File indexing completed on 2025-01-05 03:53:17

 /* ============================================================
  *
  * This file is a part of digiKam project
  * https://www.digikam.org
  *
  * Date        : 2019-04-02
  * Description : plugin to export image as wallpaper - Windows version.
  *
  * SPDX-FileCopyrightText: 2019      by Igor Antropov <antropovi at yahoo dot com>
  * SPDX-FileCopyrightText: 2019-2024 by Gilles Caulier <caulier dot gilles at gmail dot com>
  *
  * SPDX-License-Identifier: GPL-2.0-or-later
  *
  * ============================================================ */
 
 #include "wallpaperplugin.h"
 
 // Qt includes
 
 #include <QMessageBox>
 #include <QProcess>
 #include <QDir>
 
 // KDE includes
 
 #include <klocalizedstring.h>
 
 // Local includes
 
 #include "digikam_debug.h"
 
 // Windows includes
 
 #ifdef Q_OS_WIN
 #   include <windows.h>
 #   include <wininet.h>
 #   include <shlobj.h>
 #endif
 
 namespace DigikamGenericWallpaperPlugin
 {
 
 bool s_checkErrorCode(HRESULT status, const QString& path, const QString& context)
 {
     if (FAILED(status))
     {
         // Code to catch error string from error code with Windows API.
 
         LPWSTR bufPtr        = nullptr;
         DWORD werr           = GetLastError();
         FormatMessageW(FORMAT_MESSAGE_ALLOCATE_BUFFER |
                        FORMAT_MESSAGE_FROM_SYSTEM     |
                        FORMAT_MESSAGE_IGNORE_INSERTS,
                        nullptr,
                         werr,
                        0,
                        (LPWSTR)&bufPtr,
                        0,
                        nullptr);
 
         // cppcheck-suppress knownConditionTrueFalse
         QString errStr = (bufPtr) ? QString::fromUtf16((const ushort*)bufPtr).trimmed()
                                   : i18n("Unknown Error %1", werr);
         LocalFree(bufPtr);
 
         QMessageBox::warning(nullptr,
                              i18nc("@title:window",
                                    "Error While to Set Image as Wallpaper"),
                              i18n("Cannot change wallpaper image from current desktop with\n"
                                   "%1\n\nContext: %2\n\nError: %3",
                                   path,
                                   context,
                                   errStr));
 
         return false;
     }
 
     return true;
 }
 
 bool WallpaperPlugin::setWallpaper(const QString& path, int layout) const
 {
     // NOTE: IDesktopWallpaper is only defined with Windows >= 8.
     //       To be compatible with Windows 7, we needs to use IActiveDesktop instead.
 
     CoInitializeEx(0, COINIT_APARTMENTTHREADED);
 
     IActiveDesktop* iADesktop = nullptr;
     HRESULT status            = CoCreateInstance(CLSID_ActiveDesktop,
                                                  nullptr,
                                                  CLSCTX_INPROC_SERVER,
                                                  IID_IActiveDesktop,
                                                  (void**)&iADesktop);
 
     if (!s_checkErrorCode(status, path, i18n("Cannot create desktop context.")))
     {
         CoUninitialize();
 
         return false;
     }
 
     WALLPAPEROPT wOption;
     ZeroMemory(&wOption, sizeof(WALLPAPEROPT));
     wOption.dwSize            = sizeof(WALLPAPEROPT);
 
     switch (layout)
     {
         case Mosaic:
         {
             wOption.dwStyle = WPSTYLE_TILE;
             break;
         }
 
         case Centered:
         {
             wOption.dwStyle = WPSTYLE_CENTER;
             break;
         }
 
         default:    // *Adjusted*
         {
             wOption.dwStyle = WPSTYLE_STRETCH;
             break;
         }
     }
 
     status = iADesktop->SetWallpaper((PCWSTR)QDir::toNativeSeparators(path).utf16(), 0);
 
     if (!s_checkErrorCode(status, path, i18n("Cannot set wall paper image path.")))
     {
         iADesktop->Release();
         CoUninitialize();
 
         return false;
     }
 
     status = iADesktop->SetWallpaperOptions(&wOption, 0);
 
     if (!s_checkErrorCode(status, path, i18n("Cannot set wallpaper properties.")))
     {
         iADesktop->Release();
         CoUninitialize();
 
         return false;
     }
 
     status = iADesktop->ApplyChanges(AD_APPLY_ALL);
 
     if (!s_checkErrorCode(status, path, i18n("Cannot apply changes to desktop wallpaper.")))
     {
         iADesktop->Release();
         CoUninitialize();
 
         return false;
     }
 
     iADesktop->Release();
     CoUninitialize();
 
     return true;
 }
 
 } // namespace DigikamGenericWallpaperPlugin