/****************************************************************************
**
** Copyright (C) 2016 The Qt Company Ltd.
** Contact: https://www.qt.io/licensing/
**
** This file is part of the QtWidgets module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
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** accordance with the commercial license agreement provided with the
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** Alternatively, this file may be used under the terms of the GNU Lesser
** General Public License version 3 as published by the Free Software
** Foundation and appearing in the file LICENSE.LGPL3 included in the
** packaging of this file. Please review the following information to
** ensure the GNU Lesser General Public License version 3 requirements
** will be met: https://www.gnu.org/licenses/lgpl-3.0.html.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 2.0 or (at your option) the GNU General
** Public license version 3 or any later version approved by the KDE Free
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** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3
** included in the packaging of this file. Please review the following
** information to ensure the GNU General Public License requirements will
** be met: https://www.gnu.org/licenses/gpl-2.0.html and
** https://www.gnu.org/licenses/gpl-3.0.html.
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** $QT_END_LICENSE$
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****************************************************************************/

#include "qwindowsstyle_p.h"
#include "qwindowsstyle_p_p.h"

#if QT_CONFIG(style_windows) || defined(QT_PLUGIN)

#include "qapplication.h"
#include "qbitmap.h"
#include "qdrawutil.h" // for now
#include "qevent.h"
#if QT_CONFIG(menu)
#include "qmenu.h"
#endif
#if QT_CONFIG(menubar)
#include "qmenubar.h"
#include <private/qmenubar_p.h>
#endif
#include "qpaintengine.h"
#include "qpainter.h"
#if QT_CONFIG(rubberband)
#include "qrubberband.h"
#endif
#include "qstyleoption.h"
#if QT_CONFIG(tabbar)
#include "qtabbar.h"
#endif
#include "qwidget.h"
#include "qdebug.h"
#if QT_CONFIG(mainwindow)
#include "qmainwindow.h"
#endif
#include "qfile.h"
#include "qtextstream.h"
#include "qpixmapcache.h"
#if QT_CONFIG(wizard)
#include "qwizard.h"
#endif
#if QT_CONFIG(listview)
#include "qlistview.h"
#endif
#include <private/qmath_p.h>
#include <qmath.h>
#include <QtGui/qscreen.h>
#include <QtGui/qwindow.h>
#include <qpa/qplatformtheme.h>
#include <qpa/qplatformscreen.h>
#include <private/qguiapplication_p.h>
#include <private/qhighdpiscaling_p.h>
#include <private/qwidget_p.h>

#include <private/qstylehelper_p.h>
#if QT_CONFIG(animation)
#include <private/qstyleanimation_p.h>
#endif

#include <algorithm>

QT_BEGIN_NAMESPACE

#if defined(Q_OS_WIN)

QT_BEGIN_INCLUDE_NAMESPACE
#include "qt_windows.h"
QT_END_INCLUDE_NAMESPACE
#  ifndef COLOR_GRADIENTACTIVECAPTION
#    define COLOR_GRADIENTACTIVECAPTION     27
#  endif
#  ifndef COLOR_GRADIENTINACTIVECAPTION
#    define COLOR_GRADIENTINACTIVECAPTION   28
#  endif

Q_GUI_EXPORT HICON qt_pixmapToWinHICON(const QPixmap &);
#endif //Q_OS_WIN

QT_BEGIN_INCLUDE_NAMESPACE
#include <limits.h>
QT_END_INCLUDE_NAMESPACE

enum QSliderDirection { SlUp, SlDown, SlLeft, SlRight };

/*
    \internal
*/

QWindowsStylePrivate::QWindowsStylePrivate() = default;

qreal QWindowsStylePrivate::appDevicePixelRatio()
{
    return qApp->devicePixelRatio();
}

// Returns \c true if the toplevel parent of \a widget has seen the Alt-key
bool QWindowsStylePrivate::hasSeenAlt(const QWidget *widget) const
{
    widget = widget->window();
    return seenAlt.contains(widget);
}

/*!
    \reimp
*/
bool QWindowsStyle::eventFilter(QObject *o, QEvent *e)
{
    // Records Alt- and Focus events
    if (!o->isWidgetType())
        return QObject::eventFilter(o, e);

    QWidget *widget = qobject_cast<QWidget*>(o);
    Q_D(QWindowsStyle);
    switch(e->type()) {
    case QEvent::KeyPress:
        if (static_cast<QKeyEvent *>(e)->key() == Qt::Key_Alt) {
            widget = widget->window();

            // Alt has been pressed - find all widgets that care
            QList<QWidget *> l = widget->findChildren<QWidget *>();
            auto ignorable = [](QWidget *w) {
                return w->isWindow() || !w->isVisible()
                        || w->style()->styleHint(SH_UnderlineShortcut, nullptr, w);
            };
            l.erase(std::remove_if(l.begin(), l.end(), ignorable), l.end());
            // Update states before repainting
            d->seenAlt.append(widget);
            d->alt_down = true;

            // Repaint all relevant widgets
            for (int pos = 0; pos < l.size(); ++pos)
                l.at(pos)->update();
        }
        break;
    case QEvent::KeyRelease:
        if (static_cast<QKeyEvent*>(e)->key() == Qt::Key_Alt) {
            widget = widget->window();

            // Update state and repaint the menu bars.
            d->alt_down = false;
#if QT_CONFIG(menubar)
            QList<QMenuBar *> l = widget->findChildren<QMenuBar *>();
            for (int i = 0; i < l.size(); ++i)
                l.at(i)->update();
#endif
        }
        break;
    case QEvent::Close:
        // Reset widget when closing
        d->seenAlt.removeAll(widget);
        d->seenAlt.removeAll(widget->window());
        break;
    default:
        break;
    }
    return QCommonStyle::eventFilter(o, e);
}

/*!
    \class QWindowsStyle
    \brief The QWindowsStyle class provides a Microsoft Windows-like look and feel.

    \ingroup appearance
    \inmodule QtWidgets
    \internal

    This style is Qt's default GUI style on Windows.

    \image qwindowsstyle.png
    \sa QWindowsVistaStyle, QMacStyle, QFusionStyle
*/

/*!
    Constructs a QWindowsStyle object.
*/
QWindowsStyle::QWindowsStyle() : QCommonStyle(*new QWindowsStylePrivate)
{
}

/*!
    \internal

    Constructs a QWindowsStyle object.
*/
QWindowsStyle::QWindowsStyle(QWindowsStylePrivate &dd) : QCommonStyle(dd)
{
}


/*! Destroys the QWindowsStyle object. */
QWindowsStyle::~QWindowsStyle()
{
}

#ifdef Q_OS_WIN
static inline QRgb colorref2qrgb(COLORREF col)
{
    return qRgb(GetRValue(col), GetGValue(col), GetBValue(col));
}
#endif

/*! \reimp */
void QWindowsStyle::polish(QApplication *app)
{
    QCommonStyle::polish(app);
    QWindowsStylePrivate *d = const_cast<QWindowsStylePrivate*>(d_func());
    // We only need the overhead when shortcuts are sometimes hidden
    if (!proxy()->styleHint(SH_UnderlineShortcut, nullptr) && app)
        app->installEventFilter(this);

    const auto &palette = QGuiApplication::palette();
    d->activeGradientCaptionColor = palette.highlight().color();
    d->activeCaptionColor = d->activeGradientCaptionColor;
    d->inactiveGradientCaptionColor = palette.dark().color();
    d->inactiveCaptionColor = d->inactiveGradientCaptionColor;
    d->inactiveCaptionText = palette.window().color();

#if defined(Q_OS_WIN) && !defined(Q_OS_WINRT) //fetch native title bar colors
    if(app->desktopSettingsAware()){
        DWORD activeCaption = GetSysColor(COLOR_ACTIVECAPTION);
        DWORD gradientActiveCaption = GetSysColor(COLOR_GRADIENTACTIVECAPTION);
        DWORD inactiveCaption = GetSysColor(COLOR_INACTIVECAPTION);
        DWORD gradientInactiveCaption = GetSysColor(COLOR_GRADIENTINACTIVECAPTION);
        DWORD inactiveCaptionText = GetSysColor(COLOR_INACTIVECAPTIONTEXT);
        d->activeCaptionColor = colorref2qrgb(activeCaption);
        d->activeGradientCaptionColor = colorref2qrgb(gradientActiveCaption);
        d->inactiveCaptionColor = colorref2qrgb(inactiveCaption);
        d->inactiveGradientCaptionColor = colorref2qrgb(gradientInactiveCaption);
        d->inactiveCaptionText = colorref2qrgb(inactiveCaptionText);
    }
#endif
}

/*! \reimp */
void QWindowsStyle::unpolish(QApplication *app)
{
    QCommonStyle::unpolish(app);
    app->removeEventFilter(this);
}

/*! \reimp */
void QWindowsStyle::polish(QWidget *widget)
{
    QCommonStyle::polish(widget);
}

/*! \reimp */
void QWindowsStyle::unpolish(QWidget *widget)
{
    QCommonStyle::unpolish(widget);
}

/*!
  \reimp
*/
void QWindowsStyle::polish(QPalette &pal)
{
    QCommonStyle::polish(pal);
}

int QWindowsStylePrivate::pixelMetricFromSystemDp(QStyle::PixelMetric pm, const QStyleOption *, const QWidget *widget)
{
#if defined(Q_OS_WIN) && !defined(Q_OS_WINRT)
    switch (pm) {
    case QStyle::PM_DockWidgetFrameWidth:
        return GetSystemMetrics(SM_CXFRAME);

    case QStyle::PM_TitleBarHeight:
        if (widget && (widget->windowType() == Qt::Tool)) {
            // MS always use one less than they say
            return GetSystemMetrics(SM_CYSMCAPTION) - 1;
        }
        return GetSystemMetrics(SM_CYCAPTION) - 1;

    case QStyle::PM_ScrollBarExtent:
        {
            NONCLIENTMETRICS ncm;
            ncm.cbSize = FIELD_OFFSET(NONCLIENTMETRICS, lfMessageFont) + sizeof(LOGFONT);
            if (SystemParametersInfo(SPI_GETNONCLIENTMETRICS, sizeof(NONCLIENTMETRICS), &ncm, 0))
                return qMax(ncm.iScrollHeight, ncm.iScrollWidth);
        }
        break;

    case  QStyle::PM_MdiSubWindowFrameWidth:
        return GetSystemMetrics(SM_CYFRAME);

    default:
        break;
    }
#else // Q_OS_WIN && !Q_OS_WINRT
    Q_UNUSED(pm);
    Q_UNUSED(widget);
#endif
    return QWindowsStylePrivate::InvalidMetric;
}

int QWindowsStylePrivate::fixedPixelMetric(QStyle::PixelMetric pm)
{
    switch (pm) {
    case QStyle::PM_ToolBarItemSpacing:
        return 0;
    case QStyle::PM_ButtonDefaultIndicator:
    case QStyle::PM_ButtonShiftHorizontal:
    case QStyle::PM_ButtonShiftVertical:
    case QStyle::PM_MenuHMargin:
    case QStyle::PM_MenuVMargin:
    case QStyle::PM_ToolBarItemMargin:
        return 1;
    case QStyle::PM_DockWidgetSeparatorExtent:
        return 4;
#if QT_CONFIG(tabbar)
    case QStyle::PM_TabBarTabShiftHorizontal:
        return 0;
    case QStyle::PM_TabBarTabShiftVertical:
        return 2;
#endif

#if QT_CONFIG(slider)
    case QStyle::PM_SliderLength:
        return 11;
#endif // QT_CONFIG(slider)

#if QT_CONFIG(menu)
    case QStyle::PM_MenuBarHMargin:
    case QStyle::PM_MenuBarVMargin:
    case QStyle::PM_MenuBarPanelWidth:
        return 0;
    case QStyle::PM_SmallIconSize:
        return 16;
    case QStyle::PM_LargeIconSize:
        return 32;
    case QStyle::PM_DockWidgetTitleMargin:
        return 2;
    case QStyle::PM_DockWidgetTitleBarButtonMargin:
    case QStyle::PM_DockWidgetFrameWidth:
        return 4;

