reactos/rosapps/applications/screensavers/matrix/settings.c

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//
// settings.c
//
// Load/Save settings from registry
//
#include <stdlib.h>
#include <windows.h>
#include <tchar.h>
#include "globals.h"
#include "message.h"
#include "matrix.h"
TCHAR g_szMessages[MAX_MESSAGES][MAXMSG_LENGTH];
int g_nNumMessages = 0;
int g_nMessageSpeed = 5;
TCHAR g_szFontName[512] = _T("Arial");
int g_nMatrixSpeed = 10;
int g_nDensity = 32;
int g_nFontSize = 12;
BOOL g_fRandomizeMessages = FALSE;
BOOL g_fFontBold = TRUE;
BOOL g_fScreenSaving = FALSE;
HFONT g_hFont;
void LoadSettings()
{
HKEY hkey;
LONG value;
ULONG len;
TCHAR *hugechar = malloc(4096);
TCHAR *hptr = hugechar;
if(hugechar == 0)
return;
hugechar[0] = _T('\0');
RegCreateKeyEx(HKEY_CURRENT_USER, _T("Software\\Catch22\\Matrix Screen Saver"), 0,
_T(""), 0, KEY_READ, NULL, &hkey, NULL);
len = sizeof value;
if(ERROR_SUCCESS == RegQueryValueEx(hkey, _T("MessageSpeed"), 0, 0, (BYTE *)&value, &len))
{
if(value >= MSGSPEED_MIN && value <= MSGSPEED_MAX)
g_nMessageSpeed = value;
}
if(ERROR_SUCCESS == RegQueryValueEx(hkey, _T("MatrixSpeed"), 0, 0, (BYTE *)&value, &len))
{
if(value >= SPEED_MIN && value <= SPEED_MAX)
g_nMatrixSpeed = value;
}
if(ERROR_SUCCESS == RegQueryValueEx(hkey, _T("Density"), 0, 0, (BYTE *)&value, &len))
{
if(value >= DENSITY_MIN && value <= DENSITY_MAX)
g_nDensity = value;
}
if(ERROR_SUCCESS == RegQueryValueEx(hkey, _T("FontSize"), 0, 0, (BYTE *)&value, &len))
{
if(value >= FONT_MIN && value <= FONT_MAX)
g_nFontSize = value;
}
if(ERROR_SUCCESS == RegQueryValueEx(hkey, _T("FontBold"), 0, 0, (BYTE *)&value, &len))
g_fFontBold = (value == 0 ? FALSE : TRUE);
if(ERROR_SUCCESS == RegQueryValueEx(hkey, _T("Randomize"), 0, 0, (BYTE *)&value, &len))
g_fRandomizeMessages = (value == 0 ? FALSE : TRUE);
len = 4096;
if(ERROR_SUCCESS == RegQueryValueEx(hkey, _T("FontName"), 0, 0, (BYTE *)hugechar, &len))
{
if(len > 0)
lstrcpy(g_szFontName, hugechar);
else
lstrcpy(g_szFontName, _T("Arial"));
}
len = 4096;
if(ERROR_SUCCESS == RegQueryValueEx(hkey, _T("Messages"), 0, 0 , (BYTE *)hugechar, &len))
{
while(len > 0 && *hptr && isascii(*hptr))
{
if(lstrlen(hptr) > 0)
{
lstrcpyn(g_szMessages[g_nNumMessages], hptr, MAXMSG_LENGTH);
++g_nNumMessages;
hptr += lstrlen(hptr) + 1;
}
}
}
else
{
/* built-in coded message for first run */
lstrcpyn(g_szMessages[0], _T("ReactOS"), MAXMSG_LENGTH);
++g_nNumMessages;
}
RegCloseKey(hkey);
free(hugechar);
}
void SaveSettings()
{
HKEY hkey;
TCHAR *hugechar = malloc(4096);
TCHAR *msgptr = hugechar;
int totallen = 0;
int i,len;
LONG value;
if(hugechar == 0)
return;
hugechar[0] = _T('\0');
msgptr = hugechar;
RegCreateKeyEx(HKEY_CURRENT_USER, _T("Software\\Catch22\\Matrix Screen Saver"), 0,
_T(""), 0, KEY_WRITE, NULL, &hkey, NULL);
value = g_nMessageSpeed;
RegSetValueEx(hkey, _T("MessageSpeed"), 0, REG_DWORD, (BYTE *)&value, sizeof value);
value = g_nMatrixSpeed;
RegSetValueEx(hkey, _T("MatrixSpeed"), 0, REG_DWORD, (BYTE *)&value, sizeof value);
value = g_nDensity;
RegSetValueEx(hkey, _T("Density"), 0, REG_DWORD, (BYTE *)&value, sizeof value);
value = g_nFontSize;
RegSetValueEx(hkey, _T("FontSize"), 0, REG_DWORD, (BYTE *)&value, sizeof value);
value = g_fRandomizeMessages;
RegSetValueEx(hkey, _T("Randomize"), 0, REG_DWORD, (BYTE *)&value, sizeof value);
value = g_fFontBold;
RegSetValueEx(hkey, _T("FontBold"), 0, REG_DWORD, (BYTE *)&value, sizeof value);
RegSetValueEx(hkey, _T("FontName"), 0, REG_SZ, (BYTE *)g_szFontName, lstrlen(g_szFontName));
for(i = 0; i < g_nNumMessages; i++)
{
len = lstrlen(g_szMessages[i]);
if(len > 0 && totallen+len < 4096)
{
lstrcpyn(msgptr, g_szMessages[i], 4096-totallen);
totallen += len + 1;
msgptr += len + 1;
}
}
*msgptr = _T('\0');
totallen++;
RegSetValueEx(hkey, _T("Messages"), 0, REG_MULTI_SZ, (BYTE *)hugechar, totallen);
RegCloseKey(hkey);
free(hugechar);
}