File indexing completed on 2025-01-05 04:55:53

 /* -*- mode: c++; c-basic-offset:4 -*-
     utils/systeminfo.cpp
 
     This file is part of libkleopatra
     SPDX-FileCopyrightText: 2022 g10 Code GmbH
     SPDX-FileContributor: Ingo Klöcker <dev@ingo-kloecker.de>
 
     SPDX-License-Identifier: GPL-2.0-or-later
 */
 
 #include <config-libkleo.h>
 
 #include "systeminfo.h"
 
 #include <QByteArray>
 #include <QtSystemDetection>
 
 // #include "libkleo_debug.h"
 #ifdef Q_OS_WIN
 #include "windows.h"
 // #include "gnupg-registry.h"
 #endif
 
 #ifdef Q_OS_WIN
 namespace
 {
 bool win_isHighContrastModeActive()
 {
     HIGHCONTRAST result;
     result.cbSize = sizeof(HIGHCONTRAST);
     if (SystemParametersInfo(SPI_GETHIGHCONTRAST, result.cbSize, &result, 0)) {
         return (result.dwFlags & HCF_HIGHCONTRASTON);
     }
     return false;
 }
 
 bool win_isDarkModeActive()
 {
     /* This is a bit complicated. Qt does not detect this correctly
      * for high contrast mode with white contrast. */
 
     // First check for white background. That is set in High contrast
     // white theme.
     DWORD color = GetSysColor(COLOR_WINDOW);
     if (color == 0xFFFFFF) {
         return false;
     }
     // Windows 10 has only one white High Contrast mode. The other
     // three are dark.
     if (win_isHighContrastModeActive()) {
         return true;
     }
 
 #if 0
     // This is not enabled because although Qt does check for this, the theme
     // does not switch accordingly in tests. So we would have white icons on a
     // bright window.
     //
     // The user may have customized a dark theme. Then AppsUseLightTheme is 0
     char *val = read_w32_registry_string ("HKEY_CURRENT_USER",
                    "Software\\Microsoft\\Windows\\CurrentVersion\\Themes\\Personalize",
                    "AppsUseLightTheme");
     bool ret = false;
     if (val) {
         ret = !((DWORD) *val);
         free (val);
         return ret;
     }
 #endif
     // Nothing set -> default to bright.
     return false;
 }
 }
 #endif
 
 bool Kleo::SystemInfo::isHighContrastModeActive()
 {
     static bool forceHighContrastMode = qgetenv("KLEO_HIGH_CONTRAST_MODE").toInt();
 #ifdef Q_OS_WIN
     static bool highContrastModeActive = forceHighContrastMode || win_isHighContrastModeActive();
     return highContrastModeActive;
 #else
     return forceHighContrastMode;
 #endif
 }
 
 bool Kleo::SystemInfo::isDarkModeActive()
 {
 #ifdef Q_OS_WIN
     return win_isDarkModeActive();
 #else
     // Don't know
     return isHighContrastModeActive();
 #endif
 }