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 static report_mouse_t report;
  29
  30 static uint8_t mousekey_repeat =  0;
  31
  32 static void mousekey_debug(void);
  33
  34
  35 /*
  36  * TODO: fix acceleration algorithm
  37  * see wikipedia http://en.wikipedia.org/wiki/Mouse_keys
  38  */
  39 #ifndef MOUSEKEY_DELAY_TIME
  40 #   define MOUSEKEY_DELAY_TIME 100
  41 #endif
  42
  43 #define MOUSEKEY_MOVE_INIT      5
  44 #define MOUSEKEY_WHEEL_INIT     1
  45 #define MOUSEKEY_MOVE_ACCEL     5
  46 #define MOUSEKEY_WHEEL_ACCEL    1
  47
  48 static uint16_t last_timer = 0;
  49
  50 // acceleration parameters
  51 //uint8_t mousekey_move_unit = 2;
  52 //uint8_t mousekey_resolution = 5;
  53
  54
  55 static inline uint8_t move_unit(void)
  56 {
  57     uint16_t unit = MOUSEKEY_MOVE_INIT + MOUSEKEY_MOVE_ACCEL * mousekey_repeat;
  58     return (unit > 63 ? 63 : unit);
  59 }
  60
  61 static inline uint8_t wheel_unit(void)
  62 {
  63     uint16_t unit = MOUSEKEY_WHEEL_INIT + MOUSEKEY_WHEEL_ACCEL * mousekey_repeat;
  64     return (unit > 15 ? 15 : unit);
  65 }
  66
  67 void mousekey_task(void)
  68 {
  69     if (timer_elapsed(last_timer) < MOUSEKEY_DELAY_TIME)
  70         return;
  71
  72     if (report.x == 0 && report.y == 0 && report.v == 0 && report.h == 0)
  73         return;
  74
  75     if (mousekey_repeat != UINT8_MAX)
  76         mousekey_repeat++;
  77
  78
  79     if (report.x > 0) report.x = move_unit();
  80     if (report.x < 0) report.x = move_unit() * -1;
  81     if (report.y > 0) report.y = move_unit();
  82     if (report.y < 0) report.y = move_unit() * -1;
  83
  84     if (report.x && report.y) {
  85         report.x *= 0.7;
  86         report.y *= 0.7;
  87     }
  88
  89     if (report.v > 0) report.v = wheel_unit();
  90     if (report.v < 0) report.v = wheel_unit() * -1;
  91     if (report.h > 0) report.h = wheel_unit();
  92     if (report.h < 0) report.h = wheel_unit() * -1;
  93
  94     mousekey_send();
  95 }
  96
  97 void mousekey_on(uint8_t code)
  98 {
  99     if      (code == KC_MS_UP)       report.y = MOUSEKEY_MOVE_INIT * -1;
 100     else if (code == KC_MS_DOWN)     report.y = MOUSEKEY_MOVE_INIT;
 101     else if (code == KC_MS_LEFT)     report.x = MOUSEKEY_MOVE_INIT * -1;
 102     else if (code == KC_MS_RIGHT)    report.x = MOUSEKEY_MOVE_INIT;
 103     else if (code == KC_MS_WH_UP)    report.v = MOUSEKEY_WHEEL_INIT;
 104     else if (code == KC_MS_WH_DOWN)  report.v = MOUSEKEY_WHEEL_INIT * -1;
 105     else if (code == KC_MS_WH_LEFT)  report.h = MOUSEKEY_WHEEL_INIT * -1;
 106     else if (code == KC_MS_WH_RIGHT) report.h = MOUSEKEY_WHEEL_INIT;
 107     else if (code == KC_MS_BTN1)     report.buttons |= MOUSE_BTN1;
 108     else if (code == KC_MS_BTN2)     report.buttons |= MOUSE_BTN2;
 109     else if (code == KC_MS_BTN3)     report.buttons |= MOUSE_BTN3;
 110     else if (code == KC_MS_BTN4)     report.buttons |= MOUSE_BTN4;
 111     else if (code == KC_MS_BTN5)     report.buttons |= MOUSE_BTN5;
 112 }
 113
 114 void mousekey_off(uint8_t code)
 115 {
 116     if      (code == KC_MS_UP       && report.y < 0) report.y = 0;
 117     else if (code == KC_MS_DOWN     && report.y > 0) report.y = 0;
 118     else if (code == KC_MS_LEFT     && report.x < 0) report.x = 0;
 119     else if (code == KC_MS_RIGHT    && report.x > 0) report.x = 0;
 120     else if (code == KC_MS_WH_UP    && report.v > 0) report.v = 0;
 121     else if (code == KC_MS_WH_DOWN  && report.v < 0) report.v = 0;
 122     else if (code == KC_MS_WH_LEFT  && report.h < 0) report.h = 0;
 123     else if (code == KC_MS_WH_RIGHT && report.h > 0) report.h = 0;
 124     else if (code == KC_MS_BTN1)                     report.buttons &= ~MOUSE_BTN1;
 125     else if (code == KC_MS_BTN2)                     report.buttons &= ~MOUSE_BTN2;
 126     else if (code == KC_MS_BTN3)                     report.buttons &= ~MOUSE_BTN3;
 127     else if (code == KC_MS_BTN4)                     report.buttons &= ~MOUSE_BTN4;
 128     else if (code == KC_MS_BTN5)                     report.buttons &= ~MOUSE_BTN5;
 129
 130     if (report.x == 0 && report.y == 0 && report.v == 0 && report.h == 0)
 131         mousekey_repeat = 0;
 132 }
 133
 134 void mousekey_send(void)
 135 {
 136     mousekey_debug();
 137     host_mouse_send(&report);
 138     last_timer = timer_read();
 139 }
 140
 141 void mousekey_clear(void)
 142 {
 143     report = (report_mouse_t){};
 144 }
 145
 146 static void mousekey_debug(void)
 147 {
 148     if (!debug_mouse) return;
 149     print("mousekey [btn|x y v h]rep: [");
 150     phex(report.buttons); print("|");
 151     phex(report.x); print(" ");
 152     phex(report.y); print(" ");
 153     phex(report.v); print(" ");
 154     phex(report.h); print("]");
 155     phex(mousekey_repeat);
 156     print("\n");
 157 }