.gitmodules

@@ -1,3 +1,3 @@
 [submodule "cmake"]
 	path = cmake
-	url = ../cmake-utils.git
+	url = https://github.com/wangwenx190/cmake-utils.git

include/FramelessHelper/Core/private/micamaterial_p.h

@@ -31,6 +31,12 @@ FRAMELESSHELPER_BEGIN_NAMESPACE
 
 class MicaMaterial;
 
+struct Transform
+{
+    qreal Horizontal = 0;
+    qreal Vertical = 0;
+};
+
 class FRAMELESSHELPER_CORE_API MicaMaterialPrivate : public QObject
 {
     Q_OBJECT
@@ -46,6 +52,9 @@ public:
 
     Q_NODISCARD static QColor systemFallbackColor();
 
+    Q_NODISCARD static QSize monitorSize();
+    Q_NODISCARD static QSize wallpaperSize();
+
     Q_NODISCARD QPoint mapToWallpaper(const QPoint &pos) const;
     Q_NODISCARD QSize mapToWallpaper(const QSize &size) const;
     Q_NODISCARD QRect mapToWallpaper(const QRect &rect) const;
@@ -69,7 +78,7 @@ private:
     bool fallbackEnabled = true;
     QBrush micaBrush = {};
     bool initialized = false;
-    QSize wallpaperSize = {};
+    Transform transform = {};
 };
 
 FRAMELESSHELPER_END_NAMESPACE

include/FramelessHelper/Widgets/private/standardsystembutton_p.h

@@ -57,6 +57,8 @@ public:
 
     Q_NODISCARD QSize getRecommendedButtonSize() const;
 
+    Q_NODISCARD bool isHovered() const;
+    Q_NODISCARD bool isPressed() const;
     Q_NODISCARD QColor getHoverColor() const;
     Q_NODISCARD QColor getPressColor() const;
     Q_NODISCARD QColor getNormalColor() const;
@@ -65,6 +67,8 @@ public:
     Q_NODISCARD bool isActive() const;
     Q_NODISCARD int iconSize2() const;
 
+    void setHovered(const bool value);
+    void setPressed(const bool value);
     void setHoverColor(const QColor &value);
     void setPressColor(const QColor &value);
     void setNormalColor(const QColor &value);
@@ -73,6 +77,8 @@ public:
     void setActive(const bool value);
     void setIconSize2(const int value);
 
+    void enterEventHandler(QT_ENTER_EVENT_TYPE *event);
+    void leaveEventHandler(QEvent *event);
     void paintEventHandler(QPaintEvent *event);
 
 private:
@@ -87,6 +93,8 @@ private:
     QColor m_normalColor = {};
     QColor m_activeForegroundColor = {};
     QColor m_inactiveForegroundColor = {};
+    bool m_hovered = false;
+    bool m_pressed = false;
     bool m_active = false;
     std::optional<int> m_iconSize2 = std::nullopt;
 };

include/FramelessHelper/Widgets/standardsystembutton.h

@@ -25,19 +25,21 @@
 #pragma once
 
 #include <FramelessHelper/Widgets/framelesshelperwidgets_global.h>
-#include <QtWidgets/qpushbutton.h>
+#include <QtWidgets/qabstractbutton.h>
 
 FRAMELESSHELPER_BEGIN_NAMESPACE
 
 class StandardSystemButtonPrivate;
 
