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virtualx-engine/core/os/os.h
Rémi Verschelde 16f6a5b139
One Copyright Update to rule them all 
As many open source projects have started doing it, we're removing the
current year from the copyright notice, so that we don't need to bump
it every year.

It seems like only the first year of publication is technically
relevant for copyright notices, and even that seems to be something
that many companies stopped listing altogether (in a version controlled
codebase, the commits are a much better source of date of publication
than a hardcoded copyright statement).

We also now list Godot Engine contributors first as we're collectively
the current maintainers of the project, and we clarify that the
"exclusive" copyright of the co-founders covers the timespan before
opensourcing (their further contributions are included as part of Godot
Engine contributors).

Also fixed "cf." Frenchism - it's meant as "refer to / see".

Backported from #70885.
2023-01-10 15:32:59 +01:00

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/**************************************************************************/
/* os.h */
/**************************************************************************/
/* This file is part of: */
/* GODOT ENGINE */
/* https://godotengine.org */
/**************************************************************************/
/* Copyright (c) 2014-present Godot Engine contributors (see AUTHORS.md). */
/* Copyright (c) 2007-2014 Juan Linietsky, Ariel Manzur. */
/* */
/* Permission is hereby granted, free of charge, to any person obtaining */
/* a copy of this software and associated documentation files (the */
/* "Software"), to deal in the Software without restriction, including */
/* without limitation the rights to use, copy, modify, merge, publish, */
/* distribute, sublicense, and/or sell copies of the Software, and to */
/* permit persons to whom the Software is furnished to do so, subject to */
/* the following conditions: */
/* */
/* The above copyright notice and this permission notice shall be */
/* included in all copies or substantial portions of the Software. */
/* */
/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, */
/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF */
/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. */
/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY */
/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, */
/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE */
/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
/**************************************************************************/
#ifndef OS_H
#define OS_H
#include "core/engine.h"
#include "core/image.h"
#include "core/io/logger.h"
#include "core/list.h"
#include "core/os/main_loop.h"
#include "core/ustring.h"
#include "core/vector.h"
#include <stdarg.h>
#include <stdlib.h>
class OS {
static OS *singleton;
static uint64_t target_ticks;
String _execpath;
List<String> _cmdline;
bool _keep_screen_on;
bool low_processor_usage_mode;
int low_processor_usage_mode_sleep_usec;
bool _update_vital_only;
bool _verbose_stdout;
bool _debug_stdout;
String _local_clipboard;
String _primary_clipboard;
uint64_t _msec_splash;
bool _no_window;
int _exit_code = EXIT_FAILURE; // unexpected exit is marked as failure
bool _is_custom_exit_code = false;
int _orientation;
bool _allow_hidpi;
bool _allow_layered;
bool _use_vsync;
bool _vsync_via_compositor;
bool _delta_smoothing_enabled;
char *last_error;
void *_stack_bottom;
CompositeLogger *_logger;
bool restart_on_exit;
List<String> restart_commandline;
protected:
bool _update_pending;
void _set_logger(CompositeLogger *p_logger);
public:
typedef void (*ImeCallback)(void *p_inp, String p_text, Point2 p_selection);
typedef bool (*HasServerFeatureCallback)(const String &p_feature);
enum PowerState {
POWERSTATE_UNKNOWN, /**< cannot determine power status */
POWERSTATE_ON_BATTERY, /**< Not plugged in, running on the battery */
POWERSTATE_NO_BATTERY, /**< Plugged in, no battery available */
POWERSTATE_CHARGING, /**< Plugged in, charging battery */
POWERSTATE_CHARGED /**< Plugged in, battery charged */
};
