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QSapecNG
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QSapecNG
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The QtVariantPropertyManager class provides and manages QVariant based properties. More...
Public Slots | |
| virtual void | setValue (QtProperty *property, const QVariant &val) |
| virtual void | setAttribute (QtProperty *property, const QString &attribute, const QVariant &value) |
Signals | |
| void | valueChanged (QtProperty *property, const QVariant &val) |
| void | attributeChanged (QtProperty *property, const QString &attribute, const QVariant &val) |
Public Member Functions | |
| QtVariantPropertyManager (QObject *parent=0) | |
| ~QtVariantPropertyManager () | |
| virtual QtVariantProperty * | addProperty (int propertyType, const QString &name=QString()) |
| int | propertyType (const QtProperty *property) const |
| int | valueType (const QtProperty *property) const |
| QtVariantProperty * | variantProperty (const QtProperty *property) const |
| virtual bool | isPropertyTypeSupported (int propertyType) const |
| virtual int | valueType (int propertyType) const |
| virtual QStringList | attributes (int propertyType) const |
| virtual int | attributeType (int propertyType, const QString &attribute) const |
| virtual QVariant | value (const QtProperty *property) const |
| virtual QVariant | attributeValue (const QtProperty *property, const QString &attribute) const |
Static Public Member Functions | |
| static int | enumTypeId () |
| static int | flagTypeId () |
| static int | groupTypeId () |
| static int | iconMapTypeId () |
Protected Member Functions | |
| virtual bool | hasValue (const QtProperty *property) const |
| QString | valueText (const QtProperty *property) const |
| QIcon | valueIcon (const QtProperty *property) const |
| virtual void | initializeProperty (QtProperty *property) |
| virtual void | uninitializeProperty (QtProperty *property) |
| virtual QtProperty * | createProperty () |
The QtVariantPropertyManager class provides and manages QVariant based properties.
QtVariantPropertyManager provides the addProperty() function which creates QtVariantProperty objects. The QtVariantProperty class is a convenience class handling QVariant based properties inheriting QtProperty. A QtProperty object created by a QtVariantPropertyManager instance can be converted into a QtVariantProperty object using the variantProperty() function.
The property's value can be retrieved using the value(), and set using the setValue() slot. In addition the property's type, and the type of its value, can be retrieved using the propertyType() and valueType() functions respectively.
A property's type is a QVariant::Type enumerator value, and usually a property's type is the same as its value type. But for some properties the types differ, for example for enums, flags and group types in which case QtVariantPropertyManager provides the enumTypeId(), flagTypeId() and groupTypeId() functions, respectively, to identify their property type (the value types are QVariant::Int for the enum and flag types, and QVariant::Invalid for the group type).
Use the isPropertyTypeSupported() function to check if a particular property type is supported. The currently supported property types are:
Property Type Property Type Id int QVariant::Int double QVariant::Double bool QVariant::Bool QString QVariant::String QDate QVariant::Date QTime QVariant::Time QDateTime QVariant::DateTime QKeySequence QVariant::KeySequence QChar QVariant::Char QLocale QVariant::Locale QPoint QVariant::Point QPointF QVariant::PointF QSize QVariant::Size QSizeF QVariant::SizeF QRect QVariant::Rect QRectF QVariant::RectF QColor QVariant::Color QSizePolicy QVariant::SizePolicy QFont QVariant::Font QCursor QVariant::Cursor enum enumTypeId() flag flagTypeId() group groupTypeId()
Each property type can provide additional attributes, e.g. QVariant::Int and QVariant::Double provides minimum and maximum values. The currently supported attributes are:
Property Type Attribute Name Attribute Type int minimum QVariant::Int maximum QVariant::Int singleStep QVariant::Int double minimum QVariant::Double maximum QVariant::Double singleStep QVariant::Double decimals QVariant::Int QString regExp QVariant::RegExp QDate minimum QVariant::Date maximum QVariant::Date QPointF decimals QVariant::Int QSize minimum QVariant::Size maximum QVariant::Size QSizeF minimum QVariant::SizeF maximum QVariant::SizeF decimals QVariant::Int QRect constraint QVariant::Rect QRectF constraint QVariant::RectF decimals QVariant::Int enum enumNames QVariant::StringList enumIcons iconMapTypeId() flag flagNames QVariant::StringList
The attributes for a given property type can be retrieved using the attributes() function. Each attribute has a value type which can be retrieved using the attributeType() function, and a value accessible through the attributeValue() function. In addition, the value can be set using the setAttribute() slot.
QtVariantManager also provides the valueChanged() signal which is emitted whenever a property created by this manager change, and the attributeChanged() signal which is emitted whenever an attribute of such a property changes.
| QtVariantPropertyManager::QtVariantPropertyManager | ( | QObject * | parent = 0 | ) |
Creates a manager with the given parent.
Destroys this manager, and all the properties it has created.
| QtVariantProperty * QtVariantPropertyManager::addProperty | ( | int | propertyType, |
| const QString & | name = QString() |
||
| ) | [virtual] |
Creates and returns a variant property of the given propertyType with the given name.
If the specified propertyType is not supported by this variant manager, this function returns 0.