-class FRAMELESSHELPER_WIDGETS_API StandardSystemButton : public QPushButton
+class FRAMELESSHELPER_WIDGETS_API StandardSystemButton : public QAbstractButton
 {
     Q_OBJECT
     Q_DECLARE_PRIVATE(StandardSystemButton)
     Q_DISABLE_COPY_MOVE(StandardSystemButton)
     Q_PROPERTY(Global::SystemButtonType buttonType READ buttonType WRITE setButtonType NOTIFY buttonTypeChanged FINAL)
     Q_PROPERTY(QString glyph READ glyph WRITE setGlyph NOTIFY glyphChanged FINAL)
+    Q_PROPERTY(bool hovered READ isHovered WRITE setHovered NOTIFY hoveredChanged FINAL)
+    Q_PROPERTY(bool pressed READ isPressed WRITE setPressed NOTIFY pressedChanged FINAL)
     Q_PROPERTY(QColor hoverColor READ hoverColor WRITE setHoverColor NOTIFY hoverColorChanged FINAL)
     Q_PROPERTY(QColor pressColor READ pressColor WRITE setPressColor NOTIFY pressColorChanged FINAL)
     Q_PROPERTY(QColor normalColor READ normalColor WRITE setNormalColor NOTIFY normalColorChanged FINAL)
@@ -54,6 +56,8 @@ public:
     Q_NODISCARD QSize sizeHint() const override;
     Q_NODISCARD Global::SystemButtonType buttonType();
     Q_NODISCARD QString glyph() const;
+    Q_NODISCARD bool isHovered() const;
+    Q_NODISCARD bool isPressed() const;
     Q_NODISCARD QColor hoverColor() const;
     Q_NODISCARD QColor pressColor() const;
     Q_NODISCARD QColor normalColor() const;
@@ -65,6 +69,8 @@ public:
 public Q_SLOTS:
     void setButtonType(const Global::SystemButtonType value);
     void setGlyph(const QString &glyph);
+    void setHovered(const bool value);
+    void setPressed(const bool value);
     void setHoverColor(const QColor &value);
     void setPressColor(const QColor &value);
     void setNormalColor(const QColor &value);
@@ -74,11 +80,15 @@ public Q_SLOTS:
     void setIconSize2(const int value);
 
 protected:
+    void enterEvent(QT_ENTER_EVENT_TYPE *event) override;
+    void leaveEvent(QEvent *event) override;
     void paintEvent(QPaintEvent *event) override;
 
 Q_SIGNALS:
     void buttonTypeChanged();
     void glyphChanged();
+    void hoveredChanged();
+    void pressedChanged();
     void hoverColorChanged();
     void pressColorChanged();
     void normalColorChanged();

src/core/micamaterial.cpp

@@ -86,7 +86,15 @@ struct ImageData
     QMutex mutex{};
 };
 
+struct MetricsData
+{
+    std::optional<QSize> monitorSize = std::nullopt;
+    std::optional<QSize> wallpaperSize = std::nullopt;
+    QMutex mutex{};
+};
+
 Q_GLOBAL_STATIC(ImageData, g_imageData)
+Q_GLOBAL_STATIC(MetricsData, g_metricsData)
 
 #ifndef FRAMELESSHELPER_CORE_NO_PRIVATE
 template<const int shift>
@@ -492,11 +500,20 @@ public:
     ~WallpaperThread() override = default;
 
 Q_SIGNALS:
-    void imageUpdated();
+    void imageUpdated(const Transform &);
 
 protected:
     void run() override
     {
+        Transform transform = {};
+        const QSize monitorSize = MicaMaterialPrivate::monitorSize();
+        const QSize imageSize = MicaMaterialPrivate::wallpaperSize();
+        // If we scaled the image size, record the scale factor and we need it to map our clip rect
+        // to the real (unscaled) rect.
+        if (imageSize != monitorSize) {
+            transform.Horizontal = (qreal(imageSize.width()) / qreal(monitorSize.width()));
+            transform.Vertical = (qreal(imageSize.height()) / qreal(monitorSize.height()));
+        }
         const QString wallpaperFilePath = Utils::getWallpaperFilePath();
         if (wallpaperFilePath.isEmpty()) {
             WARNING << "Failed to retrieve the wallpaper file path.";
@@ -529,8 +546,7 @@ protected:
             return;
         }
         WallpaperAspectStyle aspectStyle = Utils::getWallpaperAspectStyle();
-        const QSize wallpaperSize = QGuiApplication::primaryScreen()->size();
-        QImage buffer(wallpaperSize, kDefaultImageFormat);
+        QImage buffer(imageSize, kDefaultImageFormat);
 #ifdef Q_OS_WINDOWS
         if (aspectStyle == WallpaperAspectStyle::Center) {
             buffer.fill(kDefaultBlackColor);
@@ -546,11 +562,11 @@ protected:
                 mode = Qt::KeepAspectRatio;
             }
             QSize newSize = image.size();
-            newSize.scale(wallpaperSize, mode);
+            newSize.scale(imageSize, mode);
             image = image.scaled(newSize);
         }
         static constexpr const QPoint desktopOriginPoint = {0, 0};
-        const QRect desktopRect = {desktopOriginPoint, wallpaperSize};
+        const QRect desktopRect = {desktopOriginPoint, imageSize};
         if (aspectStyle == WallpaperAspectStyle::Tile) {
             QPainter bufferPainter(&buffer);
             // Same as above, we prefer speed than quality here.
@@ -569,7 +585,7 @@ protected:
         }
         {
             const QMutexLocker locker(&g_imageData()->mutex);
-            g_imageData()->blurredWallpaper = QPixmap(wallpaperSize);
+            g_imageData()->blurredWallpaper = QPixmap(imageSize);
             g_imageData()->blurredWallpaper.fill(kDefaultTransparentColor);
             QPainter painter(&g_imageData()->blurredWallpaper);
             // Same here.
@@ -582,7 +598,7 @@ protected:
             qt_blurImage(&painter, buffer, kDefaultBlurRadius, false, false);
 #endif // FRAMELESSHELPER_CORE_NO_PRIVATE
         }
-        Q_EMIT imageUpdated();
+        Q_EMIT imageUpdated(transform);
     }
 };
 