enum RenderThreadMode {
RENDER_THREAD_UNSAFE,
RENDER_THREAD_SAFE,
RENDER_SEPARATE_THREAD
};
struct VideoMode {
int width, height;
bool fullscreen;
bool resizable;
bool borderless_window;
bool maximized;
bool always_on_top;
bool use_vsync;
bool vsync_via_compositor;
bool layered;
float get_aspect() const { return (float)width / (float)height; }
VideoMode(int p_width = 1024, int p_height = 600, bool p_fullscreen = false, bool p_resizable = true, bool p_borderless_window = false, bool p_maximized = false, bool p_always_on_top = false, bool p_use_vsync = false, bool p_vsync_via_compositor = false) {
width = p_width;
height = p_height;
fullscreen = p_fullscreen;
resizable = p_resizable;
borderless_window = p_borderless_window;
maximized = p_maximized;
always_on_top = p_always_on_top;
use_vsync = p_use_vsync;
vsync_via_compositor = p_vsync_via_compositor;
layered = false;
}
};
protected:
friend class Main;
HasServerFeatureCallback has_server_feature_callback;
RenderThreadMode _render_thread_mode;
// functions used by main to initialize/deinitialize the OS
void add_logger(Logger *p_logger);
virtual void initialize_core() = 0;
virtual Error initialize(const VideoMode &p_desired, int p_video_driver, int p_audio_driver) = 0;
virtual void set_main_loop(MainLoop *p_main_loop) = 0;
virtual void delete_main_loop() = 0;
virtual void finalize() = 0;
virtual void finalize_core() = 0;
virtual void set_cmdline(const char *p_execpath, const List<String> &p_args);
virtual bool _check_internal_feature_support(const String &p_feature) = 0;
public:
typedef int64_t ProcessID;
static OS *get_singleton();
virtual void global_menu_add_item(const String &p_menu, const String &p_label, const Variant &p_signal, const Variant &p_meta){};
virtual void global_menu_add_separator(const String &p_menu){};
virtual void global_menu_remove_item(const String &p_menu, int p_idx){};
virtual void global_menu_clear(const String &p_menu){};
void print_error(const char *p_function, const char *p_file, int p_line, const char *p_code, const char *p_rationale, Logger::ErrorType p_type = Logger::ERR_ERROR);
void print(const char *p_format, ...) _PRINTF_FORMAT_ATTRIBUTE_2_3;
void printerr(const char *p_format, ...) _PRINTF_FORMAT_ATTRIBUTE_2_3;
virtual void alert(const String &p_alert, const String &p_title = "ALERT!") = 0;
virtual String get_stdin_string(bool p_block = true) = 0;
enum MouseMode {
MOUSE_MODE_VISIBLE,
MOUSE_MODE_HIDDEN,
MOUSE_MODE_CAPTURED,
MOUSE_MODE_CONFINED
};
virtual void set_mouse_mode(MouseMode p_mode);
virtual MouseMode get_mouse_mode() const;
virtual void warp_mouse_position(const Point2 &p_to) {}
virtual Point2 get_mouse_position() const = 0;
virtual int get_mouse_button_state() const = 0;
virtual void set_window_title(const String &p_title) = 0;
virtual void set_window_mouse_passthrough(const PoolVector2Array &p_region){};
virtual void set_clipboard(const String &p_text);
virtual String get_clipboard() const;
virtual bool has_clipboard() const;
virtual void set_clipboard_primary(const String &p_text);
virtual String get_clipboard_primary() const;
virtual void set_video_mode(const VideoMode &p_video_mode, int p_screen = 0) = 0;
virtual VideoMode get_video_mode(int p_screen = 0) const = 0;
virtual void get_fullscreen_mode_list(List<VideoMode> *p_list, int p_screen = 0) const = 0;
enum VideoDriver {
VIDEO_DRIVER_GLES3,
VIDEO_DRIVER_GLES2,
VIDEO_DRIVER_MAX,
};
virtual int get_video_driver_count() const;
virtual const char *get_video_driver_name(int p_driver) const;
virtual int get_current_video_driver() const = 0;
virtual bool is_offscreen_gl_available() const;
virtual void set_offscreen_gl_current(bool p_current);
virtual int get_audio_driver_count() const;
virtual const char *get_audio_driver_name(int p_driver) const;
virtual int get_tablet_driver_count() const { return 0; };
virtual String get_tablet_driver_name(int p_driver) const { return ""; };
virtual String get_current_tablet_driver() const { return ""; };
virtual void set_current_tablet_driver(const String &p_driver){};
virtual PoolStringArray get_connected_midi_inputs();
virtual void open_midi_inputs();
virtual void close_midi_inputs();
// Returned by get_screen_refresh_rate if the method fails.