#endif // QT_CONFIG(menu)
    case QStyle::PM_ToolBarHandleExtent:
        return 10;
    default:
        break;
    }
    return QWindowsStylePrivate::InvalidMetric;
}

static QScreen *screenOf(const QWidget *w)
{
    if (w) {
        if (auto screen = qt_widget_private(const_cast<QWidget *>(w))->associatedScreen())
            return screen;
    }
    return QGuiApplication::primaryScreen();
}

// Calculate the overall scale factor to obtain Qt Device Independent
// Pixels from a native Windows size. Divide by devicePixelRatio
// and account for secondary screens with differing logical DPI.
qreal QWindowsStylePrivate::nativeMetricScaleFactor(const QWidget *widget)
{
    qreal result = qreal(1) / QWindowsStylePrivate::devicePixelRatio(widget);
    if (QGuiApplicationPrivate::screen_list.size() > 1) {
        const QScreen *primaryScreen = QGuiApplication::primaryScreen();
        const QScreen *screen = screenOf(widget);
        if (screen != primaryScreen) {
            const qreal primaryLogicalDpi = primaryScreen->handle()->logicalDpi().first;
            const qreal logicalDpi = screen->handle()->logicalDpi().first;
            if (!qFuzzyCompare(primaryLogicalDpi, logicalDpi))
                result *= logicalDpi / primaryLogicalDpi;
        }
    }
    return result;
}

/*!
  \reimp
*/
int QWindowsStyle::pixelMetric(PixelMetric pm, const QStyleOption *opt, const QWidget *widget) const
{
    int ret = QWindowsStylePrivate::pixelMetricFromSystemDp(pm, opt, widget);
    if (ret != QWindowsStylePrivate::InvalidMetric)
        return qRound(qreal(ret) * QWindowsStylePrivate::nativeMetricScaleFactor(widget));

    ret = QWindowsStylePrivate::fixedPixelMetric(pm);
    if (ret != QWindowsStylePrivate::InvalidMetric)
        return int(QStyleHelper::dpiScaled(ret, opt));

    ret = 0;

    switch (pm) {
    case PM_MaximumDragDistance:
        ret = QCommonStyle::pixelMetric(PM_MaximumDragDistance);
        if (ret == -1)
            ret = 60;
        break;

#if QT_CONFIG(slider)
        // Returns the number of pixels to use for the business part of the
        // slider (i.e., the non-tickmark portion). The remaining space is shared
        // equally between the tickmark regions.
    case PM_SliderControlThickness:
        if (const QStyleOptionSlider *sl = qstyleoption_cast<const QStyleOptionSlider *>(opt)) {
            int space = (sl->orientation == Qt::Horizontal) ? sl->rect.height() : sl->rect.width();
            int ticks = sl->tickPosition;
            int n = 0;
            if (ticks & QSlider::TicksAbove)
                ++n;
            if (ticks & QSlider::TicksBelow)
                ++n;
            if (!n) {
                ret = space;
                break;
            }

            int thick = 6;        // Magic constant to get 5 + 16 + 5
            if (ticks != QSlider::TicksBothSides && ticks != QSlider::NoTicks)
                thick += proxy()->pixelMetric(PM_SliderLength, sl, widget) / 4;

            space -= thick;
            if (space > 0)
                thick += (space * 2) / (n + 2);
            ret = thick;
        }
        break;
#endif // QT_CONFIG(slider)

    case PM_IconViewIconSize:
        ret = proxy()->pixelMetric(PM_LargeIconSize, opt, widget);
        break;

    case PM_SplitterWidth:
        ret = qMax(int(QStyleHelper::dpiScaled(4, opt)), QApplication::globalStrut().width());
        break;

    default:
        ret = QCommonStyle::pixelMetric(pm, opt, widget);
        break;
    }

    return ret;
}

/*!
 \reimp
 */
QPixmap QWindowsStyle::standardPixmap(StandardPixmap standardPixmap, const QStyleOption *opt,
                                      const QWidget *widget) const
{
#if defined(Q_OS_WIN) && !defined(Q_OS_WINRT)
    QPixmap desktopIcon;
    switch(standardPixmap) {
    case SP_DriveCDIcon:
    case SP_DriveDVDIcon:
    case SP_DriveNetIcon:
    case SP_DriveHDIcon:
    case SP_DriveFDIcon:
    case SP_FileIcon:
    case SP_FileLinkIcon:
    case SP_DirLinkIcon:
    case SP_DirClosedIcon:
    case SP_DesktopIcon:
    case SP_ComputerIcon:
    case SP_DirOpenIcon:
    case SP_FileDialogNewFolder:
    case SP_DirHomeIcon:
    case SP_TrashIcon:
    case SP_VistaShield:
        if (const QPlatformTheme *theme = QGuiApplicationPrivate::platformTheme()) {
            QPlatformTheme::StandardPixmap sp = static_cast<QPlatformTheme::StandardPixmap>(standardPixmap);
            desktopIcon = theme->standardPixmap(sp, QSizeF(16, 16));
        }
        break;
    case SP_MessageBoxInformation:
    case SP_MessageBoxWarning:
    case SP_MessageBoxCritical:
    case SP_MessageBoxQuestion:
        if (const QPlatformTheme *theme = QGuiApplicationPrivate::platformTheme()) {
            QPlatformTheme::StandardPixmap sp = static_cast<QPlatformTheme::StandardPixmap>(standardPixmap);
            desktopIcon = theme->standardPixmap(sp, QSizeF());
        }
        break;
    default:
        break;
    }
    if (!desktopIcon.isNull()) {
        return desktopIcon;
    }
#endif // Q_OS_WIN && !Q_OS_WINRT
    return QCommonStyle::standardPixmap(standardPixmap, opt, widget);
}

/*! \reimp */
int QWindowsStyle::styleHint(StyleHint hint, const QStyleOption *opt, const QWidget *widget,
                             QStyleHintReturn *returnData) const
{
    int ret = 0;

    switch (hint) {
    case SH_EtchDisabledText:
    case SH_Slider_SnapToValue:
    case SH_PrintDialog_RightAlignButtons:
    case SH_FontDialog_SelectAssociatedText:
    case SH_Menu_AllowActiveAndDisabled:
    case SH_MenuBar_AltKeyNavigation:
    case SH_MenuBar_MouseTracking:
    case SH_Menu_MouseTracking:
    case SH_ComboBox_ListMouseTracking:
    case SH_Slider_StopMouseOverSlider:
    case SH_MainWindow_SpaceBelowMenuBar:
        ret = 1;

        break;
    case SH_ItemView_ShowDecorationSelected:
#if QT_CONFIG(listview)
        if (qobject_cast<const QListView*>(widget))
            ret = 1;
#endif
        break;
    case SH_ItemView_ChangeHighlightOnFocus:
        ret = 1;
        break;
    case SH_ToolBox_SelectedPageTitleBold:
        ret = 0;
        break;

#if defined(Q_OS_WIN) && !defined(Q_OS_WINRT) // Option not used on WinRT -> common style
    case SH_UnderlineShortcut:
    {
        ret = 1;
        BOOL cues = false;
        SystemParametersInfo(SPI_GETKEYBOARDCUES, 0, &cues, 0);
        ret = int(cues);
        // Do nothing if we always paint underlines
        Q_D(const QWindowsStyle);
        if (!ret && widget && d) {
#if QT_CONFIG(menubar)
            const QMenuBar *menuBar = qobject_cast<const QMenuBar *>(widget);
            if (!menuBar && qobject_cast<const QMenu *>(widget)) {
                QWidget *w = QApplication::activeWindow();
                if (w && w != widget)
                    menuBar = w->findChild<QMenuBar *>();
            }
            // If we paint a menu bar draw underlines if is in the keyboardState
            if (menuBar) {
                if (menuBar->d_func()->keyboardState || d->altDown())
                    ret = 1;
                // Otherwise draw underlines if the toplevel widget has seen an alt-press
            } else
#endif // QT_CONFIG(menubar)
            if (d->hasSeenAlt(widget)) {
                ret = 1;
            }
        }
#ifndef QT_NO_ACCESSIBILITY
        if (!ret && opt && opt->type == QStyleOption::SO_MenuItem
            && QStyleHelper::isInstanceOf(opt->styleObject, QAccessible::MenuItem)
            && opt->styleObject->property("_q_showUnderlined").toBool())
            ret = 1;
#endif // QT_NO_ACCESSIBILITY
        break;
    }
#endif // Q_OS_WIN && !Q_OS_WINRT
    case SH_Menu_SubMenuSloppyCloseTimeout:
    case SH_Menu_SubMenuPopupDelay: {
#if defined(Q_OS_WIN) && !defined(Q_OS_WINRT)
        DWORD delay;
        if (SystemParametersInfo(SPI_GETMENUSHOWDELAY, 0, &delay, 0))
            ret = delay;
        else
#endif // Q_OS_WIN && !Q_OS_WINRT
            ret = 400;
        break;
    }
#if QT_CONFIG(rubberband)
    case SH_RubberBand_Mask:
        if (const QStyleOptionRubberBand *rbOpt = qstyleoption_cast<const QStyleOptionRubberBand *>(opt)) {
            ret = 0;
            if (rbOpt->shape == QRubberBand::Rectangle) {
                ret = true;
                if(QStyleHintReturnMask *mask = qstyleoption_cast<QStyleHintReturnMask*>(returnData)) {
                    mask->region = opt->rect;
                    int size = 1;
                    if (widget && widget->isWindow())
                        size = 4;
                    mask->region -= opt->rect.adjusted(size, size, -size, -size);
                }
            }
        }
        break;
#endif // QT_CONFIG(rubberband)
#if QT_CONFIG(wizard)
    case SH_WizardStyle:
        ret = QWizard::ModernStyle;
        break;
#endif
    case SH_ItemView_ArrowKeysNavigateIntoChildren:
        ret = true;
        break;
    case SH_DialogButtonBox_ButtonsHaveIcons:
        ret = 0;
        break;
    default:
        ret = QCommonStyle::styleHint(hint, opt, widget, returnData);
        break;
    }
    return ret;
}

/*! \reimp */
void QWindowsStyle::drawPrimitive(PrimitiveElement pe, const QStyleOption *opt, QPainter *p,
                                  const QWidget *w) const
{
    // Used to restore across fallthrough cases. Currently only used in PE_IndicatorCheckBox
    bool doRestore = false;

    switch (pe) {
#if QT_CONFIG(toolbar)
  case PE_IndicatorToolBarSeparator:
        {
            QRect rect = opt->rect;
            const int margin = 2;
            QPen oldPen = p->pen();
            if(opt->state & State_Horizontal){
                const int offset = rect.width()/2;
                p->setPen(QPen(opt->palette.dark().color()));
                p->drawLine(rect.bottomLeft().x() + offset,
                            rect.bottomLeft().y() - margin,
                            rect.topLeft().x() + offset,
                            rect.topLeft().y() + margin);
                p->setPen(QPen(opt->palette.light().color()));
                p->drawLine(rect.bottomLeft().x() + offset + 1,
                            rect.bottomLeft().y() - margin,
                            rect.topLeft().x() + offset + 1,
                            rect.topLeft().y() + margin);
            }
            else{ //Draw vertical separator
                const int offset = rect.height()/2;
                p->setPen(QPen(opt->palette.dark().color()));
                p->drawLine(rect.topLeft().x() + margin ,
                            rect.topLeft().y() + offset,
                            rect.topRight().x() - margin,
                            rect.topRight().y() + offset);
                p->setPen(QPen(opt->palette.light().color()));
                p->drawLine(rect.topLeft().x() + margin ,
                            rect.topLeft().y() + offset + 1,
                            rect.topRight().x() - margin,
                            rect.topRight().y() + offset + 1);
            }
            p->setPen(oldPen);
        }
        break;
    case PE_IndicatorToolBarHandle:
        p->save();
        p->translate(opt->rect.x(), opt->rect.y());
        if (opt->state & State_Horizontal) {
            int x = opt->rect.width() / 2 - 4;
            if (opt->direction == Qt::RightToLeft)
                x -= 2;
            if (opt->rect.height() > 4) {
                qDrawShadePanel(p, x, 2, 3, opt->rect.height() - 4,
                                opt->palette, false, 1, nullptr);
                qDrawShadePanel(p, x + 3, 2, 3, opt->rect.height() - 4,
                                opt->palette, false, 1, nullptr);
            }
        } else {
            if (opt->rect.width() > 4) {
                int y = opt->rect.height() / 2 - 4;
                qDrawShadePanel(p, 2, y, opt->rect.width() - 4, 3,
                                opt->palette, false, 1, nullptr);
                qDrawShadePanel(p, 2, y + 3, opt->rect.width() - 4, 3,
                                opt->palette, false, 1, nullptr);
            }
        }
        p->restore();
        break;

