &= ~(1<<1);
 166     else if (code == KC_MS_ACCEL2) mousekey_accel &= ~(1<<2);
 167
 168     if (mouse_report.x == 0 && mouse_report.y == 0 && mouse_report.v == 0 && mouse_report.h == 0)
 169         mousekey_repeat = 0;
 170 }
 171
 172 void mousekey_send(void)
 173 {
 174     mousekey_debug();
 175     host_mouse_send(&mouse_report);
 176     last_timer = timer_read();
 177 }
 178
 179 void mousekey_clear(void)
 180 {
 181     mouse_report = (report_mouse_t){};
 182     mousekey_repeat = 0;
 183     mousekey_accel = 0;
 184 }
 185
 186 static void mousekey_debug(void)
 187 {
 188     if (!debug_mouse) return;
 189     print("mousekey [btn|x y v h](rep/acl): [");
 190     phex(mouse_report.buttons); print("|");
 191     print_decs(mouse_report.x); print(" ");
 192     print_decs(mouse_report.y); print(" ");
 193     print_decs(mouse_report.v); print(" ");
 194     print_decs(mouse_report.h); print("](");
 195     print_dec(mousekey_repeat); print("/");
 196     print_dec(mousekey_accel); print(")\n");
 197 }