Add option to capture the focused monitor

src/CursorTrackerX11.cpp

@@ -0,0 +1,29 @@
+#include "../include/CursorTrackerX11.hpp"
+#include "../include/WindowUtils.hpp"
+
+namespace gsr {
+    CursorTrackerX11::CursorTrackerX11(Display *dpy) : dpy(dpy) {
+        
+    }
+
+    std::optional<CursorInfo> CursorTrackerX11::get_latest_cursor_info() {
+        Window window = None;
+        const auto cursor_pos = get_cursor_position(dpy, &window);
+        const auto monitors = get_monitors(dpy);
+        std::string monitor_name;
+
+        for(const auto &monitor : monitors) {
+            if(cursor_pos.x >= monitor.position.x && cursor_pos.x <= monitor.position.x + monitor.size.x
+                && cursor_pos.y >= monitor.position.y && cursor_pos.y <= monitor.position.y + monitor.size.y)
+            {
+                monitor_name = monitor.name;
+                break;
+            }
+        }
+
+        if(monitor_name.empty())
+            return std::nullopt;
+
+        return CursorInfo{ cursor_pos, std::move(monitor_name) };
+    }
+}