From 5d1d9f23de6c7fb873625017a09d37857c9c0967 Mon Sep 17 00:00:00 2001
From: Selgesel <selgesel@protonmail.com>
Date: Sat, 18 Sep 2021 09:04:09 +0300
Subject: [PATCH] Release pressed events when the window is blurred on HTML5
 platform

---
 platform/javascript/display_server_javascript.cpp | 7 +++++++
 platform/javascript/display_server_javascript.h   | 2 ++
 2 files changed, 9 insertions(+)

diff --git a/platform/javascript/display_server_javascript.cpp b/platform/javascript/display_server_javascript.cpp
index be4d2cba20a..124b4ee1c85 100644
--- a/platform/javascript/display_server_javascript.cpp
+++ b/platform/javascript/display_server_javascript.cpp
@@ -595,6 +595,12 @@ void DisplayServerJavaScript::virtual_keyboard_hide() {
 	godot_js_display_vk_hide();
 }
 
+// Window blur callback
+EM_BOOL DisplayServerJavaScript::blur_callback(int p_event_type, const EmscriptenFocusEvent *p_event, void *p_user_data) {
+	Input::get_singleton()->release_pressed_events();
+	return false;
+}
+
 // Gamepad
 void DisplayServerJavaScript::gamepad_callback(int p_index, int p_connected, const char *p_id, const char *p_guid) {
 	Input *input = Input::get_singleton();
@@ -797,6 +803,7 @@ DisplayServerJavaScript::DisplayServerJavaScript(const String &p_rendering_drive
 	SET_EM_CALLBACK(canvas_id, mousedown, mouse_button_callback)
 	SET_EM_WINDOW_CALLBACK(mousemove, mousemove_callback)
 	SET_EM_WINDOW_CALLBACK(mouseup, mouse_button_callback)
+	SET_EM_WINDOW_CALLBACK(blur, blur_callback)
 	SET_EM_CALLBACK(canvas_id, wheel, wheel_callback)
 	SET_EM_CALLBACK(canvas_id, touchstart, touch_press_callback)
 	SET_EM_CALLBACK(canvas_id, touchmove, touchmove_callback)
diff --git a/platform/javascript/display_server_javascript.h b/platform/javascript/display_server_javascript.h
index bf5e229c9a6..1863ddefebe 100644
--- a/platform/javascript/display_server_javascript.h
+++ b/platform/javascript/display_server_javascript.h
@@ -85,6 +85,8 @@ private:
 	static EM_BOOL touch_press_callback(int p_event_type, const EmscriptenTouchEvent *p_event, void *p_user_data);
 	static EM_BOOL touchmove_callback(int p_event_type, const EmscriptenTouchEvent *p_event, void *p_user_data);
 
+	static EM_BOOL blur_callback(int p_event_type, const EmscriptenFocusEvent *p_event, void *p_user_data);
+
 	static void gamepad_callback(int p_index, int p_connected, const char *p_id, const char *p_guid);
 	void process_joypads();