modules/rosapps/applications/screensavers/ssstars/settings.c

   1 /*
   2  * Star field screensaver
   3  *
   4  * Copyright 2011 Carlo Bramini
   5  *
   6  * This library is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU Lesser General Public
   8  * License as published by the Free Software Foundation; either
   9  * version 2.1 of the License, or (at your option) any later version.
  10  *
  11  * This library 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  * Lesser General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU Lesser General Public
  17  * License along with this library; if not, write to the Free Software
  18  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
  19  */
  20
  21 #define WIN32_LEAN_AND_MEAN
  22 #include <windows.h>
  23 #include <tchar.h>
  24 #include <commctrl.h>
  25 #include <shellapi.h>
  26
  27 #include "resource.h"
  28 #include "settings.h"
  29
  30 #define SIZEOF(_v)  (sizeof(_v) / sizeof(*_v))
  31
  32 // Options for the starfield
  33 SSSTARS Settings;
  34
  35 // Factory default settings.
  36 static const SSSTARS FactoryDefaults = {
  37     MAX_STARS,
  38     20,
  39     ROTATION_PERIODIC,
  40
  41     TRUE,
  42     TRUE,
  43     TRUE,
  44     TRUE
  45 };
  46
  47 static const DWORD RotoStrings[] = {
  48     IDS_ROTATION_NONE,
  49     IDS_ROTATION_LINEAR,
  50     IDS_ROTATION_PERIODIC
  51 };
  52
  53 static DWORD QueryDWORD(HKEY hKey, LPCTSTR pszValueName, DWORD Default)
  54 {
  55     DWORD dwData, dwType, cbData;
  56     LONG  lRes;
  57
  58     dwType = REG_DWORD;
  59     cbData = sizeof(DWORD);
  60
  61     lRes = RegQueryValueEx(
  62                 hKey,
  63                 pszValueName,
  64                 NULL,
  65                 &dwType,
  66                 (LPBYTE)&dwData,
  67                 &cbData);
  68
  69     if (lRes != ERROR_SUCCESS || dwType != REG_DWORD)
  70         return Default;
  71
  72     return dwData;
  73 }
  74
  75 static void SaveDWORD(HKEY hKey, LPCTSTR pszValueName, DWORD dwValue)
  76 {
  77     RegSetValueEx(hKey, pszValueName, 0, REG_DWORD, (LPBYTE)&dwValue, sizeof(dwValue));
  78 }
  79
  80
  81 void LoadSettings(void)
  82 {
  83     HKEY  hKey;
  84     LONG  lRes;
  85
  86     Settings = FactoryDefaults;
  87
  88     lRes = RegCreateKeyEx(
  89             HKEY_CURRENT_USER,
  90             _T("Software\\Microsoft\\ScreenSavers\\Ssstars"),
  91             0,
  92             _T(""),
  93             0,
  94             KEY_READ,
  95             NULL,
  96             &hKey,
  97             NULL);
  98
  99     if (lRes != ERROR_SUCCESS)
 100         return;
 101
 102     Settings.uiNumStars = QueryDWORD(hKey, _T("NumberOfStars"),  Settings.uiNumStars);
 103     Settings.uiSpeed    = QueryDWORD(hKey, _T("Speed"),          Settings.uiSpeed);
 104     Settings.uiRotation = QueryDWORD(hKey, _T("TypeOfRotation"), Settings.uiRotation);
 105
 106     Settings.bDoBlending      = QueryDWORD(hKey, _T("DoBlending"),      Settings.bDoBlending);
 107     Settings.bFinePerspective = QueryDWORD(hKey, _T("FinePerspective"), Settings.bFinePerspective);
 108     Settings.bEnableFiltering = QueryDWORD(hKey, _T("EnableFiltering"), Settings.bEnableFiltering);
 109     Settings.bSmoothShading   = QueryDWORD(hKey, _T("SmoothShading"),   Settings.bSmoothShading);
 110
 111     // Check the number of stars to be in range
 112     if (Settings.uiNumStars < MIN_STARS)
 113         Settings.uiNumStars = MIN_STARS;
 114     else
 115     if (Settings.uiNumStars > MAX_STARS)
 116         Settings.uiNumStars = MAX_STARS;
 117
 118     // Check the speed to be in range
 119     if (Settings.uiSpeed < MIN_SPEED)
 120         Settings.uiSpeed = MIN_SPEED;
 121     else
 122     if (Settings.uiSpeed > MAX_SPEED)
