Input.hpp

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#pragma once

#include <Gosu/Fwd.hpp>
#include <Gosu/Buttons.hpp>
#include <Gosu/Platform.hpp>
#include <Gosu/Utility.hpp>
#include <functional>
#include <memory>
#include <string>
#include <vector>

namespace Gosu
{
    struct Touch
    {
        void* id;
        double x, y;
    };
    typedef std::vector<Touch> Touches;

    class Input : Noncopyable
    {
        struct Impl;
        std::unique_ptr<Impl> pimpl;

    public:
    #ifdef GOSU_IS_IPHONE
        Input(void* view, float update_interval);
        void feed_touch_event(std::function<void (Touch)>& callback, void* touches);
    #else
        explicit Input(void* window);
        bool feed_sdl_event(void* event);
    #endif

        ~Input();

        static std::string id_to_char(Button btn);
        static Button char_to_id(std::string ch);

        static std::string button_name(Button btn);

        static std::string gamepad_name(int index);

        static bool down(Button btn);

        static double axis(Button btn);

        double mouse_x() const;
        double mouse_y() const;

        void set_mouse_position(double x, double y);

        // Undocumented for the moment. Also applies to current_touches().
        void set_mouse_factors(double factor_x, double factor_y,
            double offset_x = 0, double offset_y = 0);

        const Touches& current_touches() const;

        GOSU_DEPRECATED double accelerometer_x() const;
        GOSU_DEPRECATED double accelerometer_y() const;
        GOSU_DEPRECATED double accelerometer_z() const;

        void update();

        std::function<void (Button)> on_button_down, on_button_up;

        std::function<void (int)> on_gamepad_connected, on_gamepad_disconnected;

        std::function<void (Touch)> on_touch_began, on_touch_moved, on_touch_ended,
            on_touch_cancelled;

        TextInput* text_input() const;
        void set_text_input(TextInput* input);
    };
}