system.h

[詳解]

/*
 * Copyright 2001-2021 oZ/acy (名賀月晃嗣)
 * Redistribution and use in source and binary forms, 
 *     with or without modification, 
 *   are permitted provided that the following conditions are met:
 *
 * 1. Redistributions of source code must retain the above copyright notice,
 *    this list of conditions and the following disclaimer.
 *
 * 2. Redistributions in binary form must reproduce the above copyright notice,
 *    this list of conditions and the following disclaimer in the documentation
 *    and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, 
 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF 
 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 *
 */
#ifndef INCLUDE_GUARD_URANIA_SYSTEM_H
#define INCLUDE_GUARD_URANIA_SYSTEM_H
 
// windows.hのmin/maxマクロの抑止
#ifndef NOMINMAX
#define NOMINMAX
#endif 
 
#include <windows.h>
#include <string>
#include <vector>
#include "decl.h"
 
 
class urania::System
{
  friend class urania::WndBase;
  friend class urania::Menu;
 
private:
  static HINSTANCE hi_S;
 
private:
  System() =delete; //インスタンス生成禁止
 
public:
  static void start(HINSTANCE hi)
  {
    hi_S = hi;
  }
 
  static void quit(int r)
  {
    ::PostQuitMessage(r);
  }
 
  static int messageLoop();
 
  template<class Func_> static int messageLoop(Func_ f);
 
 
  // メッセージボックス系
 
  static void alert(const std::wstring& title, const std::wstring& msg)
  {
    ::MessageBox(NULL, msg.c_str(), title.c_str(), MB_OK | MB_ICONEXCLAMATION);
  }
 
  static void notify(const std::wstring& title, const std::wstring& msg)
  {
    ::MessageBox(NULL, msg.c_str(), title.c_str(), MB_OK);
  }
 
  static int askYesNoCancel(const std::wstring& title, const std::wstring& msg)
  {
    int res = ::MessageBox(NULL, msg.c_str(), title.c_str(), MB_YESNOCANCEL);
    switch(res)
    {
    case IDYES:
      return 1;
    case IDNO:
      return 0;
    case IDCANCEL:
      return 2;
    default:
      return 2;  // キャンセル
    }
  }
 
  static bool askYesNo(const std::wstring& title, const std::wstring& msg)
  {
    int res = ::MessageBox(NULL, msg.c_str(), title.c_str(), MB_YESNO);
    if (res == IDYES)
      return true;
    else
      return false;
  }
 
 
  // カーソル系
  static void showCursor()
    { 
      ::ShowCursor(TRUE);
    }
  static void hideCursor()
    {
      ::ShowCursor(FALSE);
    }
 
  static std::wstring getLongPathName(const std::wstring& path);
 
  // コマンドライン引數を取得する。
  // 廢用
  //static std::vector<std::string> getCmdLineArgs();
 
 
  static std::vector<std::wstring> getCmdLineArgsW();
 
  static std::vector<std::wstring> getCmdLineArgsW(const wchar_t* cmdline);
 
  // ワイド文字列・マルチバイト文字列變換 (Win32API使用)
  static std::string strcpyWideToMultiByte(const std::wstring& ws);
  static std::wstring strcpyMultiByteToWide(const std::string& ws);
 
 
  static int getDesktopWidth()
  {
    RECT rc;
    ::GetWindowRect(NULL, &rc);
    return rc.right - rc.left;
  }
 
  static int getDesktopHeight()
  {
    RECT rc;
    ::GetWindowRect(NULL, &rc);
    return rc.bottom - rc.top;
  }
};
 
 
 
 
template<class Func_>
inline
int urania::System::messageLoop(Func_ f)
{
  MSG msg;
  bool idle = true;
 
  for (;;) {
    if (::PeekMessage(&msg, NULL, 0, 0, PM_REMOVE)) {
      if (msg.message == WM_QUIT) {
        return msg.wParam;
        //舊
        //::PostQuitMessage(0);
        //return;
      }
 
      ::TranslateMessage(&msg);
      ::DispatchMessage(&msg);
 
      idle = true;
    }
    else if (idle) {
      if (!f())
        idle = false;
    }
    else {
      ::WaitMessage();
    }
  }
 
  return -1; //到達不能の筈だが念の爲
}
 
 
 
 
#endif // INCLUDE_GUARD_URANIA_SYSTEM_H