C++ QSizePolicy::horizontalPolicy方法代码示例

QString KPropertySizePolicyDelegate::valueToString(const QVariant& value, const QLocale &locale) const
{
    const QSizePolicy sp(value.value<QSizePolicy>());
    if (locale.language() == QLocale::C) {
        return QString::fromLatin1("%1, %2, %3, %4")
                .arg(KPropertyUtils::keyForEnumValue("SizePolicy", sp.horizontalPolicy()))
                .arg(KPropertyUtils::keyForEnumValue("SizePolicy", sp.verticalPolicy()))
                .arg(sp.horizontalStretch())
                .arg(sp.verticalStretch());
    }
    return QObject::tr("%1, %2, %3, %4", "Size Policy")
        .arg(s_sizePolicyListData->nameForPolicy(sp.horizontalPolicy()))
        .arg(s_sizePolicyListData->nameForPolicy(sp.verticalPolicy()))
        .arg(locale.toString(sp.horizontalStretch()))
        .arg(locale.toString(sp.verticalStretch()));
}

void tst_QLayout::smartMaxSize()
{
    QVector<int> expectedWidths;

    QFile f(QFINDTESTDATA("baseline/smartmaxsize"));

    QCOMPARE(f.open(QIODevice::ReadOnly | QIODevice::Text), true);

    QTextStream stream(&f);

    while(!stream.atEnd()) {
        QString line = stream.readLine(200);
        expectedWidths.append(line.section(QLatin1Char(' '), 6, -1, QString::SectionSkipEmpty).toInt());
    }
    f.close();

    int sizeCombinations[] = { 0, 10, 20, QWIDGETSIZE_MAX};
    QSizePolicy::Policy policies[] = {  QSizePolicy::Fixed,
                                        QSizePolicy::Minimum,
                                        QSizePolicy::Maximum,
                                        QSizePolicy::Preferred,
                                        QSizePolicy::Expanding,
                                        QSizePolicy::MinimumExpanding,
                                        QSizePolicy::Ignored
                                        };
    Qt::Alignment alignments[] = {  0,
                                    Qt::AlignLeft,
                                    Qt::AlignRight,
                                    Qt::AlignHCenter
                                    };

    int expectedIndex = 0;
    int regressionCount = 0;
    for (size_t p = 0; p < sizeof(policies)/sizeof(QSizePolicy::Policy); ++p) {
        QSizePolicy sizePolicy;
        sizePolicy.setHorizontalPolicy(policies[p]);
        for (size_t min = 0; min < sizeof(sizeCombinations)/sizeof(int); ++min) {
            int minSize = sizeCombinations[min];
            for (size_t max = 0; max < sizeof(sizeCombinations)/sizeof(int); ++max) {
                int maxSize = sizeCombinations[max];
                for (size_t sh = 0; sh < sizeof(sizeCombinations)/sizeof(int); ++sh) {
                    int sizeHint = sizeCombinations[sh];
                    for (size_t a = 0; a < sizeof(alignments)/sizeof(int); ++a) {
                        Qt::Alignment align = alignments[a];
                        QSize sz = qSmartMaxSize(QSize(sizeHint, 1), QSize(minSize, 1), QSize(maxSize, 1), sizePolicy, align);
                        int width = sz.width();
                        int expectedWidth = expectedWidths[expectedIndex];
                        if (width != expectedWidth) {
                            qDebug() << "error at index" << expectedIndex << ":" << sizePolicy.horizontalPolicy() << align << minSize << sizeHint << maxSize << width;
                            ++regressionCount;
                        }
                        ++expectedIndex;
                    }
                }
            }
        }
    }
    QCOMPARE(regressionCount, 0);
}

void SizePolicyComposedProperty::setValue(Property *property,
    const QVariant &value, bool rememberOldValue)
{
    const QSizePolicy sp( value.value<QSizePolicy>() );
    property->child("hor_policy")->setValue(sp.horizontalPolicy(), rememberOldValue, false);
    property->child("vert_policy")->setValue(sp.verticalPolicy(), rememberOldValue, false);
    property->child("hor_stretch")->setValue(sp.horizontalStretch(), rememberOldValue, false);
    property->child("vert_stretch")->setValue(sp.verticalStretch(), rememberOldValue, false);
}

/*!
    \reimp
*/
void QWidgetItem::setGeometry(const QRect &rect)
{
    if (isEmpty())
        return;

    QRect r = !wid->testAttribute(Qt::WA_LayoutUsesWidgetRect)
            ? fromLayoutItemRect(wid->d_func(), rect)
            : rect;
    const QSize widgetRectSurplus = r.size() - rect.size(); 

