Initial revision
git-svn-id: svn://svn.code.sf.net/p/tigervnc/code/trunk@2 3789f03b-4d11-0410-bbf8-ca57d06f2519
diff --git a/rfb_win32/CleanDesktop.cxx b/rfb_win32/CleanDesktop.cxx
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+++ b/rfb_win32/CleanDesktop.cxx
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+/* 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());
+ }
+}