4 files changed, 183 insertions, 0 deletions
diff --git a/include/GlobalHotkeys/GlobalHotkeys.hpp b/include/GlobalHotkeys/GlobalHotkeys.hpp
new file mode 100644
index 0000000..2927fa7
--- /dev/null
+++ b/include/GlobalHotkeys/GlobalHotkeys.hpp
@@ -0,0 +1,45 @@
+#pragma once
+
+#include <stdint.h>
+#include <functional>
+#include <string>
+
+namespace mgl {
+    class Event;
+}
+
+namespace gsr {
+    enum HotkeyModifier : uint32_t {
+        HOTKEY_MOD_LSHIFT = 1 << 0,
+        HOTKEY_MOD_RSHIFT = 1 << 1,
+        HOTKEY_MOD_LCTRL  = 1 << 2,
+        HOTKEY_MOD_RCTRL  = 1 << 3,
+        HOTKEY_MOD_LALT   = 1 << 4,
+        HOTKEY_MOD_RALT   = 1 << 5,
+        HOTKEY_MOD_LSUPER = 1 << 6,
+        HOTKEY_MOD_RSUPER = 1 << 7
+    };
+
+    struct Hotkey {
+        uint32_t key = 0;       // X11 keysym
+        uint32_t modifiers = 0; // HotkeyModifier
+    };
+
+    using GlobalHotkeyCallback = std::function<void(const std::string &id)>;
+
+    class GlobalHotkeys {
+    public:
+        GlobalHotkeys() = default;
+        GlobalHotkeys(const GlobalHotkeys&) = delete;
+        GlobalHotkeys& operator=(const GlobalHotkeys&) = delete;
+        virtual ~GlobalHotkeys() = default;
+
+        virtual bool bind_key_press(Hotkey hotkey, const std::string &id, GlobalHotkeyCallback callback) { (void)hotkey; (void)id; (void)callback; return false; }
+        virtual void unbind_key_press(const std::string &id) { (void)id; }
+        virtual void unbind_all_keys() {}
+        virtual bool bind_action(const std::string &id, GlobalHotkeyCallback callback) { (void)id; (void)callback; return false; };
+        virtual void poll_events() = 0;
+        // Returns true if the event wasn't consumed (if the event didn't match a key that has been bound)
+        virtual bool on_event(mgl::Event &event) { (void)event; return true; }
+    };
+}
+\ No newline at end of file
diff --git a/include/GlobalHotkeys/GlobalHotkeysJoystick.hpp b/include/GlobalHotkeys/GlobalHotkeysJoystick.hpp
new file mode 100644
index 0000000..4b266cb
--- /dev/null
+++ b/include/GlobalHotkeys/GlobalHotkeysJoystick.hpp
@@ -0,0 +1,70 @@
+#pragma once
+
+#include "GlobalHotkeys.hpp"
+#include "../Hotplug.hpp"
+#include <unordered_map>
+#include <thread>
+#include <poll.h>
+#include <linux/joystick.h>
+
+namespace gsr {
+    static constexpr int max_js_poll_fd = 16;
+
+    class GlobalHotkeysJoystick : public GlobalHotkeys {
+        class GlobalHotkeysJoystickHotplugDelegate;
+    public:
+        GlobalHotkeysJoystick() = default;
+        GlobalHotkeysJoystick(const GlobalHotkeysJoystick&) = delete;
+        GlobalHotkeysJoystick& operator=(const GlobalHotkeysJoystick&) = delete;
+        ~GlobalHotkeysJoystick() override;
+
+        bool start();
+        // Currently valid ids:
+        // save_replay
+        // save_1_min_replay
+        // save_10_min_replay
+        // take_screenshot
+        // toggle_record
+        // toggle_replay
+        // toggle_show
+        bool bind_action(const std::string &id, GlobalHotkeyCallback callback) override;
+        void poll_events() override;
+    private:
+        void read_events();
+        void process_js_event(int fd, js_event &event);
+        bool add_device(const char *dev_input_filepath, bool print_error = true);
+        bool remove_device(const char *dev_input_filepath);
+        bool remove_poll_fd(int index);
+        // Returns -1 if not found
+        int get_poll_fd_index_by_dev_input_id(int dev_input_id) const;
+    private:
+        struct ExtraData {
+            int dev_input_id = 0;
+        };
+