    /* 
       For historical reasons, this code is done using widget rect 
       coordinates, not layout item rect coordinates. However, 
       QWidgetItem's sizeHint(), maximumSize(), and heightForWidth() 
       all work in terms of layout item rect coordinates, so we have to 
       add or subtract widgetRectSurplus here and there. The code could 
       be much simpler if we did everything using layout item rect 
       coordinates and did the conversion right before the call to 
       QWidget::setGeometry(). 
     */ 

    QSize s = r.size().boundedTo(maximumSize() + widgetRectSurplus);  
    int x = r.x();
    int y = r.y();
    if (align & (Qt::AlignHorizontal_Mask | Qt::AlignVertical_Mask)) {
        QSize pref(sizeHint());
        QSizePolicy sp = wid->sizePolicy();
        if (sp.horizontalPolicy() == QSizePolicy::Ignored)
            pref.setWidth(wid->sizeHint().expandedTo(wid->minimumSize()).width());
        if (sp.verticalPolicy() == QSizePolicy::Ignored)
            pref.setHeight(wid->sizeHint().expandedTo(wid->minimumSize()).height());
        pref += widgetRectSurplus;
        if (align & Qt::AlignHorizontal_Mask)
            s.setWidth(qMin(s.width(), pref.width()));
        if (align & Qt::AlignVertical_Mask) {
            if (hasHeightForWidth())
                s.setHeight(qMin(s.height(), 
                                 heightForWidth(s.width() - widgetRectSurplus.width()) 
                                 + widgetRectSurplus.height()));
            else
                s.setHeight(qMin(s.height(), pref.height()));
        }
    }
    Qt::Alignment alignHoriz = QStyle::visualAlignment(wid->layoutDirection(), align);
    if (alignHoriz & Qt::AlignRight)
        x = x + (r.width() - s.width());
    else if (!(alignHoriz & Qt::AlignLeft))
        x = x + (r.width() - s.width()) / 2;

    if (align & Qt::AlignBottom)
        y = y + (r.height() - s.height());
    else if (!(align & Qt::AlignTop))
        y = y + (r.height() - s.height()) / 2;

    wid->setGeometry(x, y, s.width(), s.height());
}

QString SizePolicyDelegate::displayText( const QVariant& value ) const
{
    const QSizePolicy sp(value.value<QSizePolicy>());

    return QString::fromLatin1(SIZEPOLICY_MASK)
        .arg(s_sizePolicyListData->nameForPolicy(sp.horizontalPolicy()))
        .arg(s_sizePolicyListData->nameForPolicy(sp.verticalPolicy()))
        .arg(sp.horizontalStretch())
        .arg(sp.verticalStretch());
}

static QString sizePolicyToString(const QSizePolicy &p)
{
    QString rc; {
        QTextStream str(&rc);
        str << "Control=" << p.controlType() << " expdirs=" << p.expandingDirections()
            << " hasHeightForWidth=" << p.hasHeightForWidth()
            << " H: Policy=" << p.horizontalPolicy()
            << " stretch=" << p.horizontalStretch()
            << " V: Policy=" << p.verticalPolicy()
            << " stretch=" << p.verticalStretch();
    }
    return rc;
}

QString LayoutDumper::toString(const QSizePolicy& policy)
{
    QString result = QString("(%1, %2)")
            .arg(toString(policy.horizontalPolicy()))
            .arg(toString(policy.verticalPolicy()));
    if (policy.hasHeightForWidth()) {
        result += " [hasHeightForWidth]";
    }
    if (policy.hasWidthForHeight()) {
        result += " [hasWidthForHeight]";
    }
    return result;
}

    void verticallyStretchButtons() {
        /// do not vertically stretch if using transparent style sheet
        if (makeInnerWidgetsTransparent) return;

        /// check each widget inside MenuLineEdit
        for (int i = hLayout->count() - 1; i >= 0; --i) {
            QWidget *w = hLayout->itemAt(i)->widget();
            if (w != NULL && w != m_singleLineEditText && w != m_multiLineEditText) {
                /// for all widgets except the main editing widget: change tab focus policy
                QSizePolicy sp = w->sizePolicy();
                w->setSizePolicy(sp.horizontalPolicy(), QSizePolicy::MinimumExpanding);
            }
        }
    }

static PyObject *meth_QSizePolicy_horizontalPolicy(PyObject *sipSelf, PyObject *sipArgs)
{
    PyObject *sipParseErr = NULL;

    {
        QSizePolicy *sipCpp;

        if (sipParseArgs(&sipParseErr, sipArgs, "B", &sipSelf, sipType_QSizePolicy, &sipCpp))
        {
            QSizePolicy::Policy sipRes;

            Py_BEGIN_ALLOW_THREADS
            sipRes = sipCpp->horizontalPolicy();
            Py_END_ALLOW_THREADS

            return sipConvertFromEnum(sipRes,sipType_QSizePolicy_Policy);
        }
    }

void AnimatedFrame::updateSizeHints()
{
	if(widget_) {
		QSize hint = widget_->minimumSizeHint();
		if(!hint.isValid())
			hint = widget_->sizeHint();

