added initial support of mousekeys to ps2_vusb

1 files changed, 102 insertions, 0 deletions

diff --git a/ps2_vusb/mousekey.c b/ps2_vusb/mousekey.c
new file mode 100644
index 000000000..a311eecc2
--- /dev/null
+++ b/ps2_vusb/mousekey.c
@@ -0,0 +1,102 @@
+#include <stdint.h>
+#include <util/delay.h>
+#include "usb_keycodes.h"
+#include "host.h"
+#include "timer.h"
+#include "print.h"
+#include "mousekey.h"
+
+
+static report_mouse_t report;
+static report_mouse_t report_prev;
+
+static uint8_t mousekey_repeat =  0;
+
+
+/*
+ * TODO: fix acceleration algorithm
+ * see wikipedia http://en.wikipedia.org/wiki/Mouse_keys
+ */
+#ifndef MOUSEKEY_DELAY_TIME
+#   define MOUSEKEY_DELAY_TIME 255
+#endif
+
+
+static inline uint8_t move_unit(void)
+{
+    uint8_t unit = (10 + (mousekey_repeat));
+    return unit > 127 ? 127 : 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_prev.x ||
+            report.y != report_prev.y ||
+            report.x || report.y);
+    //return (report.buttons != report_prev.buttons || report.x || report.y);
+}
+
+void mousekey_send(void)
+{
+    static uint16_t last_timer = 0;
+
+    if (!mousekey_changed()) {
+        mousekey_repeat = 0;
+        return;
+    }
+
+    // send immediately when buttun state is changed
+    if (report.buttons == report_prev.buttons) {
+        // TODO: delay parameter setting
+        if ((timer_elapsed(last_timer) < (mousekey_repeat == 1 ? 20 : 5))) {
+            return;
+        }
+    }
+
+    if (report.x && report.y) {
+        report.x *= 0.7;
+        report.y *= 0.7;
+    }
+
+    /*
+    print("mousekey_repeat: "); phex(mousekey_repeat); print("\n");
+    print("timer: "); phex16(timer_read()); print("\n");
+    print("last_timer: "); phex16(last_timer); print("\n");
+    print("mousekey: "); phex(report.buttons); print(" "); phex(report.x); print(" "); phex(report.y); print("\n");
+    */
+
+    host_mouse_send(&report);
+    report_prev.buttons = report.buttons;
+    report_prev.x = report.x;
+    report_prev.y = report.y;
+    if (mousekey_repeat != 0xFF) mousekey_repeat++;
+    last_timer = timer_read();
+    mousekey_clear_report();
+}
+
+void mousekey_clear_report(void)
+{
+    report.buttons = 0;
+    report.x = 0;
+    report.y = 0;
+}