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nyalldawsonnyalldawson
committedJul 18, 2017
[layout] Add measurement unit handling to QgsLayout
Allows layouts to convert from various units to their own native units Also added a QgsLayoutContext to QgsLayout.
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ltr-3_40final-3_0_0
1 parent cd380f6 commit ab79b15

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‎python/core/layout/qgslayout.sip

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@@ -26,6 +26,84 @@ class QgsLayout : QGraphicsScene
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QgsLayout();
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void setUnits( QgsUnitTypes::LayoutUnit units );
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%Docstring
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Sets the native measurement ``units`` for the layout. These also form the default unit
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for measurements for the layout.
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.. seealso:: units()
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.. seealso:: convertToLayoutUnits()
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%End
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QgsUnitTypes::LayoutUnit units() const;
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%Docstring
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Returns the native units for the layout.
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.. seealso:: setUnits()
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.. seealso:: convertToLayoutUnits()
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:rtype: QgsUnitTypes.LayoutUnit
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%End
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double convertToLayoutUnits( const QgsLayoutMeasurement &measurement ) const;
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%Docstring
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Converts a measurement into the layout's native units.
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:return: length of measurement in layout units
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.. seealso:: convertFromLayoutUnits()
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.. seealso:: units()
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:rtype: float
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%End
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QSizeF convertToLayoutUnits( const QgsLayoutSize &size ) const;
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%Docstring
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Converts a size into the layout's native units.
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:return: size of measurement in layout units
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.. seealso:: convertFromLayoutUnits()
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.. seealso:: units()
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:rtype: QSizeF
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%End
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QPointF convertToLayoutUnits( const QgsLayoutPoint &point ) const;
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%Docstring
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Converts a ``point`` into the layout's native units.
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:return: point in layout units
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.. seealso:: convertFromLayoutUnits()
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.. seealso:: units()
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:rtype: QPointF
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%End
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QgsLayoutMeasurement convertFromLayoutUnits( const double length, const QgsUnitTypes::LayoutUnit unit ) const;
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%Docstring
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Converts a ``length`` measurement from the layout's native units to a specified target ``unit``.
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:return: length of measurement in specified units
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.. seealso:: convertToLayoutUnits()
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.. seealso:: units()
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:rtype: QgsLayoutMeasurement
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%End
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QgsLayoutSize convertFromLayoutUnits( const QSizeF &size, const QgsUnitTypes::LayoutUnit unit ) const;
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%Docstring
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Converts a ``size`` from the layout's native units to a specified target ``unit``.
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:return: size of measurement in specified units
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.. seealso:: convertToLayoutUnits()
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.. seealso:: units()
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:rtype: QgsLayoutSize
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%End
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QgsLayoutPoint convertFromLayoutUnits( const QPointF &point, const QgsUnitTypes::LayoutUnit unit ) const;
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%Docstring
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Converts a ``point`` from the layout's native units to a specified target ``unit``.
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:return: point in specified units
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.. seealso:: convertToLayoutUnits()
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.. seealso:: units()
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:rtype: QgsLayoutPoint
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%End
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QgsLayoutContext &context();
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%Docstring
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Returns a reference to the layout's context, which stores information relating to the
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current context and rendering settings for the layout.
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:rtype: QgsLayoutContext
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%End
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};
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‎src/core/layout/qgslayout.cpp

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@@ -21,3 +21,33 @@ QgsLayout::QgsLayout()
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{
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}
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double QgsLayout::convertToLayoutUnits( const QgsLayoutMeasurement &measurement ) const
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{
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return mContext.measurementConverter().convert( measurement, mUnits ).length();
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}
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QSizeF QgsLayout::convertToLayoutUnits( const QgsLayoutSize &size ) const
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{
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return mContext.measurementConverter().convert( size, mUnits ).toQSizeF();
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}
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QPointF QgsLayout::convertToLayoutUnits( const QgsLayoutPoint &point ) const
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{
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return mContext.measurementConverter().convert( point, mUnits ).toQPointF();
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}
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QgsLayoutMeasurement QgsLayout::convertFromLayoutUnits( const double length, const QgsUnitTypes::LayoutUnit unit ) const
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{
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return mContext.measurementConverter().convert( QgsLayoutMeasurement( length, mUnits ), unit );
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}
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QgsLayoutSize QgsLayout::convertFromLayoutUnits( const QSizeF &size, const QgsUnitTypes::LayoutUnit unit ) const
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{
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return mContext.measurementConverter().convert( QgsLayoutSize( size.width(), size.height(), mUnits ), unit );
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}
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QgsLayoutPoint QgsLayout::convertFromLayoutUnits( const QPointF &point, const QgsUnitTypes::LayoutUnit unit ) const
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{
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return mContext.measurementConverter().convert( QgsLayoutPoint( point.x(), point.y(), mUnits ), unit );
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}

