general: fix the system button background color in various cases

Signed-off-by: Yuhang Zhao <2546789017@qq.com>

include/FramelessHelper/Quick/private/quickstandardclosebutton_p.h

@@ -47,17 +47,22 @@ public:
     explicit QuickStandardCloseButton(QQuickItem *parent = nullptr);
     ~QuickStandardCloseButton() override;
 
-private Q_SLOTS:
+public Q_SLOTS:
     void updateForeground();
     void updateBackground();
+    void setInactive(const bool value);
 
 private:
     void initialize();
+    void checkInactive();
 
 private:
     QScopedPointer<QQuickItem> m_contentItem;
     QScopedPointer<QQuickImage> m_image;
     QScopedPointer<QQuickRectangle> m_backgroundItem;
+    bool m_forceLightTheme = false;
+    bool m_shouldCheck = false;
+    bool m_checkFlag = false;
 };
 
 FRAMELESSHELPER_END_NAMESPACE

include/FramelessHelper/Quick/private/quickstandardmaximizebutton_p.h

@@ -51,21 +51,26 @@ public:
     Q_NODISCARD bool isMaximized() const;
     void setMaximized(const bool max);
 
-private Q_SLOTS:
+public Q_SLOTS:
     void updateForeground();
     void updateBackground();
+    void setInactive(const bool value);
 
 Q_SIGNALS:
     void maximizedChanged();
 
 private:
     void initialize();
+    void checkInactive();
 
 private:
     bool m_max = false;
     QScopedPointer<QQuickItem> m_contentItem;
     QScopedPointer<QQuickImage> m_image;
     QScopedPointer<QQuickRectangle> m_backgroundItem;
+    bool m_forceLightTheme = false;
+    bool m_shouldCheck = false;
+    bool m_checkFlag = false;
 };
 
 FRAMELESSHELPER_END_NAMESPACE

include/FramelessHelper/Quick/private/quickstandardminimizebutton_p.h

@@ -47,17 +47,22 @@ public:
     explicit QuickStandardMinimizeButton(QQuickItem *parent = nullptr);
     ~QuickStandardMinimizeButton() override;
 
-private Q_SLOTS:
+public Q_SLOTS:
     void updateForeground();
     void updateBackground();
+    void setInactive(const bool value);
 
 private:
     void initialize();
+    void checkInactive();
 
 private:
     QScopedPointer<QQuickItem> m_contentItem;
     QScopedPointer<QQuickImage> m_image;
     QScopedPointer<QQuickRectangle> m_backgroundItem;
+    bool m_forceLightTheme = false;
+    bool m_shouldCheck = false;
+    bool m_checkFlag = false;
 };
 
 FRAMELESSHELPER_END_NAMESPACE

include/FramelessHelper/Widgets/private/standardsystembutton_p.h

@@ -75,8 +75,11 @@ public:
     void leaveEventHandler(QEvent *event);
     void paintEventHandler(QPaintEvent *event);
 
+    void setInactive(const bool value);
+
 private:
     void initialize();
+    void checkInactive();
 
 private:
     StandardSystemButton *q_ptr = nullptr;
@@ -88,6 +91,9 @@ private:
     QColor m_pressColor = {};
     bool m_hovered = false;
     bool m_pressed = false;
+    bool m_forceLightTheme = false;
+    bool m_shouldCheck = false;
+    bool m_checkFlag = false;
 };
 
 FRAMELESSHELPER_END_NAMESPACE

src/quick/quickstandardclosebutton.cpp

@@ -52,7 +52,7 @@ QuickStandardCloseButton::~QuickStandardCloseButton() = default;
 
 void QuickStandardCloseButton::updateForeground()
 {
-    const bool dark = (Utils::shouldAppsUseDarkMode() || Utils::isTitleBarColorized());
+    const bool dark = ((Utils::shouldAppsUseDarkMode() || Utils::isTitleBarColorized()) && !m_forceLightTheme);
     const auto url = QUrl((dark || isHovered() || isPressed()) ? kDarkUrl : kLightUrl);
     initResource();
     m_image->setSource(url);
@@ -65,9 +65,31 @@ void QuickStandardCloseButton::updateBackground()
     const bool press = isPressed();
     m_backgroundItem->setColor(Utils::calculateSystemButtonBackgroundColor(button, (press ? ButtonState::Pressed : ButtonState::Hovered)));
     m_backgroundItem->setVisible(hover || press);
+    checkInactive();
     qobject_cast<QQuickToolTipAttached *>(qmlAttachedPropertiesObject<QQuickToolTip>(this))->setVisible(hover);
 }
 
