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Move unit handling helpers out of QGis and QgsSymbolLayerUtils
into a new QgsUnitTypes helper class. Add unit tests. TODO QGIS 3.0: Move QGis::UnitType and QgsSymbolV2::OutputUnit to QgsUnitTypes
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,80 @@ | ||
| /** \ingroup core | ||
| * \class QgsUnitTypes | ||
| * \brief Helper functions for various unit types. | ||
| * \note Added in version 2.14 | ||
| */ | ||
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| class QgsUnitTypes | ||
| { | ||
| %TypeHeaderCode | ||
| #include <qgsunittypes.h> | ||
| %End | ||
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| public: | ||
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| /** Types of distance units | ||
| */ | ||
| enum DistanceUnitType | ||
| { | ||
| Standard, /*!< unit is a standard measurement unit */ | ||
| Geographic, /*!< unit is a geographic (eg degree based) unit */ | ||
| UnknownType, /*!< unknown unit type */ | ||
| }; | ||
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| /** Returns the type for a distance unit. | ||
| */ | ||
| static DistanceUnitType unitType( QGis::UnitType unit ); | ||
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| /** Encodes a distance unit to a string. | ||
| * @param unit unit to encode | ||
| * @returns encoded string | ||
| * @see decodeDistanceUnit() | ||
| */ | ||
| static QString encodeUnit( QGis::UnitType unit ); | ||
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| /** Decodes a distance unit from a string. | ||
| * @param string string to decode | ||
| * @param ok optional boolean, will be set to true if string was converted successfully | ||
| * @returns decoded units | ||
| * @see encodeUnit() | ||
| */ | ||
| static QGis::UnitType decodeDistanceUnit( const QString& string, bool *ok = 0 ); | ||
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| /** Returns a translated string representing a distance unit. | ||
| * @param unit unit to convert to string | ||
| * @see fromString() | ||
| */ | ||
| static QString toString( QGis::UnitType unit ); | ||
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| /** Converts a translated string to a distance unit. | ||
| * @param string string representing a distance unit | ||
| * @param ok optional boolean, will be set to true if string was converted successfully | ||
| * @see toString() | ||
| */ | ||
| static QGis::UnitType stringToDistanceUnit( const QString& string, bool *ok = 0 ); | ||
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| /** Returns the conversion factor between the specified distance units. | ||
| * @param fromUnit distance unit to convert from | ||
| * @param toUnit distance unit to convert to | ||
| * @returns multiplication factor to convert between units | ||
| */ | ||
| static double fromUnitToUnitFactor( QGis::UnitType fromUnit, QGis::UnitType toUnit ); | ||
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| /** Encodes a symbol unit to a string. | ||
| * @param unit unit to encode | ||
| * @returns encoded string | ||
| * @see decodeSymbolUnit() | ||
| */ | ||
| static QString encodeUnit( QgsSymbolV2::OutputUnit unit ); | ||
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| /** Decodes a symbol unit from a string. | ||
| * @param string string to decode | ||
| * @param ok optional boolean, will be set to true if string was converted successfully | ||
| * @returns decoded units | ||
| * @see encodeUnit() | ||
| */ | ||
| static QgsSymbolV2::OutputUnit decodeSymbolUnit( const QString& string, bool *ok = 0 ); | ||
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| }; | ||
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