+        std::unordered_map<std::string, GlobalHotkeyCallback> bound_actions_by_id;
+        std::thread read_thread;
+
+        pollfd poll_fd[max_js_poll_fd];
+        ExtraData extra_data[max_js_poll_fd];
+        int num_poll_fd = 0;
+        int event_fd = -1;
+        int event_index = -1;
+
+        bool playstation_button_pressed = false;
+        bool up_pressed = false;
+        bool down_pressed = false;
+        bool left_pressed = false;
+        bool right_pressed = false;
+
+        bool save_replay = false;
+        bool save_1_min_replay = false;
+        bool save_10_min_replay = false;
+        bool take_screenshot = false;
+        bool toggle_record = false;
+        bool toggle_replay = false;
+        bool toggle_show = false;
+        int hotplug_poll_index = -1;
+        Hotplug hotplug;
+    };
+}
+\ No newline at end of file
diff --git a/include/GlobalHotkeys/GlobalHotkeysLinux.hpp b/include/GlobalHotkeys/GlobalHotkeysLinux.hpp
new file mode 100644
index 0000000..959d095
--- /dev/null
+++ b/include/GlobalHotkeys/GlobalHotkeysLinux.hpp
@@ -0,0 +1,34 @@
+#pragma once
+
+#include "GlobalHotkeys.hpp"
+#include <unordered_map>
+#include <sys/types.h>
+
+namespace gsr {
+    class GlobalHotkeysLinux : public GlobalHotkeys {
+    public:
+        enum class GrabType {
+            ALL,
+            VIRTUAL
+        };
+
+        GlobalHotkeysLinux(GrabType grab_type);
+        GlobalHotkeysLinux(const GlobalHotkeysLinux&) = delete;
+        GlobalHotkeysLinux& operator=(const GlobalHotkeysLinux&) = delete;
+        ~GlobalHotkeysLinux() override;
+
+        bool start();
+        bool bind_key_press(Hotkey hotkey, const std::string &id, GlobalHotkeyCallback callback) override;
+        void unbind_all_keys() override;
+        void poll_events() override;
+    private:
+        void close_fds();
+    private:
+        pid_t process_id = 0;
+        int read_pipes[2];
+        int write_pipes[2];
+        FILE *read_file = nullptr;
+        std::unordered_map<std::string, GlobalHotkeyCallback> bound_actions_by_id;
+        GrabType grab_type;
+    };
+}
+\ No newline at end of file
diff --git a/include/GlobalHotkeys/GlobalHotkeysX11.hpp b/include/GlobalHotkeys/GlobalHotkeysX11.hpp
new file mode 100644
index 0000000..610399a
--- /dev/null
+++ b/include/GlobalHotkeys/GlobalHotkeysX11.hpp
@@ -0,0 +1,34 @@
+#pragma once
+
+#include "GlobalHotkeys.hpp"
+#include <unordered_map>
+#include <X11/Xlib.h>
+
+namespace gsr {
+    class GlobalHotkeysX11 : public GlobalHotkeys {
+    public:
+        GlobalHotkeysX11();
+        GlobalHotkeysX11(const GlobalHotkeysX11&) = delete;
+        GlobalHotkeysX11& operator=(const GlobalHotkeysX11&) = delete;
+        ~GlobalHotkeysX11() override;
+
+        // Hotkey key is a KeySym (XK_z for example) and modifiers is a bitmask of X11 modifier masks (for example ShiftMask | Mod1Mask)
+        bool bind_key_press(Hotkey hotkey, const std::string &id, GlobalHotkeyCallback callback) override;
+        void unbind_key_press(const std::string &id) override;
+        void unbind_all_keys() override;
+        void poll_events() override;
+        bool on_event(mgl::Event &event) override;
+    private:
+        // Returns true if a key bind has been registered for the hotkey
+        bool call_hotkey_callback(Hotkey hotkey) const;
+    private:
+        struct HotkeyData {
+            Hotkey hotkey;
+            GlobalHotkeyCallback callback;
+        };
+
+        Display *dpy = nullptr;
+        XEvent xev;
+        std::unordered_map<std::string, HotkeyData> bound_keys_by_id;
+    };
+}
+\ No newline at end of file