mousekey.c

   1 #include <stdint.h>
   2 #include <util/delay.h>
   3 #include "usb_keycodes.h"
   4 #include "host.h"
   5 #include "timer.h"
   6 #include "print.h"
   7 #include "debug.h"
   8 #include "mousekey.h"
   9
  10
  11 static report_mouse_t report;
  12 static report_mouse_t report_prev;
  13
  14 static uint8_t mousekey_repeat =  0;
  15
  16 static void mousekey_debug(void);
  17
  18
  19 /*
  20  * TODO: fix acceleration algorithm
  21  * see wikipedia http://en.wikipedia.org/wiki/Mouse_keys
  22  */
  23 #ifndef MOUSEKEY_DELAY_TIME
  24 #   define MOUSEKEY_DELAY_TIME 255
  25 #endif
  26
  27
  28 static inline uint8_t move_unit(void)
  29 {
  30     uint16_t unit = 10 + (mousekey_repeat);
  31     return (unit > 127 ? 127 : unit);
  32 }
  33
  34 void mousekey_decode(uint8_t code)
  35 {
  36     if      (code == KB_MS_UP)      report.y = -move_unit();
  37     else if (code == KB_MS_DOWN)    report.y = move_unit();
  38     else if (code == KB_MS_LEFT)    report.x = -move_unit();
  39     else if (code == KB_MS_RIGHT)   report.x = move_unit();
  40     else if (code == KB_MS_BTN1)    report.buttons |= MOUSE_BTN1;
  41     else if (code == KB_MS_BTN2)    report.buttons |= MOUSE_BTN2;
  42     else if (code == KB_MS_BTN3)    report.buttons |= MOUSE_BTN3;
  43 /*
  44     else if (code == KB_MS_BTN4)    report.buttons |= MOUSE_BTN4;
  45     else if (code == KB_MS_BTN5)    report.buttons |= MOUSE_BTN5;
  46     else if (code == KB_MS_WH_UP)   report.v += 1;
  47     else if (code == KB_MS_WH_DOWN) report.v -= 1;
  48     else if (code == KB_MS_WH_LEFT) report.h -= 1;
  49     else if (code == KB_MS_WH_RIGHT)report.h += 1;
  50 */
  51 }
  52
  53 bool mousekey_changed(void)
  54 {
  55     return (report.buttons != report_prev.buttons ||
  56             report.x != report_prev.x ||
  57             report.y != report_prev.y ||
  58             report.x || report.y);
  59     //return (report.buttons != report_prev.buttons || report.x || report.y);
  60 }
  61
  62 void mousekey_send(void)
  63 {
  64     static uint16_t last_timer = 0;
  65
  66     if (!mousekey_changed()) {
  67         mousekey_repeat = 0;
  68         return;
  69     }
  70
  71     // send immediately when buttun state is changed
  72     if (report.buttons == report_prev.buttons) {
  73         // TODO: delay parameter setting
  74         if ((timer_elapsed(last_timer) < (mousekey_repeat == 1 ? 20 : 5))) {
  75             return;
  76         }
  77     }
  78
  79     if (report.x && report.y) {
  80         report.x *= 0.7;
  81         report.y *= 0.7;
  82     }
  83
  84     /*
  85     print("mousekey_repeat: "); phex(mousekey_repeat); print("\n");
  86     print("timer: "); phex16(timer_read()); print("\n");
  87     print("last_timer: "); phex16(last_timer); print("\n");
  88     print("mousekey: "); phex(report.buttons); print(" "); phex(report.x); print(" "); phex(report.y); print("\n");
  89     */
  90
  91     mousekey_debug();
  92
  93     host_mouse_send(&report);
  94     report_prev.buttons = report.buttons;
  95     report_prev.x = report.x;
  96     report_prev.y = report.y;
  97     if (mousekey_repeat != 0xFF) mousekey_repeat++;
  98     last_timer = timer_read();
  99     mousekey_clear_report();
 100 }
 101
 102 void mousekey_clear_report(void)
 103 {
 104     report.buttons = 0;
 105     report.x = 0;
 106     report.y = 0;
 107 }
 108
 109 static void mousekey_debug(void)
 110 {
 111     if (!debug_mouse) return;
 112     print("mousekey[btn|x y v h]: ");
 113     phex(report.buttons); print("|");
 114     phex(report.x); print(" ");
 115     phex(report.y); print(" ");
 116 /*
 117     phex(report.v); print(" ");
 118     phex(report.h);
 119 */
 120     print("\n");
 121 }