@@ -688,7 +704,7 @@ void MicaMaterialPrivate::paint(QPainter *painter, const QRect &rect, const bool
     }
     prepareGraphicsResources();
     static constexpr const QPoint originPoint = {0, 0};
-    const QRect wallpaperRect = { originPoint, wallpaperSize };
+    const QRect wallpaperRect = { originPoint, wallpaperSize() };
     const QRect mappedRect = mapToWallpaper(rect);
     painter->save();
     // Same as above. Speed is more important here.
@@ -746,7 +762,10 @@ void MicaMaterialPrivate::paint(QPainter *painter, const QRect &rect, const bool
 
 void MicaMaterialPrivate::forceRebuildWallpaper()
 {
-    wallpaperSize = QGuiApplication::primaryScreen()->size();
+    g_metricsData()->mutex.lock();
+    g_metricsData()->monitorSize = std::nullopt;
+    g_metricsData()->wallpaperSize = std::nullopt;
+    g_metricsData()->mutex.unlock();
     maybeGenerateBlurredWallpaper(true);
 }
 
@@ -757,7 +776,8 @@ void MicaMaterialPrivate::initialize()
         g_threadData()->thread = std::make_unique<WallpaperThread>();
         qAddPostRoutine(threadCleaner);
     }
-    connect(g_threadData()->thread.get(), &WallpaperThread::imageUpdated, this, [this](){
+    connect(g_threadData()->thread.get(), &WallpaperThread::imageUpdated, this, [this](const Transform &t){
+        transform = t;
         if (initialized) {
             Q_Q(MicaMaterial);
             Q_EMIT q->shouldRedraw();
@@ -765,8 +785,6 @@ void MicaMaterialPrivate::initialize()
     });
     g_threadData()->mutex.unlock();
 
-    wallpaperSize = QGuiApplication::primaryScreen()->size();
-
     tintColor = kDefaultTransparentColor;
     tintOpacity = kDefaultTintOpacity;
     // Leave fallbackColor invalid, we need to use this state to judge
@@ -806,24 +824,76 @@ QColor MicaMaterialPrivate::systemFallbackColor()
     return ((FramelessManager::instance()->systemTheme() == SystemTheme::Dark) ? kDefaultFallbackColorDark : kDefaultFallbackColorLight);
 }
 
