mirror of
https://github.com/qgis/QGIS.git
synced 2025-11-04 00:04:25 -05:00
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
/************************************************************************
|
|
* This file has been generated automatically from *
|
|
* *
|
|
* src/core/qgsvariantutils.h *
|
|
* *
|
|
* Do not edit manually ! Edit header and run scripts/sipify.pl again *
|
|
************************************************************************/
|
|
|
|
|
|
|
|
class QgsVariantUtils
|
|
{
|
|
%Docstring(signature="appended")
|
|
|
|
Contains utility functions for working with QVariants and QVariant types.
|
|
|
|
.. versionadded:: 3.24
|
|
%End
|
|
|
|
%TypeHeaderCode
|
|
#include "qgsvariantutils.h"
|
|
%End
|
|
public:
|
|
|
|
static QString typeToDisplayString( QVariant::Type type, QVariant::Type subType = QVariant::Type::Invalid );
|
|
%Docstring
|
|
Returns a user-friendly translated string representing a QVariant ``type``.
|
|
|
|
The optional ``subType`` can be used to specify the type of variant list or map values.
|
|
%End
|
|
|
|
static bool isNull( const QVariant &variant );
|
|
%Docstring
|
|
Returns ``True`` if the specified ``variant`` should be considered a NULL value.
|
|
|
|
This method is more rigorous vs QVariant.isNull(), which will return
|
|
``False`` on newer Qt versions for tests like `QVariant( QDateTime() ).isNull()`.
|
|
|
|
.. versionadded:: 3.28
|
|
%End
|
|
|
|
|
|
|
|
};
|
|
|
|
/************************************************************************
|
|
* This file has been generated automatically from *
|
|
* *
|
|
* src/core/qgsvariantutils.h *
|
|
* *
|
|
* Do not edit manually ! Edit header and run scripts/sipify.pl again *
|
|
************************************************************************/
|