reactos/subsys/system/notepad/settings.c

   1 /*
   2  *  Notepad (settings.c)
   3  *
   4  *  Copyright 1998,99 Marcel Baur <mbaur@g26.ethz.ch>
   5  *  Copyright 2002 Sylvain Petreolle <spetreolle@yahoo.fr>
   6  *  Copyright 2002 Andriy Palamarchuk
   7  *
   8  * This library is free software; you can redistribute it and/or
   9  * modify it under the terms of the GNU Lesser General Public
  10  * License as published by the Free Software Foundation; either
  11  * version 2.1 of the License, or (at your option) any later version.
  12  *
  13  * This library is distributed in the hope that it will be useful,
  14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  16  * Lesser General Public License for more details.
  17  *
  18  * You should have received a copy of the GNU Lesser General Public
  19  * License along with this library; if not, write to the Free Software
  20  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  21  */
  22
  23 #define UNICODE
  24 #define _UNICODE
  25
  26 #include <assert.h>
  27 #include <stdio.h>
  28 #include <windows.h>
  29 #include <commdlg.h>
  30 #include <tchar.h>
  31
  32 #include "main.h"
  33
  34 static const TCHAR s_szRegistryKey[] = { 'S','o','f','t','w','a','r','e',
  35         '\\','M','i','c','r','o','s','o','f','t',
  36         '\\','N','o','t','e','p','a','d',0 };
  37
  38
  39 static LONG HeightFromPointSize(DWORD dwPointSize)
  40 {
  41         LONG lHeight;
  42         HDC hDC;
  43
  44         hDC = GetDC(NULL);
  45         lHeight = -MulDiv(dwPointSize, GetDeviceCaps(hDC, LOGPIXELSY), 720);
  46         ReleaseDC(NULL, hDC);
  47
  48         return lHeight;
  49 }
  50
  51 static DWORD PointSizeFromHeight(LONG lHeight)
  52 {
  53         DWORD dwPointSize;
  54         HDC hDC;
  55
  56         hDC = GetDC(NULL);
  57         dwPointSize = -MulDiv(lHeight, 720, GetDeviceCaps(hDC, LOGPIXELSY));
  58         ReleaseDC(NULL, hDC);
  59
  60         /* round to nearest multiple of 10 */
  61         dwPointSize += 5;
  62         dwPointSize -= dwPointSize % 10;
  63
  64         return dwPointSize;
  65 }
  66
  67 static BOOL QueryGeneric(HKEY hKey, LPCSTR pszValueName, DWORD dwExpectedType,
  68         LPVOID pvResult, DWORD dwResultSize)
  69 {
  70         WCHAR szValueW[32];
  71         LPCTSTR pszValueNameT;
  72         DWORD dwType, cbData;
  73         LPVOID *pTemp;
  74         BOOL bSuccess = FALSE;
  75
  76 #ifdef UNICODE
  77         MultiByteToWideChar(CP_ACP, 0, pszValueName, -1, szValueW, sizeof(szValueW) / sizeof(szValueW[0]));
  78         pszValueNameT = szValueW;
  79 #else
  80         pszValueNameT = pszValueName;
  81 #endif
  82
  83         pTemp = HeapAlloc(GetProcessHeap(), 0, dwResultSize);
  84         if (!pTemp)
  85                 goto done;
  86         memset(pTemp, 0, dwResultSize);
  87
  88         cbData = dwResultSize;
  89         if (RegQueryValueEx(hKey, pszValueNameT, NULL, &dwType, (LPBYTE) pTemp, &cbData) != ERROR_SUCCESS)
  90                 goto done;
  91
  92         if (dwType != dwExpectedType)
  93                 goto done;
  94
  95         memcpy(pvResult, pTemp, cbData);
  96         bSuccess = TRUE;
  97
  98 done:
  99         if (pTemp)
 100                 HeapFree(GetProcessHeap(), 0, pTemp);
 101         return bSuccess;
 102 }
 103
 104 static BOOL QueryDword(HKEY hKey, LPCSTR pszValueName, DWORD *pdwResult)
 105 {
 106         return QueryGeneric(hKey, pszValueName, REG_DWORD, pdwResult, sizeof(*pdwResult));
 107 }
 108
 109 static BOOL QueryByte(HKEY hKey, LPCSTR pszValueName, BYTE *pbResult)
 110 {
 111         DWORD dwResult;
 112         if (!QueryGeneric(hKey, pszValueName, REG_DWORD, &dwResult, sizeof(dwResult)))
 113                 return FALSE;
 114         if (dwResult >= 0x100)
 115                 return FALSE;
 116         *pbResult = (BYTE) dwResult;
 117         return TRUE;
 118 }
 119
 120 static BOOL QueryString(HKEY hKey, LPCSTR pszValueName, LPTSTR pszResult, DWORD dwResultSize)
 121 {
 122         return QueryGeneric(hKey, pszValueName, REG_SZ, pszResult, dwResultSize * sizeof(*pszResult));
 123 }
 124
 125 void LoadSettings(void)
 126 {
 127         HKEY hKey = NULL;
 128         HFONT hFont;
 129         DWORD dwPointSize = 0;
 130
 131         if (RegOpenKey(HKEY_CURRENT_USER, s_szRegistryKey, &hKey) == ERROR_SUCCESS)
 132         {
 133                 QueryByte(hKey,         "lfCharSet",            &Globals.lfFont.lfCharSet);
