Add region capture option

include/GsrInfo.hpp

@@ -47,6 +47,7 @@ namespace gsr {
 
     struct SupportedCaptureOptions {
         bool window = false;
+        bool region = false;
         bool focused = false;
         bool portal = false;
         std::vector<GsrMonitor> monitors;

include/Overlay.hpp

@@ -6,9 +6,9 @@
 #include "Config.hpp"
 #include "window_texture.h"
 #include "WindowUtils.hpp"
-#include "GlobalHotkeysLinux.hpp"
 #include "GlobalHotkeysJoystick.hpp"
 #include "AudioPlayer.hpp"
+#include "RegionSelector.hpp"
 
 #include <mglpp/window/Window.hpp>
 #include <mglpp/window/Event.hpp>
@@ -78,7 +78,6 @@ namespace gsr {
         void process_key_bindings(mgl::Event &event);
         void grab_mouse_and_keyboard();
         void xi_setup_fake_cursor();
-        void xi_grab_all_mouse_devices();
 
         void close_gpu_screen_recorder_output();
 
@@ -109,10 +108,10 @@ namespace gsr {
         void update_ui_replay_stopped();
 
         void on_press_save_replay();
-        bool on_press_start_replay(bool disable_notification);
-        void on_press_start_record();
-        void on_press_start_stream();
-        void on_press_take_screenshot();
+        bool on_press_start_replay(bool disable_notification, bool finished_region_selection);
+        void on_press_start_record(bool finished_region_selection);
+        void on_press_start_stream(bool finished_region_selection);
+        void on_press_take_screenshot(bool finished_region_selection);
         bool update_compositor_texture(const Monitor &monitor);
 
         void force_window_on_top();
@@ -202,5 +201,8 @@ namespace gsr {
         bool try_replay_startup = true;
 
         AudioPlayer audio_player;
+        RegionSelector region_selector;
+        bool start_region_capture = false;
+        std::function<void()> on_region_selected;
     };
 }

include/RegionSelector.hpp

@@ -0,0 +1,52 @@
+#pragma once
+
+#include "WindowUtils.hpp"
+#include <mglpp/system/vec.hpp>
+#include <mglpp/graphics/Color.hpp>
+#include <vector>
+
+#include <X11/Xlib.h>
+
+namespace gsr {
+    struct Region {
+        mgl::vec2i pos;
+        mgl::vec2i size;
+    };
+
+    class RegionSelector {
+    public:
+        RegionSelector();
+        RegionSelector(const RegionSelector&) = delete;
+        RegionSelector& operator=(const RegionSelector&) = delete;
+        ~RegionSelector();
+
+        bool start(mgl::Color border_color);
+        void stop();
+        bool is_started() const;
+
+        bool failed() const;
+        bool poll_events();
+        bool is_selected() const;
+        bool take_selection();
+        Region get_selection() const;
+    private:
+        void on_button_press(const void *de);
+        void on_button_release(const void *de);
+        void on_mouse_motion(const void *de);
+    private:
+        Display *dpy = nullptr;
+        unsigned long region_window = 0;
+        unsigned long cursor_window = 0;
+        unsigned long region_window_colormap = 0;
+        int xi_opcode = 0;
+        GC region_gc = nullptr;
+        GC cursor_gc = nullptr;
+
+        Region region;
+        bool selecting_region = false;
+        bool selected = false;
+        bool is_wayland = false;
+        std::vector<Monitor> monitors;
+        mgl::vec2i cursor_pos;
+    };
+}

include/WindowUtils.hpp

@@ -22,9 +22,19 @@ namespace gsr {
     std::string get_focused_window_name(Display *dpy, WindowCaptureType window_capture_type);
     std::string get_window_name_at_position(Display *dpy, mgl::vec2i position, Window ignore_window);
     std::string get_window_name_at_cursor_position(Display *dpy, Window ignore_window);
+    void set_window_size_not_resizable(Display *dpy, Window window, int width, int height);
     mgl::vec2i get_cursor_position(Display *dpy, Window *window);
     mgl::vec2i create_window_get_center_position(Display *display);
     std::string get_window_manager_name(Display *display);
     bool is_compositor_running(Display *dpy, int screen);
     std::vector<Monitor> get_monitors(Display *dpy);
+    void xi_grab_all_mouse_devices(Display *dpy);
+    void xi_ungrab_all_mouse_devices(Display *dpy);
+    void xi_warp_all_mouse_devices(Display *dpy, mgl::vec2i position);
+    void window_set_fullscreen(Display *dpy, Window window, bool fullscreen);
+    bool window_is_fullscreen(Display *display, Window window);
+    bool set_window_wm_state(Display *dpy, Window window, Atom atom);
+    void make_window_click_through(Display *display, Window window);
+    bool make_window_sticky(Display *dpy, Window window);
+    bool hide_window_from_taskbar(Display *dpy, Window window);
 }