const float SCREEN_REFRESH_RATE_FALLBACK = -1.0;
virtual int get_screen_count() const { return 1; }
virtual int get_current_screen() const { return 0; }
virtual void set_current_screen(int p_screen) {}
virtual Point2 get_screen_position(int p_screen = -1) const { return Point2(); }
virtual Size2 get_screen_size(int p_screen = -1) const { return get_window_size(); }
virtual int get_screen_dpi(int p_screen = -1) const { return 72; }
virtual float get_screen_scale(int p_screen = -1) const { return 1.0; }
virtual float get_screen_max_scale() const { return 1.0; };
virtual float get_screen_refresh_rate(int p_screen = -1) const { return SCREEN_REFRESH_RATE_FALLBACK; };
virtual Point2 get_window_position() const { return Vector2(); }
virtual void set_window_position(const Point2 &p_position) {}
virtual Size2 get_max_window_size() const { return Size2(); };
virtual Size2 get_min_window_size() const { return Size2(); };
virtual Size2 get_window_size() const = 0;
virtual Size2 get_real_window_size() const { return get_window_size(); }
virtual void set_min_window_size(const Size2 p_size) {}
virtual void set_max_window_size(const Size2 p_size) {}
virtual void set_window_size(const Size2 p_size) {}
virtual void set_window_fullscreen(bool p_enabled) {}
virtual bool is_window_fullscreen() const { return true; }
virtual void set_window_resizable(bool p_enabled) {}
virtual bool is_window_resizable() const { return false; }
virtual void set_window_minimized(bool p_enabled) {}
virtual bool is_window_minimized() const { return false; }
virtual void set_window_maximized(bool p_enabled) {}
virtual bool is_window_maximized() const { return true; }
virtual void set_window_always_on_top(bool p_enabled) {}
virtual bool is_window_always_on_top() const { return false; }
virtual bool is_window_focused() const { return true; }
virtual void request_attention() {}
virtual void center_window();
// Returns internal pointers and handles.
// While exposed to GDScript this is mostly to give GDNative plugins access to this information.
// Note that whether a valid handle is returned depends on whether it applies to the given
// platform and often to the chosen render driver.
// NULL will be returned if a handle is not available.
enum HandleType {
APPLICATION_HANDLE, // HINSTANCE, NSApplication*, UIApplication*, JNIEnv* ...
DISPLAY_HANDLE, // X11::Display* ...
WINDOW_HANDLE, // HWND, X11::Window*, NSWindow*, UIWindow*, Android activity ...
WINDOW_VIEW, // HDC, NSView*, UIView*, Android surface ...
OPENGL_CONTEXT, // HGLRC, X11::GLXContext, NSOpenGLContext*, EGLContext* ...
};
virtual void *get_native_handle(int p_handle_type) { return nullptr; };
// Returns window area free of hardware controls and other obstacles.
// The application should use this to determine where to place UI elements.
//
// Keep in mind the area returned is in window coordinates rather than
// viewport coordinates - you should perform the conversion on your own.
//
// The maximum size of the area is Rect2(0, 0, window_size.width, window_size.height).
virtual Rect2 get_window_safe_area() const {
Size2 window_size = get_window_size();
return Rect2(0, 0, window_size.width, window_size.height);
}
virtual Array get_display_cutouts() const { return Array(); }
virtual void set_borderless_window(bool p_borderless) {}
virtual bool get_borderless_window() { return false; }
virtual bool get_window_per_pixel_transparency_enabled() const { return false; }
virtual void set_window_per_pixel_transparency_enabled(bool p_enabled) {}
virtual void set_ime_active(const bool p_active) {}
virtual void set_ime_position(const Point2 &p_pos) {}
virtual Point2 get_ime_selection() const { return Point2(); }
virtual String get_ime_text() const { return String(); }
virtual Error open_dynamic_library(const String p_path, void *&p_library_handle, bool p_also_set_library_path = false) { return ERR_UNAVAILABLE; }
virtual Error close_dynamic_library(void *p_library_handle) { return ERR_UNAVAILABLE; }
virtual Error get_dynamic_library_symbol_handle(void *p_library_handle, const String p_name, void *&p_symbol_handle, bool p_optional = false) { return ERR_UNAVAILABLE; }
virtual void set_keep_screen_on(bool p_enabled);
virtual bool is_keep_screen_on() const;
virtual void set_low_processor_usage_mode(bool p_enabled);
virtual bool is_in_low_processor_usage_mode() const;
virtual void set_low_processor_usage_mode_sleep_usec(int p_usec);
virtual int get_low_processor_usage_mode_sleep_usec() const;
virtual void set_update_vital_only(bool p_enabled);
virtual void set_update_pending(bool p_pending) { _update_pending = p_pending; }
// Convenience easy switch for turning this off outside tools builds, without littering calling code
// with #ifdefs. It will also hopefully be compiled out in release.
