/*************************************************************************/
/*  input.h                                                              */
/*************************************************************************/
/*                       This file is part of:                           */
/*                           GODOT ENGINE                                */
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/* Copyright (c) 2007-2020 Juan Linietsky, Ariel Manzur.                 */
/* Copyright (c) 2014-2020 Godot Engine contributors (cf. AUTHORS.md).   */
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/* "Software"), to deal in the Software without restriction, including   */
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/*************************************************************************/

#ifndef INPUT_H
#define INPUT_H

#include "core/object.h"
#include "core/os/main_loop.h"
#include "core/os/thread_safe.h"

class Input : public Object {

	GDCLASS(Input, Object);

	static Input *singleton;

protected:
	static void _bind_methods();

public:
	enum MouseMode {
		MOUSE_MODE_VISIBLE,
		MOUSE_MODE_HIDDEN,
		MOUSE_MODE_CAPTURED,
		MOUSE_MODE_CONFINED
	};

#undef CursorShape
	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
	};

	void set_mouse_mode(MouseMode p_mode);
	MouseMode get_mouse_mode() const;

	static Input *get_singleton();

	virtual bool is_key_pressed(int p_scancode) const = 0;
	virtual bool is_mouse_button_pressed(int p_button) const = 0;
	virtual bool is_joy_button_pressed(int p_device, int p_button) const = 0;
	virtual bool is_action_pressed(const StringName &p_action) const = 0;
	virtual bool is_action_just_pressed(const StringName &p_action) const = 0;
	virtual bool is_action_just_released(const StringName &p_action) const = 0;
	virtual float get_action_strength(const StringName &p_action) const = 0;

	virtual float get_joy_axis(int p_device, int p_axis) const = 0;
	virtual String get_joy_name(int p_idx) = 0;
	virtual Array get_connected_joypads() = 0;
	virtual void joy_connection_changed(int p_idx, bool p_connected, String p_name, String p_guid) = 0;
	virtual void add_joy_mapping(String p_mapping, bool p_update_existing = false) = 0;
	virtual void remove_joy_mapping(String p_guid) = 0;
	virtual bool is_joy_known(int p_device) = 0;
	virtual String get_joy_guid(int p_device) const = 0;
	virtual Vector2 get_joy_vibration_strength(int p_device) = 0;
	virtual float get_joy_vibration_duration(int p_device) = 0;
	virtual uint64_t get_joy_vibration_timestamp(int p_device) = 0;
	virtual void start_joy_vibration(int p_device, float p_weak_magnitude, float p_strong_magnitude, float p_duration = 0) = 0;
	virtual void stop_joy_vibration(int p_device) = 0;
	virtual void vibrate_handheld(int p_duration_ms = 500) = 0;

	virtual Point2 get_mouse_position() const = 0;
	virtual Point2 get_last_mouse_speed() const = 0;
	virtual int get_mouse_button_mask() const = 0;

	virtual void warp_mouse_position(const Vector2 &p_to) = 0;
	virtual Point2i warp_mouse_motion(const Ref<InputEventMouseMotion> &p_motion, const Rect2 &p_rect) = 0;

	virtual Vector3 get_gravity() const = 0;
	virtual Vector3 get_accelerometer() const = 0;
	virtual Vector3 get_magnetometer() const = 0;
	virtual Vector3 get_gyroscope() const = 0;

	virtual void action_press(const StringName &p_action, float p_strength = 1.f) = 0;
	virtual void action_release(const StringName &p_action) = 0;

	void get_argument_options(const StringName &p_function, int p_idx, List<String> *r_options) const;

	virtual bool is_emulating_touch_from_mouse() const = 0;
	virtual bool is_emulating_mouse_from_touch() const = 0;

	virtual CursorShape get_default_cursor_shape() const = 0;
	virtual void set_default_cursor_shape(CursorShape p_shape) = 0;
	virtual CursorShape get_current_cursor_shape() const = 0;
	virtual void set_custom_mouse_cursor(const RES &p_cursor, CursorShape p_shape = CURSOR_ARROW, const Vector2 &p_hotspot = Vector2()) = 0;

	virtual String get_joy_button_string(int p_button) = 0;
	virtual String get_joy_axis_string(int p_axis) = 0;
	virtual int get_joy_button_index_from_string(String p_button) = 0;
	virtual int get_joy_axis_index_from_string(String p_axis) = 0;

	virtual void parse_input_event(const Ref<InputEvent> &p_event) = 0;
	virtual void accumulate_input_event(const Ref<InputEvent> &p_event) = 0;
	virtual void flush_accumulated_events() = 0;
	virtual void set_use_accumulated_input(bool p_enable) = 0;

	Input();
};

VARIANT_ENUM_CAST(Input::MouseMode);
VARIANT_ENUM_CAST(Input::CursorShape);

#endif // INPUT_H
