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#include <stdint.h>
#include <util/delay.h>
#include "usb_keycodes.h"
#include "host.h"
#include "timer.h"
#include "print.h"
#include "debug.h"
#include "mousekey.h"
static report_mouse_t report;
static report_mouse_t report_prev;
static uint8_t mousekey_repeat = 0;
static void mousekey_debug(void);
/*
* TODO: fix acceleration algorithm
* see wikipedia http://en.wikipedia.org/wiki/Mouse_keys
*/
#ifndef MOUSEKEY_DELAY_TIME
# define MOUSEKEY_DELAY_TIME 255
#endif
// acceleration parameters
uint8_t mousekey_move_unit = 2;
uint8_t mousekey_resolution = 5;
static inline uint8_t move_unit(void)
{
uint16_t unit = 5 + mousekey_repeat*2;
return (unit > 63 ? 63 : unit);
}
void mousekey_decode(uint8_t code)
{
if (code == KB_MS_UP) report.y = -move_unit();
else if (code == KB_MS_DOWN) report.y = move_unit();
else if (code == KB_MS_LEFT) report.x = -move_unit();
else if (code == KB_MS_RIGHT) report.x = move_unit();
else if (code == KB_MS_BTN1) report.buttons |= MOUSE_BTN1;
else if (code == KB_MS_BTN2) report.buttons |= MOUSE_BTN2;
else if (code == KB_MS_BTN3) report.buttons |= MOUSE_BTN3;
else if (code == KB_MS_BTN4) report.buttons |= MOUSE_BTN4;
else if (code == KB_MS_BTN5) report.buttons |= MOUSE_BTN5;
else if (code == KB_MS_WH_UP) report.v += 1;
else if (code == KB_MS_WH_DOWN) report.v -= 1;
else if (code == KB_MS_WH_LEFT) report.h -= 1;
else if (code == KB_MS_WH_RIGHT)report.h += 1;
}
bool mousekey_changed(void)
{
return (report.buttons != report_prev.buttons ||
report.x || report.y || report.v || report.h);
}
void mousekey_send(void)
{
static uint16_t last_timer = 0;
if (!mousekey_changed()) {
mousekey_repeat = 0;
mousekey_clear_report();
return;
}
// send immediately when buttun state is changed
if (report.buttons == report_prev.buttons) {
if (timer_elapsed(last_timer) < 5) {
mousekey_clear_report();
return;
}
}
if (mousekey_repeat != 0xFF) {
mousekey_repeat++;
}
if (report.x && report.y) {
report.x *= 0.7;
report.y *= 0.7;
}
mousekey_debug();
host_mouse_send(&report);
report_prev = report;
last_timer = timer_read();
mousekey_clear_report();
}
void mousekey_clear_report(void)
{
report.buttons = 0;
report.x = 0;
report.y = 0;
report.v = 0;
report.h = 0;
}
static void mousekey_debug(void)
{
if (!debug_mouse) return;
print("mousekey[btn|x y v h]: ");
phex(report.buttons); print("|");
phex(report.x); print(" ");
phex(report.y); print(" ");
phex(report.v); print(" ");
phex(report.h);
phex(mousekey_repeat);
print("\n");
}
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