qpropertyeditor_items.cpp

来自「QT 开发环境里面一个很重要的文件」· C++ 代码 · 共 1,753 行 · 第 1/4 页

   if (qVariantCanConvert<EnumType>(value)) {
        EnumType e = qvariant_cast<EnumType>(value);
        m_value = e.value;
    } else if (qVariantCanConvert<FlagType>(value)) {
        FlagType e = qvariant_cast<FlagType>(value);
        m_value = e.value;
    } else {
        m_value = value;
    }
}

QString MapProperty::toString() const
{
    return m_items.key(m_value);
}

int MapProperty::indexOf(const QVariant &value) const
{
    QString key = m_items.key(value);
    return comboKeys.indexOf(key);
}

QWidget *MapProperty::createEditor(QWidget *parent, const QObject *target, const char *receiver) const
{
    QComboBox *combo = new QComboBox(parent);
    combo->view()->setTextElideMode(Qt::ElideLeft);
    combo->setFrame(0);

    combo->addItems(comboKeys);
    QObject::connect(combo, SIGNAL(activated(int)), target, receiver);

    return combo;
}

void MapProperty::updateEditorContents(QWidget *editor)
{
    if (QComboBox *combo = qobject_cast<QComboBox*>(editor)) {
        combo->setCurrentIndex(indexOf(m_value));
    }
}

void MapProperty::updateValue(QWidget *editor)
{
    if (QComboBox *combo = qobject_cast<QComboBox*>(editor)) {
        QString key = combo->currentText();
        QVariant newValue = m_items.value(key);

        if (newValue != m_value) {
            m_value = newValue;
            setChanged(true);
        }
    }
}

// -------------------------------------------------------------------------
FlagsProperty::FlagsProperty(const QMap<QString, QVariant> &items, unsigned int value,
                             const QString &name)
    : MapProperty(items, QVariant(value), name)
{
}

QWidget *FlagsProperty::createEditor(QWidget *parent, const QObject *target, const char *receiver) const
{
    QList<FlagBoxModelItem> l;
    QMapIterator<QString, QVariant> it(items());
    unsigned int v = m_value.toUInt();
    int initialIndex = -1;
    int i = 0;
    while (it.hasNext()) {
        it.next();
        unsigned int value = it.value().toUInt();
        bool checked = (value == 0) ? (v == 0) : ((value & v) == value);
        l.append(FlagBoxModelItem(it.key(), value, checked));
        if ((value & v) == value) {
            if (initialIndex == -1)
                initialIndex = i;
            else if (FlagBoxModel::bitcount(value) > FlagBoxModel::bitcount(l.at(initialIndex).value()))
                initialIndex = i;
        }
        ++i;
    }

    FlagBox *editor = new FlagBox(parent);
    editor->setItems(l);
    editor->setCurrentIndex(initialIndex);
    QObject::connect(editor, SIGNAL(activated(int)), target, receiver);
    return editor;
}

void FlagsProperty::updateEditorContents(QWidget *editor)
{
    FlagBox *box = qobject_cast<FlagBox*>(editor);
    if (box == 0)
        return;

    box->view()->reset();
}

void FlagsProperty::updateValue(QWidget *editor)
{
    FlagBox *box = qobject_cast<FlagBox*>(editor);
    if ((box == 0) || (box->currentIndex() < 0))
        return;

    unsigned int newValue = 0;

    FlagBoxModelItem &thisItem = box->item(box->currentIndex());
    if (thisItem.value() == 0) {
        // Uncheck all items except 0-mask
        for (int i=0; i<box->count(); ++i)
            box->item(i).setChecked(i == box->currentIndex());
    } else {
        // Compute new value, without including (additional) supermasks
        if (thisItem.isChecked())
            newValue = thisItem.value();
        for (int i=0; i<box->count(); ++i) {
            FlagBoxModelItem &item = box->item(i);
            if (item.isChecked() && (FlagBoxModel::bitcount(item.value()) == 1))
                newValue |= item.value();
        }
        if (newValue == 0) {
            // Uncheck all items except 0-mask
            for (int i=0; i<box->count(); ++i) {
                FlagBoxModelItem &item = box->item(i);
                item.setChecked(item.value() == 0);
            }
        } else if (newValue == m_value) {
            if (!thisItem.isChecked() && (FlagBoxModel::bitcount(thisItem.value()) > 1)) {
                // We unchecked something, but the original value still holds
                thisItem.setChecked(true);
            }
        } else {
            // Make sure 0-mask is not selected
            for (int i=0; i<box->count(); ++i) {
                FlagBoxModelItem &item = box->item(i);
                if (item.value() == 0)
                        item.setChecked(false);
            }
            // Check/uncheck proper masks
            if (thisItem.isChecked()) {
                // Make sure submasks and supermasks are selected
                for (int i=0; i<box->count(); ++i) {
                    FlagBoxModelItem &item = box->item(i);
                    if ((item.value() != 0) && ((item.value() & newValue) == item.value()) && !item.isChecked())
                        item.setChecked(true);
                }
            } else {
                // Make sure supermasks are not selected if they're no longer valid
                for (int i=0; i<box->count(); ++i) {
                    FlagBoxModelItem &item = box->item(i);
                    if (item.isChecked() && ((item.value() == thisItem.value()) || ((item.value() & newValue) != item.value())))
                        item.setChecked(false);
                }
            }
        }
    }

    if (newValue != m_value) {
        m_value = newValue;
        setChanged(true);
    }
}

