1 files changed, 58 insertions, 0 deletions
diff --git a/quantum/pointing_device_gestures.h b/quantum/pointing_device_gestures.h
new file mode 100644
index 0000000000..d2ea44971b
--- /dev/null
+++ b/quantum/pointing_device_gestures.h
@@ -0,0 +1,58 @@
+/* Copyright 2022 Daniel Kao <daniel.m.kao@gmail.com>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+#pragma once
+
+#include <stdint.h>
+#include "report.h"
+
+#ifdef POINTING_DEVICE_GESTURES_CURSOR_GLIDE_ENABLE
+typedef struct {
+    mouse_xy_report_t dx;
+    mouse_xy_report_t dy;
+    bool              valid;
+} cursor_glide_t;
+
+typedef struct {
+    uint16_t trigger_px; /* Pixels of movement needed to trigger cursor glide */
+    uint16_t coef;       /* Coefficient of friction */
+    uint16_t interval;   /* Glide report interval, in milliseconds */
+} cursor_glide_config_t;
+
+typedef struct {
+    int32_t           v0;
+    int32_t           x;
+    int32_t           y;
+    uint16_t          z;
+    uint16_t          timer;
+    uint16_t          counter;
+    mouse_xy_report_t dx0;
+    mouse_xy_report_t dy0;
+} cursor_glide_status_t;
+
+typedef struct {
+    cursor_glide_config_t config;
+    cursor_glide_status_t status;
+} cursor_glide_context_t;
+
+/* Check glide report conditions, calculates glide coordinates */
+cursor_glide_t cursor_glide_check(cursor_glide_context_t* glide);
+
+/* Start glide reporting, gives first set of glide coordinates */
+cursor_glide_t cursor_glide_start(cursor_glide_context_t* glide);
+
+/* Update glide engine on the latest cursor movement, cursor glide is based on the final movement */
+void cursor_glide_update(cursor_glide_context_t* glide, mouse_xy_report_t dx, mouse_xy_report_t dy, uint16_t z);
+#endif