modules/rosapps/applications/notevil/notevil.c

   1 /*
   2  * notevil.c
   3  *
   4  * --------------------------------------------------------------------
   5  *
   6  * This software is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU Library General Public License as
   8  * published by the Free Software Foundation; either version 2 of the
   9  * License, or (at your option) any later version.
  10  *
  11  * This software is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14  * Library General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU Library General Public
  17  * License along with this software; see the file COPYING.LIB. If
  18  * not, write to the Free Software Foundation, Inc., 675 Mass Ave,
  19  * Cambridge, MA 02139, USA.
  20  *
  21  * --------------------------------------------------------------------
  22  * ReactOS Coders Console Parade
  23  *
  24  * 19990411 EA
  25  * 19990515 EA
  26  */
  27
  28 #include <windows.h>
  29 #include <stdio.h>
  30 #include "resource.h"
  31
  32 // #define DISPLAY_COORD
  33
  34 LPCWSTR app_name = L"notevil";
  35
  36 HANDLE  myself;
  37 HANDLE  ScreenBuffer;
  38 CONSOLE_SCREEN_BUFFER_INFO ScreenBufferInfo;
  39 HANDLE  WaitableTimer;
  40
  41 VOID
  42 WriteStringAt(LPWSTR lpString,
  43               COORD  xy,
  44               WORD   wColor)
  45 {
  46     DWORD cWritten = 0;
  47     WORD  wLen;
  48
  49     if (!lpString || *lpString == 0) return;
  50
  51     wLen = wcslen(lpString);
  52
  53     /* Don't bother writing text when erasing */
  54     if (wColor)
  55     {
  56         WriteConsoleOutputCharacterW(ScreenBuffer,
  57                                      lpString,
  58                                      wLen,
  59                                      xy,
  60                                      &cWritten);
  61     }
  62
  63     FillConsoleOutputAttribute(ScreenBuffer,
  64                                wColor,
  65                                wLen,
  66                                xy,
  67                                &cWritten);
  68 }
  69
  70
  71 #ifdef DISPLAY_COORD
  72 VOID
  73 WriteCoord(COORD c)
  74 {
  75     COORD xy = {0,0};
  76     WCHAR buf[40];
  77
  78     wsprintf(buf, L"x=%02d  y=%02d", c.X, c.Y);
  79
  80     WriteStringAt(buf, xy,
  81                   BACKGROUND_RED | BACKGROUND_GREEN | BACKGROUND_BLUE);
  82 }
  83 #endif /* def DISPLAY_COORD */
  84
  85
  86 VOID
  87 GetNextString(LPWSTR Buffer,
  88               INT    BufferSize,
  89               PDWORD Index)
  90 {
  91     if (RES_LAST_INDEX == *Index)
  92         *Index = RES_FIRST_INDEX;
  93     else
  94         ++*Index;
  95
  96     LoadStringW(myself, *Index, Buffer, BufferSize);
  97 }
  98
  99
 100 VOID
 101 DisplayTitle(VOID)
 102 {
 103     LPWSTR szTitle = L"ReactOS Coders Console Parade";
 104     COORD  xy;
 105
 106     xy.X = (ScreenBufferInfo.dwSize.X - wcslen(szTitle)) / 2;
 107     xy.Y = ScreenBufferInfo.dwSize.Y / 2;
 108
 109     WriteStringAt(szTitle, xy,
 110                   FOREGROUND_GREEN | FOREGROUND_INTENSITY);
 111 }
 112
 113
 114 #define RES_DELAY_CHANGE 12
 115 #define RES_BUFFER_SIZE  1024
 116 VOID
 117 MainLoop(VOID)
 118 {
 119     WCHAR NameString[RES_BUFFER_SIZE];
 120     DWORD NameIndex  = 0;
 121     INT   NameLength = 0;
 122     COORD xy;
 123     INT   n = RES_DELAY_CHANGE;
 124     INT   dir_y  = 1;
 125     INT   dir_x  = 1;