#ifdef TOOLS_ENABLED
// This function is used to throttle back updates of animations and particle systems when using UPDATE_VITAL_ONLY mode.
// CASE 1) We are not in UPDATE_VITAL_ONLY mode - always return true and update.
// CASE 2) We are in UPDATE_VITAL_ONLY mode -
// In most cases this will return false and prevent animations etc updating.
// The exception is that we can also choose to receive a true
// each time a frame is redrawn as a result of moving the mouse, clicking etc.
// This enables us to keep e.g. particle systems processing, but ONLY when other
// events have caused a redraw.
virtual bool is_update_pending(bool p_include_redraws = false) const { return !_update_vital_only || (_update_pending && p_include_redraws); }
#else
// Always update when outside the editor, UPDATE_VITAL_ONLY has no effect outside the editor.
virtual bool is_update_pending(bool p_include_redraws = false) const { return true; }
#endif
virtual String get_executable_path() const;
virtual Error execute(const String &p_path, const List<String> &p_arguments, bool p_blocking = true, ProcessID *r_child_id = nullptr, String *r_pipe = nullptr, int *r_exitcode = nullptr, bool read_stderr = false, Mutex *p_pipe_mutex = nullptr, bool p_open_console = false) = 0;
virtual Error kill(const ProcessID &p_pid) = 0;
virtual int get_process_id() const;
virtual bool is_process_running(const ProcessID &p_pid) const = 0;
virtual void vibrate_handheld(int p_duration_ms = 500);
virtual Error shell_open(String p_uri);
virtual Error set_cwd(const String &p_cwd);
virtual bool has_environment(const String &p_var) const = 0;
virtual String get_environment(const String &p_var) const = 0;
virtual bool set_environment(const String &p_var, const String &p_value) const = 0;
virtual String get_name() const = 0;
virtual List<String> get_cmdline_args() const { return _cmdline; }
virtual String get_model_name() const;
void ensure_user_data_dir();
virtual MainLoop *get_main_loop() const = 0;
virtual void yield();
enum Weekday {
DAY_SUNDAY,
DAY_MONDAY,
DAY_TUESDAY,
DAY_WEDNESDAY,
DAY_THURSDAY,
DAY_FRIDAY,
DAY_SATURDAY
};
enum Month {
/// Start at 1 to follow Windows SYSTEMTIME structure
/// https://msdn.microsoft.com/en-us/library/windows/desktop/ms724950(v=vs.85).aspx
MONTH_JANUARY = 1,
MONTH_FEBRUARY,
MONTH_MARCH,
MONTH_APRIL,
MONTH_MAY,
MONTH_JUNE,
MONTH_JULY,
MONTH_AUGUST,
MONTH_SEPTEMBER,
MONTH_OCTOBER,
MONTH_NOVEMBER,
MONTH_DECEMBER
};
struct Date {
int year;
Month month;
int day;
Weekday weekday;
bool dst;
};
struct Time {
int hour;
int min;
int sec;
};
struct TimeZoneInfo {
int bias;
String name;
};
virtual Date get_date(bool local = false) const = 0;
virtual Time get_time(bool local = false) const = 0;
virtual TimeZoneInfo get_time_zone_info() const = 0;
virtual String get_iso_date_time(bool local = false) const;
virtual uint64_t get_unix_time() const;
virtual uint64_t get_system_time_secs() const;
virtual uint64_t get_system_time_msecs() const;
virtual double get_subsecond_unix_time() const; // For use in Time::get_unix_time().