#endif // QT_CONFIG(toolbar)
    case PE_FrameButtonTool:
    case PE_PanelButtonTool: {
        QPen oldPen = p->pen();
#if QT_CONFIG(dockwidget)
        if (w && w->inherits("QDockWidgetTitleButton")) {
           if (const QWidget *dw = w->parentWidget())
                if (dw->isWindow()){
                    qDrawWinButton(p, opt->rect.adjusted(1, 1, 0, 0), opt->palette, opt->state & (State_Sunken | State_On),
                           &opt->palette.button());

                    return;
                }
        }
#endif // QT_CONFIG(dockwidget)
        QBrush fill;
        bool stippled;
        bool panel = (pe == PE_PanelButtonTool);
        if ((!(opt->state & State_Sunken ))
            && (!(opt->state & State_Enabled)
                || !(opt->state & State_MouseOver && opt->state & State_AutoRaise))
            && (opt->state & State_On)) {
            fill = QBrush(opt->palette.light().color(), Qt::Dense4Pattern);
            stippled = true;
        } else {
            fill = opt->palette.brush(QPalette::Button);
            stippled = false;
        }

        if (opt->state & (State_Raised | State_Sunken | State_On)) {
            if (opt->state & State_AutoRaise) {
                if(opt->state & (State_Enabled | State_Sunken | State_On)){
                    if (panel)
                        qDrawShadePanel(p, opt->rect, opt->palette,
                                        opt->state & (State_Sunken | State_On), 1, &fill);
                    else
                        qDrawShadeRect(p, opt->rect, opt->palette,
                                       opt->state & (State_Sunken | State_On), 1);
                }
                if (stippled) {
                    p->setPen(opt->palette.button().color());
                    p->drawRect(opt->rect.adjusted(1,1,-2,-2));
                }
            } else {
                qDrawWinButton(p, opt->rect, opt->palette,
                               opt->state & (State_Sunken | State_On), panel ? &fill : nullptr);
            }
        } else {
            p->fillRect(opt->rect, fill);
        }
        p->setPen(oldPen);
        break; }
    case PE_PanelButtonCommand:
        if (const QStyleOptionButton *btn = qstyleoption_cast<const QStyleOptionButton *>(opt)) {
            QBrush fill;
            State flags = opt->state;
            QPalette pal = opt->palette;
            QRect r = opt->rect;
            if (! (flags & State_Sunken) && (flags & State_On))
                fill = QBrush(pal.light().color(), Qt::Dense4Pattern);
            else
                fill = pal.brush(QPalette::Button);

            if (btn->features & QStyleOptionButton::DefaultButton && flags & State_Sunken) {
                p->setPen(pal.dark().color());
                p->setBrush(fill);
                p->drawRect(r.adjusted(0, 0, -1, -1));
            } else if (flags & (State_Raised | State_On | State_Sunken)) {
                qDrawWinButton(p, r, pal, flags & (State_Sunken | State_On),
                               &fill);
            } else {
                p->fillRect(r, fill);
            }
        }
        break;
    case PE_FrameDefaultButton: {
        QPen oldPen = p->pen();
        p->setPen(QPen(opt->palette.shadow().color(), 0));
        QRectF rect = opt->rect;
        const qreal dpi = QStyleHelper::dpi(opt);
        const qreal topLevelAdjustment = QStyleHelper::dpiScaled(0.5, dpi);
        const qreal bottomRightAdjustment = QStyleHelper::dpiScaled(-1.5, dpi);
        rect.adjust(topLevelAdjustment, topLevelAdjustment,
                    bottomRightAdjustment, bottomRightAdjustment);
        p->drawRect(rect);
        p->setPen(oldPen);
        break;
    }
    case PE_IndicatorCheckBox: {
        QBrush fill;
        if (opt->state & State_NoChange)
            fill = QBrush(opt->palette.base().color(), Qt::Dense4Pattern);
        else if (opt->state & State_Sunken)
            fill = opt->palette.button();
        else if (opt->state & State_Enabled)
            fill = opt->palette.base();
        else
            fill = opt->palette.window();
        p->save();
        doRestore = true;
        qDrawWinPanel(p, opt->rect, opt->palette, true, &fill);
        if (opt->state & State_NoChange)
            p->setPen(opt->palette.dark().color());
        else
            p->setPen(opt->palette.text().color());
        }
        Q_FALLTHROUGH();
    case PE_IndicatorItemViewItemCheck:
        if (!doRestore) {
            p->save();
            doRestore = true;
        }
#if QT_CONFIG(itemviews)
        if (pe == PE_IndicatorItemViewItemCheck) {
            const QStyleOptionViewItem *itemViewOpt = qstyleoption_cast<const QStyleOptionViewItem *>(opt);
            p->setPen(itemViewOpt
                      && itemViewOpt->showDecorationSelected
                      && opt->state & State_Selected
                        ? opt->palette.highlightedText().color()
                        : opt->palette.text().color());
            if (opt->state & State_NoChange)
                p->setBrush(opt->palette.brush(QPalette::Button));
            p->drawRect(opt->rect.x() + 1, opt->rect.y() + 1, opt->rect.width() - 2, opt->rect.height() - 2);
        }
#endif // QT_CONFIG(itemviews)
        if (!(opt->state & State_Off)) {
            QPointF  points[6];
            qreal scaleh = opt->rect.width() / 12.0;
            qreal scalev = opt->rect.height() / 12.0;
            points[0] = { opt->rect.x() + 3.5 * scaleh, opt->rect.y() + 5.5 * scalev };
            points[1] = { points[0].x(),                points[0].y() + 2 * scalev };
            points[2] = { points[1].x() + 2 * scaleh,   points[1].y() + 2 * scalev };
            points[3] = { points[2].x() + 4 * scaleh,   points[2].y() - 4 * scalev };
            points[4] = { points[3].x(),                points[3].y() - 2 * scalev };
            points[5] = { points[4].x() - 4 * scaleh,   points[4].y() + 4 * scalev };
            p->setPen(QPen(opt->palette.text().color(), 0));
            p->setBrush(opt->palette.text().color());
            p->drawPolygon(points, 6);
        }
        if (doRestore)
            p->restore();
        break;
    case PE_FrameFocusRect:
        if (const QStyleOptionFocusRect *fropt = qstyleoption_cast<const QStyleOptionFocusRect *>(opt)) {
            //### check for d->alt_down
            if (!(fropt->state & State_KeyboardFocusChange) && !proxy()->styleHint(SH_UnderlineShortcut, opt))
                return;
            QRect r = opt->rect;
            p->save();
            p->setBackgroundMode(Qt::TransparentMode);
            QColor bg_col = fropt->backgroundColor;
            if (!bg_col.isValid())
                bg_col = p->background().color();
            // Create an "XOR" color.
            QColor patternCol((bg_col.red() ^ 0xff) & 0xff,
                              (bg_col.green() ^ 0xff) & 0xff,
                              (bg_col.blue() ^ 0xff) & 0xff);
            p->setBrush(QBrush(patternCol, Qt::Dense4Pattern));
            p->setBrushOrigin(r.topLeft());
            p->setPen(Qt::NoPen);
            p->drawRect(r.left(), r.top(), r.width(), 1);    // Top
            p->drawRect(r.left(), r.bottom(), r.width(), 1); // Bottom
            p->drawRect(r.left(), r.top(), 1, r.height());   // Left
            p->drawRect(r.right(), r.top(), 1, r.height());  // Right
            p->restore();
        }
        break;
    case PE_IndicatorRadioButton:
        {
            QRect r = opt->rect;
            p->save();
            p->setRenderHint(QPainter::Antialiasing, true);

            QPointF circleCenter = r.center() + QPoint(1, 1);
            qreal radius = (r.width() + (r.width() + 1) % 2) / 2.0 - 1;

            QPainterPath path1;
            path1.addEllipse(circleCenter, radius, radius);
            radius *= 0.85;
            QPainterPath path2;
            path2.addEllipse(circleCenter, radius, radius);
            radius *= 0.85;
            QPainterPath path3;
            path3.addEllipse(circleCenter, radius, radius);
            radius *= 0.5;
            QPainterPath path4;
            path4.addEllipse(circleCenter, radius, radius);

            QPolygon topLeftPol, bottomRightPol;
            topLeftPol.setPoints(3, r.x(), r.y(), r.x(), r.y() + r.height(), r.x() + r.width(), r.y());
            bottomRightPol.setPoints(3, r.x(), r.y() + r.height(), r.x() + r.width(), r.y() + r.height(), r.x() + r.width(), r.y());

            p->setClipRegion(QRegion(topLeftPol));
            p->setPen(opt->palette.dark().color());
            p->setBrush(opt->palette.dark().color());
            p->drawPath(path1);
            p->setPen(opt->palette.shadow().color());
            p->setBrush(opt->palette.shadow().color());
            p->drawPath(path2);

            p->setClipRegion(QRegion(bottomRightPol));
            p->setPen(opt->palette.light().color());
            p->setBrush(opt->palette.light().color());
            p->drawPath(path1);
            p->setPen(opt->palette.midlight().color());
            p->setBrush(opt->palette.midlight().color());
            p->drawPath(path2);

            QColor fillColor = ((opt->state & State_Sunken) || !(opt->state & State_Enabled)) ?
                                opt->palette.button().color() : opt->palette.base().color();

            p->setClipping(false);
            p->setPen(fillColor);
            p->setBrush(fillColor);
            p->drawPath(path3);

            if (opt->state & State_On) {
                p->setPen(opt->palette.text().color());
                p->setBrush(opt->palette.text());
                p->drawPath(path4);
            }
            p->restore();
            break;
        }
#ifndef QT_NO_FRAME
    case PE_Frame:
    case PE_FrameMenu:
        if (const QStyleOptionFrame *frame = qstyleoption_cast<const QStyleOptionFrame *>(opt)) {
            if (frame->lineWidth == 2 || pe == PE_Frame) {
                QPalette popupPal = frame->palette;
                if (pe == PE_FrameMenu) {
                    popupPal.setColor(QPalette::Light, frame->palette.window().color());
                    popupPal.setColor(QPalette::Midlight, frame->palette.light().color());
                }
                if (pe == PE_Frame && (frame->state & State_Raised))
                    qDrawWinButton(p, frame->rect, popupPal, frame->state & State_Sunken);
                else if (pe == PE_Frame && (frame->state & State_Sunken))
                {
                    popupPal.setColor(QPalette::Midlight, frame->palette.window().color());
                    qDrawWinPanel(p, frame->rect, popupPal, frame->state & State_Sunken);
                }
                else
                    qDrawWinPanel(p, frame->rect, popupPal, frame->state & State_Sunken);
            } else {
                QCommonStyle::drawPrimitive(pe, opt, p, w);
            }
        } else {
            QPalette popupPal = opt->palette;
            popupPal.setColor(QPalette::Light, opt->palette.window().color());
            popupPal.setColor(QPalette::Midlight, opt->palette.light().color());
            qDrawWinPanel(p, opt->rect, popupPal, opt->state & State_Sunken);
        }
        break;
#endif // QT_NO_FRAME
    case PE_FrameButtonBevel:
    case PE_PanelButtonBevel: {
        QBrush fill;
        bool panel = pe != PE_FrameButtonBevel;
        p->setBrushOrigin(opt->rect.topLeft());
        if (!(opt->state & State_Sunken) && (opt->state & State_On))
            fill = QBrush(opt->palette.light().color(), Qt::Dense4Pattern);
        else
            fill = opt->palette.brush(QPalette::Button);