‎src/core/layout/qgslayout.h

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@@ -18,6 +18,7 @@
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#include "qgis_core.h"
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#include <QGraphicsScene>
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#include "qgslayoutcontext.h"
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/**
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* \ingroup core
@@ -39,6 +40,86 @@ class CORE_EXPORT QgsLayout : public QGraphicsScene
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QgsLayout();
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/**
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* Sets the native measurement \a units for the layout. These also form the default unit
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* for measurements for the layout.
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* \see units()
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* \see convertToLayoutUnits()
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*/
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void setUnits( QgsUnitTypes::LayoutUnit units ) { mUnits = units; }
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/**
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* Returns the native units for the layout.
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* \see setUnits()
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* \see convertToLayoutUnits()
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*/
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QgsUnitTypes::LayoutUnit units() const { return mUnits; }
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/**
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* Converts a measurement into the layout's native units.
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* \returns length of measurement in layout units
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* \see convertFromLayoutUnits()
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* \see units()
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*/
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double convertToLayoutUnits( const QgsLayoutMeasurement &measurement ) const;
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/**
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* Converts a size into the layout's native units.
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* \returns size of measurement in layout units
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* \see convertFromLayoutUnits()
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* \see units()
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*/
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QSizeF convertToLayoutUnits( const QgsLayoutSize &size ) const;
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/**
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* Converts a \a point into the layout's native units.
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* \returns point in layout units
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* \see convertFromLayoutUnits()
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* \see units()
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*/
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QPointF convertToLayoutUnits( const QgsLayoutPoint &point ) const;
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/**
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* Converts a \a length measurement from the layout's native units to a specified target \a unit.
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* \returns length of measurement in specified units
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* \see convertToLayoutUnits()
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* \see units()
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*/
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QgsLayoutMeasurement convertFromLayoutUnits( const double length, const QgsUnitTypes::LayoutUnit unit ) const;
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/**
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* Converts a \a size from the layout's native units to a specified target \a unit.
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* \returns size of measurement in specified units
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* \see convertToLayoutUnits()
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* \see units()
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*/
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QgsLayoutSize convertFromLayoutUnits( const QSizeF &size, const QgsUnitTypes::LayoutUnit unit ) const;
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/**
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* Converts a \a point from the layout's native units to a specified target \a unit.
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* \returns point in specified units
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* \see convertToLayoutUnits()
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* \see units()
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*/
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QgsLayoutPoint convertFromLayoutUnits( const QPointF &point, const QgsUnitTypes::LayoutUnit unit ) const;
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/**
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* Returns a reference to the layout's context, which stores information relating to the
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* current context and rendering settings for the layout.
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*/
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QgsLayoutContext &context() { return mContext; }
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/**
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* Returns a reference to the layout's context, which stores information relating to the
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* current context and rendering settings for the layout.
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*/
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SIP_SKIP const QgsLayoutContext &context() const { return mContext; }
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private:
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QgsUnitTypes::LayoutUnit mUnits = QgsUnitTypes::LayoutMillimeters;
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QgsLayoutContext mContext;
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};
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#endif //QGSLAYOUT_H

