Initial revision

git-svn-id: svn://svn.code.sf.net/p/tigervnc/code/trunk@2 3789f03b-4d11-0410-bbf8-ca57d06f2519

1 files changed, 255 insertions, 0 deletions

diff --git a/rfb_win32/CleanDesktop.cxx b/rfb_win32/CleanDesktop.cxx
new file mode 100644
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--- /dev/null
+++ b/rfb_win32/CleanDesktop.cxx
@@ -0,0 +1,255 @@
+/* Copyright (C) 2002-2004 RealVNC Ltd.  All Rights Reserved.
+ *    
+ * This is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU 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 General Public License for more details.
+ * 
+ * You should have received a copy of the GNU General Public License
+ * along with this software; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307,
+ * USA.
+ */
+
+// -=- CleanDesktop.cxx
+
+#define WIN32_LEAN_AND_MEAN
+#include <windows.h>
+#include <wininet.h>
+#include <shlobj.h>
+
+#include <rfb_win32/CleanDesktop.h>
+#include <rfb_win32/CurrentUser.h>
+#include <rfb_win32/Registry.h>
+#include <rfb/LogWriter.h>
+#include <rdr/Exception.h>
+
+using namespace rfb;
+using namespace rfb::win32;
+
+static LogWriter vlog("CleanDesktop");
+
+
+struct ActiveDesktop {
+  ActiveDesktop() : handle(0) {
+    // - Contact Active Desktop
+    HRESULT result = CoCreateInstance(CLSID_ActiveDesktop, NULL, CLSCTX_INPROC_SERVER,
+                                      IID_IActiveDesktop, (PVOID*)&handle);
+    if (result != S_OK)
+      throw rdr::SystemException("failed to contact Active Desktop", result);
+  }
+  ~ActiveDesktop() {
+    if (handle)
+      handle->Release();
+  }
+  bool enable(bool enable_) {
+    // - Get the current Active Desktop options
+    COMPONENTSOPT adOptions;
+    memset(&adOptions, 0, sizeof(adOptions));
+    adOptions.dwSize = sizeof(adOptions);
+
+    HRESULT result = handle->GetDesktopItemOptions(&adOptions, 0);
+    if (result != S_OK) {
+      vlog.error("failed to get Active Desktop options: %d", result);
+      return false;
+    }
+
+    // - If Active Desktop is active, disable it
+    if ((adOptions.fActiveDesktop==0) != (enable_==0)) {
+      if (enable_)
+        vlog.debug("enabling Active Desktop");
+      else
+        vlog.debug("disabling Active Desktop");
+
+      adOptions.fActiveDesktop = enable_;
+      result = handle->SetDesktopItemOptions(&adOptions, 0);
+      if (result != S_OK) {
+        vlog.error("failed to disable ActiveDesktop: %d", result);
+        return false;
+      }
+      handle->ApplyChanges(AD_APPLY_REFRESH);
+      return true;
+    }
+    return false;
+  }
+  IActiveDesktop* handle;
+};
+
+
+DWORD SysParamsInfo(UINT action, UINT param, PVOID ptr, UINT ini) {
+  DWORD r = ERROR_SUCCESS;
+  if (!SystemParametersInfo(action, param, ptr, ini)) {
+    r = GetLastError();
+    vlog.info("SPI error: %d", r);
+  }
+  return r;
+}
+
+
+CleanDesktop::CleanDesktop() : restoreActiveDesktop(false), restoreWallpaper(false), restoreEffects(false) {
+  CoInitialize(0);
+}
+
+CleanDesktop::~CleanDesktop() {
+  enableEffects();
+  enablePattern();
+  enableWallpaper();
+  CoUninitialize();
+}
+
+void CleanDesktop::disableWallpaper() {
+  try {
+    ImpersonateCurrentUser icu;
+
+    vlog.debug("disable desktop wallpaper/Active Desktop");
+
+    // -=- First attempt to remove the wallpaper using Active Desktop
+    try {
+      ActiveDesktop ad;
+      if (ad.enable(false))
+        restoreActiveDesktop = true;
+    } catch (rdr::Exception& e) {
+      vlog.error(e.str());
+    }
+
+    // -=- Switch of normal wallpaper and notify apps
+    SysParamsInfo(SPI_SETDESKWALLPAPER, 0, "", SPIF_SENDCHANGE);
+    restoreWallpaper = true;
+
+  } catch (rdr::Exception& e) {
+    vlog.info(e.str());
+  }
+}
+
+void CleanDesktop::enableWallpaper() {
+  try {
+    ImpersonateCurrentUser icu;
+
+    if (restoreActiveDesktop) {
+      vlog.debug("restore Active Desktop");
