From eec67e6c4d0b1e163c6eae407634afcabf8158cf Mon Sep 17 00:00:00 2001
From: LavaDesu <me@lava.moe>
Date: Fri, 25 Mar 2022 19:53:07 +0700
Subject: [PATCH] overlays/eww: patch out smooth scroll

---
 overlays/eww.nix           |  4 +++-
 overlays/patches/eww.patch | 32 ++++++++++++++++++++++++++++++++
 2 files changed, 35 insertions(+), 1 deletion(-)
 create mode 100644 overlays/patches/eww.patch

diff --git a/overlays/eww.nix b/overlays/eww.nix
index 466608c..0e954ec 100644
--- a/overlays/eww.nix
+++ b/overlays/eww.nix
@@ -1,5 +1,5 @@
 self: super: {
-  # Mainly for https://github.com/elkowar/eww/pull/280
+  # For https://github.com/elkowar/eww/pull/280
   eww = super.eww.overrideAttrs (old: rec {
     version = "unstable-fb0e57a";
     src = self.fetchFromGitHub {
@@ -8,6 +8,8 @@ self: super: {
       rev = "fb0e57a0149904e76fb33807a2804d4af82350de";
       sha256 = "089rvcswr0wy05fac8xbfrws1qacqi3iialpv8sai7mzlpsw21m0";
     };
+    # Use normal scroll events instead of smooth scroll ( due to https://bugzilla.gnome.org/show_bug.cgi?id=675959 )
+    patches = old.patches ++ [ ./patches/eww.patch ];
     cargoSha256 = "1s7rxilqis2nbvjqjp5zarvmr9g6ndcicyx1rilgjv34qwna3mz1";
     cargoDeps = self.rustPlatform.fetchCargoTarball {
       inherit src;
diff --git a/overlays/patches/eww.patch b/overlays/patches/eww.patch
new file mode 100644
index 0000000..8b61d41
--- /dev/null
+++ b/overlays/patches/eww.patch
@@ -0,0 +1,32 @@
+diff --git a/crates/eww/src/widgets/widget_definitions.rs b/crates/eww/src/widgets/widget_definitions.rs
+index ec307537407..49c70571d4b 100644
+--- a/crates/eww/src/widgets/widget_definitions.rs
++++ b/crates/eww/src/widgets/widget_definitions.rs
+@@ -6,7 +6,7 @@ use crate::{
+ use anyhow::*;
+ use codespan_reporting::diagnostic::Severity;
+ use eww_shared_util::Spanned;
+-use gdk::NotifyType;
++use gdk::{NotifyType, ScrollDirection};
+ use gtk::{self, glib, prelude::*};
+ use itertools::Itertools;
+ use once_cell::sync::Lazy;
+@@ -523,11 +523,14 @@ fn build_gtk_event_box(bargs: &mut BuilderArgs) -> Result<gtk::EventBox> {
+         // @prop onscroll - event to execute when the user scrolls with the mouse over the widget. The placeholder `{}` used in the command will be replaced with either `up` or `down`.
+         prop(timeout: as_duration = Duration::from_millis(200), onscroll: as_string) {
+             gtk_widget.add_events(gdk::EventMask::SCROLL_MASK);
+-            gtk_widget.add_events(gdk::EventMask::SMOOTH_SCROLL_MASK);
+             connect_single_handler!(gtk_widget, gtk_widget.connect_scroll_event(move |_, evt| {
+-                let delta = evt.delta().1;
+-                if delta != 0f64 { // Ignore the first event https://bugzilla.gnome.org/show_bug.cgi?id=675959
+-                    run_command(timeout, &onscroll, if delta < 0f64 { "up" } else { "down" });
++                let dir = match evt.direction() {
++                    ScrollDirection::Up => "up",
++                    ScrollDirection::Down => "down",
++                    _ => "",
++                };
++                if dir != "" {
++                    run_command(timeout, &onscroll, dir);
+                 }
+                 gtk::Inhibit(false)
+             }));