        if (opt->state & (State_Raised | State_On | State_Sunken)) {
            qDrawWinButton(p, opt->rect, opt->palette, opt->state & (State_Sunken | State_On),
                           panel ? &fill : nullptr);
        } else {
            if (panel)
                p->fillRect(opt->rect, fill);
            else
                p->drawRect(opt->rect);
        }
        break; }
    case PE_FrameWindow: {
         QPalette popupPal = opt->palette;
         popupPal.setColor(QPalette::Light, opt->palette.window().color());
         popupPal.setColor(QPalette::Midlight, opt->palette.light().color());
         qDrawWinPanel(p, opt->rect, popupPal, opt->state & State_Sunken);
        break; }
#if QT_CONFIG(dockwidget)
    case PE_IndicatorDockWidgetResizeHandle:
        break;
    case PE_FrameDockWidget:
        if (qstyleoption_cast<const QStyleOptionFrame *>(opt)) {
            proxy()->drawPrimitive(QStyle::PE_FrameWindow, opt, p, w);
        }
    break;
#endif // QT_CONFIG(dockwidget)

    case PE_FrameStatusBarItem:
        qDrawShadePanel(p, opt->rect, opt->palette, true, 1, nullptr);
        break;

    case PE_IndicatorProgressChunk:
        {
            bool vertical = false, inverted = false;
            if (const QStyleOptionProgressBar *pb = qstyleoption_cast<const QStyleOptionProgressBar *>(opt)) {
                vertical = pb->orientation == Qt::Vertical;
                inverted = pb->invertedAppearance;
            }

            int space = 2;
            int chunksize = proxy()->pixelMetric(PM_ProgressBarChunkWidth, opt, w) - space;
            if (!vertical) {
                if (opt->rect.width() <= chunksize)
                    space = 0;

                if (inverted)
                    p->fillRect(opt->rect.x() + space, opt->rect.y(), opt->rect.width() - space, opt->rect.height(),
                            opt->palette.brush(QPalette::Highlight));
                else
                    p->fillRect(opt->rect.x(), opt->rect.y(), opt->rect.width() - space, opt->rect.height(),
                                opt->palette.brush(QPalette::Highlight));
            } else {
                if (opt->rect.height() <= chunksize)
                    space = 0;

                if (inverted)
                    p->fillRect(opt->rect.x(), opt->rect.y(), opt->rect.width(), opt->rect.height() - space,
                            opt->palette.brush(QPalette::Highlight));
                else
                    p->fillRect(opt->rect.x(), opt->rect.y() + space, opt->rect.width(), opt->rect.height() - space,
                                opt->palette.brush(QPalette::Highlight));
            }
        }
        break;

    case PE_FrameTabWidget: {
        qDrawWinButton(p, opt->rect, opt->palette, false, nullptr);
        break;
    }
    default:
        QCommonStyle::drawPrimitive(pe, opt, p, w);
    }
}

/*! \reimp */
void QWindowsStyle::drawControl(ControlElement ce, const QStyleOption *opt, QPainter *p,
                                const QWidget *widget) const
{
    switch (ce) {
#if QT_CONFIG(rubberband)
    case CE_RubberBand:
        if (qstyleoption_cast<const QStyleOptionRubberBand *>(opt)) {
            // ### workaround for slow general painter path
            QPixmap tiledPixmap(16, 16);
            QPainter pixmapPainter(&tiledPixmap);
            pixmapPainter.setPen(Qt::NoPen);
            pixmapPainter.setBrush(Qt::Dense4Pattern);
            pixmapPainter.setBackground(Qt::white);
            pixmapPainter.setBackgroundMode(Qt::OpaqueMode);
            pixmapPainter.drawRect(0, 0, tiledPixmap.width(), tiledPixmap.height());
            pixmapPainter.end();
            tiledPixmap = QPixmap::fromImage(tiledPixmap.toImage());
            p->save();
            QRect r = opt->rect;
            QStyleHintReturnMask mask;
            if (proxy()->styleHint(QStyle::SH_RubberBand_Mask, opt, widget, &mask))
                p->setClipRegion(mask.region);
            p->drawTiledPixmap(r.x(), r.y(), r.width(), r.height(), tiledPixmap);
            p->restore();
            return;
        }
        break;
#endif // QT_CONFIG(rubberband)

#if QT_CONFIG(menu) && QT_CONFIG(mainwindow)
    case CE_MenuBarEmptyArea:
        if (widget && qobject_cast<const QMainWindow *>(widget->parentWidget())) {
            p->fillRect(opt->rect, opt->palette.button());
            QPen oldPen = p->pen();
            p->setPen(QPen(opt->palette.dark().color()));
            p->drawLine(opt->rect.bottomLeft(), opt->rect.bottomRight());
            p->setPen(oldPen);
        }
        break;
#endif
#if QT_CONFIG(menu)
    case CE_MenuItem:
        if (const QStyleOptionMenuItem *menuitem = qstyleoption_cast<const QStyleOptionMenuItem *>(opt)) {
            int x, y, w, h;
            menuitem->rect.getRect(&x, &y, &w, &h);
            int tab = menuitem->tabWidth;
            bool dis = !(menuitem->state & State_Enabled);
            bool checked = menuitem->checkType != QStyleOptionMenuItem::NotCheckable
                            ? menuitem->checked : false;
            bool act = menuitem->state & State_Selected;

            // windows always has a check column, regardless whether we have an icon or not
            int checkcol = qMax<int>(menuitem->maxIconWidth, QWindowsStylePrivate::windowsCheckMarkWidth);

            QBrush fill = menuitem->palette.brush(act ? QPalette::Highlight : QPalette::Button);
            p->fillRect(menuitem->rect.adjusted(0, 0, -1, 0), fill);

            if (menuitem->menuItemType == QStyleOptionMenuItem::Separator){
                int yoff = y-1 + h / 2;
                p->setPen(menuitem->palette.dark().color());
                p->drawLine(x + 2, yoff, x + w - 4, yoff);
                p->setPen(menuitem->palette.light().color());
                p->drawLine(x + 2, yoff + 1, x + w - 4, yoff + 1);
                return;
            }

            QRect vCheckRect = visualRect(opt->direction, menuitem->rect, QRect(menuitem->rect.x(), menuitem->rect.y(), checkcol, menuitem->rect.height()));
            if (!menuitem->icon.isNull() && checked) {
                if (act) {
                    qDrawShadePanel(p, vCheckRect,
                                    menuitem->palette, true, 1,
                                    &menuitem->palette.brush(QPalette::Button));
                } else {
                    QBrush fill(menuitem->palette.light().color(), Qt::Dense4Pattern);
                    qDrawShadePanel(p, vCheckRect, menuitem->palette, true, 1, &fill);
                }
            } else if (!act) {
                p->fillRect(vCheckRect, menuitem->palette.brush(QPalette::Button));
            }

            // On Windows Style, if we have a checkable item and an icon we
            // draw the icon recessed to indicate an item is checked. If we
            // have no icon, we draw a checkmark instead.
            if (!menuitem->icon.isNull()) {
                QIcon::Mode mode = dis ? QIcon::Disabled : QIcon::Normal;
                if (act && !dis)
                    mode = QIcon::Active;
                QPixmap pixmap;
                if (checked)
                    pixmap = menuitem->icon.pixmap(proxy()->pixelMetric(PM_SmallIconSize, opt, widget), mode, QIcon::On);
                else
                    pixmap = menuitem->icon.pixmap(proxy()->pixelMetric(PM_SmallIconSize, opt, widget), mode);
                const int pixw = pixmap.width() / pixmap.devicePixelRatio();
                const int pixh = pixmap.height() / pixmap.devicePixelRatio();
                QRect pmr(0, 0, pixw, pixh);
                pmr.moveCenter(vCheckRect.center());
                p->setPen(menuitem->palette.text().color());
                p->drawPixmap(pmr.topLeft(), pixmap);
            } else if (checked) {
                QStyleOptionMenuItem newMi = *menuitem;
                newMi.state = State_None;
                if (!dis)
                    newMi.state |= State_Enabled;
                if (act)
                    newMi.state |= State_On;
                newMi.rect = visualRect(opt->direction, menuitem->rect, QRect(menuitem->rect.x() + QWindowsStylePrivate::windowsItemFrame,
                                                                              menuitem->rect.y() + QWindowsStylePrivate::windowsItemFrame,
                                                                              checkcol - 2 * QWindowsStylePrivate::windowsItemFrame,
                                                                              menuitem->rect.height() - 2 * QWindowsStylePrivate::windowsItemFrame));
                proxy()->drawPrimitive(PE_IndicatorMenuCheckMark, &newMi, p, widget);
            }
            p->setPen(act ? menuitem->palette.highlightedText().color() : menuitem->palette.buttonText().color());

            QColor discol;
            if (dis) {
                discol = menuitem->palette.text().color();
                p->setPen(discol);
            }

            int xm = int(QWindowsStylePrivate::windowsItemFrame) + checkcol + int(QWindowsStylePrivate::windowsItemHMargin);
            int xpos = menuitem->rect.x() + xm;
            QRect textRect(xpos, y + QWindowsStylePrivate::windowsItemVMargin,
                           w - xm - QWindowsStylePrivate::windowsRightBorder - tab + 1, h - 2 * QWindowsStylePrivate::windowsItemVMargin);
            QRect vTextRect = visualRect(opt->direction, menuitem->rect, textRect);
            QStringRef s(&menuitem->text);
            if (!s.isEmpty()) {                     // draw text
                p->save();
                int t = s.indexOf(QLatin1Char('\t'));
                int text_flags = Qt::AlignVCenter | Qt::TextShowMnemonic | Qt::TextDontClip | Qt::TextSingleLine;
                if (!proxy()->styleHint(SH_UnderlineShortcut, menuitem, widget))
                    text_flags |= Qt::TextHideMnemonic;
                text_flags |= Qt::AlignLeft;
                if (t >= 0) {
                    QRect vShortcutRect = visualRect(opt->direction, menuitem->rect,
                        QRect(textRect.topRight(), QPoint(menuitem->rect.right(), textRect.bottom())));
                    const QString textToDraw = s.mid(t + 1).toString();
                    if (dis && !act && proxy()->styleHint(SH_EtchDisabledText, opt, widget)) {
                        p->setPen(menuitem->palette.light().color());
                        p->drawText(vShortcutRect.adjusted(1, 1, 1, 1), text_flags, textToDraw);
                        p->setPen(discol);
                    }
                    p->drawText(vShortcutRect, text_flags, textToDraw);
                    s = s.left(t);
                }
                QFont font = menuitem->font;
                if (menuitem->menuItemType == QStyleOptionMenuItem::DefaultItem)
                    font.setBold(true);
                p->setFont(font);
                const QString textToDraw = s.left(t).toString();
                if (dis && !act && proxy()->styleHint(SH_EtchDisabledText, opt, widget)) {
                    p->setPen(menuitem->palette.light().color());
                    p->drawText(vTextRect.adjusted(1, 1, 1, 1), text_flags, textToDraw);
                    p->setPen(discol);
                }
                p->drawText(vTextRect, text_flags, textToDraw);
                p->restore();
            }
            if (menuitem->menuItemType == QStyleOptionMenuItem::SubMenu) {// draw sub menu arrow
                int dim = (h - 2 * QWindowsStylePrivate::windowsItemFrame) / 2;
                PrimitiveElement arrow;
                arrow = (opt->direction == Qt::RightToLeft) ? PE_IndicatorArrowLeft : PE_IndicatorArrowRight;
                xpos = x + w - QWindowsStylePrivate::windowsArrowHMargin - QWindowsStylePrivate::windowsItemFrame - dim;
                QRect  vSubMenuRect = visualRect(opt->direction, menuitem->rect, QRect(xpos, y + h / 2 - dim / 2, dim, dim));
                QStyleOptionMenuItem newMI = *menuitem;
                newMI.rect = vSubMenuRect;
                newMI.state = dis ? State_None : State_Enabled;
                if (act)
                    newMI.palette.setColor(QPalette::ButtonText,
                                           newMI.palette.highlightedText().color());
                proxy()->drawPrimitive(arrow, &newMI, p, widget);
            }