+void QuickStandardCloseButton::setInactive(const bool value)
+{
+    const bool force = (value && Utils::isTitleBarColorized() && !Utils::shouldAppsUseDarkMode());
+    if (m_forceLightTheme == force) {
+        return;
+    }
+    m_forceLightTheme = force;
+    m_shouldCheck = m_forceLightTheme;
+    updateForeground();
+}
+
+void QuickStandardCloseButton::checkInactive()
+{
+    if (!m_shouldCheck) {
+        return;
+    }
+    m_forceLightTheme = m_checkFlag;
+    m_checkFlag = !m_checkFlag;
+    updateForeground();
+}
+
 void QuickStandardCloseButton::initialize()
 {
     setImplicitWidth(kDefaultSystemButtonSize.width());

src/quick/quickstandardmaximizebutton.cpp

@@ -68,7 +68,7 @@ void QuickStandardMaximizeButton::setMaximized(const bool max)
 
 void QuickStandardMaximizeButton::updateForeground()
 {
-    const bool dark = (Utils::shouldAppsUseDarkMode() || Utils::isTitleBarColorized());
+    const bool dark = ((Utils::shouldAppsUseDarkMode() || Utils::isTitleBarColorized()) && !m_forceLightTheme);
     const auto url = QUrl(dark ? (m_max ? kDarkRestoreUrl : kDarkMaxUrl) : (m_max ? kLightRestoreUrl : kLightMaxUrl));
     initResource();
     m_image->setSource(url);
@@ -81,9 +81,31 @@ void QuickStandardMaximizeButton::updateBackground()
     const bool press = isPressed();
     m_backgroundItem->setColor(Utils::calculateSystemButtonBackgroundColor(button, (press ? ButtonState::Pressed : ButtonState::Hovered)));
     m_backgroundItem->setVisible(hover || press);
+    checkInactive();
     qobject_cast<QQuickToolTipAttached *>(qmlAttachedPropertiesObject<QQuickToolTip>(this))->setVisible(hover);
 }
 
+void QuickStandardMaximizeButton::setInactive(const bool value)
+{
+    const bool force = (value && Utils::isTitleBarColorized() && !Utils::shouldAppsUseDarkMode());
+    if (m_forceLightTheme == force) {
+        return;
+    }
+    m_forceLightTheme = force;
+    m_shouldCheck = m_forceLightTheme;
+    updateForeground();
+}
+
+void QuickStandardMaximizeButton::checkInactive()
+{
+    if (!m_shouldCheck) {
+        return;
+    }
+    m_forceLightTheme = m_checkFlag;
+    m_checkFlag = !m_checkFlag;
+    updateForeground();
+}
+
 void QuickStandardMaximizeButton::initialize()
 {
     setImplicitWidth(kDefaultSystemButtonSize.width());

src/quick/quickstandardminimizebutton.cpp

@@ -52,7 +52,7 @@ QuickStandardMinimizeButton::~QuickStandardMinimizeButton() = default;
 
 void QuickStandardMinimizeButton::updateForeground()
 {
-    const bool dark = (Utils::shouldAppsUseDarkMode() || Utils::isTitleBarColorized());
+    const bool dark = ((Utils::shouldAppsUseDarkMode() || Utils::isTitleBarColorized()) && !m_forceLightTheme);
     const auto url = QUrl(dark ? kDarkUrl : kLightUrl);
     initResource();
     m_image->setSource(url);
@@ -65,9 +65,31 @@ void QuickStandardMinimizeButton::updateBackground()
     const bool press = isPressed();
     m_backgroundItem->setColor(Utils::calculateSystemButtonBackgroundColor(button, (press ? ButtonState::Pressed : ButtonState::Hovered)));
     m_backgroundItem->setVisible(hover || press);
+    checkInactive();
     qobject_cast<QQuickToolTipAttached *>(qmlAttachedPropertiesObject<QQuickToolTip>(this))->setVisible(hover);
 }
 
