Main.cpp

Go to the documentation of this file.

 
 
// MIT License
//
// Copyright (c) 2020 Ian Parberry
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to
// deal in the Software without restriction, including without limitation the
// rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
// sell copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
// IN THE SOFTWARE.
 
#include "Includes.h"
 
#include "CMain.h"
 
static CMain* g_pMain = nullptr; 
 
 
LRESULT CALLBACK WndProc(HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam){
  UINT nMenuId = 0; //menu identifier for menu command messages
  static bool bResizing = false;
 
  switch(message){
    case WM_CREATE: //window has been created
      g_pMain = new CMain(hWnd); //create the main class
      return 0;
 
    case WM_DESTROY: //window has been removed from the screen
      delete g_pMain; //delete the main class
      PostQuitMessage(0); //ready to shut down
      return 0;
 
    case WM_PAINT: //window needs to be redrawn
      g_pMain->OnPaint();
      return 0;
 
    case WM_COMMAND: //user has selected a command from the menu
      nMenuId = LOWORD(wParam); //menu id
 
      switch(nMenuId){  
 
        case IDM_FILE_GENERATE:
          g_pMain->Generate();
          g_pMain->Draw();
          InvalidateRect(hWnd, nullptr, FALSE);
          break;
 
        case IDM_FILE_SAVE: //save bitmap to image file       
          SaveBitmap(hWnd, g_pMain->GetBitmap());
          break;
 
        case IDM_FILE_QUIT: //so long, farewell, auf weidersehn, goodbye!
          SendMessage(hWnd, WM_CLOSE, 0, 0);
          break;
 
        case IDM_TILESET_DEFAULT:
        case IDM_TILESET_FLOWER:
        case IDM_TILESET_MUD:
        case IDM_TILESET_GRASS:
          g_pMain->LoadTileSet(nMenuId, 8); //load tile set
          g_pMain->Draw(); //draw with current tiling
          InvalidateRect(hWnd, nullptr, FALSE); //show in window
          break;
 
        case IDM_HELP_HELP:
          ShellExecute(0, 0, 
            "https://ian-parberry.github.io/wangtiler/html/", 
            0, 0, SW_SHOW);
          break;
 
        case IDM_HELP_ABOUT:     
          MessageBox(nullptr, 
            "Copyright © Ian Parberry, 2022.\nSource code available under the MIT License from https://github.com/Ian-Parberry/wangtiler.", 
            "About", MB_ICONINFORMATION | MB_OK);
          break;
      } //switch
 
      return 0; //all is good
 
    default: 
      return DefWindowProc(hWnd, message, wParam, lParam); //not my message
  } //switch
} //WndProc
 
 
int WINAPI wWinMain(HINSTANCE hInst, HINSTANCE hPrev, LPWSTR lpStr, int nShow){
  UNREFERENCED_PARAMETER(hPrev); //nope
  UNREFERENCED_PARAMETER(lpStr); //nope nope
 
  InitWindow(hInst, nShow, WndProc); //create and show a window
 
  MSG msg; //current message
 
  while(GetMessage(&msg, nullptr, 0, 0)){ //message pump
    TranslateMessage(&msg);
    DispatchMessage(&msg);
  } //while
 
  return (int)msg.wParam;
} //wWinMain