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author | Aaron Kennedy <aaron.kennedy@nokia.com> | 2010-02-26 01:44:51 (GMT) |
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committer | Aaron Kennedy <aaron.kennedy@nokia.com> | 2010-02-26 01:48:56 (GMT) |
commit | 71412e3d9b9152cbbc42245751fc197672fc7b08 (patch) | |
tree | 72ef51ddd77064ad1442f5ba647ce2581a5ceceb /src | |
parent | e1abb8b075c8fc24bc768619ca2dbe1204431101 (diff) | |
download | Qt-71412e3d9b9152cbbc42245751fc197672fc7b08.zip Qt-71412e3d9b9152cbbc42245751fc197672fc7b08.tar.gz Qt-71412e3d9b9152cbbc42245751fc197672fc7b08.tar.bz2 |
Remove unnecessary QDeclarativeProperty::Type enum values
Diffstat (limited to 'src')
-rw-r--r-- | src/declarative/qml/qdeclarativeproperty.cpp | 61 | ||||
-rw-r--r-- | src/declarative/qml/qdeclarativeproperty.h | 3 | ||||
-rw-r--r-- | src/declarative/qml/qdeclarativeproperty_p.h | 1 |
3 files changed, 43 insertions, 22 deletions
diff --git a/src/declarative/qml/qdeclarativeproperty.cpp b/src/declarative/qml/qdeclarativeproperty.cpp index 7ead1b5..fbea6ac 100644 --- a/src/declarative/qml/qdeclarativeproperty.cpp +++ b/src/declarative/qml/qdeclarativeproperty.cpp @@ -63,10 +63,30 @@ QT_BEGIN_NAMESPACE /*! - \class QDeclarativeProperty - \brief The QDeclarativeProperty class abstracts accessing QML properties. - \internal - */ +\class QDeclarativeProperty +\brief The QDeclarativeProperty class abstracts accessing properties on objects created from QML. + +As QML uses Qt's meta-type system all of the existing QMetaObject classes can be used to introspect +and interact with objects created by QML. However, some of the new features provided by QML - such +as type safety and attached properties - are most easily used through the QDeclarativeProperty class +that simplifies some of their natural complexity. + +Unlike QMetaProperty which represents a property on a class type, QDeclarativeProperty encapsulates +a property on a specific object instance. To read a property's value, programmers create a +QDeclarativeProperty instance and call the read() method. Likewise to write a property value the +write() method is used. + +\code + +QObject *object = declarativeComponent.create(); + +QDeclarativeProperty property(object, "font.pixelSize"); +qWarning() << "Current pixel size:" << property.read().toInt(); +property.write(24); +qWarning() << "Pixel size should now be 24:" << property.read().toInt(); + +\endcode +*/ /*! Create an invalid QDeclarativeProperty. @@ -298,7 +318,7 @@ QDeclarativePropertyPrivate::propertyTypeCategory() const { uint type = q->type(); - if (type & QDeclarativeProperty::ValueTypeProperty) { + if (isValueType()) { return QDeclarativeProperty::Normal; } else if (type & QDeclarativeProperty::Property) { int type = propertyType(); @@ -323,7 +343,7 @@ QDeclarativePropertyPrivate::propertyTypeCategory() const */ const char *QDeclarativeProperty::propertyTypeName() const { - if (type() & ValueTypeProperty) { + if (d->isValueType()) { QDeclarativeEnginePrivate *ep = QDeclarativeEnginePrivate::get(d->context); QDeclarativeValueType *valueType = 0; @@ -365,10 +385,15 @@ int QDeclarativeProperty::propertyType() const return d->propertyType(); } +bool QDeclarativePropertyPrivate::isValueType() const +{ + return valueType.valueTypeCoreIdx != -1; +} + int QDeclarativePropertyPrivate::propertyType() const { uint type = q->type(); - if (type & QDeclarativeProperty::ValueTypeProperty) { + if (isValueType()) { return valueType.valueTypePropType; } else if (type & QDeclarativeProperty::Property) { if (core.propType == (int)QVariant::LastType) @@ -387,8 +412,6 @@ QDeclarativeProperty::Type QDeclarativeProperty::type() const { if (d->core.flags & QDeclarativePropertyCache::Data::IsFunction) return SignalProperty; - else if (d->valueType.valueTypeCoreIdx != -1) - return (Type)(Property | ValueTypeProperty); else if (d->core.isValid()) return (Type)(Property | ((d->isDefaultProperty)?Default:0)); else @@ -495,7 +518,7 @@ QString QDeclarativeProperty::name() const if (!d->isNameCached) { // ### if (!d->object) { - } else if (type() & ValueTypeProperty) { + } else if (d->isValueType()) { QString rv = d->core.name(d->object) + QLatin1Char('.'); QDeclarativeEnginePrivate *ep = d->context?QDeclarativeEnginePrivate::get(d->context->engine()):0; @@ -709,8 +732,7 @@ QVariant QDeclarativeProperty::read() const QVariant QDeclarativePropertyPrivate::readValueProperty() { - uint type = q->type(); - if(type & QDeclarativeProperty::ValueTypeProperty) { + if(isValueType()) { QDeclarativeEnginePrivate *ep = QDeclarativeEnginePrivate::get(context); QDeclarativeValueType *valueType = 0; @@ -789,8 +811,7 @@ bool QDeclarativePropertyPrivate::writeValueProperty(const QVariant &value, Writ } bool rv = false; - uint type = q->type(); - if (type & QDeclarativeProperty::ValueTypeProperty) { + if (isValueType()) { QDeclarativeEnginePrivate *ep = QDeclarativeEnginePrivate::get(context); QDeclarativeValueType *writeBack = 0; @@ -1097,7 +1118,7 @@ int QDeclarativePropertyPrivate::valueTypeCoreIndex(const QDeclarativeProperty & } struct SerializedData { - QDeclarativeProperty::Type type; + bool isValueType; QDeclarativePropertyCache::Data core; }; @@ -1112,7 +1133,7 @@ QByteArray QDeclarativePropertyPrivate::saveValueType(const QMetaObject *metaObj QMetaProperty subProp = subObject->property(subIndex); ValueTypeSerializedData sd; - sd.type = QDeclarativeProperty::ValueTypeProperty; + sd.isValueType = true; sd.core.load(metaObject->property(index)); sd.valueType.flags = QDeclarativePropertyCache::Data::flagsForProperty(subProp); sd.valueType.valueTypeCoreIdx = subIndex; @@ -1126,7 +1147,7 @@ QByteArray QDeclarativePropertyPrivate::saveValueType(const QMetaObject *metaObj QByteArray QDeclarativePropertyPrivate::saveProperty(const QMetaObject *metaObject, int index) { SerializedData sd; - sd.type = QDeclarativeProperty::Property; + sd.isValueType = false; sd.core.load(metaObject->property(index)); QByteArray rv((const char *)&sd, sizeof(sd)); @@ -1145,12 +1166,12 @@ QDeclarativePropertyPrivate::restore(const QByteArray &data, QObject *object, QD prop.d->context = ctxt; const SerializedData *sd = (const SerializedData *)data.constData(); - if (sd->type == QDeclarativeProperty::Property) { - prop.d->core = sd->core; - } else if(sd->type == QDeclarativeProperty::ValueTypeProperty) { + if (sd->isValueType) { const ValueTypeSerializedData *vt = (const ValueTypeSerializedData *)sd; prop.d->core = vt->core; prop.d->valueType = vt->valueType; + } else { + prop.d->core = sd->core; } return prop; diff --git a/src/declarative/qml/qdeclarativeproperty.h b/src/declarative/qml/qdeclarativeproperty.h index be1065e..3504a15 100644 --- a/src/declarative/qml/qdeclarativeproperty.h +++ b/src/declarative/qml/qdeclarativeproperty.h @@ -73,8 +73,7 @@ public: enum Type { Invalid = 0x00, Property = 0x01, SignalProperty = 0x02, - Default = 0x08, - ValueTypeProperty = 0x10 + Default = 0x08 }; QDeclarativeProperty(); diff --git a/src/declarative/qml/qdeclarativeproperty_p.h b/src/declarative/qml/qdeclarativeproperty_p.h index d0ad09c..eb5fa9a 100644 --- a/src/declarative/qml/qdeclarativeproperty_p.h +++ b/src/declarative/qml/qdeclarativeproperty_p.h @@ -97,6 +97,7 @@ public: QMetaMethod findSignal(QObject *, const QString &); + bool isValueType() const; int propertyType() const; QDeclarativeProperty::PropertyTypeCategory propertyTypeCategory() const; |