‎tests/src/core/testqgslayout.cpp

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@@ -28,6 +28,7 @@ class TestQgsLayout: public QObject
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void init();// will be called before each testfunction is executed.
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void cleanup();// will be called after every testfunction.
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void creation(); //test creation of QgsLayout
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void units();
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private:
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QString mReport;
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delete layout;
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}
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void TestQgsLayout::units()
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{
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QgsLayout layout;
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layout.setUnits( QgsUnitTypes::LayoutCentimeters );
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QCOMPARE( layout.units(), QgsUnitTypes::LayoutCentimeters );
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QCOMPARE( layout.convertToLayoutUnits( QgsLayoutMeasurement( 10.0, QgsUnitTypes::LayoutMillimeters ) ), 1.0 );
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QCOMPARE( layout.convertToLayoutUnits( QgsLayoutSize( 10.0, 20.0, QgsUnitTypes::LayoutMillimeters ) ), QSizeF( 1.0, 2.0 ) );
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QCOMPARE( layout.convertToLayoutUnits( QgsLayoutPoint( 10.0, 20.0, QgsUnitTypes::LayoutMillimeters ) ), QPointF( 1.0, 2.0 ) );
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QCOMPARE( layout.convertFromLayoutUnits( 1.0, QgsUnitTypes::LayoutMillimeters ), QgsLayoutMeasurement( 10.0, QgsUnitTypes::LayoutMillimeters ) );
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QCOMPARE( layout.convertFromLayoutUnits( QSizeF( 1.0, 2.0 ), QgsUnitTypes::LayoutMillimeters ), QgsLayoutSize( 10.0, 20.0, QgsUnitTypes::LayoutMillimeters ) );
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QCOMPARE( layout.convertFromLayoutUnits( QPointF( 1.0, 2.0 ), QgsUnitTypes::LayoutMillimeters ), QgsLayoutPoint( 10.0, 20.0, QgsUnitTypes::LayoutMillimeters ) );
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//check with dpi conversion
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layout.setUnits( QgsUnitTypes::LayoutInches );
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layout.context().setDpi( 96.0 );
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QCOMPARE( layout.context().dpi(), 96.0 );
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QCOMPARE( layout.convertToLayoutUnits( QgsLayoutMeasurement( 96, QgsUnitTypes::LayoutPixels ) ), 1.0 );
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QCOMPARE( layout.convertToLayoutUnits( QgsLayoutSize( 96, 96, QgsUnitTypes::LayoutPixels ) ), QSizeF( 1.0, 1.0 ) );
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QCOMPARE( layout.convertToLayoutUnits( QgsLayoutPoint( 96, 96, QgsUnitTypes::LayoutPixels ) ), QPointF( 1.0, 1.0 ) );
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QgsLayoutMeasurement result = layout.convertFromLayoutUnits( 1.0, QgsUnitTypes::LayoutPixels );
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QCOMPARE( result.units(), QgsUnitTypes::LayoutPixels );
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QCOMPARE( result.length(), 96.0 );
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QgsLayoutSize sizeResult = layout.convertFromLayoutUnits( QSizeF( 1.0, 1.0 ), QgsUnitTypes::LayoutPixels );
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QCOMPARE( sizeResult.units(), QgsUnitTypes::LayoutPixels );
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QCOMPARE( sizeResult.width(), 96.0 );
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QCOMPARE( sizeResult.height(), 96.0 );
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QgsLayoutPoint pointResult = layout.convertFromLayoutUnits( QPointF( 1.0, 1.0 ), QgsUnitTypes::LayoutPixels );
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QCOMPARE( pointResult.units(), QgsUnitTypes::LayoutPixels );
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QCOMPARE( pointResult.x(), 96.0 );
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QCOMPARE( pointResult.y(), 96.0 );
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layout.setUnits( QgsUnitTypes::LayoutPixels );
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QCOMPARE( layout.convertToLayoutUnits( QgsLayoutMeasurement( 1, QgsUnitTypes::LayoutInches ) ), 96.0 );
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QCOMPARE( layout.convertToLayoutUnits( QgsLayoutSize( 1, 2, QgsUnitTypes::LayoutInches ) ), QSizeF( 96.0, 192.0 ) );
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QCOMPARE( layout.convertToLayoutUnits( QgsLayoutPoint( 1, 2, QgsUnitTypes::LayoutInches ) ), QPointF( 96.0, 192.0 ) );
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result = layout.convertFromLayoutUnits( 96.0, QgsUnitTypes::LayoutInches );
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QCOMPARE( result.units(), QgsUnitTypes::LayoutInches );
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QCOMPARE( result.length(), 1.0 );
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sizeResult = layout.convertFromLayoutUnits( QSizeF( 96.0, 192.0 ), QgsUnitTypes::LayoutInches );
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QCOMPARE( sizeResult.units(), QgsUnitTypes::LayoutInches );
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QCOMPARE( sizeResult.width(), 1.0 );
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QCOMPARE( sizeResult.height(), 2.0 );
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pointResult = layout.convertFromLayoutUnits( QPointF( 96.0, 192.0 ), QgsUnitTypes::LayoutInches );
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QCOMPARE( pointResult.units(), QgsUnitTypes::LayoutInches );
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QCOMPARE( pointResult.x(), 1.0 );
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QCOMPARE( pointResult.y(), 2.0 );
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}
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QGSTEST_MAIN( TestQgsLayout )
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#include "testqgslayout.moc"

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