From 97130e972c294095b3331045de7604dab1c3978d Mon Sep 17 00:00:00 2001
From: Federico Terzi <federicoterzi96@gmail.com>
Date: Sat, 14 Aug 2021 16:07:14 +0200
Subject: [PATCH] feat(detect): filter out espanso-generated events on macOS

---
 espanso-detect/src/mac/native.mm | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/espanso-detect/src/mac/native.mm b/espanso-detect/src/mac/native.mm
index 3605be9..6eb5e9a 100644
--- a/espanso-detect/src/mac/native.mm
+++ b/espanso-detect/src/mac/native.mm
@@ -24,6 +24,8 @@
 
 #include <string.h>
 
+const float ESPANSO_EVENT_MARKER = -27469;
+
 const unsigned long long FLAGS = NSEventMaskKeyDown | NSEventMaskKeyUp | NSEventMaskFlagsChanged | NSEventMaskLeftMouseDown | 
                                  NSEventMaskLeftMouseUp | NSEventMaskRightMouseDown | NSEventMaskRightMouseUp | 
                                  NSEventMaskOtherMouseDown | NSEventMaskOtherMouseUp;
@@ -58,6 +60,12 @@ void * detect_initialize(EventCallback callback, InitializeOptions options) {
     // Setup key detection
 
     [NSEvent addGlobalMonitorForEventsMatchingMask:FLAGS handler:^(NSEvent *event){
+        // Workaround used to determine if the event was generated by espanso itself
+        float eventLocation = event.locationInWindow.x;
+        if (fabs(eventLocation - ESPANSO_EVENT_MARKER) < 0.001) {
+          return;
+        }
+
         InputEvent inputEvent = {};
         if (event.type == NSEventTypeKeyDown || event.type == NSEventTypeKeyUp ) {
           inputEvent.event_type = INPUT_EVENT_TYPE_KEYBOARD;