+QSize MicaMaterialPrivate::monitorSize()
+{
+    g_metricsData()->mutex.lock();
+    if (!g_metricsData()->monitorSize.has_value()) {
+        g_metricsData()->mutex.unlock();
+        const QScreen * const monitor = QGuiApplication::primaryScreen();
+        Q_ASSERT(monitor);
+        // We do not use the virtual desktop size here, instead, we only calculate the primary
+        // monitor size to simplify the logic, otherwise we will need a lot more code to take
+        // every case into account.
+        QSize size = (monitor ? monitor->size() : kMaximumPictureSize);
+        if (Q_UNLIKELY(size.isEmpty())) {
+            WARNING << "Failed to retrieve the monitor size. Using default size (1920x1080) instead ...";
+            size = kMaximumPictureSize;
+        }
+        g_metricsData()->mutex.lock();
+        g_metricsData()->monitorSize = size;
+        // Don't unlock the mutex here, we'll unlock it from outside.
+        DEBUG << "Primary monitor size:" << size * (monitor ? monitor->devicePixelRatio() : qreal(1));
+    }
+    const QSize result = g_metricsData()->monitorSize.value();
+    g_metricsData()->mutex.unlock();
+    return result;
+}
+
+QSize MicaMaterialPrivate::wallpaperSize()
+{
+    g_metricsData()->mutex.lock();
+    if (!g_metricsData()->wallpaperSize.has_value()) {
+        g_metricsData()->mutex.unlock();
+        const QSize desktopSize = monitorSize();
+        // It's observed that QImage consumes too much memory if the image resolution is very large.
+        const QSize size = (desktopSize > kMaximumPictureSize ? kMaximumPictureSize : desktopSize);
+        g_metricsData()->mutex.lock();
+        g_metricsData()->wallpaperSize = size;
+        // Don't unlock the mutex here, we'll unlock it from outside.
+        DEBUG << "Wallpaper size:" << size;
+    }
+    const QSize result = g_metricsData()->wallpaperSize.value();
+    g_metricsData()->mutex.unlock();
+    return result;
+}
+
 QPoint MicaMaterialPrivate::mapToWallpaper(const QPoint &pos) const
 {
     if (pos.isNull()) {
         return {};
     }
     QPointF result = pos;
+    if (!qFuzzyIsNull(transform.Horizontal) && (transform.Horizontal > qreal(0))
+            && !qFuzzyCompare(transform.Horizontal, qreal(1))) {
+        result.setX(result.x() * transform.Horizontal);
+    }
+    if (!qFuzzyIsNull(transform.Vertical) && (transform.Vertical > qreal(0))
+            && !qFuzzyCompare(transform.Vertical, qreal(1))) {
+        result.setY(result.y() * transform.Vertical);
+    }
+    const QSizeF imageSize = wallpaperSize();
     // Make sure the position is always inside the wallpaper rectangle.
     while (result.x() < qreal(0)) {
-        result.setX(result.x() + wallpaperSize.width());
+        result.setX(result.x() + imageSize.width());
     }
-    while ((result.x() > wallpaperSize.width()) || qFuzzyCompare(result.x(), wallpaperSize.width())) {
-        result.setX(result.x() - wallpaperSize.width());
+    while ((result.x() > imageSize.width()) || qFuzzyCompare(result.x(), imageSize.width())) {
+        result.setX(result.x() - imageSize.width());
     }
     while (result.y() < qreal(0)) {
-        result.setY(result.y() + wallpaperSize.height());
+        result.setY(result.y() + imageSize.height());
     }
-    while ((result.y() > wallpaperSize.height()) || qFuzzyCompare(result.y(), wallpaperSize.height())) {
-        result.setY(result.y() - wallpaperSize.height());
+    while ((result.y() > imageSize.height()) || qFuzzyCompare(result.y(), imageSize.height())) {
+        result.setY(result.y() - imageSize.height());
     }
     return result.toPoint();
 }
@@ -834,19 +904,28 @@ QSize MicaMaterialPrivate::mapToWallpaper(const QSize &size) const
         return {};
     }
     QSizeF result = size;
-    // Make sure we don't get a size larger than the wallpaper's size.
-    if (result.width() > wallpaperSize.width()) {
-        result.setWidth(wallpaperSize.width());
+    if (!qFuzzyIsNull(transform.Horizontal) && (transform.Horizontal > qreal(0))
+            && !qFuzzyCompare(transform.Horizontal, qreal(1))) {
+        result.setWidth(result.width() * transform.Horizontal);
     }
-    if (result.height() > wallpaperSize.height()) {
-        result.setHeight(wallpaperSize.height());
+    if (!qFuzzyIsNull(transform.Vertical) && (transform.Vertical > qreal(0))
+            && !qFuzzyCompare(transform.Vertical, qreal(1))) {
+        result.setHeight(result.height() * transform.Vertical);
+    }
+    const QSizeF imageSize = wallpaperSize();
+    // Make sure we don't get a size larger than the wallpaper's size.
+    if (result.width() > imageSize.width()) {
+        result.setWidth(imageSize.width());
+    }
+    if (result.height() > imageSize.height()) {
+        result.setHeight(imageSize.height());
     }
     return result.toSize();
 }
 
