Re-add kwin and hyprland helper to get window title, this time without a thread

include/DesktopEnvironment/DesktopEnvironment.hpp

@@ -0,0 +1,20 @@
+#pragma once
+
+#include <string>
+
+namespace gsr {
+    class DesktopEnvironment {
+    public:
+        DesktopEnvironment() = default;
+        DesktopEnvironment(const DesktopEnvironment&) = delete;
+        DesktopEnvironment& operator=(const DesktopEnvironment&) = delete;
+        virtual ~DesktopEnvironment() = default;
+
+        virtual bool start() = 0;
+        virtual void update() = 0;
+        // Return an empty string if none
+        virtual std::string get_focused_window_title() = 0;
+        // Return an empty string if unknown
+        //virtual std::string get_focused_monitor_name() = 0;
+    };
+}

include/DesktopEnvironment/DesktopEnvironmentHyprland.hpp

@@ -0,0 +1,30 @@
+#pragma once
+
+#include "DesktopEnvironment.hpp"
+#include <sys/types.h>
+#include <stdio.h>
+
+namespace gsr {
+    class DesktopEnvironmentHyprland : public DesktopEnvironment {
+    public:
+        DesktopEnvironmentHyprland() = default;
+        DesktopEnvironmentHyprland(const DesktopEnvironmentHyprland&) = delete;
+        DesktopEnvironmentHyprland& operator=(const DesktopEnvironmentHyprland&) = delete;
+        ~DesktopEnvironmentHyprland();
+
+        bool start() override;
+        void update() override;
+        std::string get_focused_window_title() override;
+        //std::string get_focused_monitor_name() override;
+    private:
+        void shutdown();
+    private:
+        pid_t process_id = -1;
+        FILE *stdout_file = nullptr;
+        int read_fd = -1;
+        char line_buffer[1024];
+        std::string line;
+
+        std::string window_title;
+    };
+}

include/DesktopEnvironment/DesktopEnvironmentKde.hpp

@@ -0,0 +1,29 @@
+#pragma once
+
+#include "DesktopEnvironment.hpp"
+
+namespace gsr {
+    class DesktopEnvironmentKde : public DesktopEnvironment {
+    public:
+        DesktopEnvironmentKde() = default;
+        DesktopEnvironmentKde(const DesktopEnvironmentKde&) = delete;
+        DesktopEnvironmentKde& operator=(const DesktopEnvironmentKde&) = delete;
+        ~DesktopEnvironmentKde();
+
+        bool start() override;
+        void update() override;
+        std::string get_focused_window_title() override;
+        //std::string get_focused_monitor_name() override;
+    private:
+        void shutdown();
+    private:
+        pid_t process_id = -1;
+        FILE *stdout_file = nullptr;
+        int read_fd = -1;
+        char line_buffer[1024];
+        std::string line;
+
+        std::string window_title;
+        std::string monitor_name;
+    };
+}

include/DesktopEnvironment/DesktopEnvironmentX11.hpp

@@ -0,0 +1,21 @@
+#pragma once
+
+#include "DesktopEnvironment.hpp"
+#include <X11/Xlib.h>
+
+namespace gsr {
+    class DesktopEnvironmentX11 : public DesktopEnvironment {
+    public:
+        DesktopEnvironmentX11(Display *dpy) : dpy(dpy) {}
+        DesktopEnvironmentX11(const DesktopEnvironmentX11&) = delete;
+        DesktopEnvironmentX11& operator=(const DesktopEnvironmentX11&) = delete;
+        ~DesktopEnvironmentX11();
+
+        bool start() override;
+        void update() override;
+        std::string get_focused_window_title() override;
+        //std::string get_focused_monitor_name() override;
+    private:
+        Display *dpy = NULL;
+    };
+}