Do not use the inherited QtAbstractPropertyManager::addProperty() function to create a variant property (that function will always return 0 since it will not be clear what type the property should have).
| void QtVariantPropertyManager::attributeChanged | ( | QtProperty * | property, |
| const QString & | attribute, | ||
| const QVariant & | value | ||
| ) | [signal] |
This signal is emitted whenever an attribute of a property created by this manager changes its value, passing a pointer to the property, the attribute and the new value as parameters.
| QStringList QtVariantPropertyManager::attributes | ( | int | propertyType | ) | const [virtual] |
Returns a list of the given propertyType 's attributes.
| int QtVariantPropertyManager::attributeType | ( | int | propertyType, |
| const QString & | attribute | ||
| ) | const [virtual] |
Returns the type of the specified attribute of the given propertyType.
If the given propertyType is not supported by this manager, or if the given propertyType does not possess the specified attribute, this function returns QVariant::Invalid.
| QVariant QtVariantPropertyManager::attributeValue | ( | const QtProperty * | property, |
| const QString & | attribute | ||
| ) | const [virtual] |
Returns the given property's value for the specified attribute
If the given property was not created by this manager, or if the specified attribute does not exist, this function returns an invalid variant.
| QtProperty * QtVariantPropertyManager::createProperty | ( | ) | [protected, virtual] |
Reimplemented from QtAbstractPropertyManager.
| int QtVariantPropertyManager::enumTypeId | ( | ) | [static] |
Returns the type id for an enum property.
Note that the property's value type can be retrieved using the valueType() function (which is QVariant::Int for the enum property type).
| int QtVariantPropertyManager::flagTypeId | ( | ) | [static] |
Returns the type id for a flag property.
Note that the property's value type can be retrieved using the valueType() function (which is QVariant::Int for the flag property type).
| int QtVariantPropertyManager::groupTypeId | ( | ) | [static] |
Returns the type id for a group property.
Note that the property's value type can be retrieved using the valueType() function (which is QVariant::Invalid for the group property type, since it doesn't provide any value).
| bool QtVariantPropertyManager::hasValue | ( | const QtProperty * | property | ) | const [protected, virtual] |
Reimplemented from QtAbstractPropertyManager.
| int QtVariantPropertyManager::iconMapTypeId | ( | ) | [static] |
Returns the type id for a icon map attribute.
Note that the property's attribute type can be retrieved using the attributeType() function.
| void QtVariantPropertyManager::initializeProperty | ( | QtProperty * | property | ) | [protected, virtual] |
Implements QtAbstractPropertyManager.
| bool QtVariantPropertyManager::isPropertyTypeSupported | ( | int | propertyType | ) | const [virtual] |
Returns true if the given propertyType is supported by this variant manager; otherwise false.
| int QtVariantPropertyManager::propertyType | ( | const QtProperty * | property | ) | const |
Returns the given property's type.
| void QtVariantPropertyManager::setAttribute | ( | QtProperty * | property, |
| const QString & | attribute, | ||
| const QVariant & | value | ||
| ) | [virtual, slot] |
Sets the value of the specified attribute of the given property, to value.
The new value's type must be of the type returned by attributeType(), or of a type that can be converted to attributeType() using the QVariant::canConvert() function, otherwise this function does nothing.
| void QtVariantPropertyManager::setValue | ( | QtProperty * | property, |
| const QVariant & | value | ||
| ) | [virtual, slot] |
Sets the value of the given property to value.
The specified value must be of a type returned by valueType(), or of type that can be converted to valueType() using the QVariant::canConvert() function, otherwise this function does nothing.
| void QtVariantPropertyManager::uninitializeProperty | ( | QtProperty * | property | ) | [protected, virtual] |
Reimplemented from QtAbstractPropertyManager.
| QVariant QtVariantPropertyManager::value | ( | const QtProperty * | property | ) | const [virtual] |
Returns the given property's value.
If the given property is not managed by this manager, this function returns an invalid variant.
| void QtVariantPropertyManager::valueChanged | ( | QtProperty * | property, |
| const QVariant & | value | ||
| ) | [signal] |
This signal is emitted whenever a property created by this manager changes its value, passing a pointer to the property and the new value as parameters.
| QIcon QtVariantPropertyManager::valueIcon | ( | const QtProperty * | property | ) | const [protected, virtual] |
Reimplemented from QtAbstractPropertyManager.
| QString QtVariantPropertyManager::valueText | ( | const QtProperty * | property | ) | const [protected, virtual] |
Reimplemented from QtAbstractPropertyManager.
| int QtVariantPropertyManager::valueType | ( | const QtProperty * | property | ) | const |
Returns the given property's value type.
| int QtVariantPropertyManager::valueType | ( | int | propertyType | ) | const [virtual] |
This is an overloaded member function, provided for convenience. It differs from the above function only in what argument(s) it accepts. Returns the value type associated with the given propertyType.
| QtVariantProperty * QtVariantPropertyManager::variantProperty | ( | const QtProperty * | property | ) | const |
Returns the given property converted into a QtVariantProperty.
If the property was not created by this variant manager, the function returns 0.
1.7.6.1