 QRect MicaMaterialPrivate::mapToWallpaper(const QRect &rect) const
 {
-    const auto wallpaperRect = QRectF{ QPointF{ 0, 0 }, wallpaperSize };
+    const auto wallpaperRect = QRectF{ QPointF{ 0, 0 }, wallpaperSize() };
     const auto mappedRect = QRectF{ mapToWallpaper(rect.topLeft()), mapToWallpaper(rect.size()) };
     if (!Utils::isValidGeometry(mappedRect)) {
         WARNING << "The calculated mapped rectangle is not valid.";

src/core/utils.cpp

@@ -664,17 +664,11 @@ void Utils::emulateQtMouseEvent(const QObject *target, const QWindow *window, co
 #endif
         QCoreApplication::sendEvent(obj, &enterEvent);
         if (hoverEnabled) {
-#if (QT_VERSION >= QT_VERSION_CHECK(6, 4, 0))
             QHoverEvent hoverEnterEvent(QEvent::HoverEnter, scenePos, globalPos, oldPos, modifiers);
-#elif (QT_VERSION >= QT_VERSION_CHECK(6, 3, 0))
-            QHoverEvent hoverEnterEvent(QEvent::HoverEnter, localPos, globalPos, oldPos, modifiers);
-#else
-            QHoverEvent hoverEnterEvent(QEvent::HoverEnter, localPos, oldPos, modifiers);
-#endif
             QCoreApplication::sendEvent(obj, &hoverEnterEvent);
         }
     };
-    const auto sendLeaveEvent = [&localPos, &scenePos, &globalPos, &modifiers, hoverEnabled](QObject *obj) -> void {
+    const auto sendLeaveEvent = [&scenePos, &globalPos, &modifiers, hoverEnabled](QObject *obj) -> void {
         Q_ASSERT(obj);
         if (!obj) {
             return;
@@ -682,13 +676,7 @@ void Utils::emulateQtMouseEvent(const QObject *target, const QWindow *window, co
         QEvent leaveEvent(QEvent::Leave);
         QCoreApplication::sendEvent(obj, &leaveEvent);
         if (hoverEnabled) {
-#if (QT_VERSION >= QT_VERSION_CHECK(6, 4, 0))
             QHoverEvent hoverLeaveEvent(QEvent::HoverLeave, scenePos, globalPos, oldPos, modifiers);
-#elif (QT_VERSION >= QT_VERSION_CHECK(6, 3, 0))
-            QHoverEvent hoverLeaveEvent(QEvent::HoverLeave, localPos, globalPos, oldPos, modifiers);
-#else
-            QHoverEvent hoverLeaveEvent(QEvent::HoverLeave, localPos, oldPos, modifiers);
-#endif
             QCoreApplication::sendEvent(obj, &hoverLeaveEvent);
         }
     };
@@ -701,7 +689,7 @@ void Utils::emulateQtMouseEvent(const QObject *target, const QWindow *window, co
         QMouseEvent event(QEvent::MouseMove, localPos, scenePos, globalPos, actualButton, buttons, modifiers);
         QCoreApplication::sendEvent(obj, &event);
     };
-    const auto sendHoverMoveEvent = [&localPos, &scenePos, &globalPos, &modifiers, hoverEnabled](QObject *obj) -> void {
+    const auto sendHoverMoveEvent = [&scenePos, &globalPos, &modifiers, hoverEnabled](QObject *obj) -> void {
         Q_ASSERT(obj);
         if (!obj) {
             return;
@@ -709,13 +697,7 @@ void Utils::emulateQtMouseEvent(const QObject *target, const QWindow *window, co
         if (!hoverEnabled) {
             return;
         }
-#if (QT_VERSION >= QT_VERSION_CHECK(6, 4, 0))
         QHoverEvent event(QEvent::HoverMove, scenePos, globalPos, oldPos, modifiers);
-#elif (QT_VERSION >= QT_VERSION_CHECK(6, 3, 0))
-        QHoverEvent event(QEvent::HoverMove, localPos, globalPos, oldPos, modifiers);
-#else
-        QHoverEvent event(QEvent::HoverMove, localPos, oldPos, modifiers);
-#endif
         QCoreApplication::sendEvent(obj, &event);
     };
     const auto sendMousePressEvent = [&localPos, &scenePos, &globalPos, &buttons, &modifiers](QObject *obj) -> void {
@@ -731,18 +713,18 @@ void Utils::emulateQtMouseEvent(const QObject *target, const QWindow *window, co
         if (!obj) {
             return;
         }
-        QMouseEvent event(QEvent::MouseButtonRelease, localPos, scenePos, globalPos, button, buttons, modifiers);
+        static constexpr const auto fakePos = QPoint{ -999, -999 };
+        const QPoint tweakedLocalPos = (fake ? fakePos : localPos);
+        const QPoint tweakedScenePos = (fake ? fakePos : scenePos);
+        const QPoint tweakedGlobalPos = (fake ? fakePos : globalPos);
+        QMouseEvent event(QEvent::MouseButtonRelease, tweakedLocalPos, tweakedScenePos, tweakedGlobalPos, button, buttons, modifiers);
         QCoreApplication::sendEvent(obj, &event);
     };
     switch (buttonState) {
     case ButtonState::Normal: {
         targetObj->setProperty(kEnteredFlag, {});
         // Send an extra mouse release event to let the control dismiss it's hover state.
-        // But only when the mouse is not still hovering above the control, otherwise Qt will
-        // generate a mouse click event, which is not what the user would expect.
-        if (!underMouse) {
-            sendMouseReleaseEvent(targetObj);
-        }
+        sendMouseReleaseEvent(targetObj, true);
         if (isWidget) {
             sendLeaveEvent(targetObj);
         } else {