virtual void delay_usec(uint32_t p_usec) const = 0;
virtual void add_frame_delay(bool p_can_draw);
virtual uint64_t get_ticks_usec() const = 0;
uint32_t get_ticks_msec() const;
uint64_t get_splash_tick_msec() const;
virtual bool can_draw() const = 0;
virtual bool is_userfs_persistent() const { return true; }
bool is_stdout_verbose() const;
bool is_stdout_debug_enabled() const;
virtual void disable_crash_handler() {}
virtual bool is_disable_crash_handler() const { return false; }
virtual void initialize_debugging() {}
enum CursorShape {
CURSOR_ARROW,
CURSOR_IBEAM,
CURSOR_POINTING_HAND,
CURSOR_CROSS,
CURSOR_WAIT,
CURSOR_BUSY,
CURSOR_DRAG,
CURSOR_CAN_DROP,
CURSOR_FORBIDDEN,
CURSOR_VSIZE,
CURSOR_HSIZE,
CURSOR_BDIAGSIZE,
CURSOR_FDIAGSIZE,
CURSOR_MOVE,
CURSOR_VSPLIT,
CURSOR_HSPLIT,
CURSOR_HELP,
CURSOR_MAX
};
virtual bool has_virtual_keyboard() const;
virtual void show_virtual_keyboard(const String &p_existing_text, const Rect2 &p_screen_rect = Rect2(), bool p_multiline = false, int p_max_input_length = -1, int p_cursor_start = -1, int p_cursor_end = -1);
virtual void hide_virtual_keyboard();
// returns height of the currently shown virtual keyboard (0 if keyboard is hidden)
virtual int get_virtual_keyboard_height() const;
virtual uint32_t keyboard_get_scancode_from_physical(uint32_t p_scancode) const;
virtual void set_cursor_shape(CursorShape p_shape);
virtual CursorShape get_cursor_shape() const;
virtual void set_custom_mouse_cursor(const RES &p_cursor, CursorShape p_shape, const Vector2 &p_hotspot);
virtual bool get_swap_ok_cancel() { return false; }
virtual void dump_memory_to_file(const char *p_file);
virtual void dump_resources_to_file(const char *p_file);
virtual void print_resources_in_use(bool p_short = false);
virtual void print_all_resources(String p_to_file = "");
virtual uint64_t get_static_memory_usage() const;
virtual uint64_t get_static_memory_peak_usage() const;
virtual uint64_t get_dynamic_memory_usage() const;
virtual uint64_t get_free_static_memory() const;
RenderThreadMode get_render_thread_mode() const { return _render_thread_mode; }
virtual String get_locale() const;
String get_locale_language() const;
virtual uint64_t get_embedded_pck_offset() const;
String get_safe_dir_name(const String &p_dir_name, bool p_allow_dir_separator = false) const;
virtual String get_godot_dir_name() const;
virtual String get_data_path() const;
virtual String get_config_path() const;
virtual String get_cache_path() const;
virtual String get_bundle_resource_dir() const;
virtual String get_bundle_icon_path() const;
virtual String get_user_data_dir() const;
virtual String get_resource_dir() const;
enum SystemDir {
SYSTEM_DIR_DESKTOP,
SYSTEM_DIR_DCIM,
SYSTEM_DIR_DOCUMENTS,
SYSTEM_DIR_DOWNLOADS,
SYSTEM_DIR_MOVIES,
SYSTEM_DIR_MUSIC,
SYSTEM_DIR_PICTURES,
SYSTEM_DIR_RINGTONES,
};
virtual String get_system_dir(SystemDir p_dir, bool p_shared_storage = true) const;
virtual Error move_to_trash(const String &p_path) { return FAILED; }
virtual void set_no_window_mode(bool p_enable);
virtual bool is_no_window_mode_enabled() const;
virtual bool has_touchscreen_ui_hint() const;
enum ScreenOrientation {
SCREEN_LANDSCAPE,
SCREEN_PORTRAIT,
SCREEN_REVERSE_LANDSCAPE,
SCREEN_REVERSE_PORTRAIT,
SCREEN_SENSOR_LANDSCAPE,
SCREEN_SENSOR_PORTRAIT,
SCREEN_SENSOR,
};
virtual void set_screen_orientation(ScreenOrientation p_orientation);
virtual ScreenOrientation get_screen_orientation() const;
ScreenOrientation get_screen_orientation_from_string(const String &p_orientation) const;