        }
        break;
#endif // QT_CONFIG(menu)
#if QT_CONFIG(menubar)
    case CE_MenuBarItem:
        if (const QStyleOptionMenuItem *mbi = qstyleoption_cast<const QStyleOptionMenuItem *>(opt)) {
            bool active = mbi->state & State_Selected;
            bool hasFocus = mbi->state & State_HasFocus;
            bool down = mbi->state & State_Sunken;
            QStyleOptionMenuItem newMbi = *mbi;
            p->fillRect(mbi->rect, mbi->palette.brush(QPalette::Button));
            if (active || hasFocus) {
                QBrush b = mbi->palette.brush(QPalette::Button);
                if (active && down)
                    p->setBrushOrigin(p->brushOrigin() + QPoint(1, 1));
                if (active && hasFocus)
                    qDrawShadeRect(p, mbi->rect.x(), mbi->rect.y(), mbi->rect.width(),
                                   mbi->rect.height(), mbi->palette, active && down, 1, 0, &b);
                if (active && down) {
                    newMbi.rect.translate(proxy()->pixelMetric(PM_ButtonShiftHorizontal, mbi, widget),
                                       proxy()->pixelMetric(PM_ButtonShiftVertical, mbi, widget));
                    p->setBrushOrigin(p->brushOrigin() - QPoint(1, 1));
                }
            }
            QCommonStyle::drawControl(ce, &newMbi, p, widget);
        }
        break;
#endif // QT_CONFIG(menubar)
#if QT_CONFIG(tabbar)
    case CE_TabBarTabShape:
        if (const QStyleOptionTab *tab = qstyleoption_cast<const QStyleOptionTab *>(opt)) {
            bool rtlHorTabs = (tab->direction == Qt::RightToLeft
                               && (tab->shape == QTabBar::RoundedNorth
                                   || tab->shape == QTabBar::RoundedSouth));
            bool selected = tab->state & State_Selected;
            bool lastTab = ((!rtlHorTabs && tab->position == QStyleOptionTab::End)
                            || (rtlHorTabs
                                && tab->position == QStyleOptionTab::Beginning));
            bool firstTab = ((!rtlHorTabs
                               && tab->position == QStyleOptionTab::Beginning)
                             || (rtlHorTabs
                                 && tab->position == QStyleOptionTab::End));
            bool onlyOne = tab->position == QStyleOptionTab::OnlyOneTab;
            bool previousSelected =
                ((!rtlHorTabs
                  && tab->selectedPosition == QStyleOptionTab::PreviousIsSelected)
                || (rtlHorTabs
                    && tab->selectedPosition == QStyleOptionTab::NextIsSelected));
            bool nextSelected =
                ((!rtlHorTabs
                  && tab->selectedPosition == QStyleOptionTab::NextIsSelected)
                 || (rtlHorTabs
                     && tab->selectedPosition
                            == QStyleOptionTab::PreviousIsSelected));
            int tabBarAlignment = proxy()->styleHint(SH_TabBar_Alignment, tab, widget);
            bool leftAligned = (!rtlHorTabs && tabBarAlignment == Qt::AlignLeft)
                                || (rtlHorTabs
                                    && tabBarAlignment == Qt::AlignRight);

            bool rightAligned = (!rtlHorTabs && tabBarAlignment == Qt::AlignRight)
                                 || (rtlHorTabs
                                         && tabBarAlignment == Qt::AlignLeft);

            QColor light = tab->palette.light().color();
            QColor dark = tab->palette.dark().color();
            QColor shadow = tab->palette.shadow().color();
            int borderThinkness = proxy()->pixelMetric(PM_TabBarBaseOverlap, tab, widget);
            if (selected)
                borderThinkness /= 2;
            QRect r2(opt->rect);
            int x1 = r2.left();
            int x2 = r2.right();
            int y1 = r2.top();
            int y2 = r2.bottom();
            switch (tab->shape) {
            default:
                QCommonStyle::drawControl(ce, tab, p, widget);
                break;
            case QTabBar::RoundedNorth: {
                if (!selected) {
                    y1 += 2;
                    x1 += onlyOne || firstTab ? borderThinkness : 0;
                    x2 -= onlyOne || lastTab ? borderThinkness : 0;
                }

                p->fillRect(QRect(x1 + 1, y1 + 1, (x2 - x1) - 1, (y2 - y1) - 2), tab->palette.window());

                // Delete border
                if (selected) {
                    p->fillRect(QRect(x1,y2-1,x2-x1,1), tab->palette.window());
                    p->fillRect(QRect(x1,y2,x2-x1,1), tab->palette.window());
                }
                // Left
                if (firstTab || selected || onlyOne || !previousSelected) {
                    p->setPen(light);
                    p->drawLine(x1, y1 + 2, x1, y2 - ((onlyOne || firstTab) && selected && leftAligned ? 0 : borderThinkness));
                    p->drawPoint(x1 + 1, y1 + 1);
                }
                // Top
                {
                    int beg = x1 + (previousSelected ? 0 : 2);
                    int end = x2 - (nextSelected ? 0 : 2);
                    p->setPen(light);
                    p->drawLine(beg, y1, end, y1);
                }
                // Right
                if (lastTab || selected || onlyOne || !nextSelected) {
                    p->setPen(shadow);
                    p->drawLine(x2, y1 + 2, x2, y2 - ((onlyOne || lastTab) && selected && rightAligned ? 0 : borderThinkness));
                    p->drawPoint(x2 - 1, y1 + 1);
                    p->setPen(dark);
                    p->drawLine(x2 - 1, y1 + 2, x2 - 1, y2 - ((onlyOne || lastTab) && selected && rightAligned ? 0 : borderThinkness));
                }
                break; }
            case QTabBar::RoundedSouth: {
                if (!selected) {
                    y2 -= 2;
                    x1 += firstTab ? borderThinkness : 0;
                    x2 -= lastTab ? borderThinkness : 0;
                }

                p->fillRect(QRect(x1 + 1, y1 + 2, (x2 - x1) - 1, (y2 - y1) - 1), tab->palette.window());

                // Delete border
                if (selected) {
                    p->fillRect(QRect(x1, y1 + 1, (x2 - 1)-x1, 1), tab->palette.window());
                    p->fillRect(QRect(x1, y1, (x2 - 1)-x1, 1), tab->palette.window());
                }
                // Left
                if (firstTab || selected || onlyOne || !previousSelected) {
                    p->setPen(light);
                    p->drawLine(x1, y2 - 2, x1, y1 + ((onlyOne || firstTab) && selected && leftAligned ? 0 : borderThinkness));
                    p->drawPoint(x1 + 1, y2 - 1);
                }
                // Bottom
                {
                    int beg = x1 + (previousSelected ? 0 : 2);
                    int end = x2 - (nextSelected ? 0 : 2);
                    p->setPen(shadow);
                    p->drawLine(beg, y2, end, y2);
                    p->setPen(dark);
                    p->drawLine(beg, y2 - 1, end, y2 - 1);
                }
                // Right
                if (lastTab || selected || onlyOne || !nextSelected) {
                    p->setPen(shadow);
                    p->drawLine(x2, y2 - 2, x2, y1 + ((onlyOne || lastTab) && selected && rightAligned ? 0 : borderThinkness));
                    p->drawPoint(x2 - 1, y2 - 1);
                    p->setPen(dark);
                    p->drawLine(x2 - 1, y2 - 2, x2 - 1, y1 + ((onlyOne || lastTab) && selected && rightAligned ? 0 : borderThinkness));
                }
                break; }
            case QTabBar::RoundedWest: {
                if (!selected) {
                    x1 += 2;
                    y1 += firstTab ? borderThinkness : 0;
                    y2 -= lastTab ? borderThinkness : 0;
                }

                p->fillRect(QRect(x1 + 1, y1 + 1, (x2 - x1) - 2, (y2 - y1) - 1), tab->palette.window());

                // Delete border
                if (selected) {
                    p->fillRect(QRect(x2 - 1, y1, 1, y2-y1), tab->palette.window());
                    p->fillRect(QRect(x2, y1, 1, y2-y1), tab->palette.window());
                }
                // Top
                if (firstTab || selected || onlyOne || !previousSelected) {
                    p->setPen(light);
                    p->drawLine(x1 + 2, y1, x2 - ((onlyOne || firstTab) && selected && leftAligned ? 0 : borderThinkness), y1);
                    p->drawPoint(x1 + 1, y1 + 1);
                }
                // Left
                {
                    int beg = y1 + (previousSelected ? 0 : 2);
                    int end = y2 - (nextSelected ? 0 : 2);
                    p->setPen(light);
                    p->drawLine(x1, beg, x1, end);
                }
                // Bottom
                if (lastTab || selected || onlyOne || !nextSelected) {
                    p->setPen(shadow);
                    p->drawLine(x1 + 3, y2, x2 - ((onlyOne || lastTab) && selected && rightAligned ? 0 : borderThinkness), y2);
                    p->drawPoint(x1 + 2, y2 - 1);
                    p->setPen(dark);
                    p->drawLine(x1 + 3, y2 - 1, x2 - ((onlyOne || lastTab) && selected && rightAligned ? 0 : borderThinkness), y2 - 1);
                    p->drawPoint(x1 + 1, y2 - 1);
                    p->drawPoint(x1 + 2, y2);
                }
                break; }
            case QTabBar::RoundedEast: {
                if (!selected) {
                    x2 -= 2;
                    y1 += firstTab ? borderThinkness : 0;
                    y2 -= lastTab ? borderThinkness : 0;
                }

                p->fillRect(QRect(x1 + 2, y1 + 1, (x2 - x1) - 1, (y2 - y1) - 1), tab->palette.window());

                // Delete border
                if (selected) {
                    p->fillRect(QRect(x1 + 1, y1, 1, (y2 - 1)-y1),tab->palette.window());
                    p->fillRect(QRect(x1, y1, 1, (y2-1)-y1), tab->palette.window());
                }
                // Top
                if (firstTab || selected || onlyOne || !previousSelected) {
                    p->setPen(light);
                    p->drawLine(x2 - 2, y1, x1 + ((onlyOne || firstTab) && selected && leftAligned ? 0 : borderThinkness), y1);
                    p->drawPoint(x2 - 1, y1 + 1);
                }
                // Right
                {
                    int beg = y1 + (previousSelected ? 0 : 2);
                    int end = y2 - (nextSelected ? 0 : 2);
                    p->setPen(shadow);
                    p->drawLine(x2, beg, x2, end);
                    p->setPen(dark);
                    p->drawLine(x2 - 1, beg, x2 - 1, end);
                }
                // Bottom
                if (lastTab || selected || onlyOne || !nextSelected) {
                    p->setPen(shadow);
                    p->drawLine(x2 - 2, y2, x1 + ((onlyOne || lastTab) && selected && rightAligned ? 0 : borderThinkness), y2);
                    p->drawPoint(x2 - 1, y2 - 1);
                    p->setPen(dark);
                    p->drawLine(x2 - 2, y2 - 1, x1 + ((onlyOne || lastTab) && selected && rightAligned ? 0 : borderThinkness), y2 - 1);
                }
                break; }
            }
        }
        break;
#endif // QT_CONFIG(tabbar)
    case CE_ToolBoxTabShape:
        qDrawShadePanel(p, opt->rect, opt->palette,
                        opt->state & (State_Sunken | State_On), 1,
                        &opt->palette.brush(QPalette::Button));
        break;
#if QT_CONFIG(splitter)
    case CE_Splitter:
        p->eraseRect(opt->rect);
        break;
#endif // QT_CONFIG(splitter)
#if QT_CONFIG(scrollbar)
    case CE_ScrollBarSubLine:
    case CE_ScrollBarAddLine: {
        if ((opt->state & State_Sunken)) {
            p->setPen(opt->palette.dark().color());
            p->setBrush(opt->palette.brush(QPalette::Button));
            p->drawRect(opt->rect.adjusted(0, 0, -1, -1));
        } else {
            QStyleOption buttonOpt = *opt;
            if (!(buttonOpt.state & State_Sunken))
                buttonOpt.state |= State_Raised;
            QPalette pal(opt->palette);
            pal.setColor(QPalette::Button, opt->palette.light().color());
            pal.setColor(QPalette::Light, opt->palette.button().color());
            qDrawWinButton(p, opt->rect, pal, opt->state & (State_Sunken | State_On),
                           &opt->palette.brush(QPalette::Button));
        }
        PrimitiveElement arrow;
        if (opt->state & State_Horizontal) {
            if (ce == CE_ScrollBarAddLine)
                arrow = opt->direction == Qt::LeftToRight ? PE_IndicatorArrowRight : PE_IndicatorArrowLeft;
            else
                arrow = opt->direction == Qt::LeftToRight ? PE_IndicatorArrowLeft : PE_IndicatorArrowRight;
        } else {
            if (ce == CE_ScrollBarAddLine)
                arrow = PE_IndicatorArrowDown;
            else
                arrow = PE_IndicatorArrowUp;
        }
        QStyleOption arrowOpt = *opt;
        arrowOpt.rect = opt->rect.adjusted(4, 4, -4, -4);
        proxy()->drawPrimitive(arrow, &arrowOpt, p, widget);
        break; }
    case CE_ScrollBarAddPage:
    case CE_ScrollBarSubPage: {
            QBrush br;
            QBrush bg = p->background();
            Qt::BGMode bg_mode = p->backgroundMode();
            p->setPen(Qt::NoPen);
            p->setBackgroundMode(Qt::OpaqueMode);

