qwindowsxpstyle.cpp

奇趣公司比较新的qt/emd版本

    QWindowsStyle, QCommonStyle, and QStyle, but the
    QWindowsXPStyle overloads of drawComplexControl(), drawControl(),
    drawControlMask(), drawPrimitive(), subControlRect(), and
    sizeFromContents(), are documented here.

    \img qwindowsxpstyle.png
    \sa QMacStyle, QWindowsStyle, QPlastiqueStyle, QCDEStyle, QMotifStyle
*/

/*!
    Constructs a QWindowsStyle
*/
QWindowsXPStyle::QWindowsXPStyle()
    : QWindowsStyle(*new QWindowsXPStylePrivate)
{
}

/*!
    Destroys the style.
*/
QWindowsXPStyle::~QWindowsXPStyle()
{
}

/*! \reimp */
void QWindowsXPStyle::unpolish(QApplication *app)
{
    QWindowsStyle::unpolish(app);
}

/*! \reimp */
void QWindowsXPStyle::polish(QApplication *app)
{
    QWindowsStyle::polish(app);
    if (!QWindowsXPStylePrivate::useXP())
        return;
}

/*! \reimp */
void QWindowsXPStyle::polish(QWidget *widget)
{
    QWindowsStyle::polish(widget);
    if (!QWindowsXPStylePrivate::useXP())
        return;

    if (qobject_cast<QAbstractButton*>(widget)
        || qobject_cast<QToolButton*>(widget)
        || qobject_cast<QTabBar*>(widget)
        || qobject_cast<QComboBox*>(widget)
        || qobject_cast<QScrollBar*>(widget)
        || qobject_cast<QSlider*>(widget)
        || qobject_cast<QHeaderView*>(widget)
        || qobject_cast<QAbstractSpinBox*>(widget)
        || qobject_cast<QSpinBox*>(widget)
        || widget->inherits("QWorkspaceChild")
        || widget->inherits("Q3TitleBar"))
        widget->setAttribute(Qt::WA_Hover);

#ifndef QT_NO_RUBBERBAND
    if (qobject_cast<QRubberBand*>(widget)) {
        widget->setWindowOpacity(0.6);
    }
#endif
    if (qobject_cast<QStackedWidget*>(widget) &&
               qobject_cast<QTabWidget*>(widget->parent()))
        widget->parentWidget()->setAttribute(Qt::WA_ContentsPropagated);

    Q_D(QWindowsXPStyle);
    if (!d->hasInitColors) {
        // Get text color for group box labels
        COLORREF cref;
        XPThemeData theme(0, 0, QLatin1String("BUTTON"), 0, 0);
        pGetThemeColor(theme.handle(), BP_GROUPBOX, GBS_NORMAL, TMT_TEXTCOLOR, &cref);
        d->groupBoxTextColor = qRgb(GetRValue(cref), GetGValue(cref), GetBValue(cref));
        pGetThemeColor(theme.handle(), BP_GROUPBOX, GBS_DISABLED, TMT_TEXTCOLOR, &cref);
        d->groupBoxTextColorDisabled = qRgb(GetRValue(cref), GetGValue(cref), GetBValue(cref));
        // Where does this color come from?
        //pGetThemeColor(theme.handle(), TKP_TICS, TSS_NORMAL, TMT_COLOR, &cref);
        d->sliderTickColor = qRgb(165, 162, 148);
        d->hasInitColors = true;
    }
}

/*! \reimp */
void QWindowsXPStyle::polish(QPalette &pal)
{
    QWindowsStyle::polish(pal);
    pal.setBrush(QPalette::AlternateBase, pal.base().color().darker(110));
}

/*! \reimp */
void QWindowsXPStyle::unpolish(QWidget *widget)
{
#ifndef QT_NO_RUBBERBAND
    if (qobject_cast<QRubberBand*>(widget)) {
        widget->setWindowOpacity(1.0);
    }
#endif
    Q_D(QWindowsXPStyle);
    // Unpolish of widgets is the first thing that
    // happens when a theme changes, or the theme
    // engine is turned off. So we detect it here.
    bool oldState = QWindowsXPStylePrivate::useXP();
    bool newState = QWindowsXPStylePrivate::useXP(true);
    if ((oldState != newState) && newState) {
        d->cleanup(true);
        d->init(true);
    } else {
        // Cleanup handle map, if just changing style,
        // or turning it on. In both cases the values
        // already in the map might be old (other style).
        d->cleanupHandleMap();
    }
    if (qobject_cast<QAbstractButton*>(widget)
        || qobject_cast<QToolButton*>(widget)
        || qobject_cast<QTabBar*>(widget)
        || qobject_cast<QComboBox*>(widget)
        || qobject_cast<QScrollBar*>(widget)
        || qobject_cast<QSlider*>(widget)
        || qobject_cast<QHeaderView*>(widget)
        || qobject_cast<QAbstractSpinBox*>(widget)
        || qobject_cast<QSpinBox*>(widget)
        || widget->inherits("QWorkspaceChild")
        || widget->inherits("Q3TitleBar"))
        widget->setAttribute(Qt::WA_Hover, false);
    QWindowsStyle::unpolish(widget);
}