 126     WORD  wColor = 1;
 127
 128     xy.X = ScreenBufferInfo.dwSize.X / 2;
 129     xy.Y = ScreenBufferInfo.dwSize.Y / 2;
 130
 131     for ( ; 1; ++n )
 132     {
 133         if (n == RES_DELAY_CHANGE)
 134         {
 135             n = 0;
 136
 137             GetNextString(NameString,
 138                           RES_BUFFER_SIZE,
 139                           &NameIndex);
 140             NameLength = wcslen(NameString);
 141
 142             wColor++;
 143             if ((wColor & 0x000F) == 0)
 144                 wColor = 1;
 145         }
 146         if (xy.X == 0)
 147         {
 148             if (dir_x == -1)
 149                 dir_x = 1;
 150         }
 151         else if (xy.X >= ScreenBufferInfo.dwSize.X - NameLength - 1)
 152         {
 153             if (dir_x == 1)
 154                 dir_x = -1;
 155         }
 156         xy.X += dir_x;
 157
 158         if (xy.Y == 0)
 159         {
 160             if (dir_y == -1)
 161                 dir_y = 1;
 162         }
 163         else if (xy.Y >= ScreenBufferInfo.dwSize.Y - 1)
 164         {
 165             if (dir_y == 1)
 166                 dir_y = -1;
 167         }
 168         xy.Y += dir_y;
 169
 170 #ifdef DISPLAY_COORD
 171         WriteCoord(xy);
 172 #endif /* def DISPLAY_COORD */
 173
 174         DisplayTitle();
 175         WriteStringAt(NameString, xy, wColor);
 176         WaitForSingleObject(WaitableTimer, INFINITE);
 177         WriteStringAt(NameString, xy, 0);
 178     }
 179 }
 180
 181
 182 int wmain(int argc, WCHAR* argv[])
 183 {
 184     LARGE_INTEGER lint;
 185     DWORD Written;
 186     COORD Coord = { 0, 0 };
 187
 188     myself = GetModuleHandle(NULL);
 189
 190     GetConsoleScreenBufferInfo(GetStdHandle(STD_OUTPUT_HANDLE),
 191                                &ScreenBufferInfo);
 192     ScreenBufferInfo.dwSize.X = ScreenBufferInfo.srWindow.Right - ScreenBufferInfo.srWindow.Left + 1;
 193     ScreenBufferInfo.dwSize.Y = ScreenBufferInfo.srWindow.Bottom - ScreenBufferInfo.srWindow.Top + 1;
 194     ScreenBuffer = CreateConsoleScreenBuffer(GENERIC_WRITE,
 195                                              0,
 196                                              NULL,
 197                                              CONSOLE_TEXTMODE_BUFFER,
 198                                              NULL);
 199     if (ScreenBuffer == INVALID_HANDLE_VALUE)
 200     {
 201         wprintf(L"%s: could not create a new screen buffer\n", app_name);
 202         return EXIT_FAILURE;
 203     }
 204
 205     /* Fill buffer with black background */
 206     FillConsoleOutputAttribute(ScreenBuffer,
 207                                0,
 208                                ScreenBufferInfo.dwSize.X * ScreenBufferInfo.dwSize.Y,
 209                                Coord,
 210                                &Written);
 211
 212     WaitableTimer = CreateWaitableTimer(NULL, FALSE, NULL);
 213     if (WaitableTimer == INVALID_HANDLE_VALUE)
 214     {
 215         wprintf(L"CreateWaitabletimer() failed\n");
 216         return 1;
 217     }
 218     lint.QuadPart = -2000000;
 219     if (!SetWaitableTimer(WaitableTimer, &lint, 200, NULL, NULL, FALSE))
 220     {
 221         wprintf(L"SetWaitableTimer() failed: 0x%lx\n", GetLastError());
 222         return 2;
 223     }
 224     SetConsoleActiveScreenBuffer(ScreenBuffer);
 225     MainLoop();
 226     CloseHandle(ScreenBuffer);
 227     return EXIT_SUCCESS;
 228 }
 229
 230 /* EOF */