src/widgets/standardsystembutton.cpp

@@ -124,6 +124,16 @@ QSize StandardSystemButtonPrivate::getRecommendedButtonSize() const
     return kDefaultSystemButtonSize;
 }
 
+bool StandardSystemButtonPrivate::isHovered() const
+{
+    return m_hovered;
+}
+
+bool StandardSystemButtonPrivate::isPressed() const
+{
+    return m_pressed;
+}
+
 QColor StandardSystemButtonPrivate::getHoverColor() const
 {
     return m_hoverColor;
@@ -159,6 +169,55 @@ int StandardSystemButtonPrivate::iconSize2() const
     return m_iconSize2.value_or(FramelessManagerPrivate::getIconFont().pointSize());
 }
 
+void StandardSystemButtonPrivate::setHovered(const bool value)
+{
+    if (m_hovered == value) {
+        return;
+    }
+    m_hovered = value;
+    Q_Q(StandardSystemButton);
+    q->update();
+#if 0
+    if (m_hovered) {
+        const QString toolTip = q->toolTip();
+        if (!toolTip.isEmpty() && !QToolTip::isVisible()) {
+            const auto yPos = [q]() -> int {
+                static const int h = kDefaultSystemButtonSize.height();
+                if (const QWidget * const window = q->window()) {
+                    if (Utils::windowStatesToWindowState(window->windowState()) == Qt::WindowMaximized) {
+                        return std::round(qreal(h) * qreal(0.5));
+                    }
+                }
+                return -std::round(qreal(h) * qreal(1.3));
+            }();
+            QToolTip::showText(q->mapToGlobal(QPoint(-2, yPos)), toolTip, q, q->geometry());
+        }
+    } else {
+        if (QToolTip::isVisible()) {
+            QToolTip::hideText();
+        }
+    }
+#endif
+    Q_EMIT q->hoveredChanged();
+}
+
+void StandardSystemButtonPrivate::setPressed(const bool value)
+{
+    if (m_pressed == value) {
+        return;
+    }
+    m_pressed = value;
+    Q_Q(StandardSystemButton);
+    q->setDown(m_pressed);
+    q->update();
+    Q_EMIT q->pressedChanged();
+    if (m_pressed) {
+        Q_EMIT q->pressed();
+    } else {
+        Q_EMIT q->released();
+    }
+}
+
 void StandardSystemButtonPrivate::setHoverColor(const QColor &value)
 {
     Q_ASSERT(value.isValid());
@@ -260,6 +319,26 @@ void StandardSystemButtonPrivate::setIconSize2(const int value)
     Q_EMIT q->iconSize2Changed();
 }
 