// -------------------------------------------------------------------------
SizePolicyProperty::SizePolicyProperty(const QSizePolicy &value, const QString &name)
    : AbstractPropertyGroup(name)
{
    QStringList lst;
    lst << QString::fromUtf8("Fixed")
        << QString::fromUtf8("Minimum")
        << QString::fromUtf8("Maximum")
        << QString::fromUtf8("Preferred")
        << QString::fromUtf8("MinimumExpanding")
        << QString::fromUtf8("Expanding")
        << QString::fromUtf8("Ignored");

    IProperty *i = 0;
    i = new ListProperty(lst, size_type_to_int(value.horizontalPolicy()), QLatin1String("hSizeType"));
    i->setFake(true);
    i->setParent(this);
    m_properties << i;

    i = new ListProperty(lst, size_type_to_int(value.verticalPolicy()), QLatin1String("vSizeType"));
    i->setFake(true);
    i->setParent(this);
    m_properties << i;

    i = new IntProperty(value.horizontalStretch(), QLatin1String("horizontalStretch"));
    i->setFake(true);
    i->setParent(this);
    m_properties << i;

    i = new IntProperty(value.verticalStretch(), QLatin1String("verticalStretch"));
    i->setFake(true);
    i->setParent(this);
    m_properties << i;
}

QVariant SizePolicyProperty::value() const
{
    QSizePolicy sizePolicy;
    sizePolicy.setHorizontalPolicy(int_to_size_type(propertyAt(0)->value().toInt()));
    sizePolicy.setVerticalPolicy(int_to_size_type(propertyAt(1)->value().toInt()));
    sizePolicy.setHorizontalStretch(propertyAt(2)->value().toInt());
    sizePolicy.setVerticalStretch(propertyAt(3)->value().toInt());
    return qVariantFromValue(sizePolicy);
}

void SizePolicyProperty::setValue(const QVariant &value)
{
    QSizePolicy sizePolicy = qvariant_cast<QSizePolicy>(value);

    propertyAt(0)->setValue(size_type_to_int(sizePolicy.horizontalPolicy()));
    propertyAt(1)->setValue(size_type_to_int(sizePolicy.verticalPolicy()));
    propertyAt(2)->setValue(sizePolicy.horizontalStretch());
    propertyAt(3)->setValue(sizePolicy.verticalStretch());
}

QVariant SizePolicyProperty::decoration() const
{
    return QVariant();
}

QString SizePolicyProperty::toString() const
{
    return AbstractPropertyGroup::toString();
}

// -------------------------------------------------------------------------
DateTimeProperty::DateTimeProperty(const QDateTime &value, const QString &name)
    : AbstractProperty<QDateTime>(value, name)
{
}

void DateTimeProperty::setValue(const QVariant &value)
{
    m_value = value.toDateTime();
}

QString DateTimeProperty::toString() const
{
    return m_value.toString();
}

QWidget *DateTimeProperty::createEditor(QWidget *parent, const QObject *target, const char *receiver) const
{
    QDateTimeEdit *lineEdit = new QDateTimeEdit(parent);
    QObject::connect(lineEdit, SIGNAL(dateTimeChanged(QDateTime)), target, receiver);
    return lineEdit;
}

void DateTimeProperty::updateEditorContents(QWidget *editor)
{
    if (QDateTimeEdit *lineEdit = qobject_cast<QDateTimeEdit*>(editor)) {
        lineEdit->setDateTime(m_value);
    }
}

void DateTimeProperty::updateValue(QWidget *editor)
{
    if (QDateTimeEdit *lineEdit = qobject_cast<QDateTimeEdit*>(editor)) {
        QDateTime newValue = lineEdit->dateTime();

        if (newValue != m_value) {
            m_value = newValue;
            setChanged(true);
        }

    }
}

// -------------------------------------------------------------------------
DateProperty::DateProperty(const QDate &value, const QString &name)
    : AbstractProperty<QDate>(value, name)
{
}

void DateProperty::setValue(const QVariant &value)
{
    m_value = value.toDate();
}