            if (opt->state & State_Sunken) {
                br = QBrush(opt->palette.shadow().color(), Qt::Dense4Pattern);
                p->setBackground(opt->palette.dark().color());
                p->setBrush(br);
            } else {
                const QBrush paletteBrush = opt->palette.brush(QPalette::Light);
                if (paletteBrush.style() == Qt::TexturePattern) {
                    if (qHasPixmapTexture(paletteBrush))
                        br = QBrush(paletteBrush.texture());
                    else
                        br = QBrush(paletteBrush.textureImage());
                } else
                    br = QBrush(opt->palette.light().color(), Qt::Dense4Pattern);
                p->setBackground(opt->palette.window().color());
                p->setBrush(br);
            }
            p->drawRect(opt->rect);
            p->setBackground(bg);
            p->setBackgroundMode(bg_mode);
            break; }
    case CE_ScrollBarSlider:
        if (!(opt->state & State_Enabled)) {
            QBrush br;
            const QBrush paletteBrush = opt->palette.brush(QPalette::Light);
            if (paletteBrush.style() == Qt::TexturePattern) {
                if (qHasPixmapTexture(paletteBrush))
                    br = QBrush(paletteBrush.texture());
                else
                    br = QBrush(paletteBrush.textureImage());
            } else
                br = QBrush(opt->palette.light().color(), Qt::Dense4Pattern);
            p->setPen(Qt::NoPen);
            p->setBrush(br);
            p->setBackgroundMode(Qt::OpaqueMode);
            p->drawRect(opt->rect);
        } else {
            QStyleOptionButton buttonOpt;
            buttonOpt.QStyleOption::operator=(*opt);
            buttonOpt.state = State_Enabled | State_Raised;

            QPalette pal(opt->palette);
            pal.setColor(QPalette::Button, opt->palette.light().color());
            pal.setColor(QPalette::Light, opt->palette.button().color());
            qDrawWinButton(p, opt->rect, pal, false, &opt->palette.brush(QPalette::Button));
        }
        break;
#endif // QT_CONFIG(scrollbar)
    case CE_HeaderSection: {
        QBrush fill;
        if (opt->state & State_On)
            fill = QBrush(opt->palette.light().color(), Qt::Dense4Pattern);
        else
            fill = opt->palette.brush(QPalette::Button);

        if (opt->state & (State_Raised | State_Sunken)) {
            qDrawWinButton(p, opt->rect, opt->palette, opt->state & State_Sunken, &fill);
        } else {
            p->fillRect(opt->rect, fill);
        }
        break; }
#if QT_CONFIG(toolbar)
    case CE_ToolBar:
        if (const QStyleOptionToolBar *toolbar = qstyleoption_cast<const QStyleOptionToolBar *>(opt)) {
            // Reserve the beveled appearance only for mainwindow toolbars
            if (!(widget && qobject_cast<const QMainWindow*> (widget->parentWidget())))
                break;

            QRect rect = opt->rect;
            bool paintLeftBorder = true;
            bool paintRightBorder = true;
            bool paintBottomBorder = true;

            switch (toolbar->toolBarArea){
            case Qt::BottomToolBarArea :
                switch(toolbar->positionOfLine){
                case QStyleOptionToolBar::Beginning:
                case QStyleOptionToolBar::OnlyOne:
                    paintBottomBorder = false;
                    break;
                default:
                    break;
                }
                Q_FALLTHROUGH(); // It continues in the end of the next case
            case Qt::TopToolBarArea :
                switch(toolbar->positionWithinLine){
                case QStyleOptionToolBar::Beginning:
                    paintLeftBorder = false;
                    break;
                case QStyleOptionToolBar::End:
                    paintRightBorder = false;
                    break;
                case QStyleOptionToolBar::OnlyOne:
                    paintRightBorder = false;
                    paintLeftBorder = false;
                    break;
                default:
                    break;
                }
                if(opt->direction == Qt::RightToLeft){ //reverse layout changes the order of Beginning/end
                    bool tmp = paintLeftBorder;
                    paintRightBorder=paintLeftBorder;
                    paintLeftBorder=tmp;
                }
                break;
            case Qt::RightToolBarArea :
                switch (toolbar->positionOfLine){
                case QStyleOptionToolBar::Beginning:
                case QStyleOptionToolBar::OnlyOne:
                    paintRightBorder = false;
                    break;
                default:
                    break;
                }
                break;
            case Qt::LeftToolBarArea :
                switch (toolbar->positionOfLine){
                case QStyleOptionToolBar::Beginning:
                case QStyleOptionToolBar::OnlyOne:
                    paintLeftBorder = false;
                    break;
                default:
                    break;
                }
                break;
            default:
                break;
            }


            //draw top border
            p->setPen(QPen(opt->palette.light().color()));
            p->drawLine(rect.topLeft().x(),
                        rect.topLeft().y(),
                        rect.topRight().x(),
                        rect.topRight().y());

            if (paintLeftBorder){
                p->setPen(QPen(opt->palette.light().color()));
                p->drawLine(rect.topLeft().x(),
                            rect.topLeft().y(),
                            rect.bottomLeft().x(),
                            rect.bottomLeft().y());
            }

            if (paintRightBorder){
                p->setPen(QPen(opt->palette.dark().color()));
                p->drawLine(rect.topRight().x(),
                            rect.topRight().y(),
                            rect.bottomRight().x(),
                            rect.bottomRight().y());
            }

            if (paintBottomBorder){
                p->setPen(QPen(opt->palette.dark().color()));
                p->drawLine(rect.bottomLeft().x(),
                            rect.bottomLeft().y(),
                            rect.bottomRight().x(),
                            rect.bottomRight().y());
            }
        }
        break;


#endif // QT_CONFIG(toolbar)

    case CE_ProgressBarContents:
        if (const QStyleOptionProgressBar *pb = qstyleoption_cast<const QStyleOptionProgressBar *>(opt)) {
            QRect rect = pb->rect;
            if (!rect.isValid())
                return;

            const bool vertical = pb->orientation == Qt::Vertical;
            const bool inverted = pb->invertedAppearance;

            QMatrix m;
            if (vertical) {
                rect = QRect(rect.y(), rect.x(), rect.height(), rect.width()); // flip width and height
                m.rotate(90);
                m.translate(0, -(rect.height() + rect.y()*2));
            }
            QPalette pal2 = pb->palette;
            // Correct the highlight color if it is the same as the background
            if (pal2.highlight() == pal2.window())
                pal2.setColor(QPalette::Highlight, pb->palette.color(QPalette::Active,
                                                                     QPalette::Highlight));
            bool reverse = ((!vertical && (pb->direction == Qt::RightToLeft)) || vertical);
            if (inverted)
                reverse = !reverse;
            int w = rect.width();
            Q_D(const QWindowsStyle);
            if (pb->minimum == 0 && pb->maximum == 0) {
                const int unit_width = proxy()->pixelMetric(PM_ProgressBarChunkWidth, pb, widget);
                QStyleOptionProgressBar pbBits = *pb;
                Q_ASSERT(unit_width >0);

                pbBits.rect = rect;
                pbBits.palette = pal2;

                int step = 0;
                int chunkCount = w / unit_width + 1;
#if QT_CONFIG(animation)
                if (QProgressStyleAnimation *animation = qobject_cast<QProgressStyleAnimation*>(d->animation(opt->styleObject)))
                    step = (animation->animationStep() / 3) % chunkCount;
                else
                    d->startAnimation(new QProgressStyleAnimation(d->animationFps, opt->styleObject));
#else
                Q_UNUSED(d);
#endif
                int chunksInRow = 5;
                int myY = pbBits.rect.y();
                int myHeight = pbBits.rect.height();
                int chunksToDraw = chunksInRow;

                if(step > chunkCount - 5)chunksToDraw = (chunkCount - step);
                p->save();
                p->setClipRect(m.mapRect(QRectF(rect)).toRect());

                int x0 = reverse ? rect.left() + rect.width() - unit_width*(step) - unit_width  : rect.left() + unit_width * step;
                int x = 0;

                for (int i = 0; i < chunksToDraw ; ++i) {
                    pbBits.rect.setRect(x0 + x, myY, unit_width, myHeight);
                    pbBits.rect = m.mapRect(QRectF(pbBits.rect)).toRect();
                    proxy()->drawPrimitive(PE_IndicatorProgressChunk, &pbBits, p, widget);
                    x += reverse ? -unit_width : unit_width;
                }
                //Draw wrap-around chunks
                if( step > chunkCount-5){
                    x0 = reverse ? rect.left() + rect.width() - unit_width : rect.left() ;
                    x = 0;
                    int chunksToDraw = step - (chunkCount - chunksInRow);
                    for (int i = 0; i < chunksToDraw ; ++i) {
                        pbBits.rect.setRect(x0 + x, myY, unit_width, myHeight);
                        pbBits.rect = m.mapRect(QRectF(pbBits.rect)).toRect();
                        proxy()->drawPrimitive(PE_IndicatorProgressChunk, &pbBits, p, widget);
                        x += reverse ? -unit_width : unit_width;
                    }
                }
                p->restore(); //restore state
            }
            else {
#if QT_CONFIG(animation)
                d->stopAnimation(opt->styleObject);
#endif
                QCommonStyle::drawControl(ce, opt, p, widget);
            }
        }
        break;

#if QT_CONFIG(dockwidget)
    case CE_DockWidgetTitle:

        if (const QStyleOptionDockWidget *dwOpt = qstyleoption_cast<const QStyleOptionDockWidget *>(opt)) {
            Q_D(const QWindowsStyle);

            const bool verticalTitleBar = dwOpt->verticalTitleBar;

            QRect rect = dwOpt->rect;
            QRect r = rect;

            if (verticalTitleBar) {
                r = r.transposed();

                p->save();
                p->translate(r.left(), r.top() + r.width());
                p->rotate(-90);
                p->translate(-r.left(), -r.top());
            }

            bool floating = false;
            bool active = dwOpt->state & State_Active;
            QColor inactiveCaptionTextColor = d->inactiveCaptionText;
            if (dwOpt->movable) {
                QColor left, right;

