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