gui_platform_input_handler.h

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#pragma once
 
#include <stdint.h>
#include <string_view>
#include <gui_core/gui_base_types.h>
#include <gui_core/gui_id.h>   // OnFileDrop's default body takes it by value
 
namespace tachyon
{
 
    enum class KeyCode : uint32_t;
    enum class KeyModifier : uint8_t;
    enum class KeyAction : uint8_t;
 
    enum class MouseButtons : uint8_t;
    enum class MouseAction : uint8_t;
    enum class FileDropAction : uint8_t;

    class IPlatformInputHandler
    {
    public:
        virtual ~IPlatformInputHandler() = default;
        virtual void OnKeyboard(tachyon::ID id, KeyCode key, int repeat, KeyModifier modifiers, KeyAction action) = 0;
        virtual void OnMouseMove(tachyon::ID id, tachyon::int2 screenPos, tachyon::MouseButtons buttons, KeyModifier modifiers) = 0;
        virtual void OnMouseButton(tachyon::ID id, tachyon::int2 screenPos, tachyon::MouseButtons buttons, KeyModifier modifiers, tachyon::MouseAction action) = 0;
        virtual void OnMouseScroll(tachyon::ID id, tachyon::int2 screenPos, tachyon::float2 scrollOffset, KeyModifier modifiers) = 0;
        virtual void OnTextComposition(tachyon::ID id, std::string_view text, int32_t cursor) = 0;
        virtual void OnFileDrop(tachyon::ID /*id*/, tachyon::int2 /*screenPos*/, FileDropAction /*action*/, std::string_view /*data*/) {}
    };

};