virtual void enable_for_stealing_focus(ProcessID pid) {}
virtual void move_window_to_foreground() {}
virtual void debug_break();
virtual void release_rendering_thread();
virtual void make_rendering_thread();
virtual void swap_buffers();
virtual void set_native_icon(const String &p_filename);
virtual void set_icon(const Ref<Image> &p_icon);
virtual int get_exit_code() const;
virtual void set_exit_code(int p_code);
virtual bool is_custom_exit_code();
virtual int get_processor_count() const;
virtual String get_processor_name() const;
virtual int get_default_thread_pool_size() const { return get_processor_count(); }
virtual String get_unique_id() const;
virtual Error native_video_play(String p_path, float p_volume, String p_audio_track, String p_subtitle_track);
virtual bool native_video_is_playing() const;
virtual void native_video_pause();
virtual void native_video_unpause();
virtual void native_video_stop();
virtual bool can_use_threads() const;
virtual Error dialog_show(String p_title, String p_description, Vector<String> p_buttons, Object *p_obj, String p_callback);
virtual Error dialog_input_text(String p_title, String p_description, String p_partial, Object *p_obj, String p_callback);
enum LatinKeyboardVariant {
LATIN_KEYBOARD_QWERTY,
LATIN_KEYBOARD_QWERTZ,
LATIN_KEYBOARD_AZERTY,
LATIN_KEYBOARD_QZERTY,
LATIN_KEYBOARD_DVORAK,
LATIN_KEYBOARD_NEO,
LATIN_KEYBOARD_COLEMAK,
};
virtual LatinKeyboardVariant get_latin_keyboard_variant() const;
virtual int keyboard_get_layout_count() const;
virtual int keyboard_get_current_layout() const;
virtual void keyboard_set_current_layout(int p_index);
virtual String keyboard_get_layout_language(int p_index) const;
virtual String keyboard_get_layout_name(int p_index) const;
virtual bool is_joy_known(int p_device);
virtual String get_joy_guid(int p_device) const;
enum EngineContext {
CONTEXT_EDITOR,
CONTEXT_PROJECTMAN,
CONTEXT_ENGINE,
};
virtual void set_context(int p_context);
//amazing hack because OpenGL needs this to be set on a separate thread..
//also core can't access servers, so a callback must be used
typedef void (*SwitchVSyncCallbackInThread)(bool);
static SwitchVSyncCallbackInThread switch_vsync_function;
void set_use_vsync(bool p_enable);
bool is_vsync_enabled() const;
//real, actual overridable function to switch vsync, which needs to be called from graphics thread if needed
virtual void _set_use_vsync(bool p_enable) {}
void set_vsync_via_compositor(bool p_enable);
bool is_vsync_via_compositor_enabled() const;
void set_delta_smoothing(bool p_enabled);
bool is_delta_smoothing_enabled() const;
virtual OS::PowerState get_power_state();
virtual int get_power_seconds_left();
virtual int get_power_percent_left();
virtual void force_process_input(){};
bool has_feature(const String &p_feature);
void set_has_server_feature_callback(HasServerFeatureCallback p_callback);
bool is_layered_allowed() const { return _allow_layered; }
bool is_hidpi_allowed() const { return _allow_hidpi; }
void set_restart_on_exit(bool p_restart, const List<String> &p_restart_arguments);
bool is_restart_on_exit_set() const;
List<String> get_restart_on_exit_arguments() const;
virtual bool request_permission(const String &p_name) { return true; }
virtual bool request_permissions() { return true; }
virtual Vector<String> get_granted_permissions() const { return Vector<String>(); }
virtual void process_and_drop_events() {}
OS();
virtual ~OS();
};
VARIANT_ENUM_CAST(OS::PowerState);
#endif // OS_H
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