src/gui/uithememanager.h

   1 /*
   2  * Bittorrent Client using Qt and libtorrent.
   3  * Copyright (C) 2023-2024  Vladimir Golovnev <glassez@yandex.ru>
   4  * Copyright (C) 2019  Prince Gupta <jagannatharjun11@gmail.com>
   5  *
   6  * This program is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU General Public License
   8  * as published by the Free Software Foundation; either version 2
   9  * of the License, or (at your option) any later version.
  10  *
  11  * This program is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  * GNU General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU General Public License
  17  * along with this program; if not, write to the Free Software
  18  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301,
  19  * USA.
  20  *
  21  * In addition, as a special exception, the copyright holders give permission to
  22  * link this program with the OpenSSL project's "OpenSSL" library (or with
  23  * modified versions of it that use the same license as the "OpenSSL" library),
  24  * and distribute the linked executables. You must obey the GNU General Public
  25  * License in all respects for all of the code used other than "OpenSSL".  If
  26  * you modify file(s), you may extend this exception to your version of the
  27  * file(s), but you are not obligated to do so. If you do not wish to do so,
  28  * delete this exception statement from your version.
  29  */
  30
  31 #pragma once
  32
  33 #include <QtSystemDetection>
  34 #include <QtVersionChecks>
  35 #include <QColor>
  36 #include <QHash>
  37 #include <QIcon>
  38 #include <QObject>
  39 #include <QPixmap>
  40 #include <QString>
  41
  42 #include "uithemesource.h"
  43
  44 #if (QT_VERSION >= QT_VERSION_CHECK(6, 8, 0)) && defined(Q_OS_WIN)
  45 #define QBT_HAS_COLORSCHEME_OPTION
  46 #endif
  47
  48 #ifdef QBT_HAS_COLORSCHEME_OPTION
  49 #include "base/settingvalue.h"
  50 #include "colorscheme.h"
  51 #endif
  52
  53 class UIThemeManager final : public QObject
  54 {
  55     Q_OBJECT
  56     Q_DISABLE_COPY_MOVE(UIThemeManager)
  57
  58 public:
  59     static void initInstance();
  60     static void freeInstance();
  61     static UIThemeManager *instance();
  62
  63 #ifdef QBT_HAS_COLORSCHEME_OPTION
  64     ColorScheme colorScheme() const;
  65     void setColorScheme(ColorScheme value);
  66 #endif
  67
  68     QIcon getIcon(const QString &iconId, const QString &fallback = {}) const;
  69     QIcon getFlagIcon(const QString &countryIsoCode) const;
  70     QPixmap getScaledPixmap(const QString &iconId, int height) const;
  71
  72     QColor getColor(const QString &id) const;
  73
  74 signals:
  75     void themeChanged();
  76
  77 private:
  78     UIThemeManager(); // singleton class
  79
  80     void applyPalette() const;
  81     void applyStyleSheet() const;
  82     void onColorSchemeChanged();
  83
  84 #ifdef QBT_HAS_COLORSCHEME_OPTION
  85     void applyColorScheme() const;
  86 #endif
  87
  88     static UIThemeManager *m_instance;
  89     const bool m_useCustomTheme;
  90 #ifdef QBT_HAS_COLORSCHEME_OPTION
  91     SettingValue<ColorScheme> m_colorSchemeSetting;
  92 #endif
  93 #if (defined(Q_OS_UNIX) && !defined(Q_OS_MACOS))
  94     const bool m_useSystemIcons;
  95 #endif
  96     std::unique_ptr<UIThemeSource> m_themeSource;
  97     mutable QHash<QString, QIcon> m_icons;
  98     mutable QHash<QString, QIcon> m_darkModeIcons;
  99     mutable QHash<QString, QIcon> m_flags;
 100 };