!241 chore: 优化 KDE 深色模式支持实现方式

* chore: 优化 KDE 深色模式支持实现方式

src/backend/ThemeChecker.cpp

@@ -1,44 +1,147 @@
 #include "ThemeChecker.h"
-#include <QTimer>
-#include <QProcess>
+
+#include <QDBusConnection>
 #include <QDebug>
 
-ThemeChecker::ThemeChecker(QObject *parent) : QObject(parent), lastColorSchema(-1) {
-    timer = new QTimer(this);
-    connect(timer, SIGNAL(timeout()), this, SLOT(checkThemeChange()));
-    timer->start(1000);
+Q_GLOBAL_STATIC(ThemeChecker, m_instance)
+
+constexpr char kFreedesktopPortalServiceName[] = "org.freedesktop.portal.Desktop";
+constexpr char kFreedesktopPortalServicePath[] = "/org/freedesktop/portal/desktop";
+constexpr char kFreedesktopPortalSettingsInterface[] = "org.freedesktop.portal.Settings";
+
+ThemeChecker::ThemeChecker(QObject *parent)
+    : QObject(parent)
+    , m_paletteType(Dtk::Gui::DGuiApplicationHelper::instance()->paletteType())
+{
+    m_interface = new QDBusInterface(kFreedesktopPortalServiceName,
+                                     kFreedesktopPortalServicePath,
+                                     kFreedesktopPortalSettingsInterface,
+                                     QDBusConnection::sessionBus(),
+                                     this);
+
+    initThemeType();
+    initConnections();
 }
 
-void ThemeChecker::checkThemeChange() {
+ThemeChecker *ThemeChecker::instance()
+{
+    return m_instance;
+}
 
-
-    QProcess process;
-    QStringList parameters;
-    parameters << "-c" << "dbus-send --session --print-reply=literal --reply-timeout=1000 --dest=org.freedesktop.portal.Desktop /org/freedesktop/portal/desktop org.freedesktop.portal.Settings.Read string:'org.freedesktop.appearance' string:'color-scheme'";
-    process.start("/bin/sh", parameters);
-
-    if (process.waitForFinished(-1)) {
-        QString errorOutput = QString(process.readAllStandardError()).trimmed();
-        if (!errorOutput.isEmpty()) {
-            qWarning() << "检测到DBus错误:" << errorOutput;
-            return;
-        }
-
-        QString output = QString(process.readAll()).trimmed();
-        int systemColorSchema = output.right(1).toInt();
-
-        if(systemColorSchema != lastColorSchema) {
-            lastColorSchema = systemColorSchema;
-            qDebug() << "主题已更改，新的主题是：" << systemColorSchema;
-            if(systemColorSchema == 1){
-                emit themeChanged(true);
-            }
-            else if(systemColorSchema == 0 || systemColorSchema == 2){
-                emit themeChanged(false);
-            }
-        }
+bool ThemeChecker::useDarkTheme()
+{
+    if (m_paletteType == Dtk::Gui::DGuiApplicationHelper::ColorType::UnknownType) {
+        return m_themeType == Dtk::Gui::DGuiApplicationHelper::ColorType::DarkType;
     } else {
-        qWarning() << "DBus调用未能完成";
+        return m_paletteType == Dtk::Gui::DGuiApplicationHelper::ColorType::DarkType;
     }
 }
 