+void QuickStandardMinimizeButton::setInactive(const bool value)
+{
+    const bool force = (value && Utils::isTitleBarColorized() && !Utils::shouldAppsUseDarkMode());
+    if (m_forceLightTheme == force) {
+        return;
+    }
+    m_forceLightTheme = force;
+    m_shouldCheck = m_forceLightTheme;
+    updateForeground();
+}
+
+void QuickStandardMinimizeButton::checkInactive()
+{
+    if (!m_shouldCheck) {
+        return;
+    }
+    m_forceLightTheme = m_checkFlag;
+    m_checkFlag = !m_checkFlag;
+    updateForeground();
+}
+
 void QuickStandardMinimizeButton::initialize()
 {
     setImplicitWidth(kDefaultSystemButtonSize.width());

src/quick/quickstandardtitlebar.cpp

@@ -155,9 +155,10 @@ void QuickStandardTitleBar::updateTitleBarColor()
     if (!w) {
         return;
     }
+    const bool active = w->isActive();
     QColor backgroundColor = {};
     QColor foregroundColor = {};
-    if (w->isActive()) {
+    if (active) {
         if (Utils::isTitleBarColorized()) {
 #ifdef Q_OS_WINDOWS
             backgroundColor = Utils::getDwmColorizationColor();
@@ -188,6 +189,9 @@ void QuickStandardTitleBar::updateTitleBarColor()
     }
     setColor(backgroundColor);
     m_windowTitleLabel->setColor(foregroundColor);
+    m_minimizeButton->setInactive(!active);
+    m_maximizeButton->setInactive(!active);
+    m_closeButton->setInactive(!active);
 }
 
 void QuickStandardTitleBar::clickMinimizeButton()

src/widgets/standardsystembutton.cpp

@@ -73,7 +73,10 @@ void StandardSystemButtonPrivate::refreshButtonTheme(const bool force)
     if (m_buttonType == SystemButtonType::Unknown) {
         return;
     }
-    const SystemTheme systemTheme = []() -> SystemTheme {
+    const SystemTheme systemTheme = [this]() -> SystemTheme {
+        if (m_forceLightTheme) {
+            return SystemTheme::Light;
+        }
 #ifdef Q_OS_WINDOWS
         if (Utils::isTitleBarColorized()) {
             return SystemTheme::Dark;
@@ -204,7 +207,16 @@ void StandardSystemButtonPrivate::setHovered(const bool value)
     if (m_hovered) {
         const QString toolTip = q->toolTip();
         if (!toolTip.isEmpty() && !QToolTip::isVisible()) {
-            QToolTip::showText(q->mapToGlobal(QPoint(0, -(qRound(qreal(q->height()) * 1.3)))), toolTip, q, q->geometry());
+            const int yPos = [q]() -> int {
+                const auto h = qreal(q->height());
+                if (const QWidget * const window = q->window()) {
+                    if (Utils::windowStatesToWindowState(window->windowState()) == Qt::WindowMaximized) {
+                        return int(qRound(h * 0.5));
+                    }
+                }
+                return -int(qRound(h * 1.3));
+            }();
+            QToolTip::showText(q->mapToGlobal(QPoint(-2, yPos)), toolTip, q, q->geometry());
         }
     } else {
         if (QToolTip::isVisible()) {
@@ -299,17 +311,40 @@ void StandardSystemButtonPrivate::paintEventHandler(QPaintEvent *event)
         painter.fillRect(g_buttonRect, color);
     }
     if (!m_icon.isNull()) {
-        painter.drawPixmap(g_buttonIconX,
+        painter.drawPixmap(g_buttonIconX, g_buttonIconY, [this]() -> QPixmap {
-                           g_buttonIconY,
+            if (m_reversedIcon.isNull()) {
-                           ((m_buttonType == SystemButtonType::Close)
+                return m_icon;
-                            && (m_buttonTheme == SystemTheme::Light) && m_hovered
+            }
-                            && !m_reversedIcon.isNull())
+            if (m_hovered && m_forceLightTheme) {
-                               ? m_reversedIcon
+                return m_reversedIcon;
-                               : m_icon);
+            }
+            return m_icon;
+        }());
     }
     painter.restore();
 }
 
