From 5129856857776f77ba4a89ccc632430365701368 Mon Sep 17 00:00:00 2001
From: speedie <speedie@duck.com>
Date: Sat, 22 Jul 2023 03:25:35 +0200
Subject: [PATCH] Fix scrolling on Wayland, apparently you cannot use Linux
 kernel keycodes

---
 libs/wl/wayland.c | 19 +++++++++++++++++--
 libs/wl/wayland.h | 10 ++++++----
 2 files changed, 23 insertions(+), 6 deletions(-)

diff --git a/libs/wl/wayland.c b/libs/wl/wayland.c
index d0e0f4d..d2a0266 100644
--- a/libs/wl/wayland.c
+++ b/libs/wl/wayland.c
@@ -208,7 +208,6 @@ void keyboard_keymap(void *data, struct wl_keyboard *wl_keyboard, uint32_t forma
 }
 
 void buttonpress_wl(uint32_t button, double ex, double ey) {
-    struct item *item;
     int x = 0;
     int y = 0;
     int w;
@@ -217,6 +216,7 @@ void buttonpress_wl(uint32_t button, double ex, double ey) {
     int item_num = 0;
     int yp = 0;
     unsigned int i, click;
+    struct item *item;
 
     if (ex == 0 && ey == 0) {
         return; // While it is possible to click at this position, usually it means we're outside the window area.
@@ -240,7 +240,7 @@ void buttonpress_wl(uint32_t button, double ex, double ey) {
     if (!hidemode) modew = pango_mode ? TEXTWM(tx.modetext) : TEXTW(tx.modetext);
     if (!hidecaps) capsw = pango_caps ? TEXTWM(tx.capstext) : TEXTW(tx.capstext);
 
-        if (!strcmp(tx.capstext, ""))
+    if (!strcmp(tx.capstext, ""))
         capsw = 0;
 
     if ((hideprompt && hideinput && hidemode && hidematchcount && hidecaps) && lines) {
@@ -346,6 +346,21 @@ void pointer_motion_handler(void *data, struct wl_pointer *pointer, uint32_t tim
     mouse_y = wl_fixed_to_int(y);
 }
 
+void pointer_axis_handler(void *data, struct wl_pointer *pointer, uint32_t time, uint32_t axis, wl_fixed_t value) {
+    mouse_scroll = 1;
+
+    if (value > 0) {
+        mouse_scroll_direction = 0;
+    } else {
+        mouse_scroll_direction = 1;
+    }
+
+    buttonpress_wl(mouse_scroll_direction, mouse_x, mouse_y);
+
+    mouse_scroll = 0;
+    mouse_scroll_direction = -1;
+}
+
 void pointer_button_handler(void *data, struct wl_pointer *pointer, uint32_t serial, uint32_t time, uint32_t button, uint32_t state) {
     if (state != WL_POINTER_BUTTON_STATE_PRESSED) {
         return; // We don't want a release event to count as a click, only the initial press.
diff --git a/libs/wl/wayland.h b/libs/wl/wayland.h
index a80c30b..6f41c30 100644
--- a/libs/wl/wayland.h
+++ b/libs/wl/wayland.h
@@ -65,8 +65,8 @@ static WlMouse wl_cbuttons[256];
 #define WL_Forward 0x115
 #define WL_Back	0x116
 #define WL_Task	0x117
-#define WL_Up 0x151
-#define WL_Down 0x150
+#define WL_Up 1
+#define WL_Down 0
 
 static WlKey wlhkeys[1] = { { -1, WL_CtrlAlt, XKB_KEY_Delete, quit, {0} } };
 
@@ -111,9 +111,10 @@ static int output_physical_width = 0;
 static int output_physical_height = 0;
 static int output_width = 0;
 static int output_height = 0;
-
 static int mouse_x = 0;
 static int mouse_y = 0;
+static int mouse_scroll = 0;
+static int mouse_scroll_direction = 0;
 
 static void zero();
 static void resizeclient_wl(struct state *state);
@@ -134,6 +135,7 @@ static void keyboard_repeat_info(void *data, struct wl_keyboard *wl_keyboard, in
 static void keypress_wl(struct state *state, enum wl_keyboard_key_state key_state, xkb_keysym_t sym);
 static void pointer_button_handler(void *data, struct wl_pointer *pointer, uint32_t serial, uint32_t time, uint32_t button, uint32_t state);
 static void pointer_motion_handler(void *data, struct wl_pointer *pointer, uint32_t time, wl_fixed_t x, wl_fixed_t y);
+static void pointer_axis_handler(void *data, struct wl_pointer *pointer, uint32_t time, uint32_t axis, wl_fixed_t value);
 static void buttonpress_wl(uint32_t button, double ex, double ey);
 static int is_correct_modifier(struct state *state, char *modifier);
 static int roundtrip(struct state *state);
@@ -188,7 +190,7 @@ static const struct wl_pointer_listener pointer_listener = {
     .leave = zero,
     .motion = pointer_motion_handler,
     .button = pointer_button_handler,
-    .axis = zero,
+    .axis = pointer_axis_handler,
 };
 
 struct wl_output_listener output_listener = {