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3dc17faca6
While QVariant::Type can be directly static_cast to QMetaType::Type, the reverse is not true and many QMetaType::Type values don't have exact counterparts in QVariant::Type. So we use the logic: - If no conversion is possible, QVariant::UserType will be returned. Note that we don't use QVariant::Invalid, as the value DOES have a type, it's just one which needs special handling (just like user types do) - Some conversions are lossy, in that the QVariant::Type cannot represent the full range of values possible in QMetaType::Type. In these cases the returned type will be an "expanded" type capable of storing the full range of values possible in the original type. Eg we map QMetaType::Type::Float to QVariant::Type::Double QgsVariantUtils::variantTypeToMetaType is included for clarity/ completeness/future proof-ness, even though it currently can be handled with just a simple static cast.
53 lines
1.8 KiB
Plaintext
53 lines
1.8 KiB
Plaintext
/************************************************************************
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* This file has been generated automatically from *
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* *
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* src/core/qgsvariantutils.h *
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* *
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* Do not edit manually ! Edit header and run scripts/sipify.pl again *
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************************************************************************/
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class QgsVariantUtils
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{
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%Docstring(signature="appended")
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Contains utility functions for working with QVariants and QVariant types.
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.. versionadded:: 3.24
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%End
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%TypeHeaderCode
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#include "qgsvariantutils.h"
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%End
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public:
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static QString typeToDisplayString( QVariant::Type type, QVariant::Type subType = QVariant::Type::Invalid );
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%Docstring
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Returns a user-friendly translated string representing a QVariant ``type``.
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The optional ``subType`` can be used to specify the type of variant list or map values.
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%End
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static bool isNull( const QVariant &variant );
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%Docstring
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Returns ``True`` if the specified ``variant`` should be considered a NULL value.
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This method is more rigorous vs QVariant.isNull(), which will return
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``False`` on newer Qt versions for tests like `QVariant( QDateTime() ).isNull()`.
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.. versionadded:: 3.28
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%End
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};
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/************************************************************************
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* This file has been generated automatically from *
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* *
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* src/core/qgsvariantutils.h *
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* *
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* Do not edit manually ! Edit header and run scripts/sipify.pl again *
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************************************************************************/
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