mirror of
https://github.com/TigerVNC/tigervnc.git
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![Constantin Kaplinsky](/assets/img/avatar_default.png)
git-svn-id: svn://svn.code.sf.net/p/tigervnc/code/trunk@2 3789f03b-4d11-0410-bbf8-ca57d06f2519
256 lines
7.3 KiB
C++
256 lines
7.3 KiB
C++
/* Copyright (C) 2002-2004 RealVNC Ltd. All Rights Reserved.
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*
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* This is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This software is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this software; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307,
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* USA.
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*/
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// -=- CleanDesktop.cxx
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#define WIN32_LEAN_AND_MEAN
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#include <windows.h>
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#include <wininet.h>
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#include <shlobj.h>
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#include <rfb_win32/CleanDesktop.h>
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#include <rfb_win32/CurrentUser.h>
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#include <rfb_win32/Registry.h>
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#include <rfb/LogWriter.h>
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#include <rdr/Exception.h>
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using namespace rfb;
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using namespace rfb::win32;
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static LogWriter vlog("CleanDesktop");
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struct ActiveDesktop {
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ActiveDesktop() : handle(0) {
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// - Contact Active Desktop
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HRESULT result = CoCreateInstance(CLSID_ActiveDesktop, NULL, CLSCTX_INPROC_SERVER,
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IID_IActiveDesktop, (PVOID*)&handle);
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if (result != S_OK)
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throw rdr::SystemException("failed to contact Active Desktop", result);
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}
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~ActiveDesktop() {
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if (handle)
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handle->Release();
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}
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bool enable(bool enable_) {
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// - Get the current Active Desktop options
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COMPONENTSOPT adOptions;
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memset(&adOptions, 0, sizeof(adOptions));
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adOptions.dwSize = sizeof(adOptions);
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HRESULT result = handle->GetDesktopItemOptions(&adOptions, 0);
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if (result != S_OK) {
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vlog.error("failed to get Active Desktop options: %d", result);
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return false;
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}
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// - If Active Desktop is active, disable it
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if ((adOptions.fActiveDesktop==0) != (enable_==0)) {
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if (enable_)
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vlog.debug("enabling Active Desktop");
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else
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vlog.debug("disabling Active Desktop");
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adOptions.fActiveDesktop = enable_;
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result = handle->SetDesktopItemOptions(&adOptions, 0);
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if (result != S_OK) {
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vlog.error("failed to disable ActiveDesktop: %d", result);
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return false;
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}
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handle->ApplyChanges(AD_APPLY_REFRESH);
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return true;
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}
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return false;
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}
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IActiveDesktop* handle;
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};
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DWORD SysParamsInfo(UINT action, UINT param, PVOID ptr, UINT ini) {
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DWORD r = ERROR_SUCCESS;
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if (!SystemParametersInfo(action, param, ptr, ini)) {
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r = GetLastError();
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vlog.info("SPI error: %d", r);
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}
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return r;
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}
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CleanDesktop::CleanDesktop() : restoreActiveDesktop(false), restoreWallpaper(false), restoreEffects(false) {
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CoInitialize(0);
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}
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CleanDesktop::~CleanDesktop() {
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enableEffects();
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enablePattern();
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enableWallpaper();
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CoUninitialize();
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}
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void CleanDesktop::disableWallpaper() {
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try {
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ImpersonateCurrentUser icu;
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vlog.debug("disable desktop wallpaper/Active Desktop");
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// -=- First attempt to remove the wallpaper using Active Desktop
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try {
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ActiveDesktop ad;
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if (ad.enable(false))
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restoreActiveDesktop = true;
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} catch (rdr::Exception& e) {
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vlog.error(e.str());
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}
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// -=- Switch of normal wallpaper and notify apps
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SysParamsInfo(SPI_SETDESKWALLPAPER, 0, "", SPIF_SENDCHANGE);
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restoreWallpaper = true;
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} catch (rdr::Exception& e) {
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vlog.info(e.str());
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}
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}
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void CleanDesktop::enableWallpaper() {
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try {
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ImpersonateCurrentUser icu;
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if (restoreActiveDesktop) {
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vlog.debug("restore Active Desktop");
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// -=- First attempt to re-enable Active Desktop