 134                 QueryByte(hKey,         "lfClipPrecision",      &Globals.lfFont.lfClipPrecision);
 135                 QueryDword(hKey,        "lfEscapement",         &Globals.lfFont.lfEscapement);
 136                 QueryString(hKey,       "lfFaceName",           Globals.lfFont.lfFaceName, sizeof(Globals.lfFont.lfFaceName) / sizeof(Globals.lfFont.lfFaceName[0]));
 137                 QueryByte(hKey,         "lfItalic",                     &Globals.lfFont.lfItalic);
 138                 QueryDword(hKey,        "lfOrientation",        &Globals.lfFont.lfOrientation);
 139                 QueryByte(hKey,         "lfOutPrecision",       &Globals.lfFont.lfOutPrecision);
 140                 QueryByte(hKey,         "lfPitchAndFamily",     &Globals.lfFont.lfPitchAndFamily);
 141                 QueryByte(hKey,         "lfQuality",            &Globals.lfFont.lfQuality);
 142                 QueryByte(hKey,         "lfStrikeOut",          &Globals.lfFont.lfStrikeOut);
 143                 QueryByte(hKey,         "lfUnderline",          &Globals.lfFont.lfUnderline);
 144                 QueryDword(hKey,        "lfWeight",                     &Globals.lfFont.lfWeight);
 145                 QueryDword(hKey,        "iPointSize",           &dwPointSize);
 146
 147                 if (dwPointSize != 0)
 148                         Globals.lfFont.lfHeight = HeightFromPointSize(dwPointSize);
 149
 150                 hFont = CreateFontIndirect(&Globals.lfFont);
 151                 if (hFont)
 152                 {
 153                         if (Globals.hFont)
 154                                 DeleteObject(Globals.hFont);
 155                         Globals.hFont = hFont;
 156                 }
 157
 158                 RegCloseKey(hKey);
 159         }
 160 }
 161
 162 static BOOL SaveDword(HKEY hKey, LPCSTR pszValueName, DWORD dwValue)
 163 {
 164         WCHAR szValueW[32];
 165         LPCTSTR pszValueNameT;
 166
 167 #ifdef UNICODE
 168         MultiByteToWideChar(CP_ACP, 0, pszValueName, -1, szValueW, sizeof(szValueW) / sizeof(szValueW[0]));
 169         pszValueNameT = szValueW;
 170 #else
 171         pszValueNameT = pszValueName;
 172 #endif
 173
 174         return RegSetValueEx(hKey, pszValueNameT, 0, REG_DWORD, (LPBYTE) &dwValue, sizeof(dwValue)) == ERROR_SUCCESS;
 175 }
 176
 177 static BOOL SaveString(HKEY hKey, LPCSTR pszValueName, LPCTSTR pszValue)
 178 {
 179         WCHAR szValueW[32];
 180         LPCTSTR pszValueNameT;
 181
 182 #ifdef UNICODE
 183         MultiByteToWideChar(CP_ACP, 0, pszValueName, -1, szValueW, sizeof(szValueW) / sizeof(szValueW[0]));
 184         pszValueNameT = szValueW;
 185 #else
 186         pszValueNameT = pszValueName;
 187 #endif
 188
 189         return RegSetValueEx(hKey, pszValueNameT, 0, REG_SZ, (LPBYTE) pszValue, _tcslen(pszValue) * sizeof(*pszValue)) == ERROR_SUCCESS;
 190 }
 191
 192 void SaveSettings(void)
 193 {
 194         HKEY hKey;
 195         DWORD dwDisposition;
 196
 197         if (RegCreateKeyEx(HKEY_CURRENT_USER, s_szRegistryKey, 0, NULL, 0, KEY_ALL_ACCESS, NULL, &hKey, &dwDisposition)
 198                 == ERROR_SUCCESS)
 199         {
 200                 SaveDword(hKey,         "lfCharSet",            Globals.lfFont.lfCharSet);
 201                 SaveDword(hKey,         "lfClipPrecision",      Globals.lfFont.lfClipPrecision);
 202                 SaveDword(hKey,         "lfEscapement",         Globals.lfFont.lfEscapement);
 203                 SaveString(hKey,        "lfFaceName",           Globals.lfFont.lfFaceName);
 204                 SaveDword(hKey,         "lfItalic",                     Globals.lfFont.lfItalic);
 205                 SaveDword(hKey,         "lfOrientation",        Globals.lfFont.lfOrientation);
 206                 SaveDword(hKey,         "lfOutPrecision",       Globals.lfFont.lfOutPrecision);
 207                 SaveDword(hKey,         "lfPitchAndFamily",     Globals.lfFont.lfPitchAndFamily);
 208                 SaveDword(hKey,         "lfQuality",            Globals.lfFont.lfQuality);
 209                 SaveDword(hKey,         "lfStrikeOut",          Globals.lfFont.lfStrikeOut);
 210                 SaveDword(hKey,         "lfUnderline",          Globals.lfFont.lfUnderline);
 211                 SaveDword(hKey,         "lfWeight",                     Globals.lfFont.lfWeight);
 212                 SaveDword(hKey,         "iPointSize",           PointSizeFromHeight(Globals.lfFont.lfHeight));
 213
 214                 RegCloseKey(hKey);
 215         }
 216
 217 }