From 12214b24e84f37782a02f2a60e241a69cfc4db73 Mon Sep 17 00:00:00 2001
From: Swoorup Joshi <swoorupj@gmail.com>
Date: Sat, 6 Jul 2024 06:24:49 +1000
Subject: [PATCH] Upgrade egui to 0.28 (#290)

---
 Cargo.toml     |  2 +-
 examples/ui.rs |  2 +-
 src/systems.rs | 39 ++++++++++++++-------------------------
 3 files changed, 16 insertions(+), 27 deletions(-)

diff --git a/Cargo.toml b/Cargo.toml
index f09043688..fb26439d2 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -40,7 +40,7 @@ required-features = ["render"]
 
 [dependencies]
 bevy = { version = "0.13", default-features = false, features = ["bevy_asset"] }
-egui = { version = "0.27", default-features = false, features = ["bytemuck"] }
+egui = { version = "0.28", default-features = false, features = ["bytemuck"] }
 webbrowser = { version = "0.8.2", optional = true }
 
 [target.'cfg(not(any(target_arch = "wasm32", target_os = "android")))'.dependencies]
diff --git a/examples/ui.rs b/examples/ui.rs
index 80844b287..d8c76c5da 100644
--- a/examples/ui.rs
+++ b/examples/ui.rs
@@ -234,7 +234,7 @@ impl Default for Painting {
 impl Painting {
     pub fn ui_control(&mut self, ui: &mut egui::Ui) -> egui::Response {
         ui.horizontal(|ui| {
-            egui::stroke_ui(ui, &mut self.stroke, "Stroke");
+            ui.add(&mut self.stroke);
             ui.separator();
             if ui.button("Clear Painting").clicked() {
                 self.lines.clear();
diff --git a/src/systems.rs b/src/systems.rs
index c98e10819..5ca126230 100644
--- a/src/systems.rs
+++ b/src/systems.rs
@@ -211,32 +211,21 @@ pub fn process_input_system(
             continue;
         };
 
-        let mut delta = egui::vec2(event.x, event.y);
-        if let MouseScrollUnit::Line = event.unit {
-            // https://github.com/emilk/egui/blob/a689b623a669d54ea85708a8c748eb07e23754b0/egui-winit/src/lib.rs#L449
-            delta *= 50.0;
-        }
+        let delta = egui::vec2(event.x, event.y);
 
-        if ctrl || mac_cmd {
-            // Treat as zoom instead.
-            let factor = (delta.y / 200.0).exp();
-            window_context
-                .egui_input
-                .events
-                .push(egui::Event::Zoom(factor));
-        } else if shift {
-            // Treat as horizontal scrolling.
-            // Note: Mac already fires horizontal scroll events when shift is down.
-            window_context
-                .egui_input
-                .events
-                .push(egui::Event::Scroll(egui::vec2(delta.x + delta.y, 0.0)));
-        } else {
-            window_context
-                .egui_input
-                .events
-                .push(egui::Event::Scroll(delta));
-        }
+        let unit = match event.unit {
+            MouseScrollUnit::Line => egui::MouseWheelUnit::Line,
+            MouseScrollUnit::Pixel => egui::MouseWheelUnit::Point,
+        };
+
+        window_context
+            .egui_input
+            .events
+            .push(egui::Event::MouseWheel {
+                unit,
+                delta,
+                modifiers,
+            });
     }
 
     if !command && !win || !*context_params.is_macos && ctrl && alt {