From ae4ac6d3b709ee974dcad70114630b1bce928806 Mon Sep 17 00:00:00 2001
From: hiqqup <jubu6000@gmail.com>
Date: Fri, 8 Dec 2023 17:18:42 +0100
Subject: [PATCH] implement scroll factor

---
 config.def.h |  1 +
 dwl.c        | 15 +++++++++++++++
 2 files changed, 16 insertions(+)

diff --git a/config.def.h b/config.def.h
index 5375eb5..047168a 100644
--- a/config.def.h
+++ b/config.def.h
@@ -66,6 +66,7 @@ static const int natural_scrolling = 0;
 static const int disable_while_typing = 1;
 static const int left_handed = 0;
 static const int middle_button_emulation = 0;
+static const double scroll_factor = 1;
 /* You can choose between:
 LIBINPUT_CONFIG_SCROLL_NO_SCROLL
 LIBINPUT_CONFIG_SCROLL_2FG
diff --git a/dwl.c b/dwl.c
index 6aa2cf3..4d805c9 100644
--- a/dwl.c
+++ b/dwl.c
@@ -1,6 +1,7 @@
 /*
  * See LICENSE file for copyright and license details.
  */
+#include <dlfcn.h>
 #include <getopt.h>
 #include <libinput.h>
 #include <linux/input-event-codes.h>
@@ -226,6 +227,8 @@ typedef struct {
 	struct wl_listener destroy;
 } SessionLock;
 
+typedef double (*hooked_axis_t)(struct libinput_event_pointer*, enum libinput_pointer_axis);
+
 /* function declarations */
 static void applybounds(Client *c, struct wlr_box *bbox);
 static void applyrules(Client *c);
@@ -978,6 +981,18 @@ createnotify(struct wl_listener *listener, void *data)
 	LISTEN(&xdg_surface->toplevel->events.set_title, &c->set_title, updatetitle);
 }
 
+double
+libinput_event_pointer_get_scroll_value(struct libinput_event_pointer* event, enum libinput_pointer_axis axis)
+{
+    void* sym = dlsym(RTLD_NEXT, "libinput_event_pointer_get_scroll_value");
+    hooked_axis_t hooked = *(hooked_axis_t*)(&sym);
+    if (axis == LIBINPUT_POINTER_AXIS_SCROLL_HORIZONTAL) {
+        return hooked(event, axis) * scroll_factor;
+    } else {
+        return hooked(event, axis) * scroll_factor;
+    }
+}
+
 void
 createpointer(struct wlr_pointer *pointer)
 {