                //Titlebar gradient
                if (opt->state & QStyle::State_Window) {
                    floating = true;
                    if (active) {
                        left = d->activeCaptionColor;
                        right = d->activeGradientCaptionColor;
                    } else {
                        left = d->inactiveCaptionColor;
                        right = d->inactiveGradientCaptionColor;
                    }
                    QBrush fillBrush(left);
                    if (left != right) {
                        QPoint p1(r.x(), r.top() + r.height()/2);
                        QPoint p2(rect.right(), r.top() + r.height()/2);
                        QLinearGradient lg(p1, p2);
                        lg.setColorAt(0, left);
                        lg.setColorAt(1, right);
                        fillBrush = lg;
                    }
                    p->fillRect(r.adjusted(0, 0, 0, -3), fillBrush);
                }
            }
            if (!dwOpt->title.isEmpty()) {
                QFont oldFont = p->font();
                if (floating) {
                    QFont font = oldFont;
                    font.setBold(true);
                    p->setFont(font);
                }
                QPalette palette = dwOpt->palette;
                palette.setColor(QPalette::Window, inactiveCaptionTextColor);
                QRect titleRect = subElementRect(SE_DockWidgetTitleBarText, opt, widget);
                if (verticalTitleBar) {
                    titleRect = QRect(r.left() + rect.bottom()
                                        - titleRect.bottom(),
                                    r.top() + titleRect.left() - rect.left(),
                                    titleRect.height(), titleRect.width());
                }
                proxy()->drawItemText(p, titleRect,
                            Qt::AlignLeft | Qt::AlignVCenter, palette,
                            dwOpt->state & State_Enabled, dwOpt->title,
                            floating ? (active ? QPalette::BrightText : QPalette::Window) : QPalette::WindowText);
                p->setFont(oldFont);
            }
            if (verticalTitleBar)
                p->restore();
        }
        return;
#endif // QT_CONFIG(dockwidget)
#if QT_CONFIG(combobox)
    case CE_ComboBoxLabel:
        if (const QStyleOptionComboBox *cb = qstyleoption_cast<const QStyleOptionComboBox *>(opt)) {
            if (cb->state & State_HasFocus) {
                p->setPen(cb->palette.highlightedText().color());
                p->setBackground(cb->palette.highlight());
            } else {
                p->setPen(cb->palette.text().color());
                p->setBackground(cb->palette.window());
            }
        }
        QCommonStyle::drawControl(ce, opt, p, widget);
        break;
#endif // QT_CONFIG(combobox)
    default:
        QCommonStyle::drawControl(ce, opt, p, widget);
    }
}

/*! \reimp */
QRect QWindowsStyle::subElementRect(SubElement sr, const QStyleOption *opt, const QWidget *w) const
{
    QRect r;
    switch (sr) {
    case SE_SliderFocusRect:
    case SE_ToolBoxTabContents:
        r = visualRect(opt->direction, opt->rect, opt->rect);
        break;
    case SE_DockWidgetTitleBarText: {
        r = QCommonStyle::subElementRect(sr, opt, w);
        const QStyleOptionDockWidget *dwOpt
            = qstyleoption_cast<const QStyleOptionDockWidget*>(opt);
        const bool verticalTitleBar = dwOpt && dwOpt->verticalTitleBar;
        int m = proxy()->pixelMetric(PM_DockWidgetTitleMargin, opt, w);
        if (verticalTitleBar) {
            r.adjust(0, 0, 0, -m);
        } else {
            if (opt->direction == Qt::LeftToRight)
                r.adjust(m, 0, 0, 0);
            else
                r.adjust(0, 0, -m, 0);
        }
        break;
    }
    case SE_ProgressBarContents:
        r = QCommonStyle::subElementRect(SE_ProgressBarGroove, opt, w);
        r.adjust(3, 3, -3, -3);
        break;
    default:
        r = QCommonStyle::subElementRect(sr, opt, w);
    }
    return r;
}


/*! \reimp */
void QWindowsStyle::drawComplexControl(ComplexControl cc, const QStyleOptionComplex *opt,
                                       QPainter *p, const QWidget *widget) const
{
    switch (cc) {
#if QT_CONFIG(slider)
    case CC_Slider:
        if (const QStyleOptionSlider *slider = qstyleoption_cast<const QStyleOptionSlider *>(opt)) {
            int thickness  = proxy()->pixelMetric(PM_SliderControlThickness, slider, widget);
            int len        = proxy()->pixelMetric(PM_SliderLength, slider, widget);
            int ticks = slider->tickPosition;
            QRect groove = proxy()->subControlRect(CC_Slider, slider, SC_SliderGroove, widget);
            QRect handle = proxy()->subControlRect(CC_Slider, slider, SC_SliderHandle, widget);

            if ((slider->subControls & SC_SliderGroove) && groove.isValid()) {
                int mid = thickness / 2;

                if (ticks & QSlider::TicksAbove)
                    mid += len / 8;
                if (ticks & QSlider::TicksBelow)
                    mid -= len / 8;

                p->setPen(slider->palette.shadow().color());
                if (slider->orientation == Qt::Horizontal) {
                    qDrawWinPanel(p, groove.x(), groove.y() + mid - 2,
                                   groove.width(), 4, slider->palette, true);
                    p->drawLine(groove.x() + 1, groove.y() + mid - 1,
                                groove.x() + groove.width() - 3, groove.y() + mid - 1);
                } else {
                    qDrawWinPanel(p, groove.x() + mid - 2, groove.y(),
                                  4, groove.height(), slider->palette, true);
                    p->drawLine(groove.x() + mid - 1, groove.y() + 1,
                                groove.x() + mid - 1, groove.y() + groove.height() - 3);
                }
            }

            if (slider->subControls & SC_SliderTickmarks) {
                QStyleOptionSlider tmpSlider = *slider;
                tmpSlider.subControls = SC_SliderTickmarks;
                QCommonStyle::drawComplexControl(cc, &tmpSlider, p, widget);
            }

            if (slider->subControls & SC_SliderHandle) {
                // 4444440
                // 4333310
                // 4322210
                // 4322210
                // 4322210
                // 4322210
                // *43210*
                // **410**
                // ***0***
                const QColor c0 = slider->palette.shadow().color();
                const QColor c1 = slider->palette.dark().color();
                // const QColor c2 = g.button();
                const QColor c3 = slider->palette.midlight().color();
                const QColor c4 = slider->palette.light().color();
                QBrush handleBrush;

                if (slider->state & State_Enabled) {
                    handleBrush = slider->palette.color(QPalette::Button);
                } else {
                    handleBrush = QBrush(slider->palette.color(QPalette::Button),
                                         Qt::Dense4Pattern);
                }


                int x = handle.x(), y = handle.y(),
                   wi = handle.width(), he = handle.height();

                int x1 = x;
                int x2 = x+wi-1;
                int y1 = y;
                int y2 = y+he-1;

                Qt::Orientation orient = slider->orientation;
                bool tickAbove = slider->tickPosition == QSlider::TicksAbove;
                bool tickBelow = slider->tickPosition == QSlider::TicksBelow;

                if (slider->state & State_HasFocus) {
                    QStyleOptionFocusRect fropt;
                    fropt.QStyleOption::operator=(*slider);
                    fropt.rect = subElementRect(SE_SliderFocusRect, slider, widget);
                    proxy()->drawPrimitive(PE_FrameFocusRect, &fropt, p, widget);
                }

                if ((tickAbove && tickBelow) || (!tickAbove && !tickBelow)) {
                    Qt::BGMode oldMode = p->backgroundMode();
                    p->setBackgroundMode(Qt::OpaqueMode);
                    qDrawWinButton(p, QRect(x, y, wi, he), slider->palette, false,
                                   &handleBrush);
                    p->setBackgroundMode(oldMode);
                    return;
                }

                QSliderDirection dir;

                if (orient == Qt::Horizontal)
                    if (tickAbove)
                        dir = SlUp;
                    else
                        dir = SlDown;
                else
                    if (tickAbove)
                        dir = SlLeft;
                    else
                        dir = SlRight;

                QPolygon a;

                int d = 0;
                switch (dir) {
                case SlUp:
                    y1 = y1 + wi/2;
                    d =  (wi + 1) / 2 - 1;
                    a.setPoints(5, x1,y1, x1,y2, x2,y2, x2,y1, x1+d,y1-d);
                    break;
                case SlDown:
                    y2 = y2 - wi/2;
                    d =  (wi + 1) / 2 - 1;
                    a.setPoints(5, x1,y1, x1,y2, x1+d,y2+d, x2,y2, x2,y1);
                    break;
                case SlLeft:
                    d =  (he + 1) / 2 - 1;
                    x1 = x1 + he/2;
                    a.setPoints(5, x1,y1, x1-d,y1+d, x1,y2, x2,y2, x2,y1);
                    break;
                case SlRight:
                    d =  (he + 1) / 2 - 1;
                    x2 = x2 - he/2;
                    a.setPoints(5, x1,y1, x1,y2, x2,y2, x2+d,y1+d, x2,y1);
                    break;
                }

                QBrush oldBrush = p->brush();
                bool oldQt4CompatiblePainting = p->testRenderHint(QPainter::Qt4CompatiblePainting);
                p->setPen(Qt::NoPen);
                p->setBrush(handleBrush);
                p->setRenderHint(QPainter::Qt4CompatiblePainting);
                Qt::BGMode oldMode = p->backgroundMode();
                p->setBackgroundMode(Qt::OpaqueMode);
                p->drawRect(x1, y1, x2-x1+1, y2-y1+1);
                p->drawPolygon(a);
                p->setBrush(oldBrush);
                p->setBackgroundMode(oldMode);

                if (dir != SlUp) {
                    p->setPen(c4);
                    p->drawLine(x1, y1, x2, y1);
                    p->setPen(c3);
                    p->drawLine(x1, y1+1, x2, y1+1);
                }
                if (dir != SlLeft) {
                    p->setPen(c3);
                    p->drawLine(x1+1, y1+1, x1+1, y2);
                    p->setPen(c4);
                    p->drawLine(x1, y1, x1, y2);
                }
                if (dir != SlRight) {
                    p->setPen(c0);
                    p->drawLine(x2, y1, x2, y2);
                    p->setPen(c1);
                    p->drawLine(x2-1, y1+1, x2-1, y2-1);
                }
                if (dir != SlDown) {
                    p->setPen(c0);
                    p->drawLine(x1, y2, x2, y2);
                    p->setPen(c1);
                    p->drawLine(x1+1, y2-1, x2-1, y2-1);
                }

                switch (dir) {
                case SlUp:
                    p->setPen(c4);
                    p->drawLine(x1, y1, x1+d, y1-d);
                    p->setPen(c0);
                    d = wi - d - 1;
                    p->drawLine(x2, y1, x2-d, y1-d);
                    d--;
                    p->setPen(c3);
                    p->drawLine(x1+1, y1, x1+1+d, y1-d);
                    p->setPen(c1);
                    p->drawLine(x2-1, y1, x2-1-d, y1-d);
                    break;
                case SlDown:
                    p->setPen(c4);
                    p->drawLine(x1, y2, x1+d, y2+d);
                    p->setPen(c0);
                    d = wi - d - 1;
                    p->drawLine(x2, y2, x2-d, y2+d);
                    d--;
                    p->setPen(c3);
                    p->drawLine(x1+1, y2, x1+1+d, y2+d);
                    p->setPen(c1);
                    p->drawLine(x2-1, y2, x2-1-d, y2+d);
                    break;
                case SlLeft:
                    p->setPen(c4);
                    p->drawLine(x1, y1, x1-d, y1+d);
                    p->setPen(c0);
                    d = he - d - 1;
                    p->drawLine(x1, y2, x1-d, y2-d);
                    d--;
                    p->setPen(c3);
                    p->drawLine(x1, y1+1, x1-d, y1+1+d);
                    p->setPen(c1);
                    p->drawLine(x1, y2-1, x1-d, y2-1-d);
                    break;
                case SlRight:
                    p->setPen(c4);
                    p->drawLine(x2, y1, x2+d, y1+d);
                    p->setPen(c0);
                    d = he - d - 1;
                    p->drawLine(x2, y2, x2+d, y2-d);
                    d--;
                    p->setPen(c3);
                    p->drawLine(x2, y1+1, x2+d, y1+1+d);
                    p->setPen(c1);
                    p->drawLine(x2, y2-1, x2+d, y2-1-d);
                    break;
                }
                p->setRenderHint(QPainter::Qt4CompatiblePainting, oldQt4CompatiblePainting);
            }
        }
        break;
#endif // QT_CONFIG(slider)
#if QT_CONFIG(scrollbar)
    case CC_ScrollBar:
        if (const QStyleOptionSlider *scrollbar = qstyleoption_cast<const QStyleOptionSlider *>(opt)) {
            QStyleOptionSlider newScrollbar = *scrollbar;
            if (scrollbar->minimum == scrollbar->maximum)
                newScrollbar.state &= ~State_Enabled; //do not draw the slider.
            QCommonStyle::drawComplexControl(cc, &newScrollbar, p, widget);
        }
        break;
#endif // QT_CONFIG(scrollbar)
#if QT_CONFIG(combobox)
    case CC_ComboBox:
        if (const QStyleOptionComboBox *cmb = qstyleoption_cast<const QStyleOptionComboBox *>(opt)) {
            QBrush editBrush = cmb->palette.brush(QPalette::Base);
            if ((cmb->subControls & SC_ComboBoxFrame)) {
                if (cmb->frame) {
                    QPalette shadePal = opt->palette;
                    shadePal.setColor(QPalette::Midlight, shadePal.button().color());
                    qDrawWinPanel(p, opt->rect, shadePal, true, &editBrush);
                }
                else {
                    p->fillRect(opt->rect, editBrush);
                }
            }
            if (cmb->subControls & SC_ComboBoxArrow) {
                State flags = State_None;