		QSizePolicy policy = widget_->sizePolicy();

		if(edge_ == kNorth || edge_ == kSouth) {
			int minimum = widget_->minimumHeight();
			int maximum = widget_->maximumHeight();

			minimumSizeHint_.setWidth(0);
			minimumSizeHint_.setHeight(qBound(minimum, hint.height(), maximum));

			setSizePolicy(policy.horizontalPolicy(), QSizePolicy::Maximum);
		}
		else {
			int minimum = widget_->minimumWidth();
			int maximum = widget_->maximumWidth();

			minimumSizeHint_.setWidth(qBound(minimum, hint.width(), maximum));
			minimumSizeHint_.setHeight(0);

			setSizePolicy(QSizePolicy::Maximum, policy.verticalPolicy());
		}

		setMinimumSize(widget_->minimumSize());
		setMaximumSize(widget_->maximumSize());
	}
	else {
		minimumSizeHint_ = QSize();
		setSizePolicy(QSizePolicy::Preferred, QSizePolicy::Preferred);
	}

	sizeHint_ = minimumSizeHint_;

	if(isUnfolded())
		updateGeometry();
}

osg::GraphicsContext::Traits* GraphicsWindowQt::createTraits( const QGLWidget* widget )
{
    osg::GraphicsContext::Traits *traits = new osg::GraphicsContext::Traits;

    qglFormat2traits( widget->format(), traits );

    QRect r = widget->geometry();
    traits->x = r.x();
    traits->y = r.y();
    traits->width = r.width();
    traits->height = r.height();

    traits->windowName = widget->windowTitle().toLocal8Bit().data();
    Qt::WindowFlags f = widget->windowFlags();
    traits->windowDecoration = ( f & Qt::WindowTitleHint ) &&
                            ( f & Qt::WindowMinMaxButtonsHint ) &&
                            ( f & Qt::WindowSystemMenuHint );
    QSizePolicy sp = widget->sizePolicy();
    traits->supportsResize = sp.horizontalPolicy() != QSizePolicy::Fixed ||
                            sp.verticalPolicy() != QSizePolicy::Fixed;

    return traits;
}

//.........这里部分代码省略.........
        return true;
#endif

    case QVariant::KeySequence: {
        DomString *s = new DomString();
        s->setText(qvariant_cast<QKeySequence>(v).toString(QKeySequence::PortableText));
        dom_prop->setElementString(s);
        }
        return true;

    case QVariant::Locale: {
        DomLocale *dom = new DomLocale();
        const QLocale locale = qvariant_cast<QLocale>(v);

        const QMetaEnum language_enum = metaEnum<QAbstractFormBuilderGadget>("language");
        const QMetaEnum country_enum = metaEnum<QAbstractFormBuilderGadget>("country");

        dom->setAttributeLanguage(QLatin1String(language_enum.valueToKey(locale.language())));
        dom->setAttributeCountry(QLatin1String(country_enum.valueToKey(locale.country())));

        dom_prop->setElementLocale(dom);
        }
        return true;

    case QVariant::SizePolicy: {
        DomSizePolicy *dom = new DomSizePolicy();
        const QSizePolicy sizePolicy = qvariant_cast<QSizePolicy>(v);

        dom->setElementHorStretch(sizePolicy.horizontalStretch());
        dom->setElementVerStretch(sizePolicy.verticalStretch());

        const QMetaEnum sizeType_enum = metaEnum<QAbstractFormBuilderGadget>("sizeType");

        dom->setAttributeHSizeType(QLatin1String(sizeType_enum.valueToKey(sizePolicy.horizontalPolicy())));
        dom->setAttributeVSizeType(QLatin1String(sizeType_enum.valueToKey(sizePolicy.verticalPolicy())));

        dom_prop->setElementSizePolicy(dom);
    }
        return true;

    case QVariant::Date: {
        DomDate *dom = new DomDate();
        const QDate date = qvariant_cast<QDate>(v);

        dom->setElementYear(date.year());
        dom->setElementMonth(date.month());
        dom->setElementDay(date.day());

        dom_prop->setElementDate(dom);
        }
        return true;

    case QVariant::Time: {
        DomTime *dom = new DomTime();
        const QTime time = qvariant_cast<QTime>(v);

        dom->setElementHour(time.hour());
        dom->setElementMinute(time.minute());
        dom->setElementSecond(time.second());

        dom_prop->setElementTime(dom);
        }
        return true;

    case QVariant::DateTime: {
        DomDateTime *dom = new DomDateTime();

QDebug operator<<(QDebug dbg, const QSizePolicy &p)
{
    dbg.nospace() << "QSizePolicy(horizontalPolicy = " << p.horizontalPolicy()
                  << ", verticalPolicy = " << p.verticalPolicy() << ')';
    return dbg.space();
}