From 2deb9d0b742ef07136c598f255e967ea9905a815 Mon Sep 17 00:00:00 2001
From: brian cully <bjc@spork.org>
Date: Fri, 16 Jan 2026 10:00:34 -0500
Subject: stop using ploopy's drag scroll which accumulated large errors

---
 keyboards/ploopyco/madromys/keymaps/bjc/keymap.c | 43 +++++++++++++++++++-----
 1 file changed, 35 insertions(+), 8 deletions(-)

(limited to 'keyboards/ploopyco')

diff --git a/keyboards/ploopyco/madromys/keymaps/bjc/keymap.c b/keyboards/ploopyco/madromys/keymaps/bjc/keymap.c
index db9cd23..3b76c0a 100644
--- a/keyboards/ploopyco/madromys/keymaps/bjc/keymap.c
+++ b/keyboards/ploopyco/madromys/keymaps/bjc/keymap.c
@@ -40,29 +40,35 @@ const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
 
 // probably shouldn't be doing this, but beats trying to keep track of
 // it myself and getting out of sync.
-extern bool is_drag_scroll;
+//extern bool is_drag_scroll;
+
+bool drag_scroll = false;
 
 layer_state_t layer_state_set_user(layer_state_t state) {
   if (IS_LAYER_ON_STATE(state, FN1)
       || IS_LAYER_ON_STATE(state, FN2)) {
-    is_drag_scroll = true;
+    drag_scroll = true;
   } else {
-    is_drag_scroll = false;
+    drag_scroll = false;
   }
   return state;
 }
 
+/* report_mouse_t pointing_device_task_user(report_mouse_t report) { */
+/*   return report; */
+/* } */
+
 /*
  * use deferred execution to turn on a layer aften n ms of the key
  * being held down.
  */
 /*
-uinst32_t callback(uint32_t trigger_time, void *cb_arg) {
+  uinst32_t callback(uint32_t trigger_time, void *cb_arg) {
   return 0;
-}
-token = defer_exec(layer_hold_timeout, callback, NULL);
-cancel_deferred_exec(token);
-*/
+  }
+  token = defer_exec(layer_hold_timeout, callback, NULL);
+  cancel_deferred_exec(token);
+ */
 
 static bool fn1_up = false;
 static uint16_t fn1_release_timer = 0;
@@ -90,3 +96,24 @@ bool process_record_user(uint16_t keycode, keyrecord_t *record) {
   }
   return true;
 }
+
+#define DRAGSCROLL_SHIFT_H 0
+#define DRAGSCROLL_SHIFT_V 0
+
+// rejiggering ploopyco's version to not use floats
+report_mouse_t pointing_device_task_user(report_mouse_t mouse_report) {
+  if (drag_scroll) {
+    mouse_report.h = mouse_report.x >> DRAGSCROLL_SHIFT_H;
+#ifdef PLOOPY_DRAGSCROLL_INVERT
+    mouse_report.v = -(mouse_report.y >> DRAGSCROLL_SHIFT_V);
+#else
+    mouse_report.v = mouse_report.y >> DRAGSCROLL_SHIFT_V;
+#endif
+
+    // Clear the X and Y values of the mouse report
+    mouse_report.x = 0;
+    mouse_report.y = 0;
+  }
+
+  return mouse_report;
+}
-- 
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