                QRect ar = proxy()->subControlRect(CC_ComboBox, cmb, SC_ComboBoxArrow, widget);
                bool sunkenArrow = cmb->activeSubControls == SC_ComboBoxArrow
                                   && cmb->state & State_Sunken;
                if (sunkenArrow) {
                    p->setPen(cmb->palette.dark().color());
                    p->setBrush(cmb->palette.brush(QPalette::Button));
                    p->drawRect(ar.adjusted(0,0,-1,-1));
                } else {
                    // Make qDrawWinButton use the right colors for drawing the shade of the button
                    QPalette pal(cmb->palette);
                    pal.setColor(QPalette::Button, cmb->palette.light().color());
                    pal.setColor(QPalette::Light, cmb->palette.button().color());
                    qDrawWinButton(p, ar, pal, false,
                                   &cmb->palette.brush(QPalette::Button));
                }

                ar.adjust(2, 2, -2, -2);
                if (opt->state & State_Enabled)
                    flags |= State_Enabled;
                if (opt->state & State_HasFocus)
                    flags |= State_HasFocus;

                if (sunkenArrow)
                    flags |= State_Sunken;
                QStyleOption arrowOpt = *cmb;
                arrowOpt.rect = ar.adjusted(1, 1, -1, -1);
                arrowOpt.state = flags;
                proxy()->drawPrimitive(PE_IndicatorArrowDown, &arrowOpt, p, widget);
            }

            if (cmb->subControls & SC_ComboBoxEditField) {
                QRect re = proxy()->subControlRect(CC_ComboBox, cmb, SC_ComboBoxEditField, widget);
                if (cmb->state & State_HasFocus && !cmb->editable)
                    p->fillRect(re.x(), re.y(), re.width(), re.height(),
                                cmb->palette.brush(QPalette::Highlight));

                if (cmb->state & State_HasFocus) {
                    p->setPen(cmb->palette.highlightedText().color());
                    p->setBackground(cmb->palette.highlight());

                } else {
                    p->setPen(cmb->palette.text().color());
                    p->setBackground(cmb->palette.window());
                }

                if (cmb->state & State_HasFocus && !cmb->editable) {
                    QStyleOptionFocusRect focus;
                    focus.QStyleOption::operator=(*cmb);
                    focus.rect = subElementRect(SE_ComboBoxFocusRect, cmb, widget);
                    focus.state |= State_FocusAtBorder;
                    focus.backgroundColor = cmb->palette.highlight().color();
                    proxy()->drawPrimitive(PE_FrameFocusRect, &focus, p, widget);
                }
            }
        }
        break;
#endif // QT_CONFIG(combobox)
#if QT_CONFIG(spinbox)
    case CC_SpinBox:
        if (const QStyleOptionSpinBox *sb = qstyleoption_cast<const QStyleOptionSpinBox *>(opt)) {
            QStyleOptionSpinBox copy = *sb;
            PrimitiveElement pe;
            bool enabled = opt->state & State_Enabled;
            if (sb->frame && (sb->subControls & SC_SpinBoxFrame)) {
                QBrush editBrush = sb->palette.brush(QPalette::Base);
                QRect r = proxy()->subControlRect(CC_SpinBox, sb, SC_SpinBoxFrame, widget);
                QPalette shadePal = sb->palette;
                shadePal.setColor(QPalette::Midlight, shadePal.button().color());
                qDrawWinPanel(p, r, shadePal, true, &editBrush);
            }

            QPalette shadePal(opt->palette);
            shadePal.setColor(QPalette::Button, opt->palette.light().color());
            shadePal.setColor(QPalette::Light, opt->palette.button().color());

            if (sb->subControls & SC_SpinBoxUp) {
                copy.subControls = SC_SpinBoxUp;
                QPalette pal2 = sb->palette;
                if (!(sb->stepEnabled & QAbstractSpinBox::StepUpEnabled)) {
                    pal2.setCurrentColorGroup(QPalette::Disabled);
                    copy.state &= ~State_Enabled;
                }

                copy.palette = pal2;

                if (sb->activeSubControls == SC_SpinBoxUp && (sb->state & State_Sunken)) {
                    copy.state |= State_On;
                    copy.state |= State_Sunken;
                } else {
                    copy.state |= State_Raised;
                    copy.state &= ~State_Sunken;
                }
                pe = (sb->buttonSymbols == QAbstractSpinBox::PlusMinus ? PE_IndicatorSpinPlus
                                                                       : PE_IndicatorSpinUp);

                copy.rect = proxy()->subControlRect(CC_SpinBox, sb, SC_SpinBoxUp, widget);
                qDrawWinButton(p, copy.rect, shadePal, copy.state & (State_Sunken | State_On),
                                &copy.palette.brush(QPalette::Button));
                copy.rect.adjust(4, 1, -5, -1);
                if ((!enabled || !(sb->stepEnabled & QAbstractSpinBox::StepUpEnabled))
                    && proxy()->styleHint(SH_EtchDisabledText, opt, widget) )
                {
                    QStyleOptionSpinBox lightCopy = copy;
                    lightCopy.rect.adjust(1, 1, 1, 1);
                    lightCopy.palette.setBrush(QPalette::ButtonText, copy.palette.light());
                    proxy()->drawPrimitive(pe, &lightCopy, p, widget);
                }
                proxy()->drawPrimitive(pe, &copy, p, widget);
            }

            if (sb->subControls & SC_SpinBoxDown) {
                copy.subControls = SC_SpinBoxDown;
                copy.state = sb->state;
                QPalette pal2 = sb->palette;
                if (!(sb->stepEnabled & QAbstractSpinBox::StepDownEnabled)) {
                    pal2.setCurrentColorGroup(QPalette::Disabled);
                    copy.state &= ~State_Enabled;
                }
                copy.palette = pal2;

                if (sb->activeSubControls == SC_SpinBoxDown && (sb->state & State_Sunken)) {
                    copy.state |= State_On;
                    copy.state |= State_Sunken;
                } else {
                    copy.state |= State_Raised;
                    copy.state &= ~State_Sunken;
                }
                pe = (sb->buttonSymbols == QAbstractSpinBox::PlusMinus ? PE_IndicatorSpinMinus
                                                                       : PE_IndicatorSpinDown);

                copy.rect = proxy()->subControlRect(CC_SpinBox, sb, SC_SpinBoxDown, widget);
                qDrawWinButton(p, copy.rect, shadePal, copy.state & (State_Sunken | State_On),
                                &copy.palette.brush(QPalette::Button));
                copy.rect.adjust(4, 0, -5, -1);
                if ((!enabled || !(sb->stepEnabled & QAbstractSpinBox::StepDownEnabled))
                    && proxy()->styleHint(SH_EtchDisabledText, opt, widget) )
                {
                    QStyleOptionSpinBox lightCopy = copy;
                    lightCopy.rect.adjust(1, 1, 1, 1);
                    lightCopy.palette.setBrush(QPalette::ButtonText, copy.palette.light());
                    proxy()->drawPrimitive(pe, &lightCopy, p, widget);
                }
                proxy()->drawPrimitive(pe, &copy, p, widget);
            }
        }
        break;
#endif // QT_CONFIG(spinbox)

    default:
        QCommonStyle::drawComplexControl(cc, opt, p, widget);
    }
}

/*! \reimp */
QSize QWindowsStyle::sizeFromContents(ContentsType ct, const QStyleOption *opt,
                                      const QSize &csz, const QWidget *widget) const
{
    QSize sz(csz);
    switch (ct) {
    case CT_PushButton:
        if (const QStyleOptionButton *btn = qstyleoption_cast<const QStyleOptionButton *>(opt)) {
            sz = QCommonStyle::sizeFromContents(ct, opt, csz, widget);
            int w = sz.width(),
                h = sz.height();
            int defwidth = 0;
            if (btn->features & QStyleOptionButton::AutoDefaultButton)
                defwidth = 2 * proxy()->pixelMetric(PM_ButtonDefaultIndicator, btn, widget);
            const qreal dpi = QStyleHelper::dpi(opt);
            int minwidth = int(QStyleHelper::dpiScaled(75, dpi));
            int minheight = int(QStyleHelper::dpiScaled(23, dpi));

#ifndef QT_QWS_SMALL_PUSHBUTTON
            if (w < minwidth + defwidth && !btn->text.isEmpty())
                w = minwidth + defwidth;
            if (h < minheight + defwidth)
                h = minheight + defwidth;
#endif
            sz = QSize(w, h);
        }
        break;
#if QT_CONFIG(menu)
    case CT_MenuItem:
        if (const QStyleOptionMenuItem *mi = qstyleoption_cast<const QStyleOptionMenuItem *>(opt)) {
            int w = sz.width();
            sz = QCommonStyle::sizeFromContents(ct, opt, csz, widget);

            if (mi->menuItemType == QStyleOptionMenuItem::Separator) {
                sz = QSize(10, QWindowsStylePrivate::windowsSepHeight);
            }
            else if (mi->icon.isNull()) {
                sz.setHeight(sz.height() - 2);
                w -= 6;
            }

            if (mi->menuItemType != QStyleOptionMenuItem::Separator && !mi->icon.isNull()) {
                int iconExtent = proxy()->pixelMetric(PM_SmallIconSize, opt, widget);
                sz.setHeight(qMax(sz.height(),
                                  mi->icon.actualSize(QSize(iconExtent, iconExtent)).height()
                                  + 2 * QWindowsStylePrivate::windowsItemFrame));
            }
            int maxpmw = mi->maxIconWidth;
            int tabSpacing = 20;
            if (mi->text.contains(QLatin1Char('\t')))
                w += tabSpacing;
            else if (mi->menuItemType == QStyleOptionMenuItem::SubMenu)
                w += 2 * QWindowsStylePrivate::windowsArrowHMargin;
            else if (mi->menuItemType == QStyleOptionMenuItem::DefaultItem) {
                // adjust the font and add the difference in size.
                // it would be better if the font could be adjusted in the initStyleOption qmenu func!!
                QFontMetrics fm(mi->font);
                QFont fontBold = mi->font;
                fontBold.setBold(true);
                QFontMetrics fmBold(fontBold);
                w += fmBold.horizontalAdvance(mi->text) - fm.horizontalAdvance(mi->text);
            }

            int checkcol = qMax<int>(maxpmw, QWindowsStylePrivate::windowsCheckMarkWidth); // Windows always shows a check column
            w += checkcol;
            w += int(QWindowsStylePrivate::windowsRightBorder) + 10;
            sz.setWidth(w);
        }
        break;
#endif // QT_CONFIG(menu)
#if QT_CONFIG(menubar)
    case CT_MenuBarItem:
        if (!sz.isEmpty())
            sz += QSize(QWindowsStylePrivate::windowsItemHMargin * 4, QWindowsStylePrivate::windowsItemVMargin * 2);
        break;
#endif
    case CT_ToolButton:
        if (qstyleoption_cast<const QStyleOptionToolButton *>(opt))
            return sz += QSize(7, 6);
        Q_FALLTHROUGH();

    default:
        sz = QCommonStyle::sizeFromContents(ct, opt, csz, widget);
    }
    return sz;
}

/*!
    \reimp
*/
QIcon QWindowsStyle::standardIcon(StandardPixmap standardIcon, const QStyleOption *option,
                                  const QWidget *widget) const
{
    return QCommonStyle::standardIcon(standardIcon, option, widget);
}


QT_END_NAMESPACE

#include "moc_qwindowsstyle_p.cpp"

#endif // style_windows