+void ThemeChecker::initThemeType()
+{
+    QVariantList args { "org.freedesktop.appearance", "color-scheme" };
+    QDBusMessage msg = m_interface->callWithArgumentList(QDBus::Block, "Read", args);
+    if (msg.type() != QDBusMessage::MessageType::ReplyMessage || msg.arguments().size() < 1) {
+        qWarning().noquote() << "Init color-scheme from D-Bus failed:" << msg.errorName() << msg.errorMessage();
+        m_themeType = Dtk::Gui::DGuiApplicationHelper::toColorType(Dtk::Gui::DGuiApplicationHelper::fetchPalette(Dtk::Gui::DGuiApplicationHelper::instance()->applicationTheme()));
+        return;
+    }
+
+    quint32 colorScheme = qvariant_cast<QDBusVariant>(qvariant_cast<QDBusVariant>(msg.arguments().first()).variant()).variant().toUInt();
+    switch (colorScheme) {
+    case 1:
+        m_themeType = Dtk::Gui::DGuiApplicationHelper::ColorType::DarkType;
+        break;
+    case 2:
+        m_themeType = Dtk::Gui::DGuiApplicationHelper::ColorType::LightType;
+        break;
+    default:
+        qInfo().noquote() << QString("color-scheme: %1, fetching themeType according to QPalette::Window").arg(colorScheme);
+        m_themeType = Dtk::Gui::DGuiApplicationHelper::toColorType(Dtk::Gui::DGuiApplicationHelper::fetchPalette(Dtk::Gui::DGuiApplicationHelper::instance()->applicationTheme()));
+        break;
+    }
+
+    if (m_paletteType == Dtk::Gui::DGuiApplicationHelper::ColorType::UnknownType) {
+        Dtk::Gui::DGuiApplicationHelper::instance()->setApplicationPalette(Dtk::Gui::DGuiApplicationHelper::standardPalette(m_themeType));
+    }
+}
+
+void ThemeChecker::initConnections()
+{
+    QDBusConnection::sessionBus().connect(kFreedesktopPortalServiceName,
+                                          kFreedesktopPortalServicePath,
+                                          kFreedesktopPortalSettingsInterface,
+                                          "SettingChanged",
+                                          this,
+                                          SLOT(slotSettingChanged(const QString &, const QString &, const QDBusVariant &)));
+
+    connect(Dtk::Gui::DGuiApplicationHelper::instance()->applicationTheme(), &Dtk::Gui::DPlatformTheme::themeNameChanged, this, &ThemeChecker::slotThemeNameChanged);
+    connect(Dtk::Gui::DGuiApplicationHelper::instance(), &Dtk::Gui::DGuiApplicationHelper::paletteTypeChanged, this, &ThemeChecker::slotPaletteTypeChanged);
+}
+
+void ThemeChecker::slotSettingChanged(const QString &_namespace, const QString &key, const QDBusVariant &variant)
+{
+    if (_namespace != "org.freedesktop.appearance" || key != "color-scheme") {
+        return;
+    }
+
+    Dtk::Gui::DGuiApplicationHelper::ColorType colorType = Dtk::Gui::DGuiApplicationHelper::ColorType::UnknownType;
+
+    quint32 colorScheme = variant.variant().toUInt();
+    switch (colorScheme) {
+    case 1:
+        colorType = Dtk::Gui::DGuiApplicationHelper::ColorType::DarkType;
+        break;
+    case 2:
+        colorType = Dtk::Gui::DGuiApplicationHelper::ColorType::LightType;
+        break;
+    default:
+        qInfo().noquote() << QString("color-scheme: %1, fetching themeType according to QPalette::Window").arg(colorScheme);
+        colorType = Dtk::Gui::DGuiApplicationHelper::toColorType(Dtk::Gui::DGuiApplicationHelper::fetchPalette(Dtk::Gui::DGuiApplicationHelper::instance()->applicationTheme()));
+        break;
+    }
+
+    if (m_paletteType != Dtk::Gui::DGuiApplicationHelper::ColorType::UnknownType) {
+        m_themeType = colorType;
+        return;
+    }
+
+    if (m_themeType != colorType) {
+        Dtk::Gui::DGuiApplicationHelper::instance()->setApplicationPalette(Dtk::Gui::DGuiApplicationHelper::standardPalette(colorType));
+        emit themeChanged(colorType == Dtk::Gui::DGuiApplicationHelper::ColorType::DarkType);
+        m_themeType = colorType;
+    }
+}
+
+void ThemeChecker::slotThemeNameChanged(const QByteArray &theme)
+{
+    Dtk::Gui::DGuiApplicationHelper::ColorType themeType = Dtk::Gui::DGuiApplicationHelper::ColorType::LightType;
+    if (theme.endsWith("dark")) {
+        themeType = Dtk::Gui::DGuiApplicationHelper::ColorType::DarkType;
+    }
+
+    if (m_paletteType != Dtk::Gui::DGuiApplicationHelper::ColorType::UnknownType) {
+        m_themeType = themeType;
+        return;
+    }
+
+    if (m_themeType != themeType) {
+        Dtk::Gui::DGuiApplicationHelper::instance()->setApplicationPalette(Dtk::Gui::DGuiApplicationHelper::standardPalette(themeType));
+        emit themeChanged(themeType == Dtk::Gui::DGuiApplicationHelper::ColorType::DarkType);
+        m_themeType = themeType;
+    }
+}
+
+void ThemeChecker::slotPaletteTypeChanged(Dtk::Gui::DGuiApplicationHelper::ColorType paletteType)
+{
+    m_paletteType = paletteType;
+
+    if (m_paletteType != Dtk::Gui::DGuiApplicationHelper::ColorType::UnknownType) {
+        Dtk::Gui::DGuiApplicationHelper::instance()->setApplicationPalette(Dtk::Gui::DGuiApplicationHelper::standardPalette(m_paletteType));
+        emit themeChanged(m_paletteType == Dtk::Gui::DGuiApplicationHelper::ColorType::DarkType);
+        return;
+    }
+
+    Dtk::Gui::DGuiApplicationHelper::instance()->setApplicationPalette(Dtk::Gui::DGuiApplicationHelper::standardPalette(m_themeType));
+    emit themeChanged(m_themeType == Dtk::Gui::DGuiApplicationHelper::ColorType::DarkType);
+}

src/backend/ThemeChecker.h

@@ -2,25 +2,39 @@
 #define THEMECHECKER_H
 
 #include <QObject>
-#include <QTimer>
+#include <QDBusVariant>
+#include <QDBusInterface>
 
