System.h

//Copyright © 2014 SDXFramework
//[License]GNU Affero General Public License, version 3
//[Contact]http://sourceforge.jp/projects/dxframework/
#pragma once
#include <Multimedia/Window.h>
#include <Multimedia/Input.h>
#include <Multimedia/Font.h>

namespace SDX
{
    enum class Platform
    {
        Windows,
        MacOSX,
        GNU_Linux,
        iOS,
        Android,
        Unknown,
    };

    class System
    {
        friend class Window;

    private:
        MONO_STATE(System)

        
        static bool& IsEnd()
        {
            static bool isEnd;
            return isEnd;
        }
    public:
        static std::string inputText;
        static std::string textComposition;
        static int textCursor;
        static int textSelection_len;

        static void Initialise(const char* ウィンドウ名, int 幅, int 高さ, bool フルスクリーンフラグ = false)
        {
            if (SDL_Init(SDL_INIT_TIMER | SDL_INIT_AUDIO | SDL_INIT_VIDEO) < 0)
            {
                exit(1);
                return;
            }

#ifndef TABLET
            SDL_JoystickEventState(SDL_ENABLE);

            if (SDL_NumJoysticks() > 0)
            {
                Input::pad.Open();
            }
#endif

            SubWindow::mainWindow.Create(ウィンドウ名,幅,高さ,フルスクリーンフラグ);
            Screen::SetRenderer(Renderer::mainRenderer);
            Window::SetWindow(SubWindow::mainWindow);

            //タブレットと画面サイズを合わせる
#ifdef TABLET
            int dpiX;
            int dpiY;
            SDL_GetWindowSize(SubWindow::mainWindow.handle, &dpiX, &dpiY);
            SubWindow::mainWindow.aspect = (double)dpiX / dpiY;
            SDL_RenderSetLogicalSize(Screen::GetHandle(), 幅, 高さ);
#endif
            //デフォルトフォントの設定
            setlocale(LC_CTYPE, "jpn");//文字コードを日本語に

#ifndef OMIT_SDL2_TTF
            TTF_Init();
#endif
            Drawing::SetDefaultFont(SystemFont::Gothic, 16 , 2 );
            SDL_InitSubSystem(SDL_INIT_JOYSTICK | SDL_INIT_GAMECONTROLLER | SDL_INIT_EVERYTHING);

            //音声関連の初期化
            Mix_Init(MIX_INIT_MP3 | MIX_INIT_OGG);
            Mix_OpenAudio(44100, AUDIO_S16, 2, 1024);
            Mix_AllocateChannels(16);

            Mix_HookMusicFinished(Music::Finished);

            SDL_StopTextInput();

            IsEnd() = false;
        }

        static bool End()
        {
#ifndef OMIT_SDL2_TTF
            TTF_Quit();
#endif
            Mix_CloseAudio();
            Mix_Quit();
            SDL_Quit();
            Window::activeWindow->Destroy();
            IsEnd() = true;
            return true;
        }

        static bool Update(bool 描画更新フラグ = true)
        {
            if (描画更新フラグ)
            {
                Screen::Flip();
                Screen::Clear();
            }
            Input::Update();
            bool result = System::ProcessMessage();

            Music::Update();

            return result;
        }

        static bool ProcessMessage()
        {
            SDL_Event event;

            while (SDL_PollEvent(&event))
            {
                switch (event.type)
                {
                    case SDL_WINDOWEVENT:
                        switch (event.window.event)
                        {
                        case SDL_WINDOWEVENT_CLOSE:
#ifndef TABLET
                            //ここでIDに応じてDestroy等する
                            SubWindow::CheckWindowID(event.window.windowID);
                            if (SubWindow::mainWindow.handle == nullptr)
                            {
                                IsEnd() = true;
                                for (auto it : SubWindow::windowS)
                                {
                                    it->Destroy();
                                }
                            }
#endif
                            break;
#ifdef TABLET
                        case SDL_WINDOWEVENT_MINIMIZED:
                            //スリープに入った時、再生中ならBGMを停止する
                            if (Music::Check())
                            {
                                Mix_PauseMusic();
                            }
                            break;
                        case SDL_WINDOWEVENT_RESTORED:
                            //BGMを止めていたら、再開する
                            Mix_ResumeMusic();
                            break;
#endif
                        }
                        break;
                    case SDL_QUIT:
                        IsEnd() = true;
                        break;
                    case SDL_TEXTINPUT:
                        inputText += event.text.text;
                        break;
                    case SDL_TEXTEDITING:
                        //Windowsでは無効
                        textComposition = event.edit.text;
                        textCursor = event.edit.start;
                        textSelection_len = event.edit.length;
                        break;
                    default:
                        Input::GetState(event);
                        break;
                }
            }

            return !IsEnd();
        }

        static void Wait(int 停止ミリ秒)
        {
            SDL_Delay(停止ミリ秒);
        }

        static void WaitKey()
        {
            while (!Keyboard::HoldAnyKey() && System::ProcessMessage()){}
        }

        static Platform GetPlatform()
        {
#ifdef __WINDOWS__
            return Platform::Windows;
#elif defined(__MACOSX__)
            return Platform::MacOSX;
#elif defined(__LINUX__)
            return Platform::GNU_Linux;
#elif defined(__ANDROID__)
            return Platform::Android;
#elif defined(__IPHONEOS__)
            return Platform::iOS;
#endif
            return Platform::Unknown;
        }
        
        static bool IsTablet()
        {
#ifdef __WINDOWS__
            return false;
#elif defined(__MACOSX__)
            return false;
#elif defined(__LINUX__)
            return false;
#elif defined(__ANDROID__)
            return true;
#elif defined(__IPHONEOS__)
            return true;
#endif
            return false;
        }

    };
}