+void StandardSystemButtonPrivate::enterEventHandler(QT_ENTER_EVENT_TYPE *event)
+{
+    Q_ASSERT(event);
+    if (!event) {
+        return;
+    }
+    setHovered(true);
+    event->accept();
+}
+
+void StandardSystemButtonPrivate::leaveEventHandler(QEvent *event)
+{
+    Q_ASSERT(event);
+    if (!event) {
+        return;
+    }
+    setHovered(false);
+    event->accept();
+}
+
 void StandardSystemButtonPrivate::paintEventHandler(QPaintEvent *event)
 {
     Q_ASSERT(event);
@@ -271,12 +350,12 @@ void StandardSystemButtonPrivate::paintEventHandler(QPaintEvent *event)
     painter.save();
     painter.setRenderHints(QPainter::Antialiasing | QPainter::TextAntialiasing
                            | QPainter::SmoothPixmapTransform);
-    const auto backgroundColor = [this, q]() -> QColor {
+    const auto backgroundColor = [this]() -> QColor {
         // The pressed state has higher priority than the hovered state.
-        if (q->isDown() && m_pressColor.isValid()) {
+        if (m_pressed && m_pressColor.isValid()) {
             return m_pressColor;
         }
-        if (q->underMouse() && m_hoverColor.isValid()) {
+        if (m_hovered && m_hoverColor.isValid()) {
             return m_hoverColor;
         }
         if (m_normalColor.isValid()) {
@@ -289,8 +368,8 @@ void StandardSystemButtonPrivate::paintEventHandler(QPaintEvent *event)
         painter.fillRect(buttonRect, backgroundColor);
     }
     if (!m_glyph.isEmpty()) {
-        painter.setPen([this, q]() -> QColor {
-            if (!q->underMouse() && !m_active && m_inactiveForegroundColor.isValid()) {
+        painter.setPen([this]() -> QColor {
+            if (!m_hovered && !m_active && m_inactiveForegroundColor.isValid()) {
                 return m_inactiveForegroundColor;
             }
             if (m_activeForegroundColor.isValid()) {
@@ -318,10 +397,12 @@ void StandardSystemButtonPrivate::initialize()
     q->setSizePolicy(QSizePolicy::Fixed, QSizePolicy::Fixed);
     q->setFixedSize(kDefaultSystemButtonSize);
     q->setIconSize(kDefaultSystemButtonIconSize);
+    connect(q, &StandardSystemButton::pressed, this, [this](){ setPressed(true); });
+    connect(q, &StandardSystemButton::released, this, [this](){ setPressed(false); });
 }
 
 StandardSystemButton::StandardSystemButton(QWidget *parent)
-    : QPushButton(parent), d_ptr(new StandardSystemButtonPrivate(this))
+    : QAbstractButton(parent), d_ptr(new StandardSystemButtonPrivate(this))
 {
 }
 
@@ -363,6 +444,30 @@ void StandardSystemButton::setGlyph(const QString &glyph)
     d->setGlyph(glyph);
 }
 
+bool StandardSystemButton::isHovered() const
+{
+    Q_D(const StandardSystemButton);
+    return d->isHovered();
+}
+
+void StandardSystemButton::setHovered(const bool value)
+{
+    Q_D(StandardSystemButton);
+    d->setHovered(value);
+}
+
+bool StandardSystemButton::isPressed() const
+{
+    Q_D(const StandardSystemButton);
+    return d->isPressed();
+}
+
+void StandardSystemButton::setPressed(const bool value)
+{
+    Q_D(StandardSystemButton);
+    d->setPressed(value);
+}
+
 QColor StandardSystemButton::hoverColor() const
 {
     Q_D(const StandardSystemButton);
@@ -447,6 +552,20 @@ void StandardSystemButton::setIconSize2(const int value)
     d->setIconSize2(value);
 }
 
+void StandardSystemButton::enterEvent(QT_ENTER_EVENT_TYPE *event)
+{
+    QAbstractButton::enterEvent(event);
+    Q_D(StandardSystemButton);
+    d->enterEventHandler(event);
+}
+
+void StandardSystemButton::leaveEvent(QEvent *event)
+{
+    QAbstractButton::leaveEvent(event);
+    Q_D(StandardSystemButton);
+    d->leaveEventHandler(event);
+}
+
 void StandardSystemButton::paintEvent(QPaintEvent *event)
 {
     Q_D(StandardSystemButton);