+void StandardSystemButtonPrivate::setInactive(const bool value)
+{
+    const bool force = (value && Utils::isTitleBarColorized() && !Utils::shouldAppsUseDarkMode());
+    if (m_forceLightTheme == force) {
+        return;
+    }
+    m_forceLightTheme = force;
+    m_shouldCheck = m_forceLightTheme;
+    refreshButtonTheme(true);
+}
+
+void StandardSystemButtonPrivate::checkInactive()
+{
+    if (!m_shouldCheck) {
+        return;
+    }
+    m_forceLightTheme = m_checkFlag;
+    m_checkFlag = !m_checkFlag;
+    refreshButtonTheme(true);
+}
+
 void StandardSystemButtonPrivate::initialize()
 {
     Q_Q(StandardSystemButton);

src/widgets/standardtitlebar.cpp

@@ -25,6 +25,7 @@
 #include "standardtitlebar.h"
 #include "standardtitlebar_p.h"
 #include "standardsystembutton.h"
+#include "standardsystembutton_p.h"
 #include <QtCore/qcoreevent.h>
 #include <QtGui/qpainter.h>
 #include <QtWidgets/qlabel.h>
@@ -84,13 +85,13 @@ void StandardTitleBarPrivate::setTitleLabelAlignment(const Qt::Alignment value)
     m_labelAlignment = value;
     bool needsInvalidate = false;
     if (m_labelAlignment & Qt::AlignLeft) {
-        m_labelLeftStretch->changeSize(0, 0);
+        m_labelLeftStretch->changeSize(kDefaultTitleBarContentsMargin, 0, QSizePolicy::Fixed);
         m_labelRightStretch->changeSize(0, 0, QSizePolicy::Expanding);
         needsInvalidate = true;
     }
     if (m_labelAlignment & Qt::AlignRight) {
         m_labelLeftStretch->changeSize(0, 0, QSizePolicy::Expanding);
-        m_labelRightStretch->changeSize(0, 0);
+        m_labelRightStretch->changeSize(kDefaultTitleBarContentsMargin, 0, QSizePolicy::Fixed);
         needsInvalidate = true;
     }
     if (m_labelAlignment & Qt::AlignHCenter) {
@@ -100,6 +101,8 @@ void StandardTitleBarPrivate::setTitleLabelAlignment(const Qt::Alignment value)
     }
     Q_Q(StandardTitleBar);
     if (needsInvalidate) {
+        // Tell the layout manager that we have changed the layout item's size
+        // manually to let it refresh the layout immediately.
         q->layout()->invalidate();
     }
     Q_EMIT q->titleLabelAlignmentChanged();
@@ -162,6 +165,9 @@ void StandardTitleBarPrivate::updateTitleBarStyleSheet()
     }();
     const QColor windowTitleLabelTextColor = (active ? ((dark || colorizedTitleBar) ? kDefaultWhiteColor : kDefaultBlackColor) : kDefaultDarkGrayColor);
     m_windowTitleLabel->setStyleSheet(kStyleSheetColorTemplate.arg(windowTitleLabelTextColor.name()));
+    StandardSystemButtonPrivate::get(m_minimizeButton.data())->setInactive(!active);
+    StandardSystemButtonPrivate::get(m_maximizeButton.data())->setInactive(!active);
+    StandardSystemButtonPrivate::get(m_closeButton.data())->setInactive(!active);
     Q_Q(StandardTitleBar);
     q->setStyleSheet(kStyleSheetBackgroundColorTemplate.arg(titleBarBackgroundColor.name()));
     q->update();
@@ -253,9 +259,8 @@ void StandardTitleBarPrivate::initialize()
     systemButtonsOuterLayout->addLayout(systemButtonsInnerLayout);
     systemButtonsOuterLayout->addStretch();
     const auto titleBarLayout = new QHBoxLayout(q);
-    titleBarLayout->setContentsMargins(0, 0, 0, 0);
     titleBarLayout->setSpacing(0);
-    titleBarLayout->addSpacerItem(new QSpacerItem(kDefaultTitleBarContentsMargin, 0, QSizePolicy::Fixed, QSizePolicy::Fixed));
+    titleBarLayout->setContentsMargins(0, 0, 0, 0);
     titleBarLayout->addLayout(titleLabelLayout);
     titleBarLayout->addLayout(systemButtonsOuterLayout);
     q->setLayout(titleBarLayout);