QString DateProperty::toString() const
{
    return m_value.toString();
}

QWidget *DateProperty::createEditor(QWidget *parent, const QObject *target, const char *receiver) const
{
    QDateEdit *lineEdit = new QDateEdit(parent);
    QObject::connect(lineEdit, SIGNAL(dateChanged(QDate)), target, receiver);
    return lineEdit;
}

void DateProperty::updateEditorContents(QWidget *editor)
{
    if (QDateEdit *lineEdit = qobject_cast<QDateEdit*>(editor)) {
        lineEdit->setDate(m_value);
    }
}

void DateProperty::updateValue(QWidget *editor)
{
    if (QDateEdit *lineEdit = qobject_cast<QDateEdit*>(editor)) {
        QDate newValue = lineEdit->date();

        if (newValue != m_value) {
            m_value = newValue;
            setChanged(true);
        }

    }
}

// -------------------------------------------------------------------------
TimeProperty::TimeProperty(const QTime &value, const QString &name)
    : AbstractProperty<QTime>(value, name)
{
}

void TimeProperty::setValue(const QVariant &value)
{
    m_value = value.toTime();
}

QString TimeProperty::toString() const
{
    return m_value.toString();
}

QWidget *TimeProperty::createEditor(QWidget *parent, const QObject *target, const char *receiver) const
{
    QTimeEdit *lineEdit = new QTimeEdit(parent);
    QObject::connect(lineEdit, SIGNAL(timeChanged(QTime)), target, receiver);
    return lineEdit;
}

void TimeProperty::updateEditorContents(QWidget *editor)
{
    if (QTimeEdit *lineEdit = qobject_cast<QTimeEdit*>(editor)) {
        lineEdit->setTime(m_value);
    }
}

void TimeProperty::updateValue(QWidget *editor)
{
    if (QTimeEdit *lineEdit = qobject_cast<QTimeEdit*>(editor)) {
        QTime newValue = lineEdit->time();

        if (newValue != m_value) {
            m_value = newValue;
            setChanged(true);
        }

    }
}

// -------------------------------------------------------------------------
CursorProperty::CursorProperty(const QCursor &value, const QString &name)
    : AbstractProperty<QCursor>(value, name)
{
}

void CursorProperty::setValue(const QVariant &value)
{
    m_value = qvariant_cast<QCursor>(value);
}

QString CursorProperty::toString() const
{
    return cursorName(m_value.shape());
}

QVariant CursorProperty::decoration() const
{
    return qVariantFromValue(cursorPixmap(m_value.shape()));
}

QWidget *CursorProperty::createEditor(QWidget *parent, const QObject *target, const char *receiver) const
{
    QComboBox *combo = new QComboBox(parent);
    combo->view()->setTextElideMode(Qt::ElideLeft);
    combo->setFrame(0);

    addCursor(combo, Qt::ArrowCursor);
    addCursor(combo, Qt::UpArrowCursor);
    addCursor(combo, Qt::CrossCursor);
    addCursor(combo, Qt::WaitCursor);
    addCursor(combo, Qt::IBeamCursor);
    addCursor(combo, Qt::SizeVerCursor);
    addCursor(combo, Qt::SizeHorCursor);
    addCursor(combo, Qt::SizeBDiagCursor);
    addCursor(combo, Qt::SizeFDiagCursor);
    addCursor(combo, Qt::SizeAllCursor);
    addCursor(combo, Qt::BlankCursor);
    addCursor(combo, Qt::SplitVCursor);
    addCursor(combo, Qt::SplitHCursor);
    addCursor(combo, Qt::PointingHandCursor);
    addCursor(combo, Qt::ForbiddenCursor);

    QObject::connect(combo, SIGNAL(activated(int)), target, receiver);

    return combo;
}

void CursorProperty::updateEditorContents(QWidget *editor)
{
    if (QComboBox *combo = qobject_cast<QComboBox*>(editor)) {
        combo->setCurrentIndex(m_value.shape());
    }
}

void CursorProperty::updateValue(QWidget *editor)
{
    if (QComboBox *combo = qobject_cast<QComboBox*>(editor)) {
        QCursor newValue(static_cast<Qt::CursorShape>(combo->currentIndex()));

        if (newValue.shape() != m_value.shape()) {
            m_value = newValue;
            setChanged(true);
        }
    }
}

QString CursorProperty::cursorName(int shape)
{
    switch (shape) {
    case Qt::ArrowCursor: return QString::fromUtf8("Arrow");
    case Qt::UpArrowCursor: return QString::fromUtf8("Up-Arrow");
    case Qt::CrossCursor: return QString::fromUtf8("Cross");
    case Qt::WaitCursor: return QString::fromUtf8("Waiting");
    case Qt::IBeamCursor: return QString::fromUtf8("IBeam");
    case Qt::SizeVerCursor: return QString::fromUtf8("Size Vertical");
    case Qt::SizeHorCursor: return QString::fromUtf8("Size Horizontal");
    case Qt::SizeBDiagCursor: return QString::fromUtf8("Size Slash");
    case Qt::SizeFDiagCursor: return QString::fromUtf8("Size Backslash");
    case Qt::SizeAllCursor: return QString::fromUtf8("Size All");
    case Qt::BlankCursor: return QString::fromUtf8("Blank");
    case Qt::SplitVCursor: return QString::fromUtf8("Split Vertical");