From ae17af2c558e37955e838586eab420dddd3d220b Mon Sep 17 00:00:00 2001
From: sgoudham <sgoudham@gmail.com>
Date: Sat, 23 Jul 2022 01:19:28 +0100
Subject: [PATCH] fix(#1343): Do not move cursor on first focus for macOS

---
 src/window/mouse_manager.rs | 71 ++++++++++++++++++++++++++++---------
 src/window/settings.rs      |  2 ++
 2 files changed, 57 insertions(+), 16 deletions(-)

diff --git a/src/window/mouse_manager.rs b/src/window/mouse_manager.rs
index 77f2c5c..aa30dd3 100644
--- a/src/window/mouse_manager.rs
+++ b/src/window/mouse_manager.rs
@@ -13,6 +13,7 @@ use glutin::{
     },
     PossiblyCurrent, WindowedContext,
 };
+use log::info;
 use skia_safe::Rect;
 
 use crate::{
@@ -85,6 +86,9 @@ pub struct MouseManager {
 
     mouse_hidden: bool,
     pub enabled: bool,
+
+    // Not exactly a mouse setting but ideally needs to exist for some state
+    current_window_focused: bool,
 }
 
 impl MouseManager {
@@ -100,6 +104,7 @@ impl MouseManager {
             window_details_under_mouse: None,
             mouse_hidden: false,
             enabled: true,
+            current_window_focused: false,
         }
     }
 
@@ -195,6 +200,7 @@ impl MouseManager {
         mouse_button: &MouseButton,
         down: bool,
         keyboard_manager: &KeyboardManager,
+        click_through: bool,
     ) {
         // For some reason pointer down is handled differently from pointer up and drag.
         // Floating windows: relative coordinates are great.
@@ -214,13 +220,15 @@ impl MouseManager {
                         self.relative_position
                     };
 
-                    EVENT_AGGREGATOR.send(UiCommand::Serial(SerialCommand::MouseButton {
-                        button: button_text.clone(),
-                        action,
-                        grid_id: details.id,
-                        position: position.into(),
-                        modifier_string: keyboard_manager.format_modifier_string(true),
-                    }));
+                    if click_through || !self.current_window_focused {
+                        EVENT_AGGREGATOR.send(UiCommand::Serial(SerialCommand::MouseButton {
+                            button: button_text.clone(),
+                            action,
+                            grid_id: details.id,
+                            position: position.into(),
+                            modifier_string: keyboard_manager.format_modifier_string(true),
+                        }));
+                    }
                 }
 
                 if down {
@@ -387,13 +395,23 @@ impl MouseManager {
                         renderer,
                         windowed_context,
                     );
-                    self.handle_pointer_transition(&MouseButton::Left, true, keyboard_manager);
+                    self.handle_pointer_transition(
+                        &MouseButton::Left,
+                        true,
+                        keyboard_manager,
+                        true,
+                    );
                 }
             }
             TouchPhase::Ended | TouchPhase::Cancelled => {
                 if let Some(trace) = self.touch_position.remove(&finger_id) {
                     if self.dragging.is_some() {
-                        self.handle_pointer_transition(&MouseButton::Left, false, keyboard_manager);
+                        self.handle_pointer_transition(
+                            &MouseButton::Left,
+                            false,
+                            keyboard_manager,
+                            true,
+                        );
                     }
                     if !trace.left_deadzone_once {
                         self.handle_pointer_motion(
@@ -403,8 +421,18 @@ impl MouseManager {
                             renderer,
                             windowed_context,
                         );
-                        self.handle_pointer_transition(&MouseButton::Left, true, keyboard_manager);
-                        self.handle_pointer_transition(&MouseButton::Left, false, keyboard_manager);
+                        self.handle_pointer_transition(
+                            &MouseButton::Left,
+                            true,
+                            keyboard_manager,
+                            true,
+                        );
+                        self.handle_pointer_transition(
+                            &MouseButton::Left,
+                            false,
+                            keyboard_manager,
+                            true,
+                        );
                     }
                 }
             }
@@ -419,6 +447,10 @@ impl MouseManager {
         windowed_context: &WindowedContext<PossiblyCurrent>,
     ) {
         match event {
+            Event::WindowEvent {
+                event: WindowEvent::Focused(focused),
+                ..
+            } => self.current_window_focused = *focused,
             Event::WindowEvent {
                 event: WindowEvent::CursorMoved { position, .. },
                 ..
@@ -476,11 +508,18 @@ impl MouseManager {
             Event::WindowEvent {
                 event: WindowEvent::MouseInput { button, state, .. },
                 ..
-            } => self.handle_pointer_transition(
-                button,
-                state == &ElementState::Pressed,
-                keyboard_manager,
-            ),
+            } => {
+                let window_settings = SETTINGS.get::<WindowSettings>();
+                self.handle_pointer_transition(
+                    button,
+                    state == &ElementState::Pressed,
+                    keyboard_manager,
+                    window_settings.click_through,
+                );
+
+                // Always reset focused to false to prevent all mouse inputs not working
+                self.current_window_focused = false;
+            }
             Event::WindowEvent {
                 event:
                     WindowEvent::KeyboardInput {
diff --git a/src/window/settings.rs b/src/window/settings.rs
index e455dad..5b16adc 100644
--- a/src/window/settings.rs
+++ b/src/window/settings.rs
@@ -12,6 +12,7 @@ pub struct WindowSettings {
     pub hide_mouse_when_typing: bool,
     pub touch_deadzone: f32,
     pub touch_drag_timeout: f32,
+    pub click_through: bool
 }
 
 impl Default for WindowSettings {
@@ -27,6 +28,7 @@ impl Default for WindowSettings {
             hide_mouse_when_typing: false,
             touch_deadzone: 6.0,
             touch_drag_timeout: 0.17,
+            click_through: false
         }
     }
 }