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try {
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ActiveDesktop ad;
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ad.enable(true);
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restoreActiveDesktop = false;
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} catch (rdr::Exception& e) {
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vlog.error(e.str());
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}
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}
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if (restoreWallpaper) {
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vlog.debug("restore desktop wallpaper");
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// -=- Then restore the standard wallpaper if required
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SysParamsInfo(SPI_SETDESKWALLPAPER, 0, NULL, SPIF_SENDCHANGE);
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restoreWallpaper = false;
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}
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} catch (rdr::Exception& e) {
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vlog.info(e.str());
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}
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}
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void CleanDesktop::disablePattern() {
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try {
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ImpersonateCurrentUser icu;
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vlog.debug("disable desktop pattern");
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SysParamsInfo(SPI_SETDESKPATTERN, 0, "", SPIF_SENDCHANGE);
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restorePattern = true;
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} catch (rdr::Exception& e) {
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vlog.info(e.str());
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}
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}
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void CleanDesktop::enablePattern() {
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try {
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if (restorePattern) {
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ImpersonateCurrentUser icu;
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vlog.debug("restoring pattern...");
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TCharArray pattern;
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if (osVersion.isPlatformWindows) {
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RegKey cfgKey;
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cfgKey.openKey(HKEY_CURRENT_USER, _T("Control Panel\\Desktop"));
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pattern.buf = cfgKey.getString(_T("Pattern"));
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}
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SysParamsInfo(SPI_SETDESKPATTERN, 0, pattern.buf, SPIF_SENDCHANGE);
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restorePattern = false;
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}
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} catch (rdr::Exception& e) {
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vlog.info(e.str());
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}
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}
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void CleanDesktop::disableEffects() {
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#if (WINVER >= 0x500)
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try {
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ImpersonateCurrentUser icu;
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vlog.debug("disable desktop effects");
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SysParamsInfo(SPI_SETFONTSMOOTHING, FALSE, 0, SPIF_SENDCHANGE);
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if (SysParamsInfo(SPI_GETUIEFFECTS, 0, &uiEffects, 0) == ERROR_CALL_NOT_IMPLEMENTED) {
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SysParamsInfo(SPI_GETCOMBOBOXANIMATION, 0, &comboBoxAnim, 0);
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SysParamsInfo(SPI_GETGRADIENTCAPTIONS, 0, &gradientCaptions, 0);
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SysParamsInfo(SPI_GETHOTTRACKING, 0, &hotTracking, 0);
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SysParamsInfo(SPI_GETLISTBOXSMOOTHSCROLLING, 0, &listBoxSmoothScroll, 0);
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SysParamsInfo(SPI_GETMENUANIMATION, 0, &menuAnim, 0);
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SysParamsInfo(SPI_SETCOMBOBOXANIMATION, 0, FALSE, SPIF_SENDCHANGE);
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SysParamsInfo(SPI_SETGRADIENTCAPTIONS, 0, FALSE, SPIF_SENDCHANGE);
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SysParamsInfo(SPI_SETHOTTRACKING, 0, FALSE, SPIF_SENDCHANGE);
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SysParamsInfo(SPI_SETLISTBOXSMOOTHSCROLLING, 0, FALSE, SPIF_SENDCHANGE);
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SysParamsInfo(SPI_SETMENUANIMATION, 0, FALSE, SPIF_SENDCHANGE);
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} else {
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SysParamsInfo(SPI_SETUIEFFECTS, 0, FALSE, SPIF_SENDCHANGE);
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}
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restoreEffects = true;
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} catch (rdr::Exception& e) {
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vlog.info(e.str());
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}
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#else
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vlog.info("disableffects not implemented");
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#endif
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}
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void CleanDesktop::enableEffects() {
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try {
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if (restoreEffects) {
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#if (WINVER >= 0x500)
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ImpersonateCurrentUser icu;
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vlog.debug("restore desktop effects");
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RegKey desktopCfg;
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desktopCfg.openKey(HKEY_CURRENT_USER, _T("Control Panel\\Desktop"));
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SysParamsInfo(SPI_SETFONTSMOOTHING, desktopCfg.getInt(_T("FontSmoothing"), 0) != 0, 0, SPIF_SENDCHANGE);
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if (SysParamsInfo(SPI_SETUIEFFECTS, 0, (void*)uiEffects, SPIF_SENDCHANGE) == ERROR_CALL_NOT_IMPLEMENTED) {
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SysParamsInfo(SPI_SETCOMBOBOXANIMATION, 0, (void*)comboBoxAnim, SPIF_SENDCHANGE);
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SysParamsInfo(SPI_SETGRADIENTCAPTIONS, 0, (void*)gradientCaptions, SPIF_SENDCHANGE);
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SysParamsInfo(SPI_SETHOTTRACKING, 0, (void*)hotTracking, SPIF_SENDCHANGE);
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SysParamsInfo(SPI_SETLISTBOXSMOOTHSCROLLING, 0, (void*)listBoxSmoothScroll, SPIF_SENDCHANGE);
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SysParamsInfo(SPI_SETMENUANIMATION, 0, (void*)menuAnim, SPIF_SENDCHANGE);
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}
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restoreEffects = false;
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#else
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vlog.info("enableEffects not implemented");
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#endif
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}
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} catch (rdr::Exception& e) {
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vlog.info(e.str());
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}
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}
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