+
+      // -=- First attempt to re-enable Active Desktop
+      try {
+        ActiveDesktop ad;
+        ad.enable(true);
+        restoreActiveDesktop = false;
+      } catch (rdr::Exception& e) {
+        vlog.error(e.str());
+      }
+    }
+
+    if (restoreWallpaper) {
+      vlog.debug("restore desktop wallpaper");
+
+      // -=- Then restore the standard wallpaper if required
+	    SysParamsInfo(SPI_SETDESKWALLPAPER, 0, NULL, SPIF_SENDCHANGE);
+      restoreWallpaper = false;
+    }
+
+  } catch (rdr::Exception& e) {
+    vlog.info(e.str());
+  }
+}
+
+
+void CleanDesktop::disablePattern() {
+  try {
+    ImpersonateCurrentUser icu;
+
+    vlog.debug("disable desktop pattern");
+    SysParamsInfo(SPI_SETDESKPATTERN, 0, "", SPIF_SENDCHANGE);
+    restorePattern = true;
+
+  } catch (rdr::Exception& e) {
+    vlog.info(e.str());
+  }
+}
+
+void CleanDesktop::enablePattern() {
+  try {
+    if (restorePattern) {
+      ImpersonateCurrentUser icu;
+
+      vlog.debug("restoring pattern...");
+
+      TCharArray pattern;
+      if (osVersion.isPlatformWindows) {
+        RegKey cfgKey;
+        cfgKey.openKey(HKEY_CURRENT_USER, _T("Control Panel\\Desktop"));
+        pattern.buf = cfgKey.getString(_T("Pattern"));
+      }
+      SysParamsInfo(SPI_SETDESKPATTERN, 0, pattern.buf, SPIF_SENDCHANGE);
+      restorePattern = false;
+    }
+
+  } catch (rdr::Exception& e) {
+    vlog.info(e.str());
+  }
+}
+
+
+void CleanDesktop::disableEffects() {
+#if (WINVER >= 0x500)
+  try {
+    ImpersonateCurrentUser icu;
+
+    vlog.debug("disable desktop effects");
+
+    SysParamsInfo(SPI_SETFONTSMOOTHING, FALSE, 0, SPIF_SENDCHANGE);
+    if (SysParamsInfo(SPI_GETUIEFFECTS, 0, &uiEffects, 0) == ERROR_CALL_NOT_IMPLEMENTED) {
+      SysParamsInfo(SPI_GETCOMBOBOXANIMATION, 0, &comboBoxAnim, 0);
+      SysParamsInfo(SPI_GETGRADIENTCAPTIONS, 0, &gradientCaptions, 0);
+      SysParamsInfo(SPI_GETHOTTRACKING, 0, &hotTracking, 0);
+      SysParamsInfo(SPI_GETLISTBOXSMOOTHSCROLLING, 0, &listBoxSmoothScroll, 0);
+      SysParamsInfo(SPI_GETMENUANIMATION, 0, &menuAnim, 0);
+      SysParamsInfo(SPI_SETCOMBOBOXANIMATION, 0, FALSE, SPIF_SENDCHANGE);
+      SysParamsInfo(SPI_SETGRADIENTCAPTIONS, 0, FALSE, SPIF_SENDCHANGE);
+      SysParamsInfo(SPI_SETHOTTRACKING, 0, FALSE, SPIF_SENDCHANGE);
+      SysParamsInfo(SPI_SETLISTBOXSMOOTHSCROLLING, 0, FALSE, SPIF_SENDCHANGE);
+      SysParamsInfo(SPI_SETMENUANIMATION, 0, FALSE, SPIF_SENDCHANGE);
+    } else {
+      SysParamsInfo(SPI_SETUIEFFECTS, 0, FALSE, SPIF_SENDCHANGE);
+    }
+    restoreEffects = true;
+
+  } catch (rdr::Exception& e) {
+    vlog.info(e.str());
+  }
+#else
+      vlog.info("disableffects not implemented");
+#endif
+}
+
+void CleanDesktop::enableEffects() {
+  try {
+    if (restoreEffects) {
+#if (WINVER >= 0x500)
+      ImpersonateCurrentUser icu;
+
+      vlog.debug("restore desktop effects");
+
+      RegKey desktopCfg;
+      desktopCfg.openKey(HKEY_CURRENT_USER, _T("Control Panel\\Desktop"));
+      SysParamsInfo(SPI_SETFONTSMOOTHING, desktopCfg.getInt(_T("FontSmoothing"), 0) != 0, 0, SPIF_SENDCHANGE);
+      if (SysParamsInfo(SPI_SETUIEFFECTS, 0, (void*)uiEffects, SPIF_SENDCHANGE) == ERROR_CALL_NOT_IMPLEMENTED) {
+        SysParamsInfo(SPI_SETCOMBOBOXANIMATION, 0, (void*)comboBoxAnim, SPIF_SENDCHANGE);
+        SysParamsInfo(SPI_SETGRADIENTCAPTIONS, 0, (void*)gradientCaptions, SPIF_SENDCHANGE);
+        SysParamsInfo(SPI_SETHOTTRACKING, 0, (void*)hotTracking, SPIF_SENDCHANGE);
+        SysParamsInfo(SPI_SETLISTBOXSMOOTHSCROLLING, 0, (void*)listBoxSmoothScroll, SPIF_SENDCHANGE);
+        SysParamsInfo(SPI_SETMENUANIMATION, 0, (void*)menuAnim, SPIF_SENDCHANGE);
+      }
+      restoreEffects = false;
+#else
+      vlog.info("enableEffects not implemented");
+#endif
+    }
+
+  } catch (rdr::Exception& e) {
+    vlog.info(e.str());
+  }
+}