 123         Settings.uiSpeed = MAX_SPEED;
 124
 125     // Check type of rotation to be in range
 126     if (Settings.uiRotation != ROTATION_NONE &&
 127         Settings.uiRotation != ROTATION_LINEAR &&
 128         Settings.uiRotation != ROTATION_PERIODIC)
 129         Settings.uiRotation = ROTATION_PERIODIC;
 130
 131     RegCloseKey(hKey);
 132 }
 133
 134 void SaveSettings(void)
 135 {
 136     HKEY  hKey;
 137     LONG  lRes;
 138
 139     lRes = RegCreateKeyEx(
 140             HKEY_CURRENT_USER,
 141             _T("Software\\Microsoft\\ScreenSavers\\Ssstars"),
 142             0,
 143             _T(""),
 144             0,
 145             KEY_WRITE,
 146             NULL,
 147             &hKey,
 148             NULL);
 149
 150     if (lRes != ERROR_SUCCESS)
 151         return;
 152
 153     SaveDWORD(hKey, _T("NumberOfStars"),  Settings.uiNumStars);
 154     SaveDWORD(hKey, _T("Speed"),          Settings.uiSpeed);
 155     SaveDWORD(hKey, _T("TypeOfRotation"), Settings.uiRotation);
 156
 157     SaveDWORD(hKey, _T("DoBlending"),      Settings.bDoBlending);
 158     SaveDWORD(hKey, _T("FinePerspective"), Settings.bFinePerspective);
 159     SaveDWORD(hKey, _T("EnableFiltering"), Settings.bEnableFiltering);
 160     SaveDWORD(hKey, _T("SmoothShading"),   Settings.bSmoothShading);
 161
 162     RegCloseKey(hKey);
 163 }
 164
 165 static void SetupControls(HWND hWnd)
 166 {
 167     TCHAR     Strings[256];
 168     HINSTANCE hInstance;
 169     UINT      x, gap;
 170     LOGFONT   lf;
 171     HFONT     hFont;
 172     HBITMAP   hCosmos;
 173     HDC       hDC, hMemDC;
 174     HGDIOBJ   hOldBmp, hOldFnt;
 175     SIZE      sizeReactOS;
 176     SIZE      sizeStarfield;
 177     BITMAP    bm;
 178
 179     hInstance = (HINSTANCE)GetWindowLong(hWnd, GWL_HINSTANCE);
 180
 181     SendDlgItemMessage(hWnd, IDC_SLIDER_NUM_OF_STARS, TBM_SETRANGE, FALSE, MAKELPARAM(MIN_STARS, MAX_STARS));
 182
 183     SendDlgItemMessage(hWnd, IDC_SLIDER_SPEED, TBM_SETRANGE, FALSE, MAKELPARAM(1, 100));
 184
 185     for (x = 0; x < ROTATION_ITEMS; x++)
 186     {
 187         LoadString(hInstance, RotoStrings[x], Strings, sizeof(Strings)/sizeof(TCHAR));
 188         SendDlgItemMessage(hWnd, IDC_COMBO_ROTATION, CB_ADDSTRING, 0, (LPARAM)Strings);
 189     }
 190
 191     hCosmos = LoadImage(hInstance, MAKEINTRESOURCE(IDB_COSMOS), IMAGE_BITMAP, 0, 0, LR_CREATEDIBSECTION | LR_DEFAULTSIZE);
 192
 193     hDC = GetDC(hWnd);
 194     hMemDC = CreateCompatibleDC(hDC);
 195
 196     // Create the font for the title
 197     ZeroMemory(&lf, sizeof(lf));
 198
 199     lf.lfWeight  = FW_THIN;
 200     lf.lfCharSet = ANSI_CHARSET;
 201     lf.lfQuality = PROOF_QUALITY;
 202     lf.lfHeight  = 36;
 203     _tcscpy(lf.lfFaceName, _T("Tahoma"));
 204
 205     hFont = CreateFontIndirect(&lf);
 206
 207     hOldBmp = SelectObject(hMemDC, hCosmos);
 208     hOldFnt = SelectObject(hMemDC, hFont);
 209
 210     SetBkMode(hMemDC, TRANSPARENT);
 211     SetTextColor(hMemDC, RGB(0xFF, 0xFF, 0xFF));
 212
 213     x = LoadString(hInstance, IDS_DESCRIPTION, Strings, sizeof(Strings)/sizeof(TCHAR));
 214
 215     GetTextExtentPoint32(hMemDC, _T("ReactOS"), 7, &sizeReactOS);
 216     GetTextExtentPoint32(hMemDC, Strings,       x, &sizeStarfield);
 217
 218     GetObject(hCosmos, sizeof(BITMAP), &bm);
 219
 220     gap = bm.bmHeight - sizeReactOS.cy - sizeStarfield.cy;
 221
 222     TextOut(hMemDC, 16, gap * 2 / 5, _T("ReactOS"), 7);
 223     TextOut(hMemDC, 16, gap * 3 / 5 + sizeReactOS.cy, Strings, x);
 224
 225     SelectObject(hMemDC, hOldBmp);
 226     SelectObject(hMemDC, hOldFnt);
 227
 228     DeleteObject(hFont);
 229
 230     DeleteDC(hMemDC);
 231     ReleaseDC(hWnd, hDC);
 232