/*! \reimp */
QRect QWindowsXPStyle::subElementRect(SubElement sr, const QStyleOption *option, const QWidget *widget) const
{
    if (!QWindowsXPStylePrivate::useXP()) {
        return QWindowsStyle::subElementRect(sr, option, widget);
    }

    QRect rect(option->rect);
    switch(sr) {
    case SE_DockWidgetCloseButton:
    case SE_DockWidgetFloatButton:
        rect = QWindowsStyle::subElementRect(sr, option, widget);
        return rect.translated(0, 1);
    break;
    case SE_TabWidgetTabContents:
        if (qstyleoption_cast<const QStyleOptionTabWidgetFrame *>(option))
        {
            rect = QWindowsStyle::subElementRect(sr, option, widget);
            if (sr == SE_TabWidgetTabContents)
                   rect.adjust(0, 0, -2, -2);
        }
        break;
    case SE_TabWidgetTabBar: {
        rect = QWindowsStyle::subElementRect(sr, option, widget);
        const QStyleOptionTabWidgetFrame *twfOption =
            qstyleoption_cast<const QStyleOptionTabWidgetFrame *>(option);
        if (twfOption && twfOption->direction == Qt::RightToLeft
            && (twfOption->shape == QTabBar::RoundedNorth
                || twfOption->shape == QTabBar::RoundedSouth))
        {
            QStyleOptionTab otherOption;
            otherOption.shape = (twfOption->shape == QTabBar::RoundedNorth
                                ? QTabBar::RoundedEast : QTabBar::RoundedSouth);
            int overlap = pixelMetric(PM_TabBarBaseOverlap, &otherOption, widget);
            int borderThickness = pixelMetric(PM_DefaultFrameWidth, option, widget);
            rect.adjust(-overlap + borderThickness, 0, -overlap + borderThickness, 0);
        }
        break;}

    case SE_PushButtonContents:
        if (const QStyleOptionButton *btn = qstyleoption_cast<const QStyleOptionButton *>(option)) {
            MARGINS borderSize;
            if (widget) {
                HTHEME theme = pOpenThemeData(QWindowsXPStylePrivate::winId(widget), L"Button");
                if (theme) {
                    int stateId;
                    if (!(option->state & State_Enabled))
                        stateId = PBS_DISABLED;
                    else if (option->state & State_Sunken)
                        stateId = PBS_PRESSED;
                    else if (option->state & State_MouseOver)
                        stateId = PBS_HOT;
                    else if (btn->features & QStyleOptionButton::DefaultButton)
                        stateId = PBS_DEFAULTED;
                    else
                        stateId = PBS_NORMAL;

                    int border = pixelMetric(PM_DefaultFrameWidth, btn, widget);
                    rect = option->rect.adjusted(border, border, -border, -border);

                    int result = pGetThemeMargins(theme,
                                                  NULL,
                                                  BP_PUSHBUTTON,
                                                  stateId,
                                                  TMT_CONTENTMARGINS,
                                                  NULL,
                                                  &borderSize);

                    if (result == S_OK) {
                        rect.adjust(borderSize.cxLeftWidth, borderSize.cyTopHeight,
                                    -borderSize.cxRightWidth, -borderSize.cyBottomHeight);
                        rect = visualRect(option->direction, option->rect, rect);
                    }
                }
            }
        }
        break;
    case SE_ProgressBarContents:
        rect = QCommonStyle::subElementRect(SE_ProgressBarGroove, option, widget);
        if (option->state & QStyle::State_Horizontal)
            rect.adjust(4, 3, -4, -3);
        else
            rect.adjust(3, 2, -3, -2);
        break;
    default:
        rect = QWindowsStyle::subElementRect(sr, option, widget);
    }
    return rect;
}