+#include <DPlatformTheme>
+#include <DGuiApplicationHelper>
 
 class ThemeChecker : public QObject
 {
     Q_OBJECT
+
 public:
     explicit ThemeChecker(QObject *parent = nullptr);
+    static ThemeChecker *instance();
+
+    bool useDarkTheme();
+
+private:
+    void initThemeType();
+    void initConnections();
 
 signals:
     void themeChanged(bool isDark);
 
-public slots:
-    void checkThemeChange();
-
+private slots:
+    void slotSettingChanged(const QString &_namespace, const QString &key, const QDBusVariant &variant);
+    void slotThemeNameChanged(const QByteArray &theme);
+    void slotPaletteTypeChanged(Dtk::Gui::DGuiApplicationHelper::ColorType paletteType);
 
 private:
-    int lastColorSchema;
-    QTimer *timer;
+    QDBusInterface *m_interface = nullptr;
+
+    Dtk::Gui::DGuiApplicationHelper::ColorType m_paletteType;
+    Dtk::Gui::DGuiApplicationHelper::ColorType m_themeType;
 };
 
 #endif // THEMECHECKER_H

src/mainwindow-dtk.cpp

@@ -41,8 +41,6 @@ MainWindow::MainWindow(QWidget *parent)
     initTmpDir();
 
     ui->appintopage->setDownloadWidget(downloadlistwidget);
-
-    emit DGuiApplicationHelper::instance()->themeTypeChanged(DGuiApplicationHelper::instance()->themeType());
 }
 
 MainWindow::~MainWindow()
@@ -135,13 +133,14 @@ void MainWindow::initUI()
     updateUi(0);
 
     initTrayIcon();
+
+    refreshTheme(ThemeChecker::instance()->useDarkTheme());
 }
 
 void MainWindow::initTitleBar()
 {
     ui->titlebar->setIcon(QIcon::fromTheme("spark-store"));
     ui->titlebar->setBackgroundTransparent(true);
-    ui->titlebar->setSwitchThemeMenuVisible(false); // 去除 dtk 标题栏主题切换菜单
 
     // 初始化标题栏控件
     DLabel *title = new DLabel(ui->titlebar);
@@ -320,40 +319,10 @@ void MainWindow::refreshTheme(bool isDarkMode)
     ui->settingspage->setTheme(isDarkMode); 
 }
 
-void MainWindow::onThemeChanged(bool isDark) {
-    DGuiApplicationHelper::ColorType currentTheme = DGuiApplicationHelper::instance()->themeType();
-
-    // 检查当前外观设置 
-    bool isUserSetDark = (currentTheme == DGuiApplicationHelper::DarkType); //当前已经是深色模式
-    bool isUserSetWhite = (currentTheme == DGuiApplicationHelper::LightType); //当前已经是浅色模式
-
-    // 检查 isDark 为 true 时， isUserSetDark 是否为 true
-    // 检查 isDark 为 false ， isUserSetWhite 是否为 ture
-    qDebug() << isUserSetDark << isUserSetWhite << isDark;
-
-
-    if ((isUserSetDark != isDark) || (isUserSetWhite == !isDark)) {
-        // 否则，根据传入的 isDark 值设置
-        refreshTheme(isDark);
-    }
-
-}
-
-
 void MainWindow::initConnections()
 {
-    
     // 主题切换
-    connect(DGuiApplicationHelper::instance(), &DGuiApplicationHelper::themeTypeChanged, this, [=](DGuiApplicationHelper::ColorType themeType)
-        {
-            bool isDarkMode = (themeType == DGuiApplicationHelper::ColorType::DarkType);   
-            refreshTheme(isDarkMode); 
-        });
-    
-    ThemeChecker *themeChecker = new ThemeChecker(this);
-    connect(themeChecker, SIGNAL(themeChanged(bool)), this, SLOT(onThemeChanged(bool)));
-
-   
+    connect(ThemeChecker::instance(), &ThemeChecker::themeChanged, this, &MainWindow::refreshTheme);
 
     // appintopage按下下载按钮时标题栏下载列表按钮抖动
     connect(ui->appintopage, &AppIntoPage::clickedDownloadBtn, [=]()

src/mainwindow-dtk.h

@@ -30,8 +30,7 @@ public:
     void openUrl(const QString &url);
 
     bool isCloseWindowAnimation();
-    void refreshTheme(bool isDarkMode);
-
+    Q_INVOKABLE void refreshTheme(bool isDarkMode);
 
 protected:
     void closeEvent(QCloseEvent *event) override;
@@ -50,7 +49,6 @@ private:
 
 public slots:
     void notify(QObject *receiver, QEvent *event);
-    void onThemeChanged(bool isDark);
 
 private slots:
     //接受来自dbus的url