 233     SendDlgItemMessage(hWnd, IDC_IMAGE_COSMOS, STM_SETIMAGE, IMAGE_BITMAP, (LPARAM)hCosmos);
 234 }
 235
 236 static void ApplySettings(HWND hWnd)
 237 {
 238     SendDlgItemMessage(hWnd, IDC_SLIDER_NUM_OF_STARS, TBM_SETPOS, TRUE, Settings.uiNumStars);
 239     SetDlgItemInt(hWnd, IDC_TEXT_NUM_OF_STARS, Settings.uiNumStars, FALSE);
 240
 241     SendDlgItemMessage(hWnd, IDC_SLIDER_SPEED, TBM_SETPOS, TRUE, Settings.uiSpeed);
 242     SetDlgItemInt(hWnd, IDC_TEXT_SPEED, Settings.uiSpeed, FALSE);
 243
 244     SendDlgItemMessage(hWnd, IDC_COMBO_ROTATION, CB_SETCURSEL, (WPARAM)Settings.uiRotation, 0);
 245
 246     SendDlgItemMessage(hWnd, IDC_CHECK_DOBLENDING,  BM_SETCHECK, (WPARAM)Settings.bDoBlending, 0);
 247     SendDlgItemMessage(hWnd, IDC_CHECK_PERSPECTIVE, BM_SETCHECK, (WPARAM)Settings.bFinePerspective, 0);
 248     SendDlgItemMessage(hWnd, IDC_CHECK_FILTERING,   BM_SETCHECK, (WPARAM)Settings.bEnableFiltering, 0);
 249     SendDlgItemMessage(hWnd, IDC_CHECK_SHADING,     BM_SETCHECK, (WPARAM)Settings.bSmoothShading, 0);
 250 }
 251
 252 static void ReadSettings(HWND hWnd)
 253 {
 254     Settings.uiNumStars = SendDlgItemMessage(hWnd, IDC_SLIDER_NUM_OF_STARS, TBM_GETPOS, 0, 0);
 255     SetDlgItemInt(hWnd, IDC_TEXT_NUM_OF_STARS, Settings.uiNumStars, FALSE);
 256
 257     Settings.uiSpeed = SendDlgItemMessage(hWnd, IDC_SLIDER_SPEED, TBM_GETPOS, 0, 0);
 258     SetDlgItemInt(hWnd, IDC_TEXT_SPEED, Settings.uiSpeed, FALSE);
 259
 260     Settings.uiRotation = SendDlgItemMessage(hWnd, IDC_COMBO_ROTATION, CB_GETCURSEL, 0, 0);
 261
 262     Settings.bDoBlending      = SendDlgItemMessage(hWnd, IDC_CHECK_DOBLENDING,  BM_GETCHECK, 0, 0);
 263     Settings.bFinePerspective = SendDlgItemMessage(hWnd, IDC_CHECK_PERSPECTIVE, BM_GETCHECK, 0, 0);
 264     Settings.bEnableFiltering = SendDlgItemMessage(hWnd, IDC_CHECK_FILTERING,   BM_GETCHECK, 0, 0);
 265     Settings.bSmoothShading   = SendDlgItemMessage(hWnd, IDC_CHECK_SHADING,     BM_GETCHECK, 0, 0);
 266 }
 267
 268 static BOOL OnCommandAbout(HWND hWnd)
 269 {
 270     HINSTANCE hInstance;
 271     HICON     hIcon;
 272     TCHAR     szAppName[256];
 273     TCHAR     szAuthor[256];
 274     TCHAR     szLicense[1024];
 275
 276     hInstance = (HINSTANCE)GetWindowLong(hWnd, GWL_HINSTANCE);
 277
 278     hIcon = LoadIcon(hInstance, MAKEINTRESOURCE(IDI_STARFIELD));
 279
 280     LoadString(hInstance, IDS_DESCRIPTION, szAppName, SIZEOF(szAppName));
 281     LoadString(hInstance, IDS_AUTHOR,      szAuthor,  SIZEOF(szAuthor));
 282     LoadString(hInstance, IDS_LICENSE,     szLicense, SIZEOF(szLicense));
 283
 284     _tcscat(szAppName, _T("#"));
 285     _tcscat(szAppName, szAuthor);
 286
 287     ShellAbout(hWnd, szAppName, szLicense, hIcon);
 288
 289     return TRUE;
 290 }
 291
 292 //
 293 // Dialogbox procedure for Configuration window
 294 //
 295 BOOL CALLBACK ScreenSaverConfigureDialog(HWND hDlg, UINT uMsg, WPARAM wParam, LPARAM lParam)
 296 {
 297     switch (uMsg) {
 298     case WM_INITDIALOG:
 299         LoadSettings();
 300         SetupControls(hDlg);
 301         ApplySettings(hDlg);
 302         return TRUE;
 303
 304     case WM_COMMAND:
 305         switch (LOWORD( wParam )) {
 306
 307         case IDOK:
 308             // Write configuration
 309             SaveSettings();
 310
 311             // Fall down...
 312         case IDCANCEL:
 313             EndDialog( hDlg, LOWORD( wParam ));
 314             return TRUE;
 315
 316         case IDC_BUTTON_ABOUT:
 317             return OnCommandAbout(hDlg);
 318         }
 319
 320     case WM_HSCROLL:
 321         ReadSettings(hDlg);
 322         return TRUE;
 323
 324     }
 325
 326     return FALSE;
 327 }
 328
 329 BOOL WINAPI RegisterDialogClasses(HANDLE hInst)
 330 {
 331     InitCommonControls();
 332
 333     return TRUE;
 334 }
 335