reactos/rosapps/applications/notevil/notevil.c

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/*
* notevil.c
*
* --------------------------------------------------------------------
*
* This software is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public License as
* published by the Free Software Foundation; either version 2 of the
* License, or (at your option) any later version.
*
* This software is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this software; see the file COPYING.LIB. If
* not, write to the Free Software Foundation, Inc., 675 Mass Ave,
* Cambridge, MA 02139, USA.
*
* --------------------------------------------------------------------
* ReactOS Coders Console Parade
*
* 19990411 EA
* 19990515 EA
*/
#include <windows.h>
#include <stdio.h>
#include "resource.h"
// #define DISPLAY_COORD
LPCWSTR app_name = L"notevil";
HANDLE myself;
HANDLE ScreenBuffer;
CONSOLE_SCREEN_BUFFER_INFO ScreenBufferInfo;
HANDLE WaitableTimer;
VOID
WriteStringAt(LPWSTR lpString,
COORD xy,
WORD wColor)
{
DWORD cWritten = 0;
WORD wLen;
if (!lpString || *lpString == 0) return;
wLen = wcslen(lpString);
/* Don't bother writing text when erasing */
if (wColor)
{
WriteConsoleOutputCharacterW(ScreenBuffer,
lpString,
wLen,
xy,
&cWritten);
}
FillConsoleOutputAttribute(ScreenBuffer,
wColor,
wLen,
xy,
&cWritten);
}
#ifdef DISPLAY_COORD
VOID
WriteCoord(COORD c)
{
COORD xy = {0,0};
WCHAR buf[40];
wsprintf(buf, L"x=%02d y=%02d", c.X, c.Y);
WriteStringAt(buf, xy,
BACKGROUND_RED | BACKGROUND_GREEN | BACKGROUND_BLUE);
}
#endif /* def DISPLAY_COORD */
VOID
GetNextString(LPWSTR Buffer,
INT BufferSize,
PDWORD Index)
{
if (RES_LAST_INDEX == *Index)
*Index = RES_FIRST_INDEX;
else
++*Index;
LoadStringW(myself, *Index, Buffer, BufferSize);
}
VOID
DisplayTitle(VOID)
{
LPWSTR szTitle = L"ReactOS Coders Console Parade";
COORD xy;
xy.X = (ScreenBufferInfo.dwSize.X - wcslen(szTitle)) / 2;
xy.Y = ScreenBufferInfo.dwSize.Y / 2;
WriteStringAt(szTitle, xy,
FOREGROUND_GREEN | FOREGROUND_INTENSITY);
}
#define RES_DELAY_CHANGE 12
#define RES_BUFFER_SIZE 1024
VOID
MainLoop(VOID)
{
WCHAR NameString[RES_BUFFER_SIZE];
DWORD NameIndex = 0;
INT NameLength = 0;
COORD xy;
INT n = RES_DELAY_CHANGE;
INT dir_y = 1;
INT dir_x = 1;
WORD wColor = 1;
xy.X = ScreenBufferInfo.dwSize.X / 2;
xy.Y = ScreenBufferInfo.dwSize.Y / 2;
for ( ; 1; ++n )
{
if (n == RES_DELAY_CHANGE)
{
n = 0;
GetNextString(NameString,
RES_BUFFER_SIZE,
&NameIndex);
NameLength = wcslen(NameString);
wColor++;
if ((wColor & 0x000F) == 0)
wColor = 1;
}
if (xy.X == 0)
{
if (dir_x == -1)
dir_x = 1;
}
else if (xy.X >= ScreenBufferInfo.dwSize.X - NameLength - 1)
{
if (dir_x == 1)
dir_x = -1;
}
xy.X += dir_x;
if (xy.Y == 0)
{
if (dir_y == -1)
dir_y = 1;
}
else if (xy.Y >= ScreenBufferInfo.dwSize.Y - 1)
{
if (dir_y == 1)
dir_y = -1;
}
xy.Y += dir_y;
#ifdef DISPLAY_COORD
WriteCoord(xy);
#endif /* def DISPLAY_COORD */
DisplayTitle();
WriteStringAt(NameString, xy, wColor);
WaitForSingleObject(WaitableTimer, INFINITE);
WriteStringAt(NameString, xy, 0);
}
}
int wmain(int argc, WCHAR* argv[])
{
LARGE_INTEGER lint;
DWORD Written;
COORD Coord = { 0, 0 };
myself = GetModuleHandle(NULL);
GetConsoleScreenBufferInfo(GetStdHandle(STD_OUTPUT_HANDLE),
&ScreenBufferInfo);
ScreenBufferInfo.dwSize.X = ScreenBufferInfo.srWindow.Right - ScreenBufferInfo.srWindow.Left + 1;
ScreenBufferInfo.dwSize.Y = ScreenBufferInfo.srWindow.Bottom - ScreenBufferInfo.srWindow.Top + 1;
ScreenBuffer = CreateConsoleScreenBuffer(GENERIC_WRITE,
0,
NULL,
CONSOLE_TEXTMODE_BUFFER,
NULL);
if (ScreenBuffer == INVALID_HANDLE_VALUE)
{
wprintf(L"%s: could not create a new screen buffer\n", app_name);
return EXIT_FAILURE;
}
/* Fill buffer with black background */
FillConsoleOutputAttribute(ScreenBuffer,
0,
ScreenBufferInfo.dwSize.X * ScreenBufferInfo.dwSize.Y,
Coord,
&Written);
WaitableTimer = CreateWaitableTimer(NULL, FALSE, NULL);
if (WaitableTimer == INVALID_HANDLE_VALUE)
{
wprintf(L"CreateWaitabletimer() failed\n");
return 1;
}
lint.QuadPart = -2000000;
if (!SetWaitableTimer(WaitableTimer, &lint, 200, NULL, NULL, FALSE))
{
wprintf(L"SetWaitableTimer() failed: 0x%lx\n", GetLastError());
return 2;
}
SetConsoleActiveScreenBuffer(ScreenBuffer);
MainLoop();
CloseHandle(ScreenBuffer);
return EXIT_SUCCESS;
}
/* EOF */