/*!
    \reimp
*/
void QWindowsXPStyle::drawPrimitive(PrimitiveElement pe, const QStyleOption *option, QPainter *p,
                                    const QWidget *widget) const
{
    QWindowsXPStylePrivate *d = const_cast<QWindowsXPStylePrivate*>(d_func());

    if (!QWindowsXPStylePrivate::useXP()) {
        QWindowsStyle::drawPrimitive(pe, option, p, widget);
        return;
    }

    QString name;
    int partId = 0;
    int stateId = 0;
    QRect rect = option->rect;
    State flags = option->state;
    bool hMirrored = false;
    bool vMirrored = false;
    bool noBorder = false;
    bool noContent = false;
    int  rotate = 0;

    switch (pe) {
    case PE_FrameTabBarBase:
        if (const QStyleOptionTabBarBase *tbb
                = qstyleoption_cast<const QStyleOptionTabBarBase *>(option)) {
            QRegion region(tbb->rect);
            p->save();
            switch (tbb->shape) {
            case QTabBar::RoundedNorth:
                region -= tbb->selectedTabRect.adjusted(-1, 0 , 1, 0);
                p->setClipRegion(region);
                p->setPen(QPen(tbb->palette.dark(), 0));
                p->drawLine(tbb->rect.topLeft(), tbb->rect.topRight());
                break;
            case QTabBar::RoundedWest:
                region -= tbb->selectedTabRect.adjusted(0, -1 , 0, 1);
                p->setClipRegion(region);
                p->setPen(QPen(tbb->palette.dark(), 0));
                p->drawLine(tbb->rect.left(), tbb->rect.top(), tbb->rect.left(), tbb->rect.bottom());
                break;
            case QTabBar::RoundedSouth:
                region -= tbb->selectedTabRect.adjusted(-1, 0 , 1, 0);
                p->setClipRegion(region);
                p->setPen(QPen(tbb->palette.dark(), 0));
                p->drawLine(tbb->rect.left(), tbb->rect.top(),
                            tbb->rect.right(), tbb->rect.top());
                break;
            case QTabBar::RoundedEast:
                region -= tbb->selectedTabRect.adjusted(0, -1 , 0, 1);
                p->setClipRegion(region);
                p->setPen(QPen(tbb->palette.dark(), 0));
                p->drawLine(tbb->rect.topLeft(), tbb->rect.bottomLeft());
                break;
            case QTabBar::TriangularNorth:
            case QTabBar::TriangularEast:
            case QTabBar::TriangularWest:
            case QTabBar::TriangularSouth:
                p->restore();
                QWindowsStyle::drawPrimitive(pe, option, p, widget);
                return;
            }
            p->restore();
        }
        return;
    case PE_PanelButtonBevel:
        name = QLatin1String("BUTTON");
        partId = BP_PUSHBUTTON;
        if (!(flags & State_Enabled))
            stateId = PBS_DISABLED;
        else if ((flags & State_Sunken) || (flags & State_On))
            stateId = PBS_PRESSED;
        else if (flags & State_MouseOver)
            stateId = PBS_HOT;
        //else if (flags & State_ButtonDefault)
        //    stateId = PBS_DEFAULTED;
        else
            stateId = PBS_NORMAL;
        break;

    case PE_PanelButtonTool:
        if (widget && widget->inherits("QDockWidgetTitleButton")) {
            if (const QWidget *dw = widget->parentWidget())
                if (dw->isWindow())
                    return;
        }
        name = QLatin1String("TOOLBAR");
        partId = TP_BUTTON;
        if (!(flags & State_Enabled))
            stateId = TS_DISABLED;
        else if (flags & State_Sunken)
            stateId = TS_PRESSED;
        else if (flags & State_MouseOver)
            stateId = flags & State_On ? TS_HOTCHECKED : TS_HOT;
        else if (flags & State_On)
            stateId = TS_CHECKED;
        else
            stateId = TS_NORMAL;
        break;

    case PE_IndicatorButtonDropDown:
        name = QLatin1String("TOOLBAR");
        partId = TP_SPLITBUTTONDROPDOWN;
        if (!(flags & State_Enabled))
            stateId = TS_DISABLED;
        else if (flags & State_Sunken)
            stateId = TS_PRESSED;
        else if (flags & State_MouseOver)
            stateId = flags & State_On ? TS_HOTCHECKED : TS_HOT;
        else if (flags & State_